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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.:

US 9937681 B1

PDFFull Text
Date of Patent:
Apr. 10, 2018

Filed:

Apr. 27, 2011

Method for improving the heat sealability of packaging material and method for manufacturing heat-sealed container or package

Applicants:

Tapani Penttinen, Huutjarvi, FI;

Kimmo Nevalainen, Kotka, FI;

Jurkka Kuusipalo, Tampere, FI;

Tapio Koskinen, Tampere, FI;

Sami Kotkamo, Tampere, FI;

Inventors:

Tapani Penttinen, Huutjarvi, FI;

Kimmo Nevalainen, Kotka, FI;

Jurkka Kuusipalo, Tampere, FI;

Tapio Koskinen, Tampere, FI;

Sami Kotkamo, Tampere, FI;

Assignee:

STORA ENSO OYJ, Helsinki, FI;

Attorney:

Young & Thompson

Primary Examiner:

Philip C Tucker

Assistant Examiner:

Brian R Slawski

Int. Cl.
CPC ...
A61F 13/15 (2006.01); B05D 3/00 (2006.01); B29C 53/00 (2006.01); B29C 47/00 (2006.01); B29C 65/00 (2006.01); B29C 47/06 (2006.01); B31B 1/62 (2006.01); B31C 11/04 (2006.01); B31C 7/00 (2006.01); B32B 37/00 (2006.01); B32B 27/00 (2006.01); B65C 9/25 (2006.01); C08J 5/00 (2006.01); C08J 7/18 (2006.01); G21H 5/00 (2006.01); B31B 1/74 (2006.01); B29C 65/02 (2006.01); B29C 71/04 (2006.01); B32B 9/02 (2006.01); B32B 27/12 (2006.01); C08J 5/12 (2006.01); C08J 7/12 (2006.01); C09J 5/06 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/10 (2006.01); B32B 27/36 (2006.01); B31B 50/74 (2017.01); B29C 65/10 (2006.01); B29C 65/18 (2006.01); B29C 35/08 (2006.01); B29K 67/00 (2006.01);
U.S. Cl.
CPC ...
B31B 1/74 (2013.01); B29C 65/02 (2013.01); B29C 66/028 (2013.01); B29C 66/71 (2013.01); B29C 66/723 (2013.01); B29C 66/919 (2013.01); B29C 66/9141 (2013.01); B29C 66/9192 (2013.01); B29C 66/91423 (2013.01); B29C 71/04 (2013.01); B31B 50/74 (2017.08); B32B 7/12 (2013.01); B32B 9/02 (2013.01); B32B 27/08 (2013.01); B32B 27/10 (2013.01); B32B 27/12 (2013.01); B32B 27/36 (2013.01); C08J 5/121 (2013.01); C08J 7/123 (2013.01); C09J 5/06 (2013.01); B29C 65/10 (2013.01); B29C 65/18 (2013.01); B29C 66/4322 (2013.01); B29C 66/72328 (2013.01); B29C 2035/0827 (2013.01); B29K 2067/00 (2013.01); B29K 2067/046 (2013.01); B32B 2255/12 (2013.01); B32B 2255/26 (2013.01); B32B 2274/00 (2013.01); B32B 2307/31 (2013.01); B32B 2439/40 (2013.01); B32B 2553/00 (2013.01); C08J 2367/04 (2013.01); C09J 2205/31 (2013.01); C09J 2467/00 (2013.01);
Abstract

A method for improving the heat sealability of a packaging material and a method for manufacturing a heat-sealed container or package are described. The material can be polymer-coated packaging paper or cardboard, or a polymeric packaging film. The material includes a polymer layer that contains polyester, particularly polylactide, the heat sealability of which is improved by ultraviolet radiation. Polylactide is useful as such or when blended, for example, with other biodegradable polyester. The containers and packages thus manufactured include disposable drinking cups and cardboard carton and box packages.

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