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:
Jul. 19, 2011
Filed:
Jul. 12, 2000
Clark Woody, Pinconning, MI (US);
P. Gregory Velez, Saginaw, MI (US);
Jeffrey S. Hoffman, Linwood, MI (US);
Stephen P. Gangler, Unionville, MI (US);
Clark Woody, Pinconning, MI (US);
P. Gregory Velez, Saginaw, MI (US);
Jeffrey S. Hoffman, Linwood, MI (US);
Stephen P. Gangler, Unionville, MI (US);
S.C. Johnson & Son, Inc., Racine, WI (US);
Abstract
A method of severing and sealing a film formed of a thermoplastic material includes heating a cutting edge implement to a temperature sufficient to melt but not to burn the thermoplastic material, feeding a plurality of layers of the film between the cutting edge implement and an opposing surface, and moving the cutting edge implement, which is preferably a supported hot wire, and the opposing surface relative to one another to pinch the plurality of layers of film therebetween. Thereafter, any relative lateral movement between the cutting edge implement, the film, and the opposing surface is suspended, while the cutting edge implement and the opposing surface are relatively biased together with the plurality of layers of film pinched therebetween, until the cutting edge implement cuts through the plurality of layers of film, contacts the opposing surface, and seals the plurality of layers of film together.