En-Tech Polymer Co.,Ltd
5 1

Hipol PA-308

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En-Tech Polymer Co.,Ltd
[Korea]

Address
Rm210, Jeil Plaza, 432 Pangyo Ro, Bundang-Ku, Seong Nam City Gyeonggi-do
Phone
82-31-7067452
Contact name
Tom, Kwon

Quick Information

  • Place of Origin: Korea

Description

Two-component solvent type adhesive for food packaging

HIPOL PA-308/HH-75

PA-308 is two-component type adhesive of polyurethane bases for food packaging.
The hardener HH-75 is used in combination, when dry lamination process, PA-308 has excellent adhesive strength to a wide variety of substrates including OPP, PET, NYLON, Cellophane, PS, PVC, AL foil, LLDPE, CPP, PAPER, metallized and PVDC coated film, etc.
And it especially provides excellent performance for retort food packaging caused by good adhesive strength and outstanding thermal resistance.
Besides PA-308 has a good performance as A.C(Anchor Coating) agent for Extrusion Lamination.

1. Typical properties

ITEM

PA-308

HH-75

Appearance

yellowish transparent liquid

Non-volatile(%)

59 ~ 61

74~76

Viscosity(cps, 25C)

2,000~4,000

1,000~2,000

Dilution Solvent

Ethylacetate

2. Recommended mixing ratio

Classification

Component

DRY LAMINATION

ANCHOR COATING

Adhesive

PA-308

18

18

Hardener

HH-75

2

4

Solvent

EA

20

70

N.V(%)

 

30.8

15

Viscosity(sec.)

Zahn cup #3

9.3

7.3

3. Applications

Application

Packaging composition

POUCH(for General)

PET or NYLON/LLDPE, PET/NYLON/CPP

AL POUCH

PET/AL/LLDPE, PET/AL/CPP, PET/AL/NYLON/CPP

RETORT POUCH

PET/AL/CPP, PET/AL/NYLON/CPP, PET/NYLON/AL/CPP

 

  

 

 

 

4. Recommended operating conditions for lamination
1) DRY LAMINATION
-  Dry chamber temp. : 70~90C
-  Cylinder : 100~130lines/inch (about 9g~12g/, wet)
-  Line speed : 60~80m/min.
-  Aging : 48hrs at 50C aging room.(pouch and AL pouch)
   96hrs at 50C aging room.(boil and retort pouch)
-  Nip roll temp. : 60~100C
-  Cleaning solvent : Ethylacetate, M.E.K
2) EXTRUSION LAMINATION(T-DIE)
-  Dry chamber temp. : 70~90C
-  Cylinder : 175lines/inch (about 6g/ wet)
-  Line speed : 60~100m/min.
-  Aging : 48hrs at 50C aging room.
-  Cleaning solvent : Ethylacetate, M.E.K

5. Influence of mixing ratio
Since PA-308 is reacted with HH-75 and is hardened, The peeling strength appears differently by mixing ratio.
The peeling strength is not so much affected if the deviation from the recommended mixing ratio is within 5~10% and no problems would be caused if it is used normally.
And a hardening is in proportion to aging temperature and aging time.

6. Influence of coating amount
If the coating amount which is coated on films too small,the appearance is not clear or bubble mixing, floating, roll mark, other defective appearances may be caused.
And the peeling strength is not enough either. On the other hand, if the coating amount is too much, such appearance troubles as the tunneling, blur, shrinkage, wrinkle, etc. may be resulted.
Generally speaking, the coating amount, 3.5~4g/(dry) could be recommended to obtain
excellent adhesive property.

7. Influence of aging conditions
Since PA-308 is the reactive type, a appropriate aging time and temperature is needed to reach
the maximum peeling strength after the lamination.
An appropriate aging time and temperature refers to an item 4.

8. Influence of applied Films
The peeling strength makes a difference according to each films.
Even if the source materials of the films are same, their peeling strengths can be quite different. It is because that the corona treatment or surface of the films are minutely different
according to manufactures and production facilities.

Therefore, you must sufficient lab test with films and adhesives before begin operating.

9. Packaging & storage

Classification

PA-308

HH-75

Net wt.(kg)

18

20

Storage

room temperature

room temperature

Term of guarantee

6 months

6 months

  

 

 

 

 

10. Caution on use

1) Since this adhesive contains inflammable solvent, please pay attention to heat of fire.
2) You should not reuse the remain adhesives(mixed adhesives) after use.
3) Recommended operating conditions as an item 4. can be in different with your operating conditions.
4) Please give attention to temperature, humidity after mixing adhesive and hardener.
5) Please, store this adhesive at a place where cool and dry.
6) Please read the MSDS document carefully before use.


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