Source: https://patents.google.com/patent/US9475264B2/en
Timestamp: 2018-10-23 18:23:59
Document Index: 569221999

Matched Legal Cases: ['Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2007', 'Application No. 2004323904', 'Application No. 2007', 'Application No. 2007']

US9475264B2 - Underwear article comprising an elastic laminate - Google Patents
US9475264B2
US9475264B2 US11845153 US84515307A US9475264B2 US 9475264 B2 US9475264 B2 US 9475264B2 US 11845153 US11845153 US 11845153 US 84515307 A US84515307 A US 84515307A US 9475264 B2 US9475264 B2 US 9475264B2
US20080000003A1 (en )
Preferably, the elastic film layer is breathable. The elastic laminate suitably has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m2 24 h, preferably at least 3000 g/m2 24 h.
In a most preferred embodiment, the elastic laminate comprises first and second fibrous layers of spunbond material, each having a basis weight of between 10 and 35 g/m2, preferably between 12 and 30 g/m2, more preferably between 15 and 25 g/m2 and a breathable elastic film layer having a basis weight between 20 and 100 g/m2, preferably between 20 and 60 g/m2, said elastic laminate having a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m2 24 h, preferably at least 3000 g/m2 24 h.
FIG. 6 shows a pant-type underwear article made of waist regions 18, a front region 12, a back region 14 and a crotch region 16. The waist and the crotch regions are free of an elastic laminate.
FIG. 7 shows the cross section VII-VII in FIG. 6. This is a cross-section of the crotch region comprising a nonwoven material (40) and elastic threads (41) near the longitudinal edges.
FIG. 8 shows the cross-section VIII-VIII in FIG. 6. This is a cross-section of the waist region comprising a nonwoven material (42).
As mentioned previously, the elastic film layer 26 may be breathable. This allows a higher degree of comfort for the wearer, as moisture/humidity build-up is reduced or completely avoided. The breathability of the elastic film layer 26 may be quantified by the Water Vapour Transmission Rate (WVTR) according to ASTM E96-00 Procedure D. According to one embodiment, the elastic laminate 20 has a Water Vapour Transmission Rate of at least 1500 g/m2 24 h, preferably at least 3000 g/m2 24 h as measured by the above ASTM procedure.
According to a most-preferred embodiment of the invention, the elastic laminate 20 comprises first and second fibrous layers 22, 24 of spunbond material, each having a basis weight of between 10 and 35 g/m2, preferably between 12 and 30 g/m2, more preferably between 15 and 25 g/m2 and a breathable elastic film layer 26 having a basis weight between 20 and 100 g/m2, preferably between 20 and 60 g/m2. The elastic laminate 20 according to this embodiment has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m224 h, preferably at least 3000 g/m224 h.
It is preferred that the elastic laminate 20 has a breathability (Water Vapour Transmission Rate) according to ASTM E96-00 Procedure D of at least 1500 g/m2 24 h, preferably at least 3000 g/m2 24 h.
The slope was measured between 0.5 cm−1 and 1.5 cm−1 and −0.5 cm−1 and −1.5 cm-1.
Maximum: curvature: Kmax=±2.5 cm−1;
The slope was measured between 0.5 cm−1 and 2.5 cm−1 and 0.5 cm−1 and −2.5 cm−1.
The tensile strenth of three different samples (A, B and C) were measured according to the method given above and are shown in Table 1.
1. A pant underwear article, comprising front, back, crotch and waist regions, said article having a longitudinal direction and a transverse direction, at least part of the article comprising an elastic laminate composed of first and second layers of fibrous material and an elastic film layer located between said first and second fibrous layers, wherein said elastic laminate has a puncture resistance of at least 15N,
wherein at least one of the layers of fibrous material has an elongation at maximum load greater than an elasticity of the elastic laminate,
wherein a substantial part of the crotch region of the article is free from said elastic laminate,
wherein the entire waist region of the article is free from said elastic laminate,
wherein the pant underwear article does not contain an integral absorbent core,
wherein said first layer of fibrous material is in direct contact with a first side of said elastic film layer, and
wherein said second layer of fibrous material is adhesively laminated to a second side of said elastic film layer.
3. The article as claimed in claim 2, wherein at least the front region of the article comprises the elastic laminate.
4. The article as claimed in claim 1, wherein at least the front region of the article comprises the elastic laminate.
5. The article as claimed in claim 1, wherein both the front and back regions of the article comprise the elastic laminate.
6. The article as claimed in claim 1, wherein said elastic film layer is breathable.
7. The article as claimed in claim 6, wherein said elastic laminate has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m224 h.
8. The article as claimed in claim 7, wherein said elastic laminate has a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 3000 g/m224 h.
9. The article as claimed in claim 1, wherein said elastic laminate has an elasticity in the transverse direction of the article of at least 30% when measured with an elasticity test method utilizing three tensile cycles, comprising stretching a sample of said article to be measured between 0 and an elongation 30%, thereafter relaxing the sample and measuring the permanent elongation (an elongation compared to the length of the sample before said three cycles), the permanent elongation being less than 10% of the length of the sample before the three cycles.
10. The article as claimed in claim 1, wherein both the layers of fibrous material have an elongation at maximum load greater than the elasticity of the elastic laminate.
11. The article as claimed in claim 1, wherein at least one of the layers of fibrous material have an elongation at maximum load of at least 10% greater than the elasticity of the elastic laminate.
12. The article as claimed in claim 1, wherein the first or second layer of fibrous material comprises a mixture of polypropylene and polyethylene polymers.
13. The article as claimed in claim 1, wherein said elastic laminate comprises first and second fibrous layers of spunbond material, each having a basis weight of between 10 and 35 g/m2 and a breathable elastic film layer having a basis weight between 20 and 100 g/m2, said elastic laminate having a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 1500 g/m224 h.
14. The article as claimed in claim 1, wherein the elastic laminate has a puncture resistance of at least 30N.
15. The article as claimed in claim 1, wherein said elastic laminate has an elasticity in the transverse direction of the article of at least 50% when measured with an elasticity test method utilizing three tensile cycles, comprising stretching a sample of said article to be measured between 0 and an elongation 50%, thereafter relaxing the sample and measuring the permanent elongation (an elongation compared to the length of the sample before said three cycles), the permanent elongation being less than 10% of the length of the sample before the three cycles.
16. The article as claimed in claim 1, wherein said elastic laminate has an elasticity in the transverse direction of the article of at least 70% when measured with an elasticity test method utilizing three tensile cycles, comprising stretching a sample of said article to be measured between 0 and an elongation 70%, thereafter relaxing the sample and measuring the permanent elongation (an elongation compared to the length of the sample before said three cycles), the permanent elongation being less than 10% of the length of the sample before the three cycles.
17. The article as claimed in claim 1, wherein the layers of fibrous material have an elongation at maximum load of at least 10% greater than the elasticity of the elastic laminate.
18. The article as claimed in claim 1, the first and the second layers of fibrous material comprise a mixture of polypropylene and polyethylene polymers.
19. The article as claimed in claim 1, wherein said elastic laminate comprises first and second fibrous layers of spunbond material, each having a basis weight of between 15 and 20 g/m2 and a breathable elastic film layer having a basis weight between 20 and 60 g/m2, said elastic laminate having a Water Vapour Transmission Rate according to ASTM E96-00 Procedure D of at least 3000 g/m224 h.
20. The article as claimed in claim 1, wherein the waist region of the article encircles a waist of a user when the article is being worn.
21. The article as claimed in claim 1, wherein the front and back regions do not extend into the waist region.
22. A pant underwear article, comprising front, back, crotch and waist regions, said article having a longitudinal direction and a transverse direction, at least part of the article comprising an elastic laminate composed of first and second layers of fibrous material and an elastic film layer located between said first and second fibrous layers, wherein said elastic laminate has a puncture resistance of at least 15N,
wherein the pant underwear article is reusable after washing,
23. The article as claimed in claim 22, wherein the waist region of the article encircles a waist of a user when the article is being worn.
24. The article as claimed in claim 22, wherein the front and back regions do not extend into the waist region.
US9475264B2 true US9475264B2 (en) 2016-10-25
EP0302957A1 (en) 1987-08-12 1989-02-15 Alcatel Business Systems Device for signalling a message in a telephone system
US20090221982A1 (en) 2005-04-11 2009-09-03 Ricardo Cecconi Elastic material coated in fibers, a diaper comprising said elastic material and a method for the production thereof
An English Translation of the Notice of Reasons for Rejection issued in the corresponding Japanese Patent Application No. 2007-557957 dated Feb. 9, 2010.
English language translation of an Official Action dated Dec. 14, 2010, issued by the Japanese Patent Office in corresponding Japanese Patent Application No. 2007-557957.
English Translation of the Decision on Grant Patent for Invention issued in corresponding paten application No. RU 2007136282.
International Preliminary Report on Patentability for PCT/SE2005/000318.
International Search Report from PCT/SE2005/000318.
Notice of Reasons for Rejection issued Jan. 26, 2010, in Japanese Patent Application No. 2007-534537 (4 pages).
Notice of Reasons for Rejection issued Jun. 12, 2012, in Japanese Patent Application No. 2007-534537 (3 pages).
Office Action issued May 26, 2010, in Australian Patent Application No. 2004323904 (2 pages).
Official Inquiry issued Jan. 4, 2011, in Japanese Patent Application No. 2007-517993 (5 pages).
Official Inquiry issued Oct. 11, 2011, in Japanese Patent Application No. 2007-534537 (4 pages).
Written Opinion from PCT/SE/2005/000318.
US20080000003A1 (en) 2008-01-03 application
US20060271009A1 (en) 2006-11-30 Reinforced side seam
WO2007133128A1 (en) 2007-11-22 Elastic laminate and a method for producing an elastic laminate