Fluid component recycling system in a plural component plastics molding machine
US4056122A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1976 |
| Grant date | Nov 1, 1977 |
| Priority date | — |
| Expiry date | Feb 9, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/85954
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system is disclosed for a plural component plastics reaction injection molding machine which provides continuous supply and recycling of each of a plurality of liquid components between a mixing head and separate supply tanks for the respective liquid components. The system is designed to use a portion of the respective recycle conduits of the several components as supply conduits to the head, in parallel with the normal supply conduit to the head, during periods of reaction injection taking place in the mixing head, whereby to permit the employment of smaller diameter conduits in the aforesaid portions of the system without reducing the capacity of the molding system. Further economy is achieved by design of the aforesaid portions of the conduit systems to dispose either the supply or recycle conduit concentrically within the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.