公开(公告)号：DE3529870A1

公开(公告)日：1987-02-26

申请号：DE3529870

申请日：1985-08-21

Applicant: BASF AG

Inventor： WIELAND OTMAR ,  LOHRBAECHER VOLKER

IPC: B29C35/16 ,  B29C49/46 ,  B29C49/64 ,  B29C71/00

Abstract: 1. A method for reducing the permeability of blow moldings of thermoplastics, in particular of high molecular weight HDPE, in which a tubular parison is expanded within a blow mold by means of a blow gas and caused to rest against the internal contour of the blow mold, and the blow molding is exposed to the action of a reactive treatment gas, wherein the blow molding is brought into contact with the reactive treatment gas in a cooling mold at a temperature of not less than 110 degrees C at the internal surface of the said molding.

公开(公告)号：DE3669840D1

公开(公告)日：1990-05-03

申请号：DE3669840

申请日：1986-08-12

Applicant: BASF AG

Inventor： WIELAND OTMAR ,  LOHRBAECHER VOLKER

IPC: B29C35/16 ,  B29C49/46 ,  B29C49/64

Abstract: 1. A method for reducing the permeability of blow moldings of thermoplastics, in particular of high molecular weight HDPE, in which a tubular parison is expanded within a blow mold by means of a blow gas and caused to rest against the internal contour of the blow mold, and the blow molding is exposed to the action of a reactive treatment gas, wherein the blow molding is brought into contact with the reactive treatment gas in a cooling mold at a temperature of not less than 110 degrees C at the internal surface of the said molding.

公开(公告)号：ES2001556A6

公开(公告)日：1988-06-01

申请号：ES8601253

申请日：1986-08-21

Applicant: BASF AG

Inventor： WIELAND OTMAR ,  LOHRBAECHER VOLKER

IPC: B29C35/16 ,  B29C49/46 ,  B29C49/64 ,  B29C71/00

Abstract: PROCEDIMIENTO PARA REDUCIR LA PERMEACION DE CUERPOS HUECOS SOPLADOS A PARTIR DE PLASTICOS TERMOPLASTICOS, ESPECIALMENTE POLIETILENO DE ALTA DENSIDAD (HDPE) Y DE ALTO PESO MOLECULAR, EN QUE SE EXPANDE UNA PREFORMA EN FORMA DE MANGA DENTRO DEL MOLDE DE SOPLADO MEDIANTE UN GAS DE SOPLADO, DE MANERA QUE QUEDE AJUSTADO AL CONTORNO INTERIOR DEL MOLDE DE SOPLADO, Y SE SOMETE EL CUERPO HUECO, A CONTINUACION A LA ACCION DE UN GAS REACTIVO DE TRATAMIENTO, CUYO PROCEDIMIENTO ESTA CARACTERIZADO PORQUE EL CUERPO HUECO SE EXPONE A UNA TEMPERATURA DE SU SUPERFICIE INTERIOR DE, COMO MINIMO, 110JC, AL GAS REACTIVO DE TRATAMIENTO EN UN MOLDE POSTENFRIAMIENTO.