JP2022063010A - Tableware/daily utnesile and manufacturing method of tableware/daily utnesile - Google Patents

Abstract

To provide a tableware/daily utensile which can reduce waste generation by adding new use value to a used tableware/daily utensile.SOLUTION: A tableware/daily utensile 1 of the present invention is a tableware/daily utensile using a food residue F as a raw material 3 and is basically molded from the raw material 3 having been blended with a specified quantity of a pulverized food residue F. The food container 1 can be provided with a plurality of concentric loop-like folding guide structures 13 in a height direction Z of the food container 1 if the food container 1 is formed to a deep bottom. On molding the food container 1, molding is preferably run by using a papermaking technique.SELECTED DRAWING: Figure 1

Description

The present invention relates to a take-out container used to bring back food, processed food, beverage, etc., a food container that can be used as a disposable container for storing food, processed food, beverage, etc. at outdoors or stores, and tableware such as cutlery. It relates to daily necessities and the method of manufacturing the tableware / daily necessities.

Conventionally, plastic food containers have been widely used as take-out containers and disposable containers for food. In recent years, the impact of plastic waste on the environment has become a major issue, and environmentally friendly paper food containers have also been developed and used.
Paper food containers can be manufactured by folding the paperboard and pasting it together to form a three-dimensional container shape, or by heating the paperboard and pressing it to form the desired three-dimensional container shape. There are formula manufacturing methods and the like.

Japanese Unexamined Patent Publication No. 2001-271288 Japanese Unexamined Patent Publication No. 2005-97802

The food container disclosed in Patent Documents 1 and 2 is a container manufactured by the above-mentioned heat press type manufacturing method, and has a gas barrier property and an inner surface by mixing an oxygen absorbing material and a moisture absorbing / water absorbing material in a pulp raw material. It is a food container that has oxygen absorption.
However, according to the heat press type manufacturing method, there arises a problem that wrinkles are generated on the surface of the container during press molding. Further, according to the above-mentioned assembly-type manufacturing method, it is difficult to manufacture a food container having a complicated shape having a curved surface, and there is a problem that man-hours are required for assembling and the cost of the food container is increased.
Furthermore, even though paper food containers are environmentally friendly, they are discarded after use and treated as burnable garbage, which increases the cost of collecting, transporting, and incinerating the garbage.

The present invention has been made based on such a point, and an object thereof is premised on producing tableware / daily goods containing environmentally friendly raw materials, and is new to tableware / daily goods after use. The purpose is to add utility value to reduce the generation of dust, and to provide a method for manufacturing tableware and daily necessities that has a beautiful appearance without wrinkles on the surface and can be used for molding tableware and daily necessities with complicated shapes.

In order to achieve the above object, the method for producing tableware / daily necessities according to claim 1 of the present invention includes a raw material swelling step in which the food residue is mixed with water or the food residue is mixed with pulp and mixed with water. , A raw material beating process in which the swollen raw material is beaten and cut together with water to grind it, and a paper making process in which the beaten raw material is made using a predetermined mold and formed into an intermediate product having a predetermined shape. It is characterized by having a drying / finishing process of drying an intermediate product having a predetermined shape and finishing it to obtain tableware / daily necessities.

Then, the following effects can be obtained by the above means. That is, according to the method for manufacturing tableware / daily goods of the present invention, since the tableware / daily goods are molded by the wet paper making technique, there is little risk of wrinkles on the appearance, the tableware has an excellent aesthetic appearance, and the tableware has a complicated shape. It will be possible to provide tableware and daily necessities manufacturing methods that can handle daily necessities.

It is a figure which shows the embodiment of this invention, and is the exploded perspective view which shows the food container of the set which combined the plurality of food containers. It is a figure which shows the embodiment of this invention, and is the perspective view which shows the food container at the time of disposal after use. It is a figure which shows the embodiment of this invention, and is the side sectional view which shows the food container at the time of use. It is a figure which shows the embodiment of this invention, and is the explanatory view which shows the process of the first half of the manufacturing method of a food container. It is a figure which shows the embodiment of this invention, and is the explanatory view which shows the process of the latter half of the manufacturing method of a food container. It is a figure which shows the other embodiment of this invention, is a perspective view and a plan view which shows various aspects of a food container. It is a figure which shows still another Embodiment of this invention, is a perspective view and a plan view which shows various aspects of cutlery and a food container.

Hereinafter, the configuration of the food container, which is one aspect of the tableware / daily goods of the present invention, and the content of the method for manufacturing the food container of the present invention will be specifically described by taking the illustrated embodiment as an example.
In the following description, first, the configuration of the food container of the present invention will be specifically described by taking the embodiment shown in FIGS. 1 to 3 as an example. Next, the contents of the method for producing a food container of the present invention will be described step by step based on the explanatory views shown in FIGS. 4 and 5. Finally, another embodiment having a partial configuration different from that of the above embodiment will be briefly described with reference to FIGS. 6 to 7.

(1) Configuration of food container (see Figures 1 to 3)
The illustrated tableware / daily goods 1 of the present invention is a food container in which a food residue F crushed into a raw material 3 is mainly used and a pulp P is mixed therein, and the food container is molded. As a raw material, a food residue of 100% can be produced.
In FIG. 1, a lid 5 having a shallow-bottomed tray turned inside out, a container body 7 having a deep-bottomed bowl-like shape, and a stepped portion 9 at the upper part of the container body 7 are fitted and horizontally supported. The food container 1 in which three points with the shallow bottom tray-shaped intermediate tray 11 are set is shown.
Of these, the configuration of the food container 1 of the present invention will be described more specifically by taking the container body 7 as an example. First, in the present invention, the blending ratio of the food residue F and the pulp P can be arbitrarily set, and the blending ratio of the food residue F is set to 1% to 99%. In a preferred embodiment, the blending ratio of the food residue F can be set to 10% to 51%, specifically, the blending ratio of the food residue F "bran" is 51%, and the unexposed pulp P is 49. %. This blending ratio is such that the nutritional elements, colors, textures, tastes, etc. of the food residue F as a food are exhibited as much as possible. The blending ratio of the food residue F is appropriately adjusted according to the type of the food residue F described later and the strength of the tableware / daily goods.

Further, in the present embodiment, the case where a certain amount of pulp P is blended is described, and unexposed pulp is used as pulp P. The unbleached pulp is a brown-colored pulp that has a different taste from the exposed white pulp, and is characterized by having a texture that naturally blends into a food container.
Further, as the food residue F, "bran", which is a general term for the outer skin portion and the germ produced when wheat is milled, can be used. "Bran" is an A feed that can be given to cattle and goats, and is most suitable for carrying out the present invention. In addition, various food waste materials such as thin-skinned coffee beans called "chaf" and burnt husks, fruit husks such as citrus and apple, tea husks, beer, shochu, and rice bran produced during the manufacturing process of whiskey are also available. It can be used as food residue F. These food residues F are crushed to a size that does not interfere with molding and used, and pulp P is blended as needed.
As shown in FIG. 1, a plurality of concentric loop-shaped folding guide structures 13 are provided in the container body 7 formed of the raw material 3 in the height direction Z. In the present embodiment, the container body 7 is formed into a deep-bottomed bowl-like shape having a circular shape in a plan view and a flat bottom portion 15, and the peripheral surface thereof is formed with an appropriate interval in the height direction Z as an example. The concentric folding guide structure 13 of the book is formed.

In the present embodiment, the folding guide structure 13 is configured by a loop-shaped step structure 21 having a streak-like recess 17 on the outer peripheral surface side of the container body 7 and a streak-like convex portion 19 on the inner peripheral surface side. The uppermost step structure 21 formed also has a function as a step portion 9 for supporting the intermediate tray 11 described above.
Further, by forming this step structure 21, the rigidity of the container body 7 is increased in the state of use shown in FIG. 1, and the container body 7 is crushed in the height direction Z in the state of disposal shown in FIG. As shown in FIG. 2, the container body 7 can be folded into a compact flat plate shape in the height direction Z, which functions as a guide groove when the container body is folded.

The lid 5 and the intermediate tray 11 are also molded using the same raw material 3 as the container body 7. Of these, the lid 5 has a shape in which a tray-shaped container having a shallow bottom that is circular in a plan view is turned inside out, and one circular ring-shaped step portion 23 is formed on the peripheral body portion thereof. Incidentally, when the lid 5 is attached to the opening of the container body 7, the inner peripheral surface of the horizontal portion of the step 23 abuts on the end surface of the open upper edge of the container body 7 to form the container body. It has a role of closing the opening of 7.
Further, when the lid 5 is attached to the opening of the container body 7, the inner surface of the peripheral body of the peripheral body portion of the lower lid 5 of the step portion 23 fits into the outer peripheral surface of the container body 7 near the upper edge side. It has the role of ensuring the blocked state.

On the other hand, the intermediate tray 11 is a tray-shaped member having a shallow bottom that is substantially circular in a plan view, like the lid 5, and has a semicircular concave portion 25 in a plan view that is recessed inward at a position facing the peripheral body portion. A set is formed.
Incidentally, this recess 25 has a role as a finger hooking portion on which a finger is hooked when the intermediate tray 11 attached to the uppermost step portion 9 of the container body 7 is removed from the container body 7.

(2) Manufacturing method of food container (see FIGS. 4 and 5)
The method for producing a tableware / daily necessities container of the present invention is a method for producing a tableware / daily necessities container 1 using food residue F as a raw material 3 or food residue F and pulp P as a raw material 3, and is a method for producing a tableware / daily necessities container 1, wherein the raw material swelling step P1. It is basically composed of four steps of a raw material beating step P2, a papermaking step P3, and a drying / finishing step P4. In this embodiment, a method for manufacturing a tableware / daily goods container 1 using food residue F and pulp P as raw materials 3 will be described.
Hereinafter, these steps constituting the method for manufacturing a food container will be specifically described.

(A) Raw material swelling process (see Fig. 4)
The raw material swelling step P1 is a step of blending pulp P having a predetermined blending ratio with crushed food residue F having a predetermined blending ratio and mixing water W to swell the raw material 3.
Specifically, in mass production, a device called a pulper 27 is used to mix the raw material 3 charged into the tank 29 and the water W by a stirring blade 33 that is rotated by the drive of a motor 31.

(B) Raw material beating process (see Fig. 4)
The raw material beating step P2 is a step of beating the swollen raw material 3 together with water W to cut and grind.
The beating is a work performed for cutting the fibers of the pulp P to improve the adhesion between the fibers, and is performed in mass production using a device called a beater 35 or the like. Specifically, the raw material 3 inflated in the previous step is put into a beating tank 37, and the raw material 3 is beaten by a grinding operation by a large number of ridges 43 attached to the peripheral surface of a cylindrical drum 41 rotated by a motor 39. Then, the fibers of the food residue F and the pulp P are cut to improve the adhesion between the fibers.

(C) Papermaking process (see Fig. 5)
The papermaking step P3 is a step of making a beaten raw material 3 using a predetermined mold 44 and forming it into an intermediate product 2 having a predetermined shape.
In this step, the papermaking operation is performed by diluting the raw material 3 with water W 10 times and further diluting the raw material 3 3 times using a solution of the raw material 3 having a concentration of about 0.2% to 0.3%.
The mold 44 used in this step is a papermaking die 45, and the papermaking work is executed by combining with the papermaking ring 51 installed in the liquid tank 49.

The liquid tank 49 containing the diluted solution of the raw material 3 described above is dehydrated by the siphon principle according to the papermaking mold 45 made of punching metal set in the papermaking ring 51, and the raw material 3 is placed on the surface of the papermaking mold 45. An intermediate product 2 having a predetermined shape is obtained by adhering the diluted solution.
Next, the intermediate product 2 attached to the papermaking mold 45 is transferred to the transfer mold 46. The transfer mold 46 is formed of a convex mold, and is provided with a plurality of holes 53 for sucking and discharging air. The intermediate product 2 peeled off from the papermaking mold 45 is transferred to the surface of the transfer mold 46.

(D) Drying / finishing process (see Fig. 5)
The drying / finishing step P4 is a step of drying the paper-made intermediate product 2 having a predetermined shape and performing a finishing process.
In this step, two dies 44, a press convex die 47 and a press concave die 48, are used.
The transfer mold 46 on which the intermediate product 2 is transferred to the surface is moved onto the press concave mold 48, the transfer mold 46 is lowered, and air is discharged from the hole 53 to transfer the intermediate product 2 to the press concave mold 48 side.

Next, the intermediate product 2 is heat-pressed by retracting the transfer mold 46, positioning the press convex mold 47 on the press concave mold 48, and lowering the press convex mold 47. The heating temperature of the mold surface at this time is about 170 ° C to 180 ° C.
In addition, when it is desired to impart hydrophobicity or water repellency to the inner surface of the container body 7, the inner surface of the container body 7 is coated with a polymer-type fluororesin or the like and heat is applied to generate water repellency. On the other hand, since the outer surface of the container body 7 is rougher, the mold release property from the mold 45 is better, so that the water repellent treatment is not applied to the outer surface side of the container body 7.
Finally, if the burrs and the like remaining on the upper edge of the container body 7 are removed and the shape is adjusted, the container body 7 having a predetermined thickness can be obtained.

According to the food container 1 of the present invention produced in this manner, it can be used as tableware / daily necessities containing the environmentally friendly food residue F in the raw material 3, and after use, it is collected, crushed and dried. , It will be possible to add new added value such as livestock feed, fertilizer and compost. As a result, it is possible to significantly reduce the generation of garbage in the food container 1 after use, which has been mostly disposed of in the past.
In addition, by adopting a food container manufacturing method that uses papermaking technology, it has become possible to manufacture a food container 1 with a beautiful appearance that is less likely to cause wrinkles on the surface, and it is possible to manufacture curved surfaces that were not possible by assembling paperboard. It becomes possible to cope with the molding of a food container 1 having a complicated shape including the above.

[Other embodiments]
The food container 1 and the method for producing a food container of the present invention are not limited to those of the above-described embodiment, and can be changed within the gist of the invention.
For example, as tableware, a shallow dish-shaped food container as shown in FIG. 7 (d) and a deep dish-shaped food container as shown in FIG. 7 (e) are typical examples, but the tableware is not limited to the food container. For example, a caterary such as a spoon shown in FIG. 7 (a), a knife shown in FIG. 7 (b), and a fork shown in FIG. 7 (c) used together with a food container can also be adopted. As these manufacturing methods, a method similar to that for food containers can be adopted. Further, as daily necessities, it can be used for various items such as packaging containers such as blister cases, gardening materials such as flower pots, daily miscellaneous goods such as shovels, and cooking utensils such as tongs.
Further, for example, as the shape of the food container 1, a vertically long cup shape for a drink, a coffee cup shape, a shallow flat plate shape, a deep bottom salad bowl shape, and rounded corners as shown in FIG. 6A are processed. Various shapes such as a square box shape, an oval shape in a plan view, an oval shape, an oval shape, a bowl shape, a gourd shape, a donut shape, or a dish shape with a partition 55 as shown in FIG. 6 (b). Can be adopted.

Further, the shape of the folding guide structure 13 can be variously changed in response to such a difference in the shape of the food container 1. For example, in the case of the square box-shaped food container 1, the plan view angle is round as shown in FIG. 6 (c). It is also possible to form a quadrangular loop-shaped folding guide structure 13.
In addition to the step structure 21 described in the above-described embodiment, the folding guide structure 13 may be perforated as long as it is a food container 1 for containing food that does not emit water, and the thickness of the folded portion may be increased. The structure may be thinned to weaken the strength to make it easier to fold. Further, the direction in which the folding guide structure 13 is provided is not limited to the height direction Z, but may be the width direction or the depth direction, and if the shape of the food container 1 is, for example, a donut shape, an appropriate interval in the circumferential direction. It is also possible to form the folding guide structure 13 by leaving a space.

The tableware / daily goods and the tableware / daily goods manufacturing method of the present invention can be used in the fields of manufacturing and use of take-out containers used in stores and the like, disposable containers used outdoors and the like, and are particularly disposable. It has the potential to increase the utility value of tableware and daily necessities after use and to solve the problem of waste disposal.

1 Tableware and daily necessities (food containers)
2 Intermediate products 3 Raw materials 5 Lid 7 Container body 9 Steps 11 Intermediate tray 13 Folding guide structure 15 Bottom 17 Concave 19 Convex 21 Convex 21 Steps 23 Steps 25 Recesses 27 Pulper 29 Tank 31 Motor 33 Stirring blades 35 Beater 37 Beating tank 39 Motor 41 Drum 43 Convex 44 Mold 45 Paper die 46 Transfer die 47 Press convex 48 Press concave 49 Liquid tank 51 Paper ring 53 Hole 55 Partition P Pulp F Food residue Z Height direction W Water P1 Raw material swelling process P2 Raw material beating Process P3 Papermaking process P4 Drying / finishing process

Claims (1)

Raw material swelling process in which the food residue is mixed with water, or pulp is mixed with the food residue and mixed with water, and the swelled raw material is beaten, cut together with water, and ground. The process, the papermaking process in which the beaten raw material is made using a predetermined mold and molded into an intermediate product of a predetermined shape, and the intermediate product of the specified shape that has been made are dried and finished to obtain tableware and daily necessities. A method for manufacturing tableware and daily necessities, which is characterized by having a drying and finishing process.

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