Process and apparatus for the preparation of crosslinkable rubber mixtures

US8846816B2 · kind B2 · utility

Assignee

• Rhein Chemie Rheinau GmbH · DE

Inventors

• Anno Borkowsky · Gerstungen, DE
• Andreas Schroder · Oettingen, DE
• Hans-Martin Issel · Chiba, JP
• Florian Fischer · Ebersberg, DE
• Reinhard Uphus · Hannover, DE

Key dates

• Filing date: Jun 26, 2009
• Grant date: Sep 30, 2014
• Expiry date: Mar 18, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2421/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process and an apparatus for the preparation of a crosslinkable rubber mixture for vehicle tires, lines, drive belts and other industrial rubber articles, which can be carried out at least semicontinuously.The present invention is based on the discovery that the experiments known from the prior art to carry out the batchwise process usually used at least partly continuously have failed in particular because of the problem that the crosslinking agents have to be mixed rapidly and homogeneously with the base mixture, also referred to as rubber base mixture, without the mixture consisting of the base mixture and the crosslinking agents heating up too strongly. According to the invention, attention was therefore focussed on reliably mixing the base mixture homogeneously with the crosslinking agents and minimizing the mixing time.A first measure for achieving the desired aim consists in first mixing the crosslinking agents with one another before they are mixed with the base mixture.The mixture of crosslinking agents is in particular first packed in a container which is used for feeding the crosslinking agents into a base mixture.