B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1072
B29C 51/10 (2006.01) B29C 35/02 (2006.01) B29C 51/30 (2006.01) B29C 59/02 (2006.01)
Patent
CA 1283271
PATENT - 9D-HR-16745-Taylor et al VACUUM FORMING PROCESS FOR ARTICLES HAVING HIGH FORMING STRESSES ABSTRACT OF THE INVENTION An improved vacuum forming process for forming a deep drawn plastic article with a flange in an area of high forming stresses wherein a mold mounted on a base forms the shape of the article. A sheet of hot plastic material is placed over the mold and a vacuum is drawn to form the plastic sheet into the shape of the mold to form the article. The improvement is forming a character in the mold portion that forms the flange in the area of the high forming stress, said character having dimensions such that properly heated plastic sheet material will be imprinted with a predetermined clarity during the molding operation. A heated sheet of plastic material is placed over the mold and a vacuum is drawn to draw the plastic material around the mold including the mold portion that forms the flange in an area of high forming stresses. The plastic material is then solidified and removed from the mold. The flange is visually inspected to determine if the imprinted character has the predetermined clarity. If it does, the plastic material was heated to the proper temperature for the molding operation. If it does not, it means that the plastic material was not heated to the proper temperature and the area will be subjected to stress cracking and therefore the article is defective and should be discarded.
545573
Taylor Benson Tucker Jr.
Werkmeister Robert Lee
Company General Electric
Craig Wilson And Company
LandOfFree
Vacuum forming process for articles having high forming... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Vacuum forming process for articles having high forming..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum forming process for articles having high forming... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1227128