JP2001030424A - Chip composite molding and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To rigidly bond a base material layer to a surface elastic material layer by manufacturing a chip composite molding by providing the elastic material layer obtained by binding many elastic chips by a binder and the base material layer of a plate-like rigid material, and heating an unvulcanized rubber to cure the rubber to thereby integrally bond the base material layer to the elastic material layer. SOLUTION: The chip composite molding formed by recycling and using rubber and resin wastes comprises a surface elastic material layer 12 to become a surface layer, a rubber layer 14 to become an intermediate layer and a base material layer 16. As the layer 16, a metal plate or a rigid material 40 such as a concrete or the like is suitably adopted. The layer 12 is molded of an elastic material 20 obtained from elastic chips 24 and a binder 26. The material 20 is charged on an unvulcanized rubber 30 to become the layer 14 by heating and curing, molded as a chip composite molding by compression thermoforming and simultaneously molded as the layer 12. A vulcanized adhesive 50 is given between the material 40 and the rubber 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip composite molded article and a method for producing the same, and more particularly, to a surface elastic layer made of an elastic chip obtained by pulverizing an elastic substance, and a substrate made of a rigid body. A chip composite in which a rubber layer is interposed between the surface elastic body layer and the base material layer when the layers are combined to form a composite molded body, so that the two layers can be firmly bonded to each other. The present invention relates to a molded article and a method for producing the same.

[0002]

2. Description of the Related Art Recently, environmental degradation due to an increase in the amount of waste discharged has been recognized as a social problem. In connection with this waste problem, the industrial fields used are widespread, and there is an urgent need to reduce the amount of rubber / resin-based waste that emits a huge amount. As one of the very promising methods for reducing this emission, recycling of the rubber / resin waste is considered.

As a particularly promising example of the recycling, the discharged rubber / resin-based waste is pulverized into chips, a predetermined amount of a binder such as polyurethane is added thereto, mixed, and then mixed. There is a method of obtaining a regenerated product having elasticity by molding in a mold, and is already used in various fields. In particular, in the field of pavement materials, etc., where rigid bodies such as concrete and iron plates have been mostly used, impact mitigation and
Regenerated elastic bodies made from the above-mentioned rubber / resin-based waste, which exhibit various functions such as water absorption, are suitably used. However, if the elastic body is completely replaced with a rigid body, difficulties such as insufficient strength for maintaining the shape are pointed out. Therefore, a composite layered structure in which the rigid body is a lower layer and the elastic body is an upper layer. Are preferably used.

[0004]

However, the surface of the rigid body made of concrete, metal, or the like is generally smooth without large irregularities, whereas the elastic body obtained from the rubber-resin waste is generally smooth. The body surface is very uneven. Therefore, even if an elastic body is connected to the rigid body, microscopically, they are merely joined in a so-called point contact state. For this reason, the joining state of the two is not sufficiently strong, and a serious drawback is pointed out that the two are easily peeled off due to various factors such as an impact caused by walking and seasonal temperature fluctuation.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks inherent in the prior art, and has been proposed in order to preferably solve the problem. An unvulcanized rubber is interposed between the surface elastic layers, and the unvulcanized rubber is heated and cured in accordance with the compression heating of the chip composite molded article, whereby the base layer and the surface elastic layer are solidified. It is an object of the present invention to provide a chip composite molded body and a method of manufacturing the same.

[0006]

Means for Solving the Problems In order to overcome the above-mentioned problems and achieve the intended object, the chip composite molded article of the present invention has a large number of elastic chips obtained by pulverizing an elastic substance, which are joined by a binder. A surface elastic body layer made of an elastic body, a base material layer made of a plate-shaped rigid body, and an intermediate material interposed between the surface elastic body layer and the base material layer, which are heated and cured by heating the unvulcanized rubber. It is characterized by comprising a surface elastic body layer and a rubber layer for bonding the base material layer.

[0007] In order to overcome the above-mentioned problems and achieve the intended object, a method for manufacturing a chip composite molded article according to another invention of the present application is as follows.
A method of manufacturing a chip composite molded body in which an elastic body composed of a number of elastic chips obtained by crushing an elastic substance and a plate-shaped rigid body are combined, wherein the plate-shaped molded body is placed in a predetermined mold. A bonding means is provided in advance on the rigid body, and an unvulcanized rubber sheet is laid with a predetermined thickness on the bonding means, and the raw material of the elastic body is provided on the unvulcanized rubber sheet. The mixture of the elastic chip and the binder is put into a layer to form a layer, compression heating is performed by the mold, an elastic body is molded from the mixture, and the unvulcanized rubber sheet is vulcanized and cured. The elastic body and the plate-shaped rigid body are connected to each other.

[0008] In order to overcome the above-mentioned problems and achieve the intended object, a method of manufacturing a chip composite molded article according to another aspect of the present invention comprises an elastic body comprising a large number of elastic chips obtained by pulverizing an elastic substance. A method of manufacturing a chip composite molded body in which a plate-shaped rigid body is combined with a plate-shaped rigid body, wherein a bonding means is provided in advance on the plate-shaped rigid body placed in a predetermined mold, and Laying an unvulcanized rubber sheet with a predetermined thickness, on this unvulcanized rubber sheet, laying an elastic body previously molded from a mixture of the elastic chip and the binder to form a layer, The elastic body and the plate-like rigid body are joined by compressing and heating by the mold to cure and cure the unvulcanized rubber sheet.

In order to overcome the above-mentioned problems and achieve the intended object, a method of manufacturing a chip composite molded article according to still another invention of the present application is to provide an elastic body comprising a large number of elastic chips obtained by pulverizing an elastic substance. A method of manufacturing a chip composite molded article in which a plate-shaped rigid body is combined with a plate-shaped rigid body, wherein the plate-shaped rigid body is placed in a predetermined mold, and unvulcanized rubber is placed on the plate-shaped rigid body. A predetermined amount of a mixed liquid of a raw liquid and a vulcanizing agent is charged, and an elastic body pre-molded from a mixture of the elastic chip and the binder is laid on the mixed liquid to form a layer, and the mixture is formed by the mold. The elastic body and the plate-like rigid body are combined by performing compression heating and vulcanizing and curing the mixed liquid of the unvulcanized rubber raw liquid and the vulcanizing agent. .

[0010] In order to overcome the above-mentioned problems and achieve the intended object, a method of manufacturing a chip composite molded article according to still another invention of the present application comprises an elastic body comprising a large number of elastic chips obtained by pulverizing an elastic substance. A method of manufacturing a chip composite molded body combined with a plate-shaped rigid body, in a predetermined mold, a mixture of an elastic chip and a binder as a raw material of the elastic body, containing a vulcanizing agent, An unvulcanized rubber sheet previously formed to a predetermined thickness is placed in a layered state, and is subjected to compression heating with the mold, thereby obtaining the elastic body and the unvulcanized rubber. The elastic body and the rigid body are joined by forming an intermediate molded body in which a sheet is joined and bonding the intermediate molded body and the separately prepared plate-shaped rigid body by a required adhesive means. It is characterized by the following.

In order to overcome the above-mentioned problems and achieve the intended object, a method of manufacturing a chip composite molded article according to still another invention of the present application is directed to a method for manufacturing an elastic body comprising a large number of elastic chips obtained by pulverizing an elastic substance. A method for manufacturing a chip composite molded body in which a plate-shaped rigid body is combined with an elastic body previously molded from a mixture of an elastic chip and a binder in a predetermined mold,
The unvulcanized rubber is placed in a layered state, and compression heating is performed with the mold, thereby forming an intermediate molded body in which the elastic body and the unvulcanized rubber are combined, and separately prepared from the intermediate molded body. The elastic body and the rigid body are connected by bonding the plate-shaped rigid body to the rigid body by a required adhesive means.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a chip composite molded article according to the present invention; The inventor of the present application bonded a surface elastic body layer formed from a mixture obtained by mixing a binder with a rubber-resin-based elastic chip on a base layer made of a plate-like rigid body such as concrete. When forming a chip composite molded body, a chip obtained by forming a layered material in which an unvulcanized rubber is interposed between the base material layer and the surface elastic material layer, and applying compression heating to the layered material The composite molded article has been found that the base layer and the surface elastic layer are firmly bonded to each other by physical and chemical forces.

As shown in FIG. 1, a chip composite molded article according to a preferred embodiment of the present invention has a surface elastic layer 1 serving as a surface layer.
2, a rubber layer 14 serving as an intermediate layer, and a base material layer 16 serving as a base. The base material layer 16 has a sufficient strength and hardness and can be processed to a predetermined size, and a rigid body 40 such as a metal plate or concrete processed into a plate shape is suitably used. The surface elastic body layer 12 is formed from an elastic body 20 obtained from an elastic chip 24 and a binder 26. The elastic body 20 is heated and
It is put on an unvulcanized rubber 30 (to be described later) which becomes a rubber layer 14 by curing, and is molded as a surface elastic body layer 12 simultaneously with the molding of the chip composite molded body by compression and heat molding. As the rubber layer 14, an unvulcanized rubber 30 in an unvulcanized state that is vulcanized and cured by heating is used. The rigid body 4
0 and the unvulcanized rubber 30, a bonding means 50
As a vulcanizing adhesive.

As the elastic body 20, it is preferable to use the elastic chip 24 and the binder 26 in the form of a mixture having fluidity without being formed by mixing. The mixture is molded simultaneously with the molding of the molded article to obtain a chip composite molded article.

As the elastic chip 24, various kinds of rubber or resin which have been crushed to a predetermined size in advance are used. The size after pulverization is an important factor for determining the density of the surface elastic body layer 12 after molding the chip composite molded body.
And the thickness of the unvulcanized rubber 3
The thickness of the elastic tip 24 is 0.5 to 1.5.
It is set to be about twice. In this embodiment,
A waste or the like is preferably used as a raw material of the elastic chip 24, but is not limited thereto. The type of the rubber or resin is not particularly limited, but can be suitably selected depending on the intended use of the chip composite molded article. For example, rubber is preferably used when high elasticity is required, and resin is preferably used when hardness is required. If the elasticity of the surface elastic layer 12 is not impaired,
Impurities such as glass pieces or metal pieces may be mixed in the elastic chip 24.

As the binder 26, moisture-curable polyurethane or the like is preferably used, but other thermosetting polyurethanes or rubber-based adhesives can also be used. Each of the above-mentioned binders is selectively used as appropriate according to the material of the elastic chip 24. The application of the binder 26 to the chips 24 is performed by mixing with a mixer, spraying or impregnation.

The aforementioned elastic tip 24 and binder 26
Of the elastic body 20 obtained from
By changing various factors such as the mixing ratio of the binder 26 and the like, it is possible to provide functionality such as porosity, that is, functions such as water permeability and adsorptivity represented by deodorization.

As the unvulcanized rubber 30, an unvulcanized rubber sheet 32 previously processed into a sheet shape is preferably used. The unvulcanized rubber sheet 32 has a predetermined thickness, and is pre-cured so that the unvulcanized rubber sheet 32 is vulcanized and cured by compression heating during molding of the chip composite molded body. A vulcanizing agent is a necessary and sufficient mixture. Therefore, it is possible to maintain a flexible state until the components are stacked and heated by compression, and to maintain a necessary and sufficient strength after the compression and heating.

As another configuration, as shown in FIG. 2, there is a method of using an unvulcanized rubber mixture 34 obtained by mixing an unvulcanized rubber raw liquid and a vulcanizing agent, that is, a liquid state. In this case, the mixed liquid 34 of the unvulcanized rubber in a liquid state
However, when each component is formed into a layer, it is necessary to configure the component so that it does not penetrate into the rigid body 40 and the elastic body 20 positioned above and below. That is, as the rigid body 40, a metal plate or the like having a small number of pores or the like on its surface is used, and the elastic body 20 needs to be formed in advance, not in a mixture state. With such a configuration, the mixed liquid 34 of the unvulcanized rubber is heated and hardened in a state where it is impregnated in the rigid body 40 and the elastic body 20. Has the advantage that it can provide a strong binding force. In this case, the bonding means 50 between the rigid body 40 and the unvulcanized rubber 30 becomes unnecessary.

[0020]

The manufacturing method of the chip composite molded body will be briefly described. As shown in FIGS. 3 and 4, the chip composite molded body is composed of an upper mold 60a and a lower mold 60b which define a cavity 60c by being hermetically closed. After the components of the chip composite molded article are sequentially placed in a mold 60 that can be freely opened and closed and controlled in temperature by a control mechanism (not shown) to form a laminated state, the mold 60 is sealed and compressed to a predetermined state. The chip composite molded body 10 is obtained by heating at a temperature and time. The mold 60 is provided with a heating means 6 such as an electric heater.
It is configured so as to be held by the hot plates 64, 64 provided with the two. Depending on the configuration, the heating means 62 may be provided on the upper mold 60a and the lower mold 60b constituting the mold 60.
May be provided.

The above-mentioned manufacturing method will be described in detail. As shown in FIG. 5, a plate-like rigid body 40 such as concrete serving as the base material layer 16 is placed in the lower mold 60b (FIG. 5 (a)). )reference). Then, a vulcanizing adhesive as the bonding means 50 is sufficiently applied to the plate-shaped rigid body 40 by a method such as coating over the entire surface of the plate-shaped rigid body 40 (see FIG. 5B). ). It is also possible to use an ordinary adhesive such as polyurethane as the bonding means 50. In this case, the unvulcanized rubber 3
It is necessary to use an adhesive of a type that can suitably bond the rigid body 40 to the non-vulcanized rubber 30 and the intermediate molded body 11 in which the unvulcanized rubber 30 and the elastic body 20 are previously bonded in layers. Consideration such as bonding the intermediate molded body 11 and the rigid body 40 is required (details will be described later).

Next, as shown in FIG. 6, the unvulcanized rubber sheet 32 is placed on the vulcanized adhesive as the bonding means 50.
Laying. The unvulcanized rubber sheet 32 has flexibility before being vulcanized and cured, and can be easily deformed by compression during molding of the chip composite molded body 10.
In addition, the composition starts to be cured promptly by heating and reaches complete curing.

Finally, a predetermined amount of a mixture of the elastic chip 24 and the binder 26 forming the surface elastic layer 12 is put on the unvulcanized rubber sheet 32 as shown in FIG. The mixture is formed such that the binder 26 is cured and molded as the elastic body 20 simultaneously with the molding of the chip composite molded body 10, and the elastic chip 24, which is a component, bites into the unvulcanized rubber sheet 32. become. That is, when molded into the chip composite molded body 10, the large number of elastic chips 24 constituting the elastic body 20 which becomes the surface elastic body layer 12 become the rubber layer 14 by compression during molding. The molding of the chip composite molded body 10 is completed while the rubber sheet 32 is cut into the rubber sheet 32. That is, a so-called anchor effect is exerted, and the surface elastic layer 12 and the rubber layer 14 are bonded very firmly. In this example, the elastic body 20 is put into the mold 60 in the form of a mixture so that the surface elastic body layer 12 can be formed simultaneously with the molding of the chip composite molded body 10. The body 20 may be formed in advance from the mixture and laid on the unvulcanized rubber sheet 32.

By compression heating for a predetermined time and temperature,
The base layer 16 and the rubber layer 14 constituting the chip composite molded body 10 are bonded by a vulcanized adhesive as the bonding means 50.
The rubber layer 14 and the surface elastic layer 12 are firmly bonded to each other due to the chemical adhesive force of the binder 26 in the surface elastic layer 12 and the physical anchor effect that the elastic chip 24 cuts into. . Then, the mold 60 is opened, the molded chip composite molded body 10 is taken out from the inside, cooled,
It is completed by performing various processes such as processing.

[0025]

As described above, the method for manufacturing a chip composite molded article according to the preferred embodiment of the present invention comprises placing the rigid body 40 in the mold 60, applying the vulcanized adhesive, A layered material is formed by laying a sulfuric rubber sheet 32 and charging a mixture of the elastic chip 24 and the binder 26, and the chip composite molded body 10 is obtained by performing compression heating (see FIG. 4). As an example, a manufacturing method in which an elastic body 20 previously molded is laid instead of the mixture (see FIG. 8A), or an unvulcanized rubber sheet 32 is used instead of the unvulcanized rubber sheet 32 as described above. The chip composite molded body 10 may be manufactured using a mixed liquid 34 of a rubber raw liquid and a vulcanizing agent (FIG. 8B).
reference).

FIGS. 9 and 1 show still another manufacturing method.
As shown in FIG. 0, a layered intermediate molded body 11 made of the elastic body 20 and the unvulcanized rubber 30 is molded in advance according to any of the above-described manufacturing methods, and the intermediate molded body 11 and the rigid body 40 are formed. There is a method of forming the chip composite molded body 10 by bonding using the bonding means 50. As the adhesive means 50 used in this manufacturing method, various kinds of adhesives capable of securely adhering a metal plate or concrete serving as the base material layer 16 and various rubbers serving as the rubber layer 14 are selectively used as appropriate. Is done. That is, it changes depending on the material of the base layer 16 and the rubber layer 14. Since only the bonding is performed in the bonding step between the base material layer 16 and the rubber layer 14, it is possible to employ the most suitable conditions for the adhesive used.
For example, if an adhesive exhibiting a sufficiently strong adhesive force only in the curing time is adopted as the bonding means 50, a forming die and a control device related to the forming become unnecessary, and a concrete ground or a steel plate having a thickness of about 4 mm is formed. It is also possible to obtain a chip composite molded body by performing on-site construction such as providing the bonding means 50 on a step or the like to be performed and laying the intermediate molded body 11.

[0027]

Modification In the preferred embodiment described above, the chip composite molded body 10 including the base material layer 16, the rubber layer 14, and the surface elastic body layer 12 has been described, but the elastic body 20 (mixture) before molding by compression heating is described. The elastic body 20 (mixture), the unvulcanized rubber sheet 32, and the plate-like rigid body 40 are stacked in this order on the upper side through a release means 52 such as release paper, and compressed. You may shape | mold by heating. In this case, as shown in FIG. 10, two chip composite molded bodies 10, 10 can be obtained at the same time, so that a reduction in manufacturing cost can be expected.

[0028]

[Experimental Examples] The following are some experimental examples, but the present invention is not limited to the contents disclosed in these experimental examples.
In addition, a mixture of an elastic chip and a binder is used as an elastic body for forming a surface elastic body layer used in the following experimental examples. A rubber chip pulverized to about 2 mm mesh was used as the elastic chip, and a urethane binder (urethane prepolymer) was used as a binder. The mixing ratio for obtaining the mixture is as follows: elastic chip: binder = 10
0: 3 (weight ratio), and these were sufficiently mixed and used.

(Experiment 1) A total of five experimental bodies were prepared.
Experimental examples 1 to 3 are experimental examples of the chip composite molded article according to the present invention. The configuration is such that a 10 mm thick steel plate is used as a plate-like rigid body, an unvulcanized rubber sheet (made of EPDM) of a predetermined thickness is used as an unvulcanized rubber, and an apparent specific gravity is 1.0 as an elastic body. Each of the above mixtures was used. The adhesive applied between the steel plate (rigid body) and the unvulcanized rubber is a vulcanized adhesive as described above. Then, two comparative examples 4 and 5 were prepared as conventional molded articles, and the same rigid and elastic bodies as those in Experimental Examples 1 to 3 were used, and no unvulcanized rubber was provided. Further, as an adhesive applied to the surface of the steel plate (rigid body), the same vulcanizing adhesive as used in Experimental Examples 1 to 3 was used in Comparative Example 4, and a urethane binder used to form an elastomer thin film was used in Comparative Example 5. Was. The thickness of the rubber sheet in the unvulcanized state and the thickness of the surface elastic layer at the time of molding the chip composite molded body in each of the experimental examples and comparative examples are as shown in Table 1 below. The steel plate used as a rigid body used in this experiment has a thickness of 10 mm, which is thicker than a steel plate normally used for, for example, stairs. This is the result of a tensile test described later. In order to clarify the above, a steel plate of 10 mm was dared to be adopted.

In Experimental Example 1, Experimental Example 2 and Experimental Example 3,
As shown in FIG. 12, the components of each thickness described in Table 1 were arranged in the order of rigid body, (adhesive), unvulcanized rubber, elastic body, unvulcanized rubber, (adhesive) and rigid body from below. To form a layered material
(See FIG. 12A), and in Comparative Examples 4 and 5,
The components of each thickness described above, rigid body from below, (adhesive),
The elastic body, the (adhesive) and the rigid body are laminated in this order to form a layered product (see FIG. 12 (b)).
Molding was performed under a heating condition of min to obtain a chip composite molded body. After the completion of the molding, the two steel plates serving as the base material layers disposed on both outer sides are pulled in a direction away from each other until the chip composite molded body is destroyed, and the chip composite molded body is destroyed. The breaking strength and the breaking position were measured and visually confirmed. The results are shown in Table 2 below.

As can be seen from Table 2, each of the chip composite compacts laminated and molded in the configuration according to the present invention was obtained in Comparative Example 4.
Unlike the conventional compacts of (5) and (5), the breaking strength is large and the breaking position is limited between the chips. That is, it was confirmed that the bonding strength between the surface elastic body layer and the base material layer was sufficiently strong. It is also presumed that the thickness of the rubber layer is not greatly affected by the size of the elastic tip. However, when the size of the elastic tip is larger than the allowable range or when the rubber layer is extremely thin, a so-called anchor effect due to the biting of the elastic tip cannot be expected. 0.5 to 1.
About 5 is considered to be appropriate.

(Experiment 2) Basically, the above-mentioned experimental examples 1 to 3
Under the same conditions, a 10 mm-thick steel plate as a plate-like rigid body, an unvulcanized rubber sheet (made of EPDM) having a predetermined thickness as an unvulcanized rubber, and an apparent specific gravity of 1.0 as an elastic body. Using the above mixture, each was laminated to form a layered product as Comparative Examples 6 and 7, and molded in a predetermined mold at 160 ° C. for 10 minutes to obtain a chip composite molded product. However, in the case of Comparative Example 6, no vulcanizing adhesive was applied to the surface of the rigid body, and the rigid body and the unvulcanized rubber were bonded using only the curing of the unvulcanized rubber. In the case of Comparative Example 7, the urethane used for bonding the elastic chip to the surface of the unvulcanized rubber is used before the mixture is poured onto the unvulcanized rubber laid on the rigid body. A process for separately applying a binder was performed.

After forming the chip composite molded body in the same manner as in Experiment 1, the two steel sheets serving as the base layers disposed on both outer sides are separated from each other until the chip composite molded body is broken. Tensile strength and breaking position at the time when the chip composite was broken were measured and visually confirmed. The results are shown in Table 3 below together with Experimental Example 1. The chip composite elastic body according to Comparative Example 6 had a very weak breaking strength of 9.9 kgf / cm ² , and the breaking occurred at the position between the base material layer and the rubber layer, and the vulcanized adhesive played a major role. Was confirmed. In addition, with respect to Comparative Example 7, a very good result was obtained, and it was confirmed that the bonding method according to the conventional method can be added to the chip composite molded article according to the present invention, and the bonding can be further strengthened.

(Experiment 3) The chip composite molded body molded by the same production method as in Experimental Example 1 having favorable results obtained in Experiment 1 described above is processed into a predetermined size and used for the steps of the steps. did. The use condition at this time was confirmed by actual use and visual observation. When the chip composite molded body according to the present invention is used, since elastic materials such as rubber, which are usually adopted only for a part of the stairs, are used for the entire steps of the stairs, footsteps and the like accompanying the ascending and descending of the stairs are large. It is possible to obtain a safe, comfortable and quiet quiet stair step because water permeability is exhibited by the pores existing between the elastic chips constituting the surface elastic body layer, and it is hard to peel off due to the strong bonding force. did it.

[0035]

As described above, according to the chip composite molded article and the method for producing the same according to the present invention, the unvulcanized rubber is heated and cured between the base material layer and the surface elastic material layer. With the rubber layer interposed therebetween, it is possible to obtain a chip composite molded body capable of firmly bonding the base material layer and the surface elastic material layer, for which strong bonding has not been expected due to a difference in surface state.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a chip composite molded body according to a preferred embodiment of the present invention.

FIG. 2 is a schematic sectional view of a chip composite molded body according to another invention of the present application.

FIG. 3 is a manufacturing process diagram of a chip composite molded body according to an example of the present invention.

FIG. 4 is a flowchart of a manufacturing process of a chip composite molded body according to a manufacturing method of a preferred embodiment of the present invention.

FIG. 5 is a schematic diagram for further explaining a part of the manufacturing process of the chip composite molded body shown in FIG. 3;

FIG. 6 is a schematic view for further explaining a part of the manufacturing process of the chip composite molded body shown in FIG. 3;

FIG. 7 is a schematic view for further explaining a part of the manufacturing process of the chip composite molded body shown in FIG. 3;

FIG. 8 is a flowchart of a manufacturing process of a chip composite molded body by a manufacturing method different from the manufacturing method of the preferred embodiment of the present invention.

FIG. 9 is a flowchart of a manufacturing process of a chip composite formed body by a manufacturing method different from the manufacturing method of the preferred embodiment of the present invention.

FIG. 10 is a flowchart of a manufacturing process of a chip composite molded body by a manufacturing method different from the manufacturing method of the preferred embodiment of the present invention.

FIG. 11 is a schematic sectional view showing another modified example of the chip composite molded body according to the embodiment of the present invention.

FIG. 12 is a schematic cross-sectional view showing a layered state of each component adopted during an experiment of the chip composite molded body according to the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 12 surface elastic body layer 11 intermediate molded body 14 rubber layer 16 base layer 20 elastic body 24 elastic chip 26 binder 30 unvulcanized rubber 32 unvulcanized rubber sheet 34 mixed solution 40 rigid body 50 vulcanized adhesive (adhesive Means) 60 mold

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 22, 1999 (July 7, 1999
2)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 10

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B29K 105: 20 105: 24 B29L 9:00 F term (Reference) 4F100 AB03 AK51 AK75 AN00C AS00A AT00B BA03 BA07 BA10A BA10B CA03 DE05A EC18 EC182 EJ06 EJ062 EJ08 EJ08C EJ082 EJ17 EJ42 GB07 JB15C JK01B JK07A JL16 4F203 AA31 AA45 AC01 AD03 AD08 AD18 DA11 DB02 DB11 DC01 DD04 DE06 DF01 DF05 DJ01 DW06 4F204 AA01 FB01 AD13 FB03 FH06 FN07 FN17 FQ01 FQ15 FQ19 FW06

Claims (9)

[Claims] 1. A surface elastic body layer (12) comprising an elastic body (20) in which a number of elastic chips (24) obtained by pulverizing an elastic substance are joined by a binder (26); A base layer (16) made of (40), interposed between the surface elastic body layer (12) and the base layer (16),
A rubber layer (14) that bonds the surface elastic layer (12) and the base layer (16) by heating and curing the unvulcanized rubber (30)
A chip composite molded body, comprising: 2. A method for producing a chip composite molded article in which an elastic body (20) comprising a large number of elastic chips (24) obtained by pulverizing an elastic substance and a plate-like rigid body (40) are combined. A bonding means (50) is previously provided on the plate-like rigid body (40) placed in a predetermined mold (60), and the unvulcanized sheet is formed on the bonding means (50) at a predetermined thickness. A rubber sheet (32) in a state is laid, and the elastic body (20) is placed on the rubber sheet (32) in an unvulcanized state.
A mixture of an elastic chip (24) and a binder (26), which are raw materials, is charged into a layer, and compression heating is performed by the mold (60) to form an elastic body (20) from the mixture, A chip composite molding, wherein the elastic body (20) and the plate-like rigid body (40) are bonded by vulcanizing and curing the unvulcanized rubber sheet (32). How to make the body. 3. A method for producing a chip composite molded article in which an elastic body (20) comprising a large number of elastic chips (24) obtained by crushing an elastic substance and a plate-like rigid body (40) are combined. A bonding means (50) is previously provided on the plate-like rigid body (40) placed in a predetermined mold (60), and the unvulcanized sheet is formed on the bonding means (50) at a predetermined thickness. A rubber sheet (32) is laid, and the elastic chip is placed on the unvulcanized rubber sheet (32).
An elastic body (20) previously molded from a mixture of (24) and a binder (26) is laid and formed into a layer, and is subjected to compression heating by the mold (60), and the rubber in the unvulcanized state is formed. A method for producing a chip composite molded body, characterized in that the elastic body (20) and the plate-like rigid body (40) are bonded by vulcanizing and curing the sheet (32). 4. The method according to claim 2, wherein said bonding means is a vulcanizing adhesive. 5. A method for producing a chip composite molded article in which an elastic body (20) comprising a large number of elastic chips (24) obtained by crushing an elastic substance and a plate-like rigid body (40) are combined. Then, the plate-shaped rigid body (40) is placed in a predetermined mold (60), and a mixed liquid of an unvulcanized rubber raw liquid and a vulcanizing agent is placed on the plate-shaped rigid body (40). (34) is charged in a predetermined amount, and the elastic chip (24) and the binder (2) are placed on the mixture (34).
An elastic body (20) previously molded from the mixture with (6) is laid to form a layer, and compression heating is performed by the mold (60), and the unvulcanized rubber raw liquid and the vulcanizing agent are mixed. A method for producing a chip composite molded body, characterized in that the elastic body (20) and the plate-shaped rigid body (40) are combined by vulcanizing and curing the mixed liquid (34). 6. A method for producing a chip composite molded article in which an elastic body (20) comprising a large number of elastic chips (24) obtained by crushing an elastic substance and a plate-like rigid body (40) are combined. In a predetermined mold (60), a mixture of an elastic chip (24) and a binder (26) as a raw material of the elastic body (20), a vulcanizing agent, and a predetermined thickness are formed in advance. The obtained unvulcanized rubber sheet (32) is placed in a layered state, and is subjected to compression heating with the mold (60), so that the elastic body (20) obtained thereby and the unvulcanized state are obtained. An intermediate molded body (11) combined with the rubber sheet (30) is molded, and the intermediate rigid body (11) and the plate-shaped rigid body (4
0) by means of required bonding means (50) to bond the elastic body (20) and the rigid body (40). 7. A method for producing a chip composite molded body in which an elastic body (20) comprising a large number of elastic chips (24) obtained by crushing an elastic substance and a plate-like rigid body (40) are combined. Then, the elastic tip (24) and the binder (2) are placed in a predetermined mold (60).
The elastic body (20) previously molded from the mixture of 6) and the unvulcanized rubber (30) are placed in a layered state, and the elasticity is obtained by performing compression heating with the mold (60). Body (2
(0) and the unvulcanized rubber (30) are combined to form an intermediate molded body (11), and the intermediate molded body (11) and the plate-shaped rigid body (4
0) by means of required bonding means (50) to bond the elastic body (20) and the rigid body (40). 8. The chip composite according to claim 7, wherein the unvulcanized rubber (30) is an unvulcanized rubber sheet (32) containing a vulcanizing agent and formed to a predetermined thickness in advance. A method for producing a molded article. 9. The method according to claim 7, wherein the unvulcanized rubber (30) comprises a mixed liquid (34) of an unvulcanized rubber raw liquid and a vulcanizing agent.