Patent · US Expired

Storage head for a blow molding machine

US5256049A · kind A · utility

3Cited by
13References
5Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 30, 1992
Grant dateOct 26, 1993
Priority date
Expiry dateMar 30, 2012

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB29C49/041
  • WIPO fieldOther special machines
  • WIPO sectorMechanical engineering

Abstract

The invention relates to a storage head for a blow moulding machine for discontinuous manufacture of multi-layer co-extruded and blow-moulded hollow bodies made of thermoplastic. To improve the product quality and to increase the throughput, each distributor element is designed as a spiral channel distributor (20) which distributes the individual molten plastic streams uniformly at the periphery. The ejector (14) consists of at least two concentric tubular pieces (42, 44) and the peripherally distributed plastic flows from the ejector (14) through an annular gap (46) into the storage space (16) in the storage head housing (10) below the ejector.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.