Process for printing adhesives, adhesive articles and printing equipment

• US 7,163,740 B2
• Filed: 11/18/2003
• Issued: 01/16/2007
• Est. Priority Date: 06/02/2001
• Status: Expired due to Fees

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Caruso, Pier-Lorenzo, Rosati, Rodrigo, Plumley, Julian Ashton
• Primary Examiner(s): Mayes; Melvin
• Assistant Examiner(s): MCCLELLAND, KIMBERLY KEIL
• Application Number:
  US10/716,133
• Publication Number:
  US 20040134596A1
• Time in Patent Office: 1,155 Days
• Field of Search: 428/317.1, 428/317.3, 402/149
• US Class Current: 428/343
• CPC Class Codes: B05C 1/0813 characterised by means for supplying liquid or other fluent material to the roller
• CPC Class Codes: B41F 15/38 curved
• CPC Class Codes: B41F 17/00 Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
• CPC Class Codes: C08L 2666/02 Organic macromolecular compounds, natural resins, waxes or and bituminous materials
• CPC Class Codes: C09J 153/00 Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
• CPC Class Codes: C09J 153/005 Modified block copolymers
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Abstract

The present invention relates to a process for printing specific adhesives onto articles, such as absorbent articles or release paper, using a specific transfer tool and/or a specific adhesive, having a specific peel force, viscosity, elastic loss modulus, elastic modulus, surface energy and loss tangent modulus; the invention also relates to articles comprising the specific adhesives and to specific printing rolls.

Claims

1. An absorbent article, comprising a sticky material which has a peel force of at least 0.1 N/cm at an average basis weight of 20 g/cm² and

a viscosity η

of less than 2500 mPa·

s at a temperature of between 80 degrees C. to 250 degrees C.; and

an elastic loss modulus G′

, which increases from 10 to 10,000 Pa in less than 60°

C. temperature range as measured by the method ASTM D4440-95, using flat plates oscillating at 1 Hz, wherein the sticky material is disposed on a garment facing surface of the absorbent article.

2. The absorbent article of claim 1 wherein the sticky material has:

an elastic modulus G′

at 20°

C. of less than 100,000 Pa,;

a loss tangent tan δ

(G″

/G′

) at 20°

C. of more than 0.5 as measured by the method ASTM D4440-95, using flat plates oscillating at 1 Hz; and

a surface energy σ

at 20°

C. of less than 35 mJ/m².

4. The absorbent article of claim 1 wherein the sticky material comprises an adhesive and a pigment.

6. The absorbent article of claim 1, wherein the absorbent article further comprises a backsheet, and wherein the sticky material is disposed on the backsheet.

7. The absorbent article of claim 1, wherein the absorbent article further comprises a backsheet and a release strip attached to the backsheet, wherein the sticky material is disposed on the release strip.

3. An absorbent article comprising a sticky material which has a peel force of at least 0.1 N/cm at an average basis weight of 2 g/cm² and a surface energy σ

at 20°

C. of less than 25 mJ/m².

5. The absorbent article of claim 3 wherein the sticky material comprises an adhesive and a pigment.