JPS583904B2 - Packaging materials and packaging methods - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention eliminates the drawbacks of previous packaging methods for packaging large numbers of medium or small items, and provides a safe, hygienic and attractive way to package various numbers of items. These can be packed into cardboard boxes or stacked together without traditional fillers or cores.

Also gives improved packaging and how to build this.

In summary, the present invention relates to a packaging material for packaging articles comprising a portion having a peripheral edge(s), at least first and second bondable portions and a heat-shrinkable portion, each of which portions having an opposite peripheral portion. The opposing first and second adhesive and heat shrinkable portions, which are foldably connected and overlapped with each other, are comprised of a unidirectionally shrinkable plastic material and are laterally shrunk at opposite ends.

In the preferred embodiment, the peripheral edges are made of reinforced flat plate material and are elongated rectangular cardboard with folds (lines).

The folds are spaced apart to form a bottom surface and are transverse to the length of the cardboard.

The retractable portion is a pair of foil flaps formed between the groups of folds, and the retractable foil flap is secured at one end to the peripheral edge.

The ends of the shrinkable flap are folded over the item and the free ends are overlapped and heat glued.

The flap is contracted over the article to provide at least one further fold parallel to the fold line.

Fold the edge of the cardboard box beyond the crease over the item and heat shrink to adhere the foil.

The packaging of the invention comprises a retaining portion having a peripheral edge.

The shrink/fold section is mounted near and parallel to the opposite end of the retaining section.

The folds are overlapped on the article, glued at their free ends and contracted on the article.

In this example, a varying number of medium-sized or small-sized items can be packaged with inexpensive materials and packed into a cardboard box without fillers.

All items are shipped without filler or core to hold them inside the box.
It remains safe even if the box is turned over.

By using transparent shrink foil, small items will not be lost when unpacking.

However, with conventional packaging methods, when the packed items are removed, a miscount may occur and the items may be thrown out and lost.

This method of packaging involves the steps of placing an item to be packaged on the bottom of a first portion having opposing foldable ends and a heat-shrinkable foil flap (joined to opposing peripheral edges of the bottom); A process of folding the opposing free ends of the material so as to overlap them, a process of gluing the overlapped free ends and causing contraction by heating the shrinkable flap surface, and a process of folding the folded end of the reinforcing flat plate material on the heat-shrinkable flap. Consists of a closing process.

The method of packing and closing the packaging of this invention is to place the item on the bottom of the reinforced flat plate material, then fold the shrinkable foil flap over the item, heat-bond the area where the free ends of the flap overlap, and bond the free end of the foil. The process consists of heating the material to a temperature that allows it to shrink and contact the product, and then closing the flat material, or box.

This method allows for fast and inexpensive packaging of various numbers of medium or small items in a conveyor style.

In the following example, flap bonding is done by blowing hot air out of the package.
Or, since it is done by passing under several nozzles, no manual work is required.

The package can be thermally bonded and shrunk by simply passing it under the described equipment or by other methods.

Shrinkage may be achieved by exposing the foil surface to an infrared light.

In the flat packaging alternative, which consists of rectangular cardboard, reinforced flat boards, and foil flaps, a perforated template or basket is first filled.

This template holds the item well until the free end of the slab is closed during packaging while the flaps adhere and shrink.

After unpacking, this template can be reused. As shown in Figure 1, a cardboard box 1 is assembled from a reinforced flat plate by folding it into a rectangular shape.
The box 1 is provided with a bottom surface 2, a pair of opposing short sides 3, a pair of opposing long sides 4, and a pair of cover flaps 5. Located near the edge 7.

A retractable foil flap 8 is provided between the sides 4 and the bottom 2.

The foil flap is glued or glued, for example, at the location 9 on the side surface.

The foil flaps 8 have a length greater than both sides 4, so that lateral protective flaps 10 are formed.

The flap 10 is sandwiched between the side flaps and the item enters as indicated at 11 (FIG. 2).

After placing as many items as possible in box 1 and arranging them as flatly as possible, fold in foil flap 8 and overlap the edges.
Glue the overlapped parts at 12 points.

The foil flap 8 is then contracted by heating.

Since this heating is performed from outside the box, the item (not shown) is tightly packed.

The foil flap 8 consists of a unidirectionally shrinkable foil, the shrinkage of which takes place in the direction of the side surface 3, so that the article is well wrapped in the direction of the side surface 4 even after the foil shrinks.

As shown in FIG. 3, the cover flaps 5 and 6 of the box 1 are closed and the items are sent.

Items are safely packaged within the box even when the entire item does not fit within the box.

It is also clear that the product packaging is safe even if the box is turned over.

In the example of FIG. 4, the foil flap 8 is a continuous foil sheet 13.

This sheet 13 extends onto the bottom surface 2 of the box 1 and joins at a point 9 on both sides 4 of the box.

The foil sheet 13 and the box 1 are joined together on the bottom surface 2 as well, but also near the bottom edge 7.

In the example shown in Figs. 5 to 8, a longitudinally rectangular cardboard (section) 21 is used as the material for the reinforcing flat plate, and several parallel transverse line folds 2
4 will be provided.

As shown, opposing folds 24, 24 form a bottom surface 22, short side flaps, and a cover flap 23.

A collapsible foil flap 28 is secured near the edge 27 of the bottom surface 22.

The foil flap 28 is wider than the edge so that a protective flap 30 is formed.

Glue the foil flap 28 to the bottom surface 22 at the location indicated by 29.

As can be seen in FIG. 6, an article 31 is placed on the bottom surface 22.

The articles are shown in broken lines and consist of several pieces which are held in place by perforated profiles before closing the foil flap 28 (FIG. 10).

In FIG. 6, foil flap 28 is folded over and its edges are overlapped and glued at point 32 on article 31. In FIG.

The protective flap 30 is sandwiched between a cover flap 23 which extends over the article 31 and folds over the article 31 as shown in FIG.

The flaps 23 are folded and overlapped and bonded to form a package by heating the foil flaps 28 from above at the position shown in FIG. 6 to shrink them on the item 31.

Since the unidirectional shrinkable foil 38 is used, the shrinkage occurs at the fold line 2.
4, ie transversely of the edge 27, the article 31 is wrapped in foil over its entire length after shrinking.

In the example shown in FIG. 8, the same parts are given the same reference numerals as in FIG. 5, but the difference is that the foil flap 28 is constituted by a single foil seat 33.

The foil sheet 33 is fixed to the bottom surface 22 at 29 points,
It may also extend below and be bonded to the bottom surface 22 of the substantially rectangular cardboard 21.

In FIG. 9, the packaging of the article 11 (indicated by a broken line) in the packaging of FIGS. 1 to 4 is carried out using a conveyor system.

Place the open box shown in Figure 1 at position a on the conveyor 35, and
Pack 1 at position b.

Fold the foil flap 8 over the item 11 so as to overlap it and adhere it at position C.

The nozzle 36 is provided on the conveyor 35 and blows out heated air, and the foil flap 8 is connected to the nozzle 36 as shown in FIG.
When it passes along the conveyor 35 below, it is bonded.

You may also use several knots.

A tunnel-like hood 37 is placed in position d on the conveyor 35 and provided with a heated air bath 38 at that position so that the shrinkable foil 8 causes shrinkage on the items 31 in the box 1.

The structure and operation of such air baths are well known.

After passing the tunnel, the package is closed at position e.

This is done by closing the flap 23, which then allows the package to be sent.

FIG. 10 shows the packaging process shown in FIGS. 5 to 8, which is carried by a conveyor 45, in which a rectangular cardboard box 21 with a shrinkable foil flap 28 is first placed in a basket serving as a perforated template at position a. I can accommodate 48.

After the items are packed, the foil flap 28 is closed in position b, placed in the basket 48, and one or more items are passed under near the nozzle 46 in position C.

The nozzle 46 is placed on the conveyor 45 and heated air is blown out to adhere the foil flap 28 along a line such as line 32 in FIG.

A tunnel hood 47 is provided in position d with a conventional heated air bath 49 so that the shrinkable foil is
contract above.

This air bath can be replaced, for example, by an infrared furnace.

After the hood 47 has been moved away in position e, the package is removed from the basket 48 by means of the flap 23 of the rectangular cardboard 21.

In this manner, basket 48 is ready for the next process cycle.

The package is sent out at position f by folding the flap 23 and joining it, for example, by gluing.

The packages are appropriately stacked vertically, and the cardboard 21 at the top and bottom with folds 24 serves as a cushion to prevent blistering.

According to the present invention, it is possible to provide packaging materials that can be used to create distinctive packages for packaging many items in a safe, attractive, reliable and economical manner.

The above description also provides a novel packaging method.

Although this invention has been described with reference to embodiments, it is not limited thereto, and includes modifications and alterations.

[Brief explanation of the drawing]

FIG. 1 shows the packaging material according to the present invention in an unpacked state. Figure 2 shows the same state of packaging. Figure 3 shows the state in which they are completely closed. Figure 4 is another example similar to Figure 1. Figure 5 shows the rectangular cardboard box when opened. FIG. 6 shows the packaging state of FIG. 5. Figure 7 shows the state in which Figures 5 and 6 are completely closed. Figure 8 is another example of Figure 5. FIG. 9 shows the packaging process shown in FIGS. 1 to 4. Figure 10 shows the fifth to
Figure 8 shows the packaging process. 1... Box, 2, 22... Bottom, 3, 4
... Side, 5, 6 ... Flap, 8,
28... Foil flap, 11... Item, 24... Fold, 33... Foil sheet, 35, 45... Conveyor, 36,46
・・・・・・Nozzle, 47・・・・・・Hood A48
······basket.

Claims (1)

[Scope of Claims] 1. In a packaging material for packaging an indefinite number of items of various sizes, a surface on which the item is placed and an opposing surface that defines a space of a predetermined size in which the item is substantially enclosed. a plate member having a pair of substantially parallel side walls disposed in parallel with each other; and at least one foil sheet joined to the plate member along a portion adjacent to a merging portion of the mounting surface and the opposing side wall. a foldable heat-shrinkable material in the form of a sheet, the heat-shrinkable material having a portion extending toward a free end away from said adjacent portion, said extending portion extending over said article; are folded over and bonded along their folded lengths and heat-shrinked over the items, thereby pressing the individual items against said mounting surface and reducing the number and filling of items to be packaged. Packaging material adapted to position each item within said space regardless of the size of said space. 2. In a packaging method for packaging an indefinite number of articles of various sizes, one side of a board having a pair of substantially parallel side walls arranged opposite each other to define a space of a predetermined size in which the articles are enclosed. placing the article on the article, and then applying a portion of the heat-shrinkable material in the form of at least one sheet of foil extending from the portion adjacent the union of said surface and said opposing side wall to said article. placing and folding over at least a portion of the top, then joining the overlapping portions and heating the elongated portion of the heat shrink material, thereby increasing the number of items to be placed and the size of the space to be filled. A packaging method in which the heat-shrinkable material heat-shrinks the article regardless of its size, and finally the plate is closed.