TAPE FASTENING SYSTEM FOR DISPOSABLE DIAPER

• US 3,848,594 A
• Filed: 06/27/1973
• Issued: 11/19/1974
• Est. Priority Date: 06/27/1973
• Status: Expired due to Term

• Current Assignee: Kenneth Barclay Buell
• Original Assignee: Kenneth Barclay Buell
• Inventors: Buell, Kenneth Barclay
• Primary Examiner(s): Gauder, Richard A.
• Assistant Examiner(s): McGowan, J. C.
• Application Number:
  US05/374,188
• Time in Patent Office: 510 Days
• Field of Search: 128/284,287,290,286,296,156 117/122P 161/39,149,406
• US Class Current: 604/390
• CPC Class Codes: A61F 13/58 Adhesive tab fastener elements A61F13/5611, A61F13/5616, A61F13/66 take precedence
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive

Abstract

An improved tape fastener system for stronger securement of a tape fastener to corners of a disposable diaper, especially for diapers having relatively weak and/or extensible members. The tape fastener system has several elements which are parallel and are attached to the front and back surface of the diaper. The tape has a generally Y-shaped cross-section with two legs fastened to a back corner of the diaper and the third leg available to attach to a front corner of the diaper.

Claims

1. In a disposable diaper having a back surface anD a front surface, an improved tape fastener system, comprising:

a. a front surface portion;

b. first attachment means associated with the front surface portion and the front surface of the diaper for attaching the front surface portion to the front surface;

c. a back surface portion;

d. second attachment means associated with the back surface portion and the back surface of the diaper for attaching the back surface portion to the back surface;

e. a fastening portion; and

f. third attachment means associated with the fastening portion for attaching the fastening portion to another part of the diaper;

g. the front surface portion, the back surface portion, and the fastening portion joined and attached in an area of joinder adjacent the edge of the diaper;

h. whereby forces imposed on the fastening portion are transmitted to both the front and back surfaces of the diaper.

2. The improved tape fastener system of claim 1 wherein the front surface portion is a release liner, the front surface portion having its upper surface treated to give it moderate adhesive attachment to the third attachment means, the fastening portion being superposed on the front surface portion, and the third attachment means being between the front surface portion and the fastening portion, whereby the fastening portion is moderately held superposed on the front surface of the diaper.

3. The improved tape fastener system of claim 2 wherein the first common point of joinder of the front surface portion, the back surface portion, and the fastening portion lies substantially in a plane midway between the front and back surface of the diaper.

4. The improved tape fastener system of claim 3 wherein the back portion and the fastening portion are an integral strip of tape material.

5. The improved tape fastener system of claim 4 wherein the three attachment means are pressure sensitive adhesives.

6. The improved tape fastener system of claim 3 wherein the three attachment means are pressure sensitive adhesives.

7. The improved tape fastener system of claim 2 wherein the back portion and the fastening portion are an integral strip of tape material. l

8. The improved tape fastener system of claim 7 wherein the three attachment means are pressure sensitive adhesives.

9. The improved tape fastener system of claim 2 wherein the three attachment means are pressure sensitive adhesives.

10. The improved tape fastener system of claim 1 wherein the first common point of joinder of the front surface portion, the back surface portion, and the fastening portion lies substantially in a plane midway between the front and back surface of the diaper.

11. The improved tape fastener system of claim 10 wherein the back portion and the fastening portion are an integral strip of tape material.

12. The improved tape fastener system of claim 11 wherein the three attachment means are pressure sensitive adhesives.

13. The improved tape fastener system of claim 10 wherein the three attachment means are pressure sensitive adhesives.

14. The improved tape fastener system of claim 1 wherein the back portion and the fastening portion are an integral strip of tape material.

15. The improved tape fastener system of claim 14 wherein the three attachment means are pressure sensitive adhesives.

16. The improved tape fastener system of claim 1 wherein the three attachment means are pressure sensitive adhesives.

17. The improved tape fastener system of claim 1 wherein the transverse dimension of the front surface portion is longer than the transverse dimension of the back surface portion.

18. The improved tape fastener system of claim 17 wherein the transverse dimension of the front surface portion is at least about twice as long as the transverse dimension of the back surface portion.

19. The improved tape fastener of claim 1 wherein the attachment between the front surface portion, the back surface portion, and the fastening portion in the area of joinder is in shear when a tensile force is applied to the fastening portion.

20. The improved tape fastener system of claim 19 wherein the segments of the front surface portion, the back surface portion, and the fastening portion, which are coextensive with the area of joinder, are parallel and extend outwardly from the first common point of joinder of the tape portions.

21. A disposable diaper comprising:

a. a thin, flexible, extensible backsheet;

b. an absorptive body having an absorptive core and a topsheet superposed on the core, the absorptive body being superposed on the backsheet so that the core is intermediate the topsheet and the backsheet;

c. a tape fasener system having i. a front surface portion;

ii. first attachment means associated with the front surface portion and the front surface of the diaper for attaching the front surface portion to the front surface;

iii. a back surface portion;

iv. second attachment means associated with the back surface portion and the back surface of the diaper for attaching the back surface portion to the back surface;

v. a fastening portion;

vi. third attachment means associated with the fastening portion for attaching the fastening portion to another part of the diaper;

vii. the front surface portion, the back surface portion, and the fastening portion joined and attached in an area of joinder adjacent the edge of the diaper;

d. whereby forces imposed on the fastening portion are transmitted to both the front and back surfaces of the diaper.

22. The diaper of claim 21 wherein tape support means for attaching the backsheet to the absorptive body is between the backsheet and the absorptive body, the tape support means being between the back surface portion and the absorptive body, whereby forces transmitted to the back surface portion are in turn transmitted through the backsheet to the absorptive body.

23. The diaper of claim 22 wherein the topsheet has a longitudinal dimension longer than the longitudinal dimension of the absorptive core and the excess topsheet is folded around and under the longitudinal end of the core thereby forming a folded under portion, the folded under portion being intermediate the back surface portion of the tape fastener system and the absorptive core.

24. The diaper of claim 22 wherein the front surface portion is attached to the topsheet.

25. The diaper of claim 23 wherein the front surface portion is attached to the topsheet.