Substrate based on a nonwoven sheet made of chemical textile
First Claim
1. A substrate based on a nonwoven sheet for a flat article, with good dimensional stability in all the conditions of production, subsequent treatments and use, comprising a nonwoven sheet of synthetic textile material in the form of fibres or of continuous filaments, said sheet having a weight of between 20 and 500 g/m2 and, bonded thereto, high modulus reinforcing threads exhibiting a Young'"'"'s modulus of more than 20 GPa arranged parallel to each other in the lengthwise direction of the nonwoven sheet, the quantity of reinforcing threads being such that, when the substrate is subjected to tensile forces in the lengthwise direction at 180°
- C., the breaking stress of the reinforcing threads is at least 80 daN per meter of width, and the Young'"'"'s Modulus of the substrate at ambient temperature is not appreciably modified relative to the same modulus, measured in the same conditions, of the nonwoven base sheet without reinforcing threads.
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Accused Products
Abstract
The present invention relates to a substrate based on nonwoven sheet for a flat article.
The substrate 11, with good dimensional stability in all the conditions of production, of subsequent treatments and of use, comprising at least one nonwoven sheet 8 based on chemical textile material in the form of continuous fibres or filaments is characterized in that the said sheet comprises high-modulus reinforcing threads 3 arranged parallel to each other in its lengthwise direction.
Glass threads are preferably employed as reinforcing threads. The reinforcing threads are combined with the nonwoven sheet by chemical bonding or heat-bonding and/or needling.
Use of the support as a sealing membrane reinforcement, primary or secondary substrate for tuft carpeting, reinforcement for floor covering tiling, substrate for laying, substrate for flock, and the like.
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Citations
16 Claims
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1. A substrate based on a nonwoven sheet for a flat article, with good dimensional stability in all the conditions of production, subsequent treatments and use, comprising a nonwoven sheet of synthetic textile material in the form of fibres or of continuous filaments, said sheet having a weight of between 20 and 500 g/m2 and, bonded thereto, high modulus reinforcing threads exhibiting a Young'"'"'s modulus of more than 20 GPa arranged parallel to each other in the lengthwise direction of the nonwoven sheet, the quantity of reinforcing threads being such that, when the substrate is subjected to tensile forces in the lengthwise direction at 180°
- C., the breaking stress of the reinforcing threads is at least 80 daN per meter of width, and the Young'"'"'s Modulus of the substrate at ambient temperature is not appreciably modified relative to the same modulus, measured in the same conditions, of the nonwoven base sheet without reinforcing threads.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification