JP2992024B1 - Room temperature glass coated paper tray - Google Patents

Abstract

An object of the present invention is to form a paper material made of wood fiber or cotton on a paper tray of a predetermined size under pressure and apply a glass coating agent at room temperature to obtain a glossy appearance of lacquer ware and an appearance close to a texture. Provided is a room-temperature glass-coated paper tray having excellent use strength as a tray and excellent water resistance. SOLUTION: The room temperature glass coated paper tray 1 of the present invention cuts a paper material 5 made of wood fiber or cotton into a predetermined size, and cuts it into a concave lower press 9b having a central portion depressed.
And a tray core 2 pressurized between a convex upper press 9a protruding from the center, and a surface and an edge of the tray core 2 polished and shaped, and then the surface or the edge is coated with urethane paint. Undercoating 3 formed on the surface of the undercoating 3 and a surface of the undercoating 3 or an edge thereof containing a boron ion and a halogen ion as a catalyst necessary for oxidization (vitrification), and a hydrolyzable organic compound dissolved in an alcohol. Coating agent consisting of a single composition or a composite composition of metal compound is applied to tray core material 2
Was applied as a coating part 4 by spraying or brushing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray on which foods and dishes are placed, and more particularly to a room temperature glass-coated paper tray having excellent water resistance, moderate strength, and excellent appearance.

[0002]

2. Description of the Related Art In Japan, lacquer ware, including tableware and trays, has been used since ancient times.
For example, it is mostly used only for special occasions other than daily life, such as dining tables and trays for multi-course meals, tea cups for serving tea to customers, and the like.

[0003] Lacquer ware is made by shaving wood into a tray, dining table, tea ceremony, etc., and applying lacquer to the lacquer ware. It is extremely troublesome to handle such as storage and use, such as becoming dry or cracking when dried too much. Because lacquer ware is difficult to handle in this way, recently, synthetic resins such as polyethylene have been formed into trays, dining tables, tea trays, etc.
The urethane-coated one is widely used as a daily item instead of lacquerware.

[0004]

Problems to be Solved by the Invention However, as described above, conventional trays, dining tables, tea trays, etc. formed of a tray, a tray, a tea tray, etc., and coated with urethane, are unique to resin products. It was difficult to get the texture of lacquerware originally.

[0005] In addition, a pseudo-lacquer ware obtained by applying urethane to a synthetic resin or the like has a gloss immediately after the product is made in order to have durability. However, there is a drawback that is reduced. Furthermore, in the context of environmental protection, which is one of the recent social issues, if a traditional tray, table, tea cup, etc., made of resin, is damaged, for example, when incinerated, environmental hormones (endocrine disrupting substances) )), The use of which is avoided.

The present invention has been made in view of the above-mentioned conventional circumstances, and a paper material prepared by immersing wood fiber or cotton or the like in a predetermined solution and laminating the same is pressed onto a predetermined large tray core material. By forming and applying a glass coating agent at room temperature, the gloss of lacquerware has a beautiful appearance close to the texture,
It is an object of the present invention to provide a room-temperature glass-coated paper tray excellent in strength enough to be used as a tray and excellent in water resistance.

[0007]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 of the present invention is made by immersing wood fiber or cotton or the like in a predetermined solution in a room temperature glass coated paper tray and laminating the same. A paper material is cut to a predetermined size, and the core material is pressed between a concave lower press in which the central portion is depressed and a convex upper press in which the central portion protrudes, and the surface of the tray core material and After polishing and shaping the edge, an undercoat formed by applying a urethane paint to the surface or the edge thereof, and boron ion as a catalyst necessary for oxidization (vitrification) is formed on the surface or the edge of the undercoat. And a coating portion coated with a coating agent comprising a single composition or a composite composition of a hydrolyzable organometallic compound melted in alcohol and containing a halogen ion.

[0008] The invention according to claim 2 of the present application is to provide a room temperature glass coated paper tray, in which wood fiber or cotton or the like is immersed in a predetermined solution, and a paper material formed by laminating the same is cut into a predetermined large size, which is cut into the center. After pressing between a concave lower press having a recessed portion and a convex upper press projecting from the center, the surface and edges of the tray core are polished and shaped, and the undercoating section is formed. A coating agent comprising a single composition or a composite composition of a hydrolyzable organometallic compound containing boron ions and halogen ions as a catalyst required for oxidization (vitrification) and melted in alcohol was applied to the surface or the edge. And a coating part.

[0009] The invention according to claim 3 of the present application is the above-described claim 1.
Alternatively, in the room temperature glass coated paper tray according to claim 2, the coating portion is applied to the surface or edge of the undercoating portion or the surface or edge of the tray core material by spraying, or by brush or roll. It is characterized by being performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a room temperature glass coated paper tray according to an embodiment of the present invention, for example, a square tray having a predetermined size will be described with reference to FIGS. FIG.
FIG. 1A is a configuration diagram of a room temperature glass coated paper tray 1 in which a glass core has been subjected to a glass coating process, and FIG. 1B is a cross-sectional view of the room temperature glass coated paper tray 1. In FIG. 1, 2 is a tray core material, and 3 is
An undercoating section where an undercoating paint is applied to the room temperature glass coated paper tray 1 so as to have a color of the texture of lacquer ware,
Is a coating portion to which a glass coating agent described later in detail is applied.

The tray core 2 is formed by laminating a plurality of paper materials made of wood fiber or cotton and pressing them into a tray. Here, a manufacturing process for manufacturing the tray core 2 will be described. FIG. 2 is an explanatory view of the manufacturing process of the tray core material, 5 is a plurality of paper materials, 6 is a solution tank containing a zinc chloride solution, and 7 is a water tank for removing the solution. The dewatering tank 8 is a cutting machine for cutting the paper material dewatered in the dewatering tank to a predetermined size.

A paper feed roller 11a is provided between the solution tank 6 and the dewatering tank 7, and a paper feed roller 11b and a paper feed roller 11c are provided between the dewatering tank 7 and the cutting machine 8. Each is arranged for sending paper to the process. Also,
9 is a press machine that presses the paper material cut into a predetermined size by the cutting machine 8 to form the tray core material 2;
This is a dryer for drying the tray core material 2 formed by the press machine 9.

The pressing machine 9 includes an upper pressing plate 9
a and a lower press plate 9b. The upper press plate 9a is a convex plate made of, for example, metal and protruded downward, and the lower press plate 9b is made of a concave plate made of, for example, metal with a depressed middle part of the upper surface. The paper material cut into a predetermined size by the machine 8 is pressed into an upper press plate 9a.
The paper material is formed in a tray shape having a predetermined shape when the paper material is placed between the lower press plate 9b and the upper press plate 9b.

Next, the manner in which the tray core 2 is formed in the above process will be described. First, a plurality of paper materials 5 such as wood fiber or cotton are prepared, and these paper materials 5 are stacked at a predetermined interval, and are immersed in a solution tank 6 containing a zinc chloride solution. Paper material 5 with zinc chloride solution attached
Are stacked while being sent to the liquid removing tank 7 by the paper feed roller 11a. This laminated paper material 5
The zinc chloride solution attached to the paper material 5 is washed by the water in the dewatering tank 7.

The washed paper material 5 is supplied to a paper feed roller 11.
By c, it is sent to the next cutting machine 8. And paper material 5
The size of the tray (for example, 40
0 mm, width 500 mm, thickness is about 0.25 mm to 2.00 mm after drying because it contains moisture) and cut by pressing machine 9 to form a concave tray with a concave center. Formed.

When pressed by the press 9 and put into a drier 10 for drying, the tray core 2 serving as the core of the room temperature glass coated paper tray of the present invention is formed. Here, the size of the room temperature glass coated paper tray 1 is 400 mm in length, 500 mm in width, and 0.2 mm in thickness.
Although described as about 5 to 2.00 mm, the present invention is not limited to this size.

Next, the undercoating section 3 applies, for example, A liquid and B liquid of "black" stron # 800 (a urethane paint prepared by mixing two types of A liquid and B liquid applied to tableware and the like). The mixture was prepared at a ratio of 2: 1 to prepare a primer, and the tray core material 2 was prepared.
Is applied and dried on the surface of When the tray core material 2 is prepared, if a paper of a predetermined color is used, the undercoating section 3 is not particularly necessary, and the glass coating section 4 can be formed directly on the surface of the tray core material 2. Good.

The glass coating portion 4 is made of Zn (zinc), Al (aluminum), Ti (titanium), Sn
An organic compound (metal alkoxide) containing (tin), Si (silicon), etc., a curing catalyst containing a halogen ion in the presence of boron ion, and a functional side chain alkoxy group, acyloxy group, oxime group as a crosslinking agent This is a layer formed by applying a coating agent composed of an organosiloxane having the following to the tray core material 2 as an object.

In this film formation, as shown in the following formula 1, the functional group R (methyl group, phenyl group, etc.) of the organopolysiloxane is hydrolyzed by moisture in the air to change to a hydroxyl group. As shown in the following formula 2, the hydroxyl group of the organopolysiloxane produced by this reaction is attacked by the functional group of the cross-linking agent (organosiloxane having a functional side chain), and is also subjected to the action of a catalyst to perform a dealcoholization reaction. Is caused to form a cured polysiloxane, which is a polymer compound having a three-dimensional structure.

[0020]

(Equation 1)

[0021]

(Equation 2)

When this is represented by a chemical reaction formula, the following formula 3 is obtained.
Expressions 4, 5, and 6 are used.

[0023]

(Equation 3)

[0024]

(Equation 4)

[0025]

(Equation 5)

[0026]

(Equation 6)

[0027] In addition, B³⁺And X
⁻(Halogen ion) to complex ion BX ₄ ⁻Can, gold
Organic Compounds Containing Genus (Metal Alkoxide) M (OR) n
M (metal) and BX₄ ⁻B can very easily perform the substitution reaction
Cause the complex ion MX_{n + 1} ⁻And then this
Complex ion MX_{n + 1} ⁻Is hydrolyzed and hydrolyzed
The resulting M (OH) n causes a dehydration-condensation reaction, and at room temperature
Thus, a metal oxide (glass) is obtained.

Next, the coating operation for preparing the room temperature glass coated paper tray 1 in the present embodiment will be described. First, a tray core material 2 having a predetermined size is produced according to the tray core material manufacturing process. Since the surface of the tray core material 2 has fluff in the papermaking process and the cutting process, the surface and the edge are sandpaper (for example, # 320).
Polish with. The undercoating agent is applied to the surface of the tray core 2 and left to dry at 60 ° C. for 1 hour, and the surface of the tray core 2 after the undercoating is further applied with sandpaper (for example, # 320). Grind. In this case, if the undercoat is not applied to the tray core material 2, it is polished with a sandpaper (for example, # 320).

When the glass coating agent is ready,
This is put in a spray container (not shown), and the tray core material 2 which has been undercoated is prepared, and the spray container (not shown)
Is applied to the tray core material 2 by spraying. When the tray core 2 is dried at 80 ° C. for 1 hour, a so-called coating film of about 10 μm to 13 μm is formed as the glass coating portion 4, and the room temperature glass coated paper tray 1 of the present invention is obtained.

In the above embodiment, the tray core material to be coated is described as a square tray, but it may be a round tray, or a leaf-shaped tray core material as seen in lacquerware. The shape is not particularly limited. Further, in the above embodiment, the paper material is pressed by the press machine to form the concave tray core material. However, at the time of press forming by the press machine, it is not necessary to form the concave shape, and the same function as the tea tray is provided. It may be a flat plate-shaped tray core material such as a coaster having the above.

In the above embodiment, one tray core is formed by press-forming a paper material made of wood fiber or cotton. A tray core material serving as another side may be bonded to form one tray core material, and then the glass coating agent according to the present embodiment may be applied. In the above embodiment, as a method of applying the glass coating agent, the glass coating agent is put and sprayed and applied with a spray container, but the glass coating agent may be applied by a brush, and the application method is particularly preferred. Not limited.

In the above embodiment, Stron # 800 (black) is used for undercoating. However, as can be seen in lacquerware, for example, red undercoating paint such as Stron # 980 sanding sealer is applied. The color and pattern are not particularly limited as long as they are suitable for the purpose. In the above-described embodiment, the tray core is formed by using a paper material such as wood fiber or cotton.However, for example, the tray core is formed of resin such as pulverized cashew nut shell, walnut shell, and almond shell and resin. It may be formed.

In the first and second embodiments, an organosiloxane having a functional side chain alkoxy group, acyloxy group or oxime group is used as a crosslinking agent. When there is no substance that inhibits the reaction of the formula 2, the use of the crosslinking agent itself may be omitted.

[0034]

As described above, the tray core material is manufactured in accordance with the tray core material manufacturing process, and the undercoated urethane paint is applied to the tray core material or Zn (zinc) is directly applied to the tray core material. ), A curing catalyst containing a halogen ion in the presence of a boron ion in an organic compound (metal alkoxide) containing Al (aluminum), Ti (titanium), Sn (tin), Si (silicon), etc., and a functional side chain When a coating agent comprising an organosiloxane having an alkoxy group, an acyloxy group, and an oxime group is applied to a tray core material that has been subjected to pretreatment such as undercoating in advance and then dried, a room temperature glass coated paper tray having high water resistance can be obtained. Can be. By using the room-temperature glass-coated paper tray of the present invention as compared with a resin-processed tray, a tray very similar to an original lacquer ware (so-called “bon”) can be created.

In the room temperature glass coated paper tray of the present invention, the metal oxide glass to be coated on the core of the tray can be coated at room temperature by spraying, brushing, or using a roll. The coating process can be easily performed without requiring a processing device or the like.

Furthermore, the room temperature glass coated paper tray of the present invention can be safely incinerated without generating any environmental pollutants even when it is incinerated as combustion waste when discarded due to, for example, breakage. There are advantages. The room-temperature glass-coated paper tray of the present invention presses the paper material with a press machine to form the tray shape. Room temperature glass coated paper trays can be easily made.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a room-temperature glass-coated paper tray according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a tray core material manufacturing apparatus for creating a paper tray of a room temperature glass coated paper tray according to an embodiment of the present invention.

[Explanation of symbols]

 1. Room temperature glass coated paper tray 2. Tray core 3. Coating part 4. Coating part 5. Paper material 6. Solution tank 7. Dewatering tank 8. Cutting machine 9. Press machine 10. Dryer 11a, 11b, 11c Paper feed roller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A47G 23/06 A47G 19/00

Claims (3)

(57) [Claims] 1. A paper material prepared by immersing wood fiber or cotton or the like in a predetermined solution and laminating the same is cut into a predetermined large size. A tray core material pressed between a convex upper press, and an undercoat portion formed by polishing and shaping the surface and edges of the tray core material and then applying a urethane paint to the surface or edges thereof And a single or composite composition of a hydrolyzable organometallic compound containing a boron ion and a halogen ion as a catalyst required for oxidization (vitrification) on the surface or the edge of the undercoating portion and melted in alcohol. A room-temperature glass-coated paper tray, comprising: a coating portion coated with a coating agent; 2. A paper material prepared by immersing wood fiber or cotton or the like in a predetermined solution and laminating the same is cut into a predetermined size, and is cut into a concave lower press in which the center is depressed. After pressurizing with the convex upper press, the surface and the edge of the tray core are polished and shaped, and the surface or the edge of the undercoating part is required for oxidization (vitrification). A room temperature glass coating characterized by comprising a coating part containing a single or composite composition of a hydrolyzable organometallic compound melted in alcohol and containing a boron ion and a halogen ion as a suitable catalyst. Paper tray. 3. The room temperature glass coated paper tray according to claim 1, wherein the coating portion is applied by spraying, or by a brush or a roll.