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:
May. 25, 2010
Filed:
Feb. 08, 2005
Keunsuk P. Chang, North Kingstown, RI (US);
Enrico Ballico, Marino, IT;
Carmelo Dicostanzo, Lanciano, IT;
Keunsuk P. Chang, North Kingstown, RI (US);
Enrico Ballico, Marino, IT;
Carmelo DiCostanzo, Lanciano, IT;
Toray Plastics (America), Inc., N. Kingstown, RI (US);
Bimo Italia, S.p.A., Atessa (Chieti), IT;
Abstract
A method for manufacturing a surface-treated laminated film is provided. The produced film should include at least a surface treated polyolefin-containing resin layer with a flame or corona treated surface and a heat sealable resin layer having a storage shear modulus of 400,000 Pa or less at 100 rad/s at 121° C., 100,000 Pa or less at 10 rad/s at 121° C., and 5000 Pa or less at 1 rad/s at 121° C. The method may involve coextruding a laminated film that includes at least a polyolefin-containing resin layer and a heat sealable resin layer. The laminated film may be simultaneously stretched in machine and traverse direction, and subsequently surface treated to produce a surface-treated laminated film.