B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 43/02 (2006.01) B29C 43/36 (2006.01) B29C 59/02 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)
Patent
CA 2756724
Provided is a sheet press molding method by which a molded product having a small plate thickness deviation is obtained. Such a sheet press molding method is provided with a process in which a molded product (30) having a recess and protrusion pattern portion (32), to which a recess and protrusion pattern (3) is transferred, is formed by pressurizing a sheet-shaped material (20) including 60 vol.% to 95 vol.% of a filler and a resin composition using a pair of molds (40) having the predetermined recess and protrusion pattern (3) composed of recessed portions (3a, 3b, and 3c) and protrusion portions (23a, 23b, 23c, and 23d) in at least one of a pair of the molds, in which the mold provided with a dummy pattern (24) composed of dummy protrusion portions (24a) that offset the difference between the total volume of the protrusion portions (23a, 23b, 23c, and 23d) formed on the inside (14) and the total volume of the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) and the side surfaces (14b) of the inside (14) and the recessed portions (3a, 3b, and 3c) disposed between the protruding portions (23a, 23b, 23c, and 23d) on the inside (14) is used as a pair of the molds (40).
L'invention divulgue un procédé de moulage à la presse de feuilles par lequel des articles moulés présentant une petite déviation d'épaisseur de feuille peuvent être obtenus. Le procédé comprend une étape de formation d'un article moulé (30) comprenant une partie de motif concave-convexe (32) sur laquelle un motif concave-convexe prédéterminé (3) est transféré, en pressurisant un matériau en forme de feuille (20) qui contient entre 60 % en volume et 95 % en volume d'une charge de remplissage et d'une composition de résine, en utilisant une paire de moules (40) dont au moins un moule comporte le motif concave-convexe (3) comprenant des parties concaves (3a, 3b, 3c) et des parties convexes (23a, 23b, 23c, 23d). Comme paire de moules (40), une paire de moules dans lesquels un faux motif (24) est formé dans la partie intérieure (14) est utilisée, le faux motif comprenant des fausses parties convexes (24a) qui compensent la différence entre le volume total des parties convexes (23a, 23b, 23c, 23d) qui sont formées dans la partie intérieure (14) et la capacité totale des parties concaves (3a, 3b, 3c) disposées entre les parties convexes (23a, 23b, 23c, 23d) et les surfaces latérales (14b) de la partie intérieure (14) et entre les parties convexes (23a, 23b, 23c, 23d).
Ito Yoshinori
Noguchi Masayuki
Utashiro Tomoya
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Showa Denko K.k.
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