Heat-shrinkable film having high shrinkage upon brief exposure t

Details Heat-shrinkable film having high shrinkage upon brief exposure t Heat-shrinkable film having high shrinkage upon brief exposure t

1989-11-17

1991-08-27

Lieberman, Allan M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

264 101, 525 60, C08L 2904, C08L 5302

Patent

active

050433830

ABSTRACT:
Disposable diapers can be manufactured at high production speeds by using for the waistband a heat-shrinkable plastic film that is dimensionally stable at ordinary room temperature and shrinks in one direction at least 25% within 5 seconds at 54.degree. C. Such a heat-shrinkable plastic film can be made by uniaxially cold-stretching a thin extrudate of a blend of an EVA copolymer and an (A-B) block copolymer of polystyrene and polyisoprene.

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