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866A 866B Solvent-Free Polyurethane Adhesive with Medium Resistance High Strength and 121C x 40 min Steaming Resistance for Flexible Packaging

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866A 866B Solvent-Free Polyurethane Adhesive with Medium Resistance High Strength and 121C x 40 min Steaming Resistance for Flexible Packaging

Name: 866A 866B SolventFree Polyurethane Adhesive with Medium Resistance High Strength and 121C x 40 min Steaming Resistance for Flexible Packaging
Brand: Huitian
Price: 3.5 USD

Place of Origin : Shanghai, China

Price : USD 3.5-6.5 / KG

Certification : ISO 9001:2015

Supply Ability : 500 MT per Month

Brand Name : Huitian

Payment Terms : T/T, L/C

Steaming Resistance : 121C x 40 min

Delivery Time : 7-15 working days after payment

Solid Content : 100%

Density : 1.17 / 1.10 g/cm3

MOQ : 20 KG

Viscosity : 4500-7500 / 3500-6500 mPa.s at 25C

Packing : 20kg/barrel, 200kg/drum

Coating Amount : 1.0-2.2 g/m2

Mixing Ratio : 100:80 (w/w)

Medium Resistance : Oil, acid, alkali resistant

Product Type : Two-component solvent-free polyurethane adhesive

Model Number : 866A/866B

Packaging Details : 20kg/barrel or 200kg/drum, export-grade packaging

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Product Overview

Huitian 866A/866B two-component solvent-free polyurethane adhesive is engineered for the inner layer lamination of boiling and steaming flexible packaging. The adhesive features moderate viscosity, excellent wettability and certain medium resistance, delivering high strength and good inner layer smoothness without affecting film openability.

Key Features

Certain medium resistance for oil, acid and alkali exposure
High bond strength for demanding packaging structures
Good inner layer smoothness and film openability
100% solids solvent-free with excellent wettability
Translucent, elastic and anti-aging cured adhesive layer
Withstands water boiling and steaming performance requirements

Applications

Inner layer lamination of retort and boiling pouches
PET/AL/RCPP, PET/AL/NY/RCPP steaming structures
NY/RCPP and PET/VMPET/PET/PE combinations
Flexible packaging requiring medium chemical resistance

Typical Technical Parameters

Parameter	Specification
Composition	Isocyanate (866A) / Hydroxyl (866B)
Mixing Ratio	100:80 (w/w), adjustable 100:65-85
Solid Content	100% / 100%
Viscosity (25C)	4500-7500 mPa.s (A) / 3500-6500 mPa.s (B)
Density	1.17 +/- 0.05 g/cm3 (A) / 1.10 +/- 0.05 g/cm3 (B)
Steaming Resistance	121C x 40 minutes
Coating Amount	1.0 - 2.2 g/m2
Shelf Life	9 months (A) / 12 months (B)
Packing	20 kg/barrel, 200 kg/drum

Directions for Use & Precautions

Mix at the standard mass ratio of 100:80 (866A:866B) in an automatic glue mixer.
Corona-treat films to reach appropriate surface tension before lamination.
Adjust the ratio between 100:65 and 100:85 according to ambient humidity and lamination structure.
Verify outer high-barrier structures (PET/AL, PET/VMPET) with full process testing.
Seal opened containers immediately to prevent moisture absorption.
Install exhaust hood on the coating system and check isocyanate concentration before production.

FAQ

Q: What does medium resistance mean for 866A/866B?

A: The cured adhesive layer provides certain resistance to common media such as oil, acid and alkali, protecting the laminate in boiling and steaming applications.

Q: Does 866A/866B affect the openability of laminated film?

A: No. The product is specially designed so it does not affect the openability of the inner layer of the laminated film.

Q: What structures is it recommended for?

A: It is recommended for the inner layer of PET/AL/RCPP and PET/AL/NY/RCPP steaming structures, plus PET/VMPET/PET/PE combinations.

Q: Can the mixing ratio be adjusted?

A: Yes. Depending on ambient humidity and film structure, the ratio can vary between 100:65 and 100:85.

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