B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/04 (2006.01) B01D 9/00 (2006.01) B32B 5/26 (2006.01) B32B 27/32 (2006.01) D04H 1/56 (2006.01) D04H 3/16 (2006.01) D04H 5/08 (2006.01) D04H 13/00 (2006.01)
Patent
CA 2346538
A nonwoven fabric with UV stability having a spunbonded fabric layer (2) comprising a base resin selected from the group consisting of polypropylene and polyethylene; combined with melt processable additives; wherein said melt processable additives are a mixture of (i) at least two hindered amine light stabilizers; (ii) a processing aid selected from the group consisting of hydroxyl amines and phosphites; and (iii) a carrier resin selected from the group consisting of polypropylene and polyethylene. Other melt processable additives include pigments which are added to provide the desired color in the resulting fabric layer.
L'invention porte sur un non tissé stable aux UV comportant une couche (2) de filé-lié d'une résine de base choisie parmi des polypropylènes et des polyéthylènes, combinés à des additifs façonnables à l'état fondu et se présentant sous la forme d'un mélange: (i) d'au moins deux stabilisants à la lumière d'amine empêchée; (ii) d'un adjuvant de traitement choisi parmi des hydroxylamines et des phosphites; et (iii) d'une résine porteuse choisie parmi des polypropylènes et des polyéthylènes. On peut ajouter d'autres adjuvants façonnables à l'état fondu dont des pigments pour conférer la couleur voulue à la couche résultante de non tissé.
Bba Nonwovens Simpsonville Inc.
Moffat & Co.
LandOfFree
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