Patent EP0053928A2 successfully refreshed from Google Patents.
EP0053928A2
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EP
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Fibrous sliver having particulate matter distributed therethrough
Assignee: Personal Products Co
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Filing: 1981-12-04
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Granted: —
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Expires: 2001-12-04
Abstract
Abstract A fibrous sliver having particulate matter substantially homogeneously distributed therethrough is provided. The sliver is formed by first forming a low weight web of fibrous material and depositing unto said low weight web particulate material. The web is then compacted to the desired weight per unit area.
Inventors
- 👤 Evelyn Ciencewicki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 16:35
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/60; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15617; A61F13/15658; A61F13/53; A61F13/531; A61F13/84; A61F13/8405; A61F2013/15821; A61F2013/530131; A61F2013/530481; A61F2013/530489; Y; Y10; Y10S; Y10S604/00; Y10S604/904
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
71 words
A method for producing a fibrous sliver having particulate material distributed therethrough comprising: forming a low weight web of fibrous material having a weight per unit area of from about 0.015 to about 0.10 times that desired in the finished sliver; depositing said particulate material onto said low weight web; and compacting the web by reducing its width by a factor of about 10.0 to about 66.7 to form the sliver.
Claim 2
Independent Claim
71 words
A method for producing a fibrous sliver having particulate material distributed therethrough comprising: forming a low weight web of fibrous material having a weight per unit area of from about 0.015 to about 0.10 times that desired in the finished sliver; depositing said particulate material onto said low weight web; and compacting the web by reducing its width by a factor of about 10.0 to about 66.7 to form the sliver.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein the largest dimension of said fibrous material is at least 1.5 times that of the particulate material.
Claim 4
Dependent Claim
23 words
The method of claim 2 wherein the largest dimension of said fibrous material is at least 2.0 times that of the particulate material.
Claim 5
Dependent Claim
57 words
any one of to 3 4. The method of/claimsl/wherein said low weight web of fibrous material is formed by first forming a gossamer-like web having a weight per unit area of less than said low weight web and then compacting said gossamer-like web to form the low weight web by reducing the width of the gossamer-like web.
Claim 6
Dependent Claim
35 words
The method of claim 4 wherein said gossamer-like web is formed into a low weight web having longitudinal pleats and a substantial portion of said particulate material is deposited in the trough of said pleats.
Claim 7
Dependent Claim
18 words
any one of to 5 6. The method of/claimsl/wherein said sliver is calendered after being formed by compacting.
Claim 8
Dependent Claim
20 words
The method of claim 6 wherein said sliver is calendered to a density of about 0.2 to about 1.2 gm/cc.
Claim 9
Dependent Claim
29 words
any one of to 7 8. The method of/claimsl/wherein said low weight web has a weight per unit area of from about 3.85 to about 13.42 g m/yd2. :
Claim 10
Dependent Claim
25 words
any-one of to 8 9. The method of/claimsl/wherein said sliver has a weight per unit area of about 154 to about 255 gm/yd 2 .
Claim 11
Dependent Claim
31 words
any one of to 9 10. The method of/claimsl/wherein about 0.05 to about 0.5 grams of particulate matter per gram of low weight web is deposited on said low weight web.
Claim 12
Dependent Claim
22 words
any one of to 10 11. The method of/claimsl/wherein said particulate matter is sprinkled onto the surface of said low weight web.
Claim 13
Dependent Claim
59 words
An elongated sliver comprising fibrous material and particulate material wherein: said fibrous material is in the form of a web having a weight per unit area of from about 154 to about 255 gms/yd 2 , said web having longitudinally extending pleats having peaks and troughs; and a substantial portion of said particulate material being distributed in said troughs.
Claim 14
Dependent Claim
59 words
An elongated sliver comprising fibrous material and particulate material wherein: said fibrous material is in the form of a web having a weight per unit area of from about 154 to about 255 gms/yd 2 , said web having longitudinally extending pleats having peaks and troughs; and a substantial portion of said particulate material being distributed in said troughs.
Claim 15
Dependent Claim
23 words
The sliver of claim 12 wherein the largest dimension of said fibrous material is at least 1.5 times that of the particulate material.
Claim 16
Dependent Claim
23 words
The sliver of claim 12 wherein the largest dimension of said fibrous material is at least 2.0 times that of the particulate material.
Claim 17
Dependent Claim
31 words
anyone of to 14 15. The sliver of/claims 12/in compressed form wherein said pleats are collapsed and said compressed sliver has a density of from about 0.2 to about 1.2 gm/cc.
Claim 18
Dependent Claim
34 words
any one of to 15 16. The sliver of/claims 12/wherein said particulate matter is present in a weight ratio of about 0.05 to about 0.5 grams of particulate material per gram of fibrous material.
Claim 19
Dependent Claim
15 words
any one of to 15 17. The sliver of/claims12/wherein said particulate material is a hydrocolloid.
Claim 20
Dependent Claim
23 words
or claim 18 18. The sliver of claim 17/wherein said hydrocolloidal material is a polymer having hydrophilic groups bonded to the backbone thereof.
Claim 21
Dependent Claim
31 words
The sliver of claim 17 wherein said hydrocolloidal material is a polysaccharide having bonded to the polymer backbone hydrophilic moieties selected from the group consisting of carboxyalkyl, phosphonoalkyl, sulphoalkyl, or phosphoryl.
Claim 22
Dependent Claim
17 words
any one of 17 to 20. The sliver of/claims/19 wherein said h y drocolloidal material is crosslinked.
Claim 23
Dependent Claim
15 words
any one of to 20 21. The sliver of/claims 17/wherein said hydrocolloidal material is carboxymethylcellulosic.
Claim 24
Dependent Claim
21 words
any one of to 21 22. The sliver of/claims 17/wherein said hydrocolloidal material is a polysaccharide having hydrophilic chains grafted thereto.
Claim 25
Dependent Claim
113 words
The sliver of claim 22 wherein said hydrophilic chains have the formula wherein A and B are selected from the group consisting of -O R 3 , -O(alkali metal), -OHNH 3 , -NH 2 , wherein Rl, R 2 and R 3 are selected from the group consisting of hydrogen and alkyl having 1 to 4 carbon atoms, wherein r is an integer having a value of 0 to about 5000, s is an integer having a value of 0 to about 5000, r plus s is at least 500, p is an integer having a value of zero or 1 and q is an integer having a value of 1 to 4.
Claim 26
Dependent Claim
13 words
The sliver of claim 23 wherein said hydrophilic chains are hydrolyzed polyacrylonitrile chains.
Claim 27
Dependent Claim
16 words
The sliver of claim 22 wherein said hydrophilic chains are copolymers of polyacrylamide and sodium polyacrylate.
Claim 28
Dependent Claim
16 words
claim 17 or 26. The sliver of/claim 18 wherein said hydrocolloidal material is a synthetic polymer.
Claim 29
Dependent Claim
33 words
The sliver of claim 26 wherein said synthetic polymer is selected from the group consisting of polyacrylonitrile, grafted polyacrylonitrile, polyvinyl alcohol, hydrophilic polyurethane, poly(alkly phosphonates), partially hydrolyzed polyacrylamides, sulfonated polystyrene, or poly(alkylene oxide).
Claim 30
Dependent Claim
71 words
A catamenial tampon comprising an elongated sliver rolled upon itself into a cylinder, said sliver comprising fibrous material and particulate material wherein: said fibrous material is in the form of a web having a weight per unit area of from about 154 to about 255 gms/yd 2 , said web having longitudinally extending pleats having peaks and troughs; and a substantial portion of said particulate material being distributed in said troughs.
Claim 31
Dependent Claim
71 words
A catamenial tampon comprising an elongated sliver rolled upon itself into a cylinder, said sliver comprising fibrous material and particulate material wherein: said fibrous material is in the form of a web having a weight per unit area of from about 154 to about 255 gms/yd 2 , said web having longitudinally extending pleats having peaks and troughs; and a substantial portion of said particulate material being distributed in said troughs.
Claim 32
Dependent Claim
23 words
The tampon of claim 28 wherein the largest dimension of said fibrous material is at least 1.5 times that of the particulate material.
Claim 33
Dependent Claim
23 words
The tampon of claim 28 wherein the largest dimension of said fibrous material is at least 2.0 times that of the particulate material.
Claim 34
Dependent Claim
33 words
any one of to 30 31. The tampon of/claims28/wherein said particulate matter is present in a weight ratio of about 0.05 to about 0.5 grams of particulate material per gram of fibrous material.
Claim 35
Dependent Claim
15 words
any one of to 31 32. The tampon of/claims28/wherein said particulate material is a hydrocolloid.
Claim 36
Dependent Claim
20 words
The tampon of claim 32 wherein said hydrocolloidal material is a polymer having hydrophilic groups bonded to the backbone hereof.
Claim 37
Dependent Claim
34 words
or claim 33 34. The tampon of claim 32/wherein said hydrocolloidal material is a polysaccharide having bonded to the polymer backbone hydrophilic moieties selected from the group consisting of carboxyalkyl, phosphonoalkyl, sulphoalkyl, or phosphoryl.
Claim 38
Dependent Claim
15 words
any one of to 34 35. The tampon of/claims 32/wherein said hydrocolloidal material is crosslinked.
Claim 39
Dependent Claim
15 words
any one of to 35 36. The tampon of/claims 32/wherein said hydrocolloidal material is carboxymethylcellulosic.
Claim 40
Dependent Claim
21 words
any one of to 36 37. The tampon of/claims 32/wherein said hydrocolloidal material is a polysaccharide having hydrophilic chains grafted thereto.
Claim 41
Dependent Claim
114 words
The tampon of claim 37 wherein said hydrophilic chains have the formula wherein A and B are selected from the group consisting of -OR 3 , -O(alkali metal), -OHNH 3 , -NH 2 , wherein R 1 , R 2 and R 3 are selected from the group consisting of hydrogen and alkyl having 1 to 4 carbon atoms, wherein r is an integer having a value of 0 to about 5000, s is an integer having a value of 0 to about 5000, r plus s is at least 500, p is an integer having a value of zero or 1 and q is an integer having a value of 1 to 4.
Claim 42
Dependent Claim
13 words
The tampon of claim 38 wherein said hydrophilic chains are hydrolyzed polyacrylonitrile chains.
Claim 43
Dependent Claim
16 words
The tampon of claim 37 wherein said hydrophilic chains are copolymers of polyacrylamide and sodium polyacrylate.
Claim 44
Dependent Claim
17 words
claim 32 or 41 . The tampon of/claim 33 wherein said hydrocolloidal material is a synthetic polymer.
Claim 45
Dependent Claim
33 words
The tampon of claim 41 wherein said synthetic polymer is selected from the group consisting of polyacrylonitrile, grafted polyacrylonitrile, polyvinyl alcohol, hydrophilic polyurethane, poly(alkly phosphonates), partially hydrolyzed polyacrylamides, sulfonated polystyrene, or poly(alkylene oxide).
References Cited (Backward Citations)
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