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Solvent-Free Polyurethane Laminating Adhesive for High-Speed 300m/min Flexible Packaging with FDA Compliance and Odorless Formula

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Solvent-Free Polyurethane Laminating Adhesive for High-Speed 300m/min Flexible Packaging with FDA Compliance and Odorless Formula

Name: SolventFree Polyurethane Laminating Adhesive for HighSpeed 300mmin Flexible Packaging with FDA Compliance and Odorless Formula
Brand: Huitian
Price: 3.8 USD

Curing : 38-45C for 18-24 h

Supply Ability : 500 MT per Month

Place of Origin : Shanghai, China

Price : USD 3.8-7.0 / KG

Viscosity : 700-1800 / 700-1500 mPa.s at 25C

Delivery Time : 7-15 working days after payment

Mixing Ratio : 100:60 (w/w)

Pot Life : 40-50 minutes

MOQ : 20 KG

Model Number : 856A/856B

Compliance : FDA 175.105, GB9685, EU 2002/72/EC

Laminating Speed : 0-300 m/min

Certification : FDA 21 CFR 175.105, GB9685, EU 2002/72/EC

Coating Weight : 1.2-3.5 g/m2

Brand Name : Huitian

Packaging Details : 20KG/bucket or 200KG/drum, export-grade packaging

Packing : 20KG/bucket, 200KG/drum

Payment Terms : T/T, L/C

Product Type : Solvent-free two-component polyurethane laminating adhesive

Solid Content : 100%

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Product Overview

Weeton 856A/856B is a two-component solvent-free flexible packaging laminating adhesive widely used for plastic/plastic, plastic/aluminum and other composite structures, including high-strength pharmaceutical packaging foil and aluminized inner layers. It features high peel strength, excellent surface wettability, excellent heat resistance, long pot life and no smell, and meets the requirements of high-speed lamination from 0 to 300 m/min.

Key Features

High peel strength and excellent surface wettability
Supports high-speed lamination from 0 to 300 m/min
Excellent heat resistance and long pot life
Odorless; cured adhesive layer is transparent, elastic and aging-resistant
Suitable for boiling and steaming plastic/plastic structures
FDA 175.105, GB9685 and EU 2002/72/EC compliant after full curing
Does not affect the openability of the inner layer of composite film

Applications

PET/milky white PE and PET/PE structures
PET/CPP and PA/PE, PA/PCPP structures
AL/PE structures for ordinary media
High-strength pharmaceutical packaging foil and aluminized inner layers

Typical Technical Parameters

Parameter	Specification
Composition	Isocyanate component (856A) / Hydroxyl component (856B)
Mixing Ratio	100:60 (mass ratio), adjustable 100:50-70
Solid Content	100% / 100%
Viscosity (25C)	700-1800 mPa.s (A) / 700-1500 mPa.s (B)
Density	1.15 +/- 0.05 g/cm3 (A) / 1.15 +/- 0.05 g/cm3 (B)
Laminating Speed	0 - 300 m/min
Coating Weight	1.2 - 3.5 g/m2
Pot Life	About 40-50 minutes after mixing
Curing	38-45C for 18-24 h; foil structures 45-50C for 36-48 h
Compliance	FDA 175.105, GB9685, EU 2002/72/EC
Shelf Life	12 months unopened
Packing	20 KG/bucket, 200 KG/drum

Directions for Use & Precautions

Standard mass ratio is 100:60 (856A:856B); in high temperature and humidity reduce 856B content, and increase curing temperature and glue amount for CPP structures.
Set glue container, hose, metering and coating roller temperatures per the typical use parameters (35-42C seasonal).
Control precise tension and proper winding to prevent delamination, roll head size difference and film curl.
Cure at 38-45C for 18-24 h for rewinding and slitting; aluminum foil composites need 45-50C for 36-48 h.
When the machine is shut down over 40 minutes, clean the coating unit with a solvent/plasticizer mixture.
If 856B shows small lumps in cold winter, preheat in the drying room or dosing tank before use.
Install an efficient exhaust hood and follow isocyanate safety regulations.

FAQ

Q: What is the maximum lamination speed of 856A/856B?

A: 856A/856B supports high-speed lamination from 0 to 300 m/min, making it ideal for high-output flexible packaging lines.

Q: Is 856A/856B suitable for pharmaceutical packaging?

A: Yes, it is widely used for high-strength pharmaceutical packaging foil and aluminized inner-layer structures, and complies with FDA 175.105, GB9685 and EU 2002/72/EC.

Q: Can 856A/856B withstand boiling and steaming?

A: Yes, it is suitable for boiling and steaming of plastic/plastic composite structures, with excellent heat resistance.

Q: What is the pot life of 856A/856B?

A: The pot life is about 40-50 minutes after mixing at the standard 100:60 ratio, offering reliable workability on the line.

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