Shanghai Daoqin Plastics Co., Ltd.

         issues:

         injection molding products 不完整, process upper how to 克服?

        回答:

        进 material adjustment 不当, material or more material

         add material amount or add material control system as positive 常, injection molding machine or mold or as conditions 限导致 injection cycle 反常, back pressure small or machine inner material density small can can formed material, for/regarding pellets large, more material and crystallization property ratio 容变化 large plastics polyethylene (PE), polypropylene (PP), nylon and other and degree relatively large plastics 如ABS应调 relatively high material amount, material temperature high 时应调 large material amount.

        当 machine 筒端部存 material more 时, injection screw need consumption outer more injection pressure pressure 紧, machine inner ultra- 额囤 material, this large large reduce mold cavity plastics has pressure make products difficult 以充满.

         injection pressure low, injection time short, or screw 退回太早

        熔 melt plastics in low as temperature degree lower degree relatively high, flow property 差, relatively large pressure and speed degree injection. ratio in made ABS color color made parts 时, color agent high temperature resistance property made machine add hot temperature degree, this need ratio usually high injection pressure and long injection time 弥补.

         injection speed degree slow

         injection speed degree for/regarding 一 形状 complex, thick thin large, process/workflow long products, and degree relatively large plastics toughened property ABS and other tool has separation 突出 意义. using/adopting high pressure can products 时, can using/adopting high speed injection can 克服注不满 毛病.

         material temperature low

         machine front temperature degree low, type 腔 熔 material due to mold cooling function make degree upper rise to difficult flow 步, for 远端 充模; machine rear temperature degree low, degree large plastics flow difficult, retardant screw front 移, 结果造 formed pressure table/sheet pressure 足够而实际 upper material in low pressure low speed lower type 腔.

         nozzle temperature degree low can can is solid add material nozzle long time and cold mold dispersion hot amount, or nozzle add hot hot or defect formed material temperature low, can can mold material 通道; if mold belt/tape cold material 井, use nozzle, using/adopting rear add material 程序, nozzle relatively can maintain temperature degree; rigid machine nozzle cold has can use 火焰枪做 outer add hot accelerated nozzle rise temperature.