SEALED-STRETCH-SHRINK-PACKAGING METHOD FREE FROM UNSHRINKED PART
PROBLEM TO BE SOLVED: To prevent an unshrinked part from occurring on a heat-shrinkable film resulting in a 'keloidal part' by covering a synthetic resin film over an object to be packaged mounted on a tray, and further by heat-shrinking after hermetically wrapping it with a heat-shrinkabl...
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