Laminated material and method for its production
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-003/28
B32B-003/24
출원번호
US-0157631
(2002-05-29)
우선권정보
DE-101 26 143(2001-05-30)
발명자
/ 주소
Groitzsch,Dieter
Schaut,Gerhard
출원인 / 주소
Carl Freudenberg KG
대리인 / 주소
Kenyon &
인용정보
피인용 횟수 :
2인용 특허 :
6
초록▼
A laminate is claimed, having a first cover layer, a fabric with perforations as the middle layer, and a second cover layer, as are a method for its production and the use of the laminate as a fluid absorption and distribution layer made of a nonwoven fabric layer oriented in the Z direction, for ab
A laminate is claimed, having a first cover layer, a fabric with perforations as the middle layer, and a second cover layer, as are a method for its production and the use of the laminate as a fluid absorption and distribution layer made of a nonwoven fabric layer oriented in the Z direction, for absorbent hygiene articles. A three-dimensional form is achieved in that the fabric is present in the shrunk state in the middle layer, i.e. is brought into this state.
대표청구항▼
What is claimed is: 1. A laminate material comprising a first cover layer, a middle layer of fabric having perforations thereon, and a second cover layer, wherein the fabric has been shrunk to cause alignment in the Z direction of the entire laminate material by way of undulation or other geometric
What is claimed is: 1. A laminate material comprising a first cover layer, a middle layer of fabric having perforations thereon, and a second cover layer, wherein the fabric has been shrunk to cause alignment in the Z direction of the entire laminate material by way of undulation or other geometric alignment of the fabric, and wherein the fabric is formed of a polymer having a relatively coarse monofilaments in the lengthwise direction and a relatively fine monofilaments in the crosswise direction. 2. The laminate material according to claim 1, wherein each of the first and the second cover layer is made up of fibers and/or filaments having a melting point at least 30째 C. above the melting or softening point of the fabric. 3. The laminate material according to claim 1, wherein at least one cover layer is made up of crimped staple fiber sheet or continuous filaments. 4. The laminate material according to claim 1, wherein at least one cover layer is made up of a pre-bonded fabric. 5. The laminate material according to claim 1, wherein at least one of the first and second cover layers further comprises thermoplastically deformable and hot-bondable material. 6. The laminate material according to claim 1, wherein the fabric in the middle layer is an interlaid scrim having filaments bonded to one another at their intersecting locations, using an additional adhesive or a binder. 7. The laminate material according to claim 1, wherein the fabric is formed by a net of polymer mass having intersecting filaments that are hot-bonded or bonded to each other by their polymer mass. 8. The laminate material according to claim 1, wherein the fabric is formed by a net of polymer mass having intersecting filaments that are arranged at an angle of 90째 relative to one another. 9. The laminate material according to claim 1, wherein the fabric is adapted to shrink under the processing conditions and usage in a preferential direction, and not shrink in a direction perpendicular to the preferential direction. 10. The laminate material according to claim 1, wherein a melt mass of the melted crosswise filaments is collected on the lengthwise filaments. 11. The laminate according claim 1, wherein the shrinkage in the lengthwise direction is 20 to 75% of the length of the non-shrunken starting material. 12. The laminate according claim 1, wherein the laminate has a mass per unit area of 50 to 200 g/m2. 13. The laminate according to claim 1, wherein the melting or softening point of the fibers of the first cover layer is at least 20 to 30째 C. higher than the melting or softening point of a part of the middle layer with the lowest melting point. 14. The laminate according to claim 1, wherein each of the first and/or the second layer are formed of hydrophilic fiber sheets. 15. The laminate according claim 14, wherein the second layer constitutes 5 to 50% of the entire weight of the laminate. 16. The laminate according to claim 1, wherein the cover layer shrinks insignificantly in comparison to the middle layer. 17. The laminate according to claim 14, wherein the first cover layer and the second cover layer form a hydrophilic gradient. 18. An absorbent hygiene article comprising a fluid absorption and distribution layer, wherein said layer comprises the laminate according to claim 1. 19. A laminate having a first cover layer, a middle layer made of non-intersecting filaments, and a second cover layer, the non-intersecting filaments having been shrunk to cause alignment in the Z direction of the entire laminate by way of undulation or other geometric alignment of the middle layer, wherein the middle layer further comprises parallel monofilaments made of a first thermoplastic, oriented lengthwise; and monofilaments made of a second thermoplastic being deposited above and/or below the filaments of the first thermoplastic; the second monofilaments being arranged such that at least two parallel filaments of the first thermoplastic, aligned in a linear orientation, are intersected and bonded. 20. The laminate according to claim 19, wherein the first monofilaments have a melting or softening point that is at least 30째 higher than the melting point of the fabric. 21. The laminate according to claim 19, wherein the second monofilaments are deposited sinusoidally over the first monofilaments that are oriented lengthwise. 22. The laminate according to claim 19, wherein the second monofilaments have a bicomponent polymer structure, where at least one polymer component having a melting or softening point that is at least 30째 higher than that of the monofilaments made of a first thermoplastic. 23. An absorbent hygiene article comprising a fluid absorption and distribution layer, wherein said layer comprises the laminate according to claim 19.
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이 특허에 인용된 특허 (6)
Ing-Britt Magnusson SE; Peter Hedenberg SE, Absorbent product comprising at least one thermoplastic component to bond layers.
Gorman Michael R. (St. Paul MN) Becker Dennis L. (St. Paul MN) Folske Donald W. (St. Paul MN) Melbye William L. (St. Paul MN) Nestegard Susan K. (St. Paul MN) Ott Ronald L. (St. Paul MN), Sheet of loop material, and garments having such loop material incorporated therein.
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