Absorbent article with low cold flow construction adhesive

• US 20070055211A1
• Filed: 08/30/2006
• Published: 03/08/2007
• Est. Priority Date: 09/02/2005
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Ebrahim, Rezai, Shunketsu, Sue
• Granted Patent: US 8,038,661 B2
• Time in Patent Office: Days
• US Class Current: 604/366
• CPC Class Codes: A61F 13/15203 Properties of the article, e.g. stiffness or absorbency chemical aspects A61L15/00
• CPC Class Codes: A61F 13/15699 Forming webs by bringing together several webs, e.g. by laminating or folding several webs, with or without additional treatment of the webs
• CPC Class Codes: A61F 13/15739 Sealing, e.g. involving cutting
• CPC Class Codes: A61F 13/515 characterised by the interconnection of the topsheet and the backsheet
• CPC Class Codes: A61F 13/539 characterised by the connection of the absorbent layers with each other or with the outer layers
• CPC Class Codes: A61F 2013/15569 Adhesivity
• CPC Class Codes: A61F 2013/53908 with adhesive
• CPC Class Codes: A61L 15/24 Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof A61L15/225 takes precedence
• CPC Class Codes: A61L 15/58 Adhesives

Abstract

Absorbent articles assembled using a low cold flow construction adhesive are described. The absorbent articles have an in bag compression opening force of less than about 0.75N. A method for making the absorbent articles is also described.

Claims

1. A disposable absorbent article having a longitudinal centerline and a lateral centerline, a front waist region with a front waist edge, a rear waist region with a rear waist edge, a crotch region disposed between said front and rear waist regions and two spaced apart longitudinal side edges joining said front waist edge to said rear waist edge and comprising an assembly of components including:

a) a topsheet;

b) a backsheet underlying said topsheet;

c) an absorbent core disposed between said topsheet and said backsheet;

d) at least one feature selected from the group consisting of;

i) a fastening system for joining said front waist region to said rear waist region when said absorbent article is worn;

ii) a barrier cuffs lying adjacent and inboard one of said longitudinal side edges;

iii) a gasketing cuffs lying between said longitudinal side edge and said barrier cuff;

iv) front ears disposed in said front waist region;

v) back ears disposed in said rear waist region;

vi) a topsheet

vii) a backsheet

viii) an absorbent core wherein said absorbent core comprises at least one of a core cover, a dusting layer, an acquisition member, a distribution member and a storage member; and

ix) a receiving member; and

e) a low cold flow construction adhesive suitable for joining at least one of said components to another of said components wherein said adhesive comprises an ethylene-based polyolefin resin with an effective amount of a crystallization enhancer combined therewith and said absorbent article has an in bag compression opening force of less than about 0.75N.

2. A disposable absorbent article according to claim 1 wherein said opening force is less than about 0.6N

3. A disposable absorbent article according to claim 2 where said opening force is less than about 0.5N.

4. A method of assembling an absorbent article having a longitudinal centerline and a lateral centerline, a front waist region with a front waist edge, a rear waist region with a rear waist edge, a crotch region disposed between said front and rear waist regions and two spaced apart longitudinal side edges joining said front waist edge to said rear waist edge wherein said absorbent article has a low in bag compression opening force, the method comprising the steps of:

a) providing a low cold flow construction adhesive wherein said adhesive comprises an ethylene-based polyolefin resin;

b) providing a collection of absorbent article components, said components selected from the group consisting of;

i) a fastening system for joining said front waist region to said rear waist region when said absorbent article is worn;

ii) a barrier cuff lying between one of said longitudinal side edges and said longitudinal centerline;

iii) a gasketing cuff lying between said longitudinal side edge and said barrier cuff;

iv) a front ear disposed in said front waist region;

v) a back ear disposed in said rear waist region;

vi) vi) a topsheet

vii) a backsheet

viii) an absorbent core wherein said absorbent core comprises at least one of a core cover, a dusting layer, an acquisition member, a distribution member and a storage member; and

ix) a receiving member; and

c) joining at least one of said absorbent article components to another of said absorbent article components using said low cold flow construction adhesive so as to assemble said absorbent article whereby said absorbent article has an in bag compression opening force of less than about 0.75N.

5. A method according to claim 4 wherein step c comprises the step of joining said topsheet to an underlying nonwoven layer.

6. A method according to claim 4 wherein step c comprises the step of joining an elastic material to a nonwoven material to form said barrier cuff.

7. A method according to claim 4 wherein step c comprises the step of joining an elastic material to a nonwoven and backsheet materials.

8. A method according to claim 4 wherein step c comprises the step of joining said acquisition layer to said core cover.

9. A method according to claim 4 wherein step c comprises the step of joining said distribution layer to said core cover.

10. A method according to claim 4 wherein step c comprises the step of joining said topsheet to said backsheet adjacent one of said longitudinal edges of said absorbent article.

11. A method according to claim 4 wherein step c comprises the step of joining said receiving member to said backsheet.

12. A method according to claim 4 wherein step c comprises the step of joining said core cover to said dusting layer.

13. A method according to claim 4 wherein step c comprises the step of joining said core to said backsheet.

14. A method according to claim 4 wherein step c comprises the step of joining said dusting layer to said backsheet.