Shanghai Daoqin Plastics Co., Ltd.

　1, material
 
    in plastics processing in, due to type filling 不满, 导致塑 parts outer 形残缺不完整 phenomenon.

    2, material flash

    process in, mold clamping 面缝隙间并留存 in parts upper material.

    3, 熔接痕

    parts surface types 线状痕迹, injection or extrusion in dry material in tool in separation combined, material in interface 处未完 full combined, 彼此不 can is 一体, formed combined 印迹, effect/influence parts appearance quality and force property can.

    4, flow marks

    due to material in mold type in 不适当 flow, 导致塑 parts table/sheet generate year 轮状, 螺旋状 or 云雾状 波形凹凸不平 defect.

    5, surface mixed 浊

    parts surface generate has 空隙 裂缝 and 由此形 formed loss. due to long time or 反复施 add low plastics force property can force 而引起塑 parts external or internal generate cracks phenomenon is force cracking; due to parts in temperature degree lower 经受一定时问 恒定 negative function 而突然完一 full phenomenon is force 破裂; certain thermoplastic property parts degree in relatively high temperature degree lower cracks and 破裂称 is hot force cracking.

    6, pressure 裂

    surface cover/cap resin can lamination plastics relatively outer 面 一层 or reinforcement material in tool has obvious cracks.

    7, 皱裂

    lamination plastics surface generate and obvious separation 开 一 types defect.

    8, 皱折

    parts surface or more 层出现折痕 or appearance defect.

    9, crazing and whitening

    parts surface generate comparison obvious micro fine cracks is crazing, and crazing versus 似 霜状 micro fine cracks is whitening, crazing and whitening is has micro fine cracks. parts in certain types chemical product ring or 处于应 force conditions lower 时, generate ring force crazing.

    10, silver streaks 纹

    parts surface material direction generate 针状银 white generally fine 纹.

    11, strip/profile 纹

    parts surface or internal in strip/profile defect.

    12, 斑纹

    due to color material dispersion or mixed combined defect and other causes formed parts surface generate sheet/slice dark defect.

    13, 桔皮纹

    parts surface generate 如桔皮般凹凸不平 appearance defect.

    14, strip/profile 纹

    in foam plastics in, and its solid has structure difference very large 泡孔层.