The following instructions will help you achieve the longest possible shelf life for your temperature sensitive product.

Storage
Before use, Chill Wrap ice replacement should be stored in a dry atmosphere, out of direct sunlight and with the carton sealed. Keep the opened carton closed between uses to prevent contamination from moisture and dust.

How much Chill Wrap?
As a rule of thumb, for 15kg of chilled product use 400g to 500g for periods of 1 to 16 hours, 800g to 1000g cells for longer periods. Please note that the amount of Chill Wrap you use is directly proportional to the amount of heat it needs to absorb. You need to consider the heat your package will be subjected to throughout the cool chain. Small scale experiments with typical products are strongly recommended.

Soaking (Hydrating)

1. Put the required number of sheets into a tub containing plenty of fresh, potable water.
2. Each cell will absorb a set amount of water. No measuring is necessary.
3. Leave the Chill Wrap sheets in the water for 15 to 25 minutes or until the cells have soaked up the maximum amount of water (they should be firm when you squeeze them).

If needed in a hurry, soak the sheets in warm water as they fill up faster.

   
Click on the pictures for a closer view

Freezing
Remove the hydrated sheets and drain or shake the surface water from them.
During the freezing process the sheets may be laid on top of each other, up to 5 sheets high.
Take care to keep the plastic (shiny) surface of all sheets facing down. This will help prevent sticking.

Storing Hydrated Chill Wrap in your Freezer
Once frozen, the sheets may be rolled or stacked flat.
Packing frozen sheets in a ventilated plastic crate and leaving them in the freezer is a common storage method.

Using

• Ideally the Chill Wrap Ice Replacement sheets will be placed flat across the top of your product to provide even cooling. You can also place some in the bottom of the package, roll it into a cylindrical shape or wrap it around suitably shaped products.   
• In general, place the sheets between the the packaging and your product rather than between layers of product. Chill Wrap is designed to absorb heat coming into the package rather than for cooling the product itself.
• Make sure you chill your product to the desired temperature (between 0°C and 9°C) before packing. If possible, chill the outer packaging to the same temperature.
• If the frozen sheets should not directly contact the product, a thin cardboard sheet can be placed between the product and the Chill-Wrap. Leave a gap between the perimeter of the cardboard sheet and the packaging to allow air circulation.

Cellular Construction of Chill Wrap

A cell has been marked in black. Each square or "cell" will absorb a limited amount of liquid (18ml, 36ml or 50ml). Counting the cells will tell you how much liquid a sheet of Chill Wrap will absorb. For example, a sheet with 10 cells of 50ml each will hold 10 x 50 = 500ml (0.5 litres) and will weigh about 0.5kg.

Back to the Chill Wrap Technical Data page.

Cell Sizes

What is a Cell?

Chill-Wrap can be made in three different cell sizes -
55mm x 55mm - holds 18ml of fresh water
64mm x 70mm - holds 36ml of fresh water
75mm x 75mm - holds 50ml of fresh water

The weight of gel in each Chill Wrap ice replacement sheet is determined by the number and size of cells in each sheet. Sheets can be perforated for further separation into smaller sizes.
Chill Wrap is supplied in cartons, with an inner polybag containing precut sheets. Some standard configurations are shown in the following table.

Chill Wrap Data

Super Chill Data

Compressive Strength
The compressive strength exceeds 35kg per cell.

Packaging
A cardboard outer carton with a polythene liner bag contains the Chill Wrap sheets. There are no perforations in the sheets.

Materials
The outer casing is formed from laminated polyethylene thermo-bonded to a sheet of self-sealing, non-woven polyester fabric. No adhesives are used during its construction and the plastic backing prevents adjacent sheets from sticking when freezing.

The absorbent powder is a unique formula of Sodium Polyacrylate with a free monomer level of less than 1g/kg.

The fabrics from which Chill Wrap is made comply with USFDA Title 21 requirements for products in contact with food.

Storage
Before use, Thermasorb absorbent pads should be stored in a dry atmosphere, out of direct sunlight and with the carton sealed. Keep the opened carton closed between uses to prevent contamination from moisture and dust.

Which Absorbent Pad should I choose?
The choice of pad will be governed by the amount of absorption required and the size of the package it will go into. Please remember that the absorbency of the pad will be noticeably affected by the salinity (salt content) of the liquid you need to absorb. Contact Us for guidance.

How do I use Absorbent Pads?
The manner of use will depend on the type of pad and its exact application. The following are general gudelines.

The small retail tray pads should be placed in the base of the tray with the shiny (plastic) side facing up towards the product. This will prevent the pad from drawing moisture directly out of the product.
For use with whole bagged chickens, the pad should be placed in the bag at its lowest point when displayed, with the shiny side against the chicken.

The seafood pads should be placed in the base of the container inside any polyliner. The shiny (plastic) side should be in contact with the product.
When a pad is only being used to absorb leakage from a polyliner or bag, rather than the product itself then the pad should be placed in the base of the package, outside the liner.

Meat Pads are placed inside the vacuum packing bag with the shiny (plastic) side against the meat.

Pad Disposal
After opening the package, remove the pad and dispose according to local regulations. Thermasorb Absorbent Pads are are safe to burn and will not produce any toxic emissions.