Stretch releasable tape flag

• US 6,910,667 B2
• Filed: 06/17/2002
• Issued: 06/28/2005
• Est. Priority Date: 06/17/2002
• Status: Expired due to Term

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Mizuno, Eiji, O'Leary, Timothy J.
• Primary Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US10/172,962
• Publication Number:
  US 20030232190A1
• Time in Patent Office: 1,107 Days
• Field of Search: 428/354, 428/355.RA, 428/355.AC, 428/343, 221/33, 248/205.3
• US Class Current: 248/205.3
• CPC Class Codes: B32B 7/022 Mechanical properties
• CPC Class Codes: B42F 21/00 Indexing means; Indexing tabs or protectors therefor
• CPC Class Codes: B42F 21/06 Tabs detachably mounted on sheets, papers, cards, or suspension files
• CPC Class Codes: C09J 2301/162 the carrier being a laminate constituted by plastic layers only
• CPC Class Codes: C09J 2301/302 the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
• CPC Class Codes: C09J 2301/308 the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive
• CPC Class Codes: C09J 7/22 Plastics; Metallised plastics
• CPC Class Codes: C09J 7/29 Laminated material metallised plastics C09J7/22
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• 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 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2861 having readily strippable combined with readily readhearable properties [e.g., stick-ons, etc.]
• CPC Class Codes: Y10T 428/2891 including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof

Abstract

A stretch releasable adhesive strip includes an extensible backing layer including a first adhesive region and a flexible support layer attached to the backing layer adjacent the first adhesive region that includes a second adhesive region of a repositionable pressure sensitive adhesive. To make the adhesive strip easier to handle and write on, the support layer is stiffer than the backing layer.

Claims

1. A stretch releasable adhesive article, comprising:

(a) an extensible backing having an elongation at break of at least about 50%, said backing including first and second opposed major surfaces, a first end portion and a second end portion;

(b) a first adhesive region of permanent pressure sensitive adhesive provided on said backing first end portion first major surface;

(c) a support layer having opposed first and second major surfaces, said support layer second major surface arranged along said backing second end portion first major surface; and

(d) a second adhesive region of repositionable pressure sensitive adhesive provided on at least a portion of said support layer first major surface;

wherein the flexural strength of said backing is less than the flexural strength of said support.

2. A stretch releasable adhesive article as defined in claim 1, wherein said second adhesive region is provided adjacent said first adhesive region.

3. A stretch releasable adhesive article as defined in claim 1, wherein said support layer includes a first end portion and a non-adhesive second end portion, said first end portion arranged between said backing and said second adhesive region and said non-adhesive second end portion extending outwardly from between said backing and said second adhesive region.

4. A stretch releasable adhesive article as defined in claim 1, wherein said support layer includes a first end portion arranged between said backing and said second adhesive region and a second end portion extending around at least a portion of said backing second end portion.

5. A stretch releasable adhesive article as defined in claim 1, wherein at least a portion of said backing is arranged between said first adhesive region and a first end portion of said support layer.

6. A stretch releasable adhesive article as defined in claim 5, wherein said support layer includes a first end portion arranged adjacent at least a portion of said backing, an intermediate portion extending from said first end portion beyond said backing, said intermediate portion being provided with said second adhesive region adjacent said backing, and a non-adhesive second end portion extending from said intermediate portion.

7. A stretch releasable adhesive article as defined in claim 1, wherein said support layer includes a first end portion embedded in and surrounded by said backing and a non-adhesive second end portion extending outwardly from said backing.

8. A stretch releasable adhesive article as defined in claim 1, wherein said backing is folded around an end portion of said support layer, and further wherein said backing includes a first end portion removably adhered to said first major surface of said support layer, a second end portion attached to said second major surface of said support layer opposite said first major surface, and a hinge portion connecting said first end portion with said second end portion, whereby said backing first end portion can be separated from said support layer and said support layer can be pivoted to allow the article to be stretched removed from a surface.

9. A stretch removable tape flag for temporarily marking items, comprising:

(a) an extensible backing layer having an elongation at break of at least about 50%, said backing having first and second opposed major surfaces and first and second end portions, said first end portion first surface including a first adhesive region of a permanent pressure sensitive adhesive; and

(b) a flexible support layer including a surface having at least a portion attached to said backing layer first surface adjacent said first adhesive region, said support layer including a second adhesive region of a repositionable pressure sensitive adhesive opposite the surface of the flexible support layer attached to said backing layer adjacent said first adhesive region;

said support layer having a flexural strength greater than said backing layer flexural strength.

10. A stretch releasable adhesive article, comprising:

(a) an extensible backing including first and second opposed major surfaces, a first end portion, and a second end portion;

(b) a permanent pressure sensitive adhesive provided on the first end portion of the first major surface of the backing;

(c) a repositionable pressure sensitive adhesive provided adjacent the permanent pressure sensitive adhesive; and

(d) a support layer at least partially arranged between the repositlonable pressure sensitive adhesive and the second end portion of the first major surface of the backing, the support layer extending beyond the repositionable pressure sensitive adhesive to form a tab;

wherein the flexural strength of the backing is less than the flexural strength of the support and wherein the support layer is essentially non-extensible.