EP0245933A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Non-woven fabric comprising at least one spun-bonded layer
Assignee: Kimberly Clark Ltd
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Filing: 1987-03-27
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Granted: —
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Expires: 2007-03-27
Abstract
Abstract Non-woven material comprising a web of spunbonded polymeric filaments wherein the web is impregnated with a thermal stabilising agent e.g. a fluorocarbon, before being hot calendered on at least one side. This results in material having an outer surface which is much more resistant to abrasion than an untreated spunbonded surface. The non-woven material may comprise a laminate of layers e.g. two.layers of spunbonded filaments sandwiching a central layer of melt-blown fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Inventors
- 👤 Peter Maddern
- 👤 Kenneth Currie
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 04:52
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/005; D04H3/007; B; B32; B32B; B32B27/00; B32B27/02; B32B27/12; B32B5/00; B32B5/22; B32B5/24; B32B5/26; D04H1/00; D04H1/40; D04H1/54; D04H3/02; D04H3/08; D04H3/14; D04H3/16; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/277; D06M15/70; D06M15/705; D06M17/00; D06M17/04; D06M17/06; Y; Y10; Y10T; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/66
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
26 words
Non-woven material comprising a web of spunbonded polymeric filaments the web being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Claim 2
Dependent Claim
26 words
Non-woven material comprising a web of spunbonded polymeric filaments the web being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Claim 3
Dependent Claim
40 words
A laminate of layers of non-woven material comprising a layer of spunbonded filaments, and a layer of melt-blown polymeric fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering of the outer surface of the spunbonded layer.
Claim 4
Dependent Claim
40 words
A laminate of layers of non-woven material comprising a layer of spunbonded filaments, and a layer of melt-blown polymeric fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering of the outer surface of the spunbonded layer.
Claim 5
Dependent Claim
39 words
A laminate of layers of non-woven material comprising two layers of spunbonded polymeric filaments sandwiching a central layer of melt-blown polymeric fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Claim 6
Dependent Claim
39 words
A laminate of layers of non-woven material comprising two layers of spunbonded polymeric filaments sandwiching a central layer of melt-blown polymeric fibres, the laminate being impregnated with a thermal stabilising agent before hot calendering on at least one side.
Claim 7
Dependent Claim
19 words
A laminate as claimed in any of the preceding claims in which the thermal stabilising agent is a fluorocarbon.
Claim 8
Dependent Claim
25 words
Non-woven material as claimed in any of claims 2 to 4 in which the layers are held together by small bond areas caused by embossing.
Claim 9
Dependent Claim
40 words
A process for preparing non-woven material as claimed in any one of claims l to 5 in which the layer or layers are impregnated with a thermal stabilising agent, at least one surface of the material being thereafter hot calendered.
Claim 10
Dependent Claim
30 words
A process as claimed in Claim 6 in which the calendering is carried out by passing the material through the nip of a smooth heated roller and a backing roller.
Claim 11
Dependent Claim
26 words
A process as claimed in claim 7 wherein the heated roller is of steel and the backing roller is of plastic, cotton, paper or the like.
Claim 12
Dependent Claim
38 words
A process as claimed in either claim 7 or 8 wherein the heated roller is heated to a temperature substantially the same as the melting point of the polymer of the fibres in the layer to be calendered.
Claim 13
Dependent Claim
48 words
l0. A process as claimed in any one of claims 7 to 9 wherein the nip pressure is set so as to give a light pressure and the material is passed through the nip sufficiently quickly so that in effect the surface is given a "shock heat" treatment.
Claim 14
Dependent Claim
21 words
A process as claimed in any one of claims 6 to l0 wherein the material is treated before calendering by heating.
Claim 15
Dependent Claim
33 words
A process as claimed in any one of claims 6 to ll wherein the material is impregnated before calendering with an anti static and fluid repellent coating which comprises the thermal stabilising agent.
Claim 16
Dependent Claim
27 words
A process as claimed in claim l2 wherein the material is coated by running the material through a bath containing the coating together with a wetting agent.
Claim 17
Dependent Claim
28 words
A process as claimed in claim l3 wherein the material is thereafter squeezed to remove excess liquid, and is then passed over heated drums to drive off water.
References Cited (Backward Citations)
US4041203A
Cited
EP0164739A2
Cited
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