Method of making sanitary napkin comprising three dimensionally shaped tube of absorbent material
First Claim
1. A method of making a shaped tube of absorbent material for an absorbent article, said method comprising the steps of:
- (a) providing a web of absorbent material, said web of absorbent material having a first surface and an opposed second surface;
(b) providing a cover for said web of absorbent material;
(c) at least partially covering the first and second surfaces of said web of absorbent material with said cover to form a covered web of absorbent material;
(d) forming said covered web of absorbent material into a tube of absorbent material;
(e) autogenously bonding one portion of said cover to an opposing portion of said cover while displacing said absorbent material to form at least one bond, forming the shaped tube.
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Accused Products
Abstract
The method of making a shaped tube of absorbent material for the sanitary napkin, in one embodiment, involves the steps of: (a) providing a web of absorbent material, the web of absorbent material having a length, a width, a longitudinal centerline oriented in the direction of the length of the web of absorbent material, a first surface and an opposed second surface; (b) providing a cover for the first and second surfaces of the web of absorbent material; (c) at least partially covering the first and second surfaces of the web of absorbent material with the cover to form a composite web having longitudinal side margins; (d) folding the composite web at least once with folds defining fold lines that are arranged about the longitudinal centerline of the web of absorbent material; and (e) autogenously bonding a portion of the cover that covers the first surface of the web of absorbent material to a portion of the cover that covers an opposing portion of the second surface of the web of absorbent material.
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Citations
8 Claims
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1. A method of making a shaped tube of absorbent material for an absorbent article, said method comprising the steps of:
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(a) providing a web of absorbent material, said web of absorbent material having a first surface and an opposed second surface;
(b) providing a cover for said web of absorbent material;
(c) at least partially covering the first and second surfaces of said web of absorbent material with said cover to form a covered web of absorbent material;
(d) forming said covered web of absorbent material into a tube of absorbent material;
(e) autogenously bonding one portion of said cover to an opposing portion of said cover while displacing said absorbent material to form at least one bond, forming the shaped tube. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making a shaped tube of absorbent material for an absorbent article, said method comprising the steps of:
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(a) providing a web of absorbent material, said web of absorbent material having a length, a width, a longitudinal centerline oriented in the direction of the length of said web of absorbent material, a first surface and an opposed second surface;
(b) providing a cover for the first and second surfaces of said web of absorbent material;
(c) at least partially covering the first and second surfaces of said web of absorbent material with said cover to form a tube-forming composite web of absorbent material having longitudinal side margins;
(d) folding said tube-forming composite web at least once with folds defining fold lines that are arranged about the longitudinal centerline of the web of absorbent material; and
(e) autogenously bonding a portion of said cover that covers said first surface of said web of absorbent material to a portion of said cover that covers an opposing portion of the second surface of said web of absorbent material, forming the shaped tube. - View Dependent Claims (8)
(a) providing a shaped of absorbent material tube made by the method of claim 6, said tube forming composite having a pair of end portions;
(b) providing a base pad;
(c) splaying out the ends of the tube; and
(d) joining said tube to said base pad.
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7. The method of making a shaped tube of absorbent material for an absorbent article comprising the steps of:
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(a) providing a web of absorbent material, said web of absorbent material having a length, a width, a longitudinal centerline oriented in the direction of the length of said web of absorbent material, a first surface and an opposed second surface;
(b) providing a cover for the first and second surfaces of said web of absorbent material;
(c) at least partially covering the first and second surfaces of said web of absorbent material with said cover to form a tube-forming composite web of absorbent material having longitudinal side margins;
(d) folding said tube-forming composite web at least once with folds defining fold lines that are arranged about the longitudinal centerline of the web of absorbent material;
folding the longitudinal side margins of said composite web inward toward the longitudinal centerline about a first longitudinally-oriented fold line to form a C-folded structure;
folding the composite web inward about the longitudinal centerline so that the longitudinal side margins of said folded composite web are brought adjacent to each other; and
(e) autogenously bonding a portion of said cover that covers said first surface of said web of absorbent material to a portion of said cover that covers an opposing portion of the second surface of said web of absorbent material, forming the shaped tube.
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Specification