Lg Chem, Ltd

Chang Kwon Chung

Myung Han Lee

Ki Soo Lee

Yi Young Choi

Bog Ki Hong

Sung Hyun Park

Soon Ho Sun

Hyun Sup Lee

Byeong In Ahn

Chae Gyu Lee

Kyung Hwan Yoon

The present application relates to a method for selecting an injection-molded article and a method for manufacturing an injection-molded article. An injection-molded article having excellent crack stability can be produced using the material selected using the described selection method without having to manufacture test articles through injection molding.

Method for selecting material of injection-molded article and method for manufacturing injection-molded article

The present invention relates to an extrusion die and a method for extruding a sheet using the same, and according to one aspect of the present invention, there is provided an extrusion die comprising a storage part configured to hold a raw material, the storage part defining a first width, a pressure part configured to move the raw material through the storage part, a first die defining a second width less than the first width, such that a flow width of the raw material becomes narrower, a second die in fluid communication with the first die, the second die defining a width that increases from the second width to a third width, such that the flow width of the raw material passing through the first die becomes wider and a flow thickness becomes smaller, and a heating part configured to heat the raw material passing through the second die.

Extrusion die and extrusion method of sheet using the same

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Daejeon, South Korea

Chang Kwon Chung