JP2607429B2 - Method for forming anti-slip layer made of transparent synthetic resin layer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an anti-slip layer in a paper container, and provides a method for easily obtaining an anti-slip layer comprising a transparent synthetic resin layer having excellent anti-slip performance.

[0002]

2. Description of the Related Art When a product packed in a cardboard container such as a cardboard box is transported to a remote place, the paper containers are stacked in a plurality of stages,
Operations such as carrying out, carrying in, and transporting products are performed.

[0003] During the work of carrying out, carrying in, and transporting these products, the paper containers stacked in a plurality of stages slide out due to shock applied to the paper containers or the inclination of the load, and this causes a load collapse. It has become.

[0004] For this reason, for example, (1) when carrying out operations such as carrying out, carrying in, and transporting a product, a plurality of stacked paper containers are wrapped with a synthetic resin film or sheet, or a band is formed. (2) Temporarily fix the paper containers stacked on top and bottom with adhesive, (3) Outer surface of the container Paper container on which an anti-slip layer made of a sprayed layer of sand particles or the like is formed (JP-A-49-260).
(4) A paper container in which an anti-slip layer as described in JP-B-56-18152, that is, an anti-slip layer of a foamed synthetic resin layer is formed on the outer surface of the container. Use is made.

[0005]

However, the above-mentioned problem is not solved.
The method of preventing the collapse of stacked paper containers by the mechanical means described in paragraph (1) is to cover the stacked paper containers in a plurality of stages by wrapping them with a synthetic resin film or sheet, or by wrapping them with a band. Not only is it troublesome to apply mechanical means such as securing with a wooden frame, etc., but also when reloading multiple paper containers after unpacking, Prevention means must be added, and the cargo cannot be transshipped throughout the entire process of carrying out, carrying in, and transporting.

Further, the method for preventing the collapse of the load by temporarily fixing the paper containers to each other with an adhesive in the above item (2) is that the bonding operation is performed simultaneously with the loading operation of the paper containers. The operation is complicated, and the effect is completely lost after the transfer of the cargo.

Further, the paper container having the sprayed layer of sand particles or the like formed on the outer surface of the paper container according to the above item (3) is characterized in that the paper container is subjected to friction between the paper containers during the steps of carrying out, carrying in, and transporting the paper container. Since the sand particles sprayed on the outer surface of the container fall off, sufficient anti-slip performance cannot be exhibited when used repeatedly, and characters and pictures usually attached to the outer surface of the paper container Since the printed layer is concealed by the anti-slip layer, the effect of the printed layer attached to the outer surface of the paper container is impaired, and further, when the paper containers are stacked and handled, another However, since the anti-slip layer damages the surface of the paper container, there is a drawback that the commercial value is lowered.

Further, in the case of using the anti-slip layer of the foamed synthetic resin layer according to the above item (4), the foamed resin layer itself has low mechanical strength due to, for example, tear strength, tensile strength, etc. When the adhesive strength between the paper container and the paper container is not sufficient, the paper container is easily dropped off due to the friction applied to the paper container during the process of carrying out, carrying in, and transporting the paper container, and the strength sufficient to withstand repeated use cannot be obtained.

In the case of using the anti-slip layer made of the foamed synthetic resin layer according to the item (4), since the anti-slip layer is formed as an opaque layer, the sprayed layer of sand particles or the like according to the above-mentioned item (3) is applied to paper. As with paper containers formed on the outer surface of the container,
There is also a drawback in that the printed layer of characters, pictures, and the like usually attached to the outer surface of the paper container is concealed by the anti-slip layer, and the effect of the printed layer is impaired.

Accordingly, the present invention provides a complicated machine for stacking paper containers in a plurality of stages, such as wrapping a plurality of paper containers with a synthetic resin film or sheet, or wrapping them in a band. No special measures are required, and after the transfer, they exhibit the same permanent anti-slip properties and abrasion resistance as before the transfer, and are usually attached to the outer surface of the paper container. It is an object of the present invention to provide a method for forming a slip-resistant layer which does not cause inconvenience such as hiding a printed layer of characters, pictures and the like by the slip-resistant layer.

[0011]

The above objects can be achieved by the present invention described below. That is, the present invention contains a synthetic resin component for a binder with respect to a paperboard container, a blank sheet before a box-making process, a cardboard for boxmaking, or a paper before being laminated on a laminated paper for boxmaking. A large number of thermoplastic synthetic resin microsphere spheres having a diameter of 10 to 50 μm in which one or more of an inert gas, an active gas, a non-vaporizable liquid, or a vaporizable liquid are contained in an aqueous dispersion or an organic solvent liquid. After forming a coating layer with a coating agent in which is mixed and dispersed, an inert gas, an active gas, which is contained in a thermoplastic synthetic resin fine particle hollow body in the coating layer,
A method for forming an anti-slip layer comprising a transparent synthetic resin layer in which the coating layer is dried and solidified at a temperature at which the thermoplastic synthetic resin hollow microspheres do not expand due to the pressure of the non-vaporizable liquid or the vaporizable liquid. It is.

That is, the method for forming the anti-slip layer comprising a transparent synthetic resin layer according to the present invention comprises the steps of: adding an inert gas, an active gas, or an inert gas to an aqueous dispersion or an organic solvent solution containing a synthetic resin component exhibiting the action of a binder. Non-vaporizable liquid or one or more vaporizable liquids with a built-in diameter of 10 to 50μ
m, a first step of preparing a coating agent prepared by mixing and dispersing a group of thermoplastic synthetic resin fine-grained spheres, and a coating layer formed by the coating agent, a cardboard container, a blank sheet before the box-forming step, A cardboard for box, or a second step for forming the paper before being manufactured into a laminated paper that is cardboard for box making, and a third step of drying and solidifying the coating layer,
The third step, drying and solidification of the coating layer, is used for forming the coating layer. The fine spherical hollow particles made of thermoplastic synthetic resin are sealed inside the hollow fine spherical particles made of thermoplastic synthetic resin. This is performed at a temperature that does not expand due to the pressure of an inert gas, an active gas, a non-vaporizable liquid, or a vaporizable liquid.

In the method of forming a slip-resistant layer comprising a transparent synthetic resin layer according to the present invention, the slip-resistant layer comprises a bottom wall and a top wall of a paper container having a body wall, a bottom wall, and an upper wall. It is sufficient to form it on a portion corresponding to the outer surface of at least one of the wall portions, and only one portion of the wall portion is formed, for example, in a spot shape, a grid shape, a stripe shape, or the like. May be.

Next, the method for forming the anti-slip layer comprising the transparent synthetic resin layer of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a cardboard container having a slip-resistant layer obtained by using the method for forming a slip-resistant layer made of a transparent synthetic resin layer according to the present invention. ,
It consists of a cardboard box having a body wall 2, an upper wall 3 as a lid, and a bottom wall 4. Then, the outer surface portion represented by reference numeral 3 _one of the upper wall portion 3 is a lid in the cardboard box, slip prevention layer made of a transparent synthetic resin layer represented by reference numeral 7 are formed.

The anti-slip layer made of the transparent synthetic resin layer 7
As shown in the enlarged view according to FIG.
A group of hollow particles 5, 5, 5,... Of thermoplastic synthetic resin having a diameter of 10 to 50 μm and containing at least one of an active gas, a non-vaporizable liquid, and a vaporizable liquid exhibits a function of a binder. It is connected by the synthetic resin component 6 and has transparency as a whole.

In FIG. 2, a portion indicated by reference numeral 8 is a corrugated cardboard formed by bonding and laminating two paper layers 9 and 10 via a corrugated sheet 11, and the above-mentioned portion is shown. It is a constituent material of the cardboard container 1.

In the cardboard container 1, an anti-slip layer made of a transparent synthetic resin layer 7 is partially formed on the outer surface of the upper wall portion 3 of the cardboard container. Is sufficient to be formed on the outer surface of at least one of the bottom wall portion 4 and the upper wall portion 3 of the cardboard container 1 and the wall portion of the cardboard container 1. May be formed over the entire outer surface, or may be formed partially such as in a spot shape, a lattice shape, a stripe shape, or the like.

The anti-slip layer made of the transparent synthetic resin layer 7 is composed of a group of hollow fine spherical particles 5, 5, 5,... Made of a thermoplastic synthetic resin, and a synthetic resin (film-forming component) exhibiting the action of a binder. Mixed almost uniformly in the aqueous dispersion or organic solvent liquid containing,
The dispersed coating agent is placed at a predetermined location on a cardboard container, a cardboard for box making, a blank sheet before the box making process, and further, a predetermined portion of the paper before the laminating process to obtain a laminated paper for the paper container. Is applied by means of printing means, roll coater, curtain coater, spray, etc., and then applied to the inert gas, active gas, non-vaporizable liquid contained in the thermoplastic synthetic resin microsphere hollow body. Alternatively, it is formed by drying and solidifying at a temperature at which the thermoplastic synthetic resin hollow fine spheres do not expand due to the pressure of the vaporizable liquid.

The group of fine spherical hollow bodies 5, 5, 5,... Made of a thermoplastic synthetic resin is defined as an aqueous dispersion or an organic solvent liquid containing a synthetic resin (film-forming component) exhibiting the function of a binder. When preparing a coating agent mixed and dispersed substantially uniformly therein, the hollow fine particle spherical body 5 made of thermoplastic synthetic resin is used.
The thermoplastic synthetic resin microsphere hollow body 5 and the binder function so that they are not dissolved by the aqueous dispersion or the organic solvent liquid containing the synthetic resin (film forming component) exhibiting the function of the binder. It goes without saying that an aqueous dispersion or an organic solvent liquid containing the synthetic resin (film-forming component) to be presented is selected.

The fine spherical hollow bodies 5, 5, 5,... Made of thermoplastic synthetic resin have the wall film 12 formed of thermoplastic synthetic resin as exemplified in FIGS. 3 and 4. An inert gas, an active gas, and the like formed of resin and surrounded by the wall film 12.
A non-vaporizable liquid, or a hollow fine-particle sphere having a diameter of 10 to 50 μm in which at least one kind of the vaporizable liquid is contained,
For example, Japanese Patent Publication No. Sho 42-26524 and Japanese Unexamined Patent Publication No.
Of the thermoplastic polymer described in JP-A-113338.
R> particles that have not been subjected to heat treatment can be used as they are.

That is, the fine spherical hollow particles 5 made of thermoplastic synthetic resin include, for example, hydrocarbons such as ethane, ethylene, propane, butane, isobutane, butene, acetylene and heptane, CCl ₃ F, CCl ₂ F ₂ , chlorofluorocarbons such as CClF _3, tetramethylsilane, trimethylethyl silane, tetraalkyl silanes such as trimethyl isopropyl silane, petroleum ether, water, nitrogen, inert gas by carbon dioxide gas, inert gas, a non-vaporizable liquid or, One or more internal components of the vaporizable liquid are, for example, fine particles of a thermoplastic synthetic resin made of a polymer or copolymer of vinylidene chloride, acrylonitrile, vinyl chloride, acrylate, methacrylate, styrene, vinyl acetate, etc. It is built into the hollow body.

The synthetic resin component 6, which is a film-forming component in the coating agent used for forming the transparent synthetic resin layer 7, acts as a binder in the transparent synthetic resin layer 7, which is the anti-slip layer. General synthetic resin, for example,
Vinyl acetate resin, ethylene / vinyl acetate resin, acrylic resin, styrene resin, vinyl chloride resin, vinyl acetate / acrylic resin, vinyl chloride / vinyl acetate resin, ethylene / acrylic resin, vinylidene chloride resin, polyester resin, polyurethane resin, chloroprene polymer , Nitrile rubber, styrene / butadiene copolymer, methacryl / styrene copolymer, and the like.

The ratio of the synthetic resin component 6, which is a film-forming component acting as a binder when forming the transparent synthetic resin layer 7, to the thermoplastic synthetic resin fine sphere hollow body 5 is the same as that of the fine sphere hollow body 5. Although it depends on the size, it is preferable that about 50 to 500 parts by weight of hollow fine spheres are used with respect to 100 parts by weight of the synthetic resin component, which is a film forming component that functions as a binder.

[0025] The fine spherical hollow body made of a thermoplastic synthetic resin having a diameter of 10 to 50 µm and containing at least one of an inert gas, an active gas, a non-vaporizable liquid, and a vaporizable liquid is used. The hollow microspheres are formed so that the thermoplastic synthetic resin that constitutes is not dissolved or swelled by the inert gas, the active gas, the non-vaporizable liquid, or the vaporizable liquid that is a built-in substance. Needless to say, the selected thermoplastic synthetic resin and the type of the built-in material are combined and selected.

When the hollow fine particle sphere 5 is placed in a heating atmosphere, the thermoplastic synthetic resin constituting the hollow fine sphere 5 is softened, and the hollow fine particle sphere 5 When the inert gas, the active gas, the non-vaporizable liquid, or the vaporizable liquid 13 which is a built-in component is pressurized, the expanded particles become expanded particles. Deformation cannot be achieved.

As a result, not only the anti-slip performance of the anti-slip layer is not sufficient, but also the anti-slip layer has low resistance to repeated friction, and the anti-slip layer cannot have transparency.

Therefore, in the method for forming a slip-resistant layer made of a transparent synthetic resin layer of the present invention, the hollow microspheres 5 in the synthetic resin layer 7 forming the slip-resistant layer do not become expanded particles expanded by heating. Thus, it is necessary to dry and solidify the coating layer formed by the coating agent.

That is, in the process of drying and solidifying the coating layer, the thermoplastic synthetic resin constituting the wall of the hollow fine sphere 5 is softened, and inert gas inside the hollow fine sphere 5 is removed.
It is necessary to keep the temperature of the microspheres 5 from rising to such a value that the hollow microspheres 5 expand with the pressurization of the internal material 13 made of an active gas, a non-vaporizable liquid, or a vaporizable liquid.

[0030]

EXAMPLES Specific examples of the method for forming a slip-resistant layer comprising a transparent synthetic resin layer of the present invention will be described with reference to examples.

Example 1 The following conditions were applied to the entire top and bottom surfaces of a ready-made cardboard box 34 cm long, 28.5 cm wide and 14.0 cm high.
A coating agent [A] comprising a 50% by weight aqueous dispersion of a solid component containing (1) and (2) is applied at a rate of 3.5 g (solid component) / m ² and then dried at room temperature. As a result, a cardboard container {1} on which an anti-slip layer made of a transparent synthetic resin layer was formed was obtained.

(1) Ethylene / vinyl acetate copolymer emulsion: 100 parts by weight (solid component) "Particle size: 0.7 μm, nonvolatile content: 50%, viscosity ..."
・ ・ 500cps 」(2) Polyvinylidene chloride hollow hollow sphere ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 1
00 parts by weight "Built-in: butane, sphere diameter: 10-20 µm"

Example 2 A coating agent [B] having the following composition was applied over the entire top surface of the same ready-made cardboard box used in Example 1.
After coating at a rate of 5 g (solid component) / m ² , it was dried at room temperature to obtain a cardboard container {2} on which a slip-resistant layer made of a transparent synthetic resin layer was formed.

Coating agent [B] (1) Ethylene / vinyl acetate copolymer emulsion ... 1
00 parts by weight (solid component) “Particle size: 0.65 μm, nonvolatile content: 55%, viscosity: 6000 cps” (2) Polyvinylidene chloride hollow microspheres・ ・ ・ ・ ・ ・ ・ 1
00 parts by weight "Built-in material ... butane, ball diameter ... 10 to 20 m" (3) Water ... 20 parts by weight

Example 3 The entire top surface and the bottom surface of the same ready-made corrugated cardboard box used in Example 1 were formed in a stripe shape of 15 mm width at intervals of 5 mm over the entire surface. A coating agent [A] having the same composition as that used in Example 1 of
After coating at a coating amount of 3.5 g (solid component) / m ^{2 at} the coating portion, the container was dried at room temperature to form a cardboard container {3} on which a slip-resistant layer made of a transparent synthetic resin layer was formed. Obtained.

Example 4 The same ready-made cardboard box as used in Example 1 was formed on the top and bottom surfaces of the same cardboard box in a stripe shape having a width of 15 mm and spaced by 5 mm over the entire surface. The coating agent [A] having the same composition as that used in Example 1 was applied at a coating amount of 3.5 g (solid component) / m ^{2 in} the coating portion, and then dried at room temperature. A cardboard container {4} on which a slip-resistant layer made of a transparent synthetic resin layer was formed was obtained.

Example 5 The same ready-made cardboard box as used in Example 1 was placed on the top surface with a width of 15 mm spaced over the entire surface by 5 mm.
After coating a coating agent [A] having the same composition as that used in Example 1 described above in a stripe shape of 3.5 mm in a coating amount of 3.5 g (solid component) / m ^{2 in} the coated portion. By drying at room temperature, a cardboard container {5} having a slip-resistant layer formed of a transparent synthetic resin layer was obtained.

Example 6 The same ready-made cardboard box as used in Example 1 was coated with 3.5 g (solid component) / m ² of a coating agent [C] having the following composition on the entire top and bottom surfaces. After coating at a predetermined ratio, the resultant was dried at room temperature to obtain a cardboard container {6} on which an anti-slip layer made of a transparent synthetic resin layer was formed.

Coating agent [C] (1) Polyacrylate emulsion 100 parts by weight (solid component) "Particle size 1 μm, non-volatile content 50%, viscosity ... 2
000cps "(2) Polyvinylidene chloride polymer hollow microspheres ... 10
0 parts by weight "Built-in material ... butane, sphere diameter ... 15 to 30 m" (3) Water ... 20 parts by weight

Example 7 A 52% by weight solid component containing the following (1) and (2) was dispersed in water over the entire top and bottom surfaces of the same ready-made cardboard box used in Example 1. A liquid paper coating agent [D] is applied at a rate of 3.5 g (solid component) / m ² and then dried at room temperature to form a cardboard container having a transparent synthetic resin layer formed thereon. 7｝ was obtained.

(1) Ethylene / vinyl acetate copolymer emulsion: 100 parts by weight (solid component) "Particle size: 0.7 μm, non-volatile content: 55%, viscosity ..."
・ ・ 5500cps 」(2) Hollow microspheres of vinylidene chloride / acrylonitrile copolymer ・ ・ ・ ・ 150 parts by weight「 Built-in ・ ・ ・ ・ ・ ・ ・ isobutane, sphere diameter ・ ・ ・ ・ 10-20μm 」

Example 8 A 52% by weight solid component containing the following (1) and (2) was dispersed in water over the entire top and bottom surfaces of the same ready-made cardboard box used in Example 1. A liquid paper coating agent [E] is applied at a rate of 3.5 g (solid component) / m ² and then dried at room temperature to form a cardboard container having a slip-resistant layer made of a transparent synthetic resin layer. 8｝ was obtained.

(1) Ethylene / vinyl acetate copolymer emulsion: 100 parts by weight (solid component) "Particle size: 0.7 μm, non-volatile content: 55%, viscosity ...
・ ・ 1500cps 」(2) Hollow microspheres of methyl methacrylate / acrylonitrile copolymer ・ ・ ・ ・ 80 weight parts「 Built-in ・ ・ ・ ・ ・ ・ ・ isobutane, sphere diameter ・ ・ ・ ・ 10-20μm 」

[Experiment] Two identical paperboard containers (A) and (B) each having the anti-slip layer made of the transparent synthetic resin layer formed by the method according to the above-described embodiment were prepared as shown in FIG. [Table 1] shows the result of measuring the angle (α) at which the paper container (A) placed above is slid and stacked on the slope as shown in [1].

In FIG. 5, the portion indicated by reference numeral 14 is a stopper for preventing the paper container (B) disposed below from sliding down.

The reference paper container (a) shown in Table 1 is the ready-made cardboard box itself used in each of the aforementioned embodiments.

The reference paper container (b) is made of a hot-melt adhesive mainly composed of ethylene / vinyl acetate resin, wax and petroleum resin, and is provided with a lower paper container (B) made of a ready-made cardboard box. At the four corners of the top surface, in the state shown in FIG.
While this coating agent is being applied and the coating agent is in a molten state, a ready-made cardboard box serving as the upper paper container (A) is placed, and the paper container (A) and the paper container (B) are bonded. It is fixed.

A paper container (c) as a reference product was prepared by adding 3.5 g (solid component) / m ² of an ethylene / vinyl acetate resin emulsion to the entire top and bottom surfaces of a ready-made cardboard box.
And dried at room temperature.

[0049]

[Table 1]

From the experimental results shown in Table 1 above,
The cardboard container provided with the anti-slip layer made of the transparent synthetic resin layer obtained by the method of the present invention not only exhibits excellent action in the anti-slip properties of the cardboard container, but also has a plurality of It can be confirmed that even when the loading of individual paper containers is broken and reloading is performed again, the anti-slip characteristics of the original paper containers are maintained without deterioration.

[0051]

According to the present invention, the method of forming the anti-slip layer comprising the transparent synthetic resin layer of the present invention can be applied to a cardboard container, a blank sheet before the box-making process, a cardboard-made cardboard, or a box-made laminated paper. An inert gas, an active gas, a non-vaporizable liquid, or a vaporizable liquid in an aqueous dispersion or an organic solvent liquid containing a synthetic resin component exhibiting the function of a binder for a predetermined portion of the paper before being laminated. After forming a coating layer with a coating agent in which a large number of thermoplastic synthetic resin hollow fine particles having a diameter of 10 to 50 μm containing one or more liquids are mixed and dispersed, the thermoplastic layer in the coating layer is formed. The coating is carried out at such a temperature that the thermoplastic synthetic resin microsphere hollow body does not expand due to the pressure of an inert gas, an active gas, a non-vaporizable liquid, or a vaporizable liquid contained in the synthetic resin microsphere hollow body. Dry and solidify the layer It is intended to.

Therefore, the anti-slip layer formed by the method of the present invention is characterized in that the hollow microspheres made of thermoplastic synthetic resin existing in the anti-slip layer are made of inert gas, active gas, The gas, the non-vaporizable liquid, or the vaporizable liquid does not undergo expansion due to pressurization.

For this reason, paper containers provided with the anti-slip layer made of the transparent synthetic resin layer formed by the method of the present invention have a large number when the anti-slip layer is subjected to a load by stacking the paper containers in multiple stages. The hollow spheres are deformed as if they are trying to crush rubber balls, and the hollow spheres have high elasticity and high restoring force, preventing slippage. An extremely excellent action is exhibited.

The anti-slip layer formed by the method of the present invention is obtained by converting a thermoplastic synthetic resin microsphere hollow body present in the anti-slip layer from a thermoplastic synthetic resin microsphere hollow body having a diameter of 10 to 50 μm. In addition, the inert gas, the active gas, the non-vaporizable liquid, or the vaporized liquid contained in the hollow microspheres is not expanded by pressurization. Receiving an inert gas, an active gas, a non-vaporizable liquid, or an anti-slip formed of a hollow fine particle sphere expanded by pressurization of the vaporizable liquid. Compared with the anti-slip layer, the anti-slip layer has sufficiently high anti-slip performance, high anti-repetitive frictional strength, and excellent transparency.

Further, the anti-slip layer made of the transparent synthetic resin layer does not impair the numbers, characters, trade names, cosmetic prints and the like usually attached to the cardboard container.

Further, the anti-slip layer made of the transparent synthetic resin layer is formed by a step of forming a coating layer with a coating agent on a cardboard container and a step of drying the coating layer. Therefore, the process is simple.

Further, the anti-slip layer obtained by the method of the present invention does not damage the surface of another paper container in contact with the anti-slip layer.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cardboard box which is an embodiment of a paper container having a slip-resistant layer formed of a transparent synthetic resin layer formed by the method of the present invention.

FIG. 2 is an enlarged sectional view of a part of the paper container shown in FIG.

FIG. 3 is an enlarged sectional view showing one example of a thermoplastic synthetic resin fine-grained hollow body used in the method for forming a slip-resistant layer comprising a transparent synthetic resin layer of the present invention.

FIG. 4 is an enlarged sectional view showing another example of a thermoplastic synthetic resin hollow fine particle sphere used in the method for forming a slip-resistant layer comprising a transparent synthetic resin layer of the present invention.

FIG. 5 is a side view of an apparatus for explaining an experimental method for measuring a slip prevention effect of a paper container.

FIG. 6 is a plan view illustrating a coating position of an adhesive when the upper paper container and the lower paper container are fixed with a hot melt adhesive in the paper container (b) used in the experiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cardboard container 2 Body wall part, 3 Upper wall part which is a lid 4 Bottom wall part 5 Fine particle spherical hollow body made of a thermoplastic synthetic resin, 6 Synthetic resin component exhibiting the action of a binder 7 Anti-slip layer made of a transparent synthetic resin layer 13. Inert gas, active gas, non-vaporizable liquid, or vaporizable liquid contained in the hollow microspheres 5 made of thermoplastic synthetic resin

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Keiichi Kobayashi 73-4 Higashi-Hiraga, Matsudo City, Chiba Pref.

Claims (1)

(57) [Claims] 1. A water containing a synthetic resin component for a binder is added to a cardboard container, a blank sheet before a box making process, a cardboard for box making, or a paper before being laminated on a laminated paper for box making. In a dispersion or an organic solvent liquid, an inert gas, an active gas, a non-vaporizable liquid, or a large number of thermoplastic synthetic resin hollow fine particles made of a thermoplastic synthetic resin having a diameter of 10 to 50 μm in which at least one kind of a vaporizable liquid is contained. After forming a coating layer with the mixed and dispersed coating agent, an inert gas, an active gas, a non-vaporizable liquid, or a gas contained in the hollow microspheres made of thermoplastic synthetic resin in the coating layer. A method for forming a slip-resistant layer comprising a transparent synthetic resin layer, characterized by drying and solidifying the coating layer at a temperature at which the hollow hollow body made of thermoplastic synthetic resin does not expand due to the pressure of an ionic liquid.