Buckles – buttons – clasps – etc. – Including readily dissociable fastener having numerous,... – Having opposed structure formed from distinct filaments of...
Reexamination Certificate
2000-03-24
2001-12-25
Sandy, Robert J. (Department: 3626)
Buckles, buttons, clasps, etc.
Including readily dissociable fastener having numerous,...
Having opposed structure formed from distinct filaments of...
C024S445000, C024S451000
Reexamination Certificate
active
06332250
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a mechanical fastener comprising a loop member for garments such as disposable diapers, incontinence garments and the like.
Japanese Patent Application Disclosure No. 1997-317 describes a female tape comprising a web substantially made of heat-sealable conjugated fibers, the web being formed with sealing zones so that one surface of the web may be densified and the other surface may be formed with a plurality of loop elements.
The female tape described in this Japanese Patent Application Disclosure No. 1997-317 adopts heat-sealable staple fibers of eccentric core-sheath type having a length of 64 mm as the fibers constituting the web. With this construction, the fibers having their ends out of the sealing zones may readily fall off and cause napping in such region. As a result, the hook member may be easily separated from the loop member.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a mechanical fastener comprising a loop member practically free from falling off of fibers and enabling a hook member to be reliably anchored on the loop member.
According to this invention, a fastener is provided which comprises a loop member that is adapted to be releasably engaged with a hook member.
The loop member comprises a base sheet and a plurality of continuous filaments extending on one surface of the base sheet parallel one to another in one direction and the filaments are bonded to the base sheet along at least a pair of bonding zones extending transversely of the filaments to form a plurality of loop elements extending between the pair of bonding zones.
According to one preferred embodiment of this invention, the loop elements are formed by the filaments rounding out above the base sheet between pair of bonding zones.
According to another embodiment of this invention, the loop elements are bonded to the base sheet along at least a pair of bonding zones extending parallel to the filaments.
According to still another embodiment of this invention, the base sheet is divided at least in two sections so that the filaments lying in one of the two sections extend so as to intersect the filaments lying in the other section.
According to further another embodiment of this invention, each of the filaments has a length of 1-30 mm as measured between the bonding zones.
According to an additional embodiment of this invention, the filaments has a fineness of 0.5-60.0 deniers and a basis weight of 20-150 g/m
2
.
According to still additional embodiment of this invention, each of the bonding zones has a width of 0.5-5.0 mm.
According to further additional embodiment of this invention, the filaments are obtained by deregistering a continuous filament two.
REFERENCES:
patent: 3505155 (1970-04-01), Balch et al.
patent: 4991362 (1991-02-01), Heyer et al.
patent: 5032122 (1991-07-01), Noel et al.
patent: 5256231 (1993-10-01), Gorman et al.
patent: 5326612 (1994-07-01), Goulait
patent: 5611791 (1997-03-01), Gorman et al.
patent: 5615460 (1997-04-01), Weirich et al.
patent: 5699593 (1997-12-01), Jackson
patent: 5763041 (1998-06-01), Leak et al.
patent: 5997981 (1999-12-01), McCormack et al.
patent: 6096667 (2000-08-01), Rhode
patent: 6202260 (2001-03-01), Clune et al.
patent: 0 341 993 (1989-11-01), None
patent: A-9-317 (1997-01-01), None
Copy of European Search Report dated Jul. 17, 2001.
Baba Toshimitsu
Igaue Takamitsu
Baker & Daniels
Sandy Robert J.
Uni-Charm Corporation
LandOfFree
Mechanical fastener does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mechanical fastener, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mechanical fastener will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2581729