How To Identify The Type Of Transparent Laminating Film

- Oct 24, 2017 -

Daily use to the transparent vacuum bag and transparent packaging laminating film, the appearance is not see the difference, but the use of the effect is completely different, and some need to vacuum packaging storage, some are refrigerated packaging, some high temperature cooking packaging, All kinds of packaging using the composite materials are not the same, how to identify these materials? In general, it should be considered from the following aspects: thickness, stretching, burning, solvent, transparency, odor, and other.

OPP laminating film

1, thickness: OPP laminating film commonly used thickness of 20 ~ 40um, plastic bag thickness of OPP 55um;

2, tensile strength and transparency: OPP laminating film vertical and horizontal have a higher tensile strength, the appearance is very transparent;

3, burning and smell: OPP burning without smoke, after a bit white smoke, and sour;

4, solvent: solvent does not reflect;

5, OPP laminating film has a good waterproof, moisture permeability.

CPP, PE

1, burning: burning when the candle flavor, and white smoke;

2, stretching: the longitudinal direction is greater than the transverse tensile strength;

3, transparency: CPP> PE;

4, CPP in the heat sealing laminating film is the best: high temperature 130 ℃, but can not be low temperature, 0 ℃ below optional CPP.

CPE

1, laminating film tensile strength: transverse tensile strength greater than the longitudinal tensile strength;

2, burning: burning white smoke, and a candle flavor;

3, solvent: then the solvent does not reflect;

4, cast production. ⊕

PET

1, the laminating film commonly used thickness of 12um;

2, longitudinal and transverse tensile strength than OPP film is good;

3, transparency is better than OPP film;

4, burning black smoke, tasteless;

5, PET laminating film than other films have to ring;

6, PET laminating film has a good oxygen barrier, so good fragrance;

7, high temperature, can be sealed at a very high temperature;

8, VMPET single-sided aluminum, a small piece of friction before the production, a friction surface for the aluminum surface, for the composite printing surface.



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