EP0251672A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure sensitive adhesive products
Assignee: Wiggins Teape Group Ltd
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Filing: 1987-06-24
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Granted: —
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Expires: 2007-06-24
Abstract
Abstract Peelable sensitive adhesive coated substrates, (in particular labels) have a primer coat on the substrate comprising a contact cement and a peelable pressure sensitive adhesive coating containing a contact cement. The use of a contact cement as a primer and in the adhesive enhances cohesion of the adhesive coating and its adhesion to the substrate. This improves peelability particulartly by allowing separate optimisation of the adhesive as a peelable pressure sensitive adhesive.
Inventors
- 👤 David John Bebbington
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 08:31
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/50
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
62 words
A peelable pressure sensitive adhesive coated substrate comprising a sheet substrate having on one surface thereof a primer coating firmly bonded to the sheet substrate, which includes a contact cement, and, overlying the primer coating, a coating of a peelable pressure sensitive adhesive including a contact cement, the contact cement(s) serving to firmly bond the primer coating and the adhesive coating together.
Claim 2
Dependent Claim
62 words
A peelable pressure sensitive adhesive coated substrate comprising a sheet substrate having on one surface thereof a primer coating firmly bonded to the sheet substrate, which includes a contact cement, and, overlying the primer coating, a coating of a peelable pressure sensitive adhesive including a contact cement, the contact cement(s) serving to firmly bond the primer coating and the adhesive coating together.
Claim 3
Dependent Claim
45 words
An adhesive coated substrate as claimed in claim 1 wherein the contact cement in the primer coating and the contact cement in the peelable pressure sensitive adhesive coating are each, independently, a natural rubber, a synthetic cis-polyisoprene, a polychloroprene or an acrylic polymer contact cement.
Claim 4
Dependent Claim
35 words
An adhesive coated substrate as claimed in either claim 1 or claim 2 wherein the contact cement in the peelable pressure sensitive adhesive coating is the same as the contact cement in the primer coating.
Claim 5
Dependent Claim
28 words
An adhesive coated substrate as claimed in any one of claims 1 to 3 wherein the primer coating comprises a contact cement and a film forming diluent polymer.
Claim 6
Dependent Claim
20 words
An adhesive coated substrate as claimed in claim 4 wherein the film forming diluent polymer is a styrene butadiene rubber.
Claim 7
Dependent Claim
22 words
An adhesive coated substrate as claimed in claim 5 wherein the styrene butadiene rubber contains at least 50% of butadiene by weight.
Claim 8
Dependent Claim
23 words
An adhesive coated substrate as claimed in claim 6 wherein the styrene butadiene rubber contains from 50 to 80% of butadiene by weight.
Claim 9
Dependent Claim
25 words
An adhesive coated substrate as claimed in any one of claims 1 to 7 wherein the primer coating includes an antioxidant for the contact cement.
Claim 10
Dependent Claim
28 words
An adhesive coated substrate as claimed in any one of claims 1 to 8 wherein the primer coating has a coatweight of from 5 to 10 g m⁻².
Claim 11
Dependent Claim
34 words
An adhesive coated substrate as claimed in any one of claims 1 to 9 wherein the peelable pressure sensitive adhesive is based on one or more acrylic polymers, styrene butadiene rubbers and/or isoprene polymers.
Claim 12
Dependent Claim
37 words
An adhesive coated substrate as claimed in any one of claims 1 to 10 wherein the proportion of contact cement in the peelable pressure sensitive adhesive is from 10 to 20% by weight of the solid adhesive.
Claim 13
Dependent Claim
31 words
An adhesive coated substrate as claimed in any one of claims 1 to 11 wherein the peelable pressure sensitive adhesive coating has a coatweight of from 10 to 25 g m⁻².
Claim 14
Dependent Claim
20 words
An adhesive coated substrate as claimed in any one of claims 1 to 12 wherein the substrate is of paper.
Claim 15
Dependent Claim
20 words
An adhesive coated substrate as claimed in any one of claims 1 to 13 in the form of a label.
Claim 16
Dependent Claim
13 words
A label as claimed in claim 14 peelably adhered to a target substrate.
Claim 17
Dependent Claim
90 words
A peelable pressure sensitive adhesive coated label comprising a backing substrate having a release surface and releasably laminated thereto the pressure sensitive adhesive coated side of a peelable pressure sensitive adhesive label which comprises a flexible sheet label substrate and on one side thereof a primer coating fimly bonded to the sheet substrate, which includes a contact cement and overlying the primer coating a coating of a peelable pressure sensitive adhesive including a contact cement, the contact cement serving to firmly bond the primer coating and the adhesive coating together.
Claim 18
Dependent Claim
90 words
A peelable pressure sensitive adhesive coated label comprising a backing substrate having a release surface and releasably laminated thereto the pressure sensitive adhesive coated side of a peelable pressure sensitive adhesive label which comprises a flexible sheet label substrate and on one side thereof a primer coating fimly bonded to the sheet substrate, which includes a contact cement and overlying the primer coating a coating of a peelable pressure sensitive adhesive including a contact cement, the contact cement serving to firmly bond the primer coating and the adhesive coating together.
Claim 19
Independent Claim
62 words
A method of making a peelable pressure sensitive adhesive coated sheet product which method comprises coating a substrate with a first aqueous coating mix including dispersed therein a contact cement, removing water from the coating so as to provide a primer coat on the substrate and subsequently coating the primed substrate with a peelable pressure sensitive adhesive composition including a contact cement.
Claim 20
Independent Claim
62 words
A method of making a peelable pressure sensitive adhesive coated sheet product which method comprises coating a substrate with a first aqueous coating mix including dispersed therein a contact cement, removing water from the coating so as to provide a primer coat on the substrate and subsequently coating the primed substrate with a peelable pressure sensitive adhesive composition including a contact cement.
Claim 21
Independent Claim
130 words
A method of making a peelable pressure sensitive adhesive coated label laminated to the release surface of a backing substrate which comprises applying a first aqueous coating mix having dispersed therein a contact cement material to one side of the label substrate, removing water from the coating so as to form a primer coating on the label substrate, coating the release surface of the backing substrate with an aqueous coating mix comprising a dispersion of a peelable pressure sensitive adhesive including therein a contact cement, removing water from the coating on the backing substrate so as to form a coating of a peelable pressure sensitive adhesive on the backing substrate and subsequently laminating the primer coating face of the label substrate to the adhesive coated face of the backing substrate.
Claim 22
Independent Claim
130 words
A method of making a peelable pressure sensitive adhesive coated label laminated to the release surface of a backing substrate which comprises applying a first aqueous coating mix having dispersed therein a contact cement material to one side of the label substrate, removing water from the coating so as to form a primer coating on the label substrate, coating the release surface of the backing substrate with an aqueous coating mix comprising a dispersion of a peelable pressure sensitive adhesive including therein a contact cement, removing water from the coating on the backing substrate so as to form a coating of a peelable pressure sensitive adhesive on the backing substrate and subsequently laminating the primer coating face of the label substrate to the adhesive coated face of the backing substrate.
References Cited (Backward Citations)
No citation records indexed.
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