JP2015134479A - Manufacturing method of lacquer product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a lacquer product such as a table ware, a container and an ornament with only lacquer coating or the like without using a core.SOLUTION: A laminate 5 prepared by applying lacquer coating material in piles by repeating such a coating process as to apply a coating material essentially comprising lacquer on the surface of a trimming die 1 made of non-permeable and flexible substrate, for example, polypropylene, dry and cure the coating material, thereafter, again apply the lacquer coating material on the upper layer of the coated surface and dry and cure the coated coating material is formed on the trimming die 1, subsequently, the trimming die 1 is deflected, thereby, the laminate 5 is released from the trimming die 1 to obtain a lacquer product. Thereby, wood and bamboo as a core are made unnecessary when manufacturing the lacquer product, moreover, the container having high water-proofness and high toughness irrespective of thin thickness can be provided and new usage which is not be provided in the conventional practice can be expected.

Description

  The present invention relates to a method for producing a lacquer product suitable for a product made using a lacquer-based paint or cashew paint, such as tableware, containers, and ornaments.

  In Japan and Asia, lacquer, a natural resin paint material, has been widely collected from urushi as a tree for a long time (hereinafter referred to as “lacquer” as paint), and this is used as the main component (hereinafter referred to as lacquer paint). To do). Conventionally, lacquer paint has been mainly used to coat the surface of, for example, tableware, containers, and ornaments with wood or bamboo as the core. As an alternative to lacquer paint, cashew paint is also mainly used for coating the surface when producing tableware, containers and ornaments. Therefore, in the following, the term “lacquer product” is a concept including one using cashew paint. An example of a lacquer paint as a raw material is shown in Patent Document 1, and an example of a product using a lacquer paint is shown in Patent Document 2.

Japanese Patent Publication No. 6-23334 JP 7-47799 A

All of these lacquer paints or cashew paints (hereinafter referred to as lacquer paints) are always applied on top of wood or bamboo as described above, or are made of wood or bamboo as the core and only paint. There is no idea of solidifying and making it an industrial product alone. However, lacquer paint generally has the image of a luxury product, and new products are expected if it can be industrialized with a product built solely from lacquer. Therefore, for example, a technique for commercializing tableware, containers, ornaments, etc. using only a lacquer paint without using a core such as wood or bamboo has been demanded.
An object of the present invention is to provide a production method for producing lacquer products such as tableware, containers and ornaments using only a lacquer paint without using a core.

In order to achieve the above object, the first means is to apply a lacquer-based paint or a cashew paint (hereinafter referred to as a lacquer paint) on the surface of a non-permeable and flexible base material. After the drying and curing, apply the lacquer paint again to the upper layer, and form a laminate on which the lacquer paint is applied repeatedly by repeating the coating process of drying and curing this, Next, the gist of the invention is to obtain a lacquer product by releasing the laminate from the substrate by bending the substrate.
If it is such a structure, the laminated body which applied the lacquer coating etc. through the application process will be released from the base material by deforming the base material, and at least the surface that was in close contact with the base material of the laminated body A lacquer product matching the outer shape of the substrate can be obtained. This makes it possible to produce a lacquer product that is constructed only from a lacquer paint or cashew paint without a core using a base material as a mold. The laminate can be thickened by increasing the number of coatings, and a very thin lacquer product can be obtained if the number of coatings is small.

Here, lacquer coating is a concept that includes not only raw lacquer with no oil content, but also oil lacquer to which oil is added and lacquer to which other paints and adjusting agents are added. Cashew paint is a concept that includes not only those obtained by polymerizing cashew oil but also cashew paint added with other paints and adjusting agents.
Moreover, although the coating thickness at the time of apply | coating a lacquer coating material etc. is not constant with the kind and viscosity of a coating material, it will become thickness of about 20-100 micrometers normally in the state immediately after application | coating.
Both lacquer paint and cashew paint have the property of being hardened without elasticity like rubber while having flexibility when dried and solidified. However, in the drying process, lacquer is oxidized and dried in a humid atmosphere, whereas the cashew paint does not require humidity. Therefore, the environment and apparatus for drying differ depending on whether lacquer paint is used or cashew paint is used.
The substrate on which the lacquer coating or the like is applied is not limited in shape as long as it is impermeable and flexible. The non-penetrability is because if it is permeable, the lacquer coating or the like is strongly bonded to the base material and cannot be released. The base material needs to be flexible in order to release the laminate by shifting the adhesive interface between the two by bending. Even if it is a locally hard substrate, by forming the length and width direction relatively large with respect to the thickness direction, it is possible to have sufficient flexibility with respect to the bending force as a whole. it can. For this reason, many materials can be used as the substrate here, but materials that are extremely inflexible, such as ordinary quartz glass, are not suitable.

The second means is characterized in that, in addition to the first means, the base material is a plastic or an elastomer.
These materials can be easily made into a non-permeable and flexible shape, and can be easily formed into an arbitrary shape, and thus may be used as a base material.
Examples of the plastic include polyethylene, polystyrene, polyethylene terephthalate (PET), PBT resin, silicone resin, polypropylene (PP), and polyvinylidene chloride. The elastomer is a concept including synthetic rubber.

The third means is characterized in that, in addition to the first or second means, the base material is a transparent or translucent material.
If it is such a structure, when applying a lacquer paint etc. and producing a laminated body, when releasing a laminated body, the lacquer paint etc. of the 1st layer used as an outer surface can be visually observed, how It becomes possible to carry out the process while recognizing the shape or the color to be molded.

In addition, in the fourth means, in addition to any one of the first to third means, the region where the lacquer coating or the like of the base material is applied to form the laminate is the first layer of the lacquer coating or the like Has a portion that is not partially applied, and the first layer of the lacquer paint or the like is applied to a portion where the first layer of the lacquer paint or the like is not partially applied. The gist is that the color is different from the lacquer paint.
If it is such a structure, when the lacquer paint etc. are applied repeatedly and a laminated body is produced, the lacquer paint of the 1st layer which becomes the outermost surface when releasing a laminated body can be applied first. When a pattern or a letter is applied to the first layer, even if it fails without being drawn well, it can be easily redone. On the other hand, in the conventional method in which the core is applied repeatedly, the last coating process is exposed to the outermost side as it is, and if the drawing fails at this stage, the process up to that time may be wasted. Although there was a possibility, such a problem will be eliminated.
In addition, in the past, patterns and letters are applied last, but in that case, the coating condition is not uniform, and there are many cases where sharpening work is required to smooth the surface. Since it can apply | coat on a base material in the 1st layer, it becomes possible to express a pattern and a character with uniform thickness.
Two or more different colors may be used as long as the lacquer coating or the like of the second layer or later is applied directly to the substrate.

The fifth means is characterized in that, in addition to any one of the first to fourth means, the laminate is processed after being released from the base material.
As a result, for example, a hole for a pendant or a key holder can be processed in the laminated body released from the base material, and teeth of combs and scissors can be cut out.

  According to the present invention, it is possible to manufacture lacquer products such as tableware, containers and ornaments using only a lacquer paint without using a core.

(A)-(e) is explanatory drawing explaining the flow until it obtains a product in the manufacturing process of embodiment of this invention. The block diagram explaining the manufacturing process of embodiment.

Hereinafter, an embodiment which embodies the method for producing a lacquer product of the present invention will be described with reference to the drawings.
As shown in FIG. 1 (a), in the present embodiment, a container-shaped die 1 is used as an example of a base material, and a laminate for a container-like product corresponding to the inner shape of the die 1 is formed. Shall be allowed to. The punching die 1 is a bottomed container having a smooth outer surface made of polypropylene formed with a thickness of about 500 μm in which the cross section of the body portion 1a is circular. The inner peripheral surface from the bottom surface 1b to the bent portion 1c closer to the upper portion is a laminated body forming region. A reinforcing flange 1d is integrally formed on the entire upper part of the punching die 1 and a thread bottom part 1e is integrally formed on the entire lower periphery of the lower part of the punching die 1 from the bottom surface 1b.
In this embodiment, lacquer paint is used. The lacquer paint used here is a red colored first paint (a solution prepared by adding about 3% by weight of turpentine oil to a base prepared by mixing Chinese lacquer with cinnabar sand) and a black colored second paint. Paint (a solution prepared by adding about 3% by weight of turpentine oil to a base prepared by mixing iron powder with Chinese lacquer and stirring it) was used. The thickness when these paints are applied is about 30 to 60 μm.

FIG. 2 is a block diagram of the manufacturing process of the lacquer product. Hereinafter, the manufacturing process will be described with reference to FIG. The manufacturing process of the present embodiment includes a first layer coating / drying process, a second to fifteenth layer coating / drying process, a mold release process, and a finishing process.
1) First layer application / drying step First, a first paint is applied to the laminated body forming region of the die 1 with a brush so as to draw a random pattern 3 on the die 1. It is a kind of painting work. The random pattern 3 is visible from the outside because the die 1 is transparent. FIG.1 (b) is a front view of the cutting die 1 in the state which applied the 1st coating material. After coating in this way, it was left to stand in a dark room with an atmosphere of 90% or higher for 12 hours to be dried and cured.
b) Application / Drying Step of 2nd to 15th Layer The second coating material is applied so as to cover the entire area of the laminate formation region after the first layer is dried. And it is made to dry and harden on the same conditions as 1). This process of applying and drying the second paint is repeated 14 times. FIG.1 (c) is a front view of the cutting die 1 in the state which applied the 2nd coating material. When the uppermost layer (the layer farthest from the die 1) is dried and cured, a laminate 5 consisting of a total of 15 layers is formed. In the present embodiment, the thickness of the laminated body 5 is configured to be about 500 μm.
c) Mold Release Step The mold 1 is bent by holding the position of the upper flange 1d of the mold 1 facing 180 degrees with fingers and applying pressure with the fingers inward. By this operation, the laminated body 5 is removed from the punching die 1 (state shown in FIG. 1D).
d) Finishing Step As shown in FIG. 1 (d), the laminate 5 has burrs 6 left when the lacquer coating is applied to the edge side. Therefore, the burr 6 is shaved by a grinding means such as a grinder (not shown), the first paint is applied as a makeup to the small mouth portion, and dried in the same manner as described above to complete a small bowl 7 as a product (FIG. 1 (e)). State).

With the configuration described above, the following effects are achieved in the method of manufacturing a lacquer product according to the present embodiment.
(1) It is possible to provide a container with high waterproofness and toughness despite the fact that it does not require core wood and bamboo when manufacturing lacquer products, and it is extremely thin. it can.
(2) Since the pattern that should be drawn at the end can be drawn first, there is no possibility of failing to draw a picture or pattern at the end. In such a construction method, even if it fails first, it is sufficient to change the cutting die 1 and start again, and it is tolerant of failure in painting work. Further, since the pictures and patterns are extended on the punching die 1, it is possible to obtain a pattern with a uniform thickness.
(3) The die 1 is a tapered shape that opens upward, and when the die 1 is bent in the mold release process, the laminate 5 automatically pops upward so that the workability is good. .

In addition, this invention can also be embodied in the aspect changed as follows.
-The shape and material of the substrate can be changed as appropriate. Even if it is not the above-described die 1, for example, if a split die is used, it is possible to mold even a shape that is difficult to come off.
-The quality and color of the lacquer paint used can be changed as appropriate.
The small bowl 7 is an example of a product, and other products can be manufactured.
-The number of times when the lacquer paint is stacked and the thickness of the paint when applied at one time can be changed as appropriate.
-Cashew paint may be used instead of lacquer paint.
・ In the above, the design was such that the red pattern of the first layer in contact with the die 1 on the black background was raised. It is also possible to create designs of three colors, yellow and black. In other words, by applying the first layer to the die 1 so as to leave a transparent portion as much as possible, several layers applied to the upper layer of the first layer are also exposed visually after completion. Is possible. As a result, it is possible to form a design constructed in several colors on the outer surface of the product.
-You may process after obtaining a product after the said finishing process. For example, when a key ring is manufactured, it is possible to provide a hole for attaching a key ring, or to cut out the teeth of a comb or scissors to make a final product. In that case, a lacquer paint may be additionally applied to the processed portion.
In addition, it is free to implement in a mode that does not depart from the spirit of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Die type as a base material, 5 ... Laminated body, 7 ... Small bowl as a lacquer product.

Claims (5)

  Apply a lacquer-based paint or cashew paint (hereinafter referred to as lacquer paint) on the surface of a non-permeable and flexible base material, dry and cure it, and then re-apply the lacquer paint on the upper layer. Is applied to the substrate to form a laminate on which the lacquer coating is applied by repeating the coating process of drying and curing, and then the substrate is bent to form the laminate. A method for producing a lacquer product, characterized in that a lacquer product is obtained by releasing from a base material.   The lacquer product manufacturing method according to claim 1, wherein the base material is plastic or elastomer.   The lacquer product manufacturing method according to claim 1 or 2, wherein the base material is a transparent or translucent material.   The region where the lacquer coating or the like of the base material is applied to form the laminate has a portion where the first layer of the lacquer coating or the like is not partially applied, and the first layer of the lacquer coating or the like. Is a color different from that of the lacquer paint and the like in the second layer and thereafter, which is applied to a portion where the first layer of the lacquer paint and the like is not partially applied. The manufacturing method of the lacquer product in any one of.   The method for producing a lacquer product according to any one of claims 1 to 4, wherein the laminate is processed after being released from the substrate.

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