TAMPER-PROOF OVERWRAPPING BODY, AND FORMING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an easily-unsealable tamper-proof wrapping body with reliable tamper-proof effect, and a forming method therefor. SOLUTION: The tamper-proof overwrapping body has a rectangular parallelepiped article 2 to be wrapped, and a wrapping film material 4, and the wrapping film material 4 comprises a barrel winding part 6 comprising a barrel wind and a barrel seal around the barrel of the article 2 and a side fold-in surface 8 for closing both side surfaces thereof. The side fold-in surface 8 is formed by successively folding prismatic ear parts formed of the barrel wind of the wrapping film material 4, and a fin-seal band 28 is formed on the ear parts in a folding-in step. The fin-seal band 28 is formed in a joining part with a peripheral edge part flat at projection ends of the ear parts, and obtained by melting the joining part in a linear adhesive area 40. The side fold-in surface 8 cannot be unsealed unless the fin-seal band 28 is broken.