Method of forming composite moldings
US5178815A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 12, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Mar 12, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/78
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing composite moldings by executing the following steps (a) to (f) by using an injection molding machine provided with a fixed die having a gate which is opened to a cavity forming surface and a movable die which can come into contact with and out of contact with the fixed die: PA1 (a) step of setting a desired skin material to a predetermined position of the movable die in a state in which the movable die is sufficiently removed from the fixed die; PA1 (b) a first die clamping step in which the movable die is moved toward the fixed die and is stopped at a position where an interval between the movable and fixed dies is equal to a predetermined value of 5 mm or more; PA1 (c) step of injecting a fused resin into a cavity; PA1 (d) a second die clamping step in which the movable die is stopped at a desired last position; PA1 (e) step of cooling for a predetermined time after the second die clamping step; PA1 (f) step of removing the movable die from the fixed die and opening the dies and taking out a product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.