Shanghai Daoqin Plastics Co., Ltd.

         injection molding mold is mold Common type type 之一, in manufacturing process in,我们常会发现 black spots, or formed injection molding product color 焦化, this is injection molding mold manufacturing Common issues,导致 this type of issues main/primary causes is plastics or add outer absorption agent, anti-static agent and other material inner hot separation understanding, or material inner time long, from separation understanding, 焦化, in 随同熔 material type formed. is this issues 出现,我们 can from below/following large 方面进行 analysis:

        1, machine 台方面:

        (1) due to add hot control system 失控,导致 material hot formed separation understanding 变黑.

        (2) due to screw or material defect make material 卡入而囤积,经受 long time solid add hot formed separation understanding. 应检查 胶头 sleeve/set parts is abrasion loss or is has metal material.

        (3) certain plastics 如ABS in material inner to high hot crosslinked 焦化, in 几乎维持原 pellets 形状情形 lower, difficult melt, by screw pressure rear belt/tape made parts.

        2, mold 方面:

        (1) mold gas 不顺, easy 烧焦, or system dimensions small,剪切 于厉害造 formed 焦化.

        (2)模 inner has 不适当 油 type lubricant, demolding agent.

        3. plastics 方面:

         plastics material more, wet degree large,杂质 more, recycled material more,受污染.

        4, processing 方面:

        (1) pressure large, speed degree high, back pressure large,转 speed fast make material temperature separation understanding.

        (2)应定期清洁 material 筒,清 remove ratio plastics resistant property also additives.