Exhibits: Plastic Rings, Pvc Cover, Paper Cover, Double Wire.

展品：装订胶圈，装订胶片，皮纹纸，双铁圈。

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Effects of different fillers, different plasticizers on the cover properties of light PVC conveyor belts were studied.

研究了不同填充剂、增塑剂对PVC轻型输送带覆盖胶性能的影响。

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The effect of cover treatment with PVC on the absorptivity, filament strength and surface state of the noil ramie is studied in the paper.

本文研究了PVC包覆处理对苎麻落麻纤维的吸水性、纤维表面状态、纤维单丝强度等的影响。

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