Method for externally sizing fibrous materials

Details Method for externally sizing fibrous materials Method for externally sizing fibrous materials

D - Textiles, Paper

21

H

D21H 21/16 (2006.01) D06M 15/11 (2006.01) D06M 15/263 (2006.01) D21H 17/37 (2006.01)

Patent

CA 2239689

Fibrous product is externally sized by applying to the material a basic aqueous dispersion of an interpolymer of an ethylenically unsaturated monomer and an ethylenically unsaturated carboxylic acid comonomer. The preferred dispersions which have lower initial viscosities provide dispersion/starch dilute solutions with higher viscosities and improved external sizing effectiveness. Resulting fibrous products are adequately sized and exhibit excellent printability and strength properties.

On effectue l'encollage extérieur d'un produit fibreux en appliquant au matériau une dispersion aqueuse basique d'un interpolymère d'un monomère éthyléniquement insaturé et d'un comonomère d'acide carboxylique éthyléniquement insaturé. Les dispersions préférées possédant des viscosités initiales inférieures sont des solutions diluées d'une dispersion et d'amidon présentant des viscosités supérieures, ainsi qu'une efficacité améliorée d'encollage extérieur. Les produits fibreux obtenus sont encollés de façon appropriée et présentent d'excellentes qualités pour l'imprimerie et d'excellentes caractéristiques de résistance.

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