JP5493194B2 - Packaging material - Google Patents

Description

  The present invention relates to a packaging material in which a heat-shrinkable tubular film is provided between two sheet pieces.

DESCRIPTION OF RELATED ART Conventionally, like patent document 1, the package which has a cylindrical heat shrink film and the base_sheet | mounting_paper which this heat shrink film was attached to the surface is known.
The packaging material is used by thermally shrinking the heat-shrinkable film to hold the product on the film.

However, in the packaging material, since the heat shrink film is partially attached to the surface of one mount, in the distribution process, the product held on the heat shrink film may swing from side to side due to its own weight, or The product hits a foreign object. For this reason, goods may fall out of the mount together with the heat shrink film.
Furthermore, since the cylindrical heat-shrink film has openings at the top and bottom, the entire upper surface or the center of the product held by the heat-shrink film is exposed.
Since dust etc. adhere to this exposed part, there also exists a problem that a commercial value falls.

JP 2000-33968 A

  The objective of this invention is providing the packaging material which can prevent that goods etc. do not drop out and dust etc. adhere to goods.

The packaging material of this invention has the 1st sheet piece and 2nd sheet piece which opposed, the connection sheet piece, and the cylindrical film which has heat shrinkability, The said cylindrical film is said 1st sheet piece. And a part of the first sheet piece and the second sheet piece are respectively bonded to the tubular film, and one end of the connecting sheet piece is on the upper side of the first sheet piece. The other end side of the connecting sheet piece is a free end, and the other end side of the connecting sheet piece is fixed to the second sheet piece, so that the upper part of the first sheet piece and the second The upper parts of the sheet pieces are connected via the connecting sheet pieces .

In the packaging material of this invention, goods can be hold | maintained by carrying out the heat shrink of the cylindrical film. Since the tubular film is disposed between and bonded to the first sheet piece and the second sheet piece, the first sheet piece and the second sheet piece are placed before and after the product held on the tubular film. Is located. Further, the first sheet piece and the second sheet piece are connected via a connecting sheet piece.
Accordingly, since the product is sandwiched between the first sheet piece and the second sheet piece facing each other, it is possible to prevent a lateral shake due to the weight of the product in the distribution process, and in particular, even when a heavy product is packaged, it falls off. There is nothing. In addition, by giving a design indication to the first sheet piece and the second sheet piece, the packaging material of the present invention is compared with a conventional packaging material (a packaging material in which a tubular film is attached to a single mount). , Can display many promotional ads.
Moreover, since a connection sheet piece connects the upper part of a 1st sheet piece and the upper part of a 2nd sheet piece, the upper surface of goods is covered with this connection sheet piece. Therefore, it becomes difficult for dust etc. to adhere to the upper surface of the product held on the tubular film.
In addition, when the tubular film is heated, the connecting sheet piece does not cover the upper portions of the first sheet piece and the second sheet piece, so that the heat medium spreads to the upper part of the tubular film. The entire tubular film can be reliably shrunk, and shrinkage unevenness and wrinkle generation of the tubular film can be prevented.

  In a preferred packaging material of the present invention, the inner surface of the first sheet piece is bonded to a middle region of the outer surface of the tubular film excluding the upper part and the lower part of the tubular film, and the second sheet piece The inner surface is bonded to the middle region of the outer surface of the tubular film excluding the upper part and the lower part of the tubular film.

According to the packaging material of the present invention, it is possible to package a product so that wrinkles and the like are not easily generated on the cylindrical film, and dust and the like do not adhere to and fall off the product.

The front view of the packaging material which concerns on one embodiment of this invention. The rear view of the packaging material. The bottom view of the packaging material. IV-IV sectional view taken on the line of FIG. The bottom view of the packaging material in the state which expanded the cylindrical film of the packaging material. The perspective view of the packaging material. Along with the packaging material, the product is shown with a two-dot chain line. The right view of the package which packaged goods using the packaging material. The product is represented by a two-dot chain line. The perspective view of the package body. The product is represented by a two-dot chain line. The right view of the packaging material which concerns on other embodiment of this invention. The front view of the packaging material which concerns on other embodiment of this invention.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. In addition, there are cases where the first, second, etc. are added as prefixes for the terms of each part, but these prefixes are added to distinguish the terms and do not mean the order or superiority of each part. .

1-4 represents the state which folded up the packaging material in the substantially flat shape, and FIG.5 and FIG.6 represents the state which expanded the cylindrical film of the packaging material in cylindrical shape.
1-4, 10 shows the packaging material for packaging goods.
The packaging material 10 includes a pair of front and rear sheet pieces 1 and 2 (first sheet piece 1 and second sheet piece 2) arranged opposite to each other and a cylindrical shape arranged between the pair of sheet pieces 1 and 2. A film 3 and a connecting sheet piece 5 capable of connecting the upper portions of the pair of sheet pieces 1 and 2 are provided.
The packaging material 10 is usually supplied in a substantially flat state as illustrated. And when packaging goods, as shown in FIG.5 and FIG.6, the cylindrical film 3 is expanded cylindrically.

The tubular film 3 has a cylindrical shape having openings on the top and bottom, and is formed in a size (inner diameter) that can be fitted on a product. When the product is a container having a bottom surface, a corner portion, a body portion, and a shoulder portion, the vertical length of the tubular film 3 is engaged with the corner portion on the bottom surface of the container and the shoulder portion by heat shrinkage. It is preferable that the length is obtained. Furthermore, the vertical length of the tubular film 3 may be formed longer than the height of the product so as to be in close contact with the peripheral portion of the upper surface of the product.
The first sheet piece 1 and the second sheet piece 2 have, for example, a substantially rectangular shape in plan view, and both the sheet pieces 1 and 2 are preferably substantially the same shape and size. In addition, the 1st sheet piece 1 and the 2nd sheet piece 2 are not restricted to planar view substantially rectangular shape, respectively, respectively, planar view substantially circular shape, substantially elliptical shape, triangular shape, polygonal shape, and other arbitrary shapes Good. Further, the first sheet piece 1 and the second sheet piece 2 may have a shape that matches the shape of the product (for example, a shape that substantially matches the outer shape of the product in a front view).

The widths of the first sheet piece 1 and the second sheet piece 2 are preferably formed to be substantially the same as the lateral width of the product.
On the other hand, the tubular film 3 folded in a substantially flat shape is larger than the width of the first sheet piece 1 and the second sheet piece 2 as shown in the figure, and the tubular film 3 extends from both side edges of the sheet pieces 1 and 2. Both sides of the are protruding outward.
A pair of perforations 31 extending in the vertical direction from the upper edge to the lower edge of the tubular film 3 are formed on one side portion of the tubular film 3 protruding outward from one side edge of the sheet pieces 1, 2. 31 is formed.

The substantially flat tubular film 3 is arranged in such a manner that its longitudinal axis (a line connecting the center of the upper opening and the center of the lower opening) is substantially orthogonal to the upper side of the first sheet piece 1. A sheet piece 1 and a second sheet piece 2 are interposed. Accordingly, the inner surface of the first sheet piece 1 and the inner surface of the second sheet piece 2 are in contact with the outer surface of the tubular film 3, respectively.
The inner surface of the overlapping first sheet piece 1 and the outer surface of the tubular film 3 are bonded, and the inner surface of the overlapping second sheet piece 2 and the outer surface of the cylindrical film 3 are bonded. Hereinafter, a portion where the tubular film 3 and the sheet pieces 1 and 2 are bonded is referred to as an adhesive portion, and a reference numeral 7 is attached to the drawing. In addition, in order to make it easy to understand the region where the bonding portion is provided, the bonding portion is shown in light ink in FIGS. 1 and 2.
The method for adhering the tubular film 3 to the first sheet piece 1 and the second sheet piece 2 is not particularly limited, and adhesion using a known adhesive such as a solvent-type adhesive or a heat-sensitive adhesive or a solvent is used. Adhesion or adhesion using an adhesive tape can be used.

The entire inner surface of the first sheet piece 1 and the outer surface of the tubular film 3 and the inner surface of the second sheet piece 2 and the outer surface of the tubular film 3 may be bonded together. But in order to ensure many shrinkage | contraction area | regions of the cylindrical film 3, the inner surface of the 1st sheet piece 1, the outer surface of the cylindrical film 3, the inner surface of the 2nd sheet piece 2, and the outer surface of the cylindrical film 3, respectively, It is preferable that a part is adhered.
In particular, the inner surface of the first sheet piece 1 is adhered in a solid shape to a middle region of the outer surface of the tubular film 3 excluding the upper part and the lower part of the tubular film 3, and the second sheet piece 2 It is more preferable that the inner surface is solidly bonded to a midway region on the outer surface of the tubular film 3 excluding the upper part and the lower part of the tubular film 3 (see FIGS. 1 and 2). If the upper and lower parts of the tubular film 3 and the first sheet piece 1 and the second sheet piece 2 are not bonded to each other, the upper and lower parts of the tubular film 3 are free without being restricted by the sheet pieces 1 and 2. Can heat shrink. For this reason, the upper and lower parts of the cylindrical film 3 can be locked to the upper part and the lower part (for example, the shoulder part of the container and the corner part of the bottom face of the container) by heat shrinkage.

A connecting sheet piece 5 is integrally connected to the upper side of the first sheet piece 1. A crease line 91 is formed along the continuous portion of the first sheet piece 1 and the connecting sheet piece 5. When the connecting sheet piece 5 is bent along the crease line 91, the connecting sheet piece 5 is positioned above the upper opening so as to cover the upper opening of the tubular film 3.
A flap piece 6 is integrally connected to the distal end side of the connecting sheet piece 5, and a crease line 92 is formed along the connecting portion of the connecting sheet piece 5 and the flap piece 6.

An insertion portion 61 extends from the tip of the flap piece 6. The insertion portion 61 is locked by being inserted into a slit-shaped cut portion 21 formed in the surface of the second sheet piece 2.
By engaging the insertion part 61 with the cut part 21 of the second sheet piece 2, the upper part of the first sheet piece 1 and the upper part of the second sheet piece 2 are connected via the connecting sheet piece 5, and the connecting sheet The upper opening of the tubular film 3 is covered with the piece 5.

The flap piece 6 having the first sheet piece 1, the connecting sheet piece 5, and the insertion portion 61 is integrally formed from one sheet material.
The second sheet piece 2 is formed of a single sheet material independent of the first sheet piece 1.

A conventionally well-known sheet material can be used for each sheet material which forms the 1st sheet piece 1 and the 2nd sheet piece 2 grade | etc.,. The first sheet piece 1 and the second sheet piece 2 may be formed of the same sheet material, or may be sheet materials of different materials.
Examples of the sheet material include a synthetic resin sheet, a synthetic resin sheet having a metal vapor deposition layer, cardboard, and a laminated sheet thereof. Preferably, a sheet including a synthetic resin sheet is used, and more preferably, a synthetic resin sheet (including a resin sheet in which two or more synthetic resin sheets are laminated) is used. Examples of the material of the synthetic resin sheet include polyolefins such as polypropylene and polyethylene, polyesters such as polyethylene terephthalate, polystyrenes, and polyamides.

Preferably, a sheet material that does not substantially deform at the shrinkage temperature of the tubular film 3 is used. Examples of such a sheet material include a biaxially stretched synthetic resin sheet and cardboard.
The synthetic resin sheet is preferably colorless, but may be colored as long as the transparency is not impaired.
The thickness of the sheet material is not particularly limited, but is about 0.1 mm to 1.0 mm when a synthetic resin sheet is used. For example, when a polyester resin sheet is used, one having a thickness of 0.1 mm to 0.6 mm is preferable because it has appropriate rigidity. Moreover, when using thick paper, the thickness is about 0.4 mm-3 mm.

  On the first sheet piece 1 and the second sheet piece 2, a desired design display such as a product name, a pattern, a product description is printed. That is, in the packaging material 10 of the present invention, at least the first sheet piece 1 and the second sheet piece 2 are provided with a design indication. But the design display may be printed also on the connection sheet piece 5, the cylindrical film 3, etc. as needed.

The tubular film 3 is formed from a heat-shrinkable film that can be heat-shrinked at a shrinkage temperature (for example, about 80 to 100 ° C.), and is preferably formed from a transparent (including colored and transparent) heat-shrinkable film. The tubular film 3 is formed by making this heat-shrinkable film into a cylindrical shape and bonding the both end portions thereof.
The material of the heat-shrinkable film is not particularly limited as long as it can heat-shrink in at least one direction (circumferential direction when formed into a cylindrical shape, hereinafter the same), and a thermoplastic resin such as a polyester-based resin. A film-made film can be used.
Moreover, the cylindrical film 3 can also be formed using the laminated | multilayer film by which functional layers, such as a gas barrier layer, a light barrier layer, and a heat insulation layer, were laminated | stacked on the heat-shrinkable film.
A design print layer may be provided on the front surface and / or the back surface of the tubular film 3 as necessary.

The heat shrinkage rate (immersion in 90 ° C. warm water for 10 seconds) in one direction of the heat shrinkable film is, for example, about 30% or more, preferably about 40% or more. In addition, the heat-shrinkable film may be slightly heat-shrinked in the other direction (direction perpendicular to one direction in the film plane), and the heat-shrinkage rate in the other direction (immersion in 90 ° C. warm water for 10 seconds) is About -3 to 10%.
However, thermal shrinkage rate (%) = [{(original length in one direction (or other direction)) − (length after immersion in one direction (or other direction))} / (one direction (or other direction) ) Original length)] × 100.
The thickness of the heat-shrinkable film is not particularly limited, but is generally 20 μm to 200 μm, preferably 20 μm to 100 μm, and more preferably 30 μm to 60 μm.

The packaging material 10 of the present invention having the above configuration is used as follows, for example.
As shown in FIG. 6, the product is inserted into the tubular film 3 from the lower opening (or the upper opening) of the tubular film 3 (the tubular film 3 of the packaging material 10 is externally fitted to the product). The product includes, for example, a bottom surface A1, a body portion A3 integrally formed from the bottom surface A1 via a corner portion A2, a shoulder portion A4 formed integrally with the body portion A3 and gradually reduced in diameter, And a container A having an upper surface A5 formed above the portion A4.

  The product is not limited to the container configured as described above, and may be a container of another shape. The packaging material 10 of the present invention can package various products. Examples of the products include cosmetic containers, sanitary containers, and beverage containers. Further, the product is not limited to a container, and may be a toy, a machine part, or the like.

Next, in order to heat the cylindrical film 3, a heat medium is made to act (for example, the hot air of predetermined temperature is sprayed). The cylindrical film 3 is thermally contracted in the circumferential direction by heating and is in close contact with the outer surface of the product including the body A3 of the container A.
Since the upper part and the lower part of the tubular film 3 are not bonded to the first sheet piece 1 and the second sheet piece 2, the tubular film 3 is not only the body A3 of the container A but also the tubular part by heat shrinkage. The upper part of the cylindrical film 3 is in close contact with the shoulder part A4 of the container A and the peripheral part of the upper surface A5, and the lower part of the tubular film 3 is in close contact with the corner part A2 of the container A. For this reason, there is no possibility that the container A comes out in the vertical direction of the tubular film 3, and the commodity can be reliably held by the tubular film 3. Furthermore, when the upper part of the tubular film 3 is in close contact with the peripheral part of the upper surface A5 of the container A, a tamper function (prevention of tampering) can be imparted.
Further, the lower portions of the first sheet piece 1 and the second sheet piece 2 follow the contraction of the tubular film 3 and bend in an arc shape according to the outer shape of the body A3 of the container A.

Furthermore, since the connecting sheet piece 5 does not cover the tubular film 3 during this heating, the heat medium also spreads over the upper portion of the tubular film 3. For this reason, the whole cylindrical film 3 can be shrink | contracted reliably, and the shrinkage | contraction unevenness, wrinkle generation | occurrence | production, etc. of the cylindrical film 3 can be prevented.
Finally, as shown in FIGS. 7 and 8, the connecting sheet piece 5 and the flap piece 6 are bent at the crease lines 91 and 92, and the insertion part 61 is inserted into the notch part 21, whereby the packaging body (the packaging of the present invention). Product packaged with the material 10).

In the obtained package, the first sheet piece 1 and the second sheet piece 2 are positioned before and after the product (container A) held by the tubular film 3. Since the 1st sheet piece 1 and the 2nd sheet piece 2 are connected by the connection sheet piece 5, strength can increase and it can prevent that the 1st sheet piece 1 and the 2nd sheet piece 2 peel from the cylindrical film 3. FIG. .
Since the product is sandwiched between the first sheet piece 1 and the second sheet piece 2 that face each other, the product does not fall off during the distribution process.
Moreover, since the sheet piece (the 1st sheet piece 1 or the 2nd sheet piece 2) exists in either side before and behind goods, many advertisements can be shown to consumers.
Further, since the connecting sheet piece 5 covers the product, dust or the like can be prevented from adhering to the upper surface of the product held by the tubular film 3.
Further, the lower sides of the first sheet piece 1 and the second sheet piece 2 and the bottom surface of the product (the bottom surface A1 of the container A) are substantially on the same plane, or the bottom surface of the product is the first sheet piece 1 and the second sheet piece. Since it has come out a little lower than each lower side of 2, it is also possible to make the packaging body stand by itself stably.

When taking out goods from the said package, if the strip | belt-shaped area | region enclosed by this perforation 31 and 31 is removed using a pair of perforations 31 and 31 of the cylindrical film 3, the cylindrical film 3 can be parted. .
And a product can be taken out from the divided part.

The present invention is not limited to the packaging material shown in the above embodiment, and can be appropriately changed in design within the intended scope of the present invention. Hereinafter, although the modification of the packaging material of this invention is demonstrated, the term and code | symbol are used about the structure similar to the said embodiment.
In the said embodiment, the connection sheet piece 5 and the 2nd sheet piece 2 are not integrally connected, but by inserting the insertion part 61 of the connection sheet piece 5 in the notch part 21 of the 2nd sheet piece 2 Although the upper part of the 1st sheet piece 1 and the upper part of the 2nd sheet piece 2 are connected via the connection sheet piece 5, as shown in FIG. 9, for example, the connection sheet piece 5 is the 1st sheet piece 1 and 2nd. The sheet piece 2 may be integrally provided continuously. In the packaging material according to this other embodiment, the upper side of the first sheet piece 1 and one side of the connecting sheet piece 5 are integrally formed via the crease line 93, and the upper side of the second sheet piece 2 The other side of the connecting sheet piece 5 is integrally formed via a crease line 94. The first sheet piece 1 and the second sheet piece 2 are bent at the crease lines 93 and 94 so as to be substantially orthogonal to the connecting sheet piece 5. The tubular film 3 is disposed between the first sheet piece 1 and the second sheet piece 2 facing each other, and similarly to the above-described embodiment, the inner surface of the first sheet piece 1 and the second sheet 2 are respectively connected via the adhesive portion 7. The sheet piece 2 is partially bonded to the inner surface.

  In this other embodiment, the tubular film 3 is not folded in a substantially flat shape, and is bonded to the first sheet piece 1 and the second sheet piece 2 in a tubular state. However, the connecting sheet piece 5 can be folded by forming a crease line parallel to the side of the connecting sheet piece 5 in the middle of the one side and the other side. If such a crease line is formed in the connecting sheet piece 5, the tubular film 3 (that is, the packaging material 10) can be folded into a substantially flat shape.

  Further, a tongue-like sheet piece may be further extended from a part of the first sheet piece 1, the second sheet piece 2, or the connecting sheet piece 5 of the above embodiment. Such a tongue-shaped sheet piece can be used as an advertising space for design display, and further, for example, by extending a tongue-shaped sheet piece from the connecting sheet piece 5 and forming a hanging hole in the sheet piece A hanging display is also possible.

In the said embodiment, each inner surface of the 1st sheet piece 1 and the 2nd sheet piece 2 is adhere | attached solidly on the middle area of the outer surface of the cylindrical film 3 (except the upper part and lower part of the cylindrical film 3). However, it does not necessarily have to be solidly bonded to the entire midway region.
For example, as shown in FIG. 10, two belt-like regions 71 at both end portions in the circumferential direction of the tubular film 3 in the middle region of the outer surface of the tubular film 3 (excluding the upper part and the lower part of the tubular film 3). , 71 may be bonded to the inner surface of the first sheet piece 1. Note that, in FIG. 10, the bonding portion is represented by light ink painting. Similarly, only two belt-like regions at both end portions in the circumferential direction of the tubular film 3 may be bonded to the inner surface of the second sheet piece 2 (not shown).
Thus, even in the case where only the band-like regions at both end portions in the circumferential direction of the tubular film 3 are bonded to the first sheet piece 1 and the second sheet piece 2, as in the above embodiment, heat shrinkage is performed. Then, the container is not likely to come out of the tubular film 3, and the lower portions of the first sheet piece 1 and the second sheet piece 2 follow the contraction force of the tubular film 3 and bend in an arc shape. .

  The packaging material of the present invention can be used for packaging various products.

  DESCRIPTION OF SYMBOLS 1 ... 1st sheet piece, 2 ... 2nd sheet piece, 21 ... Cut part, 3 ... Cylindrical film, 31 ... Perforation, 5 ... Connection sheet piece, 6 ... Flap piece, 61 ... Insertion part, 7 ... Adhesion part 10 ... Packaging material

Claims (2)

A first sheet piece and a second sheet piece facing each other, a connecting sheet piece, and a tubular film having heat shrinkability;
The tubular film is disposed between the first sheet piece and the second sheet piece;
A part of the first sheet piece and the second sheet piece are respectively bonded to the tubular film,
One end of the connecting sheet piece is connected to the upper side of the first sheet piece, and the other end side of the connecting sheet piece is a free end,
The packaging characterized in that the upper end of the first sheet piece and the upper part of the second sheet piece are connected via the connecting sheet piece by stopping the other end side of the connecting sheet piece to the second sheet piece. Wood.   The inner surface of the first sheet piece is bonded to a midway region of the outer surface of the cylindrical film excluding the upper part and the lower part of the cylindrical film, and the inner surface of the second sheet piece is bonded to the cylindrical film. The packaging material according to claim 1, wherein the packaging material is adhered to a midway region on the outer surface of the cylindrical film excluding the upper part and the lower part.

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