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10.复合材料外观质量。宽度与厚度符合规定，卷取应平整，松紧程度均匀，无皱褶现象，两边缘端面应平整。
10. The appearance quality of the composite material. The width and thickness should be in accordance with the specification, the taking-up of the film should be smooth, and tightness uniform, wrinkle-free, and the end of two edges should be even.
11.复合材料的透湿性，透气性，避光性，耐磨性，耐折叠性，抗针刺性，卫生性，热封性能等，都与基材的性能和挤出薄膜原材料选用有关。例如，基材中纸、布类的透湿性和透气性很大，铝箔的透湿性和透气性很小，接近于零，而且遮光性好，是复合材料常用的气密性好的基材。
11.The moisture permeability, air permeability, opacity, abrasion resistance, folding resistance, anti-needle punching, hygienic property, heat sealing performance, etc. of the composite material are dependant on the properties of the base material and the raw material of the extruded film. For example, such base materials as paper and cloth have good moisture permeability, air permeability, while aluminum has bad moisture permeability, air permeability, close to zero, and has good opacity, so aluminum is a commonly used air-tight base material in composite material.
12.挤出温度控制
为提高薄膜与基材的粘合强度，挤出复合的塑料薄膜温度要比吹塑膜和平膜的温度更高，一般挤出机温度范围为240～340℃，机头温度范围为300～320℃，具体温度应根据基材品种，挤出薄膜树脂品极和薄膜厚度等因素确定。
提高树脂温度，不仅能提高树脂塑化和混炼效果，还能提高复合材料剥离强度。
12. The control of the extrusion temperature
In order to improve the adhesion strength of the film with the base material, the temperature of extruding plastics film is higher than that of blowing film and flat film. Generally the extruder temperature is the range of 240~340℃,and the crosshead temperature is in the range of 300~320℃,the specific temperatures should be determined based on the type of base material, the grade of the resin for extrusion film, and the film thickness, etc.
To increase the resin temperature can not only improve the plasticizing and compounding effect on the resin, but also increase the peel strength of the composite material

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