Forming screens

B - Operations – Transporting – 26 – F

Patent

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Details

B26F 1/26 (2006.01) A61F 13/15 (2006.01) B29C 51/22 (2006.01) B29C 59/06 (2006.01) B29C 71/00 (2006.01)

Patent

CA 2745035

Composite forming screens comprise a layer of hard rubber with a Shore D hardness of 12-90, preferably 33-90 and most preferably 46-60 and in preferred embodiments, comprise a support layer of plastic or metal bonded to the hard rubber to form a composite. The forming screens may be planar or cylindrical and are provided with a plurality of apertures or through holes and a pattern of fine scale structures. Methods of making the forming screens are also disclosed.

L'invention concerne des écrans de formage composites comprenant une couche de caoutchouc dur avec une dureté Shore D de 12 à 90, de préférence de 33 à 90 et de façon préférée entre toutes de 46 à 60. Dans des modes de réalisation préférés, ces écrans comprennent une couche de support en plastique ou en métal, collée au caoutchouc dur pour former un composite. Les écrans de formage peuvent être plans ou cylindriques, et sont dotés d'une pluralité d'ouvertures ou de trous débouchants et d'un motif de structures de petite taille. L'invention concerne également les procédés de fabrication des écrans de formage.

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