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:
Nov. 26, 2013
Filed:
Jan. 15, 2009
Tapani Penttinen, Huutjärvi, FI;
Kimmo Nevalainen, Kotka, FI;
Erkki Laiho, Porvoo, FI;
Markku Sainio, Porvoo, FI;
Jurkka Kuusipalo, Tampere, FI;
Antti Savolainen, Kangasala, FI;
Esa Koreasalo, Valkeakoski, FI;
Isto Heiskanen, Imatra, FI;
Tommi Lehikoinen, Tampere, FI;
Tapani Penttinen, Huutjärvi, FI;
Kimmo Nevalainen, Kotka, FI;
Erkki Laiho, Porvoo, FI;
Markku Sainio, Porvoo, FI;
Jurkka Kuusipalo, Tampere, FI;
Antti Savolainen, Kangasala, FI;
Esa Koreasalo, Valkeakoski, FI;
Isto Heiskanen, Imatra, FI;
Tommi Lehikoinen, Tampere, FI;
Stora Enso Oyj, Helsinki, FI;
Abstract
The invention relates to a polymer-coated Polymer-coated heat-sealable packaging material, heat-sterilized package formed from the material, and use of the packaging material. The material comprises a fiber base(e.g., packaging board made of bleached pulp) with polymer heat-seal layerslocated on both sides thereof. The package comprises, outside the fiber base, first polymer coating layer, which contains white pigment for covering the fiber base from sight, and second coating layer, which contains light-absorbing pigment. A coating layer pigmented grey inside the fiber base may provide a light shield for the packaged product. Absorbent black pigment may be located outside the fiber base underneath the white layer to stabilize the brightness of the material. A heat-sterilized package is made by providing the packaging material, forming a package containing, e.g., food, and heat-sterilizing the package in an autoclave. Yellowing of the fiber-based material is avoided by means of a white pigment.