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 >> PU-8850A/Bethanol soluble polyurethane complex adhesive
PU-8870A/B ethanol soluble polyurethane complex adhesive
  Overview
   PU-8870A/B adhesive is common bi-component adhesive. It can be used in the compounding of BOPP, BOPET, BOPA material and CPP, PE foil.
  Properties
Product name PU-8870AMain adhesive PU-8870B firming agent
Appearance Transparent viscous liquid Transparent viscous liquid
Viscosity mPa.s(25℃) 6000±2500 30±10
Solid content(%) 70±2 70±2
  Characteristics

1, It has high solid content with well economical efficiency.

2, It has well adhesive force and extremely well transparency.

3, Low residue

4, It has well mechanism manufacture performance.

  Using method

1, Standard proportion: Main adhesive: firming agent=6:1

2, Dilution: adding alcohol in main adhesive.

3, The change of work concentration and viscosity diluted by alcohol is shown as the picture.

PU-8870A(kg) PU-8870B(kg) Ethyl acetate(kg) Work concentration(%) Viscosity (s)
6 1 7.0 35 30-32
6 1 8.3 32 23-25
6 1 9.3 30 20-22
6 1 10.5 28 17-19
6 1 12.6 25 15-17

4, Glue spread calculation formula: dry glue spread (g/m2 ) =1/5~1/6×work concentration%×net depth, including 1/5~1/6 percent conversion.

5, Glue spread amount: complex dry glue spread can be chosen between 1.5-3.0g/m2 and the recommended work concentration is about 30%.

6, Dry:In order to promote solvent volatilization in foil glue, try to increase dry efficiency of compounding machine.

7, Lamination:Try to increase complex hot quinine temperature and pressure and the hot quinine temperature can be chosen between 50~90℃.

8, Curing:After composition, it should be sent to curing room as soon as possible. Under the 50±5℃ condition, curing for 12 hours can achieve prospective strength.

  Notice

1, the disposition of glue should be set according to needs.

2, The composite material, such as BOPP, BOPET, BOPA, CPP and PE, needs surface treatment.

3, When using BOPET printing foil and PE, CPP, it may not reach prospective strength, so it should be replaced by glue.

4, The additive content in foil can influence composite foil adhesive strength.

5, If the glue has any quality problem, stop its using and keep the unused glue.

6, It can no t be mixed with other adhesive.

7, It can not be used in boiling and steaming.

8, It can not be used in surface ink printing foil composition

9, It is flammable product.

  Packing and storage

PU-8870A(Main adhesive) 18Kg/drum  PU-8870B( firming agent) 3Kg×6can/box(24Kg)

Main adhesive expiration date is 1 year firming agent is 6 months.

    The above information is for reference. All our products have been controlled and tested strictly in our factory. The customers should do experiment before using. If the customer makes any minus effect, any responsibility is none of our business.

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