The new rolling cutter for the recoiling vest-like plastic bag manufacturing device is developed, the structure, material, heat treatment process and edge grinding techniques are improved.

研制了卷装背心袋式塑料制袋机用新型滚刀，在刀具结构、材料、热处理工艺和刃磨技术等方面进行了全面的改进和更新。

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The work principle of underwater cutter of plastic drainage plate, selection of electrical machinery and saw blade, as well as the spacing device of drainage plate, etc. are introduced.

介绍塑料排水板水下切割机的工作原理、电机选用、锯片选用；排水板的限位装置等。

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Packaging industry: printing rubber plate engraving, plastic plates, double plates, die cutter cutting board.

包装行业：雕刻印刷橡胶板、塑料板、双层板、刀模切刀板等。

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