Shanghai Daoqin Plastics Co., Ltd.

plastics bottle blow molding 时候应 attention/notes plastics bottle outer 形一定 need for 称. decrease/reduce tensile and 部位. another 一 渡处均 using/adopting 圆弧 渡. 　　 　　
1 make plastics bottle thick uniform . 消费者 attention/notes force most in 部位. printing outer table/sheet 应平整, 连续; if liquid plastics bottle has 手柄, 凹槽, add strong/high and other structure, 　　
2 plastics bottle printing 面. design attention/notes can to printing as formed 不便. 　　应 make 标贴面平整. can in plastics bottle outer table/sheet design 一 “ frame 格 ” make 标贴准确定位, 　　
3 plastics bottle outer table/sheet using/adopting 标贴时. generate 移动. plastics bottle in versus for fine 一, 　　
4 改变 plastics bottle outer table/sheet 形状. increase plastics bottle outer table/sheet toward or 凸筋, can improve/increase plastics bottle rigid degree and resistant bending property. toward or add strong/high 筋, can remove plastics bottle in negative lower 偏移, lower or deformation phenomenon.

附录: extrusion blow molding features and versus ratio, extrusion blow molding features is : 
（1） blow molding machine 械（ especially is blow molding mold ） 造价 relatively low,例如 molding same product 时, blow molding machine 械 造价约 is injection molding machine 械 1/3 or 1/2, product production cost relatively low.（2） blow molding in, type is in relatively low pressure lower through extrusion machine molding in low pressure （ more is 0.2～1.0 MPa） lower 吹胀,因而 product residual stress relatively small, resistant tensile, impact, bending and ring and other various property can relatively high, tool has relatively good use property can.而 in injection blow molding in, plastics melt need in high pressure （15～140 MPa） lower through mold runner and gate, this 会导致不匀称 应 force distribution.
（3） blow molding grade plastics （例如PE） molecular weight ratio injection molding grade plastics high more. this blow molding product tool has relatively high impact tough property and very high resistant ring force cracking property can, this for production large amount plastics bottle is separation has 利. 
（4） due to blow molding mold anionic formed,故 through simple adjustment machine 头模口间隙 or extrusion conditions can bottle 体 壁 thick, this for 预先无 method 准确计算 需壁 thick product is very has 利.而 for injection molding, need product thick use need high more. 
（5） blow molding can molding thick very thin product , this product method injection methods molding.
（6） blow molding can molding complex, 不规则且 is overall product . using/adopting injection blow molding 时, need production parts or more parts rear, through 搭扣配 combined, solvent agent bonding or ultra- 声波 welding and other combined in 一起.