Film molding apparatus
AssigneesKabushiki Kaisha Kenwood, Goto Electronic Industrial Co., Ltd.
InventorYoshio Sakamoto
Life of this patent
Estimating the term…
Abstract
A film molding apparatus wherein a film is immersed in a vessel of a film supply unit, the film containing at least 50 weight % swelling agent relative to a polymer constituting the film, and the vessel being filled with soaking liquid which acts so as not to destroy a swelling condition of the film, and a film piece corresponding to one molded product is supplied from the film supply unit to a mold press.
Claims9
A film molding apparatus comprising a film supply vessel filled with soaking liquid for keeping a working film immersed therein in a swelling condition so that the working film contains at least 50 weight % swelling agent relative to a polymer constituting said film;
- a mold press unit for mold-pressing the working film supplied from said vessel;
- a passage for forwarding the working film supplied from said film supply vessel to the mold press unit;
- a cover being arranged to shield said passage;
- and
- a humidifier for supplying a vapor in a space environment within said cover to prevent the working film in a swelled condition from being dried.
A film molding apparatus comprising:
- a film supply vessel filled with soaking liquid for keeping a working film immersed therein in a swelling condition so that the film contains at least 50 weight % swelling agent relative to a polymer constituting the film;
- metal dies for press-molding a working film piece supplied from said vessel and in the swelling condition;
- heating and cooling blocks thermoconductively separated from said metal dies in their normal positions;
- a first drive unit for moving said heating block into thermoconductive contact with the back of said metal dies while said metal dies are press-molding the working film piece to dry and crystalize the working film piece, said heating block being previously heated before being moved;
- and
- a second drive unit for moving said cooling block into thermoconductive contact with the back of said metal dies while said metal dies are press-molding the working film piece but after said heating block has been left from said metal dies, said cooling block being previously cooled before being moved.
A film molding apparatus comprising metal dies, a heater block and a cooling block, said heater block and cooling block being mounted on respective mounting plates and movable by driver units to tightly contact with the back of said metal dies for heating and cooling said metal dies, said apparatus further comprising:
- a floating member located between the mounting plates and the driver unit for holding the mounting plates in a floating state relative to the driver units.
A film molding apparatus for press-molding a working film piece containing swelling agent, the apparatus comprising:
- upper and lower metal dies for press-molding the working film piece;
- drive means for driving said metal dies so that an approaching speed of said metal dies in a pressing operation is slowed down when said metal dies become in contact with the working film piece;
- and
- heating means for heating said metal dies to maintain said metal dies below a predetermined temperature until said metal dies are in contact with the working film piece and then raise the temperature of said metal dies over said predetermined temperature.
Dependencies are inferred from the claim text.