Plastic bag has flat, sealed ends, part of one of these being able to be peeled back to produce two openings of different sizes, one of which is pouring opening and other air inlet

摘要

The plastic bag has flat, sealed ends (6, 7). A part of one of these can be peeled back to produce two openings (19, 20) of different sizes, one of which is a pouring opening and the other an inlet for air.