Shanghai Daoqin Plastics Co., Ltd.

        1, di 棍开炼 pellet cutting process

        准备工 as:

         color agent, filling agent separation use 80目筛网 筛, separation add increase agent rear use 三辊研 abrasion machine or abrasion 进行研 abrasion, use. stabilizer, antioxidant and a small amount of filling agent add increase agent in, formed 糊状浆 material, rear use 三辊研 abrasion machine or abrasion abrasion, make material degree small 于0.050mm, rise temperature to 90℃并一直搅拌, use. PVC resin use 60目筛网 筛.

        捏 combined:

         high speed mixed combined machine in 通入0.2MPa 蒸汽进行 add hot, 投入PVC resin, rear slow add abrasion good mixed combined 浆, resin will increase agent basic absorption rear again add filling agent, color agent, material material 呈膨胀 hydrophobic powder 末时卸 material, material temperature in 110℃ left right. full process need 5~10 separation 钟.

        密炼:

        蒸汽 pressure 0.3~0.4MPa, pressure shrink gas pressure 0.5MPa, time 3~5 separation 钟, upper 顶拴抬起次数2~3次, material material formed small block, powder material material.

         di 辊开炼:

        蒸汽 pressure 0.4~0.5MPa, temperature 160~170℃(insulation material temperature degree high)至 material full uniform rear, 以3mm thick degree sheet/slice, material sheet/slice 应塑化 uniform, tough light 洁, material.

         cooling:

         using/adopting 逆流浸没式 water cooling 槽, machine remove material sheet/slice upper viscous water separation.

         pellet cutting:

         using/adopting sheet/plate pellet cutting machine. good cable material long strip/profile, 斜方形 and phenomenon.

         packaging:

        经筛选 magnetic 选, amount rear packaging.

        2, mono screw extrusion machine pelletizing production process

        准备工 as:

         stabilizer, filling agent, color agent separation use 80目筛网 筛, separation add increase agent rear use 三辊研 abrasion machine or abrasion abrasion. amount rear use. increase agent mixed combined uniform rear preheating 90℃待 use; resin use 60目筛网 筛.

        捏 combined:

        投入PVC resin, rear add increase agent sheet/slice 刻, resin will increase agent basic absorption rear, add stabilizer, scratch hot make material temperature rise to 90℃ left right, again add filling agent, color agent, material temperature rise 至110℃时, will material to cooling mixed combined machine in drop temperature 至45~50℃ below/following material.

         extrusion pelletizing:

         extrusion machine (以SJ-120/20 is 例) temperature degree is 80℃, 120℃, 160℃, 170℃, machine 头165℃(increase agent add amount less 时, temperature degree improve/increase 5~10℃ left right); extrusion machine screw speed 10~30转/ separation; machine 头 滤网80目, 120目各一层;风 cold using/adopting pressure 0.07MPa(544mmHg), amount 2250m3/h功 rate 7.5kw 离心式通风 machine.

         packaging: 经筛选 magnetic 选, amount rear packaging.

        3, di screw extrusion pelletizing production process

        准备工 as and combined process mono screw extrusion machine pelletizing process.

         extrusion pelletizing: machine temperature degree 130~150℃, machine temperature degree 140~186℃, machine speed 5~15转/ separation.

         packaging: 经筛选 magnetic 选, amount rear packaging.

        4, di extrusion pelletizing production process

        准备工 as and combined process mono screw extrusion machine pelletizing process.

         extrusion pelletizing: di extrusion machine 由两部 separation formed, 第一阶 is high speed toward di screw mixing/compounding machine, 第二阶 is low speed mono screw extrusion machine, 两者呈垂直 positive 交布置, formed di composite/compounding machine 组; will toward di screw and mono screw advantages combined 互补. di screw strong/high made 输送, high 效塑化 mixing/compounding and dispersion, machine back pressure 回流, high hot; mono screw high pressure extrusion, low speed low 剪切, 同样回避 hot 矛盾. especially combined PVC and other hot property material material processing. di screw processing temperature degree 150~185℃, mono screw temperature degree 130~165℃. using/adopting cold abrasion hot pellet cutting methods, material 经旋风 separation device, 振动筛进入 material 仓.

         packaging: 经筛选 magnetic 选, amount rear packaging.

        PVC cable material production, can according to equipment and conditions active combined and 搭配, key/critical is need ensure formulation 准确, material material mixed combined separation uniform, 塑化良 good. is cable molding also need again hot molding, therefore pelletizing temperature degree can high.

         currently very more cable material production, is 方便省事, abrasion material material types type and amount has decrease/reduce, 甚至不研 abrasion mixed combined use, 往往会造 formed quality issues.