DE6945343U - Metal-coated writing tubes made of plastic - Google Patents

Description

Hanover, November 14, 1969 Administration Ht / Bg

Metal-coated writing tubes made of plastic

Writing tube, e.g. B. for Tusehe writers , have always been made of metal tubes. Ed steels were used. Recently, however, proposals have been made to increase the abrasion resistance and thus the service life of writing tubes made of steel and to extend their service life by providing their writing tips with hard metal pulls or by hardening the steels used in a known manner or the Writing tubes made entirely of hard metals.

It has now been shown that all of these proposals have the disadvantage, right to use cumbersome and expensive manufacturing processes or expensive materials. The innovation it has therefore set itself the task of producing writing tubes with very high abrasion resistance, to produce very good and consistent writing properties and a very long service life using relatively cheap raw materials and manufacturing processes.

The innovation consists in the fact that a writing tube consists of plastic and completely or partially coated with a suitable metal or a suitable metal alloy is. Suitable metals in this case are, in particular, chromium and tungsten and their

Alloys. The plastic tube is coated with these metals using one of the vapor deposition processes known per se.

The attached drawing shows such a writing tube after the innovation in section. The tube 1 is made of plastic and is in its front part 2 with a thin abrasion-resistant metal layer 3 over

pulled.

Claims (1)

Hanover, November 14, 1969 \ Verwaltung Ht / Bg Claim to protection Writing tube for ink and ink pens, characterized, A thin coating of chromium, tungsten or an alloy of these metals was provided on the writing tube made of plastic entirely or at its front end by means of a known application process.