Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1980-07-01
1982-01-12
Albrecht, Dennis L.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
428246, 428252, 428253, 428256, 428297, 428298, 428299, 428303, 428332, 428340, 428369, 4283166, D04H 303, D04H 314, D04H 316
Patent
active
043105947
ABSTRACT:
A composite sheet structure comprising (A) a nonwoven web composed of (a) continuous filaments of a synthetic resin and (B) a net-like web having intersecting points and being composed of (b) continuous net strands of a mixture consisting of at least two thermoplastic synthetic resins having different melting points, said web (A) and said web (B) being bonded to each other by heating; characterized in that (i) said web (A) has a basis weight of about 2 to about 30 g/m.sup.2, (ii) said web (B) has a basis weight of about 1 to 10 g/m.sup.2, an average net strand diameter of about 1 to about 100 microns, and an average mesh length of up to about 5 mm, and said net strands (b) are composed of at least two resins having melting points differing from each other by at least about 20.degree. C., of which a resin having the lowest melting point has a melting point at least about 20.degree. C. lower than that of said filaments (a) and is present in an amount of about 5 to about 95% by weight based on the weight of said resin mixture, (iii) the amount of said web (A) is about 30 to about 90% by weight based on the total weight of said webs (A) and (B), (iv) said composite sheet structure has a basis weight of about 10 to about 200 g/m.sup.2, and (v) said filaments (a) are partly embraced by said net strands (b) throughout the composite sheet structure.
REFERENCES:
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patent: 3616149 (1971-10-01), Wincklhofer
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patent: 4160059 (1979-07-01), Samejima
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patent: 4234655 (1980-11-01), Kunimune
patent: 4269888 (1981-05-01), Ejima
Emi Shingo
Norota Susumu
Ono Tomoyoshi
Takamatu Kazuo
Yamazaki Yasuyuki
Albrecht Dennis L.
Teijin Limited
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