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Pattern coated adhesive article

A product, adhesive technology, applied in the direction of adhesive dressings, layered products, pharmaceutical devices, etc., can solve the problems of low water vapor transmission rate, uncomfortable bandage application, unfavorable rubber-based adhesives, etc.

Inactive Publication Date: 2002-10-16
AVERY DENNISON CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rubber-based adhesives can be disadvantageous because they are inherently poorly breathable (i.e., low moisture vapor transmission rate (MVTR))
Therefore, this unfavorable property makes rubber-based adhesives generally unsuitable for bandage applications in contact with the skin

Method used

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  • Pattern coated adhesive article
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A-1C

[0048]HM3210 hot melt rubber based pressure sensitive adhesive available from Ato Findley was applied to the siliconized release liner by offset flexography in a "honeycomb" pattern. The pattern was formed so that the adhesive covered 85-90% of the surface area of ​​the release liner, leaving 10-15% of the surface area free of adhesive. The coat weight of the adhesive was 40 grams per square meter (gsm). The adhesive coated liner was then pressed to a 3.3 mil apertured polyolefin film, X6989 available from Tredegar Film Products. Rolling of the laminate is then converted via a die to a cutting process where the absorbent pad and finger tab sheet are applied and the material is cut to form the adhesive bandage strip.

Embodiment 2

[0050] Apply hot melt rubber to the release liner by spraying the adhesive onto the release liner in a pattern such that the adhesive covers 85-90% of the surface of the release liner at 40gsm PSA, except that an adhesive strip was prepared substantially as in Example 1. The adhesive coated liner was then pressed to the perforated polyolefin film.

Embodiment 3

[0052] Apply hot melt to the release liner by screen printing the adhesive onto the release liner in such a way that the adhesive covers 85-90% of the surface of the release liner at a 40 gsm coating Rubber-based PSA, except that adhesive strips were prepared substantially as in Example 1. The adhesive coated liner was then pressed to the perforated polyolefin film.

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Abstract

The present invention relates to an adhesive article (30) comprising at least one backing layer (31) having a first and a second surface and a pressure-sensitive adhesive adhesive patterned on the first surface of the backing layer (31). An adhesive layer (32), wherein the pattern of the adhesive layer (32) has an adhesive-free area (33) of less than about 25%, wherein the adhesive article (30) has an water vapor transmission rate. The present invention also relates to a method of forming an adhesive article (30) comprising (a) providing a release liner (34), (b) patternwise applying a pressure sensitive adhesive (32), wherein no adhesive The area (33) is less than 25% in area, (c) applying a backing layer (31) to the pressure sensitive adhesive (32).

Description

[0001] Referenced related applications [0002] This application claims priority to Provisional Patent Application Serial No. 60 / 154,583, filed September 17, 1999, and entitled "Patterned Adhesive Article." technical field [0003] The present invention relates to a very breathable pressure sensitive adhesive article such as a bandage or tape. More particularly, the present invention relates to a pressure sensitive adhesive article having both good adhesion and high water vapor transmission rate characteristics. In a specific embodiment, the adhesive article has a backing layer and a rubber-based pressure sensitive adhesive. Background of the invention [0004] Adhesive articles, such as bandages and tapes, are well known in the art and are commonly used in emergency wound dressings and other medical applications. Conventional adhesive bandages contain a central pad area (pad base) surrounded by an adhesive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/02B32B5/26
CPCA61F13/023B32B5/26B32B37/1292Y10T428/14Y10T428/24322Y10T428/2486Y10T428/1471Y10T428/1462Y10T428/1495Y10T428/1486Y10T428/24331B32B7/14B32B2307/724B32B2535/00B32B3/266B32B37/0076
Inventor T·L·卡特K·维塞O·阿提亚B·尤里克K·L·斯皮里泽维斯基R·L·J·孙
Owner AVERY DENNISON CORP
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