Mat manufacture

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 43/38 (2006.01) A47L 23/26 (2006.01) B29C 43/12 (2006.01) B29C 43/18 (2006.01) D06N 7/00 (2006.01)

Patent

CA 2230193

The invention provides a process for making a mat particularly a washable dust control mat, having a fabric layer (2) and a rubber backing layer (4) with a border (6) extending beyond the fabric layer (2) using a press which heat- cures the rubber and adheres it to the fabric and employs an inflatable bag (24) to apply pressure by pressing the layers against a heated platen (21), wherein a frame (14) defining the extent of the border (6) is located between the bag and the platen, and wherein the bag applies pressure to the assembled layers including the border portion of the backing layer. The frame (14) can act as a dam for preventing outward movement of the rubber and provide an integral thickened border; in some cases it also provides a guillotine for trimming the rubber during pressing.

L'invention concerne un procédé de fabrication de tapis, en particulier de tapis lavables et dépoussiérables ayant la structure suivante: couche en textile (2) et couche de renforcement en caoutchouc (4) dont la bordure (6) s'étend au-delà de la couche en textile (2). Le procédé consiste à utiliser une presse qui traite à chaud le caoutchouc et le fait adhérer à la matière textile, un sac gonflable (24) servant à comprimer les couches contre une plaque chauffée (21). Entre le sac et la plaque en question se trouve un cadre (14) qui définit l'étendue de la bordure (6), le sac appliquant une pression aux couches assemblées, y compris la portion de bordure de la couche de renforcement. Le cadre (14) tient lieu de régulateur de largeur et empêche le caoutchouc de se répandre à l'extérieur, ce qui permet d'obtenir une bordure intégrée épaissie. Dans certains cas, le système comprend aussi une guillotine qui permet d'égaliser le caoutchouc en cours de pressage.

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