Introduction of modifiers improves deadfold characteristics and twist retention of BOPP films.
The addition of additives to a BOPP film brings the following benefits:
Up to 75% twist wrap retention
A printable surface
Excellent optical properties such as high gloss and low haze
% modifiers in the Core
% Twist retention
0
25
40
65
Recommended product design:
Layer
Polymer
Thick (µ)
Treatment
Comments
L1
EP copolymer or terpolymer + antiblock
0.6 - 1
Flame or corona
If metallizable, do not add antilock
L2
PP + 30 to 40 % modifiers
16 - 17
Anti stat in the core is optional
L3
Lower SIT copolymer or terpolymer + antiblock + slip agent
1
No treatment
* : No Treatment
Commercial trials have confirmed that BOPP films containing modifiers give excellent candy twist wrap performance due to the combination of improved twist retention and higher stiffness.
Recommended product design:
