JPH10119137A - Plastic molding material, plastic molding and method for molding plastic molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mold a thick-walled synthetic resin molding by a mold by covering an aggregate vol.-increasing material not melted at the molding temp. of a molding synthetic resin material with the molding synthetic resin material before molding the same. SOLUTION: A molding synthetic resin material B is introduced from a first hopper 10 and stirred by a transfer screw 13 while heated and a vol.- increasing material A is introduced from a second hopper 11 in the vicinity of a period when the molding synthetic resin martial B becomes a semi-kneaded state and the molding synthetic resin material B and the vol. increasing material A are further stirred to be almost equally mixed to be introduced into a mold 6 to be formed in a round rod-shaped molding. The vol. increasing material reduced in wt. by starring small voids in the surface part or the inner part thereof not melted at the molding temp. of the molding synthetic resin material B and molded in an almost same size is used. The molding synthetic resin material B is used in a chip like or granular state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic molding material capable of molding a thick resin material, a plastic molded product, and a method of molding a plastic molded product.

[0002]

2. Description of the Related Art Conventionally, it has been difficult to mold a solid synthetic resin molded product using a thermoplastic resin, particularly a thick synthetic resin molded product using a mold. The reason for this is that in the case of solid synthetic resin molded products, the amount of resin naturally increases, and the thermoplastic resin, which is the material to be injected into the mold, shrinks (sinks) when cooled and hardened, and recesses are formed on the product surface. The reason for this is that the finished product does not have a good appearance even if it is made a defective molded product or does not become a defective molded product.

In order to solve this problem, there is a method of mixing calcium carbonate as a filler in a thermoplastic resin and reducing the amount of resin to reduce sink marks.

However, in the case of this means, if a large amount of calcium carbonate is used, the synthetic resin molded article becomes heavy.

[0005] If a large amount of calcium carbonate is used, the surface of the synthetic resin molded product becomes rough, and a finished product cannot be finished.

There is the disadvantage that

[0007] Therefore, since a large amount of calcium carbonate cannot be used, in order to produce a thick solid resin molded product, the amount of the resin must also be increased by an amount corresponding to the wall thickness. Problems are inevitable.

For this reason, the synthetic resin molded product must be made thin, and if it is made thin, a complicated reinforcing rib structure must be adopted in order to secure the strength, and it becomes difficult to process and manufacture the mold. It also has the disadvantage of being expensive.

Further, in order to solve this drawback, the use of a foamed resin and foaming the foamed resin at the time of molding to increase the thickness of the foamed resin complicates molding conditions due to the presence of a non-foamed thermoplastic resin and has a brittle strength. However, there is a drawback that the cooling time is prolonged.

[0010] It is a technical object of the present invention to provide a plastic molding material, a plastic molded product, and a method for molding a plastic molded product which have solved the above-mentioned disadvantages.

[0011]

The gist of the present invention will be described with reference to the accompanying drawings.

[0012] plastic molding at a molding temperature of the molding synthetic resin material B is characterized in that the molded synthetic resin material B to the aggregate-like volume increase material A ₁ which does not melt by molding the granular material C ₁ and allowed deposition It concerns materials.

Further, the molded synthetic resin material B ₂ is reduced in weight by increasing the small voids 1 in the surface portion and the interior that are not melted at the molding temperature of the molded synthetic resin material B.
The those pertaining to the plastic molding material characterized in that by molding the granular material C ₂ in allowed deposition.

Further, the volume increasing material A _{2, which} is reduced in weight by dispersing the small voids 1 on the surface or inside thereof which does not melt at the molding temperature of the molding synthetic resin material B, and the molding synthetic resin material B,
And a material for plastic molding, characterized in that:

The plastic molding material according to any one of claims 1 to 3, wherein a waste resin material is used as the molding synthetic resin material B.

A plastic molding material according to any one of claims 1 to 4, wherein a waste material which does not melt at the molding temperature of the molded synthetic resin material B is used as the volume increasing material A. It is.

[0017] A molded article using the plastic molding material according to any one of claims 1 to 5, characterized in that the molded article is formed into a confectionary structure by raising the surface or inside thereof. It relates to a plastic molded product.

According to a sixth aspect of the present invention, there is provided a plastic molded product, wherein a plastic material is mixed with a fibrous material 2 for reinforcing the strength of the molded product. .

The plastic molded product according to any one of claims 6 and 7, wherein the plastic molding material is molded in a foamed state by mixing the foaming material 3 with the plastic molding material. It relates to a molded article.

The plastic molded product according to any one of claims 6 to 8, wherein a strength reinforcing material 4 is wound around the molded product. The plastic molded article according to any one of claims 6 to 9, wherein a protective layer 5 for trimming is provided on the surface of the molded article.

Further, in the plastic molded product according to any one of claims 6 to 10, a plate material, a bar material, or a square material which is provided as a constituent material of a structure by providing a protective layer 5 for trimming on the surface of the molded product. The present invention relates to a plastic molded product characterized by being formed as described above. Further, the molding material is formed by flowing a granular material C obtained by applying the molding synthetic resin material B onto a volume increasing material A that does not melt at the molding temperature of the molding synthetic resin material B into a molding die 6. The present invention relates to a method for molding a plastic molded product.

A mixed material D obtained by mixing the volume-increasing material A which does not melt at the molding temperature of the molded synthetic resin material B with the molded synthetic resin material B is flow-introduced into the molding die 6 to form a molded article. The present invention relates to a method for molding a plastic molded article characterized by the following.

Further, the molded synthetic resin material B is heated to a molding temperature, and when the heated molded synthetic resin material B is flow-introduced into the molding die 6, the volume increasing material A is introduced and mixed to form a molded article. The present invention relates to a method for molding a plastic molded article characterized by the following.

Further, a waste material and a waste resin material which are not melted at a molding temperature are mixed and formed by a molding machine to form a molded product having a confectionery structure, or the waste material and the waste resin fiber material 2 are mixed. A confectionery-like molded product is formed by a molding machine, and a fiber 7 is wound around the molded product as a strength reinforcing material 4, and a protective layer 5 for trimming and shaping is provided on the surface of the molded product to form a plate or bar. Alternatively, the present invention relates to a method for forming a plastic molded product, which comprises forming a constituent material of a structure such as a square bar.

Further, the fiber material 2 and the foam material 3 are mixed into the waste resin material, the waste resin material is molded into a molded product in a foamed state, and the fiber 7 is wound around the molded product as the strength reinforcing material 4.
The present invention relates to a method for forming a plastic molded article, characterized in that a protective layer 5 for trimming is provided on the surface of the molded article to form a constituent material of a structure such as a plate, a bar, or a square.

[0026]

[Action] In the first aspect of the present invention, when using the granular material C ₁ to form a plastic molding, molding synthetic resin for example mold 6 the inner surface of the smooth surface to the mold 6 the inner surface as the surface by B by While being formed into a smooth surface if, on the inner surface portion and will be the volume increase material a ₁ is Zaisa distribution in confectionery-like structure caused by each other deposited to each other by molding synthetic resin material B, therefore, meat It becomes a plastic molding material capable of molding a thick plastic molded product.

According to the second aspect of the present invention, the granular material C
_When the plastic molded article is molded by using the plastic material ₂ , the volume-increasing material A2 is adhered to the inside of the plastic molded article by the molded synthetic resin material B in the same manner as described in claim 1, and is arranged in a confectionary structure. It is possible to mold a thick plastic molded product, and the volume increasing material A ₂
Since the small spaces 1 are interspersed and lightened, the plastic molding material is a plastic molding material from which a lightweight plastic molded product can be molded.

[0028] In the invention of claim 3, wherein, when forming the plastic molded product by mixing and molding a synthetic resin material B to the volume increasing agent A _2, volume inside the plastic molded product in an analogous manner to the effect of claim 2, wherein Increase material A ₂ is molded synthetic resin material B
Lighter have been made to scattered small voids 1 in candy-like structure distribution Zaisa is in the it is possible to mold a thick plastic article, yet the volume increasing agent A ₂ causes with each other and adhered to each other by Therefore, it is a plastic molding material from which a lightweight plastic molded product can be molded.

According to the fourth aspect of the present invention, the use of a waste resin material as the molded synthetic resin material B contributes to resource saving and recycling and is a low-cost plastic molding material.

According to the fifth aspect of the present invention, a waste material which does not melt at the molding temperature of the molded synthetic resin material B is used as the volume-increasing material A, thereby contributing to resource saving and recycling, and inexpensive plastic molding. Material.

According to the sixth aspect of the present invention, similarly to the above, the volume-increasing material A is adhered to each other by the molded synthetic resin material B, thereby forming a plastic molded article arranged in a confectionery structure.

According to the seventh aspect of the present invention, by mixing the fibrous material 2 into the plastic molding material, the fibrous material 2 is entangled with each other to obtain a plastic molded product having a reinforced strength.

According to the eighth aspect of the present invention, by mixing the foaming material 3 into the plastic molding material, the plastic molded article is reduced in weight.

According to the ninth aspect of the present invention, a plastic molded product whose strength is reinforced by winding the strength reinforcing material 4 around the molded product is obtained.

According to the tenth aspect of the present invention, by providing the protective layer 5 on the surface of the molded article, a plastic molded article having a good surface appearance can be obtained.

According to the eleventh aspect of the present invention, the protective layer 5 is provided on the surface of the molded product and is formed into a plate, a bar, or a square which is a constituent material of the structure. The resulting plastic molded article can be used as a constituent material of a structure having sufficient strength.

[0037] In the invention according to the twelfth aspect, a molding method capable of producing a plastic molded product disposed in a confectionery-like structure by causing a volume-increasing material A to adhere to each other with a molded synthetic resin material B inside similarly to the above and producing the molded product. Becomes When the granular material C is flow-introduced into the molding die 6, the granular material C may be kept as it is or the molded synthetic resin material B may be melted. The invention according to claim 13 is a molding method capable of producing a plastic molded article arranged in a confectionery-like structure, in which the volume increasing material A is adhered to each other by the molded synthetic resin material B inside similarly to the above. When the mixed material D is flow-introduced into the molding die 6, the mixed material D may be kept as it is or the molded synthetic resin material B may be melted. The invention according to claim 14 is a molding method capable of producing a plastic molded article arranged in a confectionery-like structure, in which the volume increasing material A is adhered to each other by the molded synthetic resin material B inside similarly to the above. In addition, since the volume increasing material A and the molded synthetic resin material B are mixed at the time of plastic molding, it is possible to perform a process from a molding material to a molded product in an integrated process.

In the invention according to the fifteenth aspect, the molded article is formed by the waste resin material and the waste material, or the waste resin material and the waste material and the fiber material 2, so that the raw material cost is very low, and the molded article is more compact. Since the molded product is molded into a naked confectionery structure, sink does not occur during molding even if the molded product is made thick.

Further, fibers 7 are used as the strength reinforcing material 4 in the molded product.
By winding, the molded article has a further increased strength, and furthermore, by providing a protective layer 5 for appearance correction on the surface, it is possible to imitate the constituent material of the structure.

In the invention according to claim 16, since the molded article is formed by mixing the fibrous material 2 and the foamed material 3 into the waste resin material, the fibrous material 2 is entangled with each other while the molded article is extremely lightweight. In addition, since the fibers 7 are wound and the strength is high, and since the protective layer 5 is provided on the surface of the molded product, the appearance of the molded product is good regardless of sink marks generated during molding. Furthermore, the protective layer 5 makes it possible to simulate a plastic molded product as a constituent material of a structure.

[0041]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described with reference to the drawings.

The volume increasing material A will be described in detail.

The volume increase material A ₁ may be used any one so long as it is a aggregate which does not melt at the molding temperature of the molding synthetic resin material B, but specifically ores,砕細and fired earth Use what you have done.

Further, as the volume increasing material A ₂ , a material obtained by crushing ore in a foaming state in which the small voids 1 are scattered to form a volume increasing material A ₂ having a substantially desired size is used. Specifically, a pearlite-based lightweight aggregate, such as obsidian pearlite (trade name Fuyolite), pumice or vermiculite, is used.
Alternatively, the soil or the viscosity may be baked at a high temperature to be hardened, and this may be crushed to form a foamed granular volume increasing material A ₂ scattered with the small voids 1 as described above.

The volume increasing material A to be used is preferably determined according to the purpose of use of the molded plastic article. For example, if high rigidity is required, the volume increasing material A
It may use _one, may be used the volume increasing agent A ₂ if you want reducing the weight. Further, the volume increasing material A ₁ and the volume increasing material A ₂ may be used by being mixed at an appropriate ratio.

The molded synthetic resin material B will be described in detail.

As the molded synthetic resin material B, any material may be used. Then, it is preferable to determine the material of the molded synthetic resin material B to be used according to the purpose of use of the molded plastic article. For example, if high rigidity is required, a hard plastic material may be used, and if high flexibility is required, a rubber material may be used.

The granular material C will be described in detail.

The granular material C may be constituted so that the molded synthetic resin material B is applied to one volume increasing material A or the molded synthetic resin material B is applied to a large number of volume increasing materials A. May be configured. And when the size of each granular material C is substantially the same, when molding a plastic molded product using the granular material C, it becomes easy to produce a uniform plastic molded product,
The molding conditions can be easily determined.

The specific means for forming the granular materials C ₁ and C ₂ is to add the volume increasing material A to the slightly softened synthetic resin material B.
₁・ A ₂ Add and stir and add volume A ₁・
Volume method, or it is mixed with no trouble in forming the adhesive to the molded synthetic resin material B, or deposited on a volume increasing agent A, the adhesive of depositing surface to the molded synthetic resin material B of A ₂ A method of applying the molded synthetic resin material B to the increasing materials A ₁ and A ₂ is exemplified. When an adhesive is used, a raw material chip of the molded synthetic resin material B or the like may be directly dusted.

The granular material C ₂ is made to adhere to the volume-increasing material A ₂ by causing the molded synthetic resin material B to flow into and harden the small gaps 1 formed on the surface and inside. Can be. In this case, simply molding the synthetic resin material B to the volume increase material A ₂ by heating in a state where the molded synthetic resin material B by mixing them slightly softened is deposited.

The mixture D will be described in detail.

The mixed material D is obtained by mixing a large number of volume increasing materials A and a molded synthetic resin material B in the above-mentioned granular material C. Therefore, the volume-increasing material A and the molded synthetic resin material B may be integrally joined, or the granular volume-increasing material A and the molded synthetic resin material B may be simply mixed.

The plastic molded article and the method for molding the plastic molded article will be described in detail below along with the method for molding the plastic molded article.

In the present embodiment, a case will be described in which a bar as a material of a building is formed by an extruder.

FIG. 14 shows an extrusion molding machine to be used. The molding synthetic resin material B is introduced from the first hopper 10,
The molded synthetic resin material B is stirred by the transfer screw 13 while being heated, and the volume increasing material A is introduced from the second hopper 11 in the vicinity where the molded synthetic resin material B becomes semi-kneaded. And the volume-increasing material A are almost uniformly mixed and then introduced into the molding die 6 to form a round bar-shaped molded product.

[0057] The volume increasing agent A is a volume increase material A ₂ which is formed into a substantially university was lighter by allowed to diffuse small gap 1 on the inner surface portion and which does not melt used at a molding temperature of the molding synthetic resin material B ing.

The molded synthetic resin material B is in the form of chips or particles. In the first hopper 10, together with the molded synthetic resin material B, a fiber material 2 such as glass fiber is used.
Is mixed in. The fiber material 2 may be introduced from the second hopper 11 or from other parts.

The extruder is provided with a foam material 3
A foam material hopper 12 is provided to introduce the plastic material, and the foam material 3 is introduced immediately before the plastic molding material is introduced into the mold 6.

Accordingly, the void 8 in the molded product formed by the foaming agent 3 is formed after the plastic molding material is introduced into the molding die 6, and the void 8 forms the plastic molding material in the molding die 6. The material is pressed against the inner wall of the molding die 6 (use of the expansion effect of the plastic molding material due to the formation of the voids 8), and the shrinkage (sinking) that occurs in the conventional plastic molded product is less likely to occur. . Further, the plastic molded article is reduced in weight by the gap 8.

Since this molding method is performed as described above, the volume increasing material A, the molded synthetic resin material B, and the fiber material 2 introduced from each hopper into the molding machine are uniformly mixed and introduced into the molding die 6. The confectionery-like structure is formed in the mold 6 to be formed into a molded product having a confectionary structure.

At this time, the volume increasing material A and the molded synthetic resin material B
When both are formed to be approximately the same size, the introduction from both hoppers into the introduction path and the introduction into the molding die 6 become good, and the confectionery-like structure is also simulated by the same volume increasing materials A ₁ and A ₂ . It becomes a confectionary structure and the strength is averaged.

Further, in the molded product, the amount of the synthetic resin material B used by the volume increasing material A can be reduced, and the molded product does not have sink marks.

[0064] Further, the surface portion and the interior of the volume increase material A ₂ from the small air gap 1 is brought scattered, volume increase material A ₂
And the molded synthetic resin material B are firmly adhered to each other, and a plastic molded article which is reduced in weight is molded.

Since the fibrous materials 2 become entangled with each other in the molded product, a molded product having high strength can be molded.

When molding a molded article using the granular material C, the number of hoppers to be used can be reduced. Specifically, when the granular material C is introduced from the first hopper 10 and heated and stirred, the molded synthetic resin material B adhered to the granular material C is melted into a semi-kneaded shape, and then foamed from the foam material hopper 12. After the material 3 is introduced, the plastic molding material can be introduced into the mold 6 to perform molding.
When the foam material 3 is not used (when it is not necessary to reduce the weight or when high rigidity is required), it is only necessary to introduce the granular material C from the first hopper 10.

When the granular material C ₁ and the granular material C ₂ are mixed and used, it is possible to introduce a mixture obtained by uniformly mixing the granular material C ₁ and the granular material C ₂ in advance from the first hopper 10. Good
A first hopper 10 leave the second hopper 11 and put each granular material C ₁ and the particulate material C ₂ in may be configured to be appropriately set change its introduced amount.

Further, in this embodiment, fibers 7 (glass fiber is inexpensive and good as a strength reinforcing material 4)
It is appropriately changed according to the use conditions such as when used in a corrosive atmosphere. ) To increase the strength of the molded product.

Further, a protective layer 5 is provided on the surface of the molded article to adjust the appearance (for example, when used like wood, a thin wooden board is attached as the protective layer 5) to form a structure. It can be used as a round bar as a constituent material.

In the case where the volume increasing material A ₂ having the small gap 1 is used as the volume increasing material A, when a molding machine such as an injection molding machine which applies pressure to the molten plastic molding material is used, the volume increasing volume is increased. There is a possibility that a small air gap 1 in wood a ₂ will be crushed is pressed, therefore, it is preferable to use an extruder. Further, in a case of not using the volume increase material A ₂ (e.g., a molded article shown in FIGS. 5 to 8 and 13.) May be used an injection molding machine.

When a first-grade resin molding material usually used as the protective layer 5 is used, the appearance of the molded product becomes the same as that of the first-grade plastic molded product. Further, when a protective layer 5 having a reinforcing effect of a molded article is used, a plastic molded article having higher rigidity can be molded.

In the present invention, a waste material can be used as the volume-increasing material A, and a waste resin material can be used as the molded synthetic resin material B.

The volume increasing material A can be any material as long as it does not melt at the molding temperature of the molded synthetic resin material B, and can be formed by crushing non-burnable dust. It is. Since the waste material is shielded from the surroundings by the molded synthetic resin material B, it may be a metal such as an empty can or a construction waste material (reinforced concrete, fume pipe, etc.) unless particularly corrosive is required.

As the molded synthetic resin material B, any material may be used as long as it is a waste resin material for plastic bottles and plastic bags.

When such a waste material or a waste resin material is used as a raw material, the surface of the molded plastic article has irregularities due to the waste material, and the appearance of the material is deteriorated. When the protective layer 5 is used for the surface layer, when the strength is required, or when corrosion resistance is required, the protection layer 5 can be appropriately changed depending on the use environment, so that it can sufficiently withstand practicality.

Further, by using waste materials and waste resin materials as raw materials, it is possible to manufacture plastic molded products at very low cost.

Further, by attaching thin wood as the protective layer 5, it can be used as a substitute for wood, so that not only oil resources but also wood resources can be saved, and it can be used as a substitute for concrete or brick. A plastic molding material, a plastic molded product, and a method of molding a plastic molded product suitable for resource saving that can be performed.

[0078]

As described above, according to the first aspect of the present invention, when a plastic molded article is formed by using a granular material, the surface is formed, for example, by molding using a synthetic resin material as the inner surface of the mold. If the inner surface of the mold is a smooth surface, the mold is formed into a smooth surface. However, a volume increasing material is adhered to each other by a molded synthetic resin material, and is arranged in a confectionary structure. A plastic molding material capable of molding the above plastic molded article.

According to the second aspect of the present invention, when the plastic molded article is molded using the granular material, the volume increasing materials are covered with the molded synthetic resin material inside the plastic molded article similarly to the first aspect of the present invention. It is possible to mold thick plastic molded products by arranging them in a confection-like structure, and small spaces are scattered in the volume-increasing material to reduce the weight. It becomes a plastic molding material capable of molding the molded plastic article.

According to the third aspect of the present invention, when the plastic molded article is molded by mixing the volume increasing material and the molded synthetic resin material, the volume increasing material is contained inside the plastic molded article in the same manner as in the second aspect. It is possible to mold thick plastic molded products by disposing them in a confectionary structure by sticking them together with the molded synthetic resin material, and reducing the weight by dispersing small voids in the volume increasing material. Thus, a plastic molding material capable of molding a lightweight plastic molded product can be obtained.

According to the fourth aspect of the present invention, the use of a waste resin material as a molded synthetic resin material contributes to resource saving and recycling, and is a low cost plastic molding material.

According to the fifth aspect of the present invention, a waste material which does not melt at the molding temperature of the molded synthetic resin material is used as a volume-increasing material, thereby contributing to resource saving and recycling, and also a low-cost plastic molding material. Becomes

According to the sixth aspect of the present invention, similarly to the above, a volume-increasing material is adhered to each other with a molded synthetic resin material to form a plastic molded article arranged in a confectionery structure.

According to the seventh aspect of the present invention, by mixing the fibrous material into the plastic molding material, the fibrous material is entangled with each other to obtain a plastic molded article having a reinforced strength.

According to the eighth aspect of the present invention, by mixing a foaming material into a plastic molding material, a lightweight plastic molded product can be obtained.

According to the ninth aspect of the present invention, a plastic molded article whose strength is reinforced by winding a strength reinforcing material around the molded article is obtained.

In the invention according to the tenth aspect, by providing a protective layer on the surface of the molded article, a plastic molded article having a good surface appearance can be obtained.

According to the eleventh aspect of the present invention, by providing a protective layer on the surface of the molded article and forming it on a plate, a bar, or a square, which is a constituent material of the structure, the resin material is thick, lightweight, and strong. It becomes a plastic molded article that can be used as a constituent material of a structure having sufficient characteristics.

In the invention according to the twelfth aspect, there is provided a molding method capable of producing a plastic molded article arranged in a confectionery-like structure by arranging a volume-increasing material inside each other with a molded synthetic resin material similarly to the above, thereby forming the molded article. . When the granular material is flow-introduced into the molding die, the granular material may be used as it is or the molded synthetic resin material may be melted.

According to the thirteenth aspect of the present invention, there is provided a molding method capable of producing a plastic molded article disposed in a confectionery-like structure, in which a volume increasing material is adhered to each other with a molded synthetic resin material in the same manner as described above. . When the mixed material is flow-introduced into the mold, the mixed material may be used as it is or the molded synthetic resin material may be melted.

[0091] In the invention according to the fourteenth aspect, there is provided a molding method capable of producing a plastic molded article disposed in a confectionery-like structure by arranging a volume-increasing material inside each other with a molded synthetic resin material similarly to the above and causing the volume increasing material to adhere to each other. . In addition, since the volume-increasing material and the molded synthetic resin material are mixed at the time of plastic molding, it is possible to perform a process from a molding material to a molded product in an integrated process.

According to the fifteenth aspect of the present invention, since the molded article is formed by the waste resin material and the waste material or the waste resin material, the waste material and the fiber material, the raw material cost is very low.
Moreover, since the molded article is formed into a confectionery-like structure, sinking does not occur during molding even if the molded article is made thick.

Further, by winding the fiber as a strength reinforcing material around the molded article, the molded article has a further increased strength. Further, by providing a protective layer for trimming on the surface, the structural material of the structure can be improved. Can be imitated.

In the invention according to claim 16, since the molded article is formed by mixing the fiber material and the foamed material with the waste resin material, the molded article is very light and the fiber materials are entangled with each other. Since the fibers are wound and have strength, and a protective layer is provided on the surface of the molded article, the appearance of the molded article becomes good regardless of sink marks generated during molding. Further, the protective layer makes it possible to imitate the plastic molded article as a constituent material of the structure.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of the granular material C ₁ of the present embodiment.

FIG. 2 is an explanatory cross-sectional view of the granular material C ₂ of the present embodiment.

[3] The volume increase material A ₁ of the present embodiment molded synthetic resin B
FIG. 7 is an explanatory cross-sectional view in the case of simply mixing

FIG. 4 shows a volume-increasing material A ₂ and a molded synthetic resin material B according to the present embodiment.
FIG. 7 is an explanatory cross-sectional view in the case of simply mixing

FIG. 5 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 6 is an explanatory cross-sectional view showing an example of a molded product of the present embodiment.

FIG. 7 is an explanatory cross-sectional view showing an example of a molded product of the present embodiment.

FIG. 8 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 9 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 10 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 11 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 12 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 13 is an explanatory sectional view showing an example of a molded product of the present embodiment.

FIG. 14 is an explanatory sectional view showing a manufacturing state of the present example.

FIG. 15 is an explanatory sectional view showing a mixed material D of the present example.

[Explanation of symbols]

A, A ₁ , A ₂ Volume increasing material B Molded synthetic resin material C, C ₁ , C ₂ Granular material D Mixed material 1 Small void 2 Fiber material 3 Foaming material 4 Strengthening material 5 Protective layer 6 Mold 7 Fiber

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08L 101/00 B29C 67/14 P // B29K 105: 04 105: 26

Claims (16)

[Claims] 1. A plastic molding material characterized in that a granular material is molded by applying the molded synthetic resin material to an aggregate-like volume increasing material that does not melt at the molding temperature of the molded synthetic resin material. 2. A method of forming a granular material by applying the molded synthetic resin material to a volume-increasing material which is reduced in weight by dispersing small voids in a surface portion or an interior which does not melt at a molding temperature of the molded synthetic resin material. A plastic molding material characterized by the following: 3. A plastic molding characterized by mixing a volume-increasing material which is reduced in weight by dispersing small voids in a surface portion or an interior which does not melt at a molding temperature of the molded synthetic resin material and the molded synthetic resin material. Materials. 4. The plastic molding material according to claim 1, wherein a waste resin material is used as the molded synthetic resin material. 5. The plastic molding material according to claim 1, wherein a waste material that does not melt at the molding temperature of the molded synthetic resin material is used as the volume increasing material. 6. A molded article using the plastic molding material according to any one of claims 1 to 5, wherein the molded article is formed into a confectionary structure by raising the surface or inside of the molded article. Plastic molded products. 7. The plastic molded product according to claim 6, wherein a plastic material is mixed with a plastic molding material and a fiber material for reinforcing the strength of the molded product is molded. 8. The plastic molded article according to claim 6, wherein a foaming material is mixed into the plastic molding material and the plastic molding material is molded in a foamed state. Goods. 9. The plastic molded product according to claim 6, wherein a strength reinforcing material is wound around the molded product. 10. The plastic molded article according to claim 6, wherein a protective layer for adjusting the appearance is provided on the surface of the molded article. 11. The plastic molded article according to claim 6, wherein a protective layer for trimming is provided on the surface of the molded article to provide a plate material, a bar material, or a square material as a constituent material of the structure. A plastic molded article characterized by being formed. 12. A molded article is formed by flowing a granular material obtained by applying the molded synthetic resin material onto a volume-increasing material that does not melt at the molding temperature of the molded synthetic resin material into a molding die. Molding method for plastic molded products. 13. A plastic, wherein a molded material is molded by flowing a mixed material obtained by mixing a volume-increasing material which is not melted at a molding temperature of the molded synthetic resin material and the molded synthetic resin material into a molding die. Molding method for molded products. 14. Heating the molded synthetic resin material to a molding temperature,
A molding method for a plastic molded article, characterized in that when the heated synthetic resin material is flow-introduced into a mold, a volume increasing material is introduced and mixed to form a molded article. 15. A waste material and a waste resin material that are not melted at a molding temperature are mixed and formed by a molding machine into a molded product having a confectionary structure, or the waste material and a waste resin material fiber material are mixed, It is made into a confectionery-shaped molded product by a molding machine, and a fiber is wound around the molded product as a strength reinforcing material, and a protective layer for trimming is provided on the surface of the molded product to form a plate, a bar, a square material, or the like. A method of forming a plastic molded product, comprising forming a constituent material of a structure. 16. A fiber material and a foam material are mixed into a waste resin material, the waste resin material is molded into a molded product in a foamed state, and a fiber is wound around the molded product as a strength reinforcing material. A method for forming a plastic molded article, comprising forming a structural material such as a plate, a bar, or a square by providing a protective layer for trimming on the surface.