The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 1985
Filed:
Feb. 17, 1983
Tetra Pak Developpement S.A., Pully, CH;
Abstract
An apparatus is described for moulding a plastics component onto a length of flexible web material, particularly a paper tube coated with thermoplastic synthetic material, the apparatus comprising a complete injection unit (5), a nozzle (26), an injecting head portion (12), external mould portions (11,11') and a core (14) which can be moved relative to these. As a means of increasing the output of the apparatus given a continuous supply of the web material, the invention provides that the core (14) is arranged on the end of a mandrel (23) which carries the length of material (35) with it and which is part of a rotatable mandrel wheel driven in cadence about its drive shaft (3), with its mandrel (23) projecting radially in one plane, that the external mould portion (11, 11') has at least two mould portions (11, 11') which can be moved apart and together laterally of the mandrel (23) to free the circular path of the mandrel (23), and that the mould portions can be held together by bringing them into positive and frictional engagement with a movable head plate (12) at the nozzle side.