Blend of polybutylene and ionomer forming easy-open heatseal

Details Blend of polybutylene and ionomer forming easy-open heatseal Blend of polybutylene and ionomer forming easy-open heatseal

1991-06-12

1996-08-20

Davis, Jenna

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

428355, 525196, 525221, C09J 702

Patent

active

055477526

ABSTRACT:
When a flexible packaging material having a heatseal layer comprising a blend of about 15 to 50 percent polybutylene and about 50 to 85 percent of an ionomer is formed into a package by heatsealing the heatseal layer to itself, the strenth of the heatseal is between about 0.5 and 2.0 pounds per inch, with delamination occurring solely between the heatseal layers when the package is opened.

REFERENCES:
patent: 3365540 (1968-01-01), Foster
patent: 4082877 (1978-04-01), Shandle
patent: 4189519 (1980-02-01), Ticknor
patent: 4584348 (1986-04-01), Nagano
patent: 4680340 (1987-07-01), Oreglia
patent: 4766174 (1988-08-01), Statz
patent: 4870134 (1989-09-01), Hwo

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