Stretch composites and methods of making the composite
First Claim
1. A process for making a stretch composite comprising the steps of:
- a. providing at least one inelastic substrate;
b. applying a tensioning force to the inelastic substrate to form a necked, inelastic substrate;
c. providing an application device, said device including at least one patterned print roll; and
d. printing at least two differing elastomeric members by means of said patterned print roll, onto said substrate to form a stretch composite, said elastomeric members differing in a property selected from the group consisting of differing width dimensions between said elastomeric members, differing mechanical properties between said elastomeric members, differing elastomeric compositions between said elastomeric members and differing visual appearance between said elastomeric members, and wherein said elastomeric members comprise a thermoplastic elastomer and a phase change solvent having the general formula;
R′
-Ly-(Q-Lx)n-1-Q-Ly-R;
(I)
R′
-Ly-(Q-Lx)n-R;
(II)
R′
-(Q-Lx)n-R;
(III)
R′
-(Q-Lx)n-1-Q-Ly-R;
(IV)
R′
-(Q-Lx)n-1-Q-R;
or
(V)a mixture thereof;
wherein Q is a para-ring substituted difunctional aromatic moiety, and wherein the substitutions are in the 1,4 positions;
L is CH2;
R and R′
are the same or different and are independently selected from H, CH3, COOH, CONHR1, CONR1R2, NHR3, NR3R4, hydroxy, or C1-C30 alkoxy;
wherein R1, R2, R3 and R4 are the same or different and are independently selected from H or linear or branched alkyl from C1-C30;
x is an integer from 1 to 30;
y is an integer from 1 to 30; and
n is an integer from 3 to 7;
wherein the phase change solvent has a phase change in a temperature range from 40°
C. to about 250°
C.
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Abstract
A stretch composite having one or more elastomeric members disposed on at least one region of an extensible fibrous substrate to provide stretch properties to a targeted region of the substrate. The composite has been incrementally stretched to at least partially break up the structure of the substrate in order to reduce its resistance to stretch. The stretch composites are useful for disposable and durable articles, such as disposable absorbent articles including diapers, pull-on diapers, training pants, incontinence briefs, catamenial garments, baby bibs, and the like, and durable articles like garments including sportswear, outerwear and the like. The present invention also relates to methods of forming such stretch composites.
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Citations
12 Claims
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1. A process for making a stretch composite comprising the steps of:
-
a. providing at least one inelastic substrate; b. applying a tensioning force to the inelastic substrate to form a necked, inelastic substrate; c. providing an application device, said device including at least one patterned print roll; and d. printing at least two differing elastomeric members by means of said patterned print roll, onto said substrate to form a stretch composite, said elastomeric members differing in a property selected from the group consisting of differing width dimensions between said elastomeric members, differing mechanical properties between said elastomeric members, differing elastomeric compositions between said elastomeric members and differing visual appearance between said elastomeric members, and wherein said elastomeric members comprise a thermoplastic elastomer and a phase change solvent having the general formula;
R′
-Ly-(Q-Lx)n-1-Q-Ly-R;
(I)
R′
-Ly-(Q-Lx)n-R;
(II)
R′
-(Q-Lx)n-R;
(III)
R′
-(Q-Lx)n-1-Q-Ly-R;
(IV)
R′
-(Q-Lx)n-1-Q-R;
or
(V)a mixture thereof; wherein Q is a para-ring substituted difunctional aromatic moiety, and wherein the substitutions are in the 1,4 positions;
L is CH2;
R and R′
are the same or different and are independently selected from H, CH3, COOH, CONHR1, CONR1R2, NHR3, NR3R4, hydroxy, or C1-C30 alkoxy;
wherein R1, R2, R3 and R4 are the same or different and are independently selected from H or linear or branched alkyl from C1-C30;
x is an integer from 1 to 30;
y is an integer from 1 to 30; and
n is an integer from 3 to 7;
wherein the phase change solvent has a phase change in a temperature range from 40°
C. to about 250°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification