Insulated synthetic resin container and insulated synthetic...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 81/38 (2006.01) A47J 41/00 (2006.01)

Patent

CA 2234171

A heat insulating container of a synthetic resin wherein inner and outer container members (4, 3) of a synthetic resin are joined together in a united state with a hollow space therebetween to form a container of a double walled structure. A gas of a low thermal conductivity is sealed in the hollow space (5) in the container to form a heat insulating layer (6). A gas replacement through hole (7) is made in the central portion of one of the inner and outer container members (4, 3), and a projection (14) which projects toward the wall in which the through hole (7) is made, or the wall opposed to the through hole, and which is adapted to prevent the inner and outer container members from being brought into close contact with each other is provided in the vicinity of the through hole (7). During the evacuation of the hollow space (5) to seal the gas therein, the inner and outer container members (4, 3) are not deformed and brought into contact with each other, efficiently evacuating the hollow space. Thus a container having an excellent heat insulating performance is provided.

L'invention concerne un récipient thermoisolant en résine synthétique dans lequel des éléments de récipient intérieur et extérieur (4, 3) en résine synthétique sont unis de manière à ne former qu'un élément avec un espace creux intermédiaire pour former un récipient à structure à double paroi. Un gaz de faible conductibilité thermique est renfermé hermétiquement dans l'espace creux (5) du récipient, pour former une couche thermoisolante (6). Un orifice (7) de passage destiné au remplacement du gaz est ménagé dans la partie centrale d'un des éléments du récipient intérieur et extérieur(4, 3), et une partie saillante (14) saillante vers la paroi dans laquelle l'orifice de passage (7) est ménagée, ou la paroi opposée à l'orifice de passage, adaptée pour empêcher que les éléments de récipient intérieur et extérieur ne viennent en contact étroit mutuel, est ménagée à proximité de l'orifice de passage (7). Pendant l'évacuation de l'espace creux (5) afin d'y retenir le gaz de façon hermétique, les éléments de récipient intérieur et extérieur (4, 3) ne sont pas déformés ni amenés en contact mutuel, évacuant efficacement l'espace creux. Ainsi l'on obtient un récipient présentant une excellente efficacité thermoisolante.

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