Patent ID: 11945639
Assignee: PONOPACK CO., LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A container structure, comprising a container body (1) and a covering film (2);
wherein the container body (1) is a plastic box, having a housing chamber (11) that includes at least one housing space (111), a top end of the periphery of the housing chamber (11) protrudes outward to form a first abutting face (12), the first abutting face (12) protrudes outward to form a concave groove portion (13), a top end of a periphery of the concave groove portion (13) further protrudes outward to form a second abutting face (14); the first abutting face (12) and the second abutting face (14) both surround the housing chamber (11), with the concave groove portion (13) in between, forming a frame of the container body (1); the first abutting face (12) is an inner ring of the frame, and the second abutting face (14) is an outer ring of the frame; an inner bottom of the concave groove portion (13) has a preset break line (15) configured along the concave groove portion (13), the preset break line (15) is a tear line that can break under an external force, and is configured in a ring, on the other side of the concave groove portion (13), a notch portion (151) without a tear line is configured;
wherein the covering film (2) is a heat-sealing film that covers the housing chamber (11) of the container body (1), a bottom face of the covering film (2) is bonded to the first abutting face (12) and the second abutting face (14) through heat sealing, and does not contact the concave groove portion (13); the covering film (12) is bonded to the second abutting face (14) face to face, and bonded to the first abutting face (12) through dotted sealing, forming an array of micro sealing portions (21), so that a plurality of dotted micro imprints (211) arranged in an array appear on the surface of the covering film (2); after completion of the heat sealing, a dotted bonding between the covering film (2) and the first abutting face (12) is weaker than a facial bonding between the covering film (2) and the second abutting face (14); to open the covering film (2), the user needs to apply a pulling force upon the external edge of the top end of the container body (1), to break the preset break line (15) inside the concave groove portion (13), then pull the covering film (2) upward, to separate the micro imprints (211), so that the covering film (2) is separated from the first abutting face (12), while still bonded with the second abutting face (14), at this point, part of the concave groove portion (13) and the second abutting face (14) will form a separated and independent ring-shaped frame (10); in addition, the notch portion (151) is formed with a connecting portion (20) that enables pivoted rotation of the frame (10), as the covering film (2) is always bonded with the second abutting face (14), a covering plate (30) is maintained on the frame (10) to open and close the housing chamber (11) at any time.