Resources Contact Us Home
Method for forming articles by compression moulding

Image Number 17 for United States Patent #7425293.

Method for forming articles of synthetic material by compression moulding, comprising the following operative stages: inserting a first measured quantity of synthetic material in the plastic state into the cavity of a mould comprising a punch with which it defines a first forming chamber for said measured quantity; pressing said measured quantity to obtain a first portion of the article; opening the mould and inserting a second measured quantity into said cavity; closing the mould by repositioning the punch relative to said cavity to define a second forming chamber; pressing said second measured quantity and again opening the mould, then extracting said article from the punch.The method is implemented by a plant comprising a plurality of forming units (3), and at least one device (5', 5'') for feeding in succession at least two measured quantities (100, 201) of synthetic material in the plastic state to each of said forming units (3, 43, 81), each of said forming units comprising an upper half-mould provided with at least one punch (110, 46) and a lower half-mould comprising at least one die (29, 70, 90, 91) provided with a cavity matching said at least one punch (110, 46), means being provided to align said at least one die with said at least one punch in succession and to drive said die along the alignment axis, and means which collaborate with said at least one punch and said at least one die in such a manner as to define at least two different forming chambers.

  Recently Added Patents
Electrical stimulation lead, system, and method
(-)-epigallocatechin gallate derivatives for inhibiting proteasome
Chemically resistant membranes, coatings and films and methods for their preparation
Automatic portable electronic device configuration
Method and apparatus for managing communication services for user endpoint devices
Capacitance sensing
Information distribution system, information distributing method, node, and recording medium
  Randomly Featured Patents
Multiphase electrochemical reduction of CO.sub.2
Electrical connection box
Test head for semiconductor tester
Two piece composite valve seal ring construction
Method for sharing an object between applications
Optical distance measuring apparatus
Medicinal or dental hand instrument
Support for handoffs in high rate packet data systems
Method of compressing halftone image data
Tissue excision device with a modified cutting edge