WO2019116813A1 - 加飾成形体及びその製造方法、並びに加飾成形体を用いた発光構造 - Google Patents
加飾成形体及びその製造方法、並びに加飾成形体を用いた発光構造 Download PDFInfo
- Publication number
- WO2019116813A1 WO2019116813A1 PCT/JP2018/042135 JP2018042135W WO2019116813A1 WO 2019116813 A1 WO2019116813 A1 WO 2019116813A1 JP 2018042135 W JP2018042135 W JP 2018042135W WO 2019116813 A1 WO2019116813 A1 WO 2019116813A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- molded body
- hole
- decorated
- resin
- molding
- Prior art date
Links
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
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- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/24322—Composite web or sheet
- Y10T428/24331—Composite web or sheet including nonapertured component
- Y10T428/24339—Keyed
Definitions
- the present invention relates to a decorated molded body in which a surface material containing a fiber material is integrated on the surface of a resin molded body.
- a decorated molded body in which a surface material containing a fiber material is integrated on the surface of a resin molded body.
- a decorative molded body is manufactured by insert molding (in-mold molding) in which a surface material which is a sheet containing a fiber material or a preform molded body obtained by shaping the same is disposed in a cavity of a mold and injection molded. Or, it is manufactured by hand-pasting a skin material which is a preform molded body on the surface of a resin molded body which has been molded in advance.
- Patent Document 1 describes an insert material having a suede-like or silver-plated feel in which a reinforcing sheet is attached to the back surface of an artificial leather, made into a three-dimensional shape by preliminary molding, and punched into a required shape to obtain an injection molding die
- a molded body obtained by integrating a resin molded body and integrating the insert material on the surface thereof by injecting the molten resin from the reinforcing sheet side of the insert material after being housed in the inner cavity.
- Patent Document 2 is a decorative component in which a skin material such as thermoplastic urethane or polyvinyl chloride is laminated on the surface of a base material. Disclosed is a decorative part having a through hole reaching the material. Further, in Patent Document 3 below, a surface material constituting a design surface of a vehicle interior product, a back surface material disposed on the back side of the surface material, and an adhesive layer bonding and fixing the surface material and the back surface material in the thickness direction And a skin of a vehicle interior having a hole opening on the design surface side.
- a skin material such as thermoplastic urethane or polyvinyl chloride
- JP, 2006-281592 A JP, 2017-206139, A Unexamined-Japanese-Patent No. 2017-210184
- the present invention is a decorative molded article using a skin material having a fiber material and having a through hole as a skin material of the decorative molded body, wherein the resin molded body can be visually recognized from the through hole, and the shape of the through hole also collapses It is an object of the present invention to provide a hard-to-modify decorative molded body, a light emitting structure using the same, and a method for producing the same.
- One aspect of the present invention comprises a resin molded body and a skin material containing a fiber material laminated on the surface of the resin molded body, the skin material having a through hole, and the surface of the resin molded body being present in the through hole It is a decorated molded body.
- a decorative molded body when the surface of the resin molded body exists in the through hole, the resin molded body is visually recognized from the through hole, and the through hole is supported by the resin molded body, It is also possible to obtain a decorative molded body excellent in aesthetic appearance, in which the shape of the through holes is not easily deformed.
- the ratio (Hr / d) of the height (Hr) of the surface of the resin molded body to the depth (d) of the through holes is preferably 0.3 to 1.
- a skin material contains the mesh-like area
- the surface material includes a mesh-like region having a large number of through holes
- the average circle-converted diameter of the through holes is in the range of 0.1 to 3 mm. It is preferable from the point which makes the surface of the resin molding easy to exist.
- a resin molding has light transmittance, it is preferable from the point which can permeate
- a skin material is artificial leather, it is preferable from the point which exhibits the outstanding texture.
- Another aspect of the present invention is a light emitting structure including the light source in which the resin molded body has light transparency in the above-described decorative molded body and is disposed on the resin molded body side of the decorative molded body. is there. According to such a light emitting structure, by transmitting light from the light source from the through hole of the skin material, it is possible to obtain a light emitting structure exhibiting a novel design in which light is emitted only from the through hole.
- the other one aspect of this invention has a through-hole, and the process of accommodating the skin material containing a fiber material in the cavity of the mold for injection molding, and injecting a molten resin to the mold for injection molding And a step of forming a decorative molded body in which the surface material is integrated with the surface of the injection molded body to be molded; and a molded molded body molded such that the surface of the resin molded body exists in the through hole.
- Manufacturing method According to such a manufacturing method, the surface of the resin molding can be present in the through hole.
- the skin material includes a mesh-like region having a large number of through holes, from the viewpoint of forming an appearance excellent in design.
- the surface material be shaped into a shape corresponding to the shape of the cavity and be accommodated in the cavity in order to facilitate alignment during injection molding.
- the resin molding is visually recognized from the through hole, and It is possible to provide a decorated molded body which is less likely to lose its shape, a light emitting structure using the same, and a method of manufacturing the same.
- FIG. 1 is a schematic diagram explaining the decoration molded body 10 of embodiment.
- FIG. 2 is an explanatory view for explaining a ratio (Hr / d) of the height (Hr) of the surface of the resin molded body to the depth (d) of the through hole.
- FIG. 3 is a schematic view illustrating a light emitting structure 20 using the decorated molded body 10 of the present embodiment.
- FIG. 4 is an explanatory view for explaining each process of heat press molding for molding a preform compact.
- FIG. 5 is a top view of a sheet 3 containing a fiber material, including a mesh-like area having a large number of through holes.
- FIG. 6 is an explanatory view for explaining a method of manufacturing a decorated formed body by using insert molding and using a preform formed body.
- FIG. 1 is a schematic view for explaining the decorated molded body 10 of the present embodiment, wherein (a) is a top view, (b) is a cross-sectional view taken along the line BB ′ of (a), and (c) is It is a sectional view which expanded a CC 'section of a).
- 1 is a skin material containing a fiber material
- 2 is a resin molding
- h is a through hole formed in the skin material 1.
- a skin material including a fiber material having a mesh-like region M formed by arranging a large number of circular through holes h when viewed from above. 1 is integrated with the surface of the resin molded body 2 as shown in FIG. 1 (b), and the resin molded body 2 is visually recognized from the through hole h.
- the mesh-like area M including the through holes h forms an appearance given a design.
- the surface of the resin molded body 2 intrudes into the through holes h.
- the mesh-like area means, for example, an area having a total porosity of 10% or more due to a large number of through holes in an area of 4 mm 2 or more, preferably 25 mm 2 or more.
- the resin molded body 2 In the decorative molded body 10, when the surface of the resin molded body 2 intrudes into the through holes h, the resin molded body 2 is visually recognized from the through holes h, and the resin molded body 2 in which the through holes h invaded. Since it is supported on the surface of the skin material 1, it is difficult to cause breakage, deformation of the through hole h, breakage, etc. of the skin material 1, and the shape of the through hole h becomes difficult to collapse. In addition, even if friction is applied in the vicinity of the through hole h, it is difficult for fray or pill to occur.
- the ratio of the height (Hr) of the surface of the resin molded body 2 to the depth (d) of the through hole h It is easy to visually recognize the resin molded body 2 from the through-hole h that (Hr / d) is 0.3 to 1, further 0.5 to 0.9, and the shape retention of the through-hole h When it is used as a light emitting structure, it is preferable from the point of being excellent in light transmittance.
- the ratio (Hr / d) of the height (Hr) of the surface of the resin molded body 2 which has penetrated to the depth (d) of the through hole h is determined by cutting the molded body in the cross-sectional direction, an optical microscope or The depth of the through hole h and the height of the surface of the molded body intruding into the through hole h can be respectively measured and calculated by the microscope.
- the size of the through hole it is excellent in design that the average of circle conversion diameter is 0.1 to 3 mm, and further 0.3 to 2 mm, and the surface of the resin molding is molded in the through hole. It is preferable from the point which it is easy to make it invade.
- a circle conversion diameter means the diameter when it converts into the diameter of the circle of the same area. If the circle-converted diameter of the through hole is too small, the surface of the resin molded body tends to be less likely to intrude into the through hole during molding when integrating the skin material with the resin molded body.
- the pitch between the centers of adjacent through holes is 0.05 to 2.0 mm, and further 0.2 to 2.0 mm.
- the area of the mesh-like region is preferably 10% or more, and more preferably 50% or more of the area of the molded product, from the viewpoint of excellent designability and remarkable effects of the present invention.
- the length of the portion separating the adjacent through holes of the skin material is 0.1 to 1.5 mm, and further 0.2 to 1.0 mm, which is excellent in design. It is preferable from the point of being hard to tear at the time of molding.
- each dimension is a dimension in the skin material integrated to the decoration molding. Since the skin material is slightly stretched after molding, the dimensions before molding tend to be slightly smaller than the above-mentioned dimensions.
- the skin material examples include sheets of fibrous materials such as non-woven fabrics, woven fabrics and knits, and leather-like sheets such as artificial leather and synthetic leather in which a high molecular weight elastic material such as urethane is added to the fibrous materials.
- the thickness of the skin material is not particularly limited, but is preferably 0.1 to 2 mm, and more preferably 0.2 to 1 mm.
- the resin molded body include, for example, ABS resins, acrylic resins such as PMMA resins, polystyrene resins, polycarbonate resins, polyolefin resins such as polypropylene, polyethylene terephthalate (PET) and polybutylene terephthalate.
- polyester resins such as (PBT), various polyamide resins, and COP resins.
- these may be compound products in which a filler or the like is blended, or mixed products in which a plurality of resins are alloyed or blended. These are suitably selected according to a use.
- molded articles of light-transmitting resins having light-transmitting properties such as ABS-based resins, acrylic resins such as PMMA resins, polystyrene-based resins, polycarbonate-based resins, polyester-based resins, and COP resins, It is preferable from the point which can be used as a light emission structure which harnessed the light transmittance of the resin molding which is demonstrated below.
- FIG. 3 is a schematic view for explaining a light emitting structure 20 using the decorated molded body 10 of the present embodiment, where (a) is a cross-sectional view corresponding to FIG. 1 (b) and (b) is FIG. It is sectional drawing corresponding to c).
- the resin molded body 2 forming the decorated molded body 10 has light transparency.
- the light source 12 mounted on the substrate 11 is disposed on the resin molded body 2 side of the decorative molded body 10.
- the light source 12 is formed by mounting a plurality of light emitting elements such as LEDs on the substrate 11.
- the visible light transmittance is preferably 50% or more, more preferably 70% or more, and particularly preferably 85% or more.
- a molded preform obtained by preforming a skin material containing a fiber material into a shape matched to the cavity of a mold used for injection molding is manufactured.
- a manufacturing method by insert molding in which a preform molded body is accommodated in the cavity of and injection molding is described with reference to the drawings.
- FIG. 4 is an explanatory view for explaining each step of heat press molding for forming a preform-formed body to be a skin material containing a fiber material.
- 3 is a sheet containing a fiber material, including a mesh-like area having a large number of through holes
- 21 is a male mold for heating press
- 22 is a female mold for heating press
- 21a is a male mold A core 21 and a cavity 22 a of the female die 22 are shown.
- 4 is a preform molded body before trimming processing
- 5 is a preform molded body
- 6 is an unnecessary portion of the trimmed sheet 3.
- FIG. 5 is a top view of the sheet
- the sheet 3 containing a fiber material includes a mesh-like region M having a large number of through holes h.
- another mesh-like area is shown in which an icon S meaning reproduction, pause, fast-forwarding of the acoustic device is shown.
- a sign display can also be formed by combining the through holes h as in the icon S.
- the method of forming such a through hole is not particularly limited, for example, it is possible to form the through hole at an accurate position by performing drilling using a drill by a multi-axis drilling machine by NC control. It is preferable from
- the sheet 3 is placed between the female mold 22 and the male mold 21.
- the female mold 22 and the male mold 21 are heated to a predetermined temperature that softens the sheet 3.
- the female mold 22 and the male mold 21 are clamped at a predetermined pressure.
- the sheet 3 is sandwiched and shaped between the core 21 a of the male die 21 and the cavity 22 a of the female die 22.
- the female mold 22 and the male mold 21 are opened and cooled to obtain the preform molding 4 before the trimming process.
- the preform molded body 4 before the trimming process is taken out from the female mold 22 and the male mold 21 and the unnecessary portion 6 of the sheet 3 is trimmed to obtain the preform molded body 5.
- the preform molded body thus obtained is integrated with the surface of the resin molded body to be a decorated molded body.
- insert molding in which the preform molding is integrated with a resin molding molded by injection molding is preferably used.
- FIG. 6 the method of manufacturing the decorating molded object 10 obtained by integrating with the resin molded object 2 which is injection molded using the preform molded object 5 as the skin material 1 by insert molding is demonstrated.
- a method of performing insert molding using the preform molded body 5 as the skin material 1 will be described, but instead of the preform molded body 5, the sheet 3 may be subjected to insert molding as it is .
- the preform molded body 5 is used, the position alignment at the time of integrating with the resin molded body 2 becomes correct.
- FIG. 6, 5 is a preform molding which has a through hole not shown and which is a skin material 1 including a fiber material
- 32a is a movable side mold
- 32b is a stationary side mold
- 33 is an injection part main body of an injection molding machine
- 33a is a cylinder
- 33b is an in-line screw
- 34 is a gate
- 2 is a resin molded body
- 2a is a molten resin
- 10 is a decorative molded body.
- the movable mold 32a and the fixed mold 32b form a pair to form an injection mold 32 for forming a cavity c.
- the movable mold 32a is a female mold of an injection mold
- the fixed mold 32b is a male mold of an injection mold.
- the preform molding 5 is accommodated as the skin material 1 in the recess for forming the cavity of the movable mold 32a.
- the movable mold 32a and the fixed mold 32b are clamped.
- the molten resin 2a is filled in the cavity c formed in a state in which the movable side mold 32a and the fixed side mold 32b are clamped.
- the injection portion 33 of the injection molding machine is advanced, the nozzle 33a is brought into contact with the gate 34 formed on the fixed mold 32b, and the molten resin 2a is injected by the in-line screw 33c in the cylinder 33b.
- the resin 2a is completely filled in the cavity c at a predetermined filling pressure.
- Injection molding conditions are conditions that can be completely filled according to the thermal characteristics and melt viscosity of the resin to be injected, the shape of the molded body, and the resin thickness (resin temperature, mold temperature, injection pressure, injection speed, retention after injection) Pressure, cooling time) are set appropriately.
- the ratio (Hr / d) of the surface height (Hr) to the through hole depth (d) can be adjusted by adjusting the molding conditions.
- the thickness of the injection-molded article to be formed is not particularly limited, and may be appropriately selected depending on the use and the formability. For example, in the case of using for a housing of a home appliance, 0.3 to 3 mm, and further 0.5 to 2 mm are selected as a preferable range.
- the resin molded body 2 molded in the cavity c formed in a state in which the movable side mold 32 a and the fixed side mold 32 b are clamped, and the preform molded body 5 laminated on the resin molded body 2
- the movable side mold 32a and the fixed side mold 32b are opened and formed.
- the decorative molded body 10 in which the resin molded body 2 and the skin material 1 laminated on the resin molded body 2 are integrated is taken out.
- the insert molding of the skin material including the fiber material having the through holes causes the molten resin in forming the resin molded body to intrude into the through holes, thereby forming the decorative molded body, The surface of the resin molding intrudes into the through holes of the skin material. Thereby, the resin molding is visually recognized from the through hole.
- the through holes formed in the surface material with the resin molded body it is possible to obtain a decorated molded body in which the shape of the through holes is not easily deformed.
- the surface material may be a sheet of a fibrous material such as non-woven fabric, woven fabric or knitted fabric, or a leather-like sheet such as artificial leather or synthetic leather containing a fibrous material.
- a fibrous material such as non-woven fabric, woven fabric or knitted fabric
- a leather-like sheet such as artificial leather or synthetic leather containing a fibrous material.
- artificial leather is preferable from the viewpoint of being excellent in designability as well as being excellent in formability since it is easily stretched at the time of molding.
- an artificial leather will be described in detail as a skin material.
- the artificial leather includes artificial leather making machines in which a high molecular weight elastic body is added to a non-woven fabric which is a fiber material and napped artificial leather having its surface brushed and a silver artificial leather having a silver surface resin layer.
- the resin forming the non-woven fiber include, for example, polyethylene terephthalate (PET), modified PET, polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT), polytriethylene terephthalate, polyhexamethylene terephthalate, polypropylene Aromatic polyester resins such as terephthalate and polyethylene naphthalate; Aliphatic polyester resins such as polylactic acid, polyethylene succinate, polybutylene succinate, polybutylene succinate adipate and polyhydroxybutyrate-polyhydroxyvalerate copolymer Polyamide resins such as polyamide 6, polyamide 66, polyamide 610, polyamide 10, polyamide 11, polyamide 12, polyamide 6-12, etc .; Polyolefin resins such as polyethylene, polybutene, polymethylpentene, chlorinated polyolefins, ethylene vinyl acetate copolymer, styrene ethylene copolymer, etc .; formed from modified poly
- the fineness of the fibers forming the non-woven fabric is not particularly limited, and even if the fineness of ordinary fibers exceeding 1 dtex, the microfine fibers having 1 dtex or less, further 0.6 dtex or less, particularly 0.5 dtex or less It may be fineness.
- a non-woven fabric of ultrafine fibers is particularly preferable in that it is easy to stretch in preform molding and insert molding, and therefore it is difficult to cause tears, deformation of through holes, breakage and the like in the skin material.
- polyurethanes such as polycarbonate polyurethane, polyester polyurethane, polyether polyurethane, acrylic elastic body, polyurethane acrylic composite elastic body, poly chloride Vinyl, synthetic rubber and the like can be mentioned.
- polyurethane is preferable from the point of being excellent in adhesiveness and mechanical properties.
- the content of the polymer elastic body is preferably 0.1 to 50% by mass, more preferably 5 to 35% by mass, and particularly preferably 8 to 30%. If the content of the polymer elastomer is too high, the formability tends to be reduced.
- a napped artificial leather is obtained by raising one surface of an artificial leather green machine in which a high molecular weight elastic body is applied to a non-woven fabric.
- a silver-plated artificial leather can be obtained by laminating and forming a resin layer having a silver surface tone on one surface of an artificial leather producing machine in which a polymeric elastic body is applied to a non-woven fabric.
- a method of forming a napped artificial leather there is a method of forming a suede-like or nubuck-like napped surface on which a raising process is performed by buffing the surface of a living artificial leather.
- the buffing process is a process of rubbing the surface of the artificial leather green with a sandpaper, a brush or the like to raise fibers.
- a method of forming a silver-plated artificial leather a method of forming a silver-faced resin layer containing a polymeric elastic body such as polyurethane by a method such as a dry surface coating method or a direct coating method on the surface of an artificial leather green machine can be mentioned.
- a polymer elastic body for forming a silver-faced resin layer polyurethane, an acrylic elastic body, etc. which are conventionally used for forming a silver-faced resin layer can be used.
- a through hole is formed in the skin material of the present embodiment.
- a skin material having a through hole is preformed or insert-molded, when the skin material is heated and extended in each molding step, the shape of the through hole is not maintained or the adjacent through hole is separated. Parts of the skin may break.
- shapeability is required. From such a point, when using an artificial leather as a skin material, it is preferable to select the artificial leather which has the following characteristics.
- the breaking elongation at 20 ° C. of the artificial leather is preferably 50% or more, more preferably 100% or more.
- the breaking stress at 20 ° C. of the artificial leather is preferably 50 N / 2.5 cm or more, more preferably 100 N / 2.5 cm or more.
- the breaking elongation and the breaking stress show stress and elongation under a speed condition of 100 mm / min in a tensile tester.
- Example 1 Thickness 0.5mm vertical 140 ⁇ horizontal 140 mm, artificial leather (fineness 0.9dtex having napped surface of suede, and a superfine fiber and polyurethane T g 100 ° C. denaturation PET, apparent density 0.50g prepared / cm 3 ).
- the elongation at break at 20 ° C. of the obtained artificial leather was 130%, and the breaking stress was 250 N / 2.5 cm.
- FIG. 5 A large number of through holes as shown in FIG. 5 were formed in the artificial leather using a drill by a multiaxial drilling machine with NC control.
- a mesh-like area indicating an icon indicating reproduction, pause, and fast-forwarding of the acoustic device and a through hole forming an annular mesh-like area were formed.
- the mesh-like region has seven types of circular through holes with diameters of 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, and 1.4 mm, and the area is is about 2700 mm 2, the void ratio due to the gap of the through holes was in the range of 10-60%.
- an artificial leather sheet A which is a skin material including a fiber material, including a mesh-like region having a large number of through holes was produced.
- insert molding was performed using the preform molded body.
- the movable and stationary molds of the injection mold mounted on the electric injection molding machine (SE-100 manufactured by Sumitomo Heavy Industries, Ltd.) opened, A preform molding of the artificial leather sheet A was placed on the cavity forming surface of the movable mold. Then, the movable mold and the fixed mold were clamped.
- the cavity shape of the injection mold was a hemispherical dome shape having a thickness of 2 mm, a diameter of 80 mm, and a height of 10 mm.
- a transparent ABS resin was injected under the conditions of a resin temperature of 230 ° C. and a mold temperature of 40 ° C. to fill the cavity. After complete filling, the mold was cooled and then opened. Thus, a decorated molded body in which the preform molded body was integrated on the surface of the transparent ABS resin molded body was obtained.
- the obtained decorative molded body is cut in the cross-sectional direction, and the depth (d) of the through hole and the height (Hr) of the surface of the resin molded body which has entered the through hole are measured by a microscope, and the ratio (Hr) / D) was calculated.
- the ratio (Hr / d) of the height (Hr) of the surface of the intruded resin molded body to the depth (d) of the through hole is 0.5 through 1.4 mm in the through hole with a diameter of 0.2 mm At 0.85.
- the obtained decorative molded body was excellent in shape retention without tearing of the surface material, deformation of the through holes, and breakage. In addition, even if the surface of the surface material was rubbed with a nail, no breakage, deformation or breakage of the through hole occurred. Moreover, it was excellent in the designability which light-emits from a through-hole, when it lets light pass.
- Example 2 Instead of artificial leather having a napped surface of the suede comprises a surface resin layer, an artificial leather (fineness 0.9dtex grain-finished, and a superfine fiber and polyurethane T g 100 ° C. denaturation PET, apparent density
- An artificial leather sheet B which is a surface material including a fiber material, including a mesh-like region having a large number of through holes was similarly manufactured except that 0.6 g / cm 3 ) was used. Then, in place of the artificial leather sheet A having a suede-like raised surface, a preform-molded body was formed in the same manner as that of the artificial leather sheet B with silver tone. In addition, the preform molded object was shape
- insert molding was performed in the same manner as in Example 1 except that a preform molding of the artificial leather sheet B was used instead of the preform molding of the artificial leather sheet A, to obtain a decorated molding.
- the ratio (Hr / d) of the height (Hr) of the surface of the resin molded body which has penetrated to the depth (d) of the through hole is a through hole having a diameter of 0.3 mm In the through holes of 0.3 and 1.4 mm, it was 0.95.
- the obtained decorative molded body was excellent in shape retention without tearing of the surface material, deformation of the through holes, and breakage. In addition, even if the surface of the surface material was rubbed with a nail, no breakage, deformation or breakage of the through hole occurred. Moreover, it was excellent in the designability light-emitted from a through-hole, when it lets light pass.
- Example 1 In Example 1, in place of seven types of circular through holes having diameters of 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, and 1.4 mm, all of them are 0.20 mm in diameter.
- An artificial leather sheet C was manufactured in the same manner as in Example 1 except that a circular through hole of 1 mm was formed.
- a preform molded body was formed in the same manner except that the artificial leather sheet C was used. At this time, the preform-formed body of the artificial leather sheet C had a shape as a solid mold.
- insert molding was performed in the same manner as in Example 1 except that a preform molding of the artificial leather sheet C was used instead of the preform molding of the artificial leather sheet A, to obtain a decorated molding.
- the resin molded body did not penetrate into the through holes.
- the resulting decorative molded article was excellent in shape retention without tearing, deformation of the through hole, and breakage, but light emission from the through hole is poor when passing light, and the designability is poor.
- Example 2 In Example 1, in place of the seven kinds of circular through holes of 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm and 1.4 mm, all 3.2 mm in round shape An artificial leather sheet D was produced in the same manner as in Example 1 except that the through holes were formed.
- a preform molded body was formed in the same manner except that the artificial leather sheet D was used.
- the preform molded body of the artificial leather sheet D had a shape as a solid mold.
- insert molding was performed in the same manner as in Example 1 except that a preform molding of the artificial leather sheet D was used instead of the preform molding of the artificial leather sheet A, to obtain a decorated molding.
- the molten resin slightly leaked from the through hole at the time of insert molding, and the surface of the resin molded body was protruded.
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Abstract
Description
そして、図4(b)に示すように、雌型22と雄型21とを所定の圧力で型締めする。このとき、シート3は雄型21のコア21aと雌型22のキャビティ22aとの間に挟まれて賦形される。
以下、本実施形態においては、表皮材として、人工皮革について、詳しく説明する。
縦140×横140mmで厚さ0.5mmの、スエード調の起毛面を有する人工皮革(繊度0.9dtexで、Tg100℃の変性PETの極細繊維とポリウレタンとを含む、見かけ密度0.50g/cm3)を準備した。なお、得られた人工皮革の20℃における破断伸びは130%であり、破断応力は、250N/2.5cmであった。
スエード調の起毛面を有する人工皮革の代わりに、表面樹脂層を備える、銀付調の人工皮革(繊度0.9dtexで、Tg100℃の変性PETの極細繊維とポリウレタンとを含む、見かけ密度0.6g/cm3)を用いた以外は、同様にして、多数の貫通孔を有するメッシュ状領域を含む、繊維素材を含む表皮材である、人工皮革シートBを製造した。そして、スエード調の起毛面を有する人工皮革シートAの代わりに、銀付調の人工皮革シートBを用いた以外は同様にして、プリフォーム成形体を成形した。なお、プリフォーム成形体は、銀付調の樹脂層がドームの外側表面になるように成形した。このとき、人工皮革シートBのプリフォーム成形体は、しっかりとした型通りの形状に保形していた。
実施例1において、直径が、0.2mm、0.4mm、0.6mm、0.8mm、1.0mm、1.2mm、1.4mmの7種類の円形の貫通孔に代えて、全て0.1mmの円形の貫通孔を形成した以外は実施例1と同様にして人工皮革シートCを製造した。
実施例1において、0.2mm、0.4mm、0.6mm、0.8mm、1.0mm、1.2mm、1.4mmの7種類の円形の貫通孔に代えて、全て3.2mmの円形の貫通孔を形成した以外は実施例1と同様にして人工皮革シートDを製造した。
2 樹脂成形体
2a 溶融樹脂
3 シート
5 プリフォーム成形体
10 加飾成形体
12 光源
20 発光構造
h 貫通孔
M メッシュ状領域
Claims (13)
- 樹脂成形体と樹脂成形体の表面に積層された繊維素材を含む表皮材とを備え、
前記表皮材は貫通孔を有し、前記貫通孔内に前記樹脂成形体の表面が存在する加飾成形体。 - 前記貫通孔の深さ(d)に対する、前記樹脂成形体の表面の高さ(Hr)の比(Hr/d)が、0.3~1である請求項1に記載の加飾成形体。
- 前記表皮材は多数の前記貫通孔を有するメッシュ状領域を含む請求項1または2に記載の加飾成形体。
- 前記貫通孔は円換算直径の平均が0.1~3mmの範囲である1~3の何れか1項に記載の加飾成形体。
- 前記樹脂成形体が、光透過性を有する請求項1~4の何れか1項に記載の加飾成形体。
- 前記表皮材は人工皮革である請求項1~5の何れか1項に記載の加飾成形体。
- 前記人工皮革は、20℃における破断伸びが50%以上である請求項6に記載の加飾成形体。
- 前記人工皮革は、20℃における破断応力が50N/2.5cm以上である請求項6または7に記載の加飾成形体。
- 請求項1~8の何れか1項に記載の加飾成形体と、
前記加飾成形体の前記樹脂成形体の側に配置された光源と、を備える発光構造。 - 貫通孔を有する、繊維素材を含む表皮材を射出成形用金型のキャビティに収容する工程と、
前記射出成形用金型に溶融樹脂を射出することにより、成形される射出成形体の表面に前記表皮材を一体化させた加飾成形体を形成する工程と、を備え、
前記貫通孔内に前記樹脂成形体の表面を存在させるように成形する加飾成形体の製造方法。 - 前記表皮材は多数の前記貫通孔を有するメッシュ状領域を含む請求項10に記載の加飾成形体の製造方法。
- 前記表皮材は、前記キャビティの形状に対応する形状に賦形されて、前記キャビティに収容される請求項10または11に記載の加飾成形体の製造方法。
- 前記表皮材は人工皮革である請求項10~12の何れか1項に記載の加飾成形体の製造方法。
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CN201880078920.1A CN111511524A (zh) | 2017-12-15 | 2018-11-14 | 装饰成型体及其制造方法以及使用了装饰成型体的发光构造 |
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US20210071847A1 (en) | 2021-03-11 |
KR20200073271A (ko) | 2020-06-23 |
EP3725488A1 (en) | 2020-10-21 |
EP3725488A4 (en) | 2021-07-21 |
TW201934301A (zh) | 2019-09-01 |
EP3725488B1 (en) | 2024-05-22 |
JP7061623B2 (ja) | 2022-04-28 |
JPWO2019116813A1 (ja) | 2020-12-17 |
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