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PP塑料奶茶杯的注塑成型工艺是怎么样的?

作者: 旭春塑胶 浏览:358 发表时间:2020-07-09

“塑料性能乃注塑技术之本”,熟练掌握各类塑料的工艺性能及性能,是每一位注塑从业者必须要了解的基本专业知识,塑料的性能是调整“注塑工艺条件”的重要依据,也是在剖析注塑过程中产生的质量问题和异常现象时必须要考虑的因素中的一种,下面我们就跟着奶茶杯定做厂家旭春塑胶来一起看下PP塑料奶茶杯的注塑成型工艺是怎么样的?

PPSULIAONAICHABEIYOUCHENGJUBINGXI,YINWEIKANGZHEDUANXINGNENGHAO,YECHENG“BAIZHEJIAO”。PPSULIAONAICHABEISHIYILEIBANTOUMING、BANJINGTIDERESUXINGSULIAO,JUBEIGAOQIANGDU、JUEYUANXINGHAO、XISHUILVDI、REBIANXINGWENDUGAO、MIDUXIAO、JIEJINGDUGAODENGTEZHENG 。GAIXINGTIANCHONGWUYIBANERYANYOUBOLIXIANWEI、KUANGWUTIANLIAO、RESUXINGXIANGJIAODENG。

BUYIYANGDEYONGTUDEPPSULIAONAICHABEIQILIUDONGXINGCHABIEXIANGDUIJIAODA,YIBANLAISHUOCAIYONGDEPPSULIAONAICHABEILIUDONGSULVCHUYUABSYUPCLIMIAN。

1.塑料的处理

CHUNPPSULIAONAICHABEISHIBANTOUMINGDEXIANGYABAISE,NENGGOU RANCHENGGEZHONGYANSE。PPSULIAONAICHABEIDERANSEJIZAIYIBANLAISHUOZHUSUJISHANGZHIKEYIYONGSEMULIAO。ZAIYIXIEJIQISHANGMIANYOUJIAQIANGHUNLIANGONGXIAODEDULISUHUAYUANJIAN,YENENGGOUYONGSEFENRANSEJI。HUWAICAIYONGDEZHIPIN,YIBANLAISHUOCAIYONGUVWENDINGJIHETANHEITIANCHONG。ZAISHENGLIAODECAIYONGBILIBUKEYICHAOGUO15%,YAOBURANHUIYINQIQIANGDUXIAJIANGHEFENJIEBIANSE。PPSULIAONAICHABEIZHUSUJIAGONGQIANYIBANLAISHUOBUXUTEBIEDEGANZAOCHULI。

PP塑料奶茶杯的注塑成型工艺

2.注塑机挑选

DUIZHUSUJIDETIAOXUANBINGMEIYOUTESHUYAOQIU。YINWEIPPSULIAONAICHABEIJUBEIGAOJIEJINGXING。XUCAIYONGZHUSHEYALIJIAOGAOJIKEDUODUANKONGZHIDEDIANNAOZHUSUJI。SUOMOLIYIBANLAISHUOAN3800t/m2LAIQUEDING,ZHUSHELIANG20%-85%JIKE。

3.模具及浇口设计

MOJUWENDU50-90℃,XIANGDUIYUCHICUNYAOQIUJIAOGAODEYONGGAOMOWEN。XINGXINWENDUBIXINGQIANGWENDUDI5℃YISHANG,LIUDAOZHIJING4-7mm,ZHENXINGJIAOKOUZHANGDU1-1.5mm,ZHIJINGKEXIAOZHI0.7mm。BIANXINGJIAOKOUZHANGDUYUEDUANYUEHAO,YUEWEI0.7mm,SHENDUWEIBIHOUDEYIBAN,KUANDUWEIBIHOUDELIANGBEI,BINGSUIMOQIANGNEIDERONGLIUZHANGDUZHUKENTISHENG。MOJUBIXUYAOYOUFEICHANGHAODEPAIQIXING,PAIQIKONGSHEN0.025mm-0.038mm,HOU1.5mm,YAOFANGZHISHOUSUOHEN,JIUYAOYONGDAERYUANDEZHUKOUJIYUANXINGLIUDAO,JIAQIANGJINDEHOUDUYAOXIAO(LIRUSHIBIHOUDE50-60%)。JUNJUPPSULIAONAICHABEIZHIZAODECHANPIN,HOUDUBUKEYICHAOGUO3mm,YAOBURANHUIYOUQIPAO(HOUBIZHIPINZHIKEYIYONGGONGJUPPSULIAONAICHABEI)。

4.熔胶温度

PPSULIAONAICHABEIDERONGDIANWEI160-175℃,FENJIEWENDUWEI350℃,DANZAIZHUSHEJIAGONGSHIWENDUDIAOZHENGBUKEYICHAOGUO275℃,RONGRONGDUANWENDUZUIHAOZAI240℃。

5.注射速度

为减小内应力及变形,应挑选高速注射,但有些等级的PP塑料奶茶杯和模具不适合(产生气泡、气纹)。如刻有花纹的表面产生由浇口扩散的明暗相间条纹,则要用低速注射和较高模温。
        6. 熔胶背压
        可用5bar熔胶背压,色粉料的背压可适当调高。
        7. 注射及保压
        采用较高注射压力(1500-1800bar)和保压压力(约为注射压力的80%)。大概在全行程的95%时转保压,用较长的保压时间。
        8. 制品的后处理
        为防止后结晶产生的收缩变形,制品一般需经热水浸泡处理。

YISHANGJIUSHIGUANYUPPSULIAONAICHABEIDEZHENGGEZHUSUCHENGXINGGONGYIDEJIESHAOLE,DUIYUTADEZHENGGEGONGYIGUOCHENGNISHIBUSHILEJIENI?RUGUONIYOUPPSULIAONAICHABEIDINGZHIFANGMIANXUQIUDE,HUANYINGQIANWANGNAICHABEICHANGJIAXUCHUNSUJIAOGUANWANGJINXINGLEJIE。


相关标签: PP杯定做 , 一次性PP杯 , PP奶茶杯