Hot knife welds in thermoplastic strap

Details Hot knife welds in thermoplastic strap Hot knife welds in thermoplastic strap

1977-05-04

1979-06-19

Epstein, Henry F.

Stock material or miscellaneous articles

Sheets or webs edge spliced or joined

2338, 156292, 156306, 428188, B32B 326

Patent

active

041587111

ABSTRACT:
Ends of thermoplastic polymeric strap are joined together using a hot sealing blade of substantially rectangular transverse cross section and having corners with an effective radius in the range of about 0.005 inches to 0.03 inches. Joints or welds produced by this sealing blade have a novel configuration in which a fused interfacial region includes an annular mass defining at least one elongated cavity. At least two such cavities are present within the region and together span the width of the strap. Such welds are stronger than prior art welds, and can consistently be produced having a joint strength of at least about 85 percent of the strap strength.

REFERENCES:
patent: 1650051 (1927-11-01), Smith
patent: 1830791 (1931-11-01), Guinzburg
patent: 3316687 (1967-05-01), Bartlett, Jr.
patent: 3368323 (1968-02-01), Wood
patent: 3490973 (1970-01-01), Graff et al.
patent: 3748214 (1973-07-01), Withers
patent: 3783086 (1974-01-01), Plummer
patent: 4069359 (1978-01-01), DeMarse

Affiliated with

Also associated with

Rating

Hot knife welds in thermoplastic strap does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hot knife welds in thermoplastic strap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot knife welds in thermoplastic strap will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-56570