JP2015205004A - Method for producing tableware - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an increase in production efficiency and mass productivity by dispensing a compression molding step for coating treatment and decreasing a production man hour, cost reduction of molding equipment and reduction of a running cost by power consumption decrease, and downsizing of an installation space and improvement of energy saving.SOLUTION: The method includes: a coating treatment step of using as a coating material, a liquid coating agent Rc using two-liquid mixed humidity curable resin generated by mixing 20-30 pts. of a hardening agent B to 100 pts. of a main agent A having as the main constituent, 40-50 wt.% of polyisocyanate resin and 50-60 wt.% of acetic acid ester, and applying the coating agent Rc on the surface of a basic molding 50; and a dryness treatment step of hardening a coating molding 60 obtained by the coating treatment step, in a prescribed dryness condition so as to obtain tableware G.

Description

  The present invention relates to a method for manufacturing tableware, which includes a coating step for coating the surface of tableware.

  Conventionally, by forming a primary molded body that becomes the basis of tableware by compression molding a thermosetting resin that is a molding material with a mold, and after attaching a patterned foil to the surface of this primary molded body, As a method for producing tableware including a coating process in which a substantially entire surface is coated with a predetermined coating material, a method for producing a thermosetting resin molded product disclosed in Patent Document 1 and a heat disclosed in Patent Document 2 are disclosed. There are known a double-sided painting molding method of a molded product using a curable resin and a method for producing a double-sided decorated thermosetting resin molded product disclosed in Patent Document 3.

  The method for producing a thermosetting resin molded article disclosed in Patent Document 1 is intended to obtain a thermosetting resin molded article capable of extending the life compared to conventional ones. Specifically, The process of performing glaze coating molding on the concave mold surface of the molded product, the process of supplying the molded product obtained in this process upside down to the convex mold, and the glaze coating molding on the convex mold surface of the molded product The process of performing.

  In addition, the double-sided painting molding method of a molded product using a thermosetting resin disclosed in Patent Document 2 employs both a single cavity mold and a cavity split mold for painting both the inner and outer surfaces of a molded product using a thermosetting resin. The purpose of this is to make it possible to perform compression molding by opening and closing the mold with the core mold without flipping up and down. Specifically, the mold of the core mold and the cavity split mold By closing, the inner part of the molded product of the thermoplastic resin is compressed, and by opening the mold, the inner body is held in the cavity split mold and released from the core mold, and then between the core mold and the inner body. A pictured foil is put in and the inner surface is painted by closing the mold, and the inner body is held in the cavity split mold and released from the core mold, and then between the inner body and the core mold. After putting the coating material and holding the inner body in the core mold, cavity The mold is replaced with a single cavity mold, and the outer body is molded by compressing the material resin on the inner body by closing the cavity mold and the core mold. By forming this molded body, a foil with a picture is inserted between the molded body and the cavity split mold, and the outer surface of the molding is painted by closing the mold.

  Further, in the method for producing a double-sided decorated thermosetting resin molded article disclosed in Patent Document 3, painting and / or coating is applied to both the inside and outside of a two-color molded article of thermosetting resin materials having different colors. The purpose is to continuously produce beautiful thermosetting resin molded products in a series of steps. Specifically, one convex mold and two concave molds or two convex molds. A molded product having different inner and outer colors using a molding material of a different color using a set of molds consisting of a mold and a concave mold, and heat applied with benefit or / and coating on both sides A series of molding steps in which a curable resin molded product is first molded on the inside or outside of the molded product, and then the second convex or concave mold is slid or rotated to mold the outside or inside of the molded product. It is made to manufacture continuously with.

JP 2001-038753 A JP 2007-160924 A JP 2009-178861 A

  However, the conventional tableware manufacturing method including the above-described coating process has the following problems.

  First, tableware used in hospitals and welfare facilities is usually molded using melamine resin or polypropylene resin as a molding material to ensure contamination resistance and heat resistance, etc. Therefore, it is not suitable to perform a general coating process in which a liquid coating material is applied to the surface from the viewpoint of resistance to peeling. Therefore, as in the prior art, the actual situation is that a coating material covering the surface is formed by compression molding a molding material of the same type as the molding material used for the molded body. As a result, a number of compression molding processes, specifically, when the foil is attached to both the inner and outer surfaces, the compression molding process is repeated five times, resulting in a decrease in production efficiency and a decrease in mass productivity due to an increase in manufacturing man-hours. I will invite you.

  Secondly, such compression molding processes are different in the properties of the molding processes and use the same mold repeatedly for each molding process, so that a special mold structure and control form are required. Accordingly, the initial cost associated with the molding equipment is increased, and the compression molding process in which the mold is repeatedly opened and closed increases many times. Therefore, an increase in running cost associated with power consumption cannot be ignored. In addition, the installation space for the entire facility is increased, and an increase in power consumption is not desirable from the viewpoint of energy saving.

  The object of the present invention is to provide a tableware manufacturing method that solves the problems in the background art.

  The manufacturing method of the tableware which concerns on this invention forms the basic molded object 50 used as the foundation of the tableware G by shape | molding the molding material Rm using a thermosetting resin with the shaping | molding die 2, Then, the said basic molding A manufacturing method including a coating processing step of coating the surface of a body 50 with a predetermined coating material, the main component being 40 to 50 weight percent polyisocyanate resin and 50 to 60 weight percent acetate A liquid coating agent Rc using a two-component mixed moisture curable resin produced by mixing 20 to 30 parts of curing agent B with 100 parts of main agent A is used, and this coating agent Rc is used as a basic molded body. 50, a coating treatment process applied to the surface of 50, and a coating molded body 60 obtained by this coating treatment process. Cured by 燥 conditions characterized by comprising a drying treatment to obtain a tableware G is.

  In this case, according to a preferred embodiment of the invention, it is desirable that the thermosetting resin contains at least a melamine resin. A compression molding process can be used for the molding process. On the other hand, as a pre-process of the coating treatment process, a foil adhesion treatment process can be provided in which a predetermined patterned foil 55, 56 is adhered to the surface of the basic molded body 50 to obtain the foil molded body 51. In the coating process, it is desirable to perform a spray coating process in which a coating agent is applied to the basic molded body 50 and / or the foil molded body 51 by a spray coating method. Moreover, the surface treatment process which degreases the surface in the base molded object 50 with the surface treatment agent using isopropyl alcohol can be provided in the front | former stage of a coating treatment process. Furthermore, the drying treatment step can include a touch drying treatment at room temperature and a forced drying treatment in which drying is performed in a heating environment after the finger drying treatment.

  According to the method for producing tableware according to the present invention using such a technique, the following remarkable effects can be obtained.

  (1) As a coating material, 20 to 30 parts by weight of curing agent B is mixed with 100 parts of base agent A based on 40 to 50 weight percent polyisocyanate resin and 50 to 60 weight percent acetate. Using the liquid coating agent Rc using the two-component mixed moisture-curing resin to be formed, the coating treatment step of applying the coating agent Rc to the surface of the basic molding 50, and the coating molding obtained by this coating treatment step 60 is cured by a predetermined drying condition to obtain tableware G, so that the coating process for applying the liquid coating agent Rc can be realized even for tableware G using a thermosetting resin. . Thereby, since the compression molding process for the conventional coating process can be made unnecessary, production efficiency and mass productivity can be improved by reducing the number of manufacturing steps.

  (2) Since the compression molding process for the coating process can be eliminated, a special mold structure and control form related to the coating process can be eliminated. As a result, a general-purpose mold 2 for molding the basic molded body 50 is sufficient for the mold structure, and the initial cost for the entire molding facility can be reduced, and the number of compression molding processes in which the mold 2 is repeatedly opened and closed can be reduced. The running cost can be reduced by reducing the power consumption. In addition, the installation space for the entire facility can be reduced, and energy saving can be improved.

  (3) According to a preferred embodiment, if the thermosetting resin contains at least a melamine resin, the manufacturing method according to the present invention can be applied to a molding material that is the most widely used as a tableware G and is widely used. Therefore, it can be implemented as the most beneficial and effective mode.

  (4) According to a preferred embodiment, if a compression molding process is used as a molding process, it can be implemented as the most suitable mode for molding tableware G from the viewpoint of securing high strength and heat resistance using a thermosetting resin. .

  (5) According to a preferred embodiment, as a pre-process of the coating treatment process, a foil adhesion treatment process for obtaining the foil molded article 51 by attaching the predetermined patterned foils 55 and 56 to the surface of the basic molded article 50 is provided. Even if it exists, the manufacturing method which concerns on this invention can be implemented by the same ease as when not using the foils 55 and 56 with a handle, without adding a special change. It can be used as one of the methods.

  (6) According to a preferred embodiment, in the coating process, if the spray coating process of applying the coating agent Rc by the spray coating method is performed on the basic molded body 50 and / or the foil molded body 51, the coating unevenness is reduced. It is possible to easily provide a good coating layer with high quality that hardly occurs.

  (7) According to a preferred embodiment, if a base treatment step for degreasing the surface of the basic molded body 50 with a base treatment agent using isopropyl alcohol is provided before the coating treatment step, the coating treatment with the coating agent Rc is performed. Even in this case, a high-strength coating layer having peel resistance can be formed.

  (8) According to a preferred embodiment, if the drying process includes a touch drying process at room temperature and a forced drying process in which drying is performed in a heated environment after the touch drying process, the most preferable for the coating agent Rc. Since it can be cured under desirable curing conditions, it can be implemented as the most desirable embodiment from the viewpoint of maximizing the advantages based on various physical properties of the coating agent Rc, and a better coating layer can be provided.

Process drawing for demonstrating the whole process sequence of the manufacturing method of the tableware which concerns on suitable embodiment of this invention, Process chart for specifically explaining the processing procedure of the coating process in the manufacturing method, Sectional front view showing an outline of a mold used in the manufacturing method, Principle diagram for explaining the coating process of the manufacturing method, Sectional front view showing the state in each step of the mold used in the manufacturing method, A partially broken front view (including a partially extracted enlarged view) showing an example of tableware manufactured by the manufacturing method, Table showing the evaluation results of tableware (sample) manufactured by the manufacturing method,

  Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

  First, the structure of the shaping | molding die 2 used for the manufacturing method of the tableware which concerns on this embodiment is demonstrated with reference to FIG.

  The mold 2 is composed of a pair of molds 2d and 2u, that is, a lower mold (fixed mold) 2d and an upper mold (movable mold) 2u. The mold 2 allows a basic molded body 50 and a molded body 51 with foil to be described later. Can be obtained. The embodiment shows a tea bowl (FIG. 6) as an example of tableware G. Therefore, the basic molded body 50 has the basic shape of the tea bowl. The lower mold 2d has a lower mold surface 2df, and the lower mold surface 2df forms the outer surface of the basic molded body 50. The upper mold 2u has an upper mold surface 2uf, and the upper mold surface The inner surface of the basic molded body 50 is molded by 2uf. Accordingly, the cavity 2c is formed by the lower mold surface 2df and the upper mold surface 2uf. In addition, embodiment shows the case where a ceramic style teacup is manufactured as an example. For this reason, the lower mold surface 2df and the upper mold surface 2uf are provided with natural unevenness (distortion) of handmade style. By using this mold 2, the upper mold 2 u held by the lifting / lowering pressurizer (not shown) moves up and down, and compression molding is performed by clamping the lower mold 2 d fixed at a position facing the upper mold 2 u. It can be carried out.

  Next, the manufacturing method of the tableware G which concerns on this embodiment using such a shaping | molding die 2 is demonstrated concretely with reference to FIGS.

  First, the compression molding process including the foil adhesion treatment process will be described with reference to the process diagram shown in FIG. 1 and FIG.

  First, a molding material Rm for molding the basic molded body 50 is prepared (step S1). As the molding material Rm, a thermosetting resin, preferably a melamine resin can be used. Accordingly, the manufacturing method according to the present invention is the most widely used as the tableware G, and can be applied to the molding material for general use. Therefore, there is an advantage that it can be implemented as the most beneficial and effective mode. In this case, since the raw material of the prepared molding material Rm is in the form of powder or granules, the raw material weighed once is put into a mold, preheated to a temperature lower than the normal molding temperature, and molded into a tablet shape. Used as a molding material Rm. Depending on the mold shape, it can be used in the form of powder or granules.

  Then, the mold 2 is opened, and the molding material Rm is accommodated in the lower mold 2d in the mold open state (step S2). In this case, the mold 2 is set to a mold temperature corresponding to the molding material Rm. The mold temperature in the case of melamine resin is 160 to 170 [° C.]. FIG. 5A shows a state where the molding material Rm is accommodated in the lower mold 2d.

  Next, a compression molding process is performed (step S3). In the compression molding process, the upper mold 2u is lowered from the mold open state and is positioned at the lowest lowered position shown in FIG. FIG. 5A shows a state when the upper mold 2u is lowered from the mold open state and a part of the upper mold 2u is inserted into the lower mold 2d. By lowering the upper mold 2u to the lowest position, the molding material Rm is pressurized and compressed to a set pressure (for example, 15 to 30 [MPa]), and is compression molded based on the shape of the cavity 2c. Thereby, the basic molded object 50 used as the foundation of tableware G can be obtained. If such a compression molding process is used, there exists an advantage which can be implemented as the most suitable form with respect to shaping | molding of the tableware G from a viewpoint of ensuring high intensity | strength and heat resistance using a thermosetting resin. Thereafter, when a predetermined set time has elapsed, the upper mold 2u is raised to open the mold (see FIG. 5C). Then, the basic molded body 50 is taken out by a take-out mechanism using suction means or the like (not shown) (step S4).

  On the other hand, if the basic molded body 50 is taken out, the patterned foils 55 and 56 are set, and the basic molded body 50 is accommodated again in the lower mold 2d (steps S5 and S6). In this case, the patterned foil 55 indicates a foil attached to the outer side surface of the basic molded body 50, and the patterned foil 56 indicates a foil attached to the inner side surface of the basic molded body 50. Therefore, only one or both of the patterned foils 55 and 56 may be used. Moreover, it is not necessary to use any of them, and any use mode can be selected. In addition, when not using the foils 55 and 56 with a handle, a compression molding process is complete | finished by step S4, and it transfers to the coating process process mentioned later. When using the patterned foil 55 on the outer surface, the patterned foil 55 is positioned and set in the lower mold 2d in a state in which the basic molded body 50 is taken out. Re-contain in the lower mold 2d. On the other hand, when using the patterned foil 56 on the inner surface, the basic molded body 50 is re-contained in the lower mold 2d, and the patterned foil 56 indicated by a virtual line is positioned in the basic molded body 50. Set. Therefore, when only the patterned foil 56 is used, the basic molded body 50 may adhere to the lower mold 2d when the mold is opened. Further, when both the patterned foils 55 and 56 are used, the patterned foil 56 may be set after the patterned foil 55 is set.

  When the patterned foils 55 and 56 are set, the upper die 2u is lowered from the state shown in FIG. 5C, and is positioned at the lowest lowered position shown in FIG. Thereby, pressure compression is performed on the basic molded body 50 to which the patterned foils 55 and 56 are attached, and the patterned foils 55 and 56 are attached to the outer side surface and the inner side surface of the basic molded body 50 by welding, respectively. (Step S7). Thereby, the foil molded object 51 which attached the foils 55 and 56 with a handle can be obtained. Thereafter, the upper mold 2u is raised so as to be in the mold open state, the mold 2 is opened, and the foil molded body 51 is removed from the mold 2 (step S8).

  Steps S <b> 5 to S <b> 8 described above are foil attachment treatment steps for attaching predetermined handle-attached foils 55 and 56 to the surface of the basic molded body 50. This foil adhesion process is a previous process in the next coating process. The manufacturing method according to the present embodiment is basically the same as the case where the patterned foils 55 and 56 are not used, even if such a foil adhesion treatment process is provided, without adding special changes. There is an advantage that it can be used as one of highly versatile manufacturing methods. Further, unnecessary portions such as burrs are cut from the foil molded body 51 taken out from the mold 2 (step S9). Thereby, the compression molding process including the foil adhesion treatment process is completed, and the process proceeds to the coating process for the foil molded body 51 (step S10).

  Next, the coating process which becomes the principal part in the manufacturing method which concerns on this embodiment is demonstrated with reference to the process drawing shown in FIG. 2, and FIG.

  Note that FIG. 2 is a breakdown of the process in the coating process of step S10, and this coating process is roughly divided into a coating process in the previous stage and a drying process in the subsequent stage.

  First, a coating process is performed. In the coating process, first, a surface treatment process is performed in which the surface of the foil molded body 51 is degreased by a surface treatment agent using isopropyl alcohol (step S21). In this case, since the patterned foils 55 and 56 may not be provided, the basic molded body 50 without the patterned foils 55 and 56 is also included when expressed as the foil molded product 51 in the coating process. Moreover, as a degreasing | defatting method, it can carry out by the method of wiping off the surface of the foil molded object 51 with the waste etc. which were wetted with the base-treatment agent, for example. This ground treatment process is performed before the coating treatment process, and if such a ground treatment process is provided, even if a coating treatment with a coating agent Rc described later is performed, a high resistance to peeling is provided. A strong coating layer can be formed.

  When the ground processing step is completed, the foil molded body 51 is set in a predetermined coating apparatus (step S22). FIG. 4 shows an example of a coating apparatus in principle. The coating apparatus 11 shown in the figure has a function of uniformly applying a coating agent Rc described later to the foil molded body 51 by a spray coating method. In FIG. 4, reference numeral 12 denotes a rotary table on which the foil molded body 51 is placed. The rotary table 12 rotates at a rotation speed set in advance by the rotation drive mechanism 13. Reference numeral 14 denotes a spray mechanism that applies the coating agent Rc to the foil molded body 51 placed on the rotary table 12 by a spray application method. Nozzles 14n are provided. Further, the coating apparatus 11 includes a coating agent supply unit 15 that supplies the coating agent Rc to the spray nozzles 14n.

  On the other hand, a two-component mixed moisture curable resin is used for the coating agent Rc. Specifically, 100 parts base based on 40-50 weight percent, more preferably 41-46 weight percent polyisocyanate resin, and 50-60 weight percent, more preferably 54-59 weight percent acetate ester. A liquid coating agent Rc is generated by mixing 20 to 30 parts, more preferably 22 to 28 parts of curing agent B with respect to A (step S23). The coating agent Rc thus produced has a low viscosity and has a property that the pot life, that is, the coating time is relatively long. Specifically, the liquid temperature is about 4 to 6 hours at 10 to 30 [° C.]. Therefore, after mixing the main agent A and the curing agent B, there is an advantage that the work efficiency can be improved without affecting the workability and the coating film performance at the time of coating.

  Further, it has a property of forming a coating film by reacting with moisture (humidity) in the air. When a melamine resin is used as the molding material Rm of the foil molded body 51, it is originally included in the melamine resin. It also reacts with moisture, and the adhesion between the foil molded body 51 and the coating agent Rc becomes very strong. When forced drying treatment by heating described later is performed, the melamine resin and the coating agent Rc contract each other, and the adhesion The property can be further strengthened. Moreover, since the crosslink density is very high, it is resistant to osmotic contamination of foods and the like, and since it does not contain harmful volatile organic compounds (VOC) such as toluene and xylene, it has excellent safety properties. . Further, after complete curing, no odor peculiar to paint is generated even if heating is performed, and therefore, it is optimal for use in tableware G which is a target of the manufacturing method according to the present invention.

  The coating agent Rc prepared in this way is set and used in the coating agent supply unit 15 (step S24). The coating agent Rc may be generated separately as illustrated, and the generated coating agent Rc may be set in the coating agent supply unit 15 or generated inside the coating agent supply unit 15. A function may be provided.

  When the coating process is performed, the foil molded body 51 is placed on the upper surface of the turntable 12, and the foil molded body 51 is rotated at the set rotation speed, and the coating agent supply unit 15 is operated to apply the coating agent. Rc is pumped to each spray nozzle 14n. Thereby, coating agent Rc is sprayed from each spray nozzle 14n ..., and the coating process by spray application can be performed with respect to the surface of the foil molded body 51. At this time, it is desirable to apply to the surface (outer side surface and inner side surface) of the foil molded body 51 with an adhesion amount of 50 to 70 g / square meter as a guide. Thereby, the coating agent Rc is uniformly apply | coated to the surface of the foil molded object 51, and the coating molded object 60 with which the coating layer which has predetermined | prescribed thickness was formed can be obtained (step S25). As described above, if the spray coating process of applying the coating agent Rc by the spray coating method is performed, there is an advantage that a good coating layer with high quality in which coating unevenness hardly occurs can be easily provided.

  On the other hand, when the coating process is completed, a drying process for curing the coating agent Rc on the coating molded body 60 under predetermined drying conditions is performed. In this case, the drying process includes a touch drying process at room temperature and a forced drying process in which drying is performed in a heating environment after the touch drying process. First, a finger touch drying process is performed (step S26). In the touch drying treatment, the coating molded body 60 obtained in the coating treatment step is left to stand for about 15 to 30 minutes in a normal temperature (20 [° C.]) environment. When the touch drying process is completed, a forced drying process is performed by using a thermal drying oven and curing for about 1 hour in a heating environment of 100 to 150 [° C.] (step S27). If such a drying process is used, it can be cured under the most desirable curing conditions for the coating agent Rc. Therefore, it can be implemented as the most desirable embodiment from the viewpoint of maximizing the advantages based on various physical properties of the coating agent Rc, and a better coating layer can be provided.

  As described above, since the coating process (step S10) is completed, a necessary inspection such as an appearance inspection is performed (step S11). Thereby, all the processes are complete | finished and the tableware G (teacup) shown in FIG. 6 can be obtained.

  FIG. 7 shows a list of evaluation results of the manufactured samples. In the same table, Di is a sample relating to tableware G that has been coated by the manufacturing method according to the present invention. Moreover, the sample Dra which concerns on the tableware which performed the melamine coating used as a prior art, and the sample Drb which concerns on the uncoated tableware (basic molded object 50) were shown as a similar evaluation result as a control group. As evaluation items, four items of manufacturability, stain resistance, peel resistance, and appearance were used. In this case, the contamination resistance is determined by applying an appropriate amount of 4 kinds of sauce, mayonnaise, ketchup, and curry to the inner and outer surfaces of the sample, drying it in a speed dry oven set at 110 [° C] for 2 hours, and then allowing it to stand naturally. After cooling to room temperature and washing, the degree of contamination of the appearance was visually observed. In addition, the peel resistance is as follows: natural standing → hot water immersion (boiling) → neutral detergent immersion → washing with running water → drying with hot air (110 [° C.]) → natural standing as one cycle (each treatment is 30 minutes). After repeating 50 times, the presence or absence of the peeled state at the time of sticking and peeling with an adhesive tape was confirmed.

  As a result, as shown in FIG. 7, the sample Di according to the present invention obtained good results in all of the four items of manufacturability, stain resistance, peel resistance, and appearance. In particular, the appearance can provide a glossy feeling like a ceramic with a glaze, and the tactile feeling is also more moist when compared to the sample Dra with melamine coating. On the other hand, the sample Dra related to the melamine coating as the prior art has good contamination resistance, but the three items of manufacturability, peel resistance, and appearance can be said to have no problem in practical use. When compared with the sample Di according to the above, the result was not necessarily good. In addition, although the sample Drb without coating has good manufacturability, the two items of contamination resistance and appearance are inferior in evaluation, and when compared with the samples Di and Dra, there are no practical problems. It was.

  Therefore, according to such a tableware manufacturing method according to the present embodiment, 100 parts of main agent A mainly comprising 40 to 50 weight percent polyisocyanate resin and 50 to 60 weight percent acetate as a coating material. In contrast, a liquid coating agent Rc using a two-component mixed moisture curable resin produced by mixing 20 to 30 parts of the curing agent B is used, and this coating agent Rc is applied to the surface of the basic molded body 50. Tableware using a thermosetting resin, and a coating processing step to obtain the tableware G by curing the coating molded body 60 obtained by the coating processing step under predetermined drying conditions. Even in the case of G, it is possible to realize a coating process in which a liquid coating agent Rc is applied. Thereby, since the compression molding process for the conventional coating process can be made unnecessary, production efficiency and mass productivity can be improved by reducing the number of manufacturing steps. In addition, since a compression molding process for the coating process can be eliminated, a special mold structure and control form related to the coating process can be eliminated. As a result, a general-purpose mold 2 for molding the basic molded body 50 is sufficient for the mold structure, and the initial cost for the entire molding facility can be reduced, and the number of compression molding processes in which the mold 2 is repeatedly opened and closed can be reduced. The running cost can be reduced by reducing the power consumption. In addition, the installation space for the entire facility can be reduced, and energy saving can be improved.

  The preferred embodiment has been described in detail above, but the present invention is not limited to such an embodiment, and the detailed configuration, shape, material, technique, and the like are within the scope not departing from the gist of the present invention. , Can be changed, added and deleted arbitrarily.

  For example, the melamine resin is exemplified as the thermosetting resin, but other various thermosetting resins such as phenol resin and FRP (fiber reinforced plastic) can be applied, and the application of the thermoplastic resin is excluded. is not. Further, as the molding process, a compression molding process is most desirable, but other molding process methods such as an injection molding process are not excluded. On the other hand, although the case where the foil adhesion treatment process is provided has been illustrated, this foil adhesion treatment process is not necessarily an essential process and can be omitted. In addition, the pattern in the foil with a pattern is not a pattern as a general meaning but a concept including various display elements such as a single color, a character, a picture, and a photograph. In the coating process, the case where the coating process is performed by the spray coating method has been shown, but other coating methods such as brush coating are not excluded. Furthermore, although the case where isopropyl alcohol is used as the base treatment agent is shown, it is a matter of course that other base treatment agents and other degreasing methods can be used as long as they can be degreased. On the other hand, the case where a touch drying process and a forced drying process are included as the drying process is illustrated, but this does not exclude the case where another drying process is performed by changing the temperature, time, or the like. The upper mold 2u and the lower mold 2d are for convenience, and the upper mold 2u and the lower mold 2d may be interchanged, or the upper mold 2u is fixed and the lower mold 2d is moved up and down. May be.

  The method for producing tableware according to the present invention can be used for various types of containers, vases, figurines, and the like as well as the illustrated teacups.

  2: Mold, 50: Basic molded body, 51: Foil molded body, 55: Foil with handle, 56: Foil with handle, 60: Coated molded body, Rm: Molding material, Rc: Coating agent, G: Tableware A: Main agent, B: Curing agent

Claims (7)

  A coating treatment process in which a molding material using a thermosetting resin is molded with a molding die to form a basic molded body that is the basis of tableware, and then the surface of the basic molded body is coated with a predetermined coating material. 20 to 30 parts of curing with respect to 100 parts of the main ingredient based on 40 to 50 weight percent polyisocyanate resin and 50 to 60 weight percent acetate ester as the coating material Obtained by the coating treatment step using a liquid coating agent using a two-component mixed moisture curable resin formed by mixing the agent, and applying the coating agent to the surface of the basic molded body. A drying treatment step of obtaining tableware by curing the coated molded body under predetermined drying conditions; Method for producing tableware, characterized in that Ete made.   The method for producing tableware according to claim 1, wherein the thermosetting resin contains at least a melamine resin.   3. The tableware manufacturing method according to claim 1, wherein a compression molding process is used for the molding process.   4. The foil attachment treatment step according to claim 1, further comprising a foil adhesion treatment step of obtaining a foil molding by attaching a predetermined handle-foil to the surface of the basic molding as a pre-process of the coating treatment step. Tableware manufacturing method.   The said coating process process performs the spray coating process which apply | coats the said coating agent with a spray application system with respect to the said base molded object and / or foil molded object. Tableware manufacturing method.   The tableware in any one of Claims 1-5 provided with the surface treatment process which degreases the surface in the said basic molded object with the surface treatment agent using isopropyl alcohol in the front | former stage of the said coating treatment process. Manufacturing method.   The said drying process process contains the touch drying process by standing at normal temperature, and the forced-drying process which drys in a heating environment after this touch drying process. Tableware manufacturing method.

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