JP2003095334A - Lid material for package and package container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shrink lid-material and package container easily unsealable and having a high impact-resistance. SOLUTION: The lid material comprises a lid main-body 10 and a shrink member 20. The lid main-body 10 comprises a top wall 11, a peripheral wall 12 suspending from the peripheral edge of the wall 11, and a flange 13 placed at the lower outside-periphery of the wall 12. The shrink member 20 comprises a ring 21, a skirt 22 suspending from the outside periphery of he ring part 21, and a rim 23 placed to the outside periphery of the skirt 22. The top wall 11 and the peripheral wall 12 of the lid main-body 10 are inserted in the ring part 21. The flange 13 of the lid main-body 10 and the flange 33 of a container main-body 30 are pinched by shrinkage of the skirt 22 of the shrink member 20, and closed of the lid main-body 10.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a packaging lid and a packaging container using the same.

[0002]

2. Description of the Related Art A so-called shrink lid, in which a lid is covered so as to cover the outer circumference of an opening of a container body and heat-shrinks to close the outer circumference of the opening to seal the container, is known. Since it greatly increases, we are trying to improve the unsealing property by providing perforations and tabs in the unsealing part.
It is well known that it cannot be opened easily. And
Since a relatively large force is required for opening and the opening line extends toward the center of the lid, the contents may be leaked from the opened portion due to the impact at the time of opening.

[0003]

On the other hand, there is also a method of wrapping the whole packaging container together with a lid in a relatively thin shrink film and heat-shrinking the lid to fix the lid to the container. Since the film covers the entire packaging container in a tensioned state, if an accident such as a collision with a sharp object occurs during handling such as transportation or display, there is a problem that the film is easily broken and becomes a defective product.

Therefore, an object of the present invention is to provide a lid member which is easy to open and has high impact resistance, and a packaging container using the lid member.

[0005]

In order to solve the above problems, according to the present invention, a lid main body having a flange on its outer circumference, and a shrink member having a ring portion corresponding to the flange and a skirt portion hanging from the outer circumference of the ring portion are used for packaging. The lid material was constructed. The lid member includes a top wall, a peripheral wall that hangs from the peripheral edge of the top wall, and a flange provided on the outer periphery of the peripheral wall. Further, it is preferable that the ring portion of the shrink member is provided with a tab projecting inward, and one or two perforations extending from a base portion of the tab in a direction crossing the ring portion. Further, it is preferable that a rim protruding outward is provided on the outer periphery of the lower edge of the skirt portion.

When the shrink member of the packaging lid material as described above is heat-shrinked and attached to the flange of the container body, a packaging container is completed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings. 1, 2, and 3 show an example of the lid member of the present invention. As shown in the figure, the lid member 1 includes a lid body 10 and a ring-shaped shrink member 20 having a relatively narrow width. The lid body 10 includes a top wall 11, a peripheral wall 12 that hangs down from the peripheral edge thereof, and a flat flange 13 provided on the outer periphery of the peripheral wall.
This flange 13 is provided corresponding to the flange of the container body described later. The shrink member 2
Reference numeral 0 indicates an inward flat ring portion 21 corresponding to the flange 13 of the lid body 10, a skirt portion 22 hanging from the peripheral edge thereof, and a rim 2 provided on the outer periphery of the skirt portion 22.
It consists of three. Space 21a surrounded by the ring portion 21
Is formed in a shape and size such that the top wall 11 and the peripheral wall 12 of the lid body 10 are just fitted. Further, the tab 24 projects inward from a part of the inner periphery of the ring portion 21, and the tab 24 is connected to the ring portion 21 from the base portion.
Perforations 25 are provided to facilitate breakage.

The material of the lid body 10 is a synthetic resin film or sheet, a metal or metal oxide vapor-deposited thereon, a metal foil, a paper, or a laminated body of these, and the like. Coloring can be applied. The material of the shrink member 20 is preferably a heat-shrinkable biaxially stretched synthetic resin film, particularly a biaxially stretched styrene resin film, and can be printed or colored like the lid body 10. The planar shape of the lid member 1 is selected according to the shape of the flange portion of the container body. The shape of the container body is arbitrary, such as circular, elliptical, oval, or polygonal. further,
In the illustrated case, the lid main body 10 is of a high lid type in which the top wall 11 is higher than the flange 13, but it may be a flat one in which the top wall 11 is substantially flush with the flange 13. A dome type in which the wall 13 is further raised may be used.

FIG. 4 shows a state in which the lid member 1 is placed in the opening of the container body 30. The container body 30 has a bottom wall 31.
And a peripheral wall 32 rising from the peripheral edge thereof and a flange 33 provided on the outer periphery of the upper end opening of the peripheral edge 32. The flange 13 of the lid body 10 is brought into contact with and mounted on the flange 33. The shrink member 20 may be fitted to the lid body 10 in advance, or may be fitted after the lid body 10 is placed on the container body 30. When passing through the hot air oven in this state, as shown in FIG. 5, the shrink member 20 contracts, and the skirt portion 22 of the shrink member 20 becomes the flange 33 of the container body 30.
The rim 23 comes into close contact with the back surface of the flange 33, and firmly holds the flange 13 of the lid body 10 and the flange 33 of the container body 30. Tab 2 when opening
When 4 is pulled up with a finger, only the shrink member 20 easily breaks along the perforations 25 (FIGS. 1 and 3).
A part of the ring of the ring-shaped shrink member 20 is interrupted and can be easily removed, and the lid body 10 can be removed as it is. In particular, since the shrink member 20 is a separate body from the lid body 10, a thin shrink film can be used, so that the shrink member 20 can be easily broken.

Two substantially parallel perforations 25 extending from the base of the tab 24 are diagonally cut through as shown in FIG. 6 (a), or S-shaped as shown in FIG. 6 (b). You may make a through cut in the shape of a ring, or as shown in the figure,
It does not have to cross 1 completely and may end halfway. In either case, only one perforation 25 is sufficient.

Further, the lid body 10 and the shrink member 20
It is convenient to handle if it is partially adhered by means of an adhesive or fusion.

[0012]

As described above, according to the present invention, since the lid body and the shrink member are separated from each other and only the shrink member is contracted to attach the lid body to the container body, the shrink member having a narrow width is provided. Can be formed of a thin material that is easily broken, and a shrink lid material that can be easily opened is obtained.

Further, since the unsealing tab can be formed so as to project inward of the shrink member, the position of the tab can be easily found and can be easily lifted by hand, and unsealing is further facilitated.

Furthermore, since a relatively thick material having impact resistance can be used for the lid main body, the lid main body can be formed into a dome shape, and depending on the material, a mask is not required at the time of heat shrinkage. There are advantages.

Besides, since only the outer periphery of the lid member is clamped and attached, the impact resistance is high.

[Brief description of drawings]

FIG. 1 is a perspective view showing a lid member of the present invention.

FIG. 2 is a vertical sectional view of a lid member.

FIG. 3 is a plan view of the lid material.

FIG. 4 is a vertical cross-sectional view showing a state in which the lid member is placed on the opening of the container body.

FIG. 5 is a partial vertical cross-sectional view showing a state in which the lid material is heat-shrinked and attached to the container body.

FIG. 6 is a plan view showing deformation of a perforation of a tab.

[Explanation of symbols]

1 lid material 10 Lid body 11 top wall 12 surrounding walls 13 flange 20 Shrink member 21 Ring part 21a space 22 Skirt 23 rim 24 tabs 25 perforations 30 container body 31 bottom wall 32 perimeter wall 33 flange

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E067 BA07A BC07A EA25 EA32                       EB03 EB11 EB27 EE59 FA01                       FC01 GD10                 3E084 AA02 AA12 BA02 CA01 CB03                       CC03 CC08 DA01 DB01 DB02                       DB09 DB11 DC03 FA09 FD09                       GB08 GB17

Claims (5)

[Claims] 1. A packaging lid member comprising a lid main body having a flange on the outer periphery, a shrink member having a ring portion corresponding to the flange and a skirt portion hanging from the outer periphery of the ring portion. 2. The packaging lid material according to claim 1, wherein the lid material comprises a top wall, a peripheral wall hanging down from a peripheral edge of the top wall, and a flange provided on an outer periphery of the peripheral wall. 3. The ring portion of the shrink member is provided with a tab projecting inward, and one or two perforations extending from a base portion of the tab in a direction traversing the ring portion are provided. The lid material for packaging according to 1 or 2. 4. The packaging lid material according to claim 1, wherein a rim protruding outward is provided on an outer periphery of a lower end of the skirt portion. 5. A packaging container in which the packaging lid member according to any one of claims 1 to 4 is placed on a flange of a container body and a shrink member is heat-shrinked and attached.