The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 2016
Filed:
Apr. 15, 2014
Applicant:
Miller Weldmaster Corporation, Navarre, OH (US);
Inventor:
Brian D. Henry, North Lawrence, OH (US);
Assignee:
Miller Weldmaster Corporation, Navarre, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B31B 21/00 (2006.01); B31B 1/00 (2006.01); B29C 65/00 (2006.01);
U.S. Cl.
CPC ...
B31B 21/00 (2013.01); B31B 1/00 (2013.01); B29C 66/4312 (2013.01); B31B 2219/6038 (2013.01); B31B 2219/6046 (2013.01); B31B 2219/6053 (2013.01); B31B 2221/50 (2013.01); B31B 2237/00 (2013.01);
Abstract
A thermal welder is configured to weld a back seam of a bag formed of thermoplastic sheet material, which may be a polywoven material. The welder typically includes a weld heater and a compression mechanism downstream of the weld heater to compress the sheet material to form the back seam. The welder also includes a weld breaker downstream of the compression mechanism to break apart incidental welds which are formed adjacent the back seam.