Thermoplastic synthetic resin band and method for producing...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 63/10 (2006.01) B29C 59/04 (2006.01)

Patent

CA 2534764

A method for producing a thermoplastic synthetic resin band (1) is disclosed wherein the front and back surfaces of a thermoplastic synthetic resin base (10) are provided with a number of mutually obliquely crossing parallel ridges (1a) of a given width and a number of diamond-shaped recesses (1b) having a given area defined by the parallel ridges (1a) by passing the thermoplastic synthetic resin base (10) between a pair of embossing rolls (2, 2) whose peripheral surfaces are provided with mutually obliquely crossing parallel grooves (2a) of a given width and a number of diamond-shaped raised sections (2b) defined by the parallel grooves (2a). In this connection, there are used such embossing rolls (2, 2) wherein the grooves (2a) are so formed as to have a peripheral crossing angle of 15-30 degrees without changing the width of the grooves (2a) or the area of the raised sections (2b). With this method, there can be obtained a thermoplastic synthetic resin band (1) in which the longitudinal crossing angle (a) of the ridges (1a) is 15-30 degrees.

L'invention concerne un procédé de production d'une bande de résine synthétique thermoplastique (1) dans lequel les surfaces frontale et arrière d'une base de résine synthétique thermoplastique (10) sont dotées d'ensembles parallèles d'arêtes obliques se rejoignant (1a) et de plusieurs évidements en forme de losange (1a) possédant une surface donnée définie par l'ensemble parallèle d'arêtes (1a). Pour ce faire on fait passer la base de résine synthétique thermoplastique (10) entre une paire de rouleaux gaufreurs (2, 2) dont les surfaces périphériques sont dotées d'ensembles parallèles de rainures obliques se croisant (2a) possédant une largeur donnée et plusieurs parties saillantes biconiques (2b) définies par les rainures (2a). Dans ces rouleaux gaufreurs (2, 2), les rainures (2a) sont formées de manière qu'un angle d'intersection périphérique de 15-30 degrés soit obtenu sans que cela change la largeur des rainures (2a) ou la surface des parties saillantes (2b). Ce procédé permet d'obtenir une bande de résine synthétique thermoplastique (1) dans laquelle l'angle d'intersection longitudinal (a) des arêtes (1a) est de 15-30 degrés.

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