US 11,718,002 B2
Method for manufacturing car roller shutter door
Wu Chuan Chuang, Hsinchu (TW); and Shuming Lee, Hsinchu County (TW)
Assigned to DONGGUAN HIROCA AUTOMOTIVE TRIM TECHNOLOGY CO., LTD, Guangdong Province (CN)
Filed by DONGGUAN HIROCA AUTOMOTIVE TRIM TECHNOLOGY CO., LTD, Guangdong Province (CN)
Filed on Jul. 27, 2021, as Appl. No. 17/385,915.
Claims priority of application No. 202010730399.4 (CN), filed on Jul. 27, 2020.
Prior Publication US 2022/0024090 A1, Jan. 27, 2022
Int. Cl. B29C 45/16 (2006.01); B29C 45/14 (2006.01); B29L 31/30 (2006.01)
CPC B29C 45/1618 (2013.01) [B29C 45/14508 (2013.01); B29L 2031/3005 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for manufacturing a car roller shutter door comprising:
Step (1): injection molding a single film piece through a first injection mold, or injection molding a film sheet through a first injection mold, and then cutting the film sheet according to desired specification through a cutting mechanism to form a single film piece;
Step (2): heating the film piece to soften the film piece;
Step (3): subjecting the softened film piece to a vacuum forming and molding processing through a vacuum forming method to mold the softened film piece having a desired shape, wherein a bottom surface of the softened film piece is recessed with a groove;
Step (4): placing the film piece after vacuum forming and molding in a second injection mold, wherein an injection molding machine drives the second injection mold to clamp mold and injects molten rubber into the second injection mold, such that the injected molten rubber and the placed film piece are integrally formed in the second injection mold, such that the bottom surface of the placed film piece is connected with a rubber piece protruding into the groove of the placed film piece to form a roller shutter strip;
Step (5): removing the roller shutter strip after the injection molding machine drives the second injection mold to open mold;
Step (6): providing a flexible substrate, and placing and laminating a required number of roller shutter strips on the flexible substrate in a neat and orderly manner, wherein a side of the rubber piece away from the film piece is laminated to the flexible substrate to form the car roller shutter door.