Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1992-05-15
1994-11-22
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428172, 428198, 428286, A41D 3102, B32B 514, B32B 526, B32B 704
Patent
active
053667867
ABSTRACT:
There is disclosed a thermally bonded spunbond web of thermoplastic filaments and a nonwoven fabric laminate comprising an internal layer of meltblown thermoplastic microfibers sandwiched between two layers of spunbond thermoplastic filaments. The spunbond web and the spunbond layers of the fabric laminate consist of thermoplastic filaments which are formed from a mixture of a thermoplastic polymer and an effective amount of a nucleating agent. The layers are bonded by thermal spot bonding. In the preferred embodiment, the thermoplastic polymer is polypropylene with a melt-flow rate of at 230 .degree. C. of or greater than 12 grams per ten minutes. Also in the preferred embodiment, the nucleating agent constitutes from about 0.1 to 0.3 percent by weight of the mixture of polypropylene and nucleating agent. The nucleating agents that are useful include dibenzylidene sorbitol, di(methylbenzylidene) sorbitol, bis (p-ethylbenzylidene) sorbitol and hydrophobic, fumed silica having particle sizes up to 1 micron in diameter. The nonwoven laminate is particularly useful in manufacturing work garments and other protective apparel having enhanced durability.
REFERENCES:
patent: 3207739 (1965-09-01), Wales
patent: 4041203 (1977-08-01), Brock et al.
patent: 4281070 (1981-07-01), Sheetz et al.
patent: 4314039 (1982-02-01), Kawai et al.
patent: 4333979 (1982-06-01), Sciaraffa et al.
patent: 4379192 (1983-04-01), Wahlquist et al.
patent: 4461872 (1984-07-01), Su
patent: 4473677 (1984-09-01), Pellegrini et al.
patent: 4514534 (1985-04-01), DiNardo
patent: 4585817 (1986-04-01), Su et al.
patent: 4760113 (1988-07-01), Chiba et al.
patent: 4774277 (1988-09-01), Janac et al.
patent: 4839228 (1989-06-01), Jezic et al.
patent: 4845137 (1989-07-01), Williams et al.
patent: 4874666 (1989-10-01), Kubo et al.
patent: 4948841 (1990-08-01), Kasahara et al.
patent: 4950720 (1990-08-01), Randall, Jr. et al.
patent: 5026778 (1991-06-01), Atsushi
patent: 5039748 (1991-08-01), Wakatsuki et al.
patent: 5043209 (1991-08-01), Boisse et al.
patent: 5057357 (1991-10-01), Winebarger
patent: 5137973 (1992-08-01), Khanna et al.
patent: 5188885 (1993-02-01), Timmons et al.
Connor Linda A.
Maddern Peter
Cannon James C.
Herrick William D.
Kimberly-Clark Corporation
LandOfFree
Garment of durable nonwoven fabric does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Garment of durable nonwoven fabric, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Garment of durable nonwoven fabric will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1990190