WO2021084870A1 - Conveying method - Google Patents

Abstract

A conveying method for using a moisture-proof box and conveying articles, that includes: a step in which a moisture-proof paper having a coating layer on at least one surface of a paper base material is transported in a wound state, corrugated by a corrugator, folded, and punched, then moisture-proof cardboard is carried in a sheet shape to a location where a moisture-proof box is to be used or the vicinity thereof, and is used to prepare a moisture-proof box that has an integrated structure having all bottom and side surface sections folded and formed into a box; a step in which the article is housed in the prepared moisture-proof box; and a step in which the moisture-proof box housing the article is shipped in order to convey same to the consumption area.

Description

Transport method

The present invention relates to a method for transporting an article using a moisture-proof box.

Conventionally, when ice is put together and transported like chilled products such as seafood, a styrofoam container composed of a styrofoam container and a lid is used (see, for example, Patent Document 1). Here, the Styrofoam container is manufactured at a container manufacturing factory and then transported to a place where the container is used, such as a fishing port, by truck transportation or the like.

Jitsukaisho 60-62448 Gazette

However, since the Styrofoam container is bulky, the cost of transportation and storage in an empty box before use is high. In addition, in response to growing awareness of environmental protection, there is a demand for environmentally friendly transportation methods for goods.

An object of the present invention is to provide a method for transporting an article using an environmentally friendly moisture-proof box at low cost.

The transport method of the present invention is a transport method for transporting an article using a moisture-proof box, in which moisture-proof paper having a coating layer on at least one surface of a paper substrate is transported in a wound shape. , Corrugated cardboard with a corrugator, and after folding and punching, all the bottom and side parts made with the moisture-proof corrugated cardboard that was transported in the form of a sheet to or near the place where the moisture-proof box is used. To prepare the moisture-proof box having an integral structure of folding, to store the article in the prepared moisture-proof box, and to transport the moisture-proof box containing the article to the place of consumption. Including the process of shipping to.

The transfer method of the present invention, the average coating layer thickness of the coating layer is not less 5.5μm or more, and moisture permeability per unit thickness is ^{10 (g / m 2 · 24h} ) / μm or less ..

Further, in the transport method of the present invention, the coating layer contains a synthetic resin and wax.

Further, in the transport method of the present invention, the synthetic resin contains at least one of a styrene resin, an acrylic resin, a butadiene resin, a polyolefin resin, a polyvinyl alcohol resin, a polylactic acid resin, a polyester resin, and a polyethylene resin. ..

Further, in the transport method of the present invention, the wax is a hydrocarbon wax containing paraffin.

Further, in the transport method of the present invention, the moisture-proof box to be manufactured is assembled from one piece of the moisture-proof paper, and is connected to the two opposite sides of the rectangular bottom via the first folding line. A first side wall portion is provided, and a second side wall portion is provided on each of the other two opposing sides of the bottom portion via a second folding line, and the adjacent first side wall portion and the second side wall portion are provided. In between, they are connected to both side edges via the third and fourth fold lines, respectively, and are formed into a square having both side edges as two sides, and the diagonal line between the third fold line and the fourth fold line is the first. A folding portion is provided which is folded inward in half as a five-fold line to form a triangle and is folded into the inner surface side of the second side wall portion, and a projecting piece portion is provided on the two open sides of the folding portion. A locking piece portion connected via a sixth folding line is provided on the open side of the side wall portion, and the protruding piece portion provided in the folding portion is fitted between the locking piece portion and the second side wall portion. A fitting port is formed, and the locking piece portion is valley-folded from the sixth folding line to be provided on the open side of the folding portion that is folded into the fitting port on the inner surface side of the second side wall portion. The protruding piece portion was fitted.

Further, in the transport method of the present invention, in the projecting piece portion provided on the two open sides of the folding portion, the central portion of the two open sides of the folding portion has a depth exceeding the thickness of the moisture-proof raw paper. The recesses are formed by being cut into a recess, and the protrusions on both sides of the recess are used as the protrusions. The recesses and the protrusions formed on the two open sides of the folding portion have the folding portion as the first. The locking piece is formed so as to overlap when folded in half from the five-fold line, and the locking piece portion provided on the open side of the second side wall portion is such that one of the protruding pieces composed of the two overlapping protrusions is formed. The hole-shaped fitting port to be fitted is formed, and the groove-shaped fitting port to which the other projecting piece portion is fitted is formed on both sides thereof, and the hole-shaped fitting port and the groove-shaped fitting port are formed. The space between them is a connecting portion that is connected to the second side wall portion, and the connecting portion has a width that allows it to be fitted into the recess formed on the two open sides of the folding portion, and further, the first. The two side wall portions are provided with a notch that forms a part of the connecting portion within a range that does not exceed the depth of the recess, and the line connecting the tips of the notches is the sixth folding line.

Further, in the transport method of the present invention, the moisture-proof box further includes an inner lid that covers an opening formed by the two first side wall portions and the two second side wall portions, and the inner lid is provided. , The moisture-proof paper.

Further, in the transport method of the present invention, the moisture-proof box includes an outer lid that covers the opening, and the outer lid is made of the moisture-proof paper.

Further, in the transport method of the present invention, the folding line includes the first folding line, the second folding line, the third folding line, the fourth folding line, the fifth folding line and the sixth folding line.

Further, in the transport method of the present invention, the moisture-proof box is detachably fitted to a rectangular box body assembled from one piece of the moisture-proof paper and the outer periphery of the box body to form a side surface portion of the box body and the side surface portion of the box body. It has a lid assembled from a piece of moisture-proof paper covering the upper opening, and the height of the box body and the inner depth of the lid are the same.

Further, in the transport method of the present invention, the moisture-proof box is assembled from one piece of the moisture-proof paper, and a first side wall portion is connected to two opposing sides of a rectangular bottom portion via a first folding line. A second side wall is provided on each of the other two opposing sides of the bottom and connected via a second folding line, and both side ends are provided between the adjacent first side wall and the second side wall. It is connected to the edges via the 3rd and 4th fold lines, respectively, and is formed into a square having both side edges as 2 sides. A folding portion is provided which is folded in half to form a triangle and is folded into the inner surface side of the second side wall portion, and is connected to the open side of the second side wall portion via a seventh folding line and an eighth folding line. A piece was provided, and the folded piece was folded toward the inner surface side of the second side wall portion by valley-folding the 7th folding line and the 8th folding line.

Further, in the transport method of the present invention, the dimensions of the folded piece from the 8th folding line to the open side are the same as the dimensions from the 2nd folding line to the 7th folding line.

According to the present invention, it is possible to provide a method for transporting an article using an environmentally friendly moisture-proof box at low cost.

It is a figure which shows each process of the transport method which concerns on embodiment of this invention. It is a perspective view which shows the moisture-proof box which concerns on 1st Embodiment of this invention. It is a development view of the box shown in FIG. It is a figure which shows the process of assembling the box shown in FIG. It is a top view which shows the inner lid attached to the opening of the box shown in FIG. It is a top view which shows the state which attached the inner lid to the opening of the box shown in FIG. It is a top view which shows the outer lid which concerns on 1st Embodiment of this invention. It is a figure which shows the state which put the outer lid shown in FIG. 7 on the moisture-proof box. It is an exploded perspective view of the moisture-proof box with a lid which concerns on 2nd Embodiment of this invention. It is a developed view of the lid body shown in FIG. It is explanatory drawing which shows the process of assembling the lid shown in FIG. It is a vertical cross-sectional explanatory view of the box with a lid shown in FIG. It is a perspective view of the moisture-proof box which concerns on 3rd Embodiment of this invention. It is a developed view of the moisture-proof box shown in FIG.

Hereinafter, a method for transporting an article according to the present invention will be described with reference to the drawings. In this transport method, when transporting moist articles, such as chilled products such as seafood, with ice, so that the moisture does not leak to the outside, or dry articles are removed from the outside moisture. Transport using a moisture-proof box to protect.

That is, in the transport method according to the present invention, moisture-proof paper having a coating layer on at least one surface of the paper base material is transported in a wound shape, corrugated with a corrugated board, folded and punched, and then moisture-proof. The process and preparation of a moisture-proof box with an integrated structure in which the bottom and side parts are all folded into a box made of moisture-proof corrugated cardboard that has been transported to the place where the box is used or near it in the form of a sheet. It includes a step of accommodating an article in a corrugated cardboard box and a step of shipping the moisture-proof box containing the article for transportation to a place of consumption.

FIG. 1 is a diagram showing each step of the transport method according to the embodiment of the present invention. In this transport method, a moisture-proof box is prepared at a place where the moisture-proof box is used, for example, at a fishing port (S1).

First, in a paper mill and / or a paper coating factory, moisture-proof paper having a coating layer on at least one surface of a paper base material is manufactured. The moisture-proof paper will be described later. The produced moisture-proof paper is transported to a corrugated board processing maker in a wound shape. In a corrugated cardboard processing maker, two sheets of moisture-proof paper (corrugated cardboard base paper) and one corrugated core base paper are bonded together with a corrugator. That is, a moisture-proof corrugated cardboard is manufactured by performing a corrugated cardboard process in which corrugated cardboard base paper is applied to both sides of the core base paper with a corrugated board so that the coating layer faces outward.

After that, print on the moisture-proof cardboard, make a fold line to make a box, and perform punching. The moisture-proof corrugated cardboard is transported in a sheet shape to or near the place where the moisture-proof box is used, and the moisture-proof box having an integral structure in which the bottom and side surfaces are all folded is manufactured. That is, in a place where a moisture-proof box is used, a person who stores the product in the moisture-proof box makes the box. Alternatively, a box maker near the place where the moisture-proof box is used makes the box. The structure and box making of the moisture-proof box will be described later. In this way, the moisture-proof box made in the place where the moisture-proof box is used is prepared.

In the prepared moisture-proof box, for example, seafood and the like are stored together with ice (S2). Then, the moisture-proof box containing the goods is shipped for transportation to a consumption place such as a market or a supermarket (S3).

According to this method of transporting goods, it is possible to reduce the cost of transportation and storage in an empty box state before use, and it is possible to easily dispose of the goods after use, so that the cost is low and the environment is high. It is possible to provide a method of transporting an article using a moisture-proof box in consideration of the above.

(Moisture-proof paper)
Hereinafter, the moisture-proof paper according to the present invention will be described. The moisture-proof paper according to the present invention includes a paper base material and a coating layer located on at least one surface of the paper base material, and the coating layer has an average coating layer thickness of 5. and at 5μm or more and is characterized in that the moisture permeability per unit thickness of the coating layer is ^{10 (g / m 2 · 24h} ) / μm or less. Such a moisture-proof paper has both moisture-proof and waterproof properties, and thereby suppresses a decrease in strength in applications where it comes into contact with moisture or moisture.

<Paper base material>
As the paper base material constituting the moisture-proof paper of the present invention, one having an optimum basis weight can be used depending on the use of the moisture-proof paper. When the paper base material is single-layer paper, the lower limit of the basis weight ^{can be appropriately set in the range of 10 g / m 2} or more and the upper limit ^{can be appropriately set in the range of 250 g / m 2} or less. For example, when the paper base material is kraft paper. The lower limit of the basis weight can be set in the range of ^{30 g / m 2} or more, and the upper limit ^{can be set in the range of 250 g / m 2 or less.} Further, when the paper base material is a multi-layer corrugated board having two or more layers of paper, the lower limit of the basis weight thereof can be appropriately set in the range of ^{100 g / m 2} or more and the upper limit of 750 g / m ^{2 or less.} For example, in the case of a corrugated cardboard liner, the lower limit of the basis weight can be set in the range of ^{100 g / m 2} or more and the upper limit ^{can be set in the range of 550 g / m 2 or less.}

The physical properties of the paper base material can be appropriately set according to the use of the moisture-proof paper. For example, the lower limit of the longitudinal elongation is 1.0% or more, the upper limit is 15.0% or less, and the lower limit of the lateral elongation is Set so that the upper limit is 2.0% or more and the upper limit is 12.0% or less, the lower limit of the specific compression strength is 100 N ・ m ² / g or more, and the upper limit is 350 N ・ m ² / g or less. Can be done.

Examples of such paper-based raw material pulps include coniferous bleached kraft pulp (NBKP), broadleaf bleached kraft pulp (LBKP), coniferous unbleached kraft pulp (NUKP), broadleaf bleached kraft pulp (LUKP), and crushed wood pulp (GP). ), Refiner ground pulp (RGP), chemical pulp (CP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP) and other wood fiber-derived pulps, Kenaf, bagus, bamboo, hemp, straw, etc. The non-wood pulp obtained can be mentioned.

The paper base material may contain recycled paper pulp or may not contain recycled paper pulp. When the used paper pulp is contained, for example, when the paper base material is a single-layer paper, the blending ratio of the used paper pulp in the total pulp is preferably 10% by mass or more, more preferably 25% by mass or more, still more preferable. Can be 50% by mass or more, most preferably 70% by mass or more, and 100% by mass (consisting only of pulp derived from used paper). Further, kraft pulp may be blended as pulp other than used paper pulp, or the entire amount may be kraft pulp. Further, when the paper base material is a multi-layer paperboard having two or more layers of paper, the recycled paper pulp blending ratio per layer can be as described above, and the recycled paper pulp blending ratio in each layer is different. There may be.

As used paper pulp, used paper pulp, high-quality paper, high-quality coated paper, medium-quality paper, medium-quality coated paper, stencil paper, etc., which are obtained by separating unprinted used paper such as corrugated waste paper, fine white, special white, medium white, and white loss. Printed waste paper, written waste paper, paper such as discarded confidential documents, magazine waste paper, newspaper waste paper deinked after desorption (DIP), etc. can be used.

<Coating layer>
As described above, the lower limit of the average coating layer thickness of the coating layer constituting the present invention is in the range of 5.5 μm or more, preferably 5.7 μm or more. Further, the upper limit of the average coating layer thickness can be 20 μm or less, preferably 15 μm or less, and more preferably 12.5 μm or less. The upper limit of moisture permeability per unit thickness of the coating layer ^{10 (g / m 2 · 24h} ) / μm or less, preferably ^{8 (g / m 2 · 24h} ) / μm or less. Here, the average coating layer thickness is an average value of the thicknesses of the coating layers measured at arbitrary 10 points. The moisture permeability per unit thickness of the coated layer is a value calculated by dividing the moisture permeability measured from the coating layer side of the moisture-proof paper in accordance with JIS Z 0208 by the average coating layer thickness. ..

If the average coating layer thickness of the coating layer is less than 5.5 μm, it becomes difficult for the moisture-proof paper of the present invention to have moisture-proof and waterproof properties. Further, the moisture permeability per unit thickness of the coating layer exceeds ^{10 (g / m 2 · 24h} ) / μm, not only the water resistance is lowered, comprising the moisture-proof paper of the present invention, moisture resistance even It will be inadequate. Here, the waterproof property in the present invention means that even if a container is made of moisture-proof paper, water is put into the container and the container is left for one week, water does not seep out and the shape of the container is not deformed. Alternatively, it means that the shape of the container is maintained although some deformation is observed.

It is preferable that such a coating layer contains a synthetic resin and wax. The synthetic resin preferably contains at least one of a styrene resin, an acrylic resin, a butadiene resin, a polyolefin resin, a polyvinyl alcohol resin, a polylactic acid resin, a polyester resin, and a polyethylene resin. In particular, it is preferable that the synthetic resin is a styrene resin and / or an acrylic resin.

(Styrene resin)
The styrene-based resin that can be contained in the coating layer constituting the present invention is a resin in which the copolymerization ratio of the styrene-based monomer having a styrene skeleton in the structure is 50% by mass or more, and is a styrene-based simple resin. It may consist only of a polymer of a dimer.

Examples of the styrene-based monomer include styrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 2,4-dimethylstyrene, ethylstyrene, p-tert-butylstyrene, α-methylstyrene, and α. -Methyl-p-methylstyrene and the like can be mentioned.

Examples of the monomer copolymerizable with the styrene monomer include alkyl methacrylates such as methyl methacrylate, cyclohexyl methacrylate and methyl phenyl methacrylate, alkyl acrylates such as methyl acrylate, ethyl acrylate, butyl acrylate and cyclohexyl acrylate, and methacrylic acid. , Unsaturated carboxylic acids such as acrylic acid, unsaturated dicarboxylic acid anhydrides such as maleic acid and itaconic acid, unsaturated nitriles such as acrylonitrile and methacrylonitrile, 1,3-butadiene, 2-methyl-1 , 3-butadiene and the like conjugated diene and the like. These can be used alone or in combination of two or more.

(Acrylic resin)
The acrylic resin that can be contained in the coating layer constituting the present invention is a resin in which the copolymerization ratio of acrylic acid, methacrylic acid and the acrylic monomer which is a derivative thereof is 50% by mass or more. , It may be composed only of a polymer of an acrylic monomer.

Examples of the acrylic monomer include methacrylic acid esters such as cyclohexyl methacrylate, t-butylcyclohexyl methacrylate and methyl methacrylate, and acrylic acid esters such as methyl acrylate, ethyl acrylate, butyl acrylate and isopropyl acrylate. The acrylic resin may be a polymer of one or more kinds of monomers selected from these acrylic monomers.

Examples of the monomer copolymerizable with the acrylic monomer include styrene, o-methylstyrene, p-methylstyrene, 2,4-dimethylstyrene, ethylstyrene, p-tert-butylstyrene, and α-methyl. Aromatic vinyl compounds such as styrene and α-methyl-p-methylstyrene, unsaturated nitriles such as acrylonitrile and methacrylonitrile, maleimides such as N-phenylmaleimide and N-cyclohexylmaleimide, and unsaturated dicarboxylic acids such as maleic anhydride. Examples thereof include unsaturated carboxylic acids such as anhydrides, methacrylic acid and acrylic acid. These can be used alone or in combination of two or more.

(wax)
Examples of the wax contained in the coating layer include polyethylene-based wax, Fishertroph wax, oil-based synthetic wax (fatty acid ester-based, fatty acid amide, ketone / amines), synthetic wax such as hydrogen-hardened oil, beeswax, and wood wax. Examples thereof include natural waxes such as paraffin wax and microcrystallin wax. These waxes can be used alone or in combination of two or more, and a hydrocarbon wax containing paraffin is particularly preferable.

Moisture-proof paper of the present invention as described above, the unit moisture permeability per thickness ^{50 (g / m 2 · 24h} ) / μm or less, preferably ^{20 (g / m 2 · 24h} ) / μm or less, more preferably ^{10 (g / m 2 · 24h} ) / μm or less, also to prepare a container with a moisture-proof paper, even when left for 1 week to put water in the water seepage is the shape of the container does not occur It does not deform, or the shape of the container is maintained although it is slightly deformed. Therefore, it has excellent moisture resistance and waterproofness, which has the effect of suppressing a decrease in strength in applications where it comes into contact with moisture or moisture. The moisture permeability of the moisture-proof paper is measured from the coating layer side in accordance with JIS Z 0208.

<Manufacturing example>
An example of manufacturing the moisture-proof paper of the present invention will be described. First, a desired paper base material is prepared according to the use of the moisture-proof paper. Here, an example of making a paper base material will be described. In paper-based fabrication, as raw material pulp, for example, coniferous bleached kraft pulp (NBKP), broadleaf bleached kraft pulp (LBKP), coniferous unbleached kraft pulp (NUKP), broadleaf bleached kraft pulp (LUKP), crushed wood pulp ( From various pulps derived from wood fibers such as GP), refiner ground pulp (RGP), chemical pulp (CP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), Kenaf, bagus, bamboo, hemp, straw, etc. The obtained non-wood pulp can be used.

Used paper pulp can be used in the paper base making, and the recycled paper pulp content in the paper base material can be appropriately set according to the use of the moisture-proof paper. As used paper pulp, used paper pulp, high-quality paper, high-quality coated paper, medium-quality paper, medium-quality coated paper, stencil paper, etc., which are obtained by separating unprinted used paper such as corrugated waste paper, fine white, special white, medium white, and white loss. Printed waste paper, written waste paper, paper such as discarded confidential documents, magazine waste paper, newspaper waste paper deinked after desorption (DIP), etc. can be used.

Further, in paper-based papermaking, a sizing agent or a water-repellent agent for preventing moisture absorption can be added inside or outside, and a paper strength enhancer can be added inside or outside to improve the strength. Examples of the sizing agent include rosin-based sizing agents, rosin emulsion-based sizing agents, α-carboxymethyl saturated fatty acids, etc., neutral rosin-based sizing agents, alkyl ketene dimers (AKD), alkenyl succinic anhydride (ASA), and the like. Examples thereof include cationic polymer-based sizing agents. Examples of the water repellent include a fluorine-based resin, a polyamide-based resin, and a wax emulsion. In addition, examples of the paper strength enhancer include conventionally used paper strength enhancers such as polyacrylamide (PAM) and modified starch.

In addition, a known filler can be added to the paper base material as needed. Examples of fillers include kaolin, calcined kaolin, delaminated kaolin, clay, calcined clay, delaminated clay, illite, heavy calcium carbonate, light calcium carbonate, light calcium carbonate-silica complex, magnesium carbonate, carbonic acid. Inorganic fillers such as barium, titanium dioxide, zinc oxide, silicon oxide, amorphous silica, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, and organics such as urea-formalin resin, polystyrene resin, phenol resin, etc. Examples include fillers.

Further, even if a sulfate band, aluminum chloride, sodium aluminate, a basic aluminum compound, a water-soluble aluminum compound, a polyvalent metal compound, a silica sol, etc. are used internally as long as the quality of the paper base material is not affected. Good.

Next, a coating layer is formed on one desired surface or both sides of the paper substrate. The coating layer can be formed by applying a coating agent using a known coating method, for example, coating such as air knife coating, curtain coating, blade coating, gate roll coating and the like. A construction method can be used. Further, the coating layer may be formed by a single layer coating, and if necessary, two or more layers may be simultaneously coated by a curtain coating.

As the coating agent for the coating layer, for example, one in which synthetic resin and wax are mixed and dispersed in a solvent can be used. The coating agent may contain a pigment, a binder, a stabilizer, a defoaming agent, a water resistant agent, a viscosity improving agent, a water retaining agent, a preservative, a coloring agent and the like.

In the production of the moisture-proof paper of the present invention, the lower limit of the average coating layer thickness is in the range of 5.5 μm or more, preferably 5.7 μm or more, and the unit thickness of the coating layer measured in accordance with JIS Z 0208. the upper limit of moisture permeability per the is ^{10 (g / m 2 · 24h} ) / μm or less, preferably to form a coating layer so that the ^{8 (g / m 2 · 24h} ) / μm or less. Further, it is preferable to form the coating layer so that the upper limit of the average coating layer thickness is 20 μm or less, preferably 15 μm or less, and more preferably 12.5 μm or less. In order to form such a coating layer, for example, coating can be performed so that the coating ^{amount of the coating agent on the paper substrate is within the range of 20 g / m 2 or less, which is preferable.} It is preferable to apply the coating agent so that the lower limit of the coating amount is 4 g / m ² or more, the upper limit is 20 g / m ² or less, and more preferably 15 g / m ² or less.

Thus moisture-proof paper of the present invention the coating layer was formed on a paper substrate, the moisture permeability per unit thickness was measured according to JIS Z 0208 is ^{50 (g / m 2 · 24h} ) / [mu] m or less, preferably ^{20 (g / m 2 · 24h} ) / μm or less, more preferably ^{10 (g / m 2 · 24h} ) / μm or less, also to prepare a container with a moisture-proof paper, water The shape of the container is not deformed because water does not seep out even if the container is left for one week, or the shape of the container is maintained although some deformation is observed.

The use of the moisture-proof paper according to the present invention is not particularly limited, and for example, it can be used as a packaging individual box containing a hygroscopic material such as a corrugated cardboard box or a detergent.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.

[Manufacturing Example 1]
(Preparation of paper base material)
By using 63% by mass of unbleached softwood kraft pulp (NUKP) and 37% by mass of used paper pulp and applying a water resistant agent, viscosity improver, water retaining agent, preservative, and coloring agent to the surface, 3 The paperboard for the liner was made into a paper base material (reference sample 1) so that the basis weight ^{would be 280 g / m 2 by layer papermaking.}

(Formation of coating layer)
0.46 parts by weight of defoaming agent was added to 100 parts by weight of a moisture-proof agent (VAPORCOAT2200.S manufactured by Michaelman) in which a styrene resin and an acrylic resin and a hydrocarbon wax containing paraffin were mixed and dispersed in a solvent. A coating agent was prepared. Using this coating agent, apply by hand using a Mayer bar on one side of the above paper substrate (reference sample 1) so that the four types of coating amount shown in Table 1 below are obtained. Then, it was dried (105 ° C., 60 seconds) to form a coating layer. As a result, four types of moisture-proof paper (Sample 1-1 to Sample 1-4) were prepared.

[Manufacturing Example 2]
(Preparation of paper base material)
By using 21% by mass of unbleached softwood kraft pulp (NUKP) and 79% by mass of used paper pulp and applying a surface sizing agent to the surface, the basis weight is 260 g / m ^{2 in three-layer papermaking.} The paperboard for the liner was made into a paper substrate (reference sample 2).

(Formation of coating layer)
A coating agent was prepared by adding 0.46 parts by weight of a defoaming agent to 100 parts by weight of a moisture-proofing agent similar to that in Production Example 1. Using this coating agent, apply by hand on one side of the above paper substrate (reference sample 2) so that the coating amount will be 6 types as shown in Table 1 below, and dry (105). The coating layer was formed at ° C. for 60 seconds). As a result, 6 types of moisture-proof paper (Sample 2-1 to Sample 2-6) were prepared.

[Manufacturing Example 3]
A coating agent was prepared by adding 0.46 parts by weight of a defoaming agent to 100 parts by weight of a moisture-proof agent (Zyxen A manufactured by Sumitomo Seika Co., Ltd.) in which a polyolefin resin was mixed and dispersed in a solvent. Using this coating agent, apply by hand on one side of the paper base material (reference sample 1) similar to Production Example 1 so that the three types of coating amount shown in Table 1 below are obtained. , Dryed (105 ° C., 60 seconds) to form a coating layer. As a result, three types of moisture-proof paper (Sample 3-1 to Sample 3-3) were prepared.

[Manufacturing Example 4]
A coating agent was prepared by adding 0.46 parts by weight of an antifoaming agent to 100 parts by weight of a moisture-proofing agent similar to that in Example 4. Using this coating agent, apply by hand on one side of the paper base material (reference sample 2) similar to Production Example 2 so that the three types of coating amount shown in Table 1 below are obtained. , Dryed (105 ° C., 60 seconds) to form a coating layer. As a result, three types of moisture-proof paper (Sample 4-1 to Sample 4-3) were prepared.

[Manufacturing Example 5]
(Preparation of paper base material)
Using unbleached softwood kraft pulp (NUKP), ^{kraft paper was made to have a basis weight of 75 g / m 2} and used as a paper base material (reference sample 3).

(Formation of coating layer)
A coating agent was prepared by adding 0.46 parts by weight of a defoaming agent to 100 parts by weight of a moisture-proofing agent similar to that in Production Example 1. Using this coating agent, apply by the air knife coating method to one side of the above paper base material (reference sample 3) so that the four types of coating amount shown in Table 1 below are applied. A work layer was formed. As a result, four types of moisture-proof paper (Sample 5-1 to Sample 5-4) were prepared.

[Manufacturing Example 6]
0.46 parts by weight of antifoaming agent was added to 100 parts by weight of a moisture-proof agent (Cybinol EK-834 manufactured by Saiden Chemical Co., Ltd.) in which a styrene resin and / or an acrylic resin and rosin were mixed and dispersed in a solvent. The coating agent was prepared. Using this coating agent, apply by hand on one side of the same paper base material (reference sample 1) as in Production Example 1 so that the coating amount is as shown in Table 1 below, and dry ( The coating layer was formed at 105 ° C. for 60 seconds). As a result, a moisture-proof paper (Sample 6) was prepared.

[Manufacturing Example 7]
A coating agent was prepared by adding 0.46 parts by weight of a defoaming agent to 100 parts by weight of a moisture-proofing agent similar to that in Production Example 6. Using this coating agent, apply by hand on one side of the same paper base material (reference sample 2) as in Production Example 2 so that the coating amount is as shown in Table 1 below, and dry ( The coating layer was formed at 105 ° C. for 60 seconds). As a result, a moisture-proof paper (Sample 7) was prepared.

[Measurement of physical properties]
The moisture permeability of each of the prepared paper substrates (reference samples 1 to 3) and each moisture-proof paper was measured as follows, and the results are shown in Table 1 below.

<Humidity permeability>
Measure according to JIS Z 0208. For each moisture-proof paper, the measurement is performed from the coating layer side.

For each moisture-proof paper produced, the average coating layer thickness and the moisture permeability per unit thickness of the coating layer were measured and calculated as follows, and the results are shown in Table 1 below. The waterproof property was evaluated as follows, and the results are shown in Table 1 below.

<Average coating layer thickness>
The average value of the thickness of the coating layer measured at any 10 points is calculated.

<Humidity per unit thickness of coating layer>
Calculated by dividing the moisture permeability measured from the coating layer side by the average coating layer thickness in accordance with JIS Z 0208.

<Waterproof>
A container with a length of 28 cm, a width of 22 cm, and a depth of 13 cm is prepared using moisture-proof paper (the coating layer is located on the inner surface side), 1.0 L of water is put into this container, the temperature is 40 ° C, and the humidity is 80%. Observe the exudation state of water after leaving it for one week in the above environment, and judge according to the following criteria.
(Criteria for waterproofness)
◯: Water does not seep out to the outer surface of the container or the inner surface of the container above the water surface.
X: Water seeps out to the outer surface of the container and the inner surface of the container above the water surface.

As shown in Table 1, the average coating layer thickness of the coating layer is not less 5.5μm or more, and moisture permeability per unit thickness of the coating layer ^{10 (g / m 2 · 24h} ) / μm Moisture-proof paper (Sample 1-1 to Sample 1-3, Sample 2-1 to Sample 2-5, Sample 3-1 and Sample 3-2, Sample 4-1 and Sample 4-2, Sample 5- It was confirmed that 1. Sample 5-2) has excellent moisture resistance and waterproofness.

In contrast, the mean coating layer thickness of the coating layer is less than 5.5 [mu] m, or moisture-proof moisture permeability per unit thickness of the coating layer exceeds ^{10 (g / m 2 · 24h} ) / μm The sex paper (Sample 1-4, Sample 2-6, Sample 3-3, Sample 4-3, Sample 5-3, Sample 5-4, Sample 6, Sample 7) has poor waterproofness and moisture permeability. It was confirmed that the temperature was high and the moisture resistance tended to be inferior.

(Moisture-proof box)
Hereinafter, the moisture-proof box according to the present invention will be described with reference to the drawings. 2 to 6 show the moisture-proof box of the first aspect according to the present invention, FIG. 2 is a perspective view of the moisture-proof box, and FIG. 3 is a developed view of the moisture-proof box shown in FIG. FIG. 4 is an explanatory view showing a process of assembling the moisture-proof box shown in FIG. 2, FIG. 5 is a plan view showing an inner lid attached to the opening of the moisture-proof box shown in FIG. 2, and FIG. It is a top view which shows the state which attached the inner lid to the opening of a sex box.

The moisture-proof box 1 shown in FIG. 2 is made from a sheet of moisture-proof corrugated cardboard, that is, the moisture-proof paper of the present invention. Moisture-proof corrugated cardboard boxes are manufactured by a person who stores products at the place where the moisture-proof tier box is used, or by a box maker near the place where the moisture-proof tier box is used. As shown in the developed view of FIG. 3, the box 1 is provided with a first side wall portion 4 via a first folding line 3 on two opposite sides of the rectangular bottom portion 2, respectively, and the other opposite sides of the bottom portion 2 are opposed to each other. A second side wall portion 6 is provided on each of the two sides thereof via the second folding line 5.

The adjacent first side wall portion 4 and the second side wall portion 6 are connected to both side edge portions via the third folding line 7 and the fourth folding line 8, respectively, and are formed into a square having both side edge portions as two sides. The folding portion 10 is provided. The folding portion 10 is folded inward in half with the diagonal line between the third folding line 7 and the fourth folding line 8 as the fifth folding line 9, and is folded inward to form a triangle on the inner surface side of the second side wall portion 6.

Projecting pieces 11a and 11b are provided on the two open sides of the folding portion 10. The central portions of the two open sides of the folding portion 10 are cut to a depth exceeding the sheet thickness to form the recess 12, and the protrusions 13a and 13b on both sides of the recess 12 are the protrusions 11a and 11b. The recesses 12 formed on the two open sides of the portion 10 and the protrusions 13a and 13b are formed so as to overlap each other when the folded portion 10 is folded in half from the fifth folding line 9.

The cutting depth of the recess 12 formed by cutting out the central portion of the two open sides of the folding portion 10 is preferably 2 to 3 times the sheet thickness. When the cutting depth of the recess 12 is 2 to 3 times the sheet thickness, when the projecting pieces 11a and 11b are fitted into the fitting ports of the locking pieces described later, the projecting pieces 11a and 11b Since the tip of the rod protrudes from the fitting port of the locking piece portion with a width of at least the sheet thickness or more, a reliable locking state can be obtained between the protruding piece portions 11a and 11b and the locking piece portion. In addition, the inner lid, which will be described later, can be firmly put on the opening of the assembled box 1. In the box 1, the cutting depth of the recess 12 is three times the sheet thickness.

Further, a locking piece portion 15 connected via a sixth folding line 14 is provided on the open side of the second side wall portion 6, and is provided in the folding portion 10 between the locking piece portion 15 and the second side wall portion 6. Fitting ports 16a and 16b into which the projecting pieces 11a and 11b are fitted are formed, and by folding the locking piece 15 from the sixth folding line 14 in a valley fold, the fitting ports 16a and 16b are fitted with the second side wall portion 6. The projecting pieces 11a and 11b provided in the folding portion 10 folded on the inner surface side are fitted.

In the locking piece portion 15 provided on the open side of the second side wall portion 6, two protrusions 13a, which overlap each other along the open side of the second side wall portion 6 at the center of the locking piece portion 15. A hole-shaped fitting port 16a into which one protruding piece portion 11a made of 13a is fitted is formed in the center, and two protruding portions overlapping along the open side of the second side wall portion 6 on both sides of the locking piece portion 15. A groove-shaped fitting port 16b into which the other projecting piece portion 11b composed of 13b and 13b is fitted is formed.

Then, the hole-shaped fitting port 16a and the groove-shaped fitting port 16b form a connecting portion 17 that is connected to the second side wall portion 6, and the connecting portion 17 is formed on the two open sides of the folding portion 10. The width is such that it can be fitted into the recess 12, and the second side wall portion 6 is provided with a notch 18 that forms a part of the connecting portion 17 within a range not exceeding the depth of the recess 12, and the notch 18 is provided. The line connecting the tips is the sixth polygonal line 14.

The box 1 having such an unfolding structure is assembled as follows. First, the first side wall portion 4 provided on the two opposing sides of the bottom portion 2 is raised by valley folding from the first folding line 3, and the first side wall portion 4 provided on the other two opposing sides of the bottom portion 2 is provided. 2 The side wall portion 6 is folded in a valley from the second folding line 5 and started up. In synchronization with the rise of the first side wall portion 4 and the second side wall portion 6, the square folding portion 10 provided between the adjacent first side wall portion 4 and the second side wall portion 6 becomes a diagonal line. The fifth fold line 9 is folded in a mountain, the third fold line 7 and the fourth fold line 8 are folded in a valley and folded inward to form a triangle, which is folded into the inner surface side of the second side wall portion 6. When the folding portion 10 is folded inward in half to form a triangle, the recesses 12 formed on the two open sides of the folding portion 10 and the protrusions 13a and 13b overlap each other, and the overlapping protrusions 13a and 13b are formed. The projecting pieces 11a and 11b are provided on the open side of the folding portion 10 (see FIG. 4).

Next, the locking piece 15 provided on the open side of the second side wall 6 is folded in a valley from the sixth folding line 14 and tilted inward, and between the locking piece 15 and the second side wall 6. The projecting pieces 11a and 11b provided in the folding portion 10 are fitted into the formed fitting openings 16a and 16b.

In the locking piece portion 15, one protruding piece portion 11a composed of two overlapping protruding portions 13a and 13a is fitted in the center of the locking piece portion 15 along the open side of the second side wall portion 6. A hole-shaped fitting port 16a is formed in the center between the locking piece portion 15 and the second side wall portion 6, and two protrusions that overlap each other on both sides of the locking piece portion 15 along the open side of the second side wall portion 6. A groove-shaped fitting port 16b into which the other projecting piece portion 11b composed of the portions 13b and 13b is fitted is formed, and the second side wall portion 6 is between the hole-shaped fitting port 16a and the groove-shaped fitting port 16b. The connecting portion 17 has a width that allows it to fit into the recesses 12 formed on the two open sides of the folding portion 10, and the second side wall portion 6 has a recess. A notch 18 is provided to form a part of the connecting portion 17 within a range not exceeding the depth of 12, the line connecting the tips of the notch 18 is the sixth folding line 14, and the locking piece portion 15 is the sixth folding line. By folding the valley from 14 and tilting it inward and fitting the connecting portion 17 into the recess 12, the projecting pieces 11a and 11b provided in the folding portion 10 are locked by the locking piece 15 and the second side wall 6. It is fitted into the fitting ports 16a and 16b formed between them. In this way, the assembly of the box 1 is completed (see FIG. 4).

In this way, the box 1 has the second side wall portion 4 and the second side wall portion 4 and the second side wall portion 4 from the bottom portion 2 while folding the folding portion 10 provided between the adjacent first side wall portion 4 and the second side wall portion 6 inward in half. The side wall portion 6 is raised, the folded portion folded in half is folded into the inner surface side of the second side wall portion 6 and overlapped with the inner surface of the second side wall portion 6, and from this state, the side wall portion 6 is provided on the open side of the second side wall portion 6. The locking piece portion 15 is folded in a valley from the sixth folding line 14, and is formed on the inner surface side of the second side wall portion 6 at the fitting ports 16a and 16b formed between the locking piece portion 15 and the second side wall portion 6. It can be easily assembled by a simple operation such as fitting the projecting pieces 11a and 11b provided on the open side of the folded portion 10.

Further, in the projecting piece portions 11a and 11b provided on the two open sides of the folding portion 10, the central portion of the two open sides of the folding portion 10 is cut out to a depth exceeding the sheet thickness to form a recess 12. The protrusions 13a and 13b on both sides of the recess 12 are the protrusions 11a and 11b, and the recesses 12 formed on the two open sides of the folding portion 10 and the protrusions 13a and 13b are the folding portions 10. Is formed so as to overlap when folded in half from the fifth folding line 9.

Then, in the locking piece portion 15, one protruding piece portion 11a composed of two overlapping protruding portions 13a and 13a is fitted in the center of the locking piece portion 15 along the open side of the second side wall portion 6. A matching hole-shaped fitting port 16a is formed in the center, and the other projecting piece portion 11b is composed of two projecting portions 13b and 13b that overlap each other along the open side of the second side wall portion 6 on both sides of the locking piece portion 15. A groove-shaped fitting port 16b is formed, and the hole-shaped fitting port 16a and the groove-shaped fitting port 16b form a connecting portion 17 that is connected to the second side wall portion 6, and the connecting portion is formed. 17 has a width that can be fitted into the recesses 12 formed on the two open sides of the folding portion 10, and the second side wall portion 6 has a connecting portion 17 within a range not exceeding the depth of the recess 12. Since the notch 18 forming a part of the notch 18 is provided and the line connecting the tip of the notch 18 is the sixth folding line 14, the locking piece portion 15 provided on the open side of the second side wall portion 6 is the third. By folding the 6-fold line 14 in a valley and tilting it inward and fitting the connecting portion 17 into the recess 12, the projecting pieces 11a and 11b provided in the folding portion 10 are locked with the locking piece 15 and the second side wall. The projecting pieces 11a and 11b fitted to the fitting ports 16a and 16b formed between 6 and fitted to the fitting ports 16a and 16b have their tips from the fitting ports 16a and 16b of the locking piece portion 15. Since it is in a protruding state, a reliable locking state can be obtained between the projecting pieces 11a and 11b and the locking piece 15, and the second side wall 6 and the second side wall 6 are folded into the inner surface side. The folded portion 10 can be securely fixed, and a robust box 1 can be obtained.

In particular, since the cutting depth of the recess 12 is three times the thickness of the sheet, the tip of the protruding piece portions 11a and 11b fitted to the fitting ports 16a and 16b is the fitting port of the locking piece portion 15. Since it protrudes from the sheet with a width of at least the sheet thickness or more, a more reliable locking state can be obtained between the projecting piece portions 11a and 11b and the locking piece portion 15, and a more robust box 1 can be obtained.

Further, since the outer surfaces of the first side wall portion 4 and the second side wall portion 6 of the assembled box 1 do not generate an obstructive protruding portion, a box convenient for handling can be obtained. ..

Further, the box 1 is provided with an inner lid 20 that can be detachably attached. The inner lid 20 is made of a rectangular plate-like body that fits inside the opening of the box 1, and a hole-shaped fitting formed in the locking piece 15 is formed on the side of the inner lid 20 on the side of the second side wall. Fitting that fits into the abutment 16a and the groove-shaped fitting port 16b, and fits between the projecting piece 11a and the projecting piece 11b provided on the open side of the folding portion 10 protruding from the locking piece 15. Piece 21 is formed (see FIG. 5). As the plate-shaped body, the same sheet-shaped moisture-proof corrugated cardboard as in Box 1 is used.

When the inner lid 20 is attached to the opening of the box 1 and closed, the inner lid 20 is fitted into the opening of the box 1 (see FIG. 6). The inner lid 20 fitted into the opening of the box 1 abuts on the locking piece 15 whose inner surface is bent inward of the box 1 and is formed on the side of the inner lid 20 on the second side wall side. The fitting piece 21 is fitted into the recess 12 formed on the open side of the folding portion 10 and comes into contact with the connecting portion 17 of the locking piece portion 15 fitted in the recess 12. In this way, the inner lid 20 is attached to the opening of the box 1, and the opening of the box 1 is closed.

When closing the opening of the box 1, the inner lid 20 can be attached to the opening of the box 1 and the opening of the box 1 can be closed by a simple operation such as fitting the inner lid 20 to the opening of the box 1. Further, when removing the inner lid 20 that closes the opening of the box 1, a finger is attached to the end of the fitting piece 21 of the inner lid 20 that is fitted in the recess 12 and appears on the outer surface of the second side wall portion 6. The inner lid 20 can be removed from the opening of the box 1 and the opening of the box 1 can be opened by a simple operation such as hanging and pulling up.

FIG. 7 is a plan view of the outer lid covered on the box 1, and FIG. 8 is an explanatory view showing a state in which the outer lid is put on the box 1.

The outer lid 40 is made of a single piece of moisture-proof corrugated cardboard, like the box 1. As shown in the plan view of FIG. 7, the outer lid 40 is provided with side wall portions 43 via folding lines 42 on four sides of a rectangular top portion 41 formed to have the same size as the outer shape of the opening of the box 1. Has been done.

In the outer lid 40, the side wall portions 43 provided on the four sides of the top portion 41 are mountain-folded from the folding line 42, and in this state, the side wall portion 43 is folded into the first side wall portion 4 and the second side wall portion 6 of the box 1. The box 1 is covered with the outer surface of the box 1, or the top portion 41 is applied to the opening of the box 1, the side wall portion 43 is folded from the folding line 42, and the side wall portion 43 is the first side wall portion of the box 1. The box 1 is covered with the outer surface of the 4 and the second side wall portion 6 so as to overlap each other (see FIG. 8).

Adhesive tape is wrapped around the side wall 43 of the outer lid 40 that covers the box 1 so that the side wall 43 that overlaps the outer surfaces of the first side wall 4 and the second side wall 6 of the box 1 does not spread. As described above, according to the outer lid 40, the box 1 can be covered with a simple operation.

In the above-mentioned first form, the inner lid 20 and the outer lid 40 to be put on the box 1 are provided separately from the box 1, but a box having an integral structure formed by folding the inner lid and the outer lid may be used.

9 is an exploded perspective view of the box with a lid according to the second aspect of the present invention, FIG. 10 is a developed view of the lid shown in FIG. 9, FIG. 11 is an explanatory view showing a process of assembling the lid shown in FIG. 9, and FIG. Is a vertical cross-sectional explanatory view of a box with a lid. In the box 100 with a lid, the box body 102 and the lid 103, which are made of a sheet of moisture-proof corrugated cardboard, that is, the moisture-proof paper of the present invention, are formed separately. Here, the box body 102 has the same configuration as the moisture-proof box 1 (see FIGS. 2 to 4) of the first aspect of the present invention, and the heights of the first side wall portion 4 and the second side wall portion 6 are high. It is formed so that the value is H.

The lid 103 is configured to be detachably fitted to the outer periphery of the box body 102 so as to cover the first side wall 4, the second side wall 6, and the upper opening of the box body 102. The dimension of the inner depth D is the same as the height H of the box body 102.

As shown in the developed view of FIG. 10, the lid 103 is provided with side surface portions 24 via folding lines 23 on the two opposing sides of the rectangular top plate portion 22, and the other relative of the top plate portion 22. A side surface portion 26 is provided on each of the two facing sides via a folding line 25.

Folded pieces 28 are connected to both side edges of the side surface portion 24 in the lateral width direction via folding lines 27, respectively. Of the side edge edges of the folded piece 28, the projecting piece 30 is connected to a part of the side edge edge on the side surface portion 26 side via the folding line 29. In this example, a part 31a of the cutting line portion 31 that separates the folded piece 28 and the side surface portion 26 is inflated so as to enter the side surface portion 26, and the folded piece 28 side of the inflated portion is a projecting piece 30.

Further, between the top plate portion 22 and the side surface portion 26, that is, on the folding line 25, a position corresponding to the projecting piece 30 connected to the side edge of the folded piece 28, that is, as described later, the top plate. The side surface portions 26 provided on the two opposing sides of the portion 22 are folded in a valley from the folding line 25 to stand up, and the side surface portions 24 provided on the other two opposing sides of the top plate portion 22 are folded into the folding line 23. When the folded piece 28 connected to both side edge edges of the side surface portion 24 is valley-folded from the folding line 27 and folded over the side surface portion 26, the folded piece 28 is formed on the side edge edge of the folded piece 28. A notch 32 is provided at a position where the connected projecting pieces 30 can be inserted.

The lid 103 having such a deploying structure is assembled as follows. First, the side surface portions 26 provided on the other two opposite sides of the top plate portion 22 are valley-folded from the folding line 25 to stand up. Next, the side surface portions 24 provided on the two opposite sides of the top plate portion 22 are valley-folded from the folding line 23 to stand up.

Next, the folded piece 28 connected to both side edge edges of the side surface portion 24 is valley-folded from the folding line 27 and folded over the side surface portion 26, and the projecting piece connected to the side edge edge of the folded piece 28. 30 is valley-folded from the folding line 29 and inserted into the notch 32 provided on the folding line 25 between the top plate portion 22 and the side surface portion 26. In this way, the assembly of the lid 103 is completed (see FIG. 11).

According to the box with a lid 100 composed of the assembled box body 102 and the lid 103, when the box body 102 is covered with the lid 103, the dimension of the inner depth D of the lid 103 is the height H of the box body 102. Since it is the same as the above, the open end 33 of the lid 103 comes into contact with the floor surface 34 (see FIG. 12).

Therefore, the weight applied to the upper surface of the box 100 with a lid is supported by both the side surfaces 4 and 6 of the box body 102 and the side surfaces 24 and 26 of the lid 103, so that the load-bearing strength is increased and the load can be loaded in multiple stages. It is possible to obtain a box with a lid 100 that does not easily collapse.

FIG. 13 is a perspective view of the moisture-proof box of the third embodiment of the present invention, and FIG. 14 is a developed view of the moisture-proof box shown in FIG. The box 200 is made of a sheet of moisture-proof corrugated cardboard, that is, the moisture-proof paper of the present invention. As shown in the developed view of FIG. 14, the box 200 is provided with a first side wall portion 206 via a folding line 204 on each of the two opposing sides of the rectangular bottom portion 202, and the other two opposing sides of the bottom portion 202 are provided. A second side wall portion 210 is provided on each side via a folding line 208.

Between the adjacent first side wall portion 206 and the second side wall portion 210, the folding portions 218 are connected to both side edge portions via the folding line 212 and the folding line 214, respectively, and are formed into a square having both side edge portions as two sides. Is provided. The folding portion 218 is folded inward in half with the diagonal line between the folding line 212 and the folding line 214 as the folding line 216 to form a triangle, and is folded into the inner surface side of the second side wall portion 210.

A folding piece 224 connected via a folding line 220 and 222 is provided on the open side of the second side wall portion 210, and a semicircular recess 226 is formed in the central portion of the opening side of the folding piece 224. .. Here, the dimension W1 of the second side wall portion 210 and the dimension W2 of the folding piece 224 are formed to have substantially the same dimensions.

The box 200 having such an unfolding structure is assembled as follows. First, the first side wall 206 provided on the two opposite sides of the bottom 202 is raised by valley folding from the folding line 204, and the second side wall provided on the other two opposite sides of the bottom 202 is raised. The part 210 is folded in a valley from the folding line 208 and started up. In synchronization with the rise of the first side wall portion 206 and the second side wall portion 210, the square folding portion 218 provided between the adjacent first side wall portion 206 and the second side wall portion 210 becomes a diagonal line. Fold the fold line 216 in a mountain fold, fold the fold line 212 and the fold line 214 in a valley, and fold them inward to form a triangle, which is folded into the inner surface side of the second side wall portion 210. Then, by folding the folding piece 224 toward the inner surface side of the second side wall portion 210, the folding portion 218 folded into the inner surface side of the second side wall portion 210 can be pressed. In this way, the assembly of the box 200 is completed (see FIG. 13).

This box 200 can be easily disassembled by putting a finger on the recess 226 provided in the folding piece 224 and lifting it up.

In the box 200 of the third form described above, the dimension W1 of the second side wall portion 210 and the dimension W2 of the folding piece 224 are formed to have substantially the same dimensions, but on the inner surface side of the second side wall portion 210. The dimension may be shorter than the dimension W2 as long as the fold-in portion 218 can be pressed.

When the box 200 is covered with the lid 103 of the second form, the side of the box 200 that does not have the folding piece 224 so that the projecting piece 103 of the lid 103 does not interfere with the upper end of the side wall 226 of the box 200. A recess may be formed in the upper part of the side wall 226 of the lid 103 at a position corresponding to the projecting piece 103 of the lid 103.

1 ... Moisture-proof box, 2 ... Bottom, 3 ... 1st fold line, 4 ... 1st side wall, 5 ... 2nd fold, 6 ... 2nd side wall, 7 ... 3rd fold, 8 ... 4th fold, 9 ... 5th folding line, 10 ... folding part, 11a, 11b ... projecting piece, 12 ... recess, 13a, 13b ... projecting part, 14 ... 6th folding line, 15 ... locking piece, 16a, 16b ... fitting port, 17 ... connecting part, 18 ... notch, 20 ... inner lid, 21 ... fitting piece, 22 ... top plate part, 24, 26 ... side part, 28 ... folded piece, 30 ... projecting piece, 32 ... notch, 40 ... outside Lid, 41 ... Top plate, 42 ... Folded line, 43 ... Side wall, 100 ... Box with lid, 102 ... Box body, 103 ... Lid, 200 ... Box, 224 ... Folded piece

Claims (13)

1. It is a transportation method that transports articles using a moisture-proof box.
   Moisture-proof paper with a coating layer on at least one side of the paper substrate is transported in a wound shape, corrugated with a corrugator, folded, punched, and then where the moisture-proof box is used, or The process of preparing the moisture-proof box having an integrated structure in which the bottom and side surfaces are all folded into a box made of moisture-proof corrugated cardboard that has been transported to the vicinity in the form of a sheet.
   The step of accommodating the article in the prepared moisture-proof box, and
   The process of shipping the moisture-proof box containing the article to the place of consumption, and
   Transport method including.
2. The coating layer has an average coating layer thickness is not less 5.5μm or more and a method of transporting moisture permeability ^{10 (g / m 2 · 24h} ) / μm or less according to claim 1 per unit thickness ..
3. The transport method according to claim 1 or 2, wherein the coating layer contains a synthetic resin and wax.
4. The transport method according to claim 3, wherein the synthetic resin contains at least one of a styrene resin, an acrylic resin, a butadiene resin, a polyolefin resin, a polyvinyl alcohol resin, a polylactic acid resin, a polyester resin, and a polyethylene resin. ..
5. The transport method according to claim 3 or 4, wherein the wax is a hydrocarbon wax containing paraffin.
6. The moisture-proof box to be manufactured is assembled from one piece of the moisture-proof paper, and is provided with a first side wall portion connected to each other on two opposite sides of a rectangular bottom portion via a first folding line. A second side wall portion connected to each other via a second folding line is provided on each of the other two opposing sides of the bottom portion, and between the adjacent first side wall portion and the second side wall portion, both end edges are provided. It is connected via the 3rd and 4th fold lines to form a square with both side edges as 2 sides, and the diagonal line between the 3rd fold line and the 4th fold line is used as the 5th fold line and folded inward in half. A folding portion is provided which is formed into a triangular shape and is folded into the inner surface side of the second side wall portion.
   A projecting piece portion is provided on the two open sides of the folded portion, and a locking piece portion connected via a sixth folding line is provided on the open side of the second side wall portion, and the locking piece portion and the first A fitting port for fitting the projecting piece portion provided in the folding portion is formed between the two side wall portions.
   By folding the locking piece portion in a valley from the sixth folding line, the protruding piece portion provided on the open side of the folding portion folded into the inner surface side of the second side wall portion is fitted into the fitting port. The transport method according to any one of claims 1 to 5.
7. In the projecting piece portion provided on the two open sides of the folding portion, the central portion of the two open sides of the folding portion is cut out to a depth exceeding the thickness of the moisture-proof raw paper to form a recess. The protrusions on both sides of the recess are the protrusions, and the recess and the protrusion formed on the two open sides of the folding portion overlap when the folding portion is folded in half from the fifth folding line. Is formed like
   The locking piece portion provided on the open side of the second side wall portion is formed with a hole-shaped fitting port into which one of the two overlapping protrusions is fitted, and both sides thereof. A groove-shaped fitting port into which the other protruding piece portion is fitted is formed, and the hole-shaped fitting port and the groove-shaped fitting port are connected to the second side wall portion. The connecting portion has a width that allows it to be fitted into the recess formed on the two open sides of the folding portion, and the second side wall portion has a range that does not exceed the depth of the recess. The transport method according to claim 6, wherein a notch forming a part of the connecting portion is provided, and the line connecting the tip of the notch is the sixth folding line.
8. The moisture-proof box further comprises two said first side walls and an inner lid covering an opening formed by the two said second side walls.
   The transport method according to claim 6 or 7, wherein the inner lid is made of the moisture-proof paper.
9. The moisture-proof box further comprises an outer lid covering the opening.
   The transport method according to any one of claims 6 to 8, wherein the outer lid is made of the moisture-proof paper.
10. The transport method according to any one of claims 6 to 9, wherein the fold line includes the first fold line, the second fold line, the third fold line, the fourth fold line, the fifth fold line and the sixth fold line. ..
11. The moisture-proof box is a rectangular box body assembled from a piece of the moisture-proof paper, and a single piece that is detachably fitted to the outer periphery of the box body to cover the side surface portion and the upper opening of the box body. The transport method according to any one of claims 1 to 5, which has a lid assembled from the moisture-proof paper, and the height of the box body and the inner depth of the lid are the same.
12. The moisture-proof box is assembled from one piece of the moisture-proof paper, and is provided with a first side wall portion connected to each of the two opposing sides of the rectangular bottom portion via a first folding line, and the other of the bottom portion. A second side wall is provided on each of the two opposing sides of the paper, which is connected via a second polygonal line.
    Between the adjacent first side wall portion and the second side wall portion, both side edge edges are connected to each other via a third fold line and a fourth fold line, respectively, and formed into a square having both side edge edges as two sides. A folding portion is provided in which the diagonal line between the third folding line and the fourth folding line is used as the fifth folding line and is folded inward in half to form a triangle, which is folded into the inner surface side of the second side wall portion.
    A rectangular fold piece connected via the 7th fold line and the 8th fold line is provided on the open side of the 2nd side wall portion, and the fold piece is folded by valley folding of the 7th fold line and the 8th fold line. The transport method according to any one of claims 1 to 5, which is folded into the inner surface side of the second side wall portion.
13. The transport method according to claim 12, wherein the dimensions of the folded piece from the 8th folding line to the open side are the same as the dimensions from the 2nd folding line to the 7th folding line.

Images