Cohesive coating for snack food packaging

Details Cohesive coating for snack food packaging Cohesive coating for snack food packaging

2007-06-26

2007-06-26

Zirker, Daniel (Department: 1771)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

C428S343000, C428S3550AC, C428S492000, C428S522000, C428S349000, C427S207100

Reexamination Certificate

active

10780524

ABSTRACT:
A water based, cold seal, cohesive coating for bonding one or more substrates together to form a flexible package to contain an article, especially useful for snack food packaging. The cohesive coating includes about 25% to about 90% by weight of a natural rubber latex emulsion, about 10% to about 75% by weight of a non-self-crosslinking acrylic emulsion, about 0.01% to about 10% by weight water, and one or more ingredient selected from an anti-foam agent, ammonia, a surfactant, an anti-blocking agent, an inert filler, and a conditioning agent, so that in combination the components total 100% by weight of the composition. The use of a non-self-crosslinking acrylic emulsion provides an improved cold seal cohesive that may be employed with current high temperature converting systems and provides improved adhesion to substrates, enhanced cohesion to itself, reduced blocking and avoids seal deadening.

REFERENCES:
patent: 4804573 (1989-02-01), McCarthy et al.
patent: 6099682 (2000-08-01), Krampe et al.
patent: 6290801 (2001-09-01), Krampe et al.
patent: 6436499 (2002-08-01), Krampe et al.
patent: 6613831 (2003-09-01), Bentley et al.
patent: 2003/0113519 (2003-06-01), Wasserman et al.

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