Method for making self-supporting plastic bottle with textured inner and outer thin side walls

US5827456A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Rainer Bergner · Goldkronach, DE
• Hubert Droessler · Erkrath, DE
• Peter Kittscher · Waldbröl, DE
• Siegfried Konkel · Goldkronach, DE
• Volker Weiss · Langenfeld, DE
• Paul-Otto Weltgen · Hilden, DE

Key dates

• Filing date: Nov 27, 1996
• Grant date: Oct 27, 1998
• Expiry date: Nov 27, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2995/0097
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A plastic bottle, made of polyethylene (PE), polypropylene (PP), or poly(ethylene terephthalate) (PET), blown with a very thin overall wall thickness within the range 0.1 to 0.3 mm, includes a triangular or polygonal cross-section, the bottle being preferably surrounded by a supporting jacket. The bottle can be blown with a uniform wall thickness and adequate strength without the need for reinforcing ribs via walls formed by pressing them against the surface of a blow mold which has been worked at least in some areas by etching, form-cutting or eroding, having features with heights of 0.05 to 0.15 mm.