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Plastic sheet with bent grid, grid cutter for plastic sheet and packaging container

A technology for plastic sheets and grid lines, applied in the field of plastic sheets and grid knives, can solve problems such as cracks, low durability of bent parts, and difficulty in restoring shape, and achieve good bending characteristics, good touch, and smoothness. The effect of bending

Inactive Publication Date: 2016-12-21
J FILM CORP J FILM KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Plastic sheet with bent grid, grid cutter for plastic sheet and packaging container
  • Plastic sheet with bent grid, grid cutter for plastic sheet and packaging container
  • Plastic sheet with bent grid, grid cutter for plastic sheet and packaging container

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0103] A plastic sheet 1 with folded ruled lines was formed using a plastic sheet made of polylactic acid resin with a thickness of 1 mm.

[0104] use the Figure 9 to Figure 15 Grid cutter 4 in the shape shown. That is, the ruled line cutter 4 is used, the blade portion 5 of which is formed in a groove shape gradually becoming shallower from the center portion to both ends, and is formed so as to have a smooth curved surface when viewed from the side. For a substantially semicircular border, the height a2 of the knife portion 5 is set to approximately 0.1mm, the width b2 is set to approximately 0.5mm, the distance c2 between knife edges is set to approximately 0.3mm, and the inclination angle e2 is set to approximately 0.1mm. The knife portion 5 is formed by setting an angle of inclination of approximately 15 degrees with respect to the ruled line attaching direction f.

[0105] For the folded ruled lines 2 of the formed plastic sheet 1 with the bent ruled lines, the inclin...

example 2

[0107] Use the same material and plastic sheet of the same thickness as Example 1, and the angle of inclination e2 of the knife portion 5 of the ruled knife 4 is approximately 40 degrees, except that, use the ruled knife 4 under the same conditions as Example 1. A plastic sheet 1 with bent ruled lines is formed.

[0108] For the folded ruled lines 2 of the formed plastic sheet 1 with the bent ruled lines, the inclination angle e1 of the convex portion 3 with respect to the ruled line attaching direction f is approximately 40 degrees.

example 3

[0110] Use the same material and plastic sheet of the same thickness as Example 1, and the angle of inclination e2 of the knife portion 5 of the ruled knife 4 is about 10 degrees, except that, use the ruled knife 4 under the same conditions as Example 1. A plastic sheet 1 with bent ruled lines is formed.

[0111] For the folded ruled lines 2 of the formed plastic sheet 1 with the bent ruled lines, the inclination angle e1 of the convex portion 3 with respect to the ruled line attaching direction f is approximately 10 degrees.

[0112] (Evaluation results)

[0113]About the plastic sheet 1 formed in each example, the feeling when bending along the bending ruled line 2 by hand was evaluated.

[0114] For the plastic sheet 1 of Example 1 and Example 3, the repulsive force of the sheet will not be felt, and the bending can be carried out simply and smoothly along each bending grid line 2 . For the plastic sheet 2 of Example 2, when the bending action is performed, the repulsive ...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C53/06B31B1/25B31B3/26B65D5/44B31B50/25
Inventor 石井诚桥本忠桥本久司
Owner J FILM CORP J FILM KK
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