Adhesive articles with improved air egress

• US 8,252,403 B2
• Filed: 10/21/2011
• Issued: 08/28/2012
• Est. Priority Date: 04/24/2000
• Status: Expired due to Term

• Current Assignee: Avery Dennison Corporation
• Original Assignee: Avery Dennison Corporation
• Inventors: Hannington, Michael
• Primary Examiner(s): Chang, Victor
• Application Number:
  US13/278,486
• Publication Number:
  US 20120040152A1
• Time in Patent Office: 312 Days
• Field of Search: 428/40.1, 428/41.7, 428/41.8
• US Class Current: 428/40.1
• CPC Class Codes: C09J 2301/204 the adhesive coating being discontinuous
• CPC Class Codes: C09J 2301/206 the adhesive layer comprising non-adhesive protrusions
• CPC Class Codes: C09J 7/10 without carriers
• CPC Class Codes: C09J 7/35 Heat-activated
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2813 Heat or solvent activated or sealable
• CPC Class Codes: Y10T 428/2839 with release or antistick coating
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2902 Channel shape

Abstract

This invention relates to an adhesive article which provides air egress. Air egress is provided by supplying a route, such as areas of no initial adhesion for the air to flow out from under the construction. The invention relates to an adhesive article comprising a facestock having a front surface and a back surface, a continuous layer of adhesive having an upper surface and a lower surface wherein the upper surface of the adhesive layer is adhered to the back surface of the facestock, and a plurality of spaced-apart non-adhesive material which is in contact with the lower surface of the adhesive layer. These articles have usefulness as industrial graphics images, as well as decorative coverings, etc. The articles provide air egress and optionally repositionability and slideability.

Claims

1. An adhesive article comprising:

a facestock having a front surface and a back surface;

a continuous layer of adhesive having an upper surface and a lower surface and end edges, wherein the upper surface of the adhesive is adhered to the back surface of the facestock; and

a pattern of non-adhesive material forms embedded into the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface, wherein the bottom surfaces of the non-adhesive material forms are even with the lower surface of the adhesive layer; and

wherein the pattern of non-adhesive material forms is applied by vacuum metallization or sputtering and pressed into the adhesive layer; and

wherein the pattern of the non-adhesive material forms provides a path for air egress.

2. The adhesive article of claim 1 wherein the non-adhesive material forms have an average thickness of about 30 to about 3000 nanometers.

3. The adhesive article of claim 1 wherein the pattern of non-adhesive material forms comprises a plurality of dots, lines or combinations thereof.

4. The adhesive article of claim 3 wherein the lines of non-adhesive material have an average width of from about 12.mu. to about 250.mu. and an average thickness of from about 30 nanometers to about 3000 nanometers.

5. The adhesive article of claim 3 wherein a plurality of lines forms a grid pattern.

6. The adhesive article of claim 1 further comprising a release liner having a release surface, wherein said release surface is adhered to the lower surface of the adhesive layer.