film lamination glue for flexible packaging material

Very high performance,specialized to laminate structural plastic/plastic , resist to steaming at 135C/ 30min

 

 

 

HT3135A/HT3135B Double-Component Solvent Polyurethane Adhesive

(Ester based, high temperature steaming)

 

1.       Description

HT3135A/B is a kind of dry laminating double-component ester solvent polyurethane adhesive, widely used in laminating of various treated film like BOPP PET NY PE CPP AL Paper etc .

 

2.       Technical Specification

Item	HT3135A	HT3135B
Type	Main agent	Hardener
Ingredient	Polyester polyol agent	Isocyanate-terminated Polymer
Appearance	Light yellow transparent liquid	Light yellow transparent liquid
Solid Content(%)	50±2	75±2
Viscosity (mPa.s)	2500±1000(25C.degree)	2750±1250(20C.degree)
Solvent	Ethyl acetate	Ethyl acetate
Mix Proportion	10	1

 

3.        features:

     a,HT3135A/B is specialized to laminate the film which use to package the contents which need to be steamed at 135 ceti degree less than 30 minutes in the producing , HT3135A/B is used to produce the packaging film with structural plastic/plastic and Aluminum/plastic, especially suitable for structural Aluminum/plastic.

     b,High initial and final bonding strength, good peeling strength.

     c,With a certain anti-medium and anticorrosive effect, good working property.

     d,It complied with US FDA 21CFR175.105.

 

4.       Mix Ratio By Weight

Solid content %

HT3135A KGS

HT3135B KGS

Ethyl Acetate KGS

Viscosity(Zahn cup#3/25)(s)

30

10

1

8.2

22.9

25

10

1

12.0

16.5

20

10

1

17.8

13.5

15

10

1

27.3

12.1

Solvent is ethyl acetate, acetone, MEK,  the water content should be less than 0.03%, the alcohol content should be less than 0.02%, Ethyl acetate is recommended.

 

Operation Instruction:

     Standard mix ratio: HT3135A to HT3135B=10:1, in case of high humidity circumstance, please add more hardener, please choose the proportion according to operation environment.

     Dilution: add the solvent to the main agent, stir fully , then add the hardener ,please input all of the hardener , if can not , input some solvent into hardener barrel to wash out , then stir fully again .

     Working concentration: 20-40%, best working concentration is 30%

     The coating weight: the coated weight on dry base is generally 4.0-5.5g/, but should be changed by the type of film and the weight of the filler .

     Evaporation: For evaporating the solvent completely, the drying tunnels should generate enough air speed , air volume and suitable temperature . If the drying device is three sections structure. The temperature from entrance to exit should be 50-60,60-70, 70-80 C.degree respectively.

     It is recommended to raise the pressure and temperature as possible, but do it without damaging the film. The laminating rollers temperature : shall be set to 75-85 generally.

     Curing: The products laminated will be cured at 50-60 C.degree for 72 hours.

Curing chart (curing time/reactive rate)

Circumstance:   Temperature 50 , Absolute dry room

Curing Timeh

0

3 .0

8 .0

24 .0

48 .0

72.0

-NCO reduction rate( %)

0

26.8

43.7

61.2

74.5

83.4

 

 

5.       Package

Main agent is 20kg/barrel. Hardener is 2kg/barrel.

 

6.       Storage

HT3135A/B is flammable material, Please keep it in cool and dry place,  its quality guarantee is 12 months for major agent and 10months for hardener. Please use up quickly as possible after open the package.

 

7.       Important notice

These documents we provided are made on the basis of our recent knowledge and experience, all these terms we mentioned are only suitable in normal condition and could be used as references. Please test and affirm before formal production or contact with our technician to some especial structures of films and stuffs packed, we do not take on any legal duty for these documents.