Stretch release article

Patent metadata

Field	Value
Publication number	US-9572722-B2
Application number	US-201414518071-A
Country	US
Kind code	B2
Filing date	Oct 20, 2014
Priority date	Dec 28, 2012
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

Provided are adhesive articles and assemblies that include a flat and at least partially elastic backing along with a patterned adhesive coating on each side of the backing. When viewed from directions perpendicular to the backing, the adhesive on one side of the backing does not substantially overlap the adhesive on the opposing side of the backing. As a result, it is possible to use a stretch removable adhesive article that uses, for example, an aggressive adhesive to provide a reliable bond but still remove cleanly and easily from delicate substrates that would otherwise be damaged or destroyed if bonded with conventional adhesive constructions.

First claim

What is claimed is:

1. A method of making a feminine hygiene pad comprising:
providing a flat and substantially elastic backing having first and second major surfaces;
adhesively coupling a release liner to the first major surface using a first adhesive coated according to a first two-dimensional pattern; and
adhesively coupling an absorbent article to the second major surface using a second adhesive coated according to a second two-dimensional adhesive pattern, wherein the first and second patterns do not substantially overlap with each other when each is projected onto a common reference plane coplanar with the backing, whereby areas of the backing coated by the first adhesive on the first major surface are substantially uncoated by the second adhesive on its opposing second major surface and areas of the backing coated by the second adhesive on the second major surface are substantially uncoated by the first adhesive on its opposing first major surface.

2. The method of claim 1 , wherein adhesively coupling the release liner to the first major surface comprises applying the first adhesive to the first major surface and then laminating the first major surface to the release liner.

3. The method of claim 1 , wherein adhesively coupling the absorbent article to the second major surface comprises applying the second adhesive to the second major surface and then laminating the second major surface to the absorbent article.

4. A method of detaching from a substrate a generally flat adhesive article having a substantially elastic backing, a first adhesive extending across a top surface of the backing according to a two-dimensional first pattern, a second adhesive extending across a bottom surface of the backing according to a two-dimensional second pattern, wherein the first and second patterns substantially do not overlap each other when viewed from above, the method comprising:
stretching the backing and first adhesive along a direction substantially parallel to the backing along an area of the adhesive article that is devoid of the second adhesive to remove the first adhesive from the substrate; and
stretching the backing and second adhesive along a direction substantially parallel to the backing along an area of the adhesive article that is devoid of the first adhesive, wherein both the first and second adhesives remain bonded to the backing.

5. The method of claim 4 , wherein stretching the backing comprises peeling the backing at a peel angle of at least 90 degrees relative to the substrate.

6. The method of claim 5 , wherein stretching the backing comprises peeling the backing at a peel angle of at least 120 degrees relative to the substrate.

7. The method of claim 4 , wherein the substrate is a first substrate and the adhesive article further comprises a second substrate permanently bonded to the backing by the second adhesive.

8. The method of claim 7 , wherein stretching the backing comprises peeling the second substrate away from the first substrate.

Assignees

• 3M Innovative Properties Co

Inventors

• Wood Leigh E

Classifications

• C09J2409/00

  Presence of diene rubber · CPC title

• Y10T428/1476

  Release layer · CPC title

• Y10T428/24132

  including grain, strips, or filamentary elements in different layers or components parallel · CPC title

• C09J2201/128

  Chemistry & Metallurgy · mapped topic

• A61F13/15

  Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators · CPC title