JP2001239546A - Method for manufacturing in-mold decorated molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for easily manufacturing an in-mold decorated molded article having excellent appearance without generating wrinkles or damage in a decorative sheet by sufficiently filling a cavity with a resin. SOLUTION: In the method for manufacturing the in-mold decorated molded article wherein the decorative sheet and the resin are integrated by arranging the decorative sheet in a mold having a cavity and injecting the molten resin based on an AS or ABS resin in the mold, the relation of 0.1<=b/a<=150 is formed between the gate diameter a (mm) of the mold and the melt flow rate b (g/10 min) of the resin based on the AS or ABS resin under the condition of a test temperature of 220 deg.C and a nominal load of 10 kg in the melt flow rate test method prescribed in JIS K7210.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a simultaneously-decorated molded article having an excellent appearance in which a cavity is sufficiently filled with a resin and a decorative sheet is not wrinkled or damaged.

[0002]

2. Description of the Related Art Conventionally, as a method of decorating the surface of a resin molded product, there is a simultaneous decorating method using a decorative sheet.
The simultaneous molding and decorating method includes a simultaneous molding and transferring method using a transfer material as a decorative sheet and an insert method using an insert material as a decorative sheet.

In the simultaneous molding transfer method, a transfer material having a transfer layer formed of a release layer, a pattern layer, an adhesive layer, etc. formed on a base sheet is sandwiched in a molding die, and a molten resin is injected into the die. This is a method in which, after cooling to obtain a resin molded product, a transfer material is adhered to the surface of the molded product, the base sheet is peeled off, and the transfer layer is transferred to the surface of the object to be transferred, thereby performing decoration.

[0004] In the insert method, an insert material in which a pattern layer or the like is formed on a base sheet is sandwiched in a molding die, a molten resin is injected into the die, and cooled to obtain a resin molded product. This is a method of decorating by bonding an insert material to the surface of a molded product.

[0005] The simultaneous molding transfer method and the insert method have a feature that a pattern can be formed even in a molded article having a shape in which it is difficult to directly form a pattern by a printing method.

[0006]

However, in these simultaneous molding and decorating methods, there is a problem that when the molten resin is injected, the decorative sheet is wrinkled or partially damaged. Was.

That is, there is a pin point gate as a gate of a molding die. The use of a molding die having a pinpoint gate has such advantages that the gate trace of the molded product is small and inconspicuous, and the runner can be automatically and easily removed from the molded product when the mold is opened. However, the high-temperature molten resin heated to about 190 to 260 ° C. in the cylinder flows through a small-diameter gate portion such as a pinpoint gate, thereby generating frictional heat at the gate portion and further increasing the temperature. The high-temperature molten resin suddenly collides with the decorative sheet mounted in the molding die at a high pressure, causing wrinkles in the decorative sheet, an adhesive layer, a pattern layer, a base sheet, etc., which constitute the decorative sheet. Is partially melted and scattered. In addition, if the gate diameter is small, the flow rate of the resin is hindered and the resin does not flow to the end of the molded product, and it is necessary to inject the resin with a higher pressure, so that the decorative sheet is more wrinkled or damaged. There was a problem that it was easy to do.

Further, as other gate types, there are a side gate, a film gate, and the like that require a gate treatment after molding but can inject a large amount of molten resin. When a molding die having such a relatively large gate diameter is used,
The high-temperature molten resin heated to 190 to 260 ° C. in the cylinder will flow into the cavity at once in a large amount, causing the decorative sheet to be wrinkled or the adhesive layer of the decorative sheet to be heated by the amount of heat of the molten resin. There has been a problem that the decorative sheet cannot be adhered to the molding resin due to being melted and flown, or the decorative sheet itself is damaged by the heat of the molten resin.

When the distance between the decorative sheet and the gate is small, the impact of the high-temperature and high-pressure molten resin is more likely to occur.

As described above, the adhesive layer of the decorative sheet, the pattern layer, the base sheet, and the like are damaged by the heat and pressure of the molten resin at the time of injection, resulting in poor adhesion, flow of the pattern, wrinkling of the decorative sheet, and melting of the decorative sheet. And the like, and there is a problem that a defect occurs in the appearance of the simultaneously decorated decorative molded product.

[0011] Accordingly, the present invention is to provide a simultaneously-decorated molded article having an excellent appearance in which the above-mentioned drawbacks are eliminated, the resin is sufficiently filled in the cavity, and the decorative sheet is free from wrinkling and damage. It is an object to provide a method for easily manufacturing.

[0012]

Means for Solving the Problems In order to achieve the above object, the method for producing a simultaneously decorated decorative molded article according to the present invention is constituted as follows.

That is, according to the method of manufacturing a simultaneously-decorated molded article of the present invention, a decorative sheet is placed in a mold having a cavity, and a molten resin mainly composed of an AS resin or an ABS resin is placed in the mold. Injection molding and a method of manufacturing a simultaneously decorated molded article to obtain a molded article in which the decorative sheet and the resin are integrated, the gate diameter of the mold is set to a (mm) and the Japanese Industrial Standards (JI
S) AS at a test temperature of 220 ° C. and a nominal load of 10 kg in the melt flow rate test method specified in K7210
When the melt flow rate of the resin or resin containing ABS resin as a main component is b (g / 10 min), 0.1 ≦
It was configured such that the relationship of b / a ≦ 150 was satisfied.

Further, in the above invention, the resin containing ABS resin as a main component is an ABS resin alone, a polymer alloy of ABS resin and polycarbonate (PC) resin, ABS
It may be configured to be at least one of a polymer alloy of a resin and a polybutylene terephthalate (PBT) resin, or a polymer alloy of an ABS resin and a polyamide (PA) resin.

In the above invention, the gate may be configured as a pinpoint gate.

In the above invention, the temperature of the molten resin mainly composed of the AS resin or the ABS resin is 190
The temperature may be configured to be ~ 260 ° C.

In the above invention, the decorative sheet may be constituted by a transfer material or an insert material.

Further, in the above invention, the decorative sheet has an adhesive layer, and the resin constituting the adhesive layer is:
It is made of a thermoplastic resin containing an AS resin or an ABS resin as a main component, and has a softening point defined by ASTM D648 of 5
You may comprise so that it may be 0-140 degreeC.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in detail.

[0020] In the method for manufacturing a simultaneously-decorated molded article according to the present invention, a decorative sheet is placed in a mold having a cavity,
In the method for manufacturing a simultaneously decorated molded article, a molten resin mainly composed of an AS resin or an ABS resin is injected into a mold to obtain a molded article in which the decorative sheet and the resin are integrated. Is a (mm), and the melt flow rate of a resin mainly composed of an AS resin or an ABS resin at a test temperature of 220 ° C. and a nominal load of 10 kg in a melt flow rate test method specified in JIS K7210 is b (g / 10 m
in), the relationship of 0.1 ≦ b / a ≦ 150 is established.

When the decorative sheet is supplied by the decorative sheet feeding device attached to the movable mold, or when the decorative sheet is larger than the cavity area, the mold has a sleep rate type molding mold structure. Is preferred. When the decorative sheet is smaller than or approximately equal to the cavity area, the present invention can be applied to a two-plate molding die structure.

In the present invention, a gate is a port through which a resin melted in a cylinder of a molding machine is injected into a cavity in a mold from a nozzle and flows into the cavity directly or through a runner, a sprue or the like in the mold. The part which becomes. Gates are classified into pinpoint gates, side gates, film gates, and the like, depending on the shape and the position of the gate. The pinpoint gate is
It is usually circular, in which case the gate diameter refers to the diameter of the gate. In addition, even if a pinpoint gate has an elliptical or other deformed shape for some reason, or if the shape of a gate such as a side gate or a film gate is not circular, the average of the minimum inner diameter and the maximum outer diameter of the gate is averaged. Is the diameter. When the shape of the gate is rectangular, the diameter is defined as the average of the diagonal line and the short side. When there are multiple gates, the average of the gate diameters is used as the gate diameter. In the case of a pinpoint gate, the gate diameter a is 0.
Preferably it is in the range of 8 to 2.5 mm. If the gate diameter is less than 0.8 mm, the flow of the molten resin will worsen,
Applying high pressure tends to damage the decorative sheet. When the gate diameter a exceeds 2.5 mm, the decorative sheet is easily melted by the heat of the molten resin.

In particular, the gate is preferably a pinpoint gate. When the pinpoint gate is employed, the gate trace of the simultaneously-decorated molded product is small and inconspicuous, and when the mold is opened, the runner can be automatically removed from the simultaneously-decorated molded product.

As the molten resin, ABS resin or AS
A resin whose main component is resin is used.

A resin mainly composed of an ABS resin or an AS resin has high physical strength such as rigidity after being formed into a molded product, and can be used as an adhesive layer when the decorative sheet has an adhesive layer. There are many types of resins with excellent adhesion. In the present invention, the term “main component” means that the content is 51% by weight or more as a component of the resin.

The AS resin generally refers to a copolymer resin containing acrylonitrile / styrene as a component, and the ABS resin generally refers to a copolymer resin containing acrylonitrile / styrene / butadiene as a component. May be contained. The mixing ratio of these components is not particularly limited. These are AS
It is common to use the resin alone or the ABS resin alone, but it can also be used as a mixture, copolymer, or polymer alloy with other resins as described below.

Other resins that can be mixed or copolymerized include polyester resins such as polybutylene terephthalate (PBT) resin, engineering plastics such as polycarbonate (PC), polyamide (PA) resin, vinyl chloride resin, and olefin resin. And the like.

Particularly preferred are polymer alloys of ABS resin and polycarbonate (PC) resin, AB
It is a polymer alloy of S resin and polybutylene terephthalate (PBT) resin, and a polymer alloy of ABS resin and polyamide (PA) resin. These can be easily mixed or dispersed with the ABS resin and can be uniformly mixed or dispersed. Also, by using a polymer alloy,
The physical strength of the molded article can be further improved.

In addition, it is possible to include fillers, coloring agents, etc. in a range where the total weight other than the main components is 49% or less.

As the filler, an inorganic powder filler such as silica or talc, or a fibrous filler such as glass fiber, carbon fiber or metal fiber such as stainless steel can be used. However, these fillers are used to increase the physical strength of the molded product, but work in a direction that makes the melt flow worse (decrease), so that wrinkles are formed in the simultaneous decorative decorating method. It is preferable to keep the amount as small as possible for generation.

The melt flow rate of these resins is preferably from 0.1 to 100. Melt flow rate (MFR) is also referred to as melt index (MI) and is an index of the ease of resin flow. When it is in a molten state in a mold, it can be determined that the larger the value, the easier the flow.

The melt flow rate is determined according to JIS K721.
It can be measured by the melt flow rate test method specified by 0 and expresses the amount of resin extruded from the orifice at a constant temperature and pressure by using an extrusion type plastometer in terms of grams per 10 minutes. , G
It is a numerical value indicated in units of / 10 min.

In general, a resin having a low melt flow rate has a poor fluidity, and when used in a simultaneous molding and decorating method, the resin is easily stretched due to a high temperature due to the high temperature. As a result, the decorative sheet is elongated by friction, and the decorative sheet tends to be excessively wrinkled at the end face of the mold.

Here, the gate diameter of the mold is a (mm), A
When the melt flow rate of the resin containing S resin or ABS resin as a main component is b (g / 10 min), 0.1
It is important that the relationship of ≦ b / a ≦ 150 holds.
That is, when the high-temperature molten resin is injected and filled into the cavity, the decorative sheet mounted in the molding die may be wrinkled or damaged. I found that it depends on ease. In particular, when a resin mainly composed of an AS resin or an ABS resin is melted in a cylinder and is injected at a temperature of 190 to 260 ° C., the flow rate at which the molten resin is injected depends on the gate diameter, and It has been found that the flow rate depends on the ease of flow of the resin flowing in the cavity.

More specifically, the gate diameter a (m
m), A at 220 ° C. and a nominal load of 10 kg according to a melt flow rate test method specified in JIS K7210.
When the melt flow rate b (g / 10 min) of the resin containing S resin or ABS resin as a main component satisfies the above relationship, the decorative sheet does not wrinkle or be damaged by the pressure or heat of the molten resin. Becomes b / a
If the ratio is less than 0.1, the flow of the molten resin is deteriorated, and if a high pressure is applied, the decorative sheet may be wrinkled or damaged. If b / a exceeds 150, the decorative sheet may be wrinkled or melted due to the heat of the molten resin.

In particular, when the gate is a pinpoint gate, it is preferable that 0.1 ≦ b / a ≦ 125. If b / a is less than 0.1, the flow of the molten resin becomes worse, and if a high pressure is applied, the decorative sheet is damaged. When b / a exceeds 125,
There is a disadvantage that the decorative sheet is melted by the calorific value of the molten resin.

In general, it is preferable that the distance between the decorative sheet and the gate is not close to the decorative sheet.

Further, the temperature of the molten resin mainly composed of the AS resin or the ABS resin is preferably 190 to 260 ° C. If the temperature of the molten resin is lower than 190 ° C., the flow of the molten resin is deteriorated, and there is a possibility that a short-circuit may occur in the molded product or the decorative sheet may have poor adhesion.
If the temperature of the molten resin exceeds 260 ° C., the resin may be burnt and the molded product may be colored, or carbonized, and the resin residue may remain in the cylinder. Further, the decorative sheet may be melted. The molten resin is melted in the cylinder, and is generally in a state higher by about 10 to 40 ° C. than the temperature indicated by the nozzle of the injection molding machine. When the molten resin is injected into the mold through the nozzle, 10 to 4
It is considered that there is a temperature drop of about 0 ° C. Therefore,
The nozzle indicated temperature of the injection molding machine may be regarded as indicating the molten resin temperature immediately before the injection.

As the decorative sheet, a transfer material or an insert material can be used.

The transfer material is such that a transfer layer composed of a release layer, a design layer, an adhesive layer and the like is provided on a base sheet.

As the material of the base sheet, it is used as a base sheet of an ordinary transfer material such as a resin sheet of polypropylene resin, polyethylene resin, polyamide resin, polyester resin, acrylic resin, polyvinyl chloride resin and the like. Things can be used. When the surface of the base sheet has fine irregularities, the irregularities are transferred to the transfer layer, so that the surface shape such as matting or hair alignment can be expressed.

When the transfer layer has good releasability from the base sheet, the transfer layer may be provided directly on the base sheet. In order to improve the releasability of the transfer layer from the base sheet, a release layer may be formed over the entire surface before providing the transfer layer on the base sheet.

The release layer is formed entirely on the base sheet or the release layer. The release layer is a layer that is peeled from the base sheet or the release layer and becomes the outermost surface of the transferred object when the base sheet is peeled off after the simultaneous transfer of molding. Examples of the material of the release layer include acrylic resin, polyester resin, polyvinyl chloride resin, cellulose resin, rubber resin, polyurethane resin, polyvinyl acetate resin, and the like, as well as vinyl chloride-vinyl acetate copolymer. It is preferable to use a resin or a copolymer such as an ethylene-vinyl acetate copolymer resin.
When the release layer requires hardness, a photocurable resin such as an ultraviolet curable resin, a radiation curable resin such as an electron beam curable resin, or a thermosetting resin may be selected and used. The release layer may be colored or uncolored. Examples of a method for forming the release layer include a gravure code method, a roll coating method, a coating method such as a comma coating method, and a printing method such as a gravure printing method and a screen printing method.

The design layer is formed on the release layer, usually as a printing layer. As a material of the printing layer, a resin such as a polyvinyl resin, a polyamide resin, a polyester resin, an acrylic resin, a polyurethane resin, a polyvinyl acetal resin, a polyester urethane resin, a cellulose ester resin, and an alkyd resin is used as a binder. ,
It is preferable to use a coloring ink containing a pigment or dye of an appropriate color as a coloring agent. As a method for forming the printing layer, a normal printing method such as an offset printing method, a gravure printing method, or a screen printing method may be used. The printing layer may be provided entirely or partially depending on the design to be expressed.

The design layer may be composed of a metal thin film layer or a combination of a printing layer and a metal thin film layer. The metal thin film layer is for expressing metallic luster as a design layer, and is formed by a vacuum deposition method, a sputtering method, an ion plating method, a plating method, or the like. Depending on the metallic gloss color you want to express, aluminum,
Metals such as nickel, gold, platinum, chromium, iron, copper, tin, indium, silver, titanium, lead, and zinc, and alloys or compounds thereof are used. The metal thin film layer may be partially formed. When providing the metal thin film layer, a front anchor layer or a rear anchor layer may be provided in order to improve the adhesion between another transfer layer and the metal thin film layer.

The adhesive layer is for bonding each of the above-mentioned layers on the object to be transferred. AS resin or AB as the adhesive layer
A heat-sensitive or pressure-sensitive resin suitable for a resin containing S resin as a main component is appropriately used. For example, acrylic resin,
It is preferable to use an ABS resin, an AS resin, a vinyl resin, a polyester resin, an epoxy resin, or the like. Examples of a method for forming the adhesive layer include a coating method such as a gravure coating method, a roll coating method, and a comma coating method, and a printing method such as a gravure printing method and a screen printing method. Further, it is also possible to form an adhesive layer by laminating an adhesive sheet made of the above material by a laminating method or the like.

In particular, as the resin used as the adhesive layer,
It is made of a thermoplastic resin containing an AS resin or an ABS resin as a main component, and has a softening point defined by ASTM D648 of 5
It is preferably from 0 to 140 ° C. When such a resin is used, the adhesive strength with an AS resin or an ABS resin as a main component, which is a molding resin, becomes high.

The structure of the transfer layer is not limited to the above-described embodiment. For example, when a material having excellent adhesiveness to the transfer object is used as the material of the design layer, the adhesive layer is omitted. be able to. If the design layer requires concealment, a concealment layer may be provided. The concealing layer may be formed in the same manner as the design layer.

Next, a method of decorating the surface of a resin molded product as an object to be transferred by using the above-described transfer material and by using a simultaneous molding transfer method by injection molding will be described.

First, a transfer material is fed into a molding die composed of a movable die and a fixed die. At this time, the sheet transfer material may be fed one by one, or a necessary portion of a long transfer material may be sent intermittently. When a long transfer material is used, it is preferable to use a feeder having a positioning mechanism so that the register between the design layer of the transfer material and the molding die coincides with each other. In addition, when the transfer material is intermittently fed, if the transfer material is fixed by the movable type and the fixed type after the position of the transfer material is detected by the sensor, the transfer material can always be fixed at the same position. This is convenient because no misalignment of the design layer occurs.

After the molding die is closed, a molten resin is injected and filled into the die from a gate provided on the fixed die, and a transfer material is adhered to the surface of the transferred material while forming the transferred material.

After cooling the resin molded article as the transfer object,
Open the molding die and take out the resin molded product. Finally, the base sheet of the transfer material is peeled off. In this way, by transferring only the transfer layer to the surface of the molded article, a simultaneously decorated decorative molded article can be obtained.

In order to obtain an insert material, the following method may be used.

The insert material has at least a design layer on a base sheet. As the base sheet, the same sheet as that of the transfer material may be used. Further, it is preferable to use the same pattern layer as that of the transfer material. Also,
The same adhesive layer as that of the transfer material may be used.
Therefore, the insert material differs from the transfer material in that it does not have a release layer.

As described above, the insert material can be obtained. Next, a method of using the insert material will be described.

The insert material is placed between the core mold having the gate and the cavity mold having the concave portion using an insert material feeding device or the like, and is fixed in or around the cavity mold by means such as a clamp. When the molding shape is deep drawing, the insert material may be heated and softened by a heat source, and may be closely attached to the surface of the cavity mold by vacuum suction from the cavity mold side. The cavity mold and the core mold are clamped to form a closed space between the insert material and the core mold. The molten resin is injected into this space. As the molten resin, the same resin as that when the transfer material is used may be used.
If the cavity mold and the core mold are opened, a molded product in which the insert material and the molding resin are integrated can be obtained.

Further, insert molding can be performed as follows. First, the insert material is fixed to a preforming mold having a concave portion for deep drawing by means of a clamp or the like, and then the insert material is heated and softened by a heat source and vacuum-sucked from the preforming mold side to form a preforming mold. Adhere to the surface. Next, the vacuum suction is released, and the insert material is taken out of the preforming mold. In this way, a deep drawn insert material can be obtained. Next, the preformed insert material is placed between a core mold having a gate and a cavity mold having a concave portion for deep drawing, and is fixed in or around the cavity mold by means such as a clamp. Next, the cavity mold and the core mold are clamped to form a closed space between the insert material and the core mold. If the molten resin is injected into this space and the cavity mold and the core mold are opened, the insert material and the molding resin can be integrated.

[0058]

(Example 1) A polyethylene terephthalate film having a thickness of 0.08 mm was used as a base sheet, and a transparent window was formed in the center of the base sheet using a strong adhesive ink. A pattern layer is formed by a gravure printing method in eight colors so as to have a pattern consisting of a pattern and a character, and an adhesive for bonding to an ABS resin is formed as a bonding layer by a gravure printing method, and a thickness of 0.1 mm
Was obtained as a decorative sheet.

The decorative sheet was sandwiched in a sleep-rate type mold for producing a nameplate, and insert molding was performed. As the gate, a gate having a circular pinpoint gate with a diameter of 0.8 mm on the back surface of the panel was used (a
= 0.8).

In the injection molding step, a transparent ABS resin (Toyolac 920, manufactured by Toray Industries, Inc.) melted at 240 ° C. in a cylinder was injected into a mold through a gate to obtain a simultaneously decorated molded product. JIS K of ABS resin used here
The melt flow rate b at a test temperature of 220 ° C. and a nominal load of 10 kg according to the melt flow rate test method specified in 7210 was 25 g / 10 min (b = 2).
5).

In this case, b / a = 31.25.
In the simultaneously molded decorative product thus obtained, the decorative sheet did not wrinkle, and the adhesive layer and the design layer were not damaged and the design did not collapse.

As a comparative example, a simultaneously decorated and molded product was obtained in the same manner as in Example 1 except that an ABS resin to which glass fiber was added for the purpose of imparting rigidity was used. The melt flow rate b of the ABS resin containing glass fiber is 0.0
It was 6 g / 10 min (b = 0.06).

In this case, b / a was 0.075.
The molded simultaneous decorative molded product obtained in this manner was not sufficiently filled with the resin, and the resin could be filled into the product shape by increasing the injection pressure, but wrinkles occurred in the decorative sheet,
In addition, the adhesive layer and the design layer of the decorative sheet were damaged, and the design collapsed.

(Example 2) An acrylic film (HBXN47 manufactured by Mitsubishi Rayon Co., Ltd.) having a thickness of 0.125 mm was used as a base sheet, and a metallic pattern layer was gravure on the base sheet using an ink in which an aluminum paste was dispersed. It is formed by a printing method, then a solid pattern layer is formed by a gravure printing method, a black ABS film having a thickness of 0.1 mm is bonded as an adhesive layer, and an insert material having a metallic pattern is obtained and decorated. Sheet.

The decorative sheet was preformed, and unnecessary peripheral parts were trimmed and removed. Then, the decorative sheet was inserted into a sleep-rate type mold, and molten ABS resin was injected to perform insert molding. As the gate, two pinpoint gates having a diameter of 0.5 mm were provided (a = 0.5). ABS resin used (Estyrene 3 manufactured by Nippon Steel Chemical Co., Ltd.)
20H) had a melt flow rate b of 70 g / min (b = 70).

In this case, b / a = 140. In the simultaneously molded decorative product thus obtained, the decorative sheet did not wrinkle, and the adhesive layer and the design layer were not damaged and the design did not collapse.

As a comparative example, a simultaneously molded decorative product was obtained in the same manner as in Example 2 except that the gate diameter was changed to 0.45 mm (a = 0.45).

In this case, b / a ≒ 155.6.
The resin molded simultaneously obtained in this way was not sufficiently filled with resin, and the resin could be filled into the product shape by increasing the injection pressure, but the adhesive layer and design layer of the decorative sheet were damaged. Happened and the design collapsed.

Example 3 A simultaneously decorated and molded product was obtained in the same manner as in Example 1 except that an AS resin (Sanlex S90 manufactured by Techno Polymer Co., Ltd.) was used as the molten resin. The melt flow rate b of the AS resin is 6.0 g / 1.
0 min (b = 6.0).

In this case, b / a = 7.5. In the simultaneously molded decorative product thus obtained, the decorative sheet did not wrinkle, and the adhesive layer and the design layer were not damaged and the design did not collapse.

As a comparative example, the gate was 1.5 mm × 70
Example 3 except that a side gate having a rectangular shape of mm was used.
In the same manner as described above, a simultaneously decorated decorative molded product was obtained (a ≒ 70.0
16).

In this case, b / a = 0.0857. The thus obtained simultaneously decorated decorative molded article had wrinkles in the decorative sheet.

[0073]

Since the present invention has the above-described structure, it has the following effects.

In the method for producing a simultaneously-decorated molded article according to the present invention, a decorative sheet is placed in a mold having a cavity,
In the method for manufacturing a simultaneously decorated molded article, a molten resin mainly composed of an AS resin or an ABS resin is injected into a mold to obtain a molded article in which the decorative sheet and the resin are integrated. Is a (mm), and the melt flow rate of a resin mainly composed of an AS resin or an ABS resin at a test temperature of 220 ° C. and a nominal load of 10 kg in a melt flow rate test method specified in JIS K7210 is b (g / 10 m
In), the relationship of 0.1 ≦ b / a ≦ 150 is satisfied, so that the resin is sufficiently filled in the cavity, and the decorating sheet has an excellent appearance that has an excellent appearance without wrinkling or damage. A decorative molded product can be easily obtained.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) (C08L 55/02 (C08L 55/02 67:02) 67:02) (C08L 55/02 (C08L 55 / 02 77:00) 77:00) B29K 25:00 B29K 25:00 67:00 67:00 69:00 69:00 77:00 77:00 105: 20 105: 20 B29L 9:00 B29L 9:00

Claims (6)

[Claims] 1. A decorative sheet is placed in a mold having a cavity, a molten resin mainly composed of an AS resin or an ABS resin is injected into the mold, and the decorative sheet and the resin are integrally formed. In the method for producing a simultaneously molded decorative product, the gate diameter of the mold is set to a (mm) and the Japanese Industrial Standard (JI
S) AS at a test temperature of 220 ° C. and a nominal load of 10 kg in the melt flow rate test method specified in K7210
When the melt flow rate of the resin or resin containing ABS resin as a main component is b (g / 10 min), 0.1 ≦
A method for producing a simultaneously decorated decorative molded product, wherein a relationship of b / a ≦ 150 is satisfied. 2. A resin containing ABS resin as a main component is AB resin.
At least one of S resin alone, a polymer alloy of ABS resin and polycarbonate (PC) resin, a polymer alloy of ABS resin and polybutylene terephthalate (PBT) resin, and a polymer alloy of ABS resin and polyamide (PA) resin. Item 4. The method for producing a simultaneously decorated decorative molded article according to Item 1. 3. The method according to claim 1, wherein the gate is a pinpoint gate. 4. The temperature of a molten resin containing an AS resin or an ABS resin as a main component is 190 to 260 ° C.
4. The method for producing a simultaneously decorated decorative molded product according to any one of items 1 to 3. 5. The method according to claim 1, wherein the decorative sheet is a transfer material or an insert material. 6. A decorative sheet having an adhesive layer, wherein a resin constituting the adhesive layer is made of a thermoplastic resin containing an AS resin or an ABS resin as a main component.
The method for producing a simultaneously decorated decorative molded product according to any one of claims 1 to 5, wherein the softening point specified in 648 is 50 to 140 ° C.