Plastic sheet with bending grid line, grid line knife used for plastic sheet and packaging container

Abstract

The invention provides a plastic sheet with a bending grid line, a grid line knife used for the plastic sheet and a packaging container. According to the invention, the rebound resilience of the plastic sheet, which is bent along the bending grid line, is not reduced, and the plastic sheet with the bending grid line having good bending performance and bending intensity can be obtained. The bending grid line is attached to the plastic sheet via the grid line knife, and the grid line knife is formed by arranging a concave knife part on a top surface at the front end. The concave knife part is extended along a direction, which tilts a specific angle toward the attachment direction of the bending grid line, and a convex part of the bending grid line is protruded from the surface of a bottom part of a bending section, and is extended and arranged along the direction, which tilts a specific angle toward the attachment direction of the bending grid line.

Description

technical field [0001] The invention relates to a plastic sheet with a ruled line and a ruled line knife. The sheet is bent along the ruled line attached to the surface, whereby the The plastic sheet with the bent grid line is assembled into a packaging container for display and sales, and the grid line cutter is used to attach the grid line to the sheet. Background technique [0002] A packaging container in which a transparent plastic sheet is bent and assembled into a box shape is used as a container for storing cosmetics, daily necessities, and the like, and for displaying and selling them. [0003] The surface of the plastic sheet assembled into a box-shaped container is attached and formed with bent ruled lines, but in the following cases, that is, in a substantially V-shaped cross section corresponding roughly to the tip of a ruled knife with an acute angle, in the The bending ruled lines are formed deep in the thickness direction of the plastic sheet, and when the p...

AI Technical Summary

Problems solved by technology

[0009] In such a case, if the plastic sheet is stored in a state of being folded along the folding lines before being assembled into a packaging container, it is difficult to carry out the work of three-dimensionally folding the plastic sheet folded into a flat shape. In addition, if external force is applied to the packaging container assembled into a box shape and the packaging container is deformed, it is difficult to return to the original shape.

In addition, the durability of the bent portion of the plastic sheet 100 with the bending ruled lines 101 is low, and if the plastic sheet 100 is repeatedly assembled and unfolded, cracks are likely to occur along the bending ruled lines 101.

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