JP2007136841A - Resin molding with film, method for producing the molding, and injection molding mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide a resin molding with a film high in accuracy which does not need cutting an unnecessary part of the film. <P>SOLUTION: In the resin molding with the film 1, the film 2 is attached to a part of the surface of the resin molding 6. The resin molding 6 has a recess inside. The film 2 covers the side from a top panel on the opposite side of the recess to reach at least the opening peripheral end surface 9 of the recess. The end part 11 of the film 2 exists from the side on the opening peripheral end surface 9 of the recess or the inner wall surface of the recess. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a resin-molded body with a film, a method for producing the same, and a mold for injection molding.

  Conventionally, a film insert molding method in which a resin film and a film are fused and integrated by placing a film for an insert in an injection mold and injecting a molten resin therein is, for example, as follows. It is done in a way like this.

  In addition to preparing a preformed insert film, an injection mold comprising a female mold having a concave portion and a male mold having a convex portion is prepared. Next, when the film is placed in the female concave portion and the injection mold is closed, the peripheral edge of the male convex portion and the peripheral edge of the female concave portion are crossed to cut unnecessary portions of the film. Thereafter, the molten resin is injected into a space (cavity) formed by the female concave portion and the male convex portion, and the film and the resin molded body made of the molten resin are integrated. (For example, see Patent Document 1 and Patent Document 2).

  In addition, without cutting unnecessary parts of the insert film, the film is placed in the injection mold, the molten resin is injected into the cavity, and after the molten resin is solidified, the mold is opened and integrated. Also known is a method of cutting unnecessary portions of the film. (For example, see Patent Document 3).

There is also known a method in which an unnecessary portion of an insert film is previously cut by a cutting means such as a laser or a cutter, the film is placed in an injection mold, and a molten resin is injected there.
JP-A-57-102328 (Claims etc.) JP-A-9-234769 (Claims etc.) JP 60-097816 (Claims etc.)

  However, the conventional manufacturing method has the following problems. In the method of cutting unnecessary portions of the film for insert by crossing the peripheral edge of the male convex part of the injection mold and the peripheral part of the female concave part, the peripheral edge of the male convex part of the injection mold High accuracy is required for each dimension of the peripheral edge of the female recess. However, by injecting the molten resin, a temperature difference is generated between the male mold and the female mold of the injection mold, and the expansion coefficient of each mold is different. For this reason, when the peripheral edge of the male convex portion and the peripheral edge of the female concave portion intersect, the peripheral edge of the male convex portion and the peripheral edge of the female concave portion collide, and the peripheral edge portion is damaged. Conversely, a gap may occur at the intersection. Therefore, there is a problem that a highly accurate molded product cannot be obtained.

  In addition, film debris generated by cutting unnecessary portions of the insert film may adhere to the peripheral edge of the injection mold. For this reason, possibility that the peripheral part of a metal mold | die will be damaged becomes high. Therefore, it is necessary to frequently replace the mold, and there is a problem that the cost of the mold and the trouble of replacing the mold are required. In addition, there is a risk that film debris will adhere to the injected resin and the defective rate of the molded product will increase.

  Moreover, when cutting the unnecessary part of the film for inserts after completion of a molded object, it is necessary to cut | disconnect so that a molded object may not be damaged. For this reason, there is a problem that very high cutting accuracy is required, and advanced technology and equipment are required.

  Further, in the manufacturing method using a cutting means such as a laser or a cutter, expensive equipment is required and the process becomes complicated, resulting in an increase in cost. There is also a problem that very high cutting accuracy is required.

  The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to cut an unnecessary portion of the film for insert, and to provide a highly accurate film at a low cost. The object is to provide a resin molded product with adhesive.

  In order to achieve the above object, the present invention is a resin molded body with a film in which a film is attached to a part of the surface of a resin molded body, the resin molded body has a concave portion inside, and the film has a concave portion. The side surface is covered from the opposite top surface to at least the opening peripheral end surface of the recess, and the end of the film is a resin-molded body with a film existing on the opening peripheral end surface of the recess or the inner wall surface of the recess.

  Thus, since the edge part of a film exists in the opening peripheral end surface of a recessed part, or the inner wall face of a recessed part from the side surface of the resin molding with a film, the unnecessary part of the film for inserts does not arise. For this reason, it is not necessary to cut the unnecessary part of the film for inserts. Therefore, a highly accurate resin molded body with a film can be obtained. The concave portion of the resin-molded body with a film may be a space having four side surfaces or a part lacking some of the side surfaces.

  Another embodiment of the present invention is a resin molding with a film in which a film is attached to a part of the surface of a resin molded body using an injection molding mold for performing injection molding by arranging at least two molds to face each other. A method for producing a resin-molded body with a film for producing a body, wherein one or all of the end portions of a film are bent inward in the concave portion of one mold having a concave portion among injection molds. Formed from a film placement step of placing a film, a mold placement step of placing the other die opposite to the concave portion of the mold for injection molding after the placement of the film, and the other die and film A method for producing a resin-molded product with a film comprising a molten resin supply step for supplying a molten resin to a space to be formed and a molded-product taking-out step for taking out a resin-molded product with a film after the molten resin is cured.

  Thus, since the film cutting process is not employed, film debris generated by cutting unnecessary portions of the insert film does not occur. For this reason, the problem that the defect rate of a molded object becomes high does not arise by the debris of the film adhering to the injected resin. Further, since no cutting means such as a laser or a cutter is used, there is no problem that the process is complicated or the cost is increased. Therefore, the manufacturing process can be simplified, and a highly accurate resin molded body with a film can be manufactured efficiently.

  Another aspect of the present invention is a method for producing a resin-molded body with a film, wherein the film placement step in the previous invention includes a bending step of bending a part or all of the end portion of the film inward. For this reason, even when a film preformed in a cylindrical shape is used, the film is placed in a recess, the opening surface of the recess is narrowed, and the end on the opening side of the film is bent inward. A resin-molded article can be produced. Therefore, it is not necessary to bend the end portion in the preform stage, and the resin-molded body with a film can be produced simply by bending it just before injection molding, so that the production becomes easy.

  Another embodiment of the present invention is an injection mold for performing injection molding by disposing at least two molds so as to face each other, one mold having a recess, and a member for narrowing the opening surface of the recess A narrow member disposed on a part or all of the opening end surface of one mold during injection molding, and another mold disposed opposite to the one mold and the narrow member during injection molding. It is set as the injection mold provided with.

  As described above, by providing the narrow opening member, the film portion extended from the side surface of the resin-molded body with a film is bent toward the concave portion. For this reason, the unnecessary part of the film for inserts does not arise. Further, it is not necessary to frequently replace the mold, and there is no problem that the cost of the mold and the labor of replacing the mold are required.

  The film is placed on the injection mold as well as a method in which the film is preformed so as to substantially match the shape of the concave surface of the injection mold and then placed on the injection mold. Alternatively, the film may be disposed in the recess of the injection mold. In the former method, there are a method of preforming a bent portion and a method of forming a bent portion after placing a preformed film on a mold.

  In this invention, the material which forms a resin molding is not specifically limited as long as it can utilize as a resin molding of this invention. As a material for forming the resin molded body of the present invention, a thermoplastic resin is particularly preferable. Examples of such thermoplastic resins include polyethylene (PE), polypropylene (PP), polybutylene (PB), ionomer, ethylene / vinyl acetate resin (E / VAC), ethylene / vinyl alcohol resin (E / VAL), Olefin resins such as polymethylpentene (PMP), cyclic olefin copolymer (COC), chlorinated polyethylene (PE-C), polyvinyl chloride (PVC), polyvinylidene chloride (PDVC), ethylene / vinyl chloride resin ( VC / E), vinyl chloride resins such as chlorinated polyvinyl chloride (PVC-C), polystyrene (PS), styrene / acrylonitrile resin (SAN), acrylonitrile / butadiene / styrene resin (ABS), AAS resin, AES resin , ACS resin, MBS resin, styrene / N-phenylmer Imido resin, styrene resin such as styrene / maleic anhydride resin, acrylic resin such as polyacrylonitrile, polyacrylamide, polyacrylic acid, polymethyl methacrylate (PMMA), polyamide 6 (PA6), polyamide 66 (PA66), polyamide 610 (PA610), polyamide 612 (PA612), polyamide 12 (PA12), polyamide 11 (PA11), polyamide 46 (PA46), polyamide MXD6 (PA MXD6), modified polyamide 6T, and polyamides (PA) such as monomer casting polyamide Polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polycyclohexylenedimethylene Thermoplastic polyesters such as phthalate (PCT), polyacetal (POM), polycarbonate (PC), polyphenylene ether resins such as modified polyphenylene ether (m-PPE), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), Tetrafluoroethylene / hexafluoropropylene copolymer (FEP), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer, polychlorotrifluoroethylene (PCTFE), ethylene / tetrafluoroethylene copolymer (E / TFE), Fluorine resins such as polyvinylidene fluoride (PVDF) and polyvinyl fluoride (PVF), liquid crystal polymers such as liquid crystal polyester (LCP), polyacrylate (PAR), thermoplastic polyimide (TPI) , Polyamideimide (PAI), polyetherimide (PEI) and other thermoplastic imide resins, polyketone (PK), polyetherketone (PEK), polyetheretherketone (PEEK), polyarylketone (PAEK), aliphatic Ketone resins such as polyketone (APK), sulfone resins such as polysulfone (PSF) and polyethersulfone (PES), polybenzimidazole (PBI); polyparabanic acid (PPA) rayon, cellophane, cellulose ester, cellulose acetate, three Examples thereof include polysaccharides such as cellulose acetate, cellulose ether, and ethyl cellulose, and glass fiber reinforced thermoplastics (FRTP).

  Moreover, as another material which comprises the resin molding of this invention, a thermosetting resin can also be employ | adopted, for example. Specifically, phenol resin (PF), urea resin (UF), melamine resin (MF), unsaturated polyester (UP), alkyd resin, silicone resin (SI), epoxy resin (EP), urethane resin (PUR) , Polyvinyl ester, diallyl polyphthalate (PDAP), polyimide (PI), bismaleimide / triazine resin (BT resin), furan resin (FF), xylene resin, guanamine resin, maleic resin, dicyclopentadiene resin (DCPD), heat Examples thereof include curable reinforced plastic (FRP).

  In the present invention, as a material constituting the film, not only various resin materials used for the resin molded body, but also a metal such as aluminum, an alloy such as an aluminum alloy, or a cloth may be used.

  According to the present invention, it is not necessary to cut unnecessary portions of the film, and a highly accurate resin molded body with a film can be provided at low cost.

  Next, preferred embodiments of a resin-molded body with a film, a method for producing the same, and an injection mold according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited at all by these embodiments.

(First embodiment)
FIG. 1 is a perspective view of a resin-molded body 1 with a film according to the first embodiment. Moreover, FIG. 2 is sectional drawing at the time of cut | disconnecting the resin-molded body 1 with a film shown in FIG. 1 by the AA line. Note that, in the cross-sectional views shown after that including FIG. 2, only a partial region of the cross-section is indicated by hatching in consideration of ease of viewing.

  As shown in FIG. 2, the resin-molded body 1 with a film is a molded body having a recess that is recessed from one surface (the lower surface shown in FIG. 2) to the inside. The resin molded body 1 with a film is composed of a film 2 and a resin molded body 6. The film 2 includes a top surface layer 7 that covers the top surface of the resin-molded body 1 with a film, a side layer 8 that covers the side surface of the resin-molded body 1 with a film connected from the top surface layer 7, and a film that is formed from the side layer 8. The peripheral resin layer 11 is provided with a peripheral layer 11 extending in the horizontal direction toward the opening surface of the concave portion of the resin-molded product 1. The peripheral layer 11 is an end portion of the film 2. The resin molded body 6 is injection-molded into substantially the same shape as the resin molded body 1 with a film. The opening peripheral end surface 9 formed around the concave portion of the resin molded body 6 is flush with the peripheral layer 11 of the film 2 to form one substantially horizontal opening peripheral end surface 10.

  That is, the peripheral layer 11 does not protrude from the opening peripheral end surface 9 of the resin molded body 6, and forms a part of the opening peripheral end surface 10 in a state of wrapping around the opening peripheral end surface 9. In addition, the form which has a side surface which is not perpendicular | vertical with respect to the top | upper surface of the resin molded object 1 with a film may be sufficient as the resin molded object 1 with a film. Alternatively, the resin molded body 1 with a film in which the film 2 covers the entire opening peripheral end surface 9 of the resin molded body 6 or enters the recess of the resin molded body 6 may be manufactured.

  FIG. 3 is an enlarged view of a portion B of the film 2 shown in FIG.

  As shown in FIG. 3, the film 2 includes a base sheet 3, a design layer 4 immediately below the base sheet 3, and an adhesive layer 5 directly below the design layer 4.

  The base sheet 3 is preferably made of an acrylic resin, a polycarbonate resin, a polystyrene resin, a polyester resin, a urethane resin, or the like. However, the material of the base sheet 3 may be another resin, aluminum, or the like.

  The pattern layer 4 is provided in order to form a decoration such as a pattern or characters on the surface of the resin molded body 1 with a film. As a method for forming the pattern layer 4, various decoration methods such as a screen printing method, a gravure printing method, a roll coating method, a gravure coating method, a vacuum deposition method, and a sputtering method can be employed. However, the above-mentioned decoration method is only an example, and other decoration methods may be adopted.

  The adhesive layer 5 is for firmly bonding the resin molded body 6 and the film 2 when the molten resin is injection-molded, and a heat-sensitive or pressure-sensitive material suitable for the resin molded body 6 is used. Can do. Further, a structure in which a protective layer for protecting the design layer 4 from heat or pressure at the time of injection molding is separately provided on the outside of the adhesive layer 5, that is, in order from the base material sheet 3, the design layer 4, the adhesive layer 5, and protection You may employ | adopt the structure laminated | stacked with the layer.

  Further, as the material of the resin molded body 6, a resin such as polycarbonate, styrene copolymer, or polystyrene can be suitably used. In addition, when the material of the resin molding 6 has high affinity with the base material sheet 3 or the design layer 4, the adhesive layer 5 is not necessarily employed.

  FIG. 4 is a schematic configuration diagram of the injection mold 15 according to the first embodiment. FIG. 5 is a flowchart showing manufacturing steps of the resin-molded body 1 with a film according to the first embodiment. 6 and 7 are diagrams showing the manufacturing process of the resin-molded body 1 with a film step by step.

  As shown in FIG. 4, the injection mold 15 is driven by a female mold (one mold) 20 having a concave portion 21, a male mold (the other mold) 30 having a convex portion 31, and a motor or the like. And a possible bending mechanism 25. The female mold 20 and the male mold 30 are closed to form a space (cavity) that matches the shape of the resin-molded body 1 with a film. The bending mechanism unit 25 is joined to the female die 20 via a rail (not shown). The bending mechanism 25 is a narrow member that can move along the rail to narrow the opening surface of the recess 21 and move in the opposite direction as shown by the solid line and the alternate long and short dash line in FIG. .

  When manufacturing the resin-molded body 1 with a film, as shown in FIGS. 6A and 6B, first, the concave portion 21 of the female mold 20 is pushed so as to substantially match the shape of the concave portion 21. The film 2 in a state of being reformed or punched is placed (step S101 in FIG. 5: a part of the film placement process). Next, the bending mechanism part 25 is moved in the direction of narrowing the opening surface of the recess 21 (the direction of the arrow A in FIG. 6C) (step S102 in FIG. 5: bending process (part of the film arranging process)). . As a result, as shown in FIG. 6C, the peripheral layer 11 of the film 2 protruding from the recess 21 is bent toward the inside of the opening surface of the recess 21 by the bending mechanism portion 25.

  Next, the convex part 31 of the male mold 30 is set on the female mold 20 so as to be inserted into the concave part 21 in which the film 2 is arranged (step S103 in FIG. 5: mold arranging step). As a result, as shown in FIG. 7A, a space (cavity) 32 is formed between the convex portion 31 of the male mold 30 and the film 2. Next, molten resin is supplied to the space (cavity) 32 from the molten resin injection port 35 penetrating the convex portion 31 of the male mold 30 (step S104 in FIG. 5: molten resin supply step). Thereafter, the molten resin is cured (step S105 in FIG. 5). As shown in FIG. 7B, when the molten resin is cured, the portion becomes a resin molded body 6. Thereafter, as shown in FIG. 7C, the mold is opened, and the bending mechanism 25 is moved in a direction (in the direction of arrow B in FIG. 7C) to widen the opening surface of the recess 21 to the original state. Then, the resin-molded body 1 with a film in which the film 2 is formed on the surface of the resin-molded body 6 is taken out (step S106 in FIG. 5: molded body taking-out step).

  According to the manufacturing method of the first embodiment, the peripheral layer 11 of the resin molded body 1 with a film is molded in a state where it is folded inward by the folding mechanism 25, so that an unnecessary part of the film 2 for insert is unnecessary. Does not occur. The preform of the film 2 is performed by an arbitrary processing method such as stamping or vacuum forming. Further, the preform of the film 2 may be formed into a shape in which the peripheral layer 11 is bent in addition to forming the peripheral layer 11 into a shape that is not bent inward of the recess 21. In addition, you may employ | adopt the film 2 for inserts which does not preform.

(Second Embodiment)
Next, a second embodiment of the resin molded body with a film according to the present invention, a manufacturing method thereof, and an injection mold will be described.

  The resin molded body with film and the method for producing the resin molded body with film according to the second embodiment are the resin molded body with film and the method for producing resin molded body with film according to the first embodiment described above. Are the same. The injection mold according to the second embodiment has many common parts with the injection mold according to the first embodiment. For this reason, hereinafter, in the description of the second and subsequent embodiments, the resin molded body with film, the method for producing the resin molded body with film, and the common parts of the injection mold will be described as the first. The same reference numerals as those of the embodiment are used, and different parts are indicated by different reference numerals. Moreover, the overlapping description is abbreviate | omitted about a common part.

  FIGS. 8A and 8B show an injection molding die 15 used for manufacturing the film-formed resin molded body 1 according to the second embodiment (A) and an ejector that removes the bending mechanism 25 from the female die 20 ( It is a figure which shows the state of B).

  As shown in FIG. 8A, an injection mold 15 according to the second embodiment includes a female mold (one mold) 20 having a concave portion 21 and a male mold (the other mold) having a convex portion 31. ) And a bending mechanism portion (narrow mouth member) 25. The female die 20 is connected to two columnar portions 26, 26 extending on the opposite side of the concave portion 21, and a connecting portion for connecting the columnar portions 26, 26 to form a space 40 on the opposite side of the concave portion 21 of the female die 20. 27. In addition, movable shafts 28 and 28 are provided, which are connected to bending mechanism portions 25 and 25 arranged at the peripheral edge of the recess 21, respectively, and are movably inserted into the female die 20. The end portions of the movable shafts 28 and 28 are connected to the connecting portion 29 in the space 40.

  When the resin-molded body 1 with a film is manufactured using the injection mold 15, the projection 31 of the male mold 30 shown in FIG. 8A and the film 2 disposed in the recess 21 of the female mold 20. Molten resin is supplied from a molten resin injection port 35 penetrating the convex portion 31 of the male mold 30 into the space formed therebetween. Thereafter, the molten resin is cured, and as shown in FIG. 8A, the female mold 20 and the male mold 30 are separated in opposite directions to perform mold opening. Thereafter, as shown in FIG. 8 (B), the connecting mechanism 29 connecting the movable shafts 28 and 28 is moved in the direction of the concave portion 21, whereby the bending mechanism portions 25 and 25 connected to the movable shafts 28 and 28 are changed into the female mold 20. Remove from. In this state, the resin-molded body 1 with a film in which the film 2 is formed on the surface of the resin-molded body 6 is taken out. In addition, the molten resin injection port 35 may be provided in a form penetrating into the concave portion 21 of the female mold 20.

  Thus, by using the injection mold 15 according to the second embodiment, it is not necessary to employ a special cutting means, the quality is excellent, the yield is good, and the resin molded body 1 with a high precision film. Can be manufactured.

(Third embodiment)
Next, a third embodiment of the resin-molded body with a film according to the present invention, a method for producing the same, and an injection mold will be described.

  FIG. 9 is a perspective view of a resin-molded body 16 with a film according to the third embodiment. Moreover, FIG. 10 is sectional drawing at the time of cut | disconnecting the resin-molded body 16 with a film shown in FIG. 9 by the AA line.

  As shown in FIG. 9, the resin-molded body 16 with a film has a columnar shape and includes the film 2 and the resin molded body 6. The film 2 includes a top surface layer 7 that covers the top surface of the resin-molded body 16 with a film, a side layer 8 that covers the side surface of the resin-molded body 16 with a film connected from the top surface layer 7, and the side layer 8. The peripheral layer 11 extends in the horizontal direction toward the opening surface of the recess 21 of the resin molded body 16 with a film. The peripheral layer 11 is an end portion of the film 2. The resin molded body 6 is injection-molded into substantially the same shape as the resin molded body 16 with a film. The resin molded body 16 with a film has an opening peripheral end surface 10 in a form in which the opening peripheral end surface 9 of the resin molded body 6 is entirely covered with the peripheral layer 11 of the film 2. In addition, the form of the resin-molded body 16 with a film is not restricted to this form. The resin-molded body 16 with a film can be in any form such as a rectangle, a gourd, or a polygon.

  FIG. 11 shows the state (A) when the mold for injection molding used for manufacturing the resin molded body with a film according to the third embodiment is opened and the folding mechanism portion 25 with the opening surface of the recess 21 in the original state. It is a figure which shows the state at the time of the ejector (B) moved to the direction (arrow B direction of FIG.11 (B)) to expand.

  As shown in FIG. 11A, an injection mold 15 according to the third embodiment includes a female mold (one mold) 20 having a concave portion 21 and a male mold (the other mold) having a convex portion 31. ) 30 and a bending mechanism portion (narrow opening member) 25. The bending mechanism section 25 has a hole 25 a that penetrates in the direction from the male mold 30 toward the female mold 20. The holes 25a are formed obliquely in a direction that widens from the male mold 30 side to the female mold 20 side in the bending mechanism section 25. In addition, a recess 20a is provided inside the female mold 20 from the contact surface with the bending mechanism 25.

  On the other hand, an angular pin 17 that can be inserted into the hole 25 a is provided on the side of the convex portion 31 of the male mold 30. In a state where the angular pin 17 passes through the hole 25a and is inserted into the recess 20a, the male die 30 moves the bending mechanism portion 25 in the direction of narrowing the opening surface of the recess 21 to form a cavity. When the male mold 30 is moved away from the female mold 20, the angular pin 17 comes out of the concave portion 20a, and comes out of the hole 25a while moving the bending mechanism portion 25 in the direction of arrow B shown in FIG. . Then, when the angular pin 17 comes out of the hole 25a, the bending mechanism portion 25 stops the movement of the opening peripheral end surface of the recess 21 on the rail. In this state, the resin-molded body 16 with a film is taken out. The molten resin injection port 35 may penetrate the recess 21 of the female mold 20.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and can be implemented in various modified forms.

  For example, the end of the film 2 may be extended to the inner wall surface of the recess of the resin molded body 6.

  FIG. 12 is a cross-sectional view of the film-formed resin molded body 19 having such a form cut along a line similar to the AA line shown in FIG.

  As shown in FIG. 12, the resin molded body 19 with a film includes a film 2 and a resin molded body 6. The film 2 includes a top surface layer 7 that covers the top surface of the resin-molded body 19 with a film, a side layer 8 that covers the side surface of the resin-molded body 19 with a film connected from the top surface layer 7, and the side layer 8. The peripheral layer 11 extends in the horizontal direction toward the opening surface of the concave portion of the resin molded body 19 with a film, and the inner wall layer 12 enters the concave portion of the resin molded body 19 from the peripheral layer 11. The inner wall layer 12 is an end portion of the film 2.

  Further, the injection mold according to the present invention is not limited to each of the injection molds 15 described above. The form is not particularly limited as long as the bending mechanism portion 25 can be set in the direction in which the opening surface of the recess 21 of the female mold 20 is narrowed and the set state can be released when the resin molded body 1 with a film is taken out. . Therefore, the bending mechanism unit 25 may be attached to the male mold 30. In addition, the bending mechanism 25 can be released by a separation method that separates from the female die 20 or the male die 30 even if it is driven by a sliding method that slides on any surface of the female die 20 or the male die 30. It may be driven.

  INDUSTRIAL APPLICABILITY The present invention can be used in industries that manufacture or use a resin molded body with a film.

It is a perspective view of the resin molding with a film concerning a 1st embodiment. It is sectional drawing at the time of cut | disconnecting the resin molding with a film shown in FIG. 1 by the AA line shown in FIG. It is an enlarged view of B part of the film shown in FIG. It is a schematic block diagram of the injection mold concerning a 1st embodiment. It is a flowchart which shows the flow of each process of the manufacturing method of the resin molding with a film which concerns on 1st Embodiment. It is a figure which shows each process of the manufacturing method of the resin-molded body with a film which concerns on 1st Embodiment in steps. FIG. 7 is a diagram showing step by step each process of the method for manufacturing a resin molded body with a film according to the first embodiment, following FIG. 6. It is a figure which shows the change in each step after shaping | molding of the metal mold | die for injection molding used for manufacture of the resin molding with a film which concerns on 2nd Embodiment. It is a perspective view of the resin-molded body with a film which concerns on 3rd Embodiment. It is sectional drawing at the time of cut | disconnecting the resin molding with a film shown in FIG. 9 by the AA line shown in FIG. It is a figure which shows the change in each step after shaping | molding of the metal mold | die for injection molding used for manufacture of the resin molding with a film concerning 3rd Embodiment. It is sectional drawing at the time of cut | disconnecting the resin molded object with a film which concerns on other embodiment with the same line as the AA line shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Resin-molded body with film 2 Film 3 Base sheet 4 Design layer 5 Adhesive layer 6 Resin molded body 7 Top surface layer 8 Side surface layer 9 Opening peripheral end surface 10 Opening peripheral end surface 11 Peripheral layer (end part)
12 Inner wall layer (edge)
15 Mold for Injection Molding 16 Resin Molded Body with Film 17 Angular Pin 19 Resin Molded Body with Film 20 Female Mold (One Mold)
20a Concave part 21 Concave part 25 Bending mechanism part (narrow opening member)
25a hole 26 columnar part 27 connecting part 28 movable shaft 29 connecting part 30 male mold (other mold)
31 convex portion 32 space 35 molten resin injection port 40 space

Claims (4)

A resin molded body with a film in which a film is attached to a part of the surface of the resin molded body,
The resin molded body has a recess inward,
The film covers the side surface from the top surface opposite to the concave portion, and reaches at least the opening peripheral end surface of the concave portion,
The resin molded body with a film, wherein the end portion of the film is present from the side surface to the opening peripheral end surface of the concave portion or the inner wall surface of the concave portion. Resin molding with a film for producing a resin molded body with a film in which a film is attached to a part of the surface of a resin molded body using an injection molding mold for performing injection molding by arranging at least two molds to face each other A method for manufacturing a body,
Among the injection molds, a film placement step of placing the film by bending a part or all of the end of the film inward in the recess of one mold having a recess,
After the placement of the film, among the injection molds, a mold placement step of placing the other mold facing the recess,
A molten resin supplying step of supplying a molten resin to a space formed from the other mold and the film;
A molded body removing step of taking out the resin molded body with film after curing of the molten resin;
A method for producing a resin-molded body with a film, comprising:   The said film arrangement | positioning process includes the bending process of bending a part or all of the edge part of the said film inside, The manufacturing method of the resin molding with a film of Claim 2 characterized by the above-mentioned. An injection mold for performing injection molding with at least two molds facing each other,
One mold having a recess;
A member for narrowing the opening surface of the recess, and a narrow member disposed on a part or all of the opening end surface of the one mold during injection molding;
At the time of injection molding, the other mold placed opposite to the one mold and the narrow mouth member,
An injection mold characterized by comprising:

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