Mould name: P - 201 packing paper tube（paper tube body，top cap，bottom cap and the extrusion nozzle）.
1：模具名称：P-201包装用纸管（纸管本体，上盖，下盖，挤出嘴）。
The production method includes the processes of arraying filament, compound extrusion, cooling and sizing, drying, marking traction as well as taking in and packing.
其生产工艺包括排丝、挤压复合、冷却定型、干燥、标识牵引以及收卷包装的过程。
In order to solve the problem concerning the contact-sealing theory for the common packing element, the design theory of "complete anti-extrusion" is put forward.
针对普通胶筒密封遵循接触式密封理论所存在的问题，提出了封隔器胶筒“完全防突”的设计理论。
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