D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/36 (2006.01) B65D 65/42 (2006.01) D21H 21/52 (2006.01) D21H 27/10 (2006.01)
Patent
CA 2291050
The present invention relates to method of forming a transparent and gas- permeability decreasing coating by virtue of applying a coating containing at least one polymer dispersion on a sheet of paper, board or similar cellulosic fiber based web in at least one coating step. The method according to the invention is based on the use of a polymer dispersion containing extremely pure talc particles having a degree of purity of 90-100 % and a particle size of 90 % smaller than 40 µm.
Cette invention se rapporte à un procédé permettant de former un revêtement transparent abaissant la perméabilité aux gaz, grâce à l'application d'un revêtement contenant au moins une dispersion polymère sur une feuille de papier ou de carton ou sur une bande similaire à base de fibres cellulosiques, en une étape de revêtement au moins. Ce procédé se fonde sur l'utilisation d'une dispersion polymère contenant des particules de talc extrêmement pures ayant un degré de pureté compris entre 90 et 100 % et une taille particulaire de 90 % inférieure à 40 mu m.
Carne Tom
Nurmi Kari
Santamaki Kimmo
Basf Specialty Chemicals Holding Gmbh
Mccarthy Tetrault Llp
Raisio Chemicals Oy
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