JPH10178948A - Plastic cylindrical body and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic cylindrical body which is easily floats on water and is substitutable for bamboo floating on a sea surface for cultivating marine products by forming a joined cylindrical body by joining the plural pieces of the cylindrical bodies made of plastic on both sides of one or plural pieces of joint node bodies and forming a space part sectioned by the joint node bodies inside the joined cylindrical body. SOLUTION: For instance, the joined cylindrical boy is formed by joining the cylindrical body 2 made of the plastic to the joint node body 1 and the space part 4 sectioned by the joint node body 1 is formed inside the joined cylindrical body. The space part 4 is turned to an air-tight state hidden by the joint node body 1 and the cylindrical body 2. The joint node body 1 is provided with a flange part 10 to be projected in a node flange shape from the outer peripheral of the joined cylindrical body at the time of forming the joined cylindrical body and joint parts 11 and 12 joined with the wall part of the cylindrical body 2 in a tightly adhered state. Also, the joint node body 1 and the cylindrical body 2 are molded by a molding resin material mixed with a foamed material, the joined cylindrical body is reduced in weight and this cylindrical body is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic tubular body obtained by combining a tubular body and a knot, and a method of manufacturing the plastic tubular body.

[0002]

2. Description of the Related Art As a method of using bamboo, a bamboo is floated on the sea surface, a thread is hung on the bamboo,
There is a method of using bamboo for cultivating marine products by attaching shellfish or seaweed to this thread.

[0003] This is because the bamboo has an airtight space formed by knots, and the bamboo is easily floated by the airtight space.
Even if marine products are suspended from bamboo, the bamboo does not submerge.

However, since bamboos are corroded and deteriorated by seawater and the impact of waves, damaged bamboos must be replaced from time to time, and a large amount of bamboos must be used to form a wide farm. Today, bamboo forests are decreasing, and bamboos are now expensive, requiring alternatives to bamboos.

[0005] The applicant has attached a joint member such as a bamboo node to a plastic tubular member, provided an airtight space between the tubular member and the joint member, and provided a tube which easily floats on water. Focusing on the formation of a shape, the present invention has been completed in conjunction with a method of forming a container by applying this technology.

[0006]

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

A plurality of plastic tubular bodies 2 are joined to both sides of one or a plurality of jointed joints 1 to form a joined tubular body 3. The present invention relates to a plastic tubular body, wherein a space portion 4 defined by the joint node 1 is formed.

Further, in the plastic tubular body according to the first aspect, the jointed joint body 1 is provided in a state of protruding from the outer periphery of the continuous tubular body 3 in the form of a node flange. It concerns the body.

Further, the joint 1 or the cylindrical body 2 is formed from a molding resin material mixed with a regenerated resin material such as a poorly formed resin material or a waste resin material. And a method for manufacturing a plastic cylindrical body having a desired shape by joining them.

Further, in the method for manufacturing a plastic tubular body according to claim 3, the joint tubular body 1 or the tubular body 2 is molded from a molded resin material mixed with a foam material. It relates to a manufacturing method of

Further, in the method for producing a plastic tubular body according to any one of claims 3 and 4, the joint node 1 or the tubular body 2 is molded from a molding resin material mixed with a volume increasing material 7. The present invention relates to a method for producing a plastic tubular body, characterized in that:

Further, in the method for manufacturing a plastic tubular body according to any one of claims 3 to 5, a fibrous material 8 for reinforcing the joint node body 1 or the tubular body 2 is mixed or wound. The present invention relates to a method for producing a plastic tubular body, characterized by being molded with a molded resin material.

Further, a plastic flared tubular body 5 'is joined to the joint node 1 or the tubular body 5 is spliced and deformed in a flared shape. The present invention relates to a method for manufacturing a body.

Further, in the method for manufacturing a plastic tubular body according to the present invention, the flared tubular body 5 'joined with the jointed joint body 1 is made of a recycled resin material such as a poorly formed resin material or a waste resin material. Or a synthetic resin formed by mixing a foamed material or a synthetic resin material mixed with a foaming material or a synthetic resin material mixed with a volume-increasing material 7 and, if necessary, mixed or wound with a fiber material 8 for reinforcing the strength. The present invention relates to a method for producing a plastic tubular body, characterized by being molded from a material.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention (how to implement the invention) will be briefly described with reference to the drawings, showing the operational effects thereof.

According to the first aspect of the present invention, a plurality of plastic tubular bodies 2 are joined to both sides of one or more jointed joint bodies 1 to form a joined tubular body 3. Since the space portion 4 defined by the joint node 1 is formed in the joint cylindrical body 3, the bamboo can be used as a substitute for bamboo which easily floats on water and can be used for cultivation of marine species. Plastic tubular body a
Becomes

Further, since the joining tubular body 3 has a shape close to that of a bamboo, it can be easily imitated as a bamboo by an appropriate means such as attaching a bamboo-shaped backing to the surface.

Further, when the joint tubular body 3 is subjected to deformation processing, the tubular shape of the tubular body 2 is unlikely to be deformed by gas or the like in the space portion 4, and the joint tubular body 3 is distorted accordingly. Therefore, the deformation processing can be easily performed without causing the deformation.

According to the second aspect of the present invention, since the jointed joint 1 is provided in a protruding state from the outer periphery of the jointed cylindrical body 3 in the form of a knotted collar, the jointed cylindrical body 3 further approaches the shape of bamboo. As a result, the joint cylindrical body 3 can be more easily imitated as bamboo.

Further, when the joint tubular body 3 is subjected to deformation processing, the jointed joint body 1 projecting in the form of a knotted collar serves as a reinforcing material so that the deformation processing can be performed easily, and further, the joint tubular body 3 can be deformed easily. The rigidity of the body 3 is increased.

According to the third aspect of the present invention, the joint member 1 or the cylindrical member 2 is formed from a molding resin material mixed with a recycled resin material such as a molding resin material or a waste resin material. Since the plastic cylinder a having a desired shape is manufactured by joining the body 1 and the cylinder 2, the specific gravity of the resin is light, the resin easily floats on the water, and the resin is easy to mold, suitable for mass production, and recycled. Suitable plastic cylinder a with low raw material cost
Can be manufactured.

According to the fourth aspect of the present invention, since the joint node 1 or the cylindrical body 2 is molded from a molded resin material mixed with a foaming material, the amount of resin used in the production of the plastic cylindrical body a can be reduced. In addition, the weight of the plastic tubular body a can be reduced.

According to the fifth aspect of the present invention, since the jointed joint 1 or the cylindrical body 2 is molded from a molded resin material mixed with the volume increasing material 7, the amount of resin at the time of manufacturing the plastic cylindrical body a is reduced. It is possible to reduce the shrinkage (shrinkage) of the resin at the time of resin molding, and it is possible to easily mold even the large joint node 1 or the cylindrical body 2 by integral molding or the like. Become.

According to the sixth aspect of the present invention, the joint material 1 or the cylindrical body 2 is formed of a molding resin material in which a fiber material 8 for reinforcing the strength is mixed or wound. Is used, the fiber materials 8 mixed at the time of resin molding are entangled with each other to increase the strength of the jointed body 1 or the tubular body 2, and the fiber material 8 is wound. If you use molded resin material,
The joint material 1 or the tubular body 2 is maintained in shape by the fibrous material 8, and the strength is inevitably increased.

According to the seventh aspect of the present invention, a plastic flared tubular body 5 'is joined to the joint node 1 or the tubular body 5 is spliced and deformed into a flared shape. In addition, it is possible to easily mold the container-shaped plastic tubular body b without integrally molding using a complicated mold.

In the invention according to claim 8, the flared tubular body 5 'for joining the jointed joint 1 is formed of a molding resin material mixed with a regenerated resin material such as a defective molding resin material or a waste resin material. Molding provides a method of producing a plastic cylinder that is easy to mold, suitable for mass production, and low in raw material cost, suitable for recycling.

Further, if the cylindrical member 5 'is molded from a molded resin material mixed with a foaming material, the amount of resin can be saved and the weight can be reduced when the cylindrical member 5' is manufactured.

Further, if the cylindrical body 5 'is molded from a molding resin material mixed with the volume increasing material 7, the amount of resin at the time of manufacturing the cylindrical body 5' can be reduced, and the amount of resin during resin molding can be reduced. The sink (shrinkage) can be reduced, and the cylindrical body 5 'having a large volume can be easily formed.

Further, if a synthetic resin material in which the fiber material 8 for reinforcing the strength is mixed or wound as necessary is molded, for example, if a molding resin material in which the fiber material 8 is mixed is used, the resin molding is performed. The sometimes mixed fiber materials 8 are entangled with each other to increase the strength of the tubular body 5 ′. Further, if a molding resin material in which the fiber material 8 is wound is used, the tubular body 5 ′ is formed by the fiber material 8. Is maintained in shape, and strength is inevitably increased.

[0030]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate two specific embodiments of the invention.

FIGS. 1 to 4 show a first embodiment, in which a joining cylinder 1 is joined to a plastic tubular body 2 to form a joining cylinder 3. The present invention relates to a bamboo-shaped plastic tubular body a in which a space 4 defined by the joint 1 is formed in a tubular body 3. The space 4 is concealed by the joint 1 and the tubular body 2 and is in an airtight state.

The joining joint body 1 has a flange portion 10 projecting from the outer periphery of the joining tubular body 3 in a knotted flange shape when the joining tubular body 3 is formed.
And joint portions 11 and 12 that are joined to the wall of the tubular body 2 in close contact with each other.

The joint tube 1 and the cylindrical member 2 are molded from a molding resin material mixed with a foaming material, and the joint cylindrical member 3 is transported and installed by reducing the weight of the joint cylindrical member 3. Is easy.

The joint 1 and the cylindrical body 2 are molded from a molding resin material mixed with a volume increasing material 7.
In addition, the amount of resin material used for the tubular body 2 is reduced.
Therefore, shrinkage (shrinkage) of the resin during resin molding of the joint 1 and the cylindrical body 2 is reduced, and the joint 1 and the cylindrical body 2 having a large volume can be easily formed by integral molding. It becomes possible. If a resin which does not mix the volume increasing material 7 is used, the resin sink is large at the time of integrally molding the jointed joint 1 and the cylindrical body 2, and the appearance of the surface such as shaving the surface of the molded product is improved. May need to be processed.

The joint node 1 and the cylindrical body 2 are formed of a resin material in which a fiber material 8 for reinforcing the strength is mixed or wound. Further, in the first embodiment, the fibrous material 8 is mixed into the resin material, and the fibrous materials 8 are entangled with each other to reinforce the strength of the jointed body 1 and the tubular body 2.
A fibrous material 8 (glass fiber, carbon fiber, or the like) is wound around the joint 1 and the tubular body 2 to further reinforce the strength. Further, the strength can be reinforced by attaching a large number of fiber materials 8 in a biased state, or by winding or attaching a knitted fiber in a mesh shape (illustrated in FIGS. 7 and 8).

The volume increasing material 7 will be described in detail.

As the volume increasing material 7, it is desirable to use an aggregate that does not melt at the molding temperature of the resin material. Specifically, ore, calcined soil, etc. are used,
A foamed ore (such as obsidian pearlite, pumice or vermiculite, or a product obtained by firing and hardening soil or clay at a high temperature) is used. In particular, since the latter has the small voids 18 inside the volume increasing material 7, the effect of reducing the weight of the resin material is produced.

A specific method of manufacturing the plastic tubular body a of the first embodiment will be described in detail.

The jointed joint 1 is previously formed separately.

The plastic tubular body 2 is formed continuously by extrusion or the like.

Before the cylindrical body 2 is hardened, the cylindrical body 2 is cut into a predetermined length, and the joint 2 is joined to the cylindrical body 2.
After this step is continuously performed to form the jointed tubular body 3 having a desired length, the jointed joint body 1 is joined together with the curing of the tubular body 2.

In the case of performing deformation processing such as bending of the joint cylindrical body 3, deformation processing is performed before the above-mentioned cylindrical body 2 is hardened, or the joint cylindrical body 3 is heated to a plasticizing temperature. It is good to perform deformation processing.

Since the first embodiment is configured as described above,
Since it has the space portion 4, it becomes a plastic tubular body a which can easily float on water and can be used as a substitute for bamboo which can be used for marine culture.

Further, since the joining tubular body 3 has a shape close to a bamboo, it can be easily imitated as a bamboo by an appropriate means such as attaching a bamboo-shaped mount on the surface.

Further, when the joining tubular body 3 is subjected to deformation processing, the gas in the space portion 4 hardly deforms the tubular shape of the tubular body 2, and furthermore, the joining projecting in the form of a nodal collar. Articulation 1
Plays a role of a reinforcing member, so that deformation processing can be easily performed, and deformation processing can be easily performed without causing distortion in the joint tubular body 3.

Further, since the joint node 1 and the cylindrical body 2 are formed of a resin material, the specific gravity is light, the float is easy to float on water, and the molding is easy and suitable for mass production.

Further, since the jointed joint 1 and the cylindrical body 2 are molded from a molding resin material mixed with a foaming material, the amount of resin during production can be saved and the jointed cylindrical body 3 can be reduced in weight. Becomes

Further, since the jointed joint 1 and the cylindrical body 2 are molded from a molding resin material mixed with the volume increasing material 7, the amount of resin at the time of manufacturing can be reduced, and the resin shrinkage at the time of resin molding is reduced. (Shrinkage) can be reduced, and even the joint node 1 and the tubular body 2 having a large volume can be easily integrally formed.

Further, since the jointed joint 1 and the tubular body 2 are molded from a molding resin material in which the fiber material 8 for reinforcing the strength is mixed, the fiber materials 8 mixed in the resin molding are entangled with each other and joined. The strength of the knot 1 and the cylindrical body 2 is increased.

Further, since the joint node 1 and the cylindrical member 2 are formed from a molding resin material in which a fiber material 8 for reinforcing the strength is wound, the joint member 1 and the cylindrical member 2 are Is maintained in shape, and the strength of the joint node 1 and the cylindrical body 2 is inevitably increased.

The plastic cylindrical body a of the first embodiment
Can be used as a piping material for soft ground utilizing its high rigidity. In this case, a hole is formed in the joint 1 and the space 4 is provided in a communicating state.

FIGS. 5 and 6 show a second embodiment, in which a tubular member 5 is joined to a joint node 1 made of the same material as in the first embodiment. 5 relates to a method of manufacturing a plastic tubular body b in which the upper portion of the plastic tubular body 5 is deformed in a divergent shape (cylindrical body 5 ′).

More specifically, first, the jointed joint 1 is formed as a separate body, and the cylindrical body 5 is formed by extrusion or the like. , And the joint 5 is joined to the tubular body 5 to deform the upper portion of the tubular body 5 into a divergent shape. To be joined.

The joint 1 and the cylindrical member 5 of the first embodiment can be used as they are as the joint 1 and the cylindrical member 5.

Instead of joining the tubular body 5 to the joint 1, a tubular body 5 ′ formed in advance and diverging may be joined to the joint 1.

Since the second embodiment is configured as described above,
It is possible to easily mold the container-shaped plastic tubular body b without using integral molding using a complicated mold.

Further, the manufactured plastic tubular body b
If the upper part of the cylindrical body 5 is divergent, it is easy to store the stored items inside. If the lower part of the cylindrical body 5 is divergent, the stored items can be stored inside. Do not jump outside.

Regarding the effects of the material,
The rest is the same as in the first embodiment.

By providing a hole in the joint 1,
The plastic tubular body b can be used as a flower pot.

It should be noted that a plastic tubular body b obtained by simply joining the tubular body 5 to the jointed joint body 1 can also be used as a container, and can also be used as a container or a pencil stand.

In the first and second embodiments described above,
If a poorly formed resin material or waste reclaimed resin material is used as the molding resin material or a waste material is used as the volume increasing material 7, the joint joint 1 or the cylindrical member 2,5.
5 'can be manufactured, and resource saving can be achieved. At this time, the joint body 1 and the cylindrical body 2
Since the surface of 5.5 ′ is not good in appearance, it is preferable to appropriately treat the surface to improve the appearance of the appearance depending on the method of use.

FIGS. 7 to 15 illustrate molding resin materials used in the first and second embodiments. In the figure, reference numeral 6 denotes a resin layer, 9 denotes a surface layer imitating a bamboo appearance, and 19 denotes a void formed by a foam material. Therefore, the jointed body 1 and the cylindrical bodies 2, 5,.
5 'is to be formed in a rice cake-like structure.

[0063]

As described above, according to the first aspect of the present invention, a plurality of plastic tubular bodies are joined to both sides of one or more joint nodes. An alternative to bamboo, which forms a tubular body and forms a space defined by the jointed joints in the jointed tubular body, so that it is easy to float on water and can be used for marine culture. It becomes a plastic cylinder excellent in practicality that can be obtained.

Also, since the joining cylindrical body is close to the shape of a bamboo,
For example, it is possible to easily imitate a bamboo by an appropriate means such as attaching a bamboo-shaped mount on the surface.

Further, when the joint tubular body is subjected to deformation processing, the tubular shape of the tubular body is unlikely to be deformed by gas or the like in the space portion, so that the joint tubular body is not distorted and simple. It becomes a plastic cylinder excellent in workability and rigidity that can be deformed.

According to the second aspect of the present invention, since the jointed node is provided in a state of protruding from the outer periphery of the jointed tubular body in the form of a knotted collar, the jointed tubular body further approaches the shape of bamboo. The jointed tubular body can be more easily imitated as bamboo.

Further, when a deformation process is applied to the joint cylindrical body, the joint node projecting in the form of a knotted collar serves as a reinforcing material so that the deformation processing can be performed easily, and furthermore, the joint cylindrical body can be deformed easily. The rigidity is enhanced and the workability is also excellent.

According to the third aspect of the present invention, the joint or cylindrical member is formed of a molding resin material mixed with a regenerated resin material such as a poorly formed resin material or a waste resin material. Since the desired shape of the plastic tubular body is manufactured by joining the tubular body, the specific gravity of the resin is light and the resin is easy to float on water,
Further, the present invention provides a method for producing a plastic tubular body which is easy to mold, suitable for mass production, and low in raw material cost suitable for recycling.

According to the fourth aspect of the present invention, since the joint member or the cylindrical body is molded from a molded resin material mixed with a foaming material, the amount of resin used in the production of the plastic cylindrical body can be reduced, and the plastic cylindrical body can be saved. The weight of the body can be reduced.

According to the fifth aspect of the present invention, since the joint member or the cylindrical body is molded from a molding resin material mixed with a volume increasing material, it is possible to reduce the amount of resin during the production of the plastic cylindrical body. It is possible to reduce shrinkage (shrinkage) of resin at the time of resin molding, and it is possible to easily mold large joint joints and cylindrical bodies by integral molding etc. And a method of manufacturing a plastic cylindrical body.

In the invention according to claim 6, the joint node or the cylindrical body is formed from a molding resin material in which a fiber material for reinforcing the strength is mixed or wound.
If a resin material with mixed fiber materials is used, the fiber materials mixed during resin molding are entangled with each other to increase the strength of the jointed joint or the cylindrical body, and the molding in which the fiber material is wound If a resin material is used, the joint material or the tubular body will be retained in shape by the fibrous material, and a method of manufacturing a plastic tubular body with excellent rigidity, which will inevitably increase the strength. Become.

According to the seventh aspect of the present invention, since a plastic flared tubular body is joined to the joint node or the tubular body is spliced and deformed into a flared shape, a complicated gold The present invention provides a method of manufacturing a plastic cylinder excellent in productivity, which enables simple molding of a container-shaped plastic cylinder without using integral molding using a mold.

According to the eighth aspect of the present invention, the flared tubular body to be joined with the jointed joint is formed of a molded resin material mixed with a regenerated resin material such as a defective molding resin material or a waste resin material. In addition, the present invention provides a method for producing a plastic cylindrical body which is easy to mold, suitable for mass production, and suitable for recycling, and has a low raw material cost.

Further, if the cylindrical body is molded from a molded resin material mixed with a foaming material, the amount of resin at the time of manufacturing the cylindrical body can be reduced.
In addition, the weight can be reduced.

Further, if the cylindrical body is molded from a molding resin material mixed with a volume increasing material, the amount of resin during the production of the cylindrical body can be reduced, and shrinkage (shrinkage) of the resin during resin molding can be reduced. It is possible to reduce the size, and it is also possible to easily mold a large volume cylindrical body.

Further, if a synthetic resin material in which a fiber material for reinforcing the strength is mixed or rolled is used as necessary, for example, if a molding resin material in which the fiber material is mixed is used, the fiber material may be mixed in the resin molding. The fibrous material entangled with each other increases the strength of the tubular body, and if a molded resin material in which the fibrous material is wound is used, the fibrous material will maintain the shape of the tubular body, which is inevitable. In this way, the strength is improved.

[Brief description of the drawings]

FIG. 1 is an explanatory side partial sectional view of a first embodiment.

FIG. 2 is an explanatory perspective view of the first embodiment.

FIG. 3 is an explanatory perspective view showing a usage example of the first embodiment.

FIG. 4 is an explanatory perspective view of the first embodiment.

FIG. 5 is an explanatory perspective view of a second embodiment.

FIG. 6 is an explanatory perspective view of a second embodiment.

FIG. 7 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 8 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 9 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 10 is an explanatory sectional view illustrating an example of a resin material according to the present embodiment.

FIG. 11 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 12 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 13 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 14 is an explanatory sectional view showing an example of the resin material of the present embodiment.

FIG. 15 is an explanatory sectional view showing an example of the resin material of the present embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 jointed joint body 2 tubular body 3 jointed tubular body 4 space portion 5.5 ′ tubular body 7 volume increasing material 8 fiber material a plastic tubular body

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B29K 105: 26

Claims (8)

[Claims] 1. A joining cylindrical body is formed by joining a plurality of plastic tubular bodies on both sides of one or more joining joint bodies, and the joining tubular body is formed in the joining tubular body. A plastic tubular body, wherein a space sectioned by a node is formed. 2. The plastic tubular body according to claim 1, wherein said joint node is provided in a state protruding from an outer periphery of said joint tubular body into a knotted flange shape. 3. A spliced joint or cylindrical body is formed from a molded resin material mixed with a regenerated resin material such as a poorly formed resin material or a waste resin material, and the spliced joint body and the tubular body are joined. Producing a plastic tubular body having a desired shape. 4. The method for producing a plastic tubular body according to claim 3, wherein the jointed body or the tubular body is molded from a molded resin material mixed with a foaming material. Method. 5. The method for producing a plastic tubular body according to claim 3, wherein the jointed body or the tubular body is molded from a molding resin material mixed with a volume increasing material. A method for producing a plastic tubular body. 6. The molding resin according to claim 3, wherein a fiber material for reinforcing the joint node or the cylindrical body is mixed or wound. A method for producing a plastic tubular body, characterized by being molded from a material. 7. A method for manufacturing a plastic tubular body, characterized in that a plastic flared tubular body is joined to a joint node, or a tubular body is joined and deformed in a flared shape. . 8. The method for manufacturing a plastic tubular body according to claim 7, wherein the flared tubular body to which the joints are joined is mixed with a recycled resin material such as a poorly formed resin material or a waste resin material. Molded with a molded resin material or a molded resin material mixed with a foaming material or a synthetic resin material mixed with a volume-increasing material, and molded with a synthetic resin material mixed or wound with a fiber material that reinforces the strength as necessary. A method for producing a plastic tubular body, characterized by comprising: