PRODUCT DATA SHEET
WZ2146A / WZ2146B
POLYURETHANE ADHESIVE
TWO-COMPONENT, SOLVENT-FREE
PROPERTIES
●Specially designed for composite structure of PLASTIC/PLASTIC, AL/PLASTIC as substrate.
●With fine peeling strength after curing and stable friction factor.
●Plastic/plastic, aluminum/plastic laminated with anti-steaming & boiling of 121℃/30mins sterilization, like retort food packaging.
PHYSICAL PROPERTIES | ||
Type | WZ2146(A) | WZ2146(B) |
Appearance | light yellow clear liquid | light yellow clear liquid |
Solid content (%) | 100 | 100 |
Composition | -NCO | -OH |
Viscosity at 25 °C(mPa.s) | 1000-2000 | 800-1200 |
Density at 20 °C (g/cm³) | 1.20±0.05 | 1.10±0.05 |
OPERATION CONDITIONS
Applicable equipment | Solventless laminator (Manual mixing or Automatic mixing is available) |
Recommended mixing ratio | A:B=100：45~55 |
Recommended running speed | 200~300m/min |
Mixing temperature | 30-40℃ |
Fixed roller temperature | 35-45℃ |
Transfer roller temperature | 35-45℃ |
Compound roller temperature | 45-55℃ |
Operational time | The mixture of component A & B under prescribed mixing temperature should be consumed within 30 minutes |
Curing time at 40-50℃ with 70% of the environment humidity | 48-72hrs |
PACKAGING & STORAGE
| WZ2146A | 20 kg/Bucket |
| WZ2146B | 10 kg/Bucket |
The products are stored in sealed buckets, could be kept for 6 months at the temperature of 5~30℃. If opened, please consume it as soon as possible.
FURTHER INFO
A retort pouch is a plastic and metal foil laminate pouch that is used as an alternative to traditional industrial canning methods. A pouch is a bag with 3 or 4 wide seals, which can store liquid within. Some varieties have a bottom gusset and are known as Stand-Up Pouches. A Retort pouch, unlike metal cans or glass jars, are multilayer laminations allowing for the sterile packaging of a wide variety of food and drink, ranging from water to fully cooked, thermo-stabilized (heat-treated) high-caloric (1,300 on average) food such as Meals, Ready-to-Eat (MREs) which can be eaten cold, warmed by submersing in hot water, or through the use of a flameless ration heater. Retort pouches are used in field rations, space food, camping food, etc. Each layer of the lamination performs different function for the retort pouch. Some of the functions needed in a retort pouch are heat seal ability, thermal stability, gas barrier, rigidity and printability. These functions can be provided in either 3 or 4 layer structures depending on the situation. A retort pouch is created from a flexible metal-plastic laminate which is able to withstand thermal processing used for sterilisation. The food is first prepared sometimes even raw or semi cooked, and then sealed into the retort pouch. The pouch is then heated to 116-121°C for several minutes under high pressure, inside retort or autoclave machines. The food inside is cooked, similar to pressure cooking. This process reliably kills all commonly occurring micro-organisms preventing it from spoiling. The packaging process is very similar to canning, except that the package itself is flexible. The lamination structure doesn't allow permeation of gases from outside into the pouch.
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