VINYL ENVELOPE WHICH A STICKER TYPE CHECK VALVE IS INSTALLED CAPABLE OF ENHANCING THE SEALING EFFICIENCY OF VINYL ENVELOP BY CLOSING THE VINYL ENVELOP DUALLY

摘要

PURPOSE: A sticker type check valve can be used several times as closing the penetration hole of the vinyl envelop by enabling a check valve to be elastically transformed not miniature transformed.;CONSTITUTION: A vinyl envelop which a sticker type check valve is mounted comprised of a envelop(100), a check valve, a base(400), and a adhesive sheet(450). The vinyl envelop has a opening on one side and has a penetration hole on the upper side. The check valve is combined by adhesive on the upper side of the vinyl envelop and opens and closes the penetration hole. The check valve is comprised of cover member(210), and a opening member(220). The cover member is comprised of the thin synthetic resin film and is attached to the upper side of the vinyl envelope, and forms the pressurized bending unit(211) projected convexly as a dome shape to the opposite direction of the vinyl envelope.;COPYRIGHT KIPO 2011