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Two-Component Solvent-Free Polyurethane Adhesive for PET/AL/RCPP Retort Pouch with 121C Steam Sterilization

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Two-Component Solvent-Free Polyurethane Adhesive for PET/AL/RCPP Retort Pouch with 121C Steam Sterilization

Name: TwoComponent SolventFree Polyurethane Adhesive for PETALRCPP Retort Pouch with 121C Steam Sterilization
Brand: Huitian
Price: 3.5 USD

Certification : ISO 9001:2015

Mixing Ratio : 100:80 (w/w)

Product Type : Two-component solvent-free polyurethane adhesive

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

Brand Name : Huitian

MOQ : 20 KG

Payment Terms : T/T, L/C

Delivery Time : 7-15 working days after payment

Coating Amount : 1.0-2.2 g/m2

Packing : 20kg/barrel, 200kg/drum

Place of Origin : Shanghai, China

Price : USD 3.5-6.5 / KG

Solid Content : 100%

Steaming Resistance : 121C x 40 minutes

Shelf Life : 9-12 months

Model Number : 866A/866B

Density : 1.17 g/cm3 (A) / 1.10 g/cm3 (B)

Supply Ability : 500 MT per Month

Viscosity : 4500-7500 mPa.s (A) / 3500-6500 mPa.s (B) at 25C

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Product Overview

Huitian 866A/866B is a two-component solvent-free polyurethane adhesive developed for flexible packaging lamination. It is recommended for the inner layer of PET/AL/RCPP and PET/AL/NY/RCPP steaming structures. The cured adhesive layer withstands steaming at 121C for 40 minutes and features excellent medium resistance, high bond strength and good inner layer smoothness.

Key Features

100% solids solvent-free system with moderate viscosity and excellent wettability
Withstands retort steaming at 121C for 40 minutes
High bond strength with good medium (oil, acid, alkali) resistance
Translucent, elastic and anti-aging adhesive layer after curing
Does not affect the openability of the inner layer of laminated film
Meets water boiling and steaming performance requirements

Applications

PET/AL/RCPP and NY/RCPP lamination structures
PET/AL/NY/RCPP retort pouch structures
PET/VMPET/PET/PE high-barrier flexible packaging
Food and pharmaceutical retort packaging lamination

Typical Technical Parameters

Parameter	Specification
Composition	Isocyanate (866A) / Hydroxyl (866B)
Mixing Ratio	100:80 (w/w), adjustable 100:65-85 by humidity and structure
Solid Content	100% / 100%
Viscosity (25C)	4500-7500 mPa.s (A) / 3500-6500 mPa.s (B)
Appearance	Colorless translucent liquid (A) / Yellow translucent liquid (B)
Density	1.17 +/- 0.05 g/cm3 (A) / 1.10 +/- 0.05 g/cm3 (B)
Coating Amount	1.0 - 2.2 g/m2 depending on lamination structure
Shelf Life	9 months (866A) / 12 months (866B) unopened
Packing	20 kg/barrel, 200 kg/drum

Directions for Use & Precautions

Mix 866A and 866B at the standard mass ratio of 100:80 in an automatic glue mixer before use.
Set glue mixing and coating temperatures according to the typical use parameters in the TDS; adjust to actual conditions.
Films must receive corona treatment to achieve appropriate surface tension before lamination.
Full process verification is required for outer high-barrier structures such as PET/AL and PET/VMPET.
Seal containers immediately after opening to avoid moisture absorption and bubble formation.
Install an effective exhaust hood on the coating system and monitor isocyanate content in the air.
Store in a cool dry place away from direct sunlight; perform lamination trials before mass production.

FAQ

Q: Can 866A/866B be used for retort pouches?

A: Yes. 866A/866B is specially designed for the inner layer of PET/AL/RCPP and PET/AL/NY/RCPP steaming structures and can withstand steaming at 121C for 40 minutes.

Q: Is 866A/866B a solvent-free adhesive?

A: Yes, both components are 100% solids solvent-free, which eliminates residual solvent risks and meets environmental requirements.

Q: What is the mixing ratio of 866A and 866B?

A: The standard mass ratio is 100:80 (866A:866B). It can be fine-tuned between 100:65 and 100:85 depending on ambient humidity and film lamination structure.

Q: What is the coating amount?

A: The recommended coating amount ranges from 1.0 g/m2 to 2.2 g/m2 depending on the film/foil combination and end use of the laminated film.

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