JPH08118409A - Decorating molded product, its manufacture and case for spectacles - Google Patents

Abstract

PURPOSE: To provide a decorating molded product wherein its surface is covered by synthetic leather and a decorative property and quality feeling are high, a manufacturing method wherein such the decorating molded product is manufactured by an in-mold molding method, and a case for spectacles which is high in the decorating property and quality feeling, and can be easily manufactured. CONSTITUTION: A female mold 12 wherein a notch part 25 is equipped to a parting surface 23 around a molded cavity 24 is used. A synthetic leather sheet is put between a stripper plate of a male mold 13 and the parting surface of the female mold 12 to be fixed in closing. The decorating molded product wherein the synthetic leather is integrally fixed to its surface is obtained by injecting molten resin from the male mold 13 side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative molded product whose surface is covered with synthetic leather, a manufacturing method for producing such a decorative molded product by an in-mold molding method, and a surface covered with synthetic leather. The present invention relates to a spectacle case having a high design and a high quality.

[0002]

2. Description of the Related Art In recent years, it has been demanded that the surface of a plastic molded article be highly decorated, including its texture.

Generally, the surface decoration of a plastic molded product is a method of decorating the plastic molded product after molding by using direct printing, transfer printing, foil pressing, painting, electrostatic flocking, underwater transfer and the like. , There is a method of decorating at the same time as plastic molding using simultaneous painting by the in-mold molding method.

Any of the above decorating methods can be applied up to a flat or quadric surface of the plastic molded product to be decorated, but when the plastic molded product has a cubic curved surface. The decoration is limited to tampo printing, a decoration method after plastic molding by an underwater transfer method, and simultaneous molding painting by an in-mold method.

In the in-mold molding method, injection-molding or blow-molding is carried out in a state where a decorative sheet which has been printed and processed in advance is inserted and placed in a molding die, and only the pattern of the decorative sheet is transferred to a molded article. Alternatively, the decorative sheet itself is integrally molded and fixed to a predetermined flat surface to a cubic curved surface of the molded product for decoration. In the decoration of a cubic curved surface by such an in-mold molding method, the decorative sheet is required to have stretchability so that the cubic curved surface of the plastic molded product and the decorative sheet come into close contact with each other.

[0006]

Among various decorative sheets, the synthetic leather is one in which a synthetic resin layer having a leather pattern is laminated on a base cloth made of a woven cloth. As a decorative sheet used in the in-mold molding method, it is a material having insufficient elongation suitability. For this reason, when a synthetic leather sheet is used as the decorative sheet, the decorative molded article may be deformed (warped) due to the contracting action of the synthetic leather sheet that is forcibly stretched during injection molding, or the surroundings of the mold cavity However, there is a problem that the synthetic leather sheet is cut off. In addition, there is a problem that the use of a high-temperature and high-pressure molten resin for forcibly stretching the synthetic leather sheet causes the surface of the synthetic leather sheet to be melted or irregularities to be formed, impairing the appearance.

On the other hand, for example, a hard case which has been conventionally used as a spectacle case is one in which a main body made by adhering a high quality cloth or the like to a plastic molded product and a lid are openably and closably engaged. However, since the plastic molding process and the decoration process are separate processes, there is a limit to the reduction of manufacturing cost. Therefore, a spectacle case that is easy to manufacture and has a high texture is desired, but such a spectacle case has not been realized yet.

The present invention has been made in view of the above-mentioned circumstances, and a decorative molded product having a design and a high texture, the surface of which is covered with synthetic leather, and such a decorative molded product are in-mold molded. An object of the present invention is to provide a manufacturing method which is manufactured by the method, and an eyeglass case which has high designability and texture and is easy to manufacture.

[0009]

In order to achieve such an object, the decorative molded product of the present invention is clamped by inserting a synthetic leather sheet between a male mold and a female mold of an injection mold. In the decorative molded product in which synthetic leather is attached to the surface obtained by injecting molten resin from the male mold side, the female mold is provided with a notch on the parting surface around the molding cavity, The mold has a stripper plate for sandwiching and fixing the synthetic leather sheet with the parting surface at the time of mold clamping, and the decorative molded product has a flange on its outer peripheral portion.

The decorative molded article of the present invention is obtained by inserting a synthetic leather sheet between the male and female molds of an injection mold, clamping the mold, and injecting a molten resin from the male mold side. In a decorative molded product having a surface on which synthetic leather is adhered, the female mold includes a dug portion on a parting surface around a molding cavity, and the male mold has a parting surface of the female mold during mold clamping. A stripper plate for sandwiching and fixing only the central portion of the synthetic leather sheet between the strips is provided, and the decorative molded product is provided with a flange on the outer peripheral portion thereof.

According to the method for producing a decorated molded product of the present invention, a synthetic leather sheet is inserted between a male mold and a female mold, the mold is clamped, and a molten resin is injected from the male mold side to form the synthetic leather on the surface. In the manufacturing method for obtaining the attached decorative molded product, the synthetic leather sheet is placed on a female mold having a notch on the parting surface around the molding cavity, and a male stripper plate is used during mold clamping. With the synthetic leather sheet sandwiched between the parting surface and the parting surface, molten resin was injected from the male side to form a decorative molded product having a flange on the outer peripheral portion.

Further, in the method for producing a decorative molded product of the present invention, a synthetic leather sheet is inserted between the male mold and the female mold, and the mold is clamped.
In a manufacturing method for obtaining a decorative molded product having synthetic leather adhered to the surface by injecting a molten resin from the male mold side, in the female mold having a dug portion on the parting surface around the molding cavity, the synthetic A leather sheet is placed, and when the mold is clamped, only a central portion of the synthetic leather sheet is sandwiched between the parting surface and fixed by a male stripper plate, and molten resin is injected from the male side, and the outer circumference is fixed. A decorative molded product having a flange at its part is formed.

Further, in the eyeglass case of the present invention, a synthetic leather sheet is inserted between the male mold and the female mold of the injection mold, the mold is clamped, and the surface obtained by injecting the molten resin from the male mold side. A case body and a case lid part to which synthetic leather is integrally fixed are provided, and the case body and the case lid part are configured to be openably and closably engaged with each other.

Further, in the above spectacle case, the case body and the case lid are combined between a female mold having a notch in a parting surface around the molding cavity and the parting surface at the time of mold clamping. A molded product having a flange on the outer periphery obtained by inserting a synthetic leather sheet between a male mold and a male mold having a stripper plate for clamping and fixing the leather sheet, and injecting molten resin from the male mold side. The flange was cut and removed. Alternatively, in the above-mentioned spectacle case, the case body and the case lid are provided with a female die having a dug portion on a parting surface around a molding cavity, and the synthetic leather sheet between the parting surface during mold clamping. The synthetic leather sheet is inserted between the male mold and the male mold that has a stripper plate for fixing only the central portion of the mold, and the mold is clamped. The flange of the molded product was cut and removed.

[0015]

[Function] The synthetic leather sheet is fixed by being sandwiched between the male type stripper plate and the female type parting surface, so that the synthetic leather sheet can be stably stretched during mold clamping, and the female type is molded. Since the parting surface around the cavity is provided with the notch, the peripheral part of the molding cavity is effectively prevented from exhibiting a cutting action on the synthetic leather sheet. Further, the synthetic leather sheet is fixed by sandwiching only the central portion between the male stripper plate and the female parting surface, and the peripheral portion can move without being fixed. The peripheral part can be moved so as to be drawn to the central part, so that the stretching is performed stably, the residual stress due to the unreasonable stretching does not occur in the molded product, and the female mold is located around the molding cavity. Since the parting surface has a dug part that has a depth that allows the synthetic leather sheet to move when stretched, the synthetic leather sheet does not have tension, and the periphery of the molding cavity is Effectively exhibiting a cutting action. Further, by using a synthetic leather sheet having a non-woven fabric as a base fabric, more stable stretching is performed. When the flange portion of the molded product is cut using the guide jig, the outer peripheral portion of the molded product is held at a constant size, so that stable cutting is possible. Further, by using the synthetic leather sheet having the foamed resin-containing nonwoven fabric as the base fabric, thermal deformation of the synthetic leather sheet is prevented by the heat insulating action of the base fabric.

[0016]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a perspective view showing an example of the decorative molded product of the present invention, and FIG. 2 is a II-II of the decorative molded product shown in FIG.
It is a longitudinal cross-sectional view taken along the line. 1 and 2,
The decorative molded product 1 has a vertically long dome shape, and its cross-sectional structure is a laminated structure in which the synthetic leather sheet layer 2 is located outside and the resin layer 3 is located inside. The lower outer peripheral portion of the decorative molded product 1 is a portion where the flange is cut and removed as described later, and the end surface 3a of the inner resin layer 3 is exposed to the outside. Such a decorative molded product 1 is produced by in-mold molding as described below.

As shown in FIG. 3, the synthetic leather sheet 2 constituting the decorative molded article 1 of the present invention is obtained by bonding the surface skin 6 and the base cloth 7 with the adhesive layer 8.

The skin 6 is a synthetic resin layer on which a leather pattern is formed. The resins constituting the skin 6 include polyurethane resin, polyamide resin, vinyl chloride resin, etc., but the heat resistance temperature is 180 to 200 ° C. A high polyurethane resin is preferred.

As the base cloth 7, woven cloth and non-woven cloth made of fibers such as rayon, polyester, cotton, nylon and the like can be mentioned. Considering the stretchability required for the synthetic leather sheet, a synthetic material having high elasticity is used. A fibrous non-woven fabric is preferably used. Furthermore, a non-woven fabric having a heat insulating property and a soft feel, which is manufactured by a wet method described below, is preferable as the base fabric 7.

The wet method is to raise a nonwoven fabric, impregnate the nonwoven fabric with a solution of polyurethane dissolved in a solvent such as dimethylformamide, methyl ethyl ketone, etc., coagulate with water, and then replace the solvent with water with warm water. According to the method, the water (water replaced with the solvent) in the polyurethane during drying is removed, and the portion becomes hollow to obtain a polyurethane foam-containing nonwoven fabric.

The material of the resin layer 3 constituting the decorative molded article 1 of the present invention is not particularly limited, and examples thereof include polystyrene resin, ABS (acrylonitrile butadiene copolymerization) resin, polypropylene resin, polyethylene resin, polycarbonate. It can be appropriately selected from resins, polyamide resins, polyacetal resins and the like.

Next, the method for producing the decorative molded product of the present invention will be described by taking the decorative molded product 1 shown in FIG. 1 as an example. FIG. 4 is a vertical cross-sectional view of an in-mold molding die used for producing the decorative molded product of the present invention. In FIG. 4, a synthetic leather sheet 2 is placed on a female die 12 of an in-mold molding die 11,
The molten resin R is injected into the space inside the mold from the male mold 13.

The female die 12 is provided with a vent hole 21 communicating with a vacuum exhaust source (not shown), and the vent hole 21 is opened as a vacuum hole 22 in the parting surface 23 of the female die 12. Further, a notch 25 is formed on the parting surface around the molding cavity 24 of the female die 12.
The synthetic leather sheet 2 has a female parting surface 23.
And is preliminarily fixed to the female mold 12 by the suction force of the vacuum holes 22. FIG. 5 shows a synthetic leather sheet 2
FIG. 3 is a view of a state of being preliminarily fixed to the female die 12 as seen from the male die direction. A plurality of vacuum holes 22 are usually provided in order to generate an appropriate holding force. The formation position of the vacuum hole 22 is a position covered by the synthetic leather sheet 2 on the parting surface, and the opening shape of the vacuum hole 22 is circular in the illustrated example, but it is not limited to this, and a slit shape or the like. But it's okay. The number, the formation position, and the opening shape of the vacuum holes 22 are determined in consideration of the weight, thickness, surface roughness, breathability, flexibility, etc. of the synthetic leather sheet 2 used so that the synthetic leather sheet 2 does not drop by its own weight. It may be set appropriately.

On the other hand, a stripper plate 31 is disposed on the male mold 13 so as to be supported by a support rod 32 so as to be movable in the left-right direction in the drawing. The stripper plate 31 is biased in the direction of the female die 12 by the repulsive force of the spring 33, and a stopper for preventing the stripper plate 31 from falling off the support rod 32 is formed at the tip of the support rod 32. The stripper plate 31 in this state projects in the direction of the female die 12 from the male molded product forming surface 34, and when the die is clamped, the stripper plate 31.
Contact the synthetic leather sheet 2 before the male molded product forming surface 34.
The tip of 2 hits the parting surface 23 of the female die 12. Therefore, the parting surface 2 corresponding to the support rod 32
3 is provided with a counterbore 26, and a support rod 32 is housed in the counterbore 26 when the mold is clamped.

Next, the in-mold molding die 11 described above is used.
The procedure for producing the decorated molded product of the present invention will be described.

First, the synthetic leather sheet 2 is placed on the parting surface 23 of the female mold 12 with the in-mold molding die 1 open and the female mold 12 and the male mold 13 separated from each other. Pre-fix.

Next, in the mold clamping step, as described above, the stripper plate 31 of the male mold 13 projects toward the female mold 12 beyond the male molded product forming surface 34, so the stripper plate 31 is clamped during the mold clamping. 31 is a male molded product forming surface 3
The synthetic leather sheet 2 is brought into contact with the sheet 4 before 4. When the distance between the female die 12 and the male die 13 is further reduced, the stripper plate 31 is pushed back toward the male die 13,
At the same time, the urging force of the spring 33 causes the stripper plate 31 to firmly press and fix the periphery of the synthetic leather sheet 2 against the parting surface 23 of the female die 12. Further, when the female die 12 and the male die 13 approach each other, the male molded product forming surface 34 contacts the synthetic leather sheet 2 and the stretching of the synthetic leather sheet 2 is started. At this time, synthetic leather sheet 2
Since its periphery is fixed to the parting surface 23 by the stripper plate 31, even if a stretching force is applied to the synthetic leather sheet 2, the synthetic leather sheet does not shift and sufficient stretching can be obtained.

FIG. 6 is a vertical cross-sectional view of the in-mold molding die showing the state where the mold clamping is completed. When the mold clamping is completed, the stripper plate 31 is in contact with the male mold 13, so that the synthetic leather sheet 2 is firmly pressed and fixed by the mold clamping force itself of the molding die in addition to the biasing force of the spring 33. The state of the synthetic leather sheet 2 before the injection of the resin after completion of the mold clamping is as shown in the enlarged view of FIG. The notch portion 25 is stretched while being in contact with the edge a on the molding cavity 24 side and the edge b on the parting surface 23 side. That is, the conventional molding die has only one edge formed by the parting surface 23 and the molding cavity 24, whereas the present invention has two edges a and b. The force applied to the synthetic leather sheet 2 from the edge portion when the leather sheet 2 is stretched is dispersed. For this reason, in the conventional molding die, the edge acts like a knife to cut the synthetic leather sheet, but in the present invention, the breaking of the synthetic leather sheet is effectively prevented.

Next, in the injection step, the molten resin R is injected into the gap between the synthetic leather sheet 2 and the male molded product forming surface 34. FIG. 7 is a cross-sectional view of the in-mold molding die showing a state in which such an injection step is completed, and FIG. 8B is a view showing a state near the molding cavity 24. As shown in the drawing, the molten resin R is formed in the cutout portion 2 of the female mold 12.
Up to 5 are filled to form the resin layer 3. Therefore, the decorative molded product 1 taken out from the in-mold molding die 11 has the flange 5 on the outer peripheral portion thereof, as shown in FIG. 8C. Then, by cutting and removing the flange 5, the decorative molded product 1 as shown in FIG. 1 is obtained. In the present invention, the notch 2 is provided to prevent the synthetic leather sheet from breaking during in-mold molding.
5 is provided, and the resulting decorative molded product is provided with a flange 5, but since the resin layer 3 is also present on this flange 5, the final product of the decorative molded product 1 as shown in FIG. 1 is obtained. It is also possible to obtain an effect that trimming is easy. That is, the decorative molded product obtained by using the in-mold molding die in which the notch portion 25 is not provided has an extra synthetic leather sheet in the peripheral portion, and the extra synthetic leather sheet is present in trimming. However, there is a problem that the synthetic leather sheet is stretched during cutting, the trimming is not stable, and the finish of the cut surface is poor. However, in the present invention, since the resin layer 3 is present on the flange 5 and has a hardness suitable for cutting, the finish of the cut surface of the decorative molded product becomes extremely sharp.

Next, another method for producing the decorative molded product of the present invention will be described by taking the decorative molded product 1 shown in FIG. 1 as an example.

FIG. 9 is a vertical cross-sectional view showing another example of the in-mold molding die used for producing the decorative molded product of the present invention, and the left and right (upper and lower sides of the drawing) are symmetrical. The in-mold molding die 41 of FIG. 9 includes a female die 51 and a male die 61, and the imposition of the cavity 52 of the female die 51 is four imposition as shown in the plan view of the female die 51 of FIG. . In addition, it goes without saying that the in-mold molding die used for producing the decorative molded product of the present invention may be asymmetrical.

The female die 51 is provided with a vent hole 56 which communicates with a vacuum exhaust source (not shown). The vent hole 56 is formed in the dug portion 58 of the female die 51 on the parting surface 55. It is open as A protrusion 54 is provided at the center of the parting surface 55 of the female die 51.
The synthetic leather sheet 2 has a dug portion 58 of the female die 51.
It is placed at a predetermined position on the inner parting surface 55 and is preliminarily fixed to the female mold 51 by the suction force of the vacuum holes 57. The formation position of the vacuum holes 57 is a position covered by the synthetic leather sheet 2 on the parting surface, and the number, formation position, and opening shape of the vacuum holes 57 are used so that the synthetic leather sheet 2 does not drop by its own weight. 2, weight, thickness,
It may be appropriately set in consideration of surface roughness, air permeability, flexibility and the like.

On the other hand, a stripper plate 62 is disposed on the male die 61 so as to be supported by a support rod 63 so as to be movable in the left-right direction in the drawing. The stripper plate 62 is biased toward the female die 51 by the repulsive force of the spring 64, and a stopper for preventing the stripper plate 62 from falling off the support rod 63 is formed at the tip of the support rod 63. The stripper plate 62 in this state protrudes in the direction of the female die 51 from the male molded product forming surface 65, and is stripped by the stripper plate 62 during mold clamping.
Comes into contact with the synthetic leather sheet 2 before the male molded product forming surface 65. In addition, the male molded product forming surface 6
A gate 66 for injecting the molten resin is provided in each of the central portions of the parts 5.

In-mold molding die 41 as described above
When the mold clamping is started with the synthetic leather sheet 2 preliminarily fixed in, the stripper plate 62 in the central portion of the male die 61 first comes into contact with the synthetic leather sheet 2 and the protruding portion in the central portion of the female die 51 is contacted. 54 and stripper plate 62
Thus, only the central portion of the synthetic leather sheet 2 is sandwiched and fixed. On the other hand, the peripheral portion of the synthetic leather sheet 2 is not fixed and is in a free state. This state is shown in FIG. 10, and the synthetic leather sheet 2 is kept in a free state in which it can move in the arrow direction (direction of the central protrusion 54) as shown in FIG.

When the female mold 51 and the male mold 61 further approach each other and the male molded product forming surface 65 comes into contact with the synthetic leather sheet 2, the synthetic leather sheet 2 is placed inside the cavity 52 as shown in FIG. Be pushed into. However, as described above, only the central portion of the synthetic leather sheet 2 is fixed, and the peripheral portion 2 ′ of the synthetic leather sheet 2 is the dug portion 58 (the synthetic leather sheet 2 is stretched when stretched) formed in the female mold 51. The peripheral portion 2 ′ is deep enough to move, and a space S is formed between the dug portion 58 and the stripper plate 62. Therefore,
Simultaneously with pushing the synthetic leather sheet 2 into the cavity 52, the peripheral portion 2 ′ of the synthetic leather sheet 2 is pulled toward the central protruding portion 54. As described above, in the mold clamping step, since the peripheral portion of the synthetic leather sheet 2 is fixed and the synthetic leather sheet is not forcibly stretched, the decorative molded article 1 that has been formed and then taken out has a synthetic leather sheet. There is no residual stress that causes 2 to return to its original shape, and deformation due to warpage is less likely to occur. Further, as shown in FIG. 11 (b), since the peripheral portion 2'of the synthetic leather sheet 2 is not fixed, the edge 52 'of the cavity 52 acts on the synthetic leather sheet 2 like a knife. Without the edge 52 '
Therefore, the synthetic leather sheet 2 is not broken.

Next, in the injection step, the molten resin R is injected into the gap between the synthetic leather sheet 2 and the male molded product forming surface 65. FIG. 12 is a cross-sectional view of the in-mold molding die showing a state where such an injection process is completed. As shown in the figure, the molten resin R is filled up to the dug portion 58 of the female die 51 to form a resin layer. Therefore, the decorative molded product 1 taken out from the in-mold molding die 41
Has a flange on its periphery. Then, the decorative molded product 1 as shown in FIG. 1 is obtained by cutting and removing this flange. As with the flange 5 of the decorative molded product 1 shown in FIG. 8C, a resin layer is present in this flange together with the synthetic leather sheet layer, so that the decorative molding of the final form as shown in FIG. Trimming to obtain the object 1 is easy.

Here, a method for cutting and removing the flange will be described by taking a decorative molded product with a flange obtained by the in-mold molding die 41 as an example.

FIG. 13A shows the decorative molded product 1 with the guide jig 7
It is sectional drawing which shows the state mounted on 1. Guide jig 71
Is a male cutting blade whose side portion constitutes the blade portion 72, and the upper surface thereof has a dome portion 73 corresponding to the inner surface shape of the decorative molded product 1 to be cut. The base of the dome 73 is
It is set to be slightly larger than the inner surface shape of the peripheral part of the decorative molded product 1. A cutting female blade 75 whose inner surface constitutes a blade portion 76 is located above the guide jig 71.

When the decorative molded product 1 is placed on such a guide jig 71 as shown in the drawing, the peripheral portion of the decorative molded product 1 has a fixed shape corresponding to the base of the dome portion 73 of the guide jig 71. It is forced to spread to the size. That is, the guide jig 71
By using, the decorative molded product 1 is always fixed to the same size. In this state, the flange 5 is cut by lowering the cutting female blade 75 as shown in FIG. 13B, but the cut portion of the flange 5 is always constant,
There is no uncut portion or overcut of the flange 5.
As described above, the resin layer 3 is formed on the flange 5 of the decorative molded product 1.
Is present and has a hardness suitable for cutting, the cut surface of the decorative molded product has an extremely sharp finish. The end surface of the synthetic leather sheet layer and the end surface of the resin layer are exposed at the cut end surface.

In the illustrated example, the guide jig and the cutting male blade are integrated, but the two are separate and the cutting male blade is arranged outside the guide jig. Good. FIG.
4 is a sectional view showing an example of a cutting device using such a guide jig. In FIG. 14, the guide jig 71 is a base portion 70.
It is slidably arranged on a support member 78 provided above, and is biased upward by a spring 79 mounted on the support member 78. The upper surface of the guide jig 71 has a dome portion 7 corresponding to the inner surface shape of the decorative molded product 1 to be cut.
Three. The base of the dome portion 73 is set to be slightly larger than the inner surface shape of the peripheral portion of the decorative molded product 1. A cutting male blade 72 is arranged outside the guide jig 71, and a cutting female blade 75 whose inner surface constitutes a blade portion 76 is located above the guide jig 71 (FIG. 14).
(A)).

Next, when the decorative molded product 1 is placed on such a guide jig 71 and the cutting female blade 75 is lowered, the flange 5 of the decorative molded product 1 comes into contact with the cutting female blade 75. (In this state, the flange 5 is separated from the cutting male blade 72), the decorative molded product 1 is pressed against the lower guide jig 71, and the peripheral portion of the decorative molded product 1 is separated from the guide jig 71. Dome part 7
It is forcibly expanded to a certain size corresponding to the base of No. 3 (FIG. 14 (b)). Incidentally, such a guide jig 71
FIG. 14 is a view for assisting the mounting of the decorative molded product 1 to the
A temporary pressing jig 77a as shown by an imaginary line in (a) may be provided. The temporary pressing jig 77a is locked to the base 77b by a spring 77c and presses the decorative molded product 1 on the guide jig 71 against the guide jig 71 with a predetermined pressure.

Further, the cutting female blade 75 descends to guide the guide jig 71.
Is pressed downward, the flange 5 comes into contact with the cutting male blade 72, and the cutting female blade 75 descends as it is, whereby the flange 5 is cut (FIG. 14C). At this time, since the decorative molded product 1 is always fixed to the same size by the guide jig 71 as described above, the cut portion of the flange 5 is always constant, and uncut or overcut of the flange 5 may occur. There is no.

In all of the above methods for removing the flange trimming, the decorative molded product is placed on the guide jig to perform trimming. In the present invention, the trimming female blade is arranged on the lower side. A cutting removal method is also possible in which the decorative molded product is placed on the cutting female blade and the guide jig and the cutting male blade are lowered from above.

Next, the spectacle case of the present invention will be described.

FIG. 15 is a front view showing an example of the spectacle case of the present invention, and FIG. 16 is a plan view showing a state where the spectacle case shown in FIG. 15 is opened. Glasses case 8 of the present invention
1 is a case body 8 in which a lower frame body 84 is fixed to the peripheral portion.
2 and the case lid portion 8 in which the upper frame body 85 is fixed to the peripheral portion.
3, the case main body 82 and the case lid portion 83 are openably and closably engaged by the lower frame body 84 and the upper frame body 85 being pivotally attached by spring pins at their hinge portions (not shown). There is. Further, a stopper 87 for preventing the eyeglasses from falling is provided inside the case of the lower frame body 84,
Inners 86a and 86b made of a flocked sheet are provided inside the case main body 82 and the case lid 83, respectively. Further, a latch 88 is attached to the lower frame body 84 so that the latch 88 engages with an engaging portion (not shown) of the upper frame body 85 when the case body 82 and the case lid 83 are closed. Is configured. The latch 88 may be formed of a resin having a slip property and a spring property, and may be formed of, for example, a polyacetal resin, a polypropylene resin, an ABS (acrylonitrile butadiene copolymer) resin, or the like.

FIG. 17 is a sectional view showing a fixed state of the case body 82 and the lower frame body 84. In FIG. 17, the case body 82 is a decorative molded product in which the synthetic leather sheet 2 is located outside and the resin layer 3 is located inside. Such a case body 82 can be obtained by the method for producing a decorative molded product of the present invention described above, and the synthetic leather sheet 2 and the resin layer 3 are each the synthetic leather of the decorative molded product 1 described above. Since the same materials as those mentioned for the sheet 2 and the resin layer 3 can be used, the description thereof is omitted here. A lower frame body 84 is fixed to the peripheral portion of the case body 82. The lower frame body 84 is usually formed by injection molding of synthetic resin, and it is preferable to use a resin of the same type as the resin layer 3 of the case body 82. Case body 8
The fixing of 2 and the lower frame body 84 can be performed by a known means such as ultrasonic fusion or adhesion with an adhesive. As described above, the lower frame member 84 is provided around the case body 82.
By fixing the, the flange cut end surface generated when the case main body 82 is formed is hidden by the frame body. The case lid portion 83 and the upper frame body 85 are also the same as the case body 82 and the lower frame body 84, and thus the description thereof will be omitted.

The spectacle case of the present invention is not limited to the above embodiment. FIG. 18 is a vertical cross-sectional view showing another example of the spectacle case of the present invention. In the spectacle case 91, a case body 92 having a lower frame 94 fixed to the peripheral portion and an upper frame 95 fixed to the peripheral portion. The case main body 92 and the case lid 93 are openably and closably engaged with each other by the lower frame 94 and the upper frame 95 being pivotally attached to the hinge 98 by a spring pin. There is. A case main body 92 and a case lid 93 that form the eyeglass case 91.
Is similar to the case main body 82 and the case lid portion 83 that form the above-mentioned eyeglass case 81, but the above-mentioned eyeglass case is that the lower frame body 94 and the upper frame body 95 are respectively integrated with the inner. Different from 81. That is, the lower frame body 94 and the upper frame body 95 are frame body portions 94a and 9a fixed to the peripheral portions of the case body 92 and the case lid portion 93, respectively.
5a, and a main body 92 and inner portions 94b and 95b located inside the case lid portion 93 as inner portions. The shapes and materials of the frame parts 94a and 95a and the fixing to the case main body 92 and the case lid part 93 can be the same as in the case of the above-mentioned eyeglass case 81. Further, the inner parts 94b and 95b may have the same surface condition as the frame parts 94a and 95a, or the surface that comes into contact with the stored spectacles may have a flocked sheet condition.

In addition, the above-mentioned eyeglass cases 81 and 91.
Uses spring pins to engage the lower frame body 84 and the upper frame body 85 and the lower frame body 94 and the upper frame body 95 in the hinge portion. The thin portion may be used as a hinge by integrally molding the body 85, or the lower frame body 94 and the upper frame body 95 through the thin portion. Lower frame body 8 in this case
4, the material of the upper frame body 85, the lower frame body 94, and the upper frame body 95 is preferably polypropylene resin.

[0050]

As described in detail above, according to the present invention, a decorative molded product having a synthetic leather sheet integrally fixed to the surface thereof can be obtained. This decorative molded product is not affected by the heat of the synthetic leather sheet. It has a good appearance and a good appearance and texture without deformation after molding due to residual stress of the synthetic leather sheet layer, and this decorative molded product can be easily obtained by the in-mold molding method. it can. Further, an eyeglass case including a case body and a case lid made of such a decorative molded article has a high-class feeling that cannot be obtained by a conventional eyeglass case, and an eyeglass case of a certain quality is easy, and
The effect is that stable production is possible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a decorative molded product of the present invention.

FIG. 2 is a vertical sectional view taken along line II-II of the decorative molded product shown in FIG.

FIG. 3 is a schematic sectional view showing an example of a synthetic leather sheet used in the present invention.

FIG. 4 is a vertical cross-sectional view of an in-mold molding die used for producing the decorative molded product of the present invention.

FIG. 5 is a view of a state in which the synthetic leather sheet is preliminarily fixed to the female mold as viewed from the male mold direction.

FIG. 6 is a vertical cross-sectional view of the in-mold molding die showing a state where the mold clamping is completed.

FIG. 7 is a vertical cross-sectional view of the in-mold molding die showing a state where the injection process is completed.

FIG. 8 is a view for explaining the shape of the in-mold molding die and the flange shape of the decorative molded product of the present invention.

FIG. 9 is a vertical cross-sectional view showing another example of the in-mold molding die used for producing the decorative molded product of the present invention.

FIG. 10 is a diagram for explaining a molding imposition and a method of fixing a synthetic leather sheet.

FIG. 11 is a vertical cross-sectional view of the in-mold molding die showing a state where the mold clamping is completed.

FIG. 12 is a vertical cross-sectional view of the in-mold molding die showing a state where the injection process is completed.

FIG. 13 is a cross-sectional view showing a state where the decorative molded product is placed on a guide jig and a state where the flange of the decorative molded product is cut using the guide jig.

FIG. 14 is a cross-sectional view showing another example of a cutting device including a guide jig.

FIG. 15 is a front view showing an example of the spectacle case of the present invention.

16 is a plan view showing a state in which the spectacle case shown in FIG. 15 is opened.

FIG. 17 is a cross-sectional view showing an engaged state of a case body and a lower frame body which constitute the eyeglass case of the present invention.

FIG. 18 is a vertical cross-sectional view showing another example of the spectacle case of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Decorative molded product 2 ... Synthetic leather sheet layer 3 ... Resin layer 5 ... Flange 6 ... Outer skin 7 ... Base cloth 11,41 ... In-mold molding die 12,51 ... Female mold 13,61 ... Male mold 24, 52 ... Molded cavitity 23, 55 ... Parting surface 25 ... Notch part 58 ... Digging part 71 ... Guide jig 81, 91 ... Glasses case 82, 92 ... Case body 83, 93 ... Case lid part 84, 94 ... Lower part Frame 85, 95 ... Upper frame 87 ... Stoppers 86a, 86b, ... Inner

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Claims (13)

[Claims] 1. Synthetic leather is integrally formed on the surface obtained by inserting a synthetic leather sheet between a male mold and a female mold of an injection mold, clamping the mold, and injecting a molten resin from the male mold side. In the fixed decorative molded product, the female mold is provided with a notch on the parting surface around the molding cavity, and the male mold sandwiches the synthetic leather sheet with the parting surface during mold clamping. A decorative molded product, comprising a stripper plate for fixing, and the decorative molded product having a flange on an outer peripheral portion thereof. 2. A synthetic leather is integrally formed on a surface obtained by inserting a synthetic leather sheet between a male mold and a female mold of an injection mold, clamping the mold, and injecting a molten resin from the male mold side. In the fixed decorative molded product, the female mold includes a dug portion on a parting surface around the molding cavity, and the male mold is a synthetic leather sheet between the male mold and a parting surface of the female mold at the time of mold clamping. Of the decorative molded product, wherein the decorative molded product is provided with a flange on the outer peripheral portion thereof. 3. The decorative molded product according to claim 1, wherein the flange is cut and removed, and the cut end face has a synthetic leather surface and a resin surface. 4. A decorative molding in which a synthetic leather is integrally fixed to the surface by inserting a synthetic leather sheet between a male mold and a female mold, clamping the mold, and injecting a molten resin from the male mold side. In the manufacturing method for obtaining a product, the synthetic leather sheet is placed on a female mold having a notch on the parting face around the molding cavity, and a space between the synthetic leather sheet and the parting face is secured by a male stripper plate during mold clamping. A method for producing a decorative molded product, comprising the step of injecting a molten resin from the male mold side with the synthetic leather sheet sandwiched between and fixing the molded product to form a decorative molded product having a flange on the outer peripheral portion. 5. A decorative molding in which a synthetic leather is integrally fixed to the surface by inserting a synthetic leather sheet between a male mold and a female mold, clamping the mold, and injecting molten resin from the male mold side. In a manufacturing method for obtaining a product, the synthetic leather sheet is placed on a female mold having a dug portion on a parting surface around a molding cavity, and a central part of the synthetic leather sheet is placed by a male stripper plate during mold clamping. Injecting the molten resin from the male mold side in a state where only it is sandwiched and fixed between the parting surface and the molded part, a decorative molded product having a flange on the outer peripheral part is molded. Production method. 6. A decorative molding without a flange, wherein the decorative molded product is placed on a guide jig, and the flange is cut and removed while the outer peripheral portion of the decorative molded product is held at a constant size. An article is obtained, and the method for producing a decorated molded article according to claim 4 or claim 5. 7. Synthetic leather is integrally formed on a surface obtained by inserting a synthetic leather sheet between a male mold and a female mold of an injection mold, clamping the mold, and injecting a molten resin from the male mold side. An eyeglass case, comprising: a case body and a case lid part that are fixed to each other, wherein the case body and the case lid part are engaged in an openable and closable manner. 8. The case body and the case lid are fixed by sandwiching a synthetic leather sheet between a female mold having a notch on a parting surface around a molding cavity and the parting surface when the mold is clamped. A synthetic leather sheet is inserted between the male mold and a male mold that has a stripper plate for clamping, and the molded product having a flange on the outer periphery obtained by injecting molten resin from the male mold is cut and removed. The spectacle case according to claim 7, which is a thing. 9. The center portion of the synthetic leather sheet between the female body having a dug portion on a parting surface around the molding cavity and the parting surface at the time of mold clamping. A molded product having a flange on the outer peripheral portion obtained by inserting a synthetic leather sheet between the male mold and a male mold provided with a stripper plate for fixing by sandwiching and clamping the molten resin from the male mold side. 8. The flange is obtained by cutting and removing the flange.
Eyeglass case described in. 10. The spectacle case according to claim 7, wherein the synthetic leather sheet has a base cloth made of a non-woven fabric containing a foamed resin. 11. The case main body includes a lower frame body on an outer peripheral portion thereof, and the case lid portion includes an upper frame body on an outer peripheral portion thereof.
The eyeglass case according to any one of 0. 12. The spectacle case according to claim 11, wherein at least one of the upper frame body and the lower frame body is provided with a stopper for preventing spectacles from falling. 13. The spectacle case according to claim 7, wherein the case body and the case lid have an inner part made of a flocked sheet inside the case cover.