JP3345076B2 - Manufacturing method of molded products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended to cover a part which may be touched by a human, such as a car interior, a housing of office automation (OA) equipment and home electric appliances, a stationery, sanitary goods, daily necessities, and a building material interior. The present invention relates to a method for producing a molded article using a soft touch sheet for covering which can give a good feeling to an article by using the soft touch sheet for covering.

[0002]

2. Description of the Related Art In order to impart a suede feeling (soft touch feeling) to the surface of a plastic molded article or a metal molded article, a suede-like (soft touch) paint has been generally used. In such a case, it is necessary to adjust the viscosity and the concentration of the paint, and the operation becomes complicated. A paint using an organic solvent requires a booth to dry the solvent, and further causes pollution of the working environment and safety and health problems.

In order to solve these problems, for example, JP-A-2-41243 discloses a matte paint in which a bead pigment is added to a vehicle of an ionizing radiation-curable resin on a base film having good moldability. Suede-like sheets applied and cured have been proposed as an alternative to paint. An apparatus for decorating a sheet at the time of injection molding is proposed in, for example, Japanese Patent Application Laid-Open No. 59-202830. Further, Japanese Patent Application Laid-Open No. 62-251111 discloses that a thermoplastic sheet is set in a lower mold in advance, and then a resin is introduced into the lower mold and pressed to form a thermoplastic sheet (decorated) on the surface of a molded product. Sheet) is proposed.

[0004]

However, Japanese Patent Laid-Open No. 2-4 / 1990
The sheet described in No. 1243 was inferior in the spreadability of the entire sheet because the coating film of the sheet was made of a resin cross-linked by an electron beam. Therefore, this sheet and
When an attempt is made to obtain a molded product having a soft touch feeling on the surface using the apparatus proposed in Japanese Patent Application Laid-Open No. 59-202830, the following problems arise.

[0005] That is, if the sheet is to be adhered to the surface of the adherend having irregularities or a curved surface, the spreadability of the sheet is poor, and the sheet may be torn. Was difficult to impart. The molded article obtained by the method disclosed in Japanese Patent Application Laid-Open No. 62-251111 has a hard feel when touched because its surface is formed only of a thermoplastic resin. Therefore, this manufacturing method cannot manufacture products that require a soft touch, such as housings, cases, and interior materials of automobiles.

The present invention solves the above-mentioned problems and provides a manufacturing method capable of easily manufacturing a molded product having a soft touch (suede-like) feeling using a sheet having a soft touch (suede-like) layer. It is intended to be.

[0007]

Means for Solving the Problems] In order to achieve this object, the invention according to claim 1 (hereinafter, referred to as "the invention of claim 1"), are hand formed to tree butter foam a substrate layer which are provided on one side of the substrate layer, fine by the elastic fine particles to form made that surface by stretching a composition comprising a thermoplastic elastomer and elastic fine particles as main components A step of introducing a soft touch sheet having a soft touch layer provided with irregularities into a mold such that the soft touch layer is on the surface side of the molded article, and forming the molded article body in the mold. It is characterized by including a step of introducing a resin and a step of simultaneously molding the soft touch sheet and a molding resin in the mold.

The invention described in claim 2 (hereinafter referred to as “claim 2
Referred to the invention ") comprises a substrate layer which is hand formed into tree butter foam is provided on one side of the substrate layer, the composition containing a thermoplastic elastomer and elastic fine particles as main components after the soft touch sheet having said to form made is a surface acoustic particle soft touch layer in which fine unevenness is provided by, preformed in the mold surface shape of the mold in advance by pneumatically molding by stretching things, the A step of introducing into the mold such that the soft touch layer is on the surface side of the molded article, a step of introducing a molding resin to be a molded article body into the mold, and molding the molding resin in the mold And at least a step of integrally molding the soft touch sheet and the molded article main body.

The invention according to claim 3 (hereinafter referred to as “claim 3
The referred to invention ") comprises a substrate layer which is manually formed on the tree butter foam is provided on one side of the base layer, a composition containing a thermoplastic elastomer and elastic fine particles as main components
Step of soft touch sheet with a soft touch layer in which fine irregularities by the elastic fine particles to form made that the surface is provided by extending, is introduced into the mold, the soft touch sheet within the mold Is formed by pneumatic molding along the mold surface.

The details of these are as follows. Soft touch sheet used in the method for producing a molded article of the present invention comprises a substrate layer which is manually formed on the tree fat foam, is provided on the surface of the base material layer, a thermoplastic elastomer and elastic fine particles (preferably are those having an elastic bead) and the soft touch layer fine irregularities on the shape made that surface by stretching a composition comprising is provided as a main component.

The thermoplastic elastomer used for the soft touch layer refers to a polymer material which has rubber elasticity at normal temperature and is plasticized at high temperature and can be processed in various forms. The types are, for example, polystyrene, polyurethane,
Polyolefin type, polyester type, polyvinyl chloride type, polyamide type, ionomer type, fluoro rubber type,
It is classified into 1,2 polybutadiene, trans 1,4 polyisoprene, and synthetic natural rubber.

In general, these thermoplastic elastomers often share a rubber component (soft segment) having entropy elasticity in the molecule and a molecular constraint component (hard segment) for preventing plastic deformation. Although it may have a partially crosslinked structure as far as possible, it does not have a wide range of three-dimensional stitch crosslinked structure. The hardness of these thermoplastic elastomers varies depending on the feel to be obtained and the hardness of the elastic fine particles to be used, but is generally preferably in the range of 20 to 98 in JIS K6301 hardness.

Examples of the thermoplastic elastomer include, for example, polyurethane-based block copolymers having a hard segment of polyurethane and a soft segment of polyether, polyester, polycarbonate or the like. In the case of polystyrene, there are block copolymers having polystyrene as a hard segment and polybutadiene, polyisoprene, and polyethylene-polybutylene as a soft segment, and those obtained by further adding hydrogenation or functional groups thereto.

In the polyolefin type, those having polypropylene as a hard segment and having ethylene as a soft segment, those having a small amount of a diene component together with ethylene (EPR (ethylene-propylene rubber), EPD (ethylene-propylene- Diene copolymer), EPR (ethylene-propylene rubber)), those obtained by blending them, those partially cross-linked by further adding an organic peroxide, and those obtained by adding unsaturated hydroxy. Examples include monomers, those modified by grafting with unsaturated carboxylic acid derivatives, and butyl rubber-grafted polyethylene.

In the case of the polyester type, there are copolymers having polyester as a hard segment and polyether as a soft segment. In the case of polyvinyl chloride, a method of extremely increasing the degree of polymerization of polyvinyl chloride (polymerization degree of 2,000 to 2500), a method of introducing a three-dimensional crosslinked structure into a part of polyvinyl chloride, a method of introducing an ionic crosslinked structure And those obtained by

In the case of polyamides, there are polyamides using polyamide as a hard segment and polyether as a soft segment. The type of the thermoplastic elastomer is selected in consideration of the performance desired as a soft touch sheet. For example, when scratch resistance and wear resistance are required, a urethane-based thermoplastic elastomer is preferably used.

The above-mentioned elastic fine particles have the property of recovering elasticity when they are opened after being pressed until their shape is deformed. For example, polyurethane, acrylic-urethane copolymer, polystyrene, styrene-isoprene copolymer Those composed of polymers and the like can be mentioned. These elastic fine particles
Those having a maximum particle size distribution in the range of 1 to 50 µm are 20 to 200 parts, preferably 50 to 200 parts by weight with respect to 100 parts by weight of the thermoplastic elastomer resin (hereinafter, simply referred to as “parts”).
It is preferable to add 150 parts. That is, if the particle size is 1μ
If it is less than m, a sufficient soft touch feeling cannot be obtained on the obtained sheet, and depending on the thickness of the sheet, the particle size is 50 μm.
When the ratio exceeds the above, cracks tend to occur on the surface of the sheet when the sheet is stretched. On the other hand, if the addition amount is less than 20 parts, sufficient unevenness cannot be obtained and the soft touch feeling is low, and if the addition amount is more than 200 parts, the sheet is liable to crack when the sheet is stretched.

The number of the elastic fine particles is not limited to one type, and may be 2
More than one species may be used in combination. Also, when using a flexible thermoplastic elastomer or when a slightly hard feel is acceptable,
For example, crosslinked polymethyl methacrylate or hard fine particles made of an inorganic material may be used. On the other hand, as the base material layer
The foam made of a thermoplastic elastomer or a synthetic resin is employed in order to impart a flexible soft touch feeling Ri yo
You.

Examples of the material constituting the foam include polyolefin resins such as polypropylene and polyethylene, polystyrene resins such as polystyrene and styrene-maleic anhydride copolymer, and polyurethane resins.
Foamable resin materials such as polyvinyl chloride resin and various thermoplastic elastomer resins are exemplified. In addition, the expansion ratio of these foams is to express a soft touch feeling,
It is preferably about 5 to 50 times, particularly preferably about 20 to 50 times.

The method of manufacturing the soft touch sheet used in the present invention includes, for example, a method of laminating a sheet to be a soft touch layer on one side of a sheet to be a base material layer by heating and laminating, There is a method (extrusion lamination) in which a plastic elastomer and elastic fine particles are mixed, and the mixture in a molten state is laminated on a sheet serving as a base material layer composed of a resin immediately after melt-kneading and extruding with a twin screw extruder or the like (extrusion lamination). .

The sheet to be the soft touch layer is, for example,
It is obtained by mixing a thermoplastic elastomer and elastic fine particles, melt-kneading and extruding with a twin-screw extruder or the like to form a sheet, and then stretching the sheet. The elongation of the sheet may, of course, be performed in the solid state of the sheet (in this case, generally referred to as stretching), but is not limited to this case, and the sheet shape is substantially maintained. If so, it may be performed in a semi-solid state immediately after extrusion.

Specifically, the material may be stretched by a take-up roll immediately after being extruded, or may be stretched by a tenter stretching method after cooling and shaping the sheet to such an extent that the sheet can be wound up. In the case of stretching with a take-up roll, it is preferable that the cooled roll is brought into contact with the sheet after the temperature of the sheet has fallen below the softening temperature of the thermoplastic elastomer used. In the case where a rubber roll or the like having a roughened surface is used as the cooled roll, the temperature may be around the softening temperature.

The magnification of elongation depends on the compatibility between the thermoplastic elastomer used and the elastic fine particles, but is preferably at least 1.2 times, more preferably at least 2 times. By this elongation, the elastic fine particles are dispersed and arranged on the sheet surface layer, and fine irregularities are formed on the surface.
You.

In the case of laminating a material having poor adhesion during the above lamination, it is preferable to provide a primer layer or an adhesive layer between the layers. For example, when a soft touch layer made of a polyurethane-based thermoplastic elastomer is laminated on a polyolefin-based substrate layer, a chlorinated polyolefin layer or an acid-modified styrene-ethylene-butylene-styrene copolymer ( SEBS) or the like is preferably used.

The adhesive used for the adhesive layer is, for example, a pressure-sensitive adhesive such as a rubber-based, acrylic, urethane-based or silicone-based adhesive, a solvent-based adhesive, or an ethylene-vinyl acetate copolymer (EVA). And hot-melt adhesives such as styrene-isoprene-styrene block copolymer (SIS). Also, for example, a microcapsule-curable post-curing adhesive can be used. Examples of the material include an uncrosslinked unsaturated polyester adhesive, an uncrosslinked acrylic adhesive, and the like.

On the other hand, for example, when a soft touch layer made of a polyurethane-based thermoplastic elastomer is laminated on a polyolefin-based base material layer, the material constituting the polyolefin-based base material layer may be a material modified in advance by acid modification or graft modification. , Or by blending these materials with an unmodified polyolefin, or by laminating a modified polyolefin sheet on an unmodified polyolefin sheet to improve adhesion.

In the soft touch sheet used in the present invention, if necessary, a coloring agent such as a pigment and a dye, an antioxidant, an ultraviolet absorber, and an ultraviolet stabilizer (eg, a hindered amine) may also be used. Can be added. Pigments and dyes used in paints can be used as the coloring agent.Examples of the pigment include titanium oxide, iron oxide, carbon black, cyanine pigments, quinacridone pigments, and the like. Examples include anthraquinone dyes, indigoid dyes, and stilbenzene dyes. Further, metal powder such as aluminum flake, nickel powder, gold powder, silver powder and the like may be used as the coloring agent. These materials are preferably fine particles as much as possible. When these colorants are added, the soft touch feeling given by the elastic fine particles may be different. Therefore, in a system to which the colorant is added, the appropriate amount of the elastic fine particles may change.

Further, various functionalizing agents can be added to the soft touch sheet used in the present invention in order to impart various functions. Examples of the function imparting agent include a conductive material, a dew condensation preventing agent, and a photochromic compound. In order to improve the design of the sheet, a pattern such as printing may be applied. In this case, the printing is preferably provided on the surface of the soft touch layer (on the base sheet).

The thickness of the soft touch sheet thus obtained varies depending on the sheet configuration.
In the first and second aspects of the present invention, the soft touch layer is preferably from 5 to 500 μm, and the base layer is preferably from about 200 to 3000 μm.
The thickness is preferably 500 μm, and the thickness of the substrate layer is about 500 to 5000 μm.

In the first and second aspects of the present invention,
As the molding resin for forming the molded article main body, any material can be used as long as it is a material usually used for molding a molded article. For example, ABS (acrylonitrile-butadiene-
Styrene copolymer), polyethylene, polypropylene,
Polyvinyl chloride, polystyrene, polycarbonate, acrylic resin, polyetherimide, polyphenylene sulfide, polyamide (nylon), the above-mentioned thermoplastic elastomers, and those obtained by adding glass fibers or inorganic fillers to these materials No.

In the first aspect of the present invention, the molding method for simultaneously molding the soft touch sheet and the molding resin includes:
Stamping molding or injection molding is used. In addition,
In this molding method, a soft touch sheet is introduced into a mold such that the soft touch sheet is on the surface side of a molded product from which a soft touch layer is obtained. Thereafter, in the case of stamping molding, a molding resin is introduced into a mold, and then the mold is closed to carry out molding. In the case of injection molding, the mold is closed and then the resin is introduced to carry out molding.

In the second aspect of the present invention, the preforming of the soft touch sheet is not particularly limited, but can be performed by pneumatic forming, that is, vacuum forming, air forming, etc. in a mold. The preformed soft touch sheet is temporarily removed from the preforming die, introduced into the die for forming the molded product main body so that the soft touch layer side is on the front side, and the molded product main body is formed by injection molding or stamping molding. At the same time as molding, the preformed soft touch sheet is integrated with the surface of the molded article main body, or after being preliminarily molded by the molded article body molding die and removed from the mold, the preformed article is again described above. After being introduced into the mold, the preformed soft touch sheet can be integrated with the surface of the molded article main body at the same time as molding the molded article main body portion by injection molding or stamping molding in the same manner as described above.

According to the first aspect of the present invention, the soft touch sheet is optionally introduced into a mold and preformed, and a molding resin is introduced into the mold as it is to integrate the soft touch sheet. Is also good. In the invention of claim 3, the pneumatic forming includes vacuum forming and pneumatic forming, and may be a generally known plug assist forming, a method in which a sheet is uniformly stretched once with pressurized air, and then a method of performing vacuum forming. Absent. The mold used for molding is not limited to a metal mold, and may be a resin mold.

The molded article obtained by the method for producing a molded article of the present invention has a soft touch feeling on the product surface, and thus can be suitably used in places where humans can easily touch. That is, for example, automobile interior parts such as door panels, instrument panels, handles, gear lever knobs, door knobs, and various switches, portable products (telephones, cassette tape recorders, compact discs,
TVs, refrigerators, housings for home appliances such as TVs, switches, etc., housings for office automation products such as personal computers, printers, keyboards, etc., sanitary units for Western-style toilets, bathtubs, chairs, mats, shelves, etc. Sporting goods, cases, such as products and chamber products, grips for bats, rackets, clubs, etc.
It can be used for daily necessities such as containers, housings for stationery products, benches, chairs, tables, sofas and the like.

[0035]

According to the structure of the first aspect of the present invention, the soft touch sheet is introduced into the mold in advance so that the soft touch layer is on the surface of the molded article, and the molded article body is injection-molded or stamped. At the same time as molding, the soft touch sheet is molded so as to integrate with the molded product body surface shape,
A molded product having a soft touch layer with a soft touch layer formed on the surface and excellent in soft touch feeling can be easily formed.

This is convenient when a (temporary) storage of the preform is required. According to the configuration of the second aspect of the present invention, first, after the soft touch sheet is preformed, the preformed product is introduced into a mold so that the soft touch layer comes on the surface of the molded product, and the molded product body is removed. By molding by injection molding or stamping molding, the soft touch sheet is molded so as to be integrated with the surface shape of the molded product body, and a molded product excellent in soft touch feeling with a soft touch layer formed on the surface is easily formed can do.

According to the third aspect of the invention, the soft touch sheet is introduced into a mold such that the soft touch layer is on the surface of the molded product, and is molded by pneumatic molding or the like, whereby the base material layer is formed. Becomes a molded product body, and a molded product excellent in soft touch feeling having a soft soft touch layer formed on the surface can be easily molded. Moreover, in any of the configurations of the present invention, the soft touch sheet has a soft touch layer composed of a thermoplastic elastomer and elastic fine particles, so that the soft touch layer spreads sufficiently without forming a crack or the like during molding. .

[0038]

EXAMPLES The present invention will be described below in detail by comparing Examples and Comparative Examples. Incidentally, shows the parts by weight of the solid content "parts" in the following.

[0039]

[0040]

[0041]

[0042]

[0043]

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

Example 1 100 parts of a thermoplastic urethane elastomer resin (manufactured by Nippon Miractran Co., Ltd., E375MNAT) 100 parts elastic fine particles (manufactured by Sekisui Plastics Co., Ltd., EAX15 (clear), elastic fine particles of cross-linked acrylic acid ester, Immediately after extruding the thermoplastic elastomer and the elastic fine particles with a twin-screw kneading extruder, the first sheet to be a soft touch layer is prepared while stretching the sheet by a cooled take-off roll. did.

The temperature of each part of the extruder was set under the following conditions. Screw rear 150 ° C, middle 16
5 ° C, front 175 ° C, die 175 ° C. Die diameter / cross-sectional area of the obtained sheet = 5, and the sheet was stretched before the take-off roll, and ascertained by an electron microscope, fine unevenness was obtained on the sheet surface.

The surface temperature of the adhesive layer was changed from the obtained first sheet to a polypropylene foam sheet (foaming ratio: 20 times, an acid-modified SEBS laminated on one surface of the sheet as an adhesive layer) as a base material layer. Laminate by heating and laminating to 150 ° C, and the thickness of the soft touch layer is 50μ.
m, a soft touch sheet 23 having a substrate layer thickness of 1 mm was obtained. Note that a rubber roll at room temperature was used as the laminating roll . Use the soft touch sheet obtained above
Then, stamping molding was performed according to the following method.
The molding machine used was an upper mold 20 and a lower mold 20 as shown in FIG.
It has a mold 21 and a resin injection machine 22. Lower surface of upper mold 20
Is provided with a convex portion 20a.
The concave portion 21a is provided at a position corresponding to the portion 20a.
You. A resin injection path 21b is formed at the center of the lower mold 21.
The injection of the resin injection machine 22 into the resin injection path 21b.
22a is provided. First, as shown in FIG.
The soft mold is placed between the upper mold 20 and the lower mold 21 heated to a predetermined temperature.
The soft touch screen so that the touch layer side faces the upper mold 20 side.
Introduce the sheet 23 and soft touch the periphery of the lower mold 21
The periphery of the sheet 23 was fixed with fixing pins 24. Then
As shown in FIG. 3, the nozzle 22a of the resin injection machine 22
Mold resin 25 is injected into lower mold 21 at a nozzle tip temperature of 230 ° C.
Issued. As the molding resin 25, polypropylene (Mitsubishi Oil
BC3, manufactured by Kagaku Co., Ltd.). Next, as shown in FIG.
The sheet 23 is closed by closing the upper mold 20 at a predetermined pressure.
Forming and stamping molding resin 25
A molded article 27 having the shape shown in FIG. 5 was obtained. In FIG. 4,5, L ₁ is
200 mm, L ₂ is 300 mm, L ₃ is 30 mm, L ₄ is 150m
m, L ₅ is 280 mm, L ₆ is 60 mm, L ₇ is 500mm der
You.

Example 2 100 parts of a thermoplastic urethane elastomer resin (ET260R, manufactured by Takeda Verdish Urethane Co., Ltd.) Elastic fine particles (EAX15 (black), manufactured by Sekisui Plastics Co., Ltd., elasticity of cross-linked acrylic acid ester Fine particles, average particle size 15 μm) 70 parts Immediately after extruding the thermoplastic elastomer and the elastic fine particles by a twin-screw kneading extruder, the extruded sheet is taken out while being extended by a cooled take-up roll, and the soft touch layer is formed. A first sheet was prepared.

The set temperature of each part in the extruder was set under the following conditions. Screw rear 150 ° C, middle 16
5 ° C, front part 175 ° C, die part 175 ° C.
The cross-sectional area of the obtained sheet was 10, and the first sheet was stretched before the take-up roll, and ascertained with an electron microscope, fine irregularities were obtained on the sheet surface.

The obtained first sheet was treated with a thermoplastic elastomer (Millastomer 803 manufactured by Mitsui Petrochemical Industries, Ltd.).
0N) on a foamed sheet of PP (expansion ratio: 25 times) by extrusion lamination, a sheet serving as a base layer, and a heat-laminated second sheet having an adhesive layer made of acid-modified SEBS having a thickness of 10 μm. Sheet 23 was obtained.
The heating lamination temperature was set such that the temperature of the adhesive layer was 160 ° C., and a rubber roll at room temperature was used as the lamination roll.

Using the obtained soft touch sheet 23, a molded product 27 was obtained in the same manner as in Example 1 . Above implementation
Table 1 shows the appearance and soft touch feeling of the molded article 27 obtained in Examples 1 and 2, together with the preheating temperature of the sheet 23.

[0062]

[Table 1] Soft touch feeling evaluation 1 point: Not soft touch 2 points: Not a little soft touch 3 points: Soft touch 10 people evaluated, a total of 25 points or more was good, and 15 points or less was bad And

[0063]

[0064]

[0065]

Example 3 A soft touch sheet similar to that obtained in Example 1 was used.
Then, a molded product 30 shown in FIGS. 6 and 7 is obtained by a vacuum molding machine.
Was. In the figure, 31 is a soft touch layer, 32 is a base material layer.
A is, the size of each part, L ₈ is 150 mm, L ₉ 150
mm, L ₁₀ is 50 mm, R got 10mm moldings.

Example 4 A molded product 30 was obtained in the same manner as in Example 3 using the same soft touch sheet as that obtained in Example 2 .

Example 5 The foamed soft touch sheet obtained in Example 2 was prepared by using a sheet obtained by laminating a 3 mm sheet prepared by extrusion molding containing 20 parts of an inorganic filler in 100 parts of a polypropylene resin. A molded product 30 was obtained in the same manner as in Example 3 .

Comparative Example Thermoplastic urethane elastomer resin (Nippon Milactran)
(E375MNAT, manufactured by Co., Ltd.) using a twin-screw kneading extruder.
Immediately after the sheet is taken out, the sheet
The first sheet to be taken out was created while being extended. In addition,
The set temperature of each part in the output machine was set under the following conditions. School
Liu rear 150 ° C, middle 165 ° C, front 175 ° C,
Die part 175 ° C. Die diameter / cross-sectional area of obtained sheet =
10, the sheet is stretched before the take-off roll.
However, when confirmed with an electron microscope,
Fine irregularities were not obtained. As in Example 3 using the obtained sheet over preparative was obtained in molded articles 30.

[0070] The appearance and soft touch feeling of the molded article obtained in Comparative Example and Contact above Examples 3-5, shown in Table 2 together with sheet molding temperature.

[0071]

[0072]

[Table 2] Soft touch feeling evaluation 1 point: Not soft touch 2 points: Not a little soft touch 3 points: Soft touch 10 people evaluated, a total of 25 points or more was good, and 15 points or less was bad And

[0073]

The method for producing a molded article according to the present invention is configured as described above, so that a molded article having a matte appearance and a soft touch when touched on the surface can be easily obtained. Can be molded. Moreover, there is no need for a booth or the like for drying the solvent as in the method of forming the soft touch layer by painting, and the pollution of the working environment and the problems of safety and health are eliminated.

[Brief description of the drawings]

FIG. 1 shows a stamping apparatus used in Examples 1 and 2.
FIG.

FIG. 2 is a view showing a soft tool attached to a lower mold of the stamping molding apparatus of FIG .
FIG. 4 is an explanatory diagram illustrating a state in which a touch sheet is set.

FIG. 3 is a view showing a stand on which the soft touch sheet of FIG . 2 is set;
Put the molding resin that will be the molded product body in the lower mold of the ping molding device.
It is explanatory drawing explaining the state which injected.

FIG. 4 closes the upper mold to the lower mold into which the molding resin of FIG . 3 has been injected.
FIG. 4 is an explanatory view illustrating a state in which stamping molding is performed.

FIG. 5 is a sectional view of a molded product obtained in Examples 1 and 2.

FIG. 6 shows an example of a molded article obtained by the method according to the third aspect of the present invention.
It is a perspective view showing.

FIG. 7 is a sectional view taken along line XX of FIG . 6;

[Description of Signs] 20 Upper die 21 Lower die 23 Soft touch sheet 27 Molded product 30 Molded product 31 Soft touch layer 32 Base material layer

Claims (3)

(57) [Claims] 1. A method for producing a molded article molded article having a soft touch layer on the surface of the body, and the base layer which is hand formed into tree fat foam, provided on one side surface of the substrate layer cage, a soft touch sheet and a thermoplastic elastomer and elastic fine particles and the soft touch layer fine unevenness by the elastic fine particles to form made that surface by stretching a composition comprising is provided as a main component, wherein A step of introducing into the mold such that the soft touch layer is on the surface side of the molded article, a step of introducing a molding resin to be the molded article body into the mold, and the soft touch sheet in the mold. A method for producing a molded article, comprising a step of simultaneously molding with a molding resin. 2. A method for producing a molded article having a soft touch layer on the surface of the molded article body, and the base layer which is hand formed into tree fat foam, provided on one side surface of the substrate layer cage, a soft touch sheet and a thermoplastic elastomer and elastic fine particles and the soft touch layer fine unevenness by the elastic fine particles to form made that surface by stretching a composition comprising is provided as a main component in advance After preforming to the mold surface shape of the mold by pneumatic molding, a step of introducing the soft touch layer into the mold such that the soft touch layer is on the surface side of the molded article, and forming a molding resin to be a molded article body in the mold. Step of introducing, and molding a molding resin in the mold,
A method for manufacturing a molded article, comprising a step of integrally molding at least the soft touch sheet and the molded article body. To 3. The surface method of manufacturing a molded article comprising a soft touch layer and base layer are manually formed on the tree butter foam is provided on one side of the substrate layer, a thermoplastic elastomer composition containing an elastic fine particles as main components and
Step of soft touch sheet with a soft touch layer in which fine irregularities by the elastic fine particles to form made that the surface is provided by extending, is introduced into the mold, the soft touch sheet within the mold Characterized by comprising a step of forming the molded product along the mold surface by pneumatic molding.