The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 1982
Filed:
Jul. 01, 1980
Yasuyuki Yamazaki, Iwakuni, JP;
Shingo Emi, Iwakuni, JP;
Susumu Norota, Iwakuni, JP;
Kazuo Takamatu, Iwakuni, JP;
Tomoyoshi Ono, Iwakuni, JP;
Teijin Limited, Osaka, JP;
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.