Tissue laminates having adhesively joined tissue laminae

• US 5,143,776 A
• Filed: 06/24/1991
• Issued: 09/01/1992
• Est. Priority Date: 06/24/1991
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Givens, Edward J.
• Primary Examiner(s): Ryan, Patrick J.
• Assistant Examiner(s): KRYNSKI, WILLIAM A
• Application Number:
  US07/719,428
• Time in Patent Office: 435 Days
• Field of Search: 428/198, 428/537.5, 428/220, 428/219, 428/195, 428/43, 156/291, 156/164, 604/386
• US Class Current: 428/194
• CPC Class Codes: B32B 2037/1215 Hot-melt adhesive
• CPC Class Codes: B32B 2250/02 2 layers
• CPC Class Codes: B32B 2555/00 Personal care
• CPC Class Codes: B32B 37/00 Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
• CPC Class Codes: B32B 7/14 applied in spaced arrangements, e.g. in stripes
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 428/24793 Comprising discontinuous or differential impregnation or bond
• CPC Class Codes: Y10T 428/24826 Spot bonds connect components

Abstract

Disclosed is a dual laminae tissue laminate having the laminae adhesively joined. The laminae are joined by a water dispersible, and preferably water soluble, hot melt adhesive. The adhesive is applied to one of the laminae in a longitudinally oriented stripe. The stripe is deposited either ina spiral pattern or, preferably, in a melt blown pattern. This stripe provides the advantage that softness is not compromised and that the tissue laminate may be easily disposed, without concern that the adhesive, or the laminate, will not break down in the presence of water.

Claims

1. A laminate of two tissue laminae adhesively joined by hot melt adhesive forming a pattern comprising a single longitudinally oriented strip having a width less than about 5 centimeters.

2. A tissue laminate according to claim 1 wherein said laminate has a softness substantially equivalent to the softness of either lamina prior to joining.

3. A tissue laminate according to claim 1 wherein said hot melt adhesive forms a pattern comprising a longitudinally oriented stripe having a width less than about 2 centimeters.

4. A tissue laminate according to claim 3 wherein said adhesive is melt blown.

5. A tissue laminate according to claim 4 comprising less than about 13 milligrams of adhesive per linear meter of laminate.

6. A tissue lamina according to claim 1 wherein said stripe is generally transversely centered on said laminate.

7. A laminate of two tissue laminae adhesively joined by at least one stripe of hot melt adhesive which is substantially parallel the machine direction of said laminate and has a width less than about 5 centimeters.

8. A tissue laminate according to claim 7 wherein said hot melt adhesive forms a pattern comprising a longitudinally oriented strip having a width less than about 2 centimeters.

9. A tissue laminate according to claim 8 wherein said stripe is generally transversely centered on said laminate.

10. A tissue laminate according to claim 7 wherein said adhesive is melt blown.