JP4815511B2 - Manufacturing method of veneer insert film - Google Patents

Description

  The present invention is used for decoration on the surface of molded products such as automobile interior parts, home appliance decoration parts, display panels, operation panels, amusement machine operation parts and cases, communication equipment operation parts and cases, In particular, the present invention relates to a method for producing a veneer insert film and a method for producing a veneer insert insert product in which the veneer is not displaced or buried during insert molding, and suction marks are not left on the surface of the veneer.

  Conventionally, a veneer insert molded product obtained by insert molding using a veneer (also referred to as a veneer) is used for interior decoration of automobiles. The process of producing such a veneer insert molded product is disclosed in Patent Document 1, for example. First, a main wood veneer 92 having a thickness of about 200 to 500 μm is prepared. Next, the nonwoven fabric is impregnated with a vinyl acetate adhesive 93, and then this is hot-pressed against the protruding plate 92.

  Next, as shown in FIG. 12A, a decorative sheet 90 is obtained by bonding a reinforcing plate 94 made of polycarbonate or a veneer plate to the back surface of the protruding plate 92 via the adhesive 93. Next, the decorative sheet 90 is inserted into an injection mold, and a molding resin 99 is insert-molded on the back side thereof to obtain a veneer insert molded product 97 in which the decorative sheet 90 is incorporated on the surface of the resin base 99 ( (Refer FIG.12 (b)).

JP-A-11-000983

  However, the insert molding using the protruding plate described in Patent Document 1 has the following problems.

  First, in the case of a veneer insert molded product in which the veneer is incorporated only on a part of the resin base material surface (see FIG. 13), the decorative sheet is injected into a predetermined portion of the cavity forming surface of the injection mold. The mold resin is filled in the cavity while being held by vacuum suction from the mold. However, no matter how much the decorative sheet is held by vacuum suction, if the flow of the molding resin hits the end surface of the decorative sheet (that is, the end surface of the protruding plate and the reinforcing plate laminated with the same dimensions), the impact Thus, the entire decorative sheet may move and cause a positional shift. In particular, the more complicated the outer shape pattern of the protruding plate, the more chances of hitting the end face of the decorative sheet increase, and the easier it is to cause positional deviation.

  Further, the flow of the molding resin may enter between the cavity forming surface and the protruding plate, and the resulting protruding plate insert molded product is partially embedded in the molding resin, and the surface of the protruding plate is incomplete. There was also the problem that it was only exposed and visible. In particular, the more complicated the outer shape pattern of the protruding plate, the more complicated the flow of the molding resin and the easier it is to enter between the cavity forming surface and the protruding plate.

  Further, since the decorative sheet is held by evacuating from the vacuum suction hole provided on the cavity forming surface, the mark of the vacuum suction hole remains on the surface of the protruding plate that is in close contact with the vacuum suction hole. was there. In particular, the more complicated the outer shape pattern of the protruding plate, the more difficult it is to select the location for forming the vacuum suction hole, and the vacuum suction force for holding must be increased accordingly, and the traces are likely to remain. .

  Therefore, the technical problem to be solved by the present invention is to solve the above-mentioned problem, and the protruding plate insert film is not displaced or buried at the time of insert molding, and the suction mark remains on the protruding plate surface. It is providing the manufacturing method and the manufacturing method of a veneer insert molded product.

  In order to solve the above technical problem, the present invention provides a method for producing a veneer insert film having the following configuration and a method for producing a veneer insert molded product.

According to the first aspect of the present invention, a veneer region constituted by a pattern in which a veneer cut into a predetermined outer shape pattern is attached to one surface of a base film with a pressure-sensitive adhesive layer and appears on the surface of the veneer And a method for obtaining a veneer insert film having other non-grain regions,
Temporarily fixing the veneer on one side of the base film,
Using a double-sided adhesive film provided with a pressure-sensitive adhesive layer on one side of the separator, and sticking the pressure-sensitive adhesive layer to the surface on which the protruding plate of the base film is temporarily fixed;
After the laminated body is positioned and arranged in a half-cut mold, a half-cut process is performed in which only the protruding plate, the pressure-sensitive adhesive layer, and the separator in the laminated body are cut into a predetermined external pattern by the half-cut mold. The process of performing,
Cover the pressure-sensitive adhesive layer on the portion that needs to be transferred while leaving the protruding plate, the pressure-sensitive adhesive layer, and the separator in the half-cut laminated body without removing them. After peeling the separator, the step of sticking it with the pressure-sensitive adhesive layer exposed on one side of the base film,
The pedestal film is provided with a step of peeling from the protruding plate attached to the base film together with the protruding plate, the pressure-sensitive adhesive layer, and the separator that do not require transfer, A method for producing a veneer insert film is provided.

  According to the second aspect of the present invention, a step of temporarily fixing a protruding plate on one side of the pedestal film, and a double-sided adhesive film provided with a pressure-sensitive adhesive layer on one side of the separator are used. Provided is a method for producing a film for a veneer insert according to a first aspect, in which the order of the steps is changed for the step of adhering the veneer to the surface temporarily fixed with the pressure-sensitive adhesive layer.

  According to the 3rd aspect of this invention, the said base film is decorated, The manufacturing method of the film for veneer | blade inserts of either the 1st aspect or the 2nd aspect is provided. .

  According to the fourth aspect of the present invention, after peeling the pedestal film and unnecessary portions, the base film and the protruding plate are continuously covered with a transparent resin film so as to sandwich the protruding plate therebetween. The manufacturing method of the film for protruding plate inserts in any one of the 1st-3rd aspect characterized by including the process to perform.

  According to the first aspect of the present invention, a veneer cut into a predetermined outer shape pattern on one side of the base film by this manufacturing method is adhered with a pressure-sensitive adhesive layer, and is constituted by a pattern appearing on the surface of the veneer Since a veneer insert film having a grain area and other non-grain areas can be obtained, it is arranged in an injection mold so that the surface opposite to the base film is along the cavity forming surface. Even if the molding resin is filled in the cavity, the position of the protruding plate does not move. This is because the flow of the molding resin does not collide with the end face of the protruding plate but flows along the substrate film by covering the protruding plate and the periphery thereof with the substrate film in the cavity. is there.

  Further, by covering the protruding plate and the periphery thereof in the cavity with the base film, the flow of the molding resin is obtained without entering between the cavity forming surface of the injection mold and the protruding plate. In the veneer insert molded product, the surface of the veneer appears to be completely exposed from the molding resin (see FIG. 3). In addition, if what was decorated as the said base film is used, it can decorate also in the said non-grain area | region.

  Further, according to the first aspect of the present invention, the base plate and the pressure-sensitive adhesive layer are half-cut into a predetermined outer shape pattern on the pedestal film, and the base plate cut into the outer shape pattern is not touched directly. Since a veneer insert film is obtained by transferring to a material film, even a veneer cut into a complicated outer shape pattern can be easily attached to the base film. Regardless of the manufacturing method, when the veneer is stuck to the base film as it is, after forming the pressure-sensitive adhesive layer on one side of the veneer, the base material is held while holding the end face so as not to touch the adhesive surface. It will move to the top of the film. However, since it is difficult to grip a thin veneer with a complicated outer shape pattern, the pressure on the end face can not be controlled and the direction of the pressure cannot be controlled, and the veneer can be destroyed or stuck off the planned location. I will. According to the manufacturing method of the first aspect, such a problem does not occur.

  Furthermore, according to the first aspect of the present invention, after the half-cut processing, until the transfer is completed, the protruding plate, the pressure-sensitive adhesive layer 3 and the separator 19 in the portion where the transfer is not required from the laminate. Is left unremoved, so even if there is a small piece in the veneer design, something will come into contact with the side of the small piece during the work, etc. Will not slip off. In addition, when transferring to the base film, there is a difference in the thickness and strength of the lamination between the part with and without the protruding plate, so the transfer roller pressure is not evenly applied, and the base film is wrinkled. A beautiful finish.

  In the first aspect, after the base film is peeled off, the base film and the protruding plate may be continuously covered with a transparent resin film so as to sandwich the protruding plate therebetween. In this case, as described above, in addition to surface protection, the protrusion plate can be prevented from being pushed forward by molding shrinkage after insert molding.

  According to the fifth aspect of the present invention, since the insert molding is performed using the film for the veneer insert, as described above, it is possible to obtain the front veneer insert insert product in which the veneer is not displaced or buried. .

  Further, in the fifth aspect, if the projecting plate insert film is fixed outside the cavity, the projecting plate in the cavity can be easily fixed, so a vacuum is applied to a portion of the cavity forming surface that contacts the projecting plate. It is also possible to leave no suction hole. That is, it is possible to prevent the vacuum suction holes from being left not only in the wood grain region but also in the non-wood grain region.

It is sectional drawing which shows one Example of the film for protruding plate inserts obtained with the manufacturing method concerning this invention. It is a perspective view which shows one Example of the veneer insert molded product obtained with the manufacturing method concerning this invention. It is the figure which cut | disconnected the veneer insert molded product concerning this invention. It is sectional drawing which shows another Example of the film for protruding plate inserts obtained with the manufacturing method concerning this invention. It is sectional drawing which shows one Example of the manufacturing process of the film for protruding plate inserts concerning this invention. It is a figure for demonstrating the reason for the process of FIG.5 (E) being good. It is a figure for demonstrating the reason for the process of FIG.5 (F) being good. It is sectional drawing which shows another Example of the manufacturing process of the film for protrusion board inserts concerning this invention. It is sectional drawing which shows another Example of the manufacturing process of the film for protrusion board inserts concerning this invention. It is sectional drawing which shows one Example of the manufacturing process of the veneer-plate insert molded article using the film for veneer-plate inserts obtained with the manufacturing method concerning this invention. It is sectional drawing which shows another Example of the manufacturing process of the veneer board insert molded article using the film for veneer board inserts obtained with the manufacturing method concerning this invention. It is sectional drawing which shows the manufacturing process of the veneer insert molded product formed by insert-molding the veneer concerning a prior art. It is sectional drawing which shows an insert molded product with the veneer concerning a prior art. It is sectional drawing which shows another Example of the manufacturing process of the film for protrusion board inserts concerning this invention.

  Hereinafter, a manufacturing method of a veneer insert film according to an embodiment of the present invention and a manufacturing method of a veneer insert molded product using the veneer insert film obtained by the manufacturing method will be described with reference to the drawings.

  FIG. 1 is a sectional view showing an example of a veneer insert film obtained by the production method according to the present invention. The veneer insert film 1 shown in FIG. 1 includes a veneer 4 cut into a predetermined outer shape pattern on one surface of a base film 2 and attached to the pressure-sensitive adhesive layer 3 so as to appear on the surface of the veneer 4. And a non-grain area 1b. The protruding plate 4 is a single plate obtained by thinly cutting wood, and is generally used as a surface decorative material because it is an interior material or furniture. In the present invention, the thickness of the protruding plate 4 is 150 μm to 500 μm. If the thickness is less than 150 μm, it is transparent, and if the thickness exceeds 500 μm, it is difficult to provide along the curved surface. More preferably, it is 150 μm to 300 μm. The veneer 4 includes walnut, cherry, maple, coral, coral, paulownia, coral, cedar, zelkova, kaptan, sapele, china, spruce, karin, zebra, sen, tamo, teak, oak, elm Trees such as white oak and mahogany may be used. The patterns appearing on the surface of the protruding plate 4 include a grid, a plate, and a grid. Further, a protective layer may be provided in advance on the side of the protruding plate 4 that is the surface of the protruding plate insert molded product. The protective layer can be formed, for example, by applying a hard coat ink or by bonding a resin film such as PMMA.

  In the present invention, the protruding plate 4 is cut into a predetermined outer shape pattern and partially exists on one side of the base film 2. The outer shape pattern can be a complicated shape as shown in FIG. 2, for example, and a veneer insert molded product excellent in decorativeness can be obtained.

  Examples of the material of the base film 2 include acrylic resin, polyester resin, polypropylene resin, vinyl chloride resin, polyethylene resin, polyethylene terephthalate resin, polycarbonate resin, nylon resin, vinylon resin, acetate resin, polyethylene resin. Resins such as polyamide-based resins, polyacrylic resins, and polyvinyl chloride-based resins can be used. Particularly preferred is an acrylic resin. As the film thickness of the base film 2, a film having a thickness of 75 μm to 200 μm can be used. If the resin used for injection molding and the base film are in close contact with each other by melting by heat, the process of applying the adhesive ink to the back surface becomes unnecessary.

  Moreover, if what was decorated as the said base film 2, it can also decorate also in the said non-grain area | region 1b. For example, monochromatic printing may be provided on the entire surface of the base film 2 or a coloring material may be included in the base film 2. Moreover, you may provide fine uneven | corrugated patterns, such as matting and a hairline, on the surface of the said base film 2. FIG. Furthermore, these may be combined.

  As the pressure-sensitive adhesive layer 3, an acrylic pressure-sensitive adhesive (PSA) or the like can be used. For example, “Highly transparent adhesive transfer tape: 8142” (both side separators are PET) manufactured by 3M, etc. are used. In addition, since the pressure-sensitive adhesive layer 3 is disposed under the protruding plate 4, there is no problem even if the transmittance is low.

  Next, the manufacturing method of the film for veneer | blade inserts which concerns on this invention is demonstrated.

  That is, for example, as shown in FIG. 5, a double-sided adhesive film in which the protruding plate 4 is temporarily fixed on one side of the pedestal film 17 and separators 18 and 19 are provided on both sides of the pressure-sensitive adhesive layer 3 is used. After peeling, this is stuck on the surface of the pedestal film 17 on which the protruding plate 4 is temporarily fixed with the pressure-sensitive adhesive layer 3 (FIGS. 5A, 5B, and 5C). Next, after positioning and arranging the laminated body on the half-cut mold 20, only the protrusion plate 4, the pressure-sensitive adhesive layer 3, and the separator 19 in the laminated body with the half-cut mold 20 have a predetermined outer shape pattern. A half-cut process is performed to cut into [Fig. 5 (D)]. In FIG. 5, a double-sided adhesive film in which separators 18 and 19 are provided on both sides of the pressure-sensitive adhesive layer 3 is used, and one separator 18 is peeled off and pasted. A double-sided adhesive film in which the pressure-sensitive adhesive layer 3 is simply provided on one side of the separator 19 from the beginning, such as an adhesive transfer tape: F9460, may be used.

  The pressure sensitive adhesive for the portion that needs to be transferred while leaving the protruding plate 4, the pressure sensitive adhesive layer 3, and the separator 19 in the portion that does not need to be transferred from the laminate that has been half cut. After the separator 19 covering the layer 3 was peeled off, it was stuck on the pressure-sensitive adhesive layer 3 exposed on one side of the base film 2 [FIGS. 5E, 5F, 5G] Finally, the pedestal film 17 is peeled off from the projecting plate 4 adhered to the base film 2 together with the projecting plate 4, the pressure-sensitive adhesive layer, and the separator 19 where transfer is unnecessary. A veneer insert film 1 is obtained. If the separator 19 is not transparent PET but paper (one side is a release treatment), it is easy to check whether the separator 19 in a portion that does not require transfer can be peeled off together with the base film 17 without leakage.

  By the way, although it is possible to adopt a process different from the process shown in FIGS. 5E and 5F immediately after the half-cut process, it is more preferable to adopt the process described in the previous paragraph. This is because, as shown in FIG. 6 (A), it is possible to remove unnecessary portions of the protruding plate 4, the pressure-sensitive adhesive layer 3, and the separator 19 from the laminate that has been half-cut, but the protruding plate design If there is a small piece in the inside, there is a possibility that something will come in contact with the side of the small piece during the work, and it may be peeled off or displaced. . That point. As shown in FIG. 5E, the protruding plate 4, the pressure-sensitive adhesive layer 3, and the separator 19 that do not need to be transferred from the half-cut laminated body may be left without being removed. It is possible to prevent something from coming in from the side of the small piece portion.

  Further, immediately after the half-cut process, unnecessary portions of the protruding plate 4, the pressure-sensitive adhesive layer 3 and the separator 19 are removed from the half-cut laminate, and the pressure-sensitive adhesive layer 3 is further removed. It is possible to peel off the covering separator 19 [see FIG. 7 (A)] and attach it to one side of the base film 2 with the pressure-sensitive adhesive layer 3, but as in the previous paragraph More preferably. This is because, in order to attach the protruding plate 4 to the base film 2, it is necessary to apply pressure through rollers (not shown) in the state shown in FIG. 7B. Since there is a large difference in the thickness and strength of the laminate between the part with and without 4 (the protruding plate 4 becomes a support), the pressure on the transfer roller does not apply evenly and wrinkles occur in the base film 2 There is a risk. That point. As shown in FIG. 5 (F), transfer is performed while leaving the protruding plate 4, the pressure-sensitive adhesive layer 3, and the separator 19, which are not required to be transferred, from the laminate that has been half-cut, without being removed. If the separator 19 is peeled off only at necessary portions, the pressure of the transfer roller can be applied evenly and a beautiful finish without wrinkles can be obtained.

  The pedestal film 17 can be a dicing tape or the like that is used when a workpiece is fixed in a dicing process in manufacturing a semiconductor, an optical component, or an electronic component. For example, “SL216F” (manufactured by Sanei Kaken Co., Ltd., made of polyethylene, adhesive material is acrylic, film thickness 0.016 mm), “R410” manufactured by Nitto Denko, etc. Further, as the half-cut mold 20, a Thomson mold, a pinnacle mold, or the like can be used.

  The steps of FIGS. 5A and 5B are performed in a different order, using a double-sided adhesive film in which separators are provided on both sides of the pressure-sensitive adhesive layer. Adhering to the one surface with the pressure-sensitive adhesive layer [see FIG. 14A], and then temporarily fixing the pedestal film to the other surface of the protruding plate [see FIG. 14B] Good.

  Further, after obtaining the veneer insert film by the manufacturing method shown in FIG. 5, the base film 2 and the veneer 4 are continuously covered with the transparent resin film 5 so as to sandwich the veneer 4 therebetween. (See FIG. 4). Examples of the transparent resin film 5 include acrylic resins, polyester resins, polypropylene resins, vinyl chloride resins, polyethylene resins, polyethylene terephthalate resins, polycarbonate resins, nylon resins, vinylon resins, acetate resins, polyethylene resins, polyamides. Resins such as resin, polyacrylic resin, and polyvinyl chloride resin can be used. Examples of the method for coating the transparent resin film 5 include a laminating method using an adhesive such as dry laminating and hot melt laminating, and an extrusion laminating method.

  Further, as shown in FIG. 8, the method includes a step of opening a positioning hole 22 that penetrates a laminate including the base film 17, the protruding plate 4, the pressure-sensitive adhesive layer 3, and the separator 19, and the positioning hole 22 is used. The positioning to the half-cut mold 20 can also be performed.

  Further, before the pedestal film 17 is peeled off, it is aligned with the positioning hole 22 or after the pedestal film 17 is peeled off. Positioning holes 23 for positioning to 14 may be provided (see FIG. 9).

  Finally, a method for producing a veneer insert molded product using the above veneer insert film according to the present invention will be described.

  That is, for example, as shown in the schematic cross-sectional process diagram of FIG. 8, the veneer insert film 1 obtained as described above is heated to an appropriate temperature, and the base film 2 of the veneer insert film 1 is turned inside. Then, it is pressed against the preforming mold 12 and preformed into a shape corresponding to the outer shape and dimensions of the veneer insert molded product 11 [FIGS. 10A and 10B]. Next, after the molded film 1 for the veneer insert is removed from the mold, it is set on the punching molds 13 and 14 and is not necessary due to the cut irregularities 13a and 14a provided on the molds 13 and 14. The part 15 is excised [FIGS. 10 (C), (D), (E)]. 10A and 10B, the convex preforming mold 12 is used. However, the concave preforming mold 12 is formed with the base film 2 of the protruding plate insert film 1 facing outside. It may be pressed against. In this case, since the state where the protruding plate 4 is pushed into the base film 2 can be made in advance, the finish of the boundary portion of the protruding plate 4 becomes clean.

  The protruding plate insert film 1 with the unnecessary portions cut off is then inserted into an injection mold having a split mold structure consisting of a cavity mold 7 and a core mold 8, and the substrate is formed on the cavity forming surface of the cavity mold 7. Set so that the surface opposite to the film 2 is along, hold the film 1 for the veneer insert by vacuum suction in a vacuum suction hole 7a provided on the cavity forming surface so as to face the base film 2, After the mold is closed, injection molding is performed by injecting a molding resin 9 into the cavity 16 from the gate 8a provided in the core mold 8 [FIGS. 10F and 10G]. Thereafter, the molded resin 9 is cooled and solidified, and then demolded to obtain an insert molded product 11 in which the protruding plate insert film 1 is joined and integrated on the surface of the resin molded product 10 [FIG. 10 (H)].

  Further, for example, as shown in the schematic cross-sectional process explanatory diagram of FIG. 11, the protruding plate insert film 1 is heated to an appropriate temperature, and the base film 2 of the protruding plate insert film 1 is set inside, so that the preforming mold 12 is formed. To the shape corresponding to the outer shape and dimensions of the protruding plate insert molded product 11 [FIGS. 11A and 11B]. Next, after the mold 1 for the veneer insert inserted after being cooled and solidified is removed [FIG. 11 (C)], the surface opposite to the base film 2 is formed on the cavity forming surface of the cavity mold 7. It is set so as to be fixed along the outside of the cavity 16 and injection molding is performed by injecting the molding resin 9 into the cavity 16 from the gate 8a provided in the core mold 8 [FIGS. 11D and 11E. ]. Thereafter, the molded resin 9 was cooled and solidified, and then removed from the mold to obtain a veneer insert molded product 11 in which the veneer insert film 1 was joined and integrated on the surface of the resin molded product 10 [FIG. 11 (F)].

  Next, this was set in the punching die 13 and the unnecessary portion 15 was excised with a cutting blade 13a provided in the die 13 [FIGS. 11 (G), (H), (I)]. If the vacuum suction hole 7 a is provided outside the cavity 16, it can be removed even if a suction mark remains on the base film 2 of the film 1 for the veneer insert.

  Examples of the molding resin 9 include general-purpose resins such as polystyrene resin, polyolefin resin, ABS resin, AS resin, and AN resin. Also, general engineering resins such as polyphenylene oxide / polystyrene resins, polycarbonate resins, polyacetal resins, acrylic resins, polycarbonate-modified polyphenylene ether resins, polybutylene terephthalate resins, polybutylene terephthalate resins, ultrahigh molecular weight polyethylene resins, polysulfone Super engineering resins such as resins, polyphenylene sulfide resins, polyphenylene oxide resins, polyarylate resins, polyetherimide resins, polyimide resins, liquid crystal polyester resins, and polyallyl heat-resistant resins can also be used. Furthermore, composite resins to which reinforcing materials such as glass fibers and inorganic fillers are added can also be used. Further, the molding resin 9 may be colored.

  As a method for cutting off the flange-shaped unnecessary portion 15 of the projecting plate insert film 1, in addition to a punching method using a Thomson die or a pinnacle die, a press method using a die, a sand blast method, or the like can be employed. In particular, when the base film 2 of the projecting plate insert film 1 is made of an acrylic resin, the unnecessary portion 15 is more fragile than a PET film or the like, and therefore can be easily excised by a sandblast method or the like.

  Further, in the example shown in FIG. 11, the protruding plate insert film 1 is preformed in advance outside the molds 7 and 8 for injection molding, but the preforming is performed in the molds 7 and 8 for injection molding. May be.

  Further, when the projecting plate is exposed without being covered with the transparent resin film, the projecting plate insert film 1 is molded in the injection molding dies 7 and 8 before being inserted or in another preforming mold 12. If the moisture in the protruding plate 4 is reduced by drying before the mold is contaminated. It is presumed that the moisture contained in the veneer plate 4 caused mold contamination. Drying methods include room temperature drying and heat drying. Moreover, when the obtained veneer insert molded product 11 is exposing the said veneer without being covered with the said transparent resin film, you may coat for the surface protection of the insert molded product 11 after insert molding.

[Example 1]
A commercially available dicing tape was used as the pedestal film, and a walnut projecting plate having a length of 300 mm, a width of 400 mm, and a thickness of 0.3 mm was temporarily fixed to the temporary fixing surface. Next, using “3M company highly transparent adhesive transfer tape: 8142”, one of the separators (PET) was peeled off, and then the acrylic pressure-sensitive surface was attached to the surface of the pedestal film on which the protruding plate was temporarily fixed. Adhere with an adhesive layer. Next, after positioning and arranging the laminate in a half-cut mold (pinnacle mold), only the protruding plate, the pressure-sensitive adhesive layer, and the remaining separator (PET) in the laminate are illustrated in the half-cut mold. The half cut process which cut | disconnects to a complicated external shape pattern as shown in 2 was performed.

  Cover the pressure-sensitive adhesive layer on the portion that needs to be transferred while leaving the protruding plate, the pressure-sensitive adhesive layer, and the separator in the half-cut laminated body without removing them. After the separator was peeled off, it was stuck on the pressure-sensitive adhesive layer exposed on one side of a base film made of PMMA having a length of 350 mm, a width of 450 mm, and a thickness of 0.125 mm. Finally, the pedestal film is peeled off from the protruding plate attached to the base film together with the protruding plate, the pressure-sensitive adhesive layer, and the separator in a portion that does not require transfer to obtain the protruding plate insert film. It was.

  The veneer insert film was heated to an appropriate temperature, pressed against the preforming mold with the base film of the veneer insert film inside, and formed into a shape corresponding to the outer shape and dimensions of the veneer insert molded product. Next, after cooling and solidifying, the molded film for the veneer insert is removed from the mold, and then fixed to the cavity forming surface of the cavity mold so that the surface opposite to the base film is along the outside of the cavity. The resin was set in an injection mold, and injection molding was performed by injecting PC / ABS resin into the cavity as a molding resin from a gate provided in the core mold. Thereafter, the molded resin was cooled and solidified, and then removed from the mold to obtain a veneer insert molded product in which the film for the veneer insert was joined and integrated on the surface of the top-plate-shaped resin molded product of the notebook PC. After removing the veneer insert molded product from the injection mold, unnecessary portions were cut out by sandblasting.

[Example 2]
About the projecting plate insert film, except that the base film and the projecting plate are continuously covered with a transparent resin film made of PMMA having a thickness of 0.075 mm so as to sandwich the projecting plate therebetween by a dry laminating method. Was the same as in Example 1.

  Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

  The present invention is used for decoration on the surface of molded products such as automobile interior parts, home appliance decoration parts, display panels, operation panels, amusement device operation parts and cases, communication equipment operation parts and cases, etc. Can be industrially useful.

DESCRIPTION OF SYMBOLS 1 Veneer insert film 1a Wood grain area | region 1b Non-grain area | region 2 Base film 3 Pressure sensitive adhesive layer 4 Veneer board 5 Transparent resin film 7 Cavity type 7a Vacuum suction hole 8 Core type 8a Gate part 9 Molded resin 10 Resin molded article 11 Veneer board Insert molding 12 Preliminary mold 13 Punching mold 14 Punching mold 15 Unnecessary part 16 Cavity 17 Base film 18 Separator 19 Separator 20 Half-cut mold 21 Unnecessary part 22 Positioning hole 23 Positioning hole 90 Cosmetic sheet 92 Veneer plate 93 Vinyl acetate adhesive 94 Reinforcement plate 97 Veneer insert molded product 99 Molded resin

Claims (4)

A veneer having a wood grain region and other non-wood grain regions constituted by a pattern appearing on the surface of the veneer, in which a veneer cut into a predetermined outer shape pattern is attached to one side of the base film with a pressure-sensitive adhesive layer A method for obtaining an insert film,
Temporarily fixing the veneer on one side of the base film,
Using a double-sided adhesive film provided with a pressure-sensitive adhesive layer on one side of the separator, and sticking the pressure-sensitive adhesive layer to the surface on which the protruding plate of the base film is temporarily fixed;
After the laminated body is positioned and arranged in a half-cut mold, a half-cut process is performed in which only the protruding plate, the pressure-sensitive adhesive layer, and the separator in the laminated body are cut into a predetermined external pattern by the half-cut mold. The process of performing,
Cover the pressure-sensitive adhesive layer on the portion that needs to be transferred while leaving the protruding plate, the pressure-sensitive adhesive layer, and the separator in the half-cut laminated body without removing them. After peeling the separator, the step of sticking it with the pressure-sensitive adhesive layer exposed on one side of the base film,
The pedestal film is provided with a step of peeling from the protruding plate attached to the base film together with the protruding plate, the pressure-sensitive adhesive layer, and the separator that do not require transfer, A method for producing a veneer insert film. Temporarily fixing the veneer on one side of the base film;
Using a double-sided adhesive film provided with a pressure-sensitive adhesive layer on one side of the separator, and sticking it to the surface of the base film on which the protruding plate is temporarily fixed with the pressure-sensitive adhesive layer, the order of the steps is as follows. The manufacturing method of the film for protruding plate inserts of Claim 1 replaced.   The method for producing a film for a veneer insert according to claim 1 or 2, wherein the base film is decorated.   Furthermore, after peeling off the pedestal film and unnecessary portions, the base film and the protruding plate are continuously covered with a transparent resin film so as to sandwich the protruding plate therebetween, The manufacturing method of the film for protruding plate inserts in any one of Claims 1-3 which do.

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