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FILM DESCRIPTION
Two sides heat sealable, one side treated coextruded biaxially oriented polypropylene opaque white film, suitable for:
Rotogravure and flexographc printing.
Horizontal and vertical packaging machines (HFFS – VFFS).
General overwrapping purposes.
CHARACTERISTICS
Milky white appearance.
Good protection against light.
Two sides heat sealable with excellent hot tack.
Excellent ink adhesion on treated side.
Good barrier to moisture, odours and gases.
APPLICATIONS
Food packaging (candies, snacks, chocolate and biscuit).
packaging (soaps, and cosmetics).
Properties unit Test method Tolerance Typical value
Thickness

micron

-- ±3% 25 30 35 40
Yield m²/ kgm -- ±3% 41.45 34.54 29.61 25.91
Unit weight gm/m² -- ±3% 24.12 28.95 33.77 38.6

Tensile strength

MD
TD
N/mm² ASTM D 882
Min.
Min.
100 100 100 100
240 240 240 240
Breaking elongation MD
TD
% ASTM D 882
± 20
± 10
160 160 160 160
50 50 50 50

Modulus of elasticity

MD
TD
N/mm² ASTM D 882
Min.
Min.
1400 1400 1400 1400
2300 2300 2300 2300
Heat
shrinkage
MD
TD
% In air, in oven
For 5 min.
At 130 ºC
Max.
Max.
4 4 4 4
2 2 2 2
Optical
density
% Tobias Denstiometer Min. 0.5 0.55 0.58 0.62
Gloss G.U. ASTM D 2457 Min. 40 40 40 40
Coefficient of friction -- ASTM D 1894 ± 0.05 0.3 0.3 0.3 0.3
Water vapour permeability g/m².24 hrs
at 38 ºC
90% RH
ASTM E
96-66
BS 3177
Max. 6.5 5.5 4.5 4
Oxygen permeability cc/m². 24hrs Bar, at 23ºC,
0% RH
ASTM D
1434
Bs 2782 –
514 A
Max. 1800 1500 1300 1150
Heat seal range ºC OPMA Method -- 120-145 120- 145 120-145 120-145
Denisty Kgm/m³ ASTM D 1505 ± 0.05 0.965 0.965 0.965 0.965

 

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