SAINT-GOBAIN VISION-LITE Instruction Manual

VISION-LITE® / VISION-LITE II® PROCESSING GUIDELINES
MAY 2022
1
PROCESSING GUIDELINES
VISION-LITE® / VISION-LITE II®

VISION-LITE® / VISION-LITE II® PROCESSING GUIDELINES
MAY 2022
2
DOCUMENT CODE DATE
SGG-QD-C-GUI-0013-B 05/2022

VISION-LITE® / VISION-LITE II® PROCESSING GUIDELINES
MAY 2022
3
TABLE OF CONTENTS
1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1. Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2. Thickness, dimensions and tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.1. Thickness and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2.2. Thickness recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3. CE-Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4. Quality criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4.1. Defect types: definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4.2. General observation conditions and acceptance criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5. Position of the coating and identification of the coated face . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.5.1. Position of the coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1.5.2. Identification of the coated face . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2. Transport, acceptance, storage and handling . . . . . . . . . . . . . . . . . . . . . . . 9
2.1. Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2. Receipt of the delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.3. Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.2. Shelf life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4. Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3. Processing of VISION-LITE® RANGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.1. Handling on the production lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2. Glass cutting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3. Edge deletion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4. Edge working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4.1. Manual Edge Working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.2. Automatic Edge Working . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.3. Drilling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.5. Washing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
3.6. Tempering / Heat-Strengthening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6.2. Prerequisites for tempering / heat-strengthening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.6.3. Toughening instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7. Heat-Soak testin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.8. Bending . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.9. Enamelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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3.10. Handling of heat-treated glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.11. Lamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.12. Manufacture of Insulating Glass Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.13.Processing quality checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4. Environment / waste glass / health issues . . . . . . . . . . . . . . . . . . . . . . . . .19
5. Glazing instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
6. Protection, cleaning and maintenance of the end products . . . . . . . . . 20
6.1. Protection of the glazing during building works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2. Removal of labels and markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3. Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7. Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

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1. General
VISION-LITE® is a coated glass with very low reflectance (1%). According to the product reference, it is
available in annealed monolithic with coating on one or two sides or laminated with coatings on both
sides (see below). VISION-LITE® is produced on DIAMANT® base glass for architectural applications.
The two exterior sides of the glass have a transparent coating of oxides or a coating of metallic nitrides
which, by reducing the reflectance of the glass surface, enhance the glass transparency and visibility of
objects seen through it.
As compared to the standard glass, VISION-LITE® has:
• Higher transparency
• Extremely low light reflectance
• High light transmittance
• Very high colour contrast
VISION-LITE® II is the to-be-tempered version, it can be toughened, heat-strengthened or curved.
The VISION-LITE® range includes the following types of products:
• SEMI VISION-LITE® monolithic glass - with coating on one side of the glass only, intended for
lamination.
• STADIP VISION-LITE® laminated glass - with two SEMI VISION-LITE® sheets assembled by means of
one or several PVB layers. The sheets are assembled so that the coating is on the exterior, therefore
the laminate has coatings on both sides.
• VISION-LITE® II monolithic glass - with coating on both sides of the glass, meant to be tempered
• SEMI VISION-LITE® II monolithic glass - with coating on one side of the glass only, intended for
tempering then lamination.
VISION-LITE® & VISION-LITE® II can be used in single or double glazing unit.
VISION-LITE® is mainly used in retail shops and museums as display case glazing, and in exteriors as
shop windows or balustrades. VISION-LITE® can also be used for other specific external applications like
lobby / ground floor glazing and roof-top restaurants. VISION-LITE® is however not recommended for
façade projects, including multi-storey shop windows.
VISION-LITE® II is recommended for specific applications requiring tempered glass, it can be used as
external glazing on limited surface. Building applications of VISION-LITE II® must be assessed depending
on the project. VISION-LITE® II is not recommended for high rise front façade (curtain wall). Contact
your sales representative for more information.
VISION-LITE® & VISION-LITE® II cannot be mixed on the same glazing surface.
VISION-LITE® range meets the requirements of Class A products as defined in the European standards
EN1096-1 and EN1096-2. The eciency of the anti-reflective eect will be maximum in the simple glazing.
For complete performance data, please refer to the Glass Guide, our commercial documentations and
our website www.saint-gobain-glass.com.
To improve customer satisfaction, we constantly improve the quality of our coatings. This could lead to
improvement in the processability of our coating, so please make sure you have an up-todate version
of these guidelines.
1.1. PRODUCT DESCRIPTION
VISION-LITE® range products are usually available in standard thicknesses and sizes. For more details, please
refer to the relevant product documentation from Saint-Gobain Glass or contact your local sales service.
1.2.1. Thickness and dimensions
1.2. THICKNESS, DIMENSIONS AND TOLERANCES

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Without prior agreement between both parties, applicable defect acceptance criteria under standard
observation conditions (Figures 1.a) and 1.b)) are those described in EN 1096-1:
“Coated glass may be examined in stock size plates or in cut sizes ready for installation. The examination
may be undertaken in the factory or on site when glazed.
The pane of coated glass being examined is viewed from a minimum distance of 3 m. The actual distance
will be dependent on the defect being considered and on which illumination source is being used. The
examination of the coated glass in reflection is performed by the observer looking at the side which will
be the outside of the glazing. The examination of the coated glass in transmission is performed by the
observer looking at the side which will be the inside of the glazing. During the examination the angle
between the normal to the surface of the coated glass and the light beam proceeding to the eyes of the
observer after reflection or transmission by the coated glass shall not exceed 30°.”
1.4.2. General observation conditions and acceptance criteria
Coated glass defect types are listed and defined in EN 1096-1 standard. The following definitions
areextracted from this norm:
• Uniformity defect: slight visible variation in colour, in reflection or in transmission within a coated
glass pane or from pane to pane;
• Stain: defect in the coating larger than punctual defect, often irregularly shaped, partially of mottled
structure;
• Punctual defects: punctual disturbance of the visual transparency looking through the glass and
of the visual reflectance looking at the glass. Spots, pinholes and scratches are types of punctual
defects;
• Spot: defect that commonly looks dark against the surrounding coating, when viewed in
transmission;
• Pinhole: punctual void in the coating with partial or total absence of the coating. Normally
contrasts clear relative to the coating, when viewed in transmission.
• Scratches: variety of linear score marks, whose visibility depend on their length, depth, width,
position and arrangements;
• Cluster: accumulation of very small defects giving the impression of stain.
1.4.1. Defect types: definitions
1.3. CE-MARKING
1.4. QUALITY CRITERIA
VISION-LITE® range complies with EN 1096-4 harmonised European standard for coated glass.
The Declaration of Performances (DoP) of the products are available on the CE-marking section of
Saint-Gobain Glass web sites and at www.saint-gobain-glass.com/ce.
• Calculations and recommendations are the same as those for conventional glass sheets (annealed,
tempered, laminated …) assembled in double glazing.
• Relevant national and local regulations should be complied with.
1.2.2. Thickness recommendations

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REFLECTION TRANSMISSION
Key:
1. Illumination source
2. Observer position
3. Coated glass sample
• Monolithic glass / laminated glass
VISION-LITE® is a class A coated glass product (as per EN 1096-1 definition). The antireflective coating
must always be positioned on face 1 of the glazing and for maximizing antireflective eect it must be
also present on face 2 of the pane.
This coated glass can be laminated taking care to always place the coating outside of the laminate. Use
of the coating against the PVB is not allowed.
Possible configurations of use:
Important: As any coated glass, VISION-LITE® glazing must come from one production campaign only
on the same building project.
1.5.1. Position of the coating
1.5. POSITION OF THE COATING AND IDENTIFICATION OF THE COATED FACE
(Semi-) VISION-LITE (Semi-) VISION-LITE II
Figure 1: Schematics of examination procedures for coated glass (as per EN 1096-1)

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• Insulating glass unit (IGU)
VISION-LITE® range can be assembled in DGU. The coated glasses must always be positioned on face
1 of the glazing and to maximise anti-reflective eect be also present on other faces of the IGU (for
instance face 2-3-4 for double glazing unit).
VISION-LITE® & VISION-LITE®II cannot be mixed on the same DGU.
Possible configurations:
(Semi-) VISION-LITE
PVB interlayer Low-E coatnig (*)
Temperable
Low-E coating (*)
(Semi-) VISION-LITE II
For enhanced thermal insulation, VISION-LITE® & VISION-LITE® II can be combined with low-e coatings,
to be positioned on the inner sheet of the inner panel.
For (Semi) VISION-LITE® (annealed version), the inner sheet of the inner laminated panel can be replaced
with a low-emissivity coated glass like PLANITHERM® XN or ECLAZ® for instance.
The association of Semi VISION-LITE® with other low emissivity coatings must be assessed case by
case, please contact your sales representative.
For VISION-LITE® II dual coating (tempered version), the inner side of the inner panel can be coated
with PLANITHERM® UN II.
Important: Combination with low-e coating can induce a very light color change in transmission and
reflection of the glazing, for specific applications it is strongly recommended that a sample is viewed in
the intended location.
• Mixing annealed / heat-treated coated glass
Annealed and heat-treated versions of a product are not mixable on the same surface.
Saint-Gobain Glass cannot be held responsible of colour mismatch due to the mixing of annealed and
tempered glazing on a same façade.
For any other combination, contact your local Saint-Gobain commercial representative.

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Anti-reflective coating detector can be used for correct detection of the coating position. Be sure to
have a calibrated detector. One example is showed on picture below. Contact either your local “Technical
Support Manager” (TSM) or local sales service to obtain such a detector.
When using a label in order to identify the VISION-LITE® range product during processing and installation,
it is mandatory to use electrostatic labels which do not leave traces upon sticking. No metallic tool
must be used to remove labels, as the risk to damage the coating is very high with such tool; it is
recommended to use soft tool like Teflon tool for removing traces of labels.
1.5.2. Identification of the coated face
2. Transport, acceptance, storage and handling
• Coated glass sheets are usually transported in 2.8 tonnes packs (jumbo or split sizes).
• Glass sheets must be transported vertically;
• The individual sheets are packed with the coated side towards the inside of the frame unless
otherwise requested by the customer;
• The glass panes never come into direct contact with each other: the glass sheets are always
separated by neutral polymeric powder;
• Each coated glass pack contains at least one protective sheet (clear glass) to protect the coating
from contact with the stillage dossier or cardboard separators. The nature of this protective sheet
will depend on the glass ordered (laminated or monolithic). In case of
• VISION-LITE® II, two protective sheets (clear glass 4 mm) are used on each side of the pack;
• The pack and its contents must be protected from water.
• If the glass is wrapped and sealed, the seal should remain closed until the product is used in the factory;
• During transport, violent and repeated shocks should be avoided;
• When handling with a hoisting apparatus, measures must be taken not to damage the pack.
2.1. TRANSPORT

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Every pack must be opened with care in order not to damage the glass sheets or the coating(s)
(contacts, scratches, etc.). Handling instructions on the packing must be respected, particularly the
instructions for opening.
• Before processing, glass sheets should be checked in accordance with the specifications defined above.
Any possible defect in the coating must immediately be reported to the supplier, accompanied by:
• The date of delivery;
• The data mentioned on the identification label;
• All deliveries are identified with a label providing the following data:
2.2. RECEIPT OF THE DELIVERY
No claim can be accepted for damages caused during and after processing due to a lack of adherence
to these guidelines. Therefore, glass processor should ensure that the process is adapted for coated
glass and that the quality control is relevant to detect any quality problem as soon as possible. In case of
claim, samples will be required and a visit from a Saint-Gobain Glass representative may be requested.
NET WEIGHT
DIMENSIONS
BAR CODE
COVER SHEET
TRACEABILITY
NUMBER OF SHEETS
DATE AND TIME OF
PRODUCTION
(COATING)
PRODUCT NAME
BATCH NUMBER
CE MARKING
(COATING)
GLASS THICKNESS

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2.3. STORAGE
2.4. HANDLING
All glass products may degrade (become stained or corroded) when stored in humid conditions. The
iridescence may take the appearance of a “rainbow” or milky white haze on the surface of the glass, or
corrosion pitting on the coated side.
VISION-LITE® range glass sheets must be stored, as float glass, vertically (at 3 to 7 degrees) under the
following conditions:
• In a dry, well ventilated warehouse, to prevent any condensation on the surface;
• Away from glass dust;
• Protected from rain and running water (e.g. any roof leakage must be rectified);
• Never outside or in the open air (even when packed);
• Protected from wide changes in temperature and humidity levels (coated glass products should be
stored far from opening doors).
• In case the coated glass is delivered packed (aluminium, PE):
• Before breaking the seal, to avoid condensation, one should ensure that the temperature of the
pack has reached the temperature of the environment of the warehouse.
If the above (§ 2.3.1) storage conditions are respected, VISION-LITE® range is guaranteed for 2 years
from the date of reception at the customer’s premises. In case the date of reception is lost by the
customer, the date of the delivery note will serve as evidence.
• VISION-LITE® coated glass sheets must be handled with dry, clean and appropriate safety gloves.
• In case handling operations with vacuum cups on the coated side cannot be avoided, make sure
that the vacuum cups are perfectly clean. Not all solutions are suitable for cleaning vacuum cups,
see manufacturer documentation for details. A sheet of interlayer paper (acidfree, thin, soft and
air-permeable) or suitable suction-cups caps can also be placed on the coated side, between the
vacuum cups and the surface, but care must be exercised as this may reduce the vacuum level
(especially in the case of thick and heavy panes).
• Each coated glass pane must be released from the next pane before being lifted from the pack. Any
relative movement of the coating with the next glass pane must be avoided.
• Automatic unstacking of glass sheets or removal using a glass clamp is possible, but the gripping
area should be kept to a minimum and condemned from the cutting pattern;
• In case of doubt, the position of the coating must be checked (see § 1.5.2). Do not place the coating
in contact with a rough surface or hard objects.
• Always avoid fingerprints and dirt traces which would require an additional cleaning of the coating.
If necessary, the coating may be gently wiped with a soft dry cloth and a suitable solution (e.g.
isopropyl alcohol (IPA)).
Scratches on the coating which occur during handling and processing, if the instructions of this guideline
are not respected, are visible when looked at from an incident angle (in reflectance). They are much
more visible than on the PLANICLEAR® clear glass. Wearing gloves is mandatory and all equipment
should be well maintained (without frictions on the coating layer).
2.3.1. General
2.3.2. Shelf life

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3. Processing of VISION-LITE® RANGE
All the recommendations outlined in § 2.4 remain valid.
• Ensure, as much as possible, that the coating does not come in contact with guide rollers on the line;
the coating must be turned towards the operator when facing the line. If it has to go through, make
sure the conveying belts are perfectly clean and free from any abrasive material / particle;
• Hoisting and handling instruments, tools and vacuum cups must be kept perfectly clean (or covered
with adapted caps) so as not to leave traces on the coating;
• Wear dry and clean safety gloves when lifting the glass sheet manually. Limit area of contact as
much as possible;
• The coating must be protected from any contact with greasy substances;
In general, and to be considered for all steps of processing, it is important to check whether the
installation is equipped with glass sensors functioning by detecting the glass reflectance to signal the
glass presence.
In fact, the very low reflectance of the VISION-LITE® range glass may not be detected by the sensor
and therefore it may not send the information to the equipment. This could generate inappropriate
situation and by anticipation sensor adjustment may be required and should be checked.
Here are examples of online sensors that works to detect correctly Vision-Lite:
• OMRON E3X-DA41-N
• PANASONIC SUNX cx-421-T
3.1. HANDLING ON THE PRODUCTION LINES
VISION-LITE® range is cut in the same way as any other ordinary coated glass. However, the following
recommendations have to be respected:
• Any irregularity or damage of the edges must be avoided since it is likely to increase the risk of
breakage during the toughening process;
• Use only light vaporising cutting oil (for instance Acecut 5503 or 5250) adapted to coated glass;
• Do not dilute or mix the cutting oil;
• Avoid all excess of cutting oil: Max width: 1 cm;
• As coating could face the table, cutting table must be thoroughly cleaned from all particles of glass
or other material; cleaning must be maintained throughout the cutting process. For the glass with
coating on one side only (intended for lamination), the coating must not come into contact with the
table, but be on the upper side of the glass.
• If the installation is equipped with rollers for conveying the glass sheets, the rollers must be regularly
inspected to check whether they move. A blocked or malfunctioning roller may scratch the anti-
reflective coating.
• For cutting operation, avoid using natural latex coated gloves as latex tends to dissolve in cutting oil.
This leaves a greasy residue on the coating which may be dicult to wash in the industrial washing
machines. Grade 5 leather or PU palmed gloves as well as NBR nitrile dipped gloves should be
preferred;
• Cutting templates can be used but great care must be taken not to scratch the coating. Soft
protection (soft tissue, felt or cork pad) should be placed underneath the template;
• Fine glass splinters on the coated surface should not be wiped o by hand, but blown o by dry
and oil-free air;
• When stacking cut sizes prior to further processing, separate the panes by either:
• New cork pads (recommended);
3.2. GLASS CUTTING

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• Paper interlayer (chlorine free);
• Foam pads;
• Corrugated cardboard strips.
This is especially important with glass of dierent dimensions. Do not put additional separating powder.
The use of so-called “harp carts” to store the cut sizes is not recommended as the contact of the wires
on the coating may damage the latter when the cut sizes are pulled from or pushed in between the wires
• In case such carts are however used: it must be ensured that the metallic wires are well protected
with plastic sleeves on their whole length. Those protections must be totally free of glass shards;
• The cut sizes must be inserted in such a way that the coating is never rubbed onto the wires;
• Such carts must not be used in case the coating is to be tempered.
For VISION-LITE® II only (dual coating ‘to be tempered’ version):
• In order to ensure the homogeneity after tempering, it is necessary to remove 20mm all around the
plate at the cutting step. The usable surface is therefore 40mm smaller than the full plate in both
directions: for instance, with 3210×6000 mm² PLF, the usable surface is 3170×5960 mm².
VISION-LITE® range does not need to be edge deleted whatever the configuration of use. It could be
used with polysulphide, polyurethane or silicone IGU sealants in respect of plant control plan.
It is good practice to edge work the glass directly after cutting. Provided the glass is stored under above
defined conditions, the glass must be edge worked within 5 days from cutting.
Edge-working machine must be thoroughly cleaned before working with VISION-LITE® range, especially
the parts coming into contact with the glass. The conveyor rollers must not slip on the glass (must not
be blocked). Water in the self-contained circuit of the edging machines must be regularly changed at
short intervals, in order to avoid charging the water with residual from edging.
• Wet edge-working: it is essential to keep the glass fully wet during the whole grinding process and to
wash the glass directly afterwards so that the grinding water is not able to dry on the coated surface.
• Dry edge-working: such processing is generally not recommended as small glass dust particles may
be sprayed on the dry coated surface. In case of use, make sure the suction is powerful enough to
avoid a too important dispersion of dust.
3.3. EDGE DELETION
3.4. EDGE WORKING

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The glass must be clean immediately after edge working (whatever the process uses) to avoid polluted
drying marks to remain on the coating. In case VISION-LITE® range is submitted to several processing
steps (edge working + drilling +…) each of them followed by washing, it is recommended to pass the
cut sizes in the same direction for each washing phase (to avoid possible generation of multiple crossed
scratches).
We recommend the use of the following installation. If the washing installation diers from the one
described here, we recommend that tests be carried out to check the washing quality (traces, rings, dust,
etc.) and to ensure that the installation does not damage the coating. Please contact your local TSM:
• Pre-washing area:
• Prewash ramp followed by one pair of cylindrical brushes
• Tap water between 30 and 40°C, preferably close to 40°C, without any detergent
• The prewash ramp is particularly important for the removal of the glass dust and splinters
created during the edge-working process
• Washing area:
• 2 pairs of cylindrical brushes
• demineralised water
• pH value comprised between 6 and 8;
• Rinsing area:
• Demineralised water at room temperature
• Maximum conductivity 20 μS/cm
• pH value comprised between 6 and 8;
• Brushes:
• Flexible (soft) clean polyamide bristles
• Maximum diameter of 0.2 mm, 20 - 40 mm long.
• Make care that all the brushes are perfectly clean and regularly maintained. Any hard brushes
must be lifted;
• Compatible rotation speed with soft coatings
3.5. WASHING
Generally carried out using manual cross belts to achieve arrissed edges (100 – 120 grit beltsare
recommended).
• The top belt should run downwards to minimise grit deposited on the coated surface;
• Horizontal roller backstops can be fitted to ensure consistent pressure and arriss width;
• The glass should be handled (with glass dust free gloves) at the edges to avoid damaging
the coating.
It is possible to grind the coated glass on vertical, CNC and double edger machines provided that the
handling instructions are observed and adaptations of the machines are made (if necessary, contact
your local Technical Support Manager). For double-edger and vertical machines, cleanliness and perfect
synchronization of the pressure belts must be checked.
The drilling of coated glass can be performed provided that the handling instructions are observed
and adaptations of the machines are made (if necessary, contact your local Technical Support Manager
- TSM). For special glazing application (e.g. spider glass) the coating may have to be placed on the
conveying rollers. In such a case, it is recommended to protect the coating with a low tack plastic film.
3.4.1. Manual Edge Working
3.4.2. Automatic Edge Working
3.4.3. Drilling

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3.6. TEMPERING / HEAT-STRENGTHENING
• Drying:
• Use an air-blowing installation equipped with filters
• Clean and regularly maintained filters;
• Water should be sprayed directly onto the glass, not onto the brushes (as per below drawing;
• The glass sheet does not stop inside the washing machine. The washed panes should not remain in
the washing unit for any length of time, especially not while the brushes are rotating;
• No water must remain on the coated surface after the drying process;
It is strongly recommended that the washing machine is regularly cleaned, especially for the brushes
and in areas where demineralised water is used. Clean the filters every day, and the tanks every week.
For the brushes, steam cleaning gives good results, but do not spray the bristles with high temperature
and high pressure water.
• In case dirt / stains are still present on the coating after the washer, cleaning may be performed
using a soft cloth and isopropanol (IPA) or ethanol followed by rapid drying, provided this is done
carefully and immediately after contamination has occurred.
• For interim stacking of washed panes, use cork pads near the edge of the sheets.
• In case, in a further step, for VISION-LITE® or VISION-LITE® II, it is of the highest importance that no
residues or marks are left on the coating surface after the exit of the pre-processing washing machine.
For instance, pollutions left on the coating may induce at tempering hot corrosion (giving the aspect of
pinholes) of the coating. Such marks may not be washable. Also, even in case of annealed version, there
is a risk that residues will be not eliminated during final washing.
VISION-LITE® II (and only the ‘to be tempered’ version) can be heat-treated to get a tempered / heat-
strengthened coated glass.
The cleanliness of VISION-LITE® II coating before entering the tempering furnace is important. From
the exit of the washer to the entrance of the tempering furnace, only the use of perfectly clean gloves
should be permitted. The coating may be gently cleaned with isopropanol (IPA) on the furnace entry
bed to remove dirt or marks (from gloves, separators, fingerprints…).
Special care and attention must be taken at every stage of processing, in particular before and during
the toughening process. Please consult your local TSM if necessary. Washed panes should be toughened
maximum 2 days after washing.
Generally speaking, VISION-LITE® II can be toughened using oven settings that are suitablefor standard
clear glass. The exact settings being of course furnace dependent cannot be given in these guidelines.
However, it is recommended that the sheets should be handled as “cold” as possible to achieve a flawless
coating after toughening and obtain the desired level of stress (breaking pattern). This means that the
temperatures and heating times are set so as just to avoid breakage in the blower box and to meet the
requirements for single-sheet safety glass.
3.6.1. General
3.6.2. Prerequisites for tempering / heat-strengthening
3.6.3. Toughening instructions

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Hereafter are some additional instructions:
• As VISION-LITE® II presents both faces with anti-reflective coating, the rollers and Kevlar® quality
must be checked in detail.
• Tin side must be placed upwards and as a consequence air side will face rollers. Experience has
shown that the sensitivity to overheating is more pronounced when air side is down – this allows
more flexibility in the adjustment of the tempering recipe.
The tin side and the air side of the VISION-LITE® II can be identified on the cutting table by looking for
the cutting line on the edge of the jumbo which is coming from the cutting wheel of the float line (air
side). Tin check from BOHLE in calibrating mode could be used too (lower value = air side), advantage
of the tool it that it could be used and works after grinding step and loose of face traceability. In case of
need of support, contact your local TSM.
• At description in introduction of part 3, if the furnace is equipped with a glass detection sensor
functioning by detecting the glass reflectance in order to signal the glass presence, this must be in
certain situations used manually; in fact, the very low reflectance of the VISION-LITE® II glass may
not be detected by the sensor and therefore it may not send the information to the equipment.
• Do not use SO2in the furnace when tempering VISION-LITE® II. Do stop SO2 right in time. SO2 may
remain in the furnace for up to 48h.
Heat-soaking toughened VISION-LITE® II cut sizes must be carried out in accordance with EN 14179
European standard. Every piece must be individually separated; the separating blocks may be made out
of PTFE (e.g. Teflon®) and contact with the coating should be limited to a minimum and located at the
extreme edge of the glass. Gas fired heat-Soak-Test furnaces with direct combustion in the oven must
not be used as hot fumes may damage the coating.
3.7. HEAT-SOAK TESTIN
VISION-LITE® II can be curved annealed (sagging process) or tempered (in tempering furnaces fitted
with a bending cell). Not all curvature radius may be attainable with convex or concave shape according
to the type of process used. The processor is then asked to check and validate that its bending process is
capable to obtain a good quality on a particular shape before giving a final oer for a project requesting
this shape.
SEMI VISION-LITE® (annealed version) cannot be curved.
3.8. BENDING

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Once again, the cleanliness of VISION-LITE® II coating before entering the enamelling process is
important.
VISION-LITE® II may be fully or partially enamelled using screen printing technique. Given the variety of
enamelling products, dierent operations and practical experiences, each processor should carry out
tests with its own equipment. It is processor responsibility to validate enamel material compatibility with
the layer and its adherence must be previously checked.
It is recommended that any oer for the possible supply of enameled VISION-LITE® II be subject to
previous acceptance by the client of samples produced in the operation concerned.
Only enamel without lead content may be applied.
Following toughening / heat-soaking or heat-strengthening, each pane should be separated with pads.
It is also possible to stack the individual panes with strips of 2 mm thick polyethylene – stretch – foam
film (in that case, particular care should be taken when stacking dierent glass dimensions).
• Glass panes must be stored vertically (at 3 to 7 degrees) under the following conditions:
• In a dry, well ventilated store, to prevent any condensation on the surface;
• Protected from rain and running water (any roof leaks must be rectified);
• Never outside or in the open air;
• Protected from wide changes in temperature and humidity levels (store coated glass products
far from opening doors).
• Clean, dry and soft gloves must be worn for all handling.
• In case heat-treated VISION-LITE® II is assembled into double-glazed units, this should be performed
within 2 days.
SEMI VISION-LITE® for annealed laminated glass or tempered SEMI VISION-LITE® II only can be laminated
with the coating outside the sandwich. It means that the lamination is always carried out on the glass
(uncoated) side. Never have the anti-reflective coating on the interlayer side.
• To assemble the glass, ensure that the calendaring rollers are in good condition (clean and no
particles of glass). Check that the circumferential speed is regular and corresponds to that of the
conveyor system. Clean o all deposits of PVB in contact with the coating before placing in the
furnaces or autoclaves.
• Apply the standard autoclaving cycles. Use dry spacers (example: wood) or protected spacers.
• When laminating heat treated SEMI VISION-LITE® II, it is important to take care that the PVB
thickness is adapted as to compensate the possible glass deformation (roller wave, bow, edge lift)
created during the heat-treatment process. Contact your local TSM if necessary.
3.9. ENAMELLING
3.10. HANDLING OF HEAT-TREATED GLASS
3.11. LAMINATION
It is recommended to assemble the panes in insulating glass units as quickly as possible. When
manufacturing double-glazed units using VISION-LITE® range, please follow the handling, cutting, and
washing instructions detailed above.
Important focus on drying marks and possible unwashed residues must be done. Indeed, all traces will
be more visible on antireflective coating than standard float glass. Good eciency of the washing and
drying at IGU line should be controlled regularly.
The coated glass must be washed before making it into insulating glass units. Recommended washing
3.12. MANUFACTURE OF INSULATING GLASS UNITS

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It is the responsibility of the processing plant to define and adjust the quality process control to match
the quality standards acceptable for its own market and in respect of relevant national requirements.
• Reception: Control of delivery document of the coated glass supplier. Visual inspection of the packs
(breakages, condensation…);
• After cutting:
• Visual aspect control (scratches, oxidation/corrosion, splinters etc.);
• Normal control of the cutting quality;
• After grinding / drilling / washing:
• Visual aspect control (scratches, oxidation/corrosion, splinters etc.);
• Visual control (as to whether the pane is completely dry);
• Check for suction cups or cork pad marks etc…;
• Normal control of the grinding / drilling quality;
• Prior to toughening (or heat-strengthening):
• Check for glass splinters (if present, remove them by rewashing);
• Check for marks, dirt… If any remove them by gently wiping the coating with a soft cloth and IPA;
• After toughening (or heat-strengthening):
• Visual aspect control (burns, cracks, scratches, oxidation/corrosion, haze…);
• Optical quality (distortion, bow etc.);
• Visual detection of roller wave;
• Normal control of the toughening quality (break pattern etc.);
• After heat-soak testing:
• Visual aspect control (scratches, oxidation/corrosion, splinters etc.);
• Check that no damage has been caused by separating blocks;
• On the insulating glazing unit line:
• Visual aspect control in conformity with the relevant national quality standard for double-glazed
units.
For plants just starting to use coated glass products, a system of “first o” inspection after each process
can be useful until experience is gained. Operator training and experience in identifying faults (which
are often dicult to see, especially before toughening) is important. In any case, a visit from your local
TSM should be organised.
3.13. PROCESSING QUALITY CHECKS
conditions are described in § 3.6.
• As for other processing steps, no roller blocked should mark the coating face against rollers.
• Any traces of sealant remaining on the coating after application must be removed immediately
before they harden. They can be cleaned o using a neutral product for windows and soft paper or
a soft cloth, or with a clean rubber scraper.
• All types of secondary seal can be used (polyurethane, polysulfide, silicone and hot melt). Check
with the sealant supplier that a particular reference has been validated with VISIONLITE® (II).

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4. Environment / waste glass / health issues
VISION-LITE® (II) coated glass products can be disposed of as per clear float glass.
Edge working residues have to be continuously and completely collected during the grinding process.
These residues must be further treated in compliance with national legislation about industrial wastes.
In some legislation, residues from grinding process have to be treated as toxic wastes.
As for any dust coming from the grinding process, any inhalation or skin contact of these residues must
be avoided.
On request, a Safety Use Instruction Sheet (SUIS) relating to the ECDirective 91/155/EEC can be supplied.
5. Glazing instructions
The selection of a suitable and practical glazing method depends on a variety of factors such as the size
of the glass, the exposure and the type of framing material and system.
Glazing and fixing techniques must comply with the recommendations of the relevant national standards.
Glazing blocks, frame size and maximum frame deflection for double-glazed units are not specific to
VISION-LITE® range glass products.
6. Protection, cleaning and maintenance of the end
products
As for other glass products, it is important with VISION-LITE® range glass products to respect the
following:
• In order to avoid damaging the glass with aggressive contaminants from site-works (e.g. paint,
plaster, mortar…), it is recommended that glazings are installed after all other work on site has
been completed. In case this cannot be respected, ecient protection of the glazing, by means of
polyethylene film for instance, must be put in place;
• Minimise, as far as possible, the amount of time that the glass is stored on site prior to installation;
• Follow the usual recommendations: store in a dry, well ventilated location, protected from adverse
weather conditions and variations in temperature and humidity;
• Avoid splashes of concrete, plaster, mortar residues as much as possible. To prevent a chemical attack
on the glass, such substances must be removed from the glass immediately. It is recommended that
the glass is cleaned as soon as it is installed.
• Glazing and fixing techniques must comply with the recommendations of the relevant national
standards. Glazing blocks, frame size and maximum frame deflection for doubleglazed units are not
specific to VISION-LITE® range glass products.
6.1. PROTECTION OF THE GLAZING DURING BUILDING WORKS
• Use of semi-permanent stickers (1-3 months) with vinyl frontal and acrylic adhesive is possible. This
kind of label represents main part of the label market. Label should not let residues or at minimum
residues easy to remove with water or with isopropanol.
• The identification labels on the glass sheets must be removed before or immediately after installation.
Do not use sharp/metallic tools for this purpose.
• To indicate the presence of the glass sheet, do not use materials such as lime, chalk or soap on
6.2. REMOVAL OF LABELS AND MARKINGS

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Alkaline products may be emitted from concrete, plaster, mortar... Such materials or materials containing
fluorine and acids will lead to a staining or matting of the surface. To prevent such an occurrence, all
such substances must be removed from the glass immediately. It is recommended that the glazing is
cleaned as soon as it is installed.
Cleaning means: washing, rinsing and drying the glass. A mild soap or neutral detergent can be used,
and subsequently and immediately rinsing with clear water. Excess water must be removed quickly.
Washing tools and towels must be free of abrasive particles. Never use abrasive cleaning products or
compounds likely to generate fluorine salts or hydrofluoric acid. Use of plastic squeegee is possible, just
be sure to not have abrasive parts blocked in it.
Grease, oil and materials used for facilitating the installation must be removed. The materials
recommended for cleaning the coating are isopropanol (IPA) or ethanol. Cleaning with the help of
solvents must be immediately followed by normal washing with water and rinsing.
The owner of the building must ensure the regular and proper maintenance of the glass. This entails
washing the windows, checking and if necessary repairing joints and frames, checking and, if necessary,
unclogging the drain and ventilation holes and detecting any anomaly.
6.3. CLEANING AND MAINTENANCE
the coating. If warning signs must be placed, we suggest fixing a notice or streamer to the frame,
making sure they do not touch the glass.
• Paint or strong stickers like used for promotional events must not be applied on VISIONLITE® range.
Above recommendations have to be considered.
7. Disclaimer
SAINT-GOBAIN GLASS has taken every reasonable measure to ensure that the information contained in
the present leaflet was exact at the time of its publication.
However, SAINT-GOBAIN GLASS keeps the right to modify or add any information without previous
notice. SAINT-GOBAIN GLASS is not liable for the possible lack of information on VISION-LITE® (II)
products that would not be contained in the present document.