Non-woven fiber mat and method for forming same

Details Non-woven fiber mat and method for forming same Non-woven fiber mat and method for forming same

D - Textiles, Paper

04

H

D04H 1/64 (2006.01) B29C 63/04 (2006.01) B32B 5/02 (2006.01) B32B 27/12 (2006.01) D04H 1/46 (2006.01) D04H 1/60 (2006.01) D04H 1/70 (2006.01) D21H 13/24 (2006.01) D21H 13/40 (2006.01) D21H 17/36 (2006.01) D21H 17/37 (2006.01) D21H 17/43 (2006.01) D21H 17/51 (2006.01)

Patent

CA 2247638

The present invention is a non-woven fiber mat suitable for reinforcing resilient sheet floor coverings, such as vinyl floor coverings. The woven fiber mat is in the form of a sheet of reinforcement fibers (14) which at least includes semi-coiled fibers (18) and slightly curved fibers (20). It is desirable for most, if not all, of the reinforcement fibers (14) to be made from glass. However, it may also be desirable for the reinforcement fibers (14) to include glass fibers and synthetic fibers. It may even be possible for the reinforcement fibers (14) to include only non-glass fibers. At least one polymeric binder is used for bonding together the reinforcement fibers (14) so as to make the fiber mat a suitable substrate for reinforcing resilient sheet floor coverings, such as an interlayer for vinyl floor coverings. By using a non-woven fiber mat containing reinforcement fibers (14) that are not completely straight and capable of interlocking with one another, a resilient sheet floor covering made with such a mat can exhibit improved planar compressibility.

La présente invention se rapporte à un mat de fibres non tissé convenant au renforcement de revêtements de sol élastiques en nappe, du type revêtements de sol en vinyle. Ce mat de fibres non tissé prend la forme d'une nappe de fibres de renforcement (14) qui comporte au minimum des fibres (18) à demi spiralées et des fibres légèrement courbes (20). Il est souhaitable que la plupart des fibres de renforcement (14), sinon toutes, soient constituées de verre. Cependant, il peut être également souhaitable que les fibres de renforcement (14) comportent des fibres de verre et des fibres synthétiques. Il serait même possible que les fibres de renforcement (14) ne comprennent que des fibres autres que des fibres de verre. On utilise au moins un liant polymère pour lier entre elles les fibres de renforcement (14) de façon à faire du mat de fibres un substrat approprié au renforcement des revêtements de sol élastiques en nappe, tel qu'une couche intermédiaire pour revêtements de sol en vinyle. L'utilisation d'un mat de fibres non tissé contenant des fibres de renforcement (14) qui ne sont pas entièrement droites et peuvent s'interpénétrer les unes les autres, permet d'améliorer la compressibilité en structure plane d'un revêtement de sol élastique en nappe comportant un tel mat.

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