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。
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。
The structure and material of rolling cutter, the corresponding heat treatment, the edge grinding technology and the machine structure have been improved and renovated.
本机自动化程度高，是制作塑料封底袋、马夹袋的理想制袋机械。
Featuring high automation degree, it is an ideal bag-making machine for plastic bottom sealing bags and waistcoat bags.
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