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. 11, 2003
Filed:
Feb. 01, 2001
ENSO Oyj, , FI;
Abstract
The invention relates to compostable polymer coated paper or paperboard ( ), a method for making the same and products obtained therefrom. According to the invention, a compostable biodegradable coating ( ) of paper or paperboard ( ) includes an outer layer ( ) containing polylactide the weight of which is at the most about 20 g/m , and of an adhesive layer ( ) that binds the outer layer to the paper or paperboard ( ) and is of biodegradable polymer material that is coextruded with the polylactide. Suitable materials for the adhesive layer ( ) are biodegradable polyesters. The production is by coextrusion of the polylactide layer ( ) and the adhesive layer ( ) on either one side of the paper or paperboard or on both sides thereof. Products obtained include in particular packages for food stuffs and disposable dishes such as containers for frozen foods, disposable drinking cups, heat-sealed carton packages and packaging wraps.