JP3528864B2 - Pattern-enclosed molded product - Google Patents

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 synthetic resin molded product in which characters, marks and other patterns are formed, and in particular a molded product in which characters, marks and other patterns are enclosed and a molded product thereof. The present invention relates to a molding method.

[0002]

2. Description of the Related Art Conventionally, as a method of forming a pattern on a synthetic resin molded product, after the molded product is manufactured, a pattern is formed by printing, hot stamping or the like, or a sheet or film with a pattern (hereinafter, simply (Sometimes referred to as a sheet) was attached to a mold, and a thermoplastic resin was injection-integrated. The method of forming a pattern after manufacturing a molded product has two steps, and it is difficult to form a shape of the molded product, particularly a pattern having a sharp contour on a surface such as a lens cut pattern. In addition, since characters, marks, and other patterns cannot be enclosed, and the pattern forming portion is exposed on the surface, the surface is rubbed during actual use, and characters, marks,
There is also a problem that the other pattern forming portions are peeled off.

In the latter method, a paper, a polycarbonate sheet or the like having a pattern formed thereon is inserted so that the pattern surface faces the mold side (the surface opposite to the integrated surface) and the thermoplastic resin is injected and integrated. The method could be implemented without any problems.
However, using a sheet with a pattern formed on the integrated surface side,
When it is necessary to inject and integrate a thermoplastic resin such as MMA or aromatic polycarbonate to enclose the pattern surface, the adhesion between the pattern forming surface and the injection molding molding material is weak and good pattern encapsulation. There was a problem that a molded product could not be obtained.

As a method of improving the adhesive force between the pattern forming surface and the molding material, a pattern such as letters, marks or the like as shown in FIG. There is a method of improving the adhesive force by providing a portion that contacts and welds. Further, when the pattern forming surface as shown in FIG. 2 is formed up to the end of the molded product, a portion where the pattern is not formed is formed on the outer peripheral portion of the end, and a bonding margin between the sheet and the molding material is provided. There is.

However, in these methods, the adhesive strength is not sufficient, the outlines of characters, marks and other patterns are blurred, the shape is restricted, and the backlight of the instrument panel of an automobile or the front panel of an audio product is used. For products that receive (the pattern or letters printed when viewed from the front with light coming from behind the product appear bright),
There was no light hiding property, and there was the problem of causing light leakage.

[0006]

DISCLOSURE OF THE INVENTION The present invention relates to a synthetic resin molded article having characters, marks and other patterns formed thereon,
In particular, regarding a molded product in which characters, marks, and other patterns are encapsulated and a molding method thereof, it is possible to provide a pattern-encapsulated molded product and a molding method thereof that enhance the adhesive force between a pattern forming surface and a molding material that is injection-integrated. is there.

[0007]

DISCLOSURE OF THE INVENTION The present inventors have developed a pattern-encapsulated molded article which enhances the adhesive force between a pattern-forming surface of a molded article in which characters, marks and other patterns are encapsulated and a molding material which is injection-integrated. And as a result of repeated studies on its molding method, saturated thermoplastic polyester resin was mixed with printing ink.
Formed by printed machining, by using a printing thermoplastic synthetic resin sheet, it can solve the above problems,
The present invention has been completed .

That is, the present invention is directed to printing ink on the surface.
Transparent or translucent thermoplastic formed by
The non-printed surface of the synthetic resin sheet or film is cavitated.
(2) Mount it on the mold so that it faces the wall and melt it.
Injection of thermoplastic synthetic resin onto the sheet or film
A pattern-encapsulated molded product formed integrally with the printing ink
Printed in containing saturated thermoplastic polyester resin
The present invention relates to a pattern-encapsulated molded article, which is characterized in that

The present invention will be described below. As a transparent or translucent thermoplastic synthetic resin sheet to be used,
Polycarbonate resin, polymethylmethacrylate (P
MMA), acrylonitrile-styrene copolymer (AS
Resin), polystyrene, acetyl cellulose, and other thermoplastic resin sheets can be used, but aromatic polycarbonate having excellent impact resistance (hereinafter sometimes referred to as PC)
Is preferred.

The PC is a divalent phenolic compound exemplified by 2,2-bis (4-hydroxyphenyl) -propane and 2,2-bis (3,5-dibromo-4-hydroxyphenyl) -propane. A polymer obtained by a known method from one or more of the above and a carbonate precursor exemplified by phosgene can be exemplified. As the sheet thickness,
By selecting a sheet of 0.1 mm to 1.0 mm, the product surface appearance and moldability are improved. When a sheet of less than 0.1 mm is used, wrinkles easily occur on the sheet surface of the final filling portion due to the flow pressure of the injection resin, and
If it exceeds m, it may be difficult to process the sheet into an appropriate shape.

In the present invention, it is necessary to form characters, marks and other patterns on the thermoplastic synthetic resin sheet,
Examples of the pattern forming method include painting, hot stamping, printing and the like, and the pattern forming method by printing is particularly preferable. As the printing method, gravure printing, flat plate printing, flexographic printing, dry offset printing, pad printing, screen printing, etc. are selected according to the purpose of printing and the shape of the product, and as a printing method for the thermoplastic synthetic resin sheet, Screen printing is preferred.

As the composition of the printing ink used in the printing process, an oil type and a resin type can be used as the main components, and the resin type can be divided into natural resin and synthetic resin. As the natural resin, rosin, gilsonite, Examples include shellac and copearl. Synthetic resin type includes phenol type and its derivatives, amino type resin, butylated urea, melamine resin, polyester type alkyd resin, styrene resin, acrylic resin, phenol resin, epoxy resin, polyamide resin, vinyl chloride resin, vinyl acetate resin. , Vinyl chloride-vinyl acetate copolymer, butyral resin, methyl cellulose resin, ethyl cellulose resin, cellulose acetate resin, nitrocellulose resin, and urethane resin are exemplified, and each is adjusted to a desired color by a dye or a pigment.

As the saturated thermoplastic polyester resin used in the present invention, an amorphous saturated thermoplastic polyester resin having a softening point selected in the range of 80 ° C. to 180 ° C. and having solubility in a solvent is used. desirable. The method for producing a saturated thermoplastic polyester resin is a copolyester obtained by copolymerization with a polyvalent carboxylic acid and a polyhydric alcohol, and as the polyvalent carboxylic acid, terephthalic acid, isophthalic acid, orthophthalic acid, 2, 6-naphthalenedicarboxylic acid, paraphenylenedicarboxylic acid, 1,
Examples thereof include 4-cyclohexanedicarboxylic acid, succinic acid, glutaric acid, adipic acid, suberic acid, azelaic acid, sebacic acid, dodecanedioic acid, trimellitic acid, pyromellitic acid, and sodium sulfoisophthalate.

As the polyhydric alcohol, ethylene glycol, 1,2-propylene glycol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, neopentyl glycol, diethylene glycol, triethylene glycol, Examples thereof include polyethylene glycol, polytetramethylene glycol, 1,4-cyclohexanedimethanol, trimethylolpropane, pentaerythritol, and an ethylene oxide adduct of bisphenol A. These monomers can be combined to produce a copolyester having physical properties suitable for the intended use.

In the present invention, the adhesive force between the molding material that is injection-integrated with the pattern forming surface by printing or the like is required.
The printing ink used for forming a pattern by printing process by the addition of saturated thermoplastic polyester resin, it is possible to obtain a bonding strength of interest.

Printing processing is performed with printing ink mixed with saturated polyester resin on the surface on which characters, marks and other patterns are formed.
The thermoplastic synthetic resin sheet thus obtained is obtained as follows. First, the thermoplastic synthetic resin sheet is molded to a predetermined thickness by an extrusion molding method or the like. Usually, a thermoplastic synthetic resin that is heated and melted is extruded in a flat plate shape from a die placed at right angles to the extruder, giving gloss with a polishing roll,
The product is cooled, trimmed, and cut into a predetermined size to obtain a product.

Next, this thermoplastic synthetic resin sheet is
Surface treatment such as washing or cleaning is performed. The printing ink to form a pattern of Nozomu Tokoro, methyl ethyl ketone, and mixed solvents saturated thermoplastic polyester dissolved in isophorone and the like, can be obtained adhesion strength of interest by screen printing.

The sheet thus obtained is punched into a desired shape of the molded product. This punched piece is obtained by a punching device. Next, the sheet is mounted in the cavity of the injection-molding die in order to integrally integrate the thermoplastic synthetic resin on the pattern forming surface of the sheet.

The thermoplastic synthetic resin used for injection integration may be any transparent or opaque thermoplastic resin and is not particularly limited, but from the viewpoint of improving the performance of the molded article of the present invention. Therefore, a transparent thermoplastic resin is preferable. Specifically, polycarbonate, polysulfone, non-crystalline polyester, polycarbonate / non-crystalline polyester composition, polycarbonate / styrene-maleic acid copolymer composition, polycarbonate / styrene-maleimide copolymer composition, poly Acrylic resin such as methyl methacrylate, polystyrene, styrene-acrylonitrile copolymer, styrene-methylmethacrylic acid copolymer, styrene-maleic acid copolymer,
Examples thereof include a styrene-maleimide copolymer, polyvinyl chloride, poly-4-methylpentene-1, a polyphenylene ether-polystyrene composition, and polyarylate.

The thermoplastic synthetic resin sheet may be mounted by punching holes in the gate and tab portions of the sheet obtained by punching into a die cavity shape with a press machine, and then fixing the sheet to a pin provided on the die. Or, attach a piece of iron to the sheet tab part and mount it by a known method of embedding a magnet in the mold part at the same position and mount it, or mount a sheet shaped in advance by vacuum molding etc. in the mold cavity shape and mold I do.

The manufacturing method of the present invention will be described in detail with reference to FIG. FIG. 3 is a schematic view showing a cross section of a mold used in the present invention. The moving side mold 2 of the mold 1 as shown in FIG. 3 attached to the injection molding machine for forming the pattern-encapsulated molded product is opened, and the polycarbonate sheet punching piece 6 is mounted in the cavity portion 4. This punched piece 6
Is disposed on the cavity surface side 5 so that the pattern forming surface 9 is located on the inner surface of the synthetic resin molded product as the final product which is sealed with the injection-integrated thermoplastic synthetic resin. The punched piece 6 thus arranged is held on the predetermined cavity surface by a known method, and the moving die 2 is closed. Then, the thermoplastic synthetic resin, polycarbonate resin (PC) 7, which has been melted into the cavity portion 4 is high-pressure injected from the injection molding machine nozzle 8 so that the pattern forming surface 9 of the punched piece 6 becomes the inner surface of the final molded product. It

The PC 7 injected at high pressure is injected into the cavity 4 through the sprue 11. The molten resin 7 that has entered the cavity portion 4 is cooled immediately as soon as it directly contacts the cavity surface or indirectly through the punched piece 6 and forms the solidified layer skins 13 and 14. The fluidized melted layer 12 that has not been cooled flows inside the already formed solidified layers 13 and 14 further forward of the existing solidified layers due to the injection pressure. Similarly, the fluidized and molten layer 12 that has flowed forward, that is, the molten PC, is cooled directly as soon as it directly contacts the cavity surface or indirectly through the punched piece 6 to form a solidified layer.

Molten resin 7 injected into the cavity 4
Is injected while forming the solidified skin layers 13 and 14 on the cavity surface or the contact surface with the punched piece. As a result, the PC sheet of the punched piece 6 is instantly shaped by the molten resin PC in the cavity portion 4 along the cavity surface without being displaced from the original mounting position.

On the other hand, the pattern forming surface 9 on the punched piece 6 of the PC sheet is melted at the interface 10 by the heat of the PC 7. Between the pattern formation surface 9 on the molten PC7 and PC sheets punched piece 6, the saturated thermoplastic polyester resin which is mixed into the pattern forming film, both adhered via the interface 10. Therefore, the PC sheet punched piece and the molten PC of thermoplastic synthetic resin are completely integrated at the interface 10.

After cooling, the synthetic resin molded product is taken out of the mold 1. Since the molded product is a product in which the desired pattern forming surface is completely covered with the PC sheet, no further post-process is required. The punched piece may be placed in the mold cavity so that the non-pattern forming surface of the PC sheet is located on both the outermost surface and the innermost surface of the final molded product. In this case, both the outer surface and the inner surface of the final molded product are covered with the PC sheet.
As a molding device for molding a molded product, a known injection molding machine and a metal mold may be prepared, and no special auxiliary equipment is required.

Further, by mixing an additive such as a coloring agent or an ultraviolet absorber in the PC sheet in advance, the synthetic resin molded article can be colored in a desired color without mixing such an additive in the molten resin material. It can be made to have or have an ultraviolet absorbing ability.

At least one kind of performance of scratch resistance, antistatic performance, antifogging performance and weather resistance can be imparted to the non-pattern forming surface of the sheet to be used. The addition of these functions is described in, for example, JP-A-60-250927.
JP-A-60-253518, JP-A-60-523
As described in Japanese Patent Application Laid-Open No. 516 and Japanese Patent Application Laid-Open No. 60-253518, P coated with a film excellent in scratch resistance, antistatic performance, antifogging performance, and weather resistance on one side.
This can be done by mounting the C sheet on the mold and then injecting the molding material into the mold.

The present invention will be specifically described below with reference to examples. Reference Example 1 A mold having a thickness of 3 mm and a diameter of 100 mm shown in FIG.
A disk mold having a cavity 4 of φ was used. First, a PC sheet with a sheet thickness of 0.5 mm (Mitsubishi Gas Chemical Co., Inc.)
Manufactured by trade name: Iupilon sheet CFI-NFU) using a printing ink (manufactured by Jujo Chemicals Co., Ltd., trade name: HIPET ink # 9390) and screen printed.
Drying was carried out at 0 ° C. for 30 minutes.

Then, on the surface on which the printed film is formed,
A saturated polyester resin (manufactured by Toyobo Co., Ltd., trade name: Byron 200) was dissolved in methyl ethyl ketone, screen printed, and dried at 100 ° C. for 5 minutes. The sheet 6 obtained by laminating the saturated polyester resin on the printed film thus obtained was cut into a cavity shape by a press machine, and then mounted on a mold so that the non-printed surface faces the mold surface. Next, PC resin material 7 (trade name: Iupilon S-3000 manufactured by Mitsubishi Gas Chemical Co., Inc.) was used at a resin temperature of 280 ° C., a mold temperature of 60 ° C., and an injection pressure (gauge pressure:
Injection molding was carried out under the condition of 500 kgf / cm ² ) to obtain a disk-shaped molded product 15 shown in FIG.

The injection molding machine used is Mitsubishi Heavy Industries, Ltd.
Manufactured, model: 150 MST was used. The sheet in which the molding material and the saturated polyester resin were laminated on the printed film was integrated by the heat and pressure of the molding to obtain a laminated molded product in which the printed pattern was enclosed. To measure the adhesive force between the sheet and the molding material of the molded product thus obtained, 1 cm
The peeling strength was measured at a width of 90 degrees. Also,
In order to confirm the environment resistance, the obtained molded product is -20 ℃
After 10 cycles of treatment at a temperature of 80 ° C., the peeling state between the printed pattern portion and the molding material and the adhesive strength were measured, and the peeling strength was measured at an angle of 90 degrees with a width of 1 cm. The results of each test are shown in Table 1.

Example 1 A mold having a thickness of 3 mm and a diameter of 100 mm shown in FIG.
A disk mold having a cavity 4 of φ was used. First, printing ink (manufactured by Jujo Kako Co., Ltd., trade name: HIPET ink # 9390) and saturated polyester resin (Toyobo Co., Ltd.)
A product prepared by dissolving Vylon 200) manufactured by Mfg. Co., Ltd. in methyl ethyl ketone is mixed at a mixing ratio of 3: 1 (printing ink: weight ratio of solution). Then, sheet thickness 0.5
mm of a PC sheet (Mitsubishi Gas Chemical Co., Ltd., trade name: Iupilon sheet CFI-NFU) was screen printed using the above printing ink and dried at 100 ° C. for 30 minutes. The printing sheet 6 thus obtained, in which the saturated polyester resin was mixed in the printing ink, was cut into a cavity shape by a press machine and then mounted on a mold so that the non-printing surface faces the mold surface. Next, PC resin material 7 (manufactured by Mitsubishi Gas Chemical Co., Inc., trade name: Iupilon S-300)
0) was injected and injected under the conditions of a resin temperature of 280 ° C., a mold temperature of 60 ° C., and an injection pressure (gauge pressure: 500 kgf / cm ² ) to obtain a disk-shaped molded product 16 shown in FIG.

The injection molding machine used is Mitsubishi Heavy Industries, Ltd.
Manufactured, model: 150 MST was used. The printed sheet obtained by mixing the molding material and the saturated polyester resin in the printing ink was integrated by the heat and pressure of the molding to obtain a laminated molded product in which the printed pattern was enclosed. In order to measure the adhesive force between the sheet and the molding material of the molded product thus obtained,
The peeling strength was measured at a width of 1 cm and an angle of 90 degrees.
In addition, in order to confirm the environment resistance, the obtained molded product is -2.
After 10 cycles of treatment at a temperature of 0 ° C to 80 ° C, the peeling condition between the printed pattern portion and the molding material and the measurement of the adhesive strength are 1 cm.
The peeling strength was measured at a width of 90 degrees. The results of each test are shown in Table 1.

Example 2 A mold having a thickness of 3 mm and a diameter of 100 mm shown in FIG.
A disk mold having a cavity 4 of φ was used. First, a PC sheet with a sheet thickness of 0.5 mm (Mitsubishi Gas Chemical Co., Inc.)
Manufactured by trade name: Iupilon sheet CFI-NFU) using a printing ink (manufactured by Jujo Chemicals Co., Ltd., trade name: HIPET ink # 9390) and screen printed.
Drying was carried out at 0 ° C. for 30 minutes. Next, transparent printing ink (manufactured by Jujo Kako Co., Ltd., trade name: HIPET ink # 93)
A solution obtained by dissolving saturated polyester resin (manufactured by Toyobo Co., Ltd., trade name: Byron 200) in 00 medium with methyl ethyl ketone was mixed at a ratio of 3: 1 (printing ink:
(Weight ratio of the solution).

Then, the above-mentioned transparent printing ink was screen-printed on the surface of the PC sheet on which the printing film was formed, and dried at 100 ° C. for 30 minutes. The PC sheet 6 thus obtained was cut into a cavity shape by a press machine and then mounted on a mold so that the non-printing surface faces the mold surface. Next, PC resin material 7 (Mitsubishi Gas Chemical Co., Inc.)
Made by trade name: Iupilon S-3000) with a resin temperature of 28
0 ℃, mold temperature 60 ℃, injection pressure (gauge pressure: 500
Injection was performed under the condition of kgf / cm ² ) to obtain a disk-shaped molded product 17 shown in FIG.

The injection molding machine used is Mitsubishi Heavy Industries, Ltd.
Manufactured, model: 150 MST was used. The sheet in which the molding material and the printed film were laminated was integrated by the heat and pressure of the molding to obtain a laminated molded product in which the printed pattern was enclosed. In order to measure the adhesive force between the sheet and the molding material of the thus obtained molded product, the peeling strength was measured at a width of 1 cm and an angle of 90 degrees. Also, in order to confirm the environment resistance,
The obtained molded product was subjected to 10 cycles of treatment at a temperature of -20 ° C to 80 ° C to measure the peeling condition between the printed pattern part and the molding material and the adhesive strength, and the peeling strength was measured at an angle of 90 ° with a 1 cm width. did. The results of each test are shown in Table 1.

Comparative Example 1 A mold having a thickness of 3 mm and a diameter of 100 mm shown in FIG.
A disk mold having a cavity 4 of φ was used. First, a PC sheet with a sheet thickness of 0.5 mm (Mitsubishi Gas Chemical Co., Inc.)
Manufactured by trade name: Iupilon sheet CFI-NFU) using a printing ink (manufactured by Jujo Chemicals Co., Ltd., trade name: HIPET ink # 9390) and screen printed.
Drying was carried out at 0 ° C. for 30 minutes. The sheet 6 on which the printed films were laminated thus obtained was cut into a cavity shape by a press machine, and then mounted on a mold so that the non-printed surface faces the mold surface. Next, PC resin material 7 (trade name: Iupilon S-3000 manufactured by Mitsubishi Gas Chemical Co., Inc.) was used at a resin temperature of 280 ° C., a mold temperature of 60 ° C., and an injection pressure (gauge pressure:
Injection molding was carried out under the condition of 500 kgf / cm ² ) to obtain a disk-shaped molded product 18 shown in FIG. 7.

The injection molding machine used is Mitsubishi Heavy Industries, Ltd.
Manufactured, model: 150 MST was used. In order to measure the adhesive force between the sheet and the molding material of the thus obtained molded product, the peeling strength was measured at a width of 1 cm and an angle of 90 degrees. Further, in order to confirm the environmental resistance, the obtained molded product was subjected to 10 cycles of treatment at a temperature of −20 ° C. to 80 ° C., and the peeling state of the printed pattern portion and the molding material and the measurement of the adhesive strength were measured.
The peeling strength was measured at a width of cm and an angle of 90 degrees. The results of each test are shown in Table 1.

Comparative Example 2 A mold having a thickness of 3 mm and a diameter of 100 mm shown in FIG.
A disk mold having a cavity 4 of φ was used. First, a PC sheet with a sheet thickness of 0.5 mm (Mitsubishi Gas Chemical Co., Inc.)
Manufactured by trade name: Iupilon sheet CFI-NFU) using a printing ink (manufactured by Jujo Chemicals Co., Ltd., trade name: HIPET ink # 9390) and screen printed.
Drying was carried out at 0 ° C. for 30 minutes. Then, a transparent printing ink (manufactured by Jujo Kako Co., Ltd., trade name: HIPET ink # 9300 medium) was screen-printed on the surface of the PC sheet on which the printed film was formed, at 30 ° C. at 30 ° C.
Minute drying was performed. The PC sheet 6 thus obtained was cut into a cavity shape by a press machine and then mounted on a mold so that the non-printing surface faces the mold surface. Next, PC resin material 7 (manufactured by Mitsubishi Gas Chemical Co., Inc., trade name: Iupilon S-3000) was used for resin temperature 280 ° C, mold temperature 60 ° C,
Injection molding was carried out under the conditions of injection pressure (gauge pressure: 500 kgf / cm ² ) to obtain a disk-shaped molded product 19 shown in FIG.

The injection molding machine used is Mitsubishi Heavy Industries, Ltd.
Manufactured, model: 150 MST was used. In order to measure the adhesive force between the sheet and the molding material of the thus obtained molded product, the peeling strength was measured at a width of 1 cm and an angle of 90 degrees. Further, in order to confirm the environmental resistance, the obtained molded product was subjected to 10 cycles of treatment at a temperature of −20 ° C. to 80 ° C., and the peeling state of the printed pattern portion and the molding material and the measurement of the adhesive strength were measured.
The peeling strength was measured at a width of cm and an angle of 90 degrees. The results of each test are shown in Table 1.

Table 1 Reference Example 1 Example 1 Example 2 Comparative Example 1 Comparative Example 2 Initial adhesive strength (kgf / cm)> 8 ^* 2.5 3.2 0.3 0.4 Appearance after environmental test Good Good Good edge peeling Adhesive strength after edge peeling environmental test> 8 ^* 2.2 3.0 0.2 0.2 (kgf / cm) In Table 1, * indicates breakage of the sheet.

[0041]

【The invention's effect】

(1) It is possible to increase the adhesive strength between a molded article in which characters, marks and other patterns are enclosed and a molding material that is injection-integrated with the pattern forming surface in the molding method. (2) Since a design in which letters, marks, and other patterns are enclosed can be applied at the time of molding, it is possible to omit a post-process.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a molded product produced by a conventional method.

FIG. 2 is a schematic cross-sectional view showing a molded product manufactured by a conventional method.

FIG. 3 is a schematic view of a mold cross section for explaining a molding process of the present invention.

FIG. 4 is a schematic cross-sectional view of a molded product obtained in Reference Example 1.

FIG. 5 is a schematic sectional view of a molded product obtained in Example 1 of the present invention.

FIG. 6 is a schematic sectional view of a molded product obtained in Example 2 of the present invention.

FIG. 7 is a schematic cross-sectional view of the molded product obtained in Comparative Example 1.

FIG. 8 is a schematic sectional view of a molded product obtained in Comparative Example 2.

[Explanation of symbols] 1 mold 2 Moving mold 3 Fixed mold 4 cavity 5 Cavity surface 6 punched pieces 7 Molten resin 8 Injection molding means 9 Pattern film forming surface 10 Interface or polyester resin layer 11 sprues 12 Fluidized bed 13 Solidified skin layer 14 Solidified skin layer 15 Molded products 16 molded products 17 Molded products 18 molded products 19 molded products

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-4-191021 (JP, A) JP-A-3-254918 (JP, A) JP-A 63-15717 (JP, A) JP-A 63- 145024 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B29C 45/14-45/16 B29C 33/12-33/18 B29C 49/24 B32B 27 / 00,33 / 00

Claims (7)

(57) [Claims] 1. A transparent or translucent thermoplastic synthetic resin sheet or film having a pattern formed by printing ink on the surface thereof is mounted on a mold so that the non- printing surface faces the cavity wall. A pattern-encapsulated molded article in which a molten thermoplastic synthetic resin is injection-integrated onto the sheet or film, wherein the printing ink is a printing ink containing a saturated thermoplastic polyester resin Encapsulated molded product. 2. A method according to claim 1, wherein the pattern sealed moldings softening point of the saturated thermoplastic polyester resin is in the range from 80 ° C. to 180 ° C.. 3. A saturated heat claim 1, wherein the pattern sealed moldings thermoplastic polyester resin is a soluble non-crystalline saturated thermoplastic polyester resin in an organic solvent. 4. A thermoplastic synthetic resin sheet or film is a thermoplastic synthetic resin sheet or film in which claim 1 wherein the pattern sealed molded article having an ultraviolet-absorbing ability which is molded by adding a pre ultraviolet absorber. 5. A thermoplastic synthetic resin sheet or film is a thermoplastic resin sheet or film obtained by adding a colorant or dye according to claim 1, wherein pattern encapsulation molding. 6. A method for molding a pattern-encapsulated molded product, which is molded by using an injection molding machine, wherein printing is performed by using a printing ink in which a saturated thermoplastic polyester resin is mixed with a thermoplastic synthetic resin sheet or film. The resulting thermoplastic synthetic resin sheet or film is attached to the mold cavity so that the non- printing surface faces the cavity wall, and the molten thermoplastic synthetic resin is applied to the sheet. Alternatively, a method for forming a pattern-encapsulated molded article, which comprises performing integral injection molding on a film. 7. A thermoplastic synthetic resin sheet or film having at least one or more functional films having scratch resistance, weather resistance, antistatic performance, and antifogging performance on the non-printed surface, which is applied to the sheet. 7. The method for molding a pattern-encapsulated molded article according to claim 6, wherein the formed functional film is mounted so as to face the mold surface and is arranged such that the surface of the molded article becomes the functional film.