PRODUCT DATA SHEET
WY2546A / WY2546B
POLYURETHANE ADHESIVE
TWO-COMPONENT, SOLVENT-FREE
DESCRIPTION
●Specially designed for structure of Plastic/plastic, Aluminum/plastic as substrate composite with resistance to boiling of 125℃/30mins sterilization .
●Fine resistance to ethyl maltol.
●Applicable to vacuum boil-in-bag packaging for cooked food.
PHYSICAL PROPERTIES | ||
Type | WY2546(A) | WY2546(B) |
Appearance | light yellow clear liquid | light yellow clear liquid |
Solid content (%) | 100 | 100 |
Composition | -NCO | -OH |
Viscosity at 25 °C(mPa.s) | 1500-2500 | 1000-2000 |
Density at 20 °C (g/cm³) | 1.170±0.005 | 1.105±0.005 |
OPERATION CONDITIONS
Applicable equipment | Solventless laminator (Manual mixing or Automatic mixing is available) |
Recommended mixing ratio | A:B=100：40~50 |
Recommended running speed | 200~300m/min |
Coating weight | 1.8g~2.0g |
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 | 24-48hrs |
PACKAGING & STORAGE
| WY2546A | 20 kg/Bucket |
| WY2546B | 20 kg/Bucket |
Note: 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
Solventless adhesives are 100% active products containing no water or solvent carrier. They are applied to base substrates using smooth roll transfer, solventless laminators and subsequently nipped/bonded to the secondary film to make the lamination. These laminations may contain multiple layers and are used in a broad array of food packaging applications including for snack foods, high performance retort, and microwavable packaging. These products meet a broad range of FDA regulations for packaging adhesives and are suitable for most films, foils, and paper.
It is critical to check and log oven drying temperature and follow recommended adhesive manufacturer’s guidelines for drying. In addition to visual and odor inspection of the laminate, gas chromatography/headspace will confirm ink and adhesive level of drying. Keep log of these results. Always follow manufacturer’s guidelines for nip temperature and check hardness of nip roller.
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