US 9,534,152 B2 · Labels

Abstract

There is described a label comprising a self supporting sheet of a biopolymer, preferably cellulose (e.g. regenerated cellulose, cellulose acetate and/or PLA) said sheet being substantially transparent to visible light when uncoated characterized in that the sheet comprises: (a) a first coating on at least one surface thereof to aid printability thereon; (b) a second coating comprising an adhesive dispersible in an aqueous medium; and (c) optionally a third coating to modify water permeability through the sheet. The labels are to be applied to articles such as glass containers. Preferred labels are wet glue cellulose labels for example where the first coating also comprises a copolymer of vinyl chloride and vinyl acetate to aid water permeability and hence rapid drying of the label on an article.

Claims18

Dependent claims

A method for preparing a label, the method comprising the steps of:

applying to a surface of a biopolymer film a non-transparent metallised coating;
covering the metallised coating with a composition with an adhesive dispersed therein;
corona discharge treating the opposite surface of the biopolymer film to improve its printability and drying the film.

Dependencies are inferred from the claim text.

Facts

Application

12/820,801Filed 22 Jun 2010 · continuation

Priority

GB 0106410.415 Mar 2001

Published

US 2011/0020578 A127 Jan 2011

Granted

3 Jan 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification34 codes

C09J 7/25
Plastics; Metallised plastics: based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated…
C09J 7/29
Characterised by their carriers: laminated material
G09F 3/10
Fastening or securing by means not forming part of the material of the label itself: by an adhesive layer
C09J 2203/334
Applications of adhesives in processes or use of adhesives in the form of films or foils: as a label

Family

PCT/EP02/02726Parent of this division · filed 13 Mar 2002

Application12/222,498Parent of this continuation · filed 11 Aug 2008

US 7,687,125 B2Parent of this division · filed 30 Mar 2010

US 2011/0020578 A1Pre-grant publication · published 27 Jan 2011

Application10/471,694Parent of this division

Application12/222,498Parent of this division

US 2004/0197512 A1Published application

US 2008/0305326 A1Published application

US 8,173,234 B2Related patent

US 9,534,152 B2This patent

From the US filing history. Foreign family members aren’t listed.

Labels

Life of this patent

Labels

Life of this patent

Abstract

Claims18