Nonoriented stiff packaging film with superior tear properties

Details Nonoriented stiff packaging film with superior tear properties Nonoriented stiff packaging film with superior tear properties

2006-08-08

2006-08-08

Nutter, Nathan M. (Department: 1711)

Stock material or miscellaneous articles

Composite

Of addition polymer from unsaturated monomers

C428S515000, C525S191000, C525S240000, C524S502000, C524S515000

Reexamination Certificate

active

07087314

ABSTRACT:
A nonoriented film containing highly crystalline polypropylene, standard polypropylene and nucleating agents. The film has physical properties that are desirable for applications such as food wrappers and tampon overwrap, including good tearability, stiffness and memory. In addition, the nonoriented film is cost effective because the film achieves these physical properties without the step of stretching or orienting the film, as required for conventional polypropylene films used in food wrappers and tampon overwrap.

REFERENCES:
patent: 6306518 (2001-10-01), Shah et al.
patent: 6825276 (2004-11-01), Forte et al.

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