Bag body null for sterile bag in box of beverage

摘要

PURPOSE:To obtain a bag body for a germless bag-in-box of beverages, which is easily produced in a low cost. CONSTITUTION:The molten resin is extruded tubularly from a circular die equipped at the front end of an extruder as two upper and lower innermost layer films 13, 13 in superposed two upper and lower PE film laminated layers 2a, 2b, regarding a bag body 1 for a bag-in-box of beverages. And at the same time, germless air is ejected in the tube to swell it and the front and tail ends of the tube are sealed when the tube is rolled up by a winding roll to obtain a germless inflation tube.