Honeycomb from controlled porosity paper

Details Honeycomb from controlled porosity paper Honeycomb from controlled porosity paper

D - Textiles, Paper

21

H

D21H 13/00 (2006.01) B31D 3/02 (2006.01) D21H 27/00 (2006.01)

Patent

CA 2669980

This invention relates to an improved high performance honeycomb, methods for making the same, and articles including aerodynamic structures comprising the honeycomb, the honeycomb made with a paper that allows rapid impregnation of the honeycomb by structural resins while retarding excessive impregnation of node-line adhesives during manufacture. The honeycomb comprises a paper having a Gurley porosity of 2 seconds or greater and comprising high modulus fiber and thermoplastic binder having a melt point of from 120° C to 350° C, wherein at least 30 percent by weight of the total amount of thermoplastic material is in the form of discrete film-like particles in the paper, the particles having a film thickness of about 0.1 to 5 micrometers and a minimum dimension perpendicular to that thickness of at least 30 micrometers.

L'invention concerne une structure alvéolaire hautes performances améliorée, des procédés de fabrication de celle-ci et des articles tels que des structures aérodynamiques comportant la structure alvéolaire. Ladite structure alvéolaire est composée d'un papier permettant une imprégnation rapide de la structure alvéolaire par des résines structurelles, tout en retardant une imprégnation excessive par des adhésifs de ligne de noeuds lors de la fabrication. La structure alvéolaire contient un papier présentant une porosité de Gurley de 2 secondes ou plus, comprenant des fibres à module élevé et un liant thermoplastique ayant un point de fusion de 120 °C à 350 °C. Au moins 30 % en poids de la quantité totale d'éléments thermoplastiques sont sous forme de particules de type film discrètes dans le papier, les particules ayant une épaisseur de film de 0,1 à 5 microns et une dimension minimale, perpendiculaire à cette épaisseur, d'au moins 30 microns.

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