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Clamshell (container)
A clamshell is a one-piece container consisting of two halves joined by a hinge area which allows the structure to come together to close. Clamshells are often made of a shaped plastic material, in a way that is similar to a blister pack. The name of the clamshell is taken from the shell of a clam, which it resembles both in form and function.
==Construction==
Clamshell containers can be made of a variety of plastics such as polystyrene, polyester, PVC, foam sheets, etc. The material can by made by thermoforming or can be injection molded into the desired shapes. A single piece of material is used for the top and bottom with a "living hinge" that is integral with the material, rather than added separately.
Folding cartons made of paperboard or molded pulp can also be of a clamshell shape. It can also be made of cellulose fiber such as sugarcane-bagasse, wheatstraw, wood pulp, etc.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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