Patch Having Easily Detachable Release Sheet

• US 20090281471A1
• Filed: 08/17/2006
• Published: 11/12/2009
• Est. Priority Date: 08/17/2005
• Status: Active Grant

• Current Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Original Assignee: Hisamitsu Pharmaceutical Company Incorporated
• Inventors: Iwahashi, Hideaki, Miyachika, Takafumi, Tsutsumi, Nobuo, Ota, Shigeo
• Granted Patent: US 7,910,792 B2
• Time in Patent Office: Days
• US Class Current: 602/54
• CPC Class Codes: A61F 13/01029 made of multiple layers
• CPC Class Codes: A61F 13/0259 characterised by the release liner covering the skin adhering layer
• CPC Class Codes: A61F 2013/00289 easy removing of the protection sheet
• CPC Class Codes: A61F 2013/00812 perforate or breakable zones

Abstract

A patch permitting division of only its release sheet by simply pulling right and left, wherein detachment of the release sheet is easy. There is provided a patch comprising a stretchable support, a plaster applied substantially all over one major surface of the support and a release sheet attached to the whole surface of the plaster wherein only the release sheet is divided at a division zone by simply pulling right and left, and wherein one or two or more precut parts that open when the patch is pulled right and left are disposed in the neighborhood on the division zone.

Claims

1. A patch comprising a stretchable support, an adhesive mass laminated substantially all over one surface of the support and a release sheet attached to the entire surface of the adhesive mass wherein only the release sheet is divided at a division zone by simply pulling apart, and wherein one or more precut parts that are opened when the patch is pulled apart are provided near the division zone.

2. The patch according to claim 1, wherein the division zone is arranged in an S-shaped pattern, a wavy pattern or a zigzag pattern.

3. The patch according to claim 1, wherein the division zone is arranged in a straight-line pattern.

4. The patch according to claim 1, wherein the division zone is arranged in a T-shaped pattern.

5. The patch according to claim 4, wherein the longitudinal bar of a T-shape is parallel to pulling direction of the patch and the tip of said longitudinal bar is pointed toward the division zone.

6. The patch according to claim 1, wherein the precut part is provided convexly toward the pulling directions from the division zone.

7. The patch according to claim 6, wherein the division zone is arranged in a V-shaped pattern or a circular arc pattern.

8. The patch according to claim 1, wherein the release sheet is one piece of release sheet having a division zone, and only the release sheet is divided at the division zone due to the difference in a rate of elongation between the release sheet and the support by simply pulling the patch apart.