Patent EP0156160A2 successfully refreshed from Google Patents.
EP0156160A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Microfibre web product
Assignee: Kimberly Clark Ltd
•
Filing: 1982-11-24
•
Granted: —
•
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 absorbent particles introduced into the stream of microfibres after the microfibres have been extruded. The absorbent particles are directed into the stream of microfibres whilst the fibres are in a tacky state so that the particles adhere to the fibres.
Inventors
- 👤 Mansoor Ahmad Dr. Minto
- 👤 Dennis Graham Storey
- 👤 Geoffrey Robert Dr. Owen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:11
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: 14
Claim 1
Independent Claim
80 words
A method of making a fluid retentive 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
80 words
A method of making a fluid retentive 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
Dependent Claim
26 words
A method as claimed in Claim 1 in which the particles are blown onto the stream of fibres shortly after the fibres leave an extrusion nozzle.
Claim 4
Dependent Claim
24 words
A method as claimed in either claim 1 or 2 in which the particles are given an electrostatic charge prior to contacting the fibres.
Claim 5
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 6
Dependent Claim
39 words
A method as claimed in Claim 4 in which the velocity of the said air stream is adjusted so that the majority of the particles are adhered by melt blown fibres and do not pass through the fibre stream.
Claim 7
Independent Claim
25 words
A method as claimed in any preceding claim in which the web is hot calendered or embossed by passing it between heated patterned bonding rolls.
Claim 8
Dependent Claim
27 words
A method as claimed in Claim 6 in which the depth of the embossing member on the patterned roll is greater than the thickness of the web.
Claim 9
Dependent Claim
21 words
8 A method as claimed in either Claims 6 or 7 in which the embossing rolls are driven at different speeds.
Claim 10
Independent Claim
28 words
A method as claimed in any preceding Claim in which other fibres are introduced into the stream of microfibres prior to formation of the fibres into a web..
Claim 11
Independent Claim
21 words
A method as claimed in any one of the preceding claims in which a wetting agent is added to the fibres.
Claim 12
Independent Claim
26 words
A method as claimed in any one of the preceding claims in which a surfactant is added to the fibres in order to assist wetting thereof.
Claim 13
Dependent Claim
40 words
A fluid retentive web comprising meltblown thermoplastic microfibre and aborbent 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 14
Dependent Claim
40 words
A fluid retentive web comprising meltblown thermoplastic microfibre and aborbent 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.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.