Method and apparatus for measuring closure forces and variances

Details Method and apparatus for measuring closure forces and variances Method and apparatus for measuring closure forces and variances

1991-06-28

1992-10-13

Williams, Hezron E.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

738659, G01N 308

Patent

active

051540860

ABSTRACT:
An apparatus and method for measuring the tactility of a zipper of a reclosable thermoplastic zippered bag of the type described in commonly-assigned U.S. Pat. No. 5,070,584, including an opposed pair of mechanical fingers defining a gap therebetween through which the zipper is made to pass, means associated with the opposed pair of mechanical fingers for continuously measuring the resistance of the male and female profiles to being interlocked by such fingers as the zipper passes through the gap defined between such fingers, and means for recording, graphing, displaying and/or analyzing these measurements.

REFERENCES:
patent: 2493782 (1945-10-01), Schwarz
patent: 3199342 (1965-08-01), Snair et al.
patent: 3620071 (1970-06-01), Kelley et al.
patent: 4102180 (1978-07-01), Devarakonda
patent: 5033308 (1991-07-01), LeCompagnon et al.

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