Patent US2599199A successfully refreshed from Google Patents.
Patent EP0080382A2 successfully refreshed from Google Patents.
EP0080382A2
Expired / Lapsed
EP
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Microfibre web product
Assignee: Kimberly Clark Ltd
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Filing: 1982-11-24
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Granted: —
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Expires: 2002-11-24
Abstract
Abstract A method of making a non-woven web of melt blown polymeric fibres wherein the melt blown fibres have particles introduced into the stream of microfibres after the microfibres have been extruded. If the particles are of super absorbent material they are distributed substantially individually and spaced throughout the web and provide effective results when used for example in a sanitary napkin, diaper or incontinence pad. If the particles are for example, clay, calcium carbonate, kaolin chalk or the like, then a wiper product made from the web has improved wiping properties.
Inventors
- 👤 Mansoor Ahmad Dr. Minto
- 👤 Dennis Graham Storey
- 👤 Geoffrey Robert Dr. Owen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 10:56
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/407; A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15617; A61F13/15658; A61F13/53; A61L; A61L15/00; A61L15/16; A61L15/18; A61L15/22; A61L15/28; A61L15/42; A61L15/60; D04H1/42; D04H1/425; D04H1/4282; D04H1/4291; D04H1/54; D04H1/70; D04H1/72; D04H1/724; D04H1/732; D04H3/00; D04H3/08; D04H3/14; D04H3/16; D04H5/00; D04H5/02; D04H5/06; D04H5/08; A61F2013/15008; A61F2013/15048; A61F2013/15821; A61F2013/530131; A61F2013/530481; A61F2013/530489; A61F2013/530496
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
78 words
A method of making a non-woven web comprising extruding a molten polymeric material in such a way as to produce a stream of melt blown polymeric microfibres, directing absorbent particles into the stream of microfibres whilst the fibres are in a tacky state so that the particles adhere to the fibres subsequently quenching the fibres or otherwise allowing them to cool so that -the fibres are set and then forming or consolidating the set fibres into a web.
Claim 2
Independent Claim
78 words
A method of making a non-woven web comprising extruding a molten polymeric material in such a way as to produce a stream of melt blown polymeric microfibres, directing absorbent particles into the stream of microfibres whilst the fibres are in a tacky state so that the particles adhere to the fibres subsequently quenching the fibres or otherwise allowing them to cool so that -the fibres are set and then forming or consolidating the set fibres into a web.
Claim 3
Independent Claim
58 words
A method of making a non-woven web comprising extruding molten polymeric material in such a way as to produce a stream of melt blown polymeric microfibres, directing particles of super absorbent material into the stream of microfibres and then forming or consolidating the fibres into a web with the particles distributed substantially individually and spaced throughout the web.
Claim 4
Independent Claim
58 words
A method of making a non-woven web comprising extruding molten polymeric material in such a way as to produce a stream of melt blown polymeric microfibres, directing particles of super absorbent material into the stream of microfibres and then forming or consolidating the fibres into a web with the particles distributed substantially individually and spaced throughout the web.
Claim 5
Dependent Claim
28 words
A method as claimed in Claim 1 or 2 in which the particles are blown onto the stream of fibres shortly after the fibres leave an extrusion nozzle.
Claim 6
Independent Claim
26 words
A method as claimed in any one of Claims 1 to 3 in which the particles are given an electrostactic charge prior to contacting the fibres.
Claim 7
Independent Claim
30 words
A method as claimed in any one of the preceding claims in which the particles are injected into an air stream prior to the air stream impinging on the fibres.
Claim 8
Dependent Claim
40 words
A method as claimed in Claim 5 in which the velocity of the said air stream is adjusted so that the majority of the particles are trapped by the melt blown fibres and do not pass through the fibre stream.
Claim 9
Dependent Claim
22 words
A method as claimed in Claim 6 in which the said air stream has a velocity of about 6000 feet per minute.
Claim 10
Dependent Claim
26 words
A method as claimed in Claim 1 or 2 in which the web is hot calendered or embossed by passing it between heated patterned bonding rolls.
Claim 11
Dependent Claim
27 words
A method as claimed in Claim 8 in which the depth of the embossing member on the patterned roll is greater than the thickness of the web.
Claim 12
Independent Claim
20 words
A method as claimed in either Claims 8 or 9 in which the embossing rolls are driven at different speeds.
Claim 13
Independent Claim
31 words
A method as claimed in any of Claims 1 to 10 in which other fibres are introduced into the stream of microfibres prior to formation of the fibres into a web.
Claim 14
Dependent Claim
19 words
A meltblown microfibre web characterised by the presence of superabsorbent particles distributed substantially individually and spaced throughout said web.
Claim 15
Dependent Claim
19 words
A meltblown microfibre web characterised by the presence of superabsorbent particles distributed substantially individually and spaced throughout said web.
Claim 16
Dependent Claim
21 words
A web as claimed in Claim 12 wherein the particles bear an electrostatically derived charge prior to contact with the web.
Claim 17
Dependent Claim
39 words
A web of melt blown thermoplastic microfibre and absorbent particles or granules, the particles or granules being firmly adhered to the fibres by being brought into contact with the fibres whilst the fibres are still in a tacky condition.
Claim 18
Dependent Claim
39 words
A web of melt blown thermoplastic microfibre and absorbent particles or granules, the particles or granules being firmly adhered to the fibres by being brought into contact with the fibres whilst the fibres are still in a tacky condition.
Claim 19
Dependent Claim
25 words
A web as claimed in any of Claims 12 to 14 having wood pulp or staple textile fibres intermingled with the melt blown thermoplastic fibres.
Claim 20
Dependent Claim
32 words
16 . A web as claimed in any of Claims 12 to 15 in which the fibres of the melt blown thermoplastic material have a diameter of between 1 and 50 microns.
Claim 21
Dependent Claim
25 words
A web as claimed in any of Claims 12 to 16 in which the particles have a maximum dimension of between 1 and 100 microns.
Claim 22
Dependent Claim
31 words
A web as claimed in any of Claims 14 to 17 in which the particles are clay, kaolin chalk, calcium carbonate, sodium sulphate, sodium carbonate, aluminium oxide or calcined china clay.
Claim 23
Dependent Claim
18 words
A web as claimed in any of Claims 14 to 18 including particles of organic material, e.g. sponge.
Claim 24
Dependent Claim
30 words
A sanitary napkin, diaper, incontinence pad or the like including a web containing substantially individual spaced particles of super absorbent material as claimed in any of Claims 12 to 17.
References Cited (Backward Citations)
No citation records indexed.
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