Contaminant Resistant Product Packaging

A method of heating an object that is enclosed within a sealable enclosure, wherein heating of the sealable enclosure with the object sealed therein permits gas generated by the heating to vent out from the sealable enclosure into an ambient region surrounding the sealable enclosure while preventing ambient contaminates in the ambient region from entering into the sealable enclosure, wherein the sealable enclosure is defined by:

• a film layer with a fold formed therein, wherein the fold is defined by a fold line and two upper fold edges;
• a strip of heat sensitive adhesive extending along a length of and is proximate to the two upper fold edges of the fold;
• and
• a micro-perforation portion that is located in the fold of the film layer between the fold line and the strip of heat sensitive adhesive,
• wherein when a temperature of the strip of heat sensitive adhesive is less than a predefined release temperature, the strip of heat sensitive adhesive seals the two upper fold edges together to prevent ambient contaminants from entering into the sealable enclosure via the micro-perforation portion;
• the method comprising:
• heating the sealable enclosure with the object sealed therein,
• wherein gas that is initially generated within the sealable enclosure by the heating is retained within the sealable enclosure,
• wherein in response to the strip of heat sensitive adhesive reaching a predefined release temperature, the strip of heat sensitive adhesive releases so that the fold opens such that the gas vents out through the micro-perforation portion into the surrounding ambient region while preventing ambient contaminates from entering into the sealable enclosure.