Properties


The oriented polypropylene film is characterized by such features as good weldability, high transparency, gloss and favourable mechanical properties. Moreover, it has low steam and aroma permeability. Another characteristic feature of the transparent film are slipping and antiblocking properties facilitating the operation of packaging machines. By standard, it is offered as one-side activated film (with the activation at the outer side of the roll). The use of outer weldable layers enables its welding below the polypropylene melting point. The selection of welding temperatures depends on the characteristics of welding electrodes and welding rate.

Application

The oriented two-side weldable polypropylene film is intended to be used as packaging material, with possible surprint and lamination.


Technical data


Requirements

Value
Nominal thickness, [mm] Admissible deviation +/- 5% 17 20

25

30

35

40
Density [g/cm3]

0,91

Tearing strength, [N/mm2]  
  - longwise, not less than  
  - crosswise, not less than


130
220


130
220


130
220


140
240


140
240


140
240
Weldable joint strength, not less than [N/15 mm] 2,0 2,0 2,0 2,0 2,0 2,0
Ultimate elongation,[%]   
  - longwise, not less than
  - crosswise, not less than


220
100


220
100


220
100


200
80


200
80


200
80
Thermal shrinkage,[%]
  - longwise, not less than
  - crosswise, not less than
4,5
2,5
4,5
2,5


4,5
2,5
4,0
2,0
4,0
2,0
4,0
2,0
Friction factor, (film/metal) not more than

0,35
Opacity, not more than[%] 2,6 2,6

2,8

 3,0 3,2 3,4
Gloss, not less than[%]

85
Activation level, [mN/m]

38
Substance,[ g/m2] 15,5 18,2

22,7

27,3

31,8

36,4
Packaging effectiveness [m2/kg] 64,6 54,9

44

36,5

31,4

27,5