
基本信息:
- 专利标题: 拉伸吹塑方法及容器
- 专利标题(英):Injection stretch blow molding process
- 申请号:CN200980139336.3 申请日:2009-09-21
- 公开(公告)号:CN102164730A 公开(公告)日:2011-08-24
- 发明人: P·J-F·埃泰斯
- 申请人: 宝洁公司
- 申请人地址: 美国俄亥俄州
- 专利权人: 宝洁公司
- 当前专利权人: 宝洁公司
- 当前专利权人地址: 美国俄亥俄州
- 代理机构: 中国专利代理(香港)有限公司
- 代理人: 徐晶; 李炳爱
- 优先权: 08165461.8 2008.09.30 EP
- 国际申请: PCT/US2009/057672 2009.09.21
- 国际公布: WO2010/039475 EN 2010.04.08
- 进入国家日期: 2011-03-29
- 主分类号: B29C49/16
- IPC分类号: B29C49/16 ; B29C49/64 ; B65D1/02 ; B29C49/06 ; B29B11/08 ; B29B11/10 ; B29B11/12 ; B29C35/08
The present invention relates to a process for blow molding a polyethylene container comprising the steps of: a) providing a solid preform made from a polyethylene material having a melt flow index from 0.01 to 10.0 g/10 minutes, wherein the preform comprises a neck region, side walls and a base region, and wherein the side walls between the neck region and the base region have substantially straight and parallel outer walls; b) reheating the preform so that the maximum temperature difference between the hottest and coldest regions of the side walls and the base region of the reheated preform is less than 4 DEG C; c) transferring the reheated preform to a blow mould; d) stretching the preform at a pressure below 10 bars; and e) increasing the pressure within the reheated preform so as to cause the walls of the stretched preform to expand to the shape and dimensions inside the blow mould. A polyethylene container made according to the present invention preferably has a minimum wall thickness of the container of less than 200 micrometers, and a weight to volume ratio of the empty container of less than 50 grams per litre.
公开/授权文献:
- CN102164730B 拉伸吹塑方法及容器 公开/授权日:2015-05-20
IPC结构图谱:
B | 作业;运输 |
--B29 | 塑料的加工;一般处于塑性状态物质的加工 |
----B29C | 塑料的成型或连接;塑性状态物质的一般成型;已成型产品的后处理,如修整 |
------B29C49/00 | 吹塑法,即在模型内将预型件或型坯吹成要求的形状;所用的设备 |
--------B29C49/02 | .吹塑法和预型件或型坯制造结合的 |
----------B29C49/16 | ..使用压力差,如预吹 |