Multi-layer arrangement of a tubular net on a support tube,...

A - Human Necessities – 22 – C

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A22C 13/00 (2006.01) A22C 11/00 (2006.01)

Patent

CA 2517091

The invention relates to a method and means which are used to obtain a multi-layer arrangement of a tubular net (6) which is first positioned on a transfer tube (3). According to the invention, a toothed loader (5) is used to slide the net (6) along the outside of the transfer tube (3) to the end thereof, said end comprising a slightly conical end zone (4). When the net (6') reaches said end zone (4), it falls on to the support tube (1) in an arrangement of concentric layers (6'). In this way, the outer layers of the loaded net (6") have a maximum diameter equal to that of the transfer tube (3) while the inner diameter of the loaded net (6"), which corresponds to the outer diameter of the support tube (1) is less than the maximum diameter of the stretched net.

L'invention concerne un procédé et des moyens utilisés pour la disposition en couches multiples d'une enveloppe de forme tubulaire (6) située au préalable sur un tube de transfert (3). Ce procédé consiste à utiliser un chargeur denté (5) pour faire glisser l'enveloppe (6) sur l'extérieur du tube de transfert (3), jusqu'à l'extrémité de ce dernier. Ce tube comprend une zone d'extrémité légèrement conique (4). Lorsque l'enveloppe (6') atteint cette zone, elle tombe sur le tube de support (1) en raison de sa tension élastique. Ainsi, le tube de support (1) se charge avec l'enveloppe de façon à former une disposition en couches concentriques (6'). Les couches extérieures de l'enveloppe chargée (6'') ont un diamètre maximal égal à celui du tube de transfert (3), alors que le diamètre intérieur de l'enveloppe chargée (6''), qui correspond au diamètre extérieur du tube de support (1), est inférieur au diamètre maximal de l'enveloppe lorsqu'elle est tendue.

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