TWI345523B - Method and system for producing thermosetting resin molded article - Google Patents

Description

1345523 IX. Description of the invention: [Technical field to which the invention belongs]

The present invention relates to a method and system for producing a thermosetting resin molded article, and more particularly to a method and system for continuously manufacturing a thermosetting resin molded article by a series of steps, which are used a model consisting of a convex half model and a concave half model to provide a glaze coating to the inner/outer surface or to provide a pattern or pattern to the inner/outer surface and further provide a glaze coating To the outside surface. [Prior Art] In the past, a thermosetting resin (or a thermosetting resin) such as a phenol resin, a melamine resin, a urea resin, or the like has been used in a large amount to manufacture, for example, tableware, cooking utensils, food storage containers, and bathrooms by extrusion molding. A molded article such as a tool. The thermosetting resin molding material is reinforced by pushing a reinforcing material (for example, a pulp material) therein. However, the molded article composed of a thermosetting resin molding material alone is easily dyed during use due to a reinforcing material such as pulp. For this reason 'usually used in a glaze coating step - only by the tree

The surface of the molded article is coated with a shaft composed of, for example, a resin such as a melamine resin. X is also p I and 5', for example, as shown in Figure 1 - shown in steps (1) to (7) of the typical forming process, using a convex half model 2 for holding; (substrate material M' the molded article It is formed by extrusion molding _ thermosetting resin 1 using concave half mold 3 (see steps (1) and (10) of Fig. 1, and then coated with shaft material 5 as shown in steps (5) and (6) of g1. The molded article and the use of the concave mold 113486.doc 1345523 Model 3 to form the shaft coating 5 on the outer surface 6 of the molded article. In the form, the molded article 7 is provided with a coating of the shaft on the outer surface 'but its ^ The coating layer of the glaze 5 is not formed on the side surface 8. Further, when the forming σ 4± m Λ is formed on the surface of the molded article 7, it is usually Use the pattern or pattern to increase the selling price. In the case of Γhai, add the steps (3) to (4) (4) of Figure 1 to (4) special printing paper impregnated with resin (dropping... then in the figure!) ) to W' As explained above, it is common to use concave (four) to coat the 2 glaze 5 to prevent deterioration due to gloss reduction, dyeing, etc.: As explained in the article, regardless of the type of material (for example, a pottery is usually decorated on the inside of a dish and other flat-shaped tableware. In the case of a thermosetting resin molded article, the surface will be coated with a glaze.涂居.# g止,丨a^ Layer 5 glaze layer Xiao b is enough to inhibit the food placed on the inner surface and the inner surface is dyed, etc. However, in the jar, cup, rice bowl 'dish bowl, soup plate In the case of other deep-shaped tableware, especially in the case of a thermosetting resin molded article, it is a common practice to decorate only the frequently seen surface and form a glaze coating thereon. Therefore, 'contact with food. There is no glaze layer on the inside surface. For this reason, 'the red tan and the cup are in direct contact with the beverage at the bottom material, so tea tannin and coffee will stain the material and cause the inner surface to become dirty and The gloss is lowered. Further, if a hard cleaning material such as a nylon pad or a cleaner is used to remove the stain, the surface of the inner surface may become scratched and even become easier to be dyed. One step, when I13486.doc 1345523. Washing = tableware, in order to soften the food residue on the tableware will usually 2 ~ and in the hot water - long period ' However, at this time there are the following problems = (four) will stick to no The surface of the axillary layer thus makes it easier to solve this problem by the wooden bar 0. Japanese Patent No. 339 No. 395 proposes to use a model to first provide the inner side of the molded article with a glaze coating layer from (4) The semi-model takes the (four) semi-molded article 'the semi-molded product convex half model' and forms a shaft coating layer on the outer side surface of the molded article. However, since the method is used in the method, the half is taken out in the middle of the process. Molded article: It is moved to the surface of the other half of the model (convex half model), and thus the manufacturing process becomes discontinuous. Further, the semi-molded article is cooled and opened to contract because the semi-molded article is removed from the mold half and allowed to stay slightly. The amount of shrinkage of the shape changes with time, and therefore, when manufacturing the fine mold half model, it is necessary to preliminarily consider the amount of shrinkage during the manufacturing. In the absence of this, it is difficult to determine the amount. In addition to this, there are the following problems: To ensure - quantitative deformation, there are a plurality of constraints in the forming work, for example, setting a specific dwell time after the semi-finished product is removed. It is well known to those skilled in the art that for thermosetting materials, it is difficult to determine the rate of formation shrinkage of each material in mass production. The amount of contraction is expected to depend largely on experience. The control of specific and ancient...the process will become complicated. More prone to defects. On this side: There is room for improvement. SUMMARY OF THE INVENTION Accordingly, the present invention is directed to 113486.doc 1345523, which provides a method for continuously manufacturing a thermosetting resin molded article by a series of steps using a single model and In the system, the molded article can suppress deterioration due to dyeing, gloss reduction, and the like due to use. • According to the present invention, there is provided a method for producing a thermosetting resin molded article and a molded article produced by the method, the method comprising forming and hardening using a model consisting of a concave half model and a convex half model A thermosetting resin to produce a thermosetting resin molded article, during which a series of φ columns are successively implemented as follows: (a) closing the model and bottoming the convex half mold (or within the concave half mold) Forming the material; (b) applying a glaze coating to the surface of the substrate material at least once; (c) moving the formed article from the convex half mold side to the concave half mold side (or from the concave half) The model is laterally moved to the convex mold half dust side), and (d) a glaze coating is applied to the surface of the molded article attached to the concave half mold side (or the convex half mold side) at least once. According to the present invention, there is provided a manufacturing system of a thermosetting resin molded article and a molded article produced by the system, the system comprising: an initial thermosetting tree, a feeding system of the moon, a concave-concave model and a convex half model a model, a model opening/closing system, a model heating and stamping system, a shaft feed system for forming a coating, a box feeding system for forming a decoration, and a model is provided at the model The conveying plate and the transfer plate can be attached to and detached from the convex half mold and the concave half mold. In a preferred aspect of the invention, when the model is opened in the step, the T is placed on the transport plate of the - tight II to - half model by placing the burr portion and the molded article The movement of the molded article is carried out by moving to the other half of the mold, which is formed by the flow of 113486.doc Ί345523 from a cavity when the base material is formed. In the present invention, it may be further provided that the following steps may be performed: forming a web on the surface of the forming surface before forming (at least - times) the glaze coating, and forming (at least once) the shaft material A slab is formed on the surface of the molded article attached to the other-semi-model before the coating. Further

The improvement provides a step of forming a box of sheets on the surface of the molded article attached to one of the mold halves, and/or a step of forming a foil on the surface of the molded article attached to the other half of the mold. Further, a sheet can be formed

a step of attaching to the surface of the molded article of the half mold, and/or a step of forming a sheet between the base material of the molded article surface attached to the other half mold and the glaze layer. The manufacturing system of the thermosetting resin molded article according to the present invention includes: Thermoset I·Shengshuyue feeding system...model consisting of a concave half model and a convex half model, a model opening/closing system, a heating and stamping system, first, a glaze for forming a coating a material feeding system, a stencil feeding system for forming a decoration, a conveying plate disposed at the model, and a energy source. Attached to the fastening system of the sinuous conveyor plate. In these components, all components explained below are conventional components, except for the conveyor plates and their tightness (4) disposed in the mold. When a thermosetting resin is extruded to make a tableware or another container or another molded article, a single-model consisting of a concave half-model and a convex-half model is opened and closed and formed or assembled. Forming a sequence coating, and thus, a decorative or other sheet or glaze coating can be continuously formed using a series of steps by placing the concave half and the convex half of the same model separately above and below The outer surface of the molded article is J 13486.doc CS > 1345523 or on the inner side surface. [Embodiment] Steps (1) to (1) of Figs. 2 and 3 are shown by way of example for producing a thermosetting resin molded article according to the present invention. Preferred method. In steps (1) and (7)

In the same manner as in the form of a figure, a convex-half model _ extruded shape-thermosetting resin 11 is used and the molded article is held. A concave half mold is used and a shaft 15 is provided at the outer side surface 16 of the molded article 14 using, for example, melamine formaldehyde or other resin in the same manner as in the conventional method (see steps in Figs. 2 and 3 (5). And (6))' then, as shown, at steps (7) and (10) of circles 2 and 3, the shaped article 17 is treated to place the axial surface of the outer surface of the shaped article 16 against the concave half-model and also A coating of the shaft material 15 is formed on the inner side surface 18 of the molded article 17. In order to obtain such a thermosetting resin molded article 17, it is necessary to provide a coating material for the outer surface 16 of the molded article 14. Then, when the glaze coating is applied to the inner surface in this step, it is necessary to open the convex half mold 12 and the concave half. mold

Form 13 and the semi-formed article must be moved to the concave half-model 13 on the side of the glaze as shown in step (9). As is well known to those skilled in the art, when the shaped material of the thermosetting resin is extruded, the amount of resin loaded is adjusted to allow some additional material to flow out of the cavity. If the additional material is not fed, the molded article is not supplied with sufficient pressure. The strength, gloss, and the like will become inferior and a satisfactory molded article cannot be obtained. In the present invention, the outflow portion 2 1 (generally referred to as a "burr (or burr)") is used as shown in Fig. 4 and the burr 2 is fabricated to closely contact the wheel attached to the half of the model. Board 22. Note that in the following description, the burr portion 21 of Fig. 4 will be referred to as "formed burr portion". 113486.doc -10- 1345523 The conveying plate 22 has hook members 23 attached to both ends thereof. As shown in (1) and (2) of Fig. 4, either the convex half mold 13 and the concave half mold 12 are constructed to be joined by the fastening members 23 (e.g., the hook members 23) of the conveying plate. If the hook member 23 for fastening the conveying plate 22 is attached to the convex half mold 12, the conveying plate 22 is moved to the convex half mold side, and if it is connected to the concave half mold 1 3 ', the conveying plate 22 is Moved to the side of the concave half model. The molded article which is being processed as the conveying plate is moved will also move up and down together with the formed burr portion 21 placed on the conveying plate 22. The shape of the conveying plate 22 which contacts the formed burr portion 21 which holds the molded article during the movement is not particularly limited. The conveying plate may be circular or angular, elliptical or another shape depending on the shape of the molded article. Further, the conveying plate 22 may contact the formed burr portion 21 at the entire periphery of the formed burr portion 21 or partially. As long as the semi-formed article being formed is movable, according to the present invention, the inner side surface of the molded article 17 can be obtained by the steps (9) and (1) of Figs. 2 and 3 in the same manner as the step and (6). 18 provides a glaze coating. In a preferred aspect of the present invention, the outer side surface and/or the inner side surface of the molded article 17 can be subjected to steps (3) and (4) in FIGS. 2 and 3 by the same method as explained above with reference to FIG. And/or steps (7) and (8) are formed with a ruthenium sheet to provide a pattern or pattern or the like for the final molded article at the inner side surface and/or the outer side surface. EXAMPLES Embodiments of the present invention will now be explained with reference to the drawings, which are identified as 113486.doc f «·· ·-. -II - 丄345523. For the use of melamine resin - an example of a cylinder, wherein Steps (1) to (11) of 2 and 3 are applied to the inner and outer surfaces of the brocade and a glaze coating is formed on the two surfaces. Steps (1) to (4) of Figures 2 and 3 are a plurality of steps (7) to (10) for decorating the outer side of the molded article and providing a glaze coating thereon. The surface is provided with a step of coating the coating, and step (11) indicates the step of removing the finished product. • ^ 'First' at step (1) of @2 and 3, the melamine resin forming material (10) is placed between the second half model 12 and the concave half model 13, and then closed at step (2) of Figs. 2 and 3. The mold is formed by molding the base material μ of the molded article. Similar to the past, these forming conditions are determined by the type of thermosetting resin used and the type of the molded article. However, it is not a specific requirement of the present invention. At step (3) of FIGS. 2 and 3, a decorative printing paper (box) 19 is supplied from the outside to the outer side surface 16 of the molded article base material on the convex half mold 12, and the decorative printing paper passes through a The resin (for example, melamine resin, etc.) is impregnated and dried. At step (4), the model is closed and thermally bonded under predetermined conditions (eg, 150 to 180. 〇 >< 15 to 60 seconds, in the case of melamine resin, 'best 16 (TC x 30 seconds) The foil. At step (5) of Figures 2 and 3, the sheet 19 has been formed, the mold is opened, and then the shaft 15 is supplied at step (6), and the glaze coating is applied. At the time of opening the model, the molded article is moved to the concave half-model 丨 3. In the state, the box 19 is supplied in the same manner as described above with respect to the convex half-model 12. In the step (8) At the end, the mold is closed and the foil is applied. Therefore, the foil 19 is thermally bonded to the inner side surface of the molded article. At step (9), the shaft material 113486.doc 12 1345523 15 is supplied to the inner side surface of the 5 hr. θ nt J clothing back between the self-sheet layer and the convex half model. At step (1 〇) at & '. Hai model and shape the glaze coating on the inside surface of the molded article By the above step, it is possible to obtain a molded article 17 having a glaze coating on the inner and outer surfaces of the molded article.

The molded article thus obtained in the tb phase tb is decorated on both the outer side surface and the inner side surface of the molded product, and is provided with a shaft coating on both surfaces.

Since there is a layer, there is an advantage that it is possible to suppress the deterioration caused by the dyeing and the decrease in gloss due to use over time. Next, the position of the molded article when the shaft material is supplied to and supplied to the outer side surface at steps (3) and (7) of FIGS. 2 and 3, and steps (7) and (9) will be explained below. The movement of the molded article when the g piece is supplied to and supplied to the inner side surface.

The model has the structures shown in FIGS. 4 and 5 (1) to (4), and FIGS. 4 and 5 (1) and (2) are side views of the closed state of the model and respectively show the hooks "carrying the bottom half model (also That is, the state of the convex half model 12) and the upper half model (that is, the concave half model 13), and (3) of FIG. 4 show the conveying plate 22 between the concave half model 13 and the convex half model 12, and FIG. 4 (4) shows the structure of the formed burr portion 21. Note that the molded article is indicated by the numeral 25. Since the hook 23 catches the rod 24 of the concave half model or the convex half model for connecting in the closed state of the model, when it is turned on In the model, the conveying plate 22 will rise and fall to the connected half of the mold and the molded article will move with the conveying plate. Note that the number of the hooks 23 is usually two, and the other one is set in (1) and (Fig. 4). 2) The opposite side surface, but can also be set to a larger number. As shown in Figure 4 (4), the household 7' is moved under the shape of i. The mouth is formed by the molded product. 113486.doc -13- 1345523 The burr portion 21 is supported on the conveying plate 22, so that the formed burr portion 21 is required to The state of the conveying plate 22 in the forming process is shown in the side views (1) to (1) of Fig. 3. That is, first, (1) to (5) of Fig. 3 show the following states.

The base material is shaped to decorate the outer side surface and form the glaze coating, and the hooks 23 are engaged with the convex half mold 12 and the molded article is attached to the convex half mold 12. Next, (7) to (1〇) of Fig. 3 show the following state: the hooks 23 are all stuck to the concave mold half.

The pattern 13 and the conveying plate 22 move together with the concave half mold in the same manner as the molded article is attached to the concave half mold 13. Note that the size of the burr portion 21 which is limited to 1 mm and 20 mm' contact with the conveying plate is not particularly 'but preferably has a thickness of 〇. 2 to 5 mm, more preferably 〇3 to 3 and preferably has a width of 0.3. To 50 mm, the better width is 丨 to

If the thickness is less than 0.2 mm, the formed burred portion will not have sufficient strength to break the Moon-shaped molded article and sometimes rupture, however, if the 々° mm is removed, the finishing of the formed burr portion will become It’s hard to get g. If the width is less than 〇3 milli#, then in some cases, the shape shrinkage will cause the 4 burrs to be unable to get caught in the conveyor. If the width is over 5 mm, it will be difficult to remove the finishing of the formed burr portion.

Figures 6 and 7 respectively show a J example of a conveyor plate and its fastening system of the system of the present invention. In these examples, two and four thermosetting resin 4 shaped articles 16 (1) are simultaneously produced, respectively, or Figure 7 (1) shows that the conveying plate is cut. An example, 0 6 (2) or Figure 7 (2) shows that, as the case, the inside is included! The 31 or 41 "i includes a semi-finished material formed from the base material without the 113486.doc product" is fixed by a conveying plate 32 or 42 to open the model. - The first diver through hole 34 or 44 is composed of A through pin 33 or 43 is fixed. The semi-molded article formed by a convex half mold (not shown) can be moved together with the concave half-model assembly 3 1 or 4 1 by forming a burr portion (not shown). The burr portion formed has - sufficient to carry the size and thickness of the semi-molded article (for example, 〇 3 m or more) ^ the through pin 33 or 43 can be controlled by, for example, an electrically controlled air cylinder

The direction of the arrow moves to automatically move the concave half model 31 or 4 上下 up and down. Figure 45 shows a guide pin.

The melamine resin cylinder thus manufactured was subjected to the color test by the following method. First, 1440 cubic centimeters of water was placed in a stainless steel. Then, put 80 grams of Nescafe® instant coffee, 45 grams of cheese Creap8 and 5 grams of sugar to produce a concentration about 4 to 5 times higher than regular coffee. A comparative example of the red matter produced by the cylinder of an example of the present invention and the prior art (similarly, provided with a decorative and glaze coating only on the outer side surface) is absent from the coffee. Next, a lid with a hole covers the container. : A reflux condenser was attached to the well to prevent evaporation of the water and the contents were continuously cooked for 6 hours, 12 hours, 24 hours. The table below shows the results obtained in this way. 1l3486.doc 15 1345523

The staining values in Table 1 are visually and twice labeled as brown (indicated by ",). Into the first;, color 2 2 feels step by step to evaluate the change from no change (indicated by "〇") to a significant decrease in gloss (indicated by "1〇"). In the above manner, the comparison examples are on the inside. The surface is greatly dyed, and an example of the present invention is dyed to a small extent on both the inner side surface and the outer side surface of the molded article. Further, in the example of the present invention, the gloss does not decrease at the inner side surface and the outer side surface. On the other hand, the cylinders and the like produced in the examples of the present invention have a significant advantage of preventing staining by coffee' and are believed to have similar effects on tea, seasonings and other food products. There is also an effect of suppressing the decrease in gloss. When the gloss is lowered, it cannot be recovered by a detergent or a bleaching agent, and therefore it is extremely important to prevent gloss reduction in maintaining the value of the tableware. Industrial Applicability The present invention can provide a molded article a thermosetting resin molded article composed of a method for producing the molded article, the molded article being on the inner side by a series of continuous steps Both the face and the outer surface are decorated and further provided with a glaze coating covering the decoration to suppress the inferior U caused by the dye gloss reduction during use, such as dyeing 113486.doc -16·1345523 Tableware used in the collective f phase to use the washing, bleaching and disinfecting machinery in hospitals, nursing homes, school 'employees' self-service halls and other facilities that need to wash a large number of tableware at one time. [Simplified illustration] Figure 1(1)- (7) A explanation of a forming process for forming a conventional thermosetting resin. Fig. 2 (1H11) explains a forming process for producing a thermosetting resin molded article of the present invention. Fig. 3(1) - (1)) is an explanatory view showing the state of the outer side of the mold in the molding process for producing a thermosetting resin molded article of the present invention. Fig. 4 (1H4) is a display - the semi-formed product moving mechanism of the present invention BRIEF DESCRIPTION OF THE DRAWINGS Fig. 5 is a view showing an example of a conveying plate and a fastening system thereof, which is one of the systems of the present invention. Fig. 6 (υ·(3)-- shows the conveying plate of the system of the present invention and its tightness System-example view 'where two thermosetting resins are simultaneously fabricated into liters; / Figure 7(1) (3) shows a view of one example of a conveyor plate and its fastening system of the system of the present invention, Among them, four thermosetting resin molded articles are manufactured at the same time. [Main component symbol description] 1,11 2, 12 Thermosetting resin convex half model 113486.doc -17- 1345523 3,13 Concave half model 4, 14 Molded product (base material) 5 , 15 glaze 6, 16 outer side surface of molded article 7, 17 glaze coated molded article 8, 18 inner side surface of molded article 9, 19 foil 21 formed by burr portion 22, 32, 42 conveying plate 23, 33, 43 Fastening member (hook or pin member) for conveying plate 24 Rod 25 Molded product 31, 41 Concave half model assembly 34, 44 Through hole 45 Guide pin 113486.doc 18-

Claims (1)

1345523 -, the scope of application of the patent: 1. A thermosetting resin molded article, a method of smelting, comprising: forming and hardening a thermosetting property using a model consisting of a concave half-shaped type and a .w, +-type type The resin is formed into a resin, a solid resin molded article, and a series of the following steps are continuously performed during this period. The γB is used to close the image and is on the convex half model (or in the concave half model) , Λ / w + ' . inner) forming-substrate material; (8) applying a sleeve coating to the surface of the substrate substrate at least once 丨 (C) moving the molded article laterally from the convex half model To the side of the concave half of the model (or from the side of the concave half of the model to the side of the convex half of the model); and J to () to apply a glaze coating to the side of the concave half model Λ i/, iw (or the side of the convex model) on the surface of the molded article. 2. As requested! The manufacturing method further includes, when the model is opened in the step (4), moving the molded article from the convex half mold side to the side by placing one of the burrs on a conveying plate fastened to the mold The concave half-model side (or from the concave half-model side to the convex-half model side), the hair φ edge is formed by the effluent from a cavity when the base material is formed, as claimed in claim 1 or 2 The manufacturing method 'further includes a step of: forming a foil at least once on the surface of the molded article attached to the convex half mold side before forming the glaze coating. 4. The manufacturing method of claim 1 or 2, further comprising the step of: forming at least one foil at a time on the molded article attached to the side of the concave mold half before forming the glaze coating On the surface. 5. The manufacturing method of claim 1 or 2, further comprising the step of forming a foil on the surface of the molded article attached to the convex mold side, 113486.doc 1345523 and/or a step of forming a foil on the S-surface of the molded article attached to the side of the concave mold half. A manufacturing method according to the item 1 or 2, further comprising a step of forming a foil between the base material of the molded article attached to the convex half mold and the shaft layer, and/or a A step is formed between the base material attached to the tantalum molded article of the concave half mold and the glaze layer. A manufacturing method according to the item 1 or 2, wherein the formed burr required to move the molded article to the concave half-model or the convex half mold has a thickness of 0.2 to 5 mm and a width of 0.3 to 50 mm. A thermosetting resin molded article obtained by the method of any one of claims 7 to 7. A manufacturing system of a thermosetting resin molded article, comprising: a feeding system of one of a starting thermosetting resin, a model consisting of a concave half model and a convex half model, a model opening/closing system, and a model a heating and stamping system, a glaze feeding system for forming a coating, a foil feeding system for forming a decoration, a conveying plate disposed at the model, and one of the conveying plates A fastening system that can be removed from the convex half model and the concave half model. 113486.doc