Title:
【発明の名称】化学薬品を貯蔵および輸送するための多層装置
Document Type and Number:
Japanese Patent JP2002541026
Kind Code:
A
Abstract:
The invention relates to a multilayer device for storing and transporting chemicals, especially highly pure, liquid chemicals for the electronics industry. The device is produced from a thermoplastic by co-extrusion. The innermost layer of the device on the contents side is produced form a stabilizer-free HDPE. The invention relates to a method for producing a multilayer device for storing and trans-porting chemicals, especially highly pure, liquid chemicals for the electronics industry, using a multilayer blow extruder with at least one inner extruder and at least one outer extruder. The method has at least the following steps: a) charging the outer extruder with an extrudable polymer or copolymer and the inner extruder with a stabilizer-free HD-PE; b) plasticizing the polymer or copolymer in the outer extruder and the stabilizer-free HD-PE in the inner extruder; c) co-extruding the plasticized polymer or copolymer in the outer extruder and the stabilizer-free HD-PE in the inner extruder into a forming device; d) forming the device for storing and transporting chemicals in the forming device.
Inventors:
Hahn, Hans-Ullrich
Application Number:
JP2000598351A
Publication Date:
December 03, 2002
Filing Date:
February 01, 2000
Export Citation:
Assignee:
Riedel-De Heng Gesellschaft Mito Beschlenktel Haftung
International Classes:
B29C48/09; B29C48/18; B32B27/32; B65D1/00; B65D1/12; B65D65/40; B65D85/84; B29C49/04; B29C49/22; B29K23/00; B29K105/26; B29L22/00; C08L23/06; (IPC1-7): B65D65/40; B29C47/04; B32B27/32; B65D1/09; B65D1/12; B65D85/84
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)