ADHESIVE SECURITY TAPE THAT ALLOWS TO DETECT UNAUTHORIZED OPENING OF A PACKAGING

Title:

ADHESIVE SECURITY TAPE THAT ALLOWS TO DETECT UNAUTHORIZED OPENING OF A PACKAGING

Document Type and Number:

WIPO Patent Application WO2001098424

Kind Code:

A3

Abstract:

The invention relates to a multilayer adhesive tape, comprising a substrate on the basis of a stretched thermoplastic film, the upper face of which is optionally coated with a separating coat. The lower face of said tape is provided with the following layers: a) a primer layer that is not applied to the entire surface, said primer layer being excellently anchored on the thermoplastic film, b) a first separating layer is applied to the entire surface of the primer layer and the free thermoplastic film surface, said separating layer being anchored more strongly on the primer layer than on the thermoplastic film, c) at least one second separating layer applied to the entire surface of the first separating layer, said second separating layer or optionally further separating layers being more strongly anchored on the preceding separating layer than the first separating layer on the thermoplastic film, d) an adhesive compound is applied to the entire surface of the second or optionally last separating layer, said adhesive compound being more strongly anchored on the second or optionally last separating layer than the first separating layer on the thermoplastic film and the adhesive compound adhering more strongly on the primer base than the first separating layer on the thermoplastic film.

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Inventors:

OTTEN ULRICH (DE)
WENNINGER DIETER (DE)

Application Number:

PCT/EP2001/006683

Publication Date:

April 04, 2002

Filing Date:

June 13, 2001

Export Citation:

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Assignee:

TESA AG (DE)
OTTEN ULRICH (DE)
WENNINGER DIETER (DE)

International Classes:

B65D33/34; B65D55/02; C09D5/00; C09J7/29; C09J133/06; C09J201/00; G09F3/02; (IPC1-7): C09J7/02; B65D33/34; B65D55/02; G09F3/02

Domestic Patent References:

WO1999055791A1	1999-11-04
WO1997044769A1	1997-11-27

Foreign References:

EP1113059A2	2001-07-04
EP0651365A1	1995-05-03
US5658411A	1997-08-19

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