Sealed plastic envelope for packaging e.g. biological product, has flap fixed inside envelope around opening, by edges of flap using adhesive/glue joint and covering opening, after removal of strip for ensuring sealed closure of envelope

摘要

The envelope (1) has superposed plastic sheaths, and a sealed closing system closing an opening (9) that provides access to an inner volume of the envelope. The system has an adhesive/glue joint provided with a detachable isolation strip (16) that is accessed through the opening. The joint delimits a surface larger than a surface of the opening for surrounding the opening. A free flap (13) is fixed inside the envelope around the opening, by longitudinal edges of the flap using the joint and covers the opening, after removal of the strip for ensuring sealed closure of the envelope.