Patents Assigned to Polysheet (Ireland) Limited
  • Method and apparatus for forming an article of pet material
    Patent number: 5614145
    Abstract: A method and apparatus for forming an article from a sheet of PET material of thickness greater than 1 mm comprises heating the PET sheet to a preforming temperature of approximately 110.degree. C. by heaters, and then forming the sheet onto a heated vacuum mold. The sheet is retained in the mold by the vacuum and the surface of the sheet are maintained at a temperature of approximately 160.degree. C. by the mold and the heater, respectively, until the degree of crystallization of the sheet is in the order of 35%.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: March 25, 1997
    Assignee: Polysheet (Ireland) Limited
    Inventor: Pearse O'Kane