Title:
METHOD AND APPARATUS FOR PRODUCING CONTAINER SUCH AS BOTTLE FROM FILM OF THERMOPLASTIC SYNTHETIC MATERIAL
Document Type and Number:
Japanese Patent JP3721222
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To form a container having no thermally bonded flap by simple constitution by arranging a thermal bonding contour line determining the boundary of a pouch portion to the inside of a cavity when strips of a film that form the pouch portion are inserted in a secondary mold, and eliminating the strip parts protruding from the side surface and bottom of the container.
SOLUTION: Strips 3a, 3b are thermally bonded excepting the region in a cavity 11 in a thermal bonding station by closing mold halves 9a, 9b and a pouch portion 12 is formed to the thermally non-bonded part 11. Next, compressed air is injected into the pouch portion 12 by the nozzle of a blow molding head in the thermoforming station succeeding to a cooling station and a preheating station to mold a container 30. The thermally bonded part 17 determining the boundary of the pouch portion 12 is present in the molding cavity in this thermoforming stage. Therefore, a cavity 17a is formed to the thermally bonded part 17 during inflation to receive the thermally bonded part 17 to be substantially removed.
Inventors:
Marco Accorsi
Application Number:
JP34944095A
Publication Date:
November 30, 2005
Filing Date:
December 22, 1995
Export Citation:
Assignee:
TRIMAT S.r.l.
International Classes:
B29C49/00; B29C49/42; B29C49/48; B29C49/64; B29C51/00; B65D1/00; B29C51/10; B29C51/42; B29C65/02; B29L22/00; B29L31/00; (IPC1-7): B29C51/10; B29C51/42; B65D1/09
Domestic Patent References:
| JP3289464A | ||||
| JP4305426A |
Foreign References:
| WO1994008852A1 | ||||
| US3072959 |
Attorney, Agent or Firm:
Tetsuya Ito