Curtec Nestable User manual

Manual
Nestable drums
October 2014

0807
Washing
The washing instructions below apply to the cleaning of all CurTec
packaging products that are made of polyethylene and
polypropylene.
Best results will be achieved with a washing installation that is
equipped with spray nozzles or a so-called Ultra-Sonic
installation.
Best qualified detergent is a low-foaming alkaline substance with a
PH-value of 10 to 12 (solvents.)
The recommended temperature of the washing water lies
between 40°C and 50°C.
The temperature of the rinsing water can only be up to 65°C.
To prevent the plastic from shrinking, you must make sure it
does not warm up completely to the recommended
temparatures of washing and rinsing. Therefor the time for
washing cannot exceed 30 to 35 seconds and rinsing cannot take
longer than 20 seconds.
Increased drying of products can be effected by means of
applying cold air. If warm air will be used the drying can only last
up to 30 seconds at a maximum temperature of 65°C.
The blowing and drying part of the installation needs to be
adjusted to the product, so those difficult spots of the kegs can
also be dried.
For specific technical information CurTec would like to refer to
the various suppliers of washing installations.
Attention! Check the thermostat and programmed times of your
equipment regularly.

Nestable drums manual 1205
1Close
The UN marking on a drum is only valid if the following closing
instruction is applied.
1. Put the lid on the drum and turn it clockwise by hand until it is
closed tightly.
2. Turn the lid 30° clockwise using a tool. Only now the drum is
closed liquid tight and the UN marking is valid,
3. After closing the drum you can make the container tamper
evident. For that purpose the lid and the container have sealing
loops. CurTec advises you to use Unisto Compact seals.

Nestable drums manual 0908
2Open
1. In case a drum is sealed, tear the seal and remove it from the
loops.
2. Turn the lid counter-clockwise to open.
Unstacking
When you unstack the drums, the rubber gasket is compressed due
to the total weight of the drums on top. After unstacking, before
handling the kegs we strongly advise you to leave them in an upright
position for at least 15 minutes. This gives the gaskets the
opportunity to restore themselves to their original form and
guarantee a watertight closure.

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3Use
Filling
The temperature of the content cannot exceed 70°C. The content
has to cool down to 30°C before the container can be closed. A
container can be filled to the rim so that no air is left above the
contents. The container can be closed according to instruction 2.
Emptying
The packaging can be opened according to instruction 2. Use the
rim and the bottom to tilt the container and pour the contents.
Lifting
Depending on the type of drum, you can lift the container by using
the large handgrips on the body or the handgrips on the lid.
Attention! Please consider the HSE regulations regarding weight and
frequency restrictions for lifting.
Freezing
The plastic of which the packaging is made is resistant to
temperatures of minimum -25°C. Shock load on the containers must
be avoided at temperatures below -5°C.
Attention! A container filled with a water based content can only be filled
up to 90% of its capacity when frozen. This prevents the contents from
expanding and the container from distorting.

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Air transport
We recommend shipment in pressurized cargo holds for air
transport of all packaging products. We cannot guarantee optimal or
correct performance of our packaging when shipped in cargo holds
without pressure regulation.

Nestable drum manual 1410
4Static load
When stacking the drums for storage in e.g. a warehouse or cold
store it is important to know what the maximum stacking load can
be on the bottom container. The stacking load depends strongly on:
the container weight, the number of containers to be stacked, the
weight of interlayers and pallets, surrounding temperature, the
duration of the load and the surface beneath the bottom containers.
The table below shows for each drum the maximum stacking load
(in kg) at a given surrounding temperature during a certain period of
time placed on a flat and closed surface or pallet.
Max. temp °C
0
0
0
15
15
15
25
25
25
35
35
Months
1
4
12
1
4
12
1
4
12
0,5
6
7230
250
200
180
160
130
110
110
90
80
85
65
7240
250
200
180
160
130
110
110
90
80
85
65
7250
250
200
180
160
130
110
110
90
80
85
65
7260
250
200
180
160
130
110
110
90
80
85
65
7276
370
310
270
240
200
175
180
150
130
145
105
7294
370
310
270
240
200
175
180
150
130
145
105
On the basis of the table the number of containers that may be
stacked can be calculated. It is the stacking load mentioned reduced
by the carrying part of the pallet’s interlayers, divided by the
container weight. This number, with figures behind the comma
smaller than eight, rounded off + 1 = total number of drums.
Example
How high can a 7240 drum with contents of 45 kg, at 15°C, during
1 month, be stacked on a pallet? 160/ 45 = 3.5. The number of
drums that can be stacked is 3 + 1 = 4.
In case of an unspecific time or temperature please look in the next
appropriate column. If you want to know what the stacking load is
with shorter periods of time, the table in instruction 5 Dynamic
load can be of service.
Before stacking the drums the temperature of the contents must
be equal or lower than the surrounding temperature.

Nestable drum manual 1410
The maximum stacking time is reduced considerably at a
temperature higher than 35°C. The stacking load in the table
amounts at 50°C to only 75% of the value last mentioned and at
a temperature of 60°C to only 50%.
In case a stack is higher than 2.5 metres the floor angle cannot be
more than 0.5%.
CurTec strongly advises against stacking the containers
horizontally, lying on the side. Due to a heavy and long-term load
and especially a high temperature the containers can distort. In
case the drums are filled again the distortion must be restored
before stacking.
At the transit of one transport form to another, from storage to
transport or from transport to storage, the bottom containers
must be placed highest in the new stack.
Attention!
The loads mentioned in the table can only serve as indications.
CurTec always advises its customers to perform additional testing..

Nestable drums manual 1410
5Dynamic load
Before stacking drums for transport it is important to know what the
maximum stacking load on the bottom container of the stack is.
With transport this stacking load is called dynamic load and can be
found by dividing the admissible static load by a so-called safety
factor. These factors are:

3
for transport by air

2
for transport by road

1.8
for transport by rail

1.3
transport by water
The static load mentioned in the table depends strongly on the
temperature and time indicated: 5°C is the temperature for cooled
transport, 30°C is the temperature for the average transport by
road or inland waterways and 40°C is the temperature for transport
in warmer surroundings. In case of an unspecific time or
temperature, below 40°C, please look in the next appropriate
column. In case the temperature rises even more, please be aware
that at 50°C the load can only be 75% and at 60°C only 50% of the
load at 40°C.
On the basis of the table the number of containers that may be
stacked can be calculated. It is the stacking load mentioned divided
by the product of the keg weight and the relevant safety factor. This
number, with figures behind the comma smaller than 8, rounded off
+ 1 = total number of containers.
Max. temp °C
5
5
5
5
5
30
30
30
30
30
40
40
40
40
40
Weeks
0,5
1
2
3
5
0,5
1
2
3
5
0,5
1
2
3
5
7230
275
245
225
215
205
135
125
115
105
100
100
87
82
78
73
7240
275
245
225
215
205
135
125
115
105
100
100
87
82
78
73
7250
275
245
225
215
205
135
125
115
105
100
100
87
82
78
73
7260
275
245
225
215
205
135
125
115
105
100
100
87
82
78
73
7276
418
384
352
335
314
204
187
171
163
153
153
140
129
122
115
7294
418
384
352
335
314
204
187
171
163
153
153
140
129
122
115

Nestable drums manual 1410
The containers must be stowed professionally and fixed in a way
that makes shifting impossible.
The maximum stacking time will be reduced considerably at
temperatures higher than 35° C. The stacking load in the table
amounts at 50°C to only 75% of the value last mentioned and at
a temperature of 60°C to only 50%.
See 6Palletisation for the choice of pallets.
See 4Static load for storage in a warehouse.
Attention! The loads mentioned in the table can only serve as indications.
CurTec always advises its customers to perform additional testing.