초록 ▼

A barrier spout and cap assembly mounted on a flexible bag or pouch of plastic laminate film having barrier material incorporated therein to prevent the permeation of various gases and especially oxygen. The structures of the spout and its cooperating removable and replaceable cap are such that they

A barrier spout and cap assembly mounted on a flexible bag or pouch of plastic laminate film having barrier material incorporated therein to prevent the permeation of various gases and especially oxygen. The structures of the spout and its cooperating removable and replaceable cap are such that they provide a barrier to gas permeation at the joint between the spout and bag and through the cap. The cap and associated barrier are removeable and replaceable to facilitate filling of the bag.

대표청구항 ▼

A flexible bag formed of a laminate including a gas barrier layer having a spout and cap assembly mounted thereon in association with a filling and dispensing opening, said assembly comprising a tubular spout and a removeable and replaceable sealing cap mounted thereon, said spout having an attachin

A flexible bag formed of a laminate including a gas barrier layer having a spout and cap assembly mounted thereon in association with a filling and dispensing opening, said assembly comprising a tubular spout and a removeable and replaceable sealing cap mounted thereon, said spout having an attaching flange which is heat-sealed to said bag laminate with said flange carrying a gas barrier layer, said cap carrying a transversely-extending gas barrier layer which extends completely across said opening and overlaps said barrier layer on the attaching flange; said spout and cap being plastic, said spout comprising a tubular body with its attaching flange axially-inwardly disposed therein and said cap comprising a tubular body which is inserted into said spout tubular body and which carries its barrier layer at an axially-inwardly disposed position, said spout attaching flange extending radially inwardly and the barrier layer on the cap contacting the outer surface of said radially inwardly-extending flange.