Stretch laminates

Patent metadata

Field	Value
Publication number	US-9480606-B2
Application number	US-201414215125-A
Country	US
Kind code	B2
Filing date	Mar 17, 2014
Priority date	May 13, 2005
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A stretch laminate having a first substrate is adhesively attached to an elastic film. The adhesive is applied in a continuous manner to the substrate in a first tack down region which is disposed proximate to an end of the stretch laminate. The adhesive is applied as a plurality of adhesive stripes in an activation region which is interior of the first tack down region. The adhesive stripes have a width and a distance between adjacent adhesive stripes. The ratio of stripe width to distance between the adhesive stripes is in the range of less than about 1 or greater than about 0.33.

First claim

What is claimed is:

1. A mechanically activated stretch laminate comprising:
a first substrate;
an elastic film attached to the first substrate via an adhesive such that the first substrate is attached to the elastic film on a face of the film;
at least one tack down region disposed proximate to an end of the stretch laminate; and
an activation region disposed interior of the tack down region;
wherein the adhesive in a portion of the activation region includes a plurality of stripes having a distance between adjacent stripes and each stripe having a stripe width, wherein a ratio of the stripe width to the distance between adjacent stripes is about 0.75;
and wherein the adhesive in another portion of the activation region includes a plurality of stripes having a distance between adjacent stripes and each stripe having a stripe width, wherein a ratio of the stripe width to the distance between adjacent stripes is about 0.5.

2. The mechanically activated stretch laminate of claim 1 further comprising a second substrate adhesively attached to an opposite face of the elastic film from the first substrate such that the elastic film is sandwiched between the first and second substrate.

3. The mechanically activated stretch laminate of claim 2 , wherein the at least one tack down region includes a first tack down region disposed proximate to an end of the stretch laminate and a second tack down region disposed proximate to another end of the stretch laminate, wherein adhesive in the first and second tack down regions includes a continuous layer, and wherein the activation region is disposed between the first tack down region and the second tack down region.

4. The mechanically activated stretch laminate of claim 2 , wherein the adhesive stripes are continuous.

5. The mechanically activated stretch laminate of claim 2 , wherein at least some of the adhesive stripes comprise a plurality of discrete elements.

6. The mechanically activated stretch laminate of claim 2 , wherein adhesive stripes in a portion of the activation region have a basis weight of 6 gsm while adhesive stripes in another portion of the activation region have a basis weight of 8 gsm.

7. The mechanically activated stretch laminate of claim 3 , wherein the adhesive in the tack down regions has a different basis weight than adhesive in the activation region.

8. A mechanically activated stretch laminate comprising:
a first substrate;
an elastic film attached to the first substrate via an adhesive such that the first substrate is attached to the elastic film on a face of the film;
at least one tack down region disposed proximate to an end of the stretch laminate; and
an activation region disposed interior of the tack down region;
wherein the adhesive in a portion of the intermediate region includes a plurality of stripes having a width of less than 1 mm, the distance between adjacent stripes being 1.5 mm; and wherein the adhesive in another portion of the intermediate region includes a plurality of stripes having a width of less than 1 mm, the distance between adjacent stripes being 2 mm; and wherein the Peel Force value of the first substrate and the elastic film is between about 119 g/cm and about 271 g/cm and the Peel Force value of the second substrate and the elastic film is between about 63 g/cm and about 128 g/cm.

9. The mechanically activated stretch laminate of claim 8 further comprising a second substrate adhesively attached to an opposite face of the elastic film from the first substrate such that the elastic film is sandwiched between the first and second substrate.

10. The mechanically activated stretch laminate of claim 8 , wherein the at least one tack down region includes a first tack down region disposed proximate to an end of the stretch laminate and a second tack down region disposed proximate to another end of the stretch laminate, wherein adhesive in the first and second tack down regions includes a continuous layer, and wherein the activation region is disposed between the first tack down region and the second tack down region.

11. The mechanically activated stretch laminate of claim 8 , wherein the adhesive stripes are continuous.

12. The mechanically activated stretch laminate of claim 8 , wherein at least some of the adhesive stripes comprise a plurality of discrete elements.

13. The mechanically activated stretch laminate of claim 8 , wherein adhesive stripes in a portion of the activation region have a basis weight of 6 gsm while adhesive stripes in another portion of the activation region have a basis weight of 8 gsm.

14. The mechanically activated stretch laminate of claim 8 , wherein the adhesive in the tack down regions has a different basis weight than adhesive in the activation region.

Assignees

• Procter & Gamble

Inventors

• Venkitaraman Anand Rudra
• Reising George Stephen

Classifications

• B32B5/04

  characterised by a layer being specifically extensible by reason of its structure or arrangement {, e.g. by reason of the chemical nature of the fibres or filaments} · CPC title

• B32B7/12

  using interposed adhesives or interposed materials with bonding properties · CPC title

• B32B25/08

  of synthetic resin · CPC title

• B32B5/022

  Non-woven fabric · CPC title

• B32B2307/51

  Elastic · CPC title