JP2007246174A - Paper box with content-fastening function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper box with a content-fastening function, which surely fastens contents and prevents the contents from being broken and damaged during their storage, transportation and handling even when a plurality of the contents are packaged. <P>SOLUTION: The paper box with the content-fastening function is a rectangular parallelepiped paper box comprising four side plates, an upper surface plate and a bottom surface plate. The bottom surface plate and the upper surface plate comprise bottom surface inner plates and upper surface inner plates both continuously connected to the lower ends and the upper ends of a pair of opposing side plates via a folding line respectively, and bottom surface outer plates and upper surface outer plates both continuously connected to the lower ends and the upper ends of a pair of opposing side plates via a folding line respectively. There is attached to the paper box with the content-fastening function, a strip-like excellently flexible plastic film one end of which is bonded to the inner surface of the bottom surface outer plate and the other end of which has a length reaching at least the end of the upper surface outer plate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paper box capable of fixing packaged contents so as to prevent breakage or damage during handling during storage and transportation.

Conventionally, as a packaging material for fixing a content packaged in a cardboard box or the like by a film attached to the inner surface of the cardboard box or the like, for example, the one described in Japanese Patent Publication No. 58-3904 is known (for example, Patent Document 1). The packaging material includes a plate member having a surface on which the product is placed, a pair of substantially parallel side walls arranged opposite to each other, which defines a space of a predetermined size in which the product is almost enclosed, and the product. At least one portion of the heat shrink material made of a foil sheet is joined along the lower portion of the side wall adjacent to the united portion of the surface to be placed and the opposite side wall, that is, the other end extends toward the free end. It consists of a heat-shrink material consisting of a single sheet of foil. The product is placed on the surface of the packaging material on which the product is placed, and the heat-shrink material stretches over the product to heat-shrink. Thus, the packaging material can fix the product regardless of the number of products to be packaged and the size of the space to be filled. However, in the case of this packaging material, since the heat shrink material made of a foil sheet is attached to the lower portion of the side wall and attached, the foil sheet is folded on the product placed on the packaging material placing surface. When heat shrinking, the adhesive part of the foil sheet may be peeled off and separated from the side wall, so that there is a drawback that the product cannot be fixed securely.
Japanese Patent Publication No.58-3904

  It is an object of the present invention to provide a paper box with a content fixing function that can securely fix the packaged content and prevent the content from being damaged during handling during storage and transportation. is there.

  A rectangular parallelepiped paper box composed of four side plates, a top plate, and a bottom plate, wherein the bottom plate and the top plate are connected to a lower end and an upper end of a pair of opposing side plates via creases, respectively. The bottom inner plate and the upper surface inner plate, and the bottom outer plate and the upper outer plate connected to the lower and upper ends of the other pair of opposing side plates via a crease, respectively, and one end is A paper box with a content fixing function, to which a plastic film having a strip-like shape having a length which is bonded to the inner surface of the bottom outer plate and has the other end reaching at least the end of the upper outer plate is attached. It is. In this case, the entire contents of the top surface of the contents can be covered by placing the contents on the bottom plate of the paper box and folding the plastic film on the contents, so the plastic film is heated in this state. The entire contents can be securely fixed and held in a state where the contents are placed on the bottom plate by being contracted and brought into close contact with the upper surface of the contents. In addition, even when stress is applied to the bonding part by heating the plastic film, one end of the plastic film is bonded to the inner surface of the bottom outer plate and is sandwiched between the bottom inner plate and the bottom outer plate. The plastic film is not peeled off and separated from the paper box.

  In the above-mentioned paper box, one end of the plastic film is bonded at a position on the crease side with respect to the center in the length direction of the bottom surface outer plate, whereby the bottom plate of the paper box is folded and bonded. When assembling, even if a plastic film is bonded to the inside of the bottom surface outer plate, the bottom surface outer plate and the bottom surface inner plate can be firmly bonded in a region where the plastic film of the bottom surface outer plate is not laminated. So there is no hindrance to the assembly of the paper box.

  In the above-mentioned paper box, the plastic film is a heat-shrinkable plastic film stretched at least in the longitudinal direction, and the heat-shrinkable plastic film is contracted at least in the longitudinal direction by heating, so that the contour of the upper surface of the contents Since the plastic film can be brought into close contact with each other, the entire contents can be uniformly fixed and held. Moreover, even when packaging a plurality of contents, all the contents can be reliably fixed on the bottom plate of the paper box.

  A rectangular parallelepiped paper box composed of four side plates, a top plate, and a bottom plate, wherein the bottom plate and the top plate are connected to the lower and upper ends of a pair of opposing side plates via folding lines, respectively. The inner plate and the upper surface inner plate, and the bottom surface plate and the top surface outer plate connected to the lower end and the upper end of the other pair of opposing side surface plates via a crease, respectively, one end of the bottom surface plate By making a paper box with a content fixing function with a strip-shaped flexible plastic film attached to the inner surface and having the other end reaching at least the end of the upper skin, By placing the object on the bottom plate of the paper box and folding the plastic film over the contents, the entire upper surface of the contents can be covered, so in this state the plastic film is heated and shrunk, The entire contents of the contents are contacted by the upper surface of the contents thereof in a state of being placed on the bottom plate can be reliably fixed to hold. In addition, even if strong stress is applied to the bonded portion by shrinking the plastic film, one end of the plastic film is bonded to the inner surface of the bottom outer plate and sandwiched between the bottom inner plate and the bottom outer plate. Therefore, the plastic film is not peeled off from the paper box. When assembling the paper box by folding and bonding the bottom plate of the paper box, the plastic box has a structure in which one end of the plastic film is bonded at a position closer to the crease side than the center in the length direction of the bottom outer plate. In addition, even if the plastic film is adhered to the inside of the bottom outer plate, the bottom outer plate and the bottom inner plate can be firmly bonded in the region where the plastic film of the bottom outer plate is not laminated. There is no problem in assembling the paper box. In the above-mentioned paper box, the plastic film is at least a heat-shrinkable plastic film stretched in the longitudinal direction, and the heat-shrinkable plastic film is contracted at least in the longitudinal direction by heating, so that the contour of the upper surface of the contents is obtained. Since the plastic film can be closely adhered along, the entire contents can be fixed and held evenly. Even when a plurality of contents are packaged, all the contents can be reliably fixed on the bottom plate of the paper box.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view showing a blank of an embodiment of the paper box of the present invention, FIG. 2 is a perspective view showing a state in which the paper box of the embodiment is assembled, and a lid is opened, FIG. 3 is a cross-sectional view taken along line II in FIG. FIG. 5 is a cross-sectional view showing the procedure for packaging the contents in the paper box of the embodiment, FIG. 6 is a plan view showing a blank of another embodiment of the paper box of the present invention, Side plates, 5 are adhesive pieces, 6, 6 ', 8, 8' are bottom outer plates, 7, 9 are bottom inner plates, 11, 13 are upper surface outer plates, 12, 14 are upper surface inner plates, and 15, 16 are A plastic film, 17 and 18 are adhesive portions, 19 and 22 are bottom plate adhesive portions, 20 is a content, and 21 is a diagonal crease.

  In the blank according to the first embodiment of the present invention, as shown in FIG. 1, the adhesive piece 5, the side plate 1, the side plate 2, the side plate 3, and the side plate 4 are connected via a crease, respectively. , 3 are connected to the upper surface outer plates 11 and 13 via creases, respectively, and the bottom surface plates 6 and 8 are connected to the lower ends of the side plates 1 and 3 via creases, respectively. Upper surface inner plates 12 and 14 are connected to the upper ends of the face plates 2 and 4 via creases, respectively, and bottom inner plates 7 and 9 are connected to the lower ends of the side plates 2 and 4 via creases, respectively. The bottom ends of the strip-shaped plastic films 15 and 16 are attached to the positions closer to the creases than the center in the length direction of the bottom surface outer plate 6 and the bottom surface outer plate 8 by the adhesive portions 17 and 18 being attached. is there. In the case of a rectangular paper box, the bottom outer plates 6 and 8 are connected to the lower side plates of the wider side, i.e., the side plates 1 and 3 in the first embodiment. A plastic film is bonded to 8. In the case of a paper box having a square planar shape, a bottom outer plate may be connected to any side plate.

  The strip-shaped plastic film 15 and the plastic film 16 have substantially the same width as that of the bottom surface outer plate 6 and the bottom surface outer plate 8, and the free ends are longer than the upper ends of the top surface outer plate 11 and the top surface outer plate 13. Is also set to a length extending upward. By making the shape of the strip-shaped plastic films 15 and 16 as described above, the contents were stored on the bottom plate of the paper box, and the strip-shaped plastic films 15 and 16 were folded and covered on the top surface of the contents. In this case, since the entire upper surface of the contents can be covered, the contents can be securely fixed even when the contents are placed on the entire surface of the bottom plate of the paper box.

  As the plastic films 15 and 16, films having heat shrinkability excellent in flexibility and stretched at least in the longitudinal direction are preferable. Examples of resins that can be used for the plastic films 15 and 16 include low-density polyethylene, linear low-density polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), and ethylene-methacrylic acid copolymer. A combination (EMAA), vinylidene chloride resin, ionomer, soft polyvinyl chloride, or the like can be used. The plastic films 15 and 16 may be any film having a heat-shrinkable property stretched at least in the longitudinal direction, and a uniaxially stretched film or a biaxially stretched film can be used. By using a flexible and self-adhesive plastic film 15, 16, the plastic films 15, 16 come into close contact with each other when the plastic film 15, 16 is folded on the upper surface of the contents stored in the paper box. Therefore, it is possible to fix the contents only by heating without heat bonding.

  The blank shown in FIG. 1 is folded at the crease between the side plate 1 and the side plate 2 and the crease between the side plate 3 and the side plate 4 and bonded at the side edges of the adhesive piece 5 and the side plate 4. It is used as a paper box in a state of being molded into a cylindrical shape. When packaging the contents, first, the box was raised from the state of the cylinder being attached to form a rectangular cylinder, the bottom inner plates 7 and 9 were bent inward, and the plastic films 15 and 16 were respectively adhered thereto. The bottom outer plates 6 and 8 are folded, and the bottom inner plates 7 and 9 and the bottom outer plate are formed at the bottom plate bonding portion 19 in the region where the plastic films 15 and 16 on the inner surfaces of the bottom outer plates 6 and 8 are not laminated. The assembled paper box shown in FIG. 2 is completed by assembling the bottom plate of the paper box by bonding 6 and 8 with an adhesive or the like.

  The cross-sectional shape of the assembled paper box shown in FIG. 2 is that the bottom edge of the plastic film 15 is bonded to the bottom skin 6 by the adhesive portion 17 as shown in FIG. 6 and the bottom inner plate 7 and the bottom inner plate 9 are sandwiched and fixed, and the lower edge of the plastic film 16 is bonded to the bottom outer plate 8 with an adhesive portion 18. The bottom outer plate 8 and the bottom inner plate 7 and the bottom inner plate 9 are sandwiched and fixed. With the above configuration, the lower edge of the plastic films 15 and 16 are bonded and fixed by the bonding portions 17 and 18, and the bottom surface outer plate 6 or the bottom surface outer plate 8 and the bottom surface inner plate 7 and Since it is sandwiched between the bottom inner plate 9 and firmly fixed, even if the plastic films 15 and 16 are heated and shrunk, even if a strong stress is applied to the adhesive portions 17 and 18, they are separated and separated from the paper box. Never come.

  As shown in FIGS. 4 and 5, the procedure for packaging the contents in the assembled paper box is as follows. First, the contents are placed and stored on the bottom plate of the paper box, and the plastic film 15 is covered so as to cover the upper surface of the contents. , 16 are bent on the upper surface of the contents and overlapped to form the state shown in FIG. Next, by heating the plastic films 15 and 16 that are folded and overlapped on the upper surface of the contents, the plastic films 15 and 16 contract and come into close contact with the surface of the contents, resulting in the state shown in FIG. Is firmly fixed on the bottom plate. Since the plastic films 15 and 16 having excellent flexibility are used, the plastic films 15 and 16 are brought into close contact with each other when they are folded, so that the plastic films 15 and 16 are heated when contracted by heating. There is no need to bond.

  As shown in FIG. 6, the blank according to the second embodiment of the present invention includes an adhesive piece 5, a side plate 1, a side plate 2, a side plate 3, and a side plate 4 connected to each other via a crease. , 3 are connected to the upper surface outer plates 11 and 13 via folding lines, respectively, and the bottom surface plates 6 'and 8' are connected to the lower ends of the side plates 1 and 3 via folding rules, respectively. The upper surface inner plates 12 and 14 are connected to the upper ends of the side plates 2 and 4 via creases, respectively, and the bottom inner plates 7 and 9 are connected to the lower ends of the side plates 2 and 4 via the creases, respectively. The lower ends of the strip-shaped plastic films 15 and 16 are bonded to each other by bonding portions 17 and 18 at positions closer to the crease than the center in the length direction of the bottom surface outer plate 6 ′ and the bottom surface outer plate 8 ′. A diagonal crease 21 is formed near one side end of the bottom face plates 6 ′ and 8 ′. That is the shape.

  The blank shown in FIG. 6 is first made up of the bottom surface outer plate 6 ′, the bottom surface inner plate 7, the bottom surface outer plate 8 ′, and the bottom surface inner plate 9 as the side surface plate 1, the side surface plate 3 of the side surface plate 2, and the inner surface side of the side surface plate 4, respectively. The side edges of the bottom surface outer plate 6 ′ and the bottom surface outer plate 8 ′ are folded outward by the diagonal crease 21, and then the crease between the side plate 1 and the side plate 2 and the side plate 3 and the bottom plate 6 'and the bottom inner plate 7, and the bottom outer plate 8' and the bottom inner plate 9 are bonded to each other at the bottom plate bonding portion 22 and bonded pieces 5 And it is used as a paper box in the state which adhere | attached in the side edge part of the side plate 4, and was shape | molded in the cylinder shape. In the case of the second embodiment, when the contents are packaged, the bottom plate of the paper box is formed with one touch by raising the box from the cylinder-laminated state into a quadrangular cylinder, and the assembly shown in FIG. The paper box is completed. The procedure for packaging the contents is the same as in the first embodiment.

The top view which shows the blank in 1st Embodiment of the paper box of this invention. The perspective view which shows the state which assembled the bottom of the paper box of 1st Embodiment, and opened the cover. II sectional drawing in FIG. Sectional drawing which shows the state which mounted the content in the paper box of 1st Embodiment, and folded up the plastic film on the upper surface of the content. Sectional drawing of the state which heated and shrunk the plastic film from the state shown in FIG. 4, and fixed the content. The top view which shows the blank in 2nd Embodiment of the paper box of this invention.

Explanation of symbols

1, 2, 3, 4 Side plate 5 Joint piece 6, 6 ', 8, 8' Bottom outer plate 7, 9 Bottom inner plate 11, 13 Upper surface outer plate 12, 14 Upper surface inner plate 15, 16 Plastic film 17, 18 Bonding part 19, 22 Bottom plate bonding part 20 Contents 21 Diagonal crease

Claims (3)

A rectangular parallelepiped paper box composed of four side plates, a top plate, and a bottom plate, wherein the bottom plate and the top plate are connected to a lower end and an upper end of a pair of opposing side plates via creases, respectively. The bottom inner plate and the upper surface inner plate, and the bottom outer plate and the upper outer plate connected to the lower and upper ends of the other pair of opposing side plates via a crease, respectively, and one end is A strip-shaped plastic film having excellent flexibility is attached to the inner surface of the bottom surface outer plate, and the other end has a length that reaches at least the end of the upper surface outer plate. Paper box with fixed contents. 2. A paper box with a content fixing function according to claim 1, wherein one end of the plastic film is bonded at a position closer to the crease side than the center in the length direction of the bottom surface outer plate. 3. A paper box with a content fixing function according to claim 1, wherein the plastic film is a heat-shrinkable plastic film stretched at least in the longitudinal direction.

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