EP0275047A2
Expired / Lapsed
EP
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Process for producing an antibacterial fiber article
Assignee: HAGIWARA GIKEN Ltd
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Filing: 1988-01-08
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Granted: —
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Expires: 2008-01-08
Abstract
Abstract A fiber material wherein zeolite particles retaining antibacterial metal ion, such as Ag, Cu or Zn ion, at ion-exchangeable sites of the zeolite are included in a low-melting component of conjugated fibers which comprise a low-melting component and a high-melting component. Upon heating, the low-melting component spreads to cause more zeolite particles exposed, which yields higher antibacterial activity in a fiber article produced from the conjugated fibers.
Inventors
- 👤 Satoshi Ando
- 👤 Akira Dohno
- 👤 Zenji Hagiwara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:27
CPC Classifications
D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; A; A01; A01N; A01N25/00; A01N25/34; A01N59/00; A01N59/16; A01N59/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
A fiber material for an antibacterial fiber article, characterized in that zeolite particles retaining therein at least one metal ion having antibacterial properties at ion-exchangeable sites of the zeolite are retained in a low-melting component of conjugated fibers comprising said low-melting component and a high-melting component, provided that the low-melting component occupies at least a part of the periphery of the cross section of the fibers, and the zeolite particles have a specific surface area of at least 150 m²/g and a SiO₂/Al₂O₃ ratio of at most 14.
Claim 2
Dependent Claim
88 words
A fiber material for an antibacterial fiber article, characterized in that zeolite particles retaining therein at least one metal ion having antibacterial properties at ion-exchangeable sites of the zeolite are retained in a low-melting component of conjugated fibers comprising said low-melting component and a high-melting component, provided that the low-melting component occupies at least a part of the periphery of the cross section of the fibers, and the zeolite particles have a specific surface area of at least 150 m²/g and a SiO₂/Al₂O₃ ratio of at most 14.
Claim 3
Dependent Claim
46 words
The fiber material as claimed in claim 1, characterized in that a combination of the high-melting component and the low-melting component is selected from the group of combinations consisting of polyester / polyester, polyester / polyolefine, polyester / polyamide, polyolefine / polyolefine and polyamide / polyamide.
Claim 4
Dependent Claim
92 words
The fiber material as claimed in claim 1 or 2, characterized in that the cross section of the conjugated fibers is of a sheath-core structure composed of a core comprising the high-melting component and a sheath comprising the low-melting component, an incomplete sheath- core structure composed of a core comprising the low-melting component and a sheath comprising the high-melting component with the core being partially exposed at the periphery of the fiber cross section, or a side-by-side structure in which the low-melting component is placed side by side with the high-melting component.
Claim 5
Dependent Claim
45 words
The fiber material as claimed in any one of the preceding claims, characterized in that a ratio of the area of the high-melting component to the area of the low-melting component in the fiber cross section is in a range of from 30:70 to 70:30.
Claim 6
Dependent Claim
41 words
The fiber material as claimed in any one of the preceding claims, characterized in that 0.05 to 5 percent by weight, based on the low-melting component, of the zeolite particles retaining the antibacterial metal ion is retained in the low-melting component.
Claim 7
Dependent Claim
31 words
The fiber material as claimed in any one of the preceding claims, characterized in that zeolite particles are composed of A-type zeolite, X-type zeolite, Y-type zeolite, mordenite or a mixture thereof.
Claim 8
Dependent Claim
43 words
The fiber material as claimed in any one of the preceding claims, characterized in that the metal ion having antibacterial properties is ion of one or more metals selected from the group consisting of silver, copper, zinc, iron, chromium, nickel, tin and mercury.
Claim 9
Dependent Claim
31 words
The fiber material as claimed in claim 7, characterized in that the metal ion is ion of one or more metals selected from the group consisting of silver, copper and zinc.
Claim 10
Dependent Claim
32 words
The fiber material as claimed in any one of the preceding claims, characterized in that the zeolite particles retain therein at least silver ion as the metal ion having the antibacterial properties.
Claim 11
Dependent Claim
38 words
The fiber material as claimed in any one of the preceding claims, characterized in that the amount of the metal having antibacterial properties present on the zeolite particles is less than the ion exchange capacity of the zeolite.
Claim 12
Dependent Claim
39 words
The fiber material as claimed in claim 10, characterized in that the amount of the metal ion having antibacterial properties present on the zeolite particles is about 90 % or less of the ion exchange capacity of the zeolite.
Claim 13
Dependent Claim
77 words
A process for the production of an antibacterial fiber article, characterized by comprising steps of shaping the fiber material as claimed in any one of claims 1 to 11 into a form of the fiber article, heating the shaped article at temperatures above the melting point of the low-melting component of the conjugated fibers and below the melting point of the high-melting component, and cooling the article to temperatures below the melting point of the low-melting component.
Claim 14
Dependent Claim
46 words
The antibacterial fiber article as produced in claim 12, wherein the fiber article is a sanitary material, ground fabric, interior material, floorcloth or carpet, furniture cloth, bedcloth, synthetic tatami mat facing, disposable diaper, or tissue, wallpaper or wrapping material manufactured by wet process of paper making.
Claim 15
Dependent Claim
17 words
The antibacterial fiber article as claimed in claim 13, wherein the fiber article is a nonwoven fabric.
References Cited (Backward Citations)
No citation records indexed.
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