JPS5811728Y2 - Easy-to-open shrink packaging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the construction of shrink wraps for cans, bottles and similar articles.

Conventionally, packaging bodies using heat-shrinkable films include a sleeve shrink method, in which the packaged items are tied together in a band with a tube-shaped film, a method in which the entire packaged article is inserted into a bag-shaped film and the entire surface is covered, and a pallet method. There is a method in which the articles to be packaged are accumulated on a tray and a film is bonded to the periphery of the pallet or tray, and in either case, the articles to be packaged are bound together by the tightening effect of the film's heat shrinkage to form a stable package.

However, in order to unpack these packages, the film is generally cut open with a knife or the like or pulled and peeled off, making it necessary to move and organize the items in order to dispose of the bottom film that is no longer needed. In addition, broken pieces of film remain irregularly on the periphery of the tray or pallet, detracting from their aesthetic appearance, which poses problems in terms of unpacking time and display effects after unpacking.

In order to correct these drawbacks of shrink packaging, the present invention accumulates articles in a tray consisting of a bottom and upright walls extending from its four sides, and heats the edges of a pair of opposing upright walls of the tray. In a packaging body in which shrinkable films are bonded together and articles to be packaged are bound by the tightening action of the film due to heat shrinkage.

A cutting mechanism for cutting through the material forming the wall is provided immediately below the joining part of the film to the tray.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows the arrangement of an embodiment of the packaging body according to the present invention - articles M accumulated in a tray T are covered with a heat-shrinkable film F, and a pair of opposing upright walls 1, 1 forming the tray T are shown. At the upper edge and the upper edge near both ends of the other pair of walls 2.20, the film F is bonded using a cleaning agent, pressure, heat fusion, or other means to form bonded parts 3,3. , while tightening the article M onto the tray T by the heat shrinking action of the film F.

Crossing the wall 1.1 immediately below the joints 3, 3,
Cutting mechanisms 4, 4 extending to both side ends of adjacent walls 2, 2 are provided to partition and separate the joint parts 3, 3.

FIG. 2 shows the appearance of the tray T constituting the package of the present invention, in which the upright walls 1.1, 2.2 extend from the four sides of the bottom 5, and the five adjacent walls 1.2, 1.2 are joined. A tray T is constructed by joining each other by means such as pieces.

The cutting mechanisms 4, 4 are arranged parallel to the upper edges of the walls 1, 1, and both ends thereof are connected to points P, P, Q on the upper edges of the adjacent walls 2, 2.
They are each extended to Q with appropriate trajectories.

The structure of the cutting mechanism 4, 4&L An example thereof is shown in Fig. 3, in which two rows of parallel interrupted through cuts 6 are bored along the planned cutting line of the material constituting the wall. 4a is for unpacking by continuously cutting through the through cuts 6.

FIG. 4 shows the state after unpacking, with the cutting mechanisms 4, 4 cut open and the film removed.

In order to manufacture such a package, the cutting mechanism 4.4 is installed in advance in the process of cutting a material such as paperboard into an unfolded state corresponding to the tray T, the tray T is assembled, and the articles M are accumulated on the tray. After that, a heat-shrinkable film F is covered, and the film F is bonded to the upper edge of the upright wall constituting the tray T using an adhesive, pressure, heat fusion, etc. to form the bonded portion 3.3. Then, wrap the package into a film F using a heating furnace or the like.
By heat shrinking and tightening the packaged article M to the tray T by the shrinking action, a packaged body is obtained in which a cutting mechanism 4.4 is provided on the tray T immediately at the first stage of the film F joining portions 3, 3.

To unpack the package, simply cut open the cutting mechanism 4.4 from points P and P to points Q and Q, and the film F and its joints 3 and 3 can be easily removed and opened. No equipment required.

Items can be taken out and displayed immediately.

In addition, the cuts of the cutting mechanism of the 5-tray T are formed in an orderly manner as set, and there are no irregular fragments of film attached to them, making it aesthetically pleasing to display items while still being stored in the ton after unpacking. There is no harm to it.

In addition, since the bonding part of the film is limited to the upper edge of the tray, the lower part of the cutting mechanism has the advantage that it can always be used for designs such as decorations, advertisements, etc., and there is no chance that it will get dirty due to adhesive or film peeling off. Not at all.

Furthermore, the film joints 3, 3 and the wall 2 of the cutting mechanism 4°4
, 2 Regarding the extension to both side edges, if the article is not affected by outside air circulation, it is desirable to make it as short as possible to the extent that the film covers both sides of the article in order to save materials, and it is necessary to isolate the article from outside air circulation. In some cases, the joint 3,3 and the cutting mechanism 4,4 extend all around the upper edge of the tray.

The shrink package according to the present invention not only makes it possible to easily complete the package by bonding the film and heat shrinking the articles accumulated on the tray as described above, but also makes it extremely easy to unpack and eliminate unnecessary packaging materials. There is no need to move and organize the items for processing, and the items can be displayed while still stored in the tray after unpacking.It is easy to take out the items, and the display effect can be maintained without damaging the aesthetic appearance due to casual unpacking. is also helpful.

[Brief explanation of drawings]

The drawings show an embodiment of the packaging body according to the present invention, and FIG. 1 is an overall perspective view showing how the packaging bodies are arranged in a row, FIG. 2 is a perspective view of the array of trays constituting the packaging body, and FIG. A plan view and a sectional view of the material showing the structure of the provided cutting mechanism, FIG.
FIG. 3 is a perspective view showing a state in which the package shown in the figure is unpacked and some of the stored articles are taken out. 1.2...Upright wall, 3...Joint part, 4...Cutting mechanism. 5...Bottom, 6...Through cut, M-...Goods, T
...Tray F...film, P, Q...point.

Claims (1)

[Scope of utility model registration request] Upright walls 1,1°2.2 extending from the bottom 5 and its four sides
It is formed by stacking articles on a tray in which opposing walls 1, 1 are joined to other opposing walls 2, 2, respectively, and tightening the articles to the tray with a heat-shrinkable film. In the packaging body, joint portions 3, 3 of the heat-shrinkable film to the tray are provided at the upper edges of the walls 1, 1 and the upper edges near both side ends of the walls 2, 2, and the joint portions 3. Crossing wall 1.1 immediately below wall 2.
20. An easy-to-open shrink package, characterized in that cutting mechanisms 4, 4 extending to both side ends are provided to partition and separate the joint parts 3, 3.