Easy removal tamper-indicating label

• US 4,787,158 A
• Filed: 03/12/1987
• Issued: 11/29/1988
• Est. Priority Date: 08/22/1985
• Status: Expired due to Fees

• Current Assignee: Matt J. Vitol
• Original Assignee: Matt J. Vitol
• Inventors: Vitol, Matt J.
• Primary Examiner(s): Peshock, Robert
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US07/024,966
• Time in Patent Office: 628 Days
• Field of Search: 40/2 R, 40/594, 428/191, 156/289
• US Class Current: 40/638
• CPC Class Codes: G09F 2003/0245 Differential adhesive strength
• CPC Class Codes: G09F 2007/127 by adhesive
• CPC Class Codes: G09F 3/02 Forms or constructions layered products B32B
• CPC Class Codes: G09F 7/12 the elements being secured or adapted to be secured by self-adhesion, moisture, suction, slow-drying adhesive or the like
• CPC Class Codes: Y10S 428/916 Fraud or tamper detecting
• CPC Class Codes: Y10T 428/24769 Cellulosic

Abstract

An easy removal pressure-sensitive adhesive-backed label includes a tamper indicator which is especially useful as a pricing label for consumer goods is provided. The label includes nonadhesive finger grip which may be grasped with the fingers to assist in removal of the label from the surface to which it has been applied. The label further includes a score line which causes it to separate completely into two sections, thus bisecting the information on the label, when removal of the label is attempted. Reapplication of the label to another surface, such as might be attempted by an unscrupulous consumer desiring to switch labels, requires precise alignment of the label sections to avoid detection. A method for producing this tamper indicating pressure-sensitive adhesive label which may be readily adapted to conventional laminate production line procedures is also provided.

Claims

1. A tamper indicating label for removable application to a substrate including a first sheet having a first, information-conveying surface and a second adhesive-receiving surface opposite said first surface, a layer of pressure-sensitive adhesive adjacent to and completely covering said second surface, finger grip means on said second surface for grasping the edge of the label immediately interior of and adjacent to the perimeter of the label comprising a zone where the adhesive has been neutralized to render the zone nonadhesive, marking means on said first surface for marking the location of said finger grip means, tamper indicating means for indicating the unauthorized removal and reapplication of the label to the substrate, and a second backing sheet including a low adhesion portion in mating contact with the adhesive layer of the first sheet.

2. The label described in claim 1, wherein said tamper indicating means includes score line means bisecting said first surface of said first sheet into two sections comprising a line of weakening in said first sheet which causes said label to separate completely into two sections along said line of weakening when the label is pulled from the substrate.

3. The label described in claim 2, wherein each of said two sections includes finger grip means.

4. A method for producing an easy removal tamper indicating pressure-sensitive adhesive label including the steps of:

(a) providing a first sheet having at least one surface characterized by low adhesion;

(b) perforating said first sheet to form a plurality of perforations arranged in a predetermined pattern in said sheet, wherein each of said perforations has a predetermined configuration;

(c) providing a second sheet having a first, information-conveying surface and a second, adhesive-receiving surface opposite said first surface;

(d) applying a layer of pressure-sensitive adhesive to said second surface of said second sheet;

(e) laminating said first sheet to said second surface of said second sheet to form a laminate so that said perforations expose adhesive-containing zones on the first sheet side of said laminate;

(f) neutralizing the adhesive in said adhesive-containing zones to form nonadhesive zones;

(g) scoring the first surface of said first sheet in a predetermined pattern to create lines of weakening therein; and

(h) cutting said laminate to form a plurality of labels, each of said labels including a line of weakening and at least two nonadhesive zones contained within the perimeter thereof.

5. The method described in claim 4, further including the step of applying a marker to said laminate to mark the location of each of said nonadhesive zones in each of said labels.

6. The method described in claim 4, further including the step of applying information to said first, information-receiving surface of said second sheet.

7. The method described in claim 4, wherein said adhesive is neutralized by applying an adhesive-neutralizing material to each of said adhesive-containing zones.

8. The method described in claim 7, wherein said adhesive-neutralizing material is in the form of a powder.

9. The method described in claim 8, wherein said adhesive-neutralizing material is selected from the group consisting of magnesium silicate, charcoal and silica.

10. The method described in claim 9, wherein said adhesive-neutralizing material is magnesium silicate.