Shanghai Daoqin Plastics Co., Ltd.

        免 spray coating material for injection molding process and mold requirements:

         high gloss high degree, mold using/adopting high light mold, injection molding parameters using/adopting high temperature high pressure 状态;

        矿 material 质/ metal powder add amount high, mold material using/adopting wear resistant loss 材质;

         for/regarding mono gate mold, need according to product dimensions large small selection combined 适 进胶位置 and 胶口形状 and other;

         for/regarding more injection molding product, methods using/adopting 顺序进胶.

        免 spray coating material for product structure design requirements:

         less 孔洞

         less 筋位

        忌 complex structure

         Common spray coating resin, main/primary has ABS, PMMA/ABS, PC/ABS, high gloss ABS and other, this material combined use need surface gloss relatively good product, 但并不 is has product structure can use spray coating material 做, is, especially is for/regarding surface has obvious structure; product has relatively more filament 柱, 卡扣, add strong/high and other; product thick 不均, in 间位置部 separation relatively thin and other.

        三 types type easy generate flow marks, weld lines product structure, 但不限于 above types, complex product structure easy generate this issues. need improvement this issues must is product structure, mold structure, molding technology, material 四方面 meanwhile combined can achieve, therefore spray coating material in product in application, need experience and system solutions can ensure project 顺利进行.

        1.  product appearance has obvious type structure  

         make in process in, in 孔 周边部位 separation rear again combined, in combined generate weld lines issues, for/regarding 普通染 color material 说, weld lines is strip/profile fine small strip/profile, for/regarding spray coating material 说, “视觉 upper ” weld lines color color has 差异, therefore make weld lines more obvious 一, therefore, appearance has obvious type product structure, generally combined use spray coating material injection molding.

        2.  product has relatively more filament 柱, 卡扣, add strong/high and other product structure

         injection molding process in, in to filament 柱部位时, 熔胶会 generate separation 流, separation 熔胶纵 toward filling filament 柱/卡扣 and other structure, separation 熔胶横 toward filling product appearance 面, formed toward flow amount reduce, therefore in 该部位 due to material flow 状态 变化而 generate flow marks issues.

        3.  product thick 不均, in 间位置部 separation decrease thin structure

        充填 process in, versus relatively in decrease thin 部位, flow speed degree obvious fast decrease thin 部位, 两边往 in formed 包覆, therefore in decrease thin 末端部位形 formed combined 线.

         summary:

         although, spray coating has multiple benefits, 但确实 for/regarding this difficult 以处理 product structure, its application property also is versus for 局限, product defect comparison 突出. 不, spray coating product also is widely used in: 冰箱面 sheet/plate, 空调面 sheet/plate, decoration strip/profile, 音箱面 sheet/plate, base/seat, LCD electrical machine sheet/plate, small home appliances outer housing/shell, product packaging and other.