JPH0728867U - Heat shrinkable lid - Google Patents

Abstract

(57) [Summary] [Purpose] It is difficult to damage by normal handling both before and after heat shrinkage, and the opening can be easily identified.
Moreover, it is to provide a heat-shrinkable lid that can be easily opened. [Structure] A tab 5 is provided on a skirt portion 3 provided on the periphery of the top wall 2, and a slit 4 is provided corresponding to the tab 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a heat-shrinkable lid (hereinafter referred to as a shrink lid).

[0002]

[Prior art]

 To attach the lid to the packaging container, there is a method of fitting the lid to the container or fixing it by heat sealing, for example, by utilizing the elasticity of the material.

Further, there is also a method in which the lid is heat-shrinked and fixed to the container by utilizing the heat shrinkability of the stretched sheet or the stretched film. This method has an advantage that the lid can be easily attached and firmly attached.

[0004]

[Challenges of device]

 However, since such a shrink lid is attached around the opening of the container by contraction of the synthetic resin, it is very difficult to remove it as it is, and a method such as cutting with scissors is required.

Therefore, notches or tabs are provided in the periphery of the lid in advance, but in the former case, the lid may be damaged during handling before heat shrinkage, or cracks may occur from the notch even after heat shrinkage. However, the latter may be deformed by heat shrinkage and may be difficult to pinch with a finger due to tearing.

Therefore, an object of the present invention is to provide a shrinkable lid that is not easily damaged by normal handling before and after heat shrinkage, can be easily opened, and has an easily opened opening. Is.

[0007]

[Means for solving the problem]

 In order to solve the above-mentioned problems, in the present invention, one or more tabs are provided on the skirt portion provided on the periphery of the part that defines the top wall, and a slit is provided on the tab or the skirt portion corresponding to the tab. The structure was adopted.

[0008]

[Action]

 When the skirt of the lid is heat-shrunk, the flange of the container body is held between the top wall of the lid and the skirt. At the same time, the slit provided in the skirt or tab is slightly shrunk to form a hole, and since the tab exists corresponding to this hole, pulling the tab applies force to the hole, The part is easily cracked and easily torn, and by providing two or more slits, the torn pieces become strips and are easier to open.

[0009]

【Example】

 As shown in FIG. 1, a shrink lid 1 of the present invention is formed by molding a heat-shrinkable synthetic resin film or sheet, and has a top wall 2 and a skirt portion 3 hanging from the outer periphery thereof, and a transverse direction of the skirt portion 3. And a tab 5 provided corresponding to the slit 4.

A plurality of slits 4 and tabs 5 may be provided on the entire circumference of the skirt portion 3, but may be provided at one place.

When a plurality of slits 4 are provided, it is preferable that the slits 4 extend in parallel from the vicinity of the connecting end portion 6 between the tab 5 and the skirt portion 3.

The shrink lid 1 may have any shape such as a round shape or a polygonal shape.

Further, the top wall 2 may be provided with a bulging portion 7 as shown in FIG. 2, or may be provided with an uneven portion, a rib or the like (not shown).

As shown in FIG. 3, a slit 4 may be provided in the tab 5 on the outer circumference of the skirt portion 3.

Of course, the slit 4 may extend over the tab 5 and the skirt portion 3.

As shown in FIG. 4, the slit 4 may have an angle of 0 to 180 °.

As shown in FIG. 5, the skirt portion 3 a may be flush with the portion defining the top wall 2. In this case, the lid 1 is flat as a whole. The slit 4 is provided on the skirt portion 3a or the tab 5.

In any of the above-described FIGS. 1 to 5, it is important that the slit 4 does not reach the top wall 2.

As shown in FIG. 6, when the flange 12 provided on the periphery of the opening 11 of the container body 10 is covered with the shrink lid 1 as described above and heated, as shown in FIG. The skirt portion 3 is fixed by being inserted into the flange 12. At this time, as shown in FIG. 8, the slit 4 is in a state where there is a hole 4a near the peripheral edge of the skirt portion 3 due to thermal contraction, and the tab 5 is formed corresponding to this hole 4a. Therefore, the portion can be easily specified, and by pulling the tab 5, the portion can be easily broken.

When the tab 5 is provided with the slit 4 as shown in FIG. 3, the tab 5 is split into two from the slit 4, and each tab piece is pulled to break from the skirt portion 3. To do.

[0021]

【effect】

 According to this invention, since the slit is provided on the skirt portion or the tab of the shrink lid as described above, the heat shrinkage of the lid causes the slit to shrink, and the outer peripheral edge of the skirt portion has a hole. Then, by pulling the tab corresponding to this hole, the portion can be easily broken.

Further, the same effect as described above can be obtained by providing a slit on the tab on the peripheral edge of the skirt portion.

Further, since the skirt portion or the tab is simply provided with slits or holes, the lid is not damaged even before or after thermal contraction even if it receives some impact.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a shrink lid of the present invention.

FIG. 2 is a perspective view showing another example of the shrink lid.

FIG. 3 is a perspective view showing still another example of the shrink lid.

FIG. 4 is a front view showing various angles of the slit.

FIG. 5 is a perspective view showing another example of the shrink lid.

FIG. 6 is a cross-sectional view showing a state in which the container body is covered with a shrink lid.

FIG. 7 is a cross-sectional view showing a state in which the shrink lid is heat-shrinked.

FIG. 8 is a front view showing a state in which a slit is thermally contracted.

[Explanation of symbols]

 1 Shrink Lid 2 Top Wall 3, 3a Skirt Part 4 Slit 4a Hole 5 Tab 6 Tab Connection End 10 Container Body 11 Opening 12 Flange

Claims (1)

[Scope of utility model registration request] 1. A heat-shrinkable lid characterized in that one or more tabs are provided on a skirt portion provided on a peripheral edge of a portion defining a top wall, and a slit is provided on the tab or the skirt portion corresponding to the tab. .