MOISTURE PERMEABLE PACKAGING FILM, BAG FOR MOISTURE PERMEABLE PACKAGING BAG, AND MOISTURE PERMEABLE WRAPPER

摘要

PROBLEM TO BE SOLVED: To provide a moisture permeable packaging film capable of releasing surplus water vapor to surrounding atmosphere, preventing any foreign material from entering through its external part and keeping an outer appearance of stored content, sanitary state, quality maintaining characteristic, productivity and superior cost reduction, and a moisture permeable wrapper not producing any rupture of the bag and showing a rapid discharging of water vapor even if the moisture permeable packaging bag kept at its stored content holding is heated in a micro-wave oven.;SOLUTION: This moisture permeable packaging film 10 is a film where several linear lines of thermoplastic resin 4 are formed in parallel to each other at one side of a moisture permeable base film 2 and it shows a water vapor permeation rate at 40°C, 90%RH is 100 g/m² 24h or more. In addition, the moisture permeable packaging bag is made of this moisture permeable packaging film and formed into a bag-shape where at least three sides are closed with the opening being left in such a way that the thermoplastic resin forming surface may become inside. The moisture permeable packaging member is operated such that a laboratory dish having agar culture medium is stored through the opening part of the moisture permeable packaging bag and the opening part is heat sealed to make a close sealed state.;COPYRIGHT: (C)2007,JPO&INPIT