Patent ID: 8956046
Filing Date: 2015-02-17
Classification: B65D,Y10S

Abstract:
1. A bag with a port member comprising: a bag shaped member having an opening; and a port member formed in a periphery of the bag-shaped member using insert molding and attached to the opening so as not to form a gap at a welded portion between the port member and the bag-shaped member; wherein the port member has a tubular insertion portion and a flange portion that is formed in an outer circumference of the tubular insertion portion as a connection portion, wherein the flange portion that is formed at a position that is separated from an end face of the port member, wherein the bag-shaped member is positioned on the innermost circumferential face side of the port member on an inner face of the insertion portion without any obstruction on an inner periphery of the bag-shaped member, and wherein a step portion formed by reducing the diameter of an inner circumferential face of the insertion portion toward the end portion side of the bag-shaped member side is formed along the circumferential direction of the insertion portion, and an end edge of the step portion on the bag-shaped member side and of an end face of the bag-shaped member on the opening side are located on the same position along an extension direction of the port member.