To provide a mouth member useful for applying to the case of constituting a bag made of plastic from a film of gas barrier property.
The member is provided with a plastic tube-like port provided with a base part to be insert-welded between front/rear films constituting the peripheral seal part of a flexible bag main body consisting of the plastic film of gas barrier property and a main body part extended outward from the peripheral seal part. Within the layer of the main body part of the tube-like port, a first intermediate layer 2 of gas barrier property is provided extending nearly the whole range of an axial direction and an axis surrounding direction, and the upper tip of the main body part is hermetically sealed by a sealing part 6 of gas barrier property.
WATANABE KATSUSHI
YOSHIMOCHI TATSUO
AKAMATSU TAMOTSU
UEI KATSUMI
MORI HITOSHI
