Toshiba Kikai Kabushiki Kaisha

Akinori Ide

Takehiro Yamamoto

Yoshiyuki Sakai

Mitsuoki Hatamoto

Kuniaki Endoh

Tatsuya Yoshikawa

Molten polymers are forced into T dies combined to form a multiple T die, the molten polymers are extruded through the T dies in monolayer. The monolayers extruded through the T dies are superposed and laminated outside the multiple T die while the polymers are in a molten or semi-molten state to form a intermediate molten multilayer. The multiple T die is advanced into a space between an open top half mold and a bottom half mold of a compression mold to deliver the intermediate multilayer onto the bottom half mold. The intermediate multilayer is cut to a predetermined length on the bottom half mold, and is processed for compression molding in the compression mold to form a multilayer article. A molding cycle for molding the multilayer article is carried out automatically at a remarkably improved manufacturing efficiency.

Method of manufacturing a molded multilayer article

Molten polymers are forced into T dies combined to form a multiple T die, the molten polymers are extruded through the T dies as monolayers. The monolayers extruded through the T dies are superposed and laminated outside the multiple T die while the polymers are in a molten or semi-molten state to form a intermediate molten multilayer. The multiple T die is advanced into a space between an open top half mold and a bottom half mold of a compression mold to deliver the intermediate multilayer onto the bottom half mold. The intermediate multilayer is cut to a predetermined length on the bottom half mold, and is processed for compression molding in the compression mold to form a multilayer article. A molding cycle for molding the multilayer article is carried out automatically at a remarkably improved manufacturing efficiency.

An upper die unit ( ) and a lower die unit ( ) are disposed in opposition, with a gap, to a substrate ( ) being conveyed, and provided with coating agent supply flow paths ( ) which have inlet paths ( ) for a coating agent to flow in and delivery ports ( ) for delivering the coating agent to coat the substrate ( ) therewith. An accumulation piece ( ) installed in a flow path part ( ) of each die unit ( ) moves in the direction in which it goes away from the flow path part ( ), drawing in the coating agent, dwelling the delivery of the coating agent from the delivery port ( ), forming a non-coated part (F), and repeats a reciprocating action, repeating a coating and non-coating. An elastic plate ( ) on a way of the coating agent supply flow path ( ) is displaced in accordance with advance/retreat actions of a piston member ( ) caused by a rotation of a cam ( ).

Intermittent coating system and intermittent coating method

A drive transmission apparatus for a twin-screw extruder is provided which transmits a rotational driving force from a single prime mover to a first screw and a second screw disposed in parallel to each other, which comprises a transmission shaft, two idler spur gears attached to the transmission shaft, a pair of mutually parallel idler shafts, two idler helical gears, and a helical gear engaging the two idler helical gears. A meshing adjustment device is incorporated into the design that is capable of adjusting the phase of meshing of the gears and tooth bearing in the gear trains of the drive transmission apparatus without the need to disassemble the components, which is a necessary inconvenience of the prior-art apparatus.

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Fujinomiya, Japan

Akinori Ide