EP0258015B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Loop fastener portion with thermoplastic resin attaching and anchoring layer
Assignee: 3M Co
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Filing: 1987-08-21
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Granted: 1993-12-08
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Expires: 2007-08-21
Abstract
No abstract record available.
Inventors
- 👤 Ronald L. C/O Minnesota Mining And Ott
- 👤 Susan K. C/O Minnesota Mining And Nestegard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:25
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/02; A; A44; A44B; A44B18/00; A44B18/0003; A44B18/0011; A44B18/0069; A44B18/0073; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/24; Y10T428/24008; Y10T428/24017
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A fastener portion (10) including: a soft flexible sheet-like fibrous structure (12) having first and second major surfaces (16, 20) and a multiplicity of loops (14) along said first surface (16) adapted to be releasably engaged by a mating fastener portion; and a layer (18) of thermoplastic resin adhered to the second major surface (20) of said fibrous structure, said layer (18) of thermoplastic resin anchoring said loops (14) in said fibrous structure (12) and being softenable by the application of heat to afford adhering said fastener portion (10) to a substrate (22), characterized in that said layer (18) of thermoplastic resin is a continuous layer, said fibrous structure (12) is a lofty non-woven fibrous structure with initial low web integrity or internal strength, and said thermoplastic resin (18) provides the fibrous structure with sufficient internal strength and integrity for use.
Claim 2
Dependent Claim
19 words
A structure according to claim 1 wherein said substrate (22) is the polymeric outer layer of a disposable diaper.
Claim 3
Independent Claim
152 words
A method for forming a loop portion for a hook and loop fastener comprising: providing a soft flexible sheet-like fibrous structure (52) comprising a non-woven layer having first and second major surfaces (53, 51) and a multiplicity of loops (14, 33, 43) along its first surface adapted to be releasably engaged by the hook portion of the fastener, which non-woven layer alone has insufficient internal strength to adequately anchor the loops for use as the loop portion of a hook and loop fastener; extruding a layer (50) of thermoplastic resin onto the second major surface (51) of said fibrous structure sufficient to bond together the fibrous structure and to add sufficient internal strength and integrity to the fastener portion and anchoring of the loops to afford use of the loop fastener portion with the hook portion of a hook and loop fastener; and adhering the layer of thermoplastic resin to a substrate.
Claim 4
Dependent Claim
65 words
A method according to claim 3 further including the steps of: allowing the layer of thermoplastic resin to cool after said extruding step and before said adhering step; and said adhering step includes softening the layer of thermoplastic resin by the application of heat and pressing the softened layer of thermoplastic resin (50) against the substrate (70) to adhere the fastener portion to the substrate.
Claim 5
Dependent Claim
17 words
A method according to claim 3 wherein said adhering step is performed simultaneously with said extruding step.
References Cited (Backward Citations)
No citation records indexed.
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