JP2009107326A - Production process and production equipment of long material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a production process and a production equipment of a long material, which allow increasing duration of filtration function despite upgraded filtration of a polymer material. <P>SOLUTION: A polymer material 92 bearing powdery solid mass is supplied to a channel 40 for molding material. The channel 40 is equipped with a filter medium 3 which has a first part 3a for trapping solid masses larger than a given size and a second part 3b for moderate filtration. A long material 90 is obtained, by flowing to downstream of the channel 40 and extruding from an extrusion opening 42b, of a first filtrate polymer material 92a and a second filtrate polymer material 92b in mutually distinguished state; provided that in the long material 90, emergence of foreign substances to a desired range of its surface (a surface comprising the material 92a) is inhibited, and that the first filtrate polymer material 92a and the second filtrate polymer material 92b respectively have passed through the first part 3a and the second part 3b. The duration leading to clogging of the filter medium 3 is protracted by moderating filtration of the material 92b which composes those parts not affecting quality of the surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a long material by extrusion molding of a polymer material and a production apparatus used for the method.

  In producing a long material (long polymer material product) by extrusion molding of a polymer material, various polymer materials are widely used as the polymer material used for the extrusion molding. For example, thermoplastic polymer materials (typically thermoplastic resins such as PVC, ABS, PP, PE, PA, thermoplastic elastomers such as TPO, TPS, TPU), thermosetting polymer materials (typically Is often used as a polymer material including a polymer curable by crosslinking (vulcanization) such as rubber such as EPDM and NR. In order to improve the mechanical properties of the extruded product, such a polymer material may be used by mixing a powdered solid (filler) in the material. Further, even if the polymer material is subjected to extrusion molding without intentionally mixing (compounding) a powdered solid, during the molding process of the polymer material for extrusion molding (for example, a strand before molding pellets) Solid matter may be generated in the process during molding. For example, when the polymer material is an unvulcanized rubber material containing a rubber component and a vulcanizing agent, vulcanization is partially started in the kneading step, whereby solids (for example, solids of fine spherical rubber) ) May occur, or the vulcanization accelerator may agglomerate to form a solid.

When extrusion molding is performed using a polymer material containing a solid material (powder filler) that is intentionally blended as described above or a solid material that is unintentionally generated (mixed), The solid matter may appear on the surface (the solid matter thus appearing on the surface of the extruded product is referred to as “foreign matter” or “pox”). The appearance of such a solid is not preferable because it can cause the following problems.
(1). When the extruded product is a molded product that requires decorativeness on the outer surface (for example, a decorative trim member used for decoration of vehicles, etc.), the appearance quality of the molded product is degraded. Let Furthermore, when surface treatment such as painting is performed in a post-process on the extruded molded product, the appearing solid matter tends to be remarkably visually recognized.
(2). When the extruded product is a molded product (for example, a weather strip for a vehicle) used in a state of being fitted to another article (attached body), the solid A fitting failure may occur depending on the object.
(3). When the extruded molded product is a molded product that requires smooth inner surface (for example, a pipe that allows fluid to flow), the solid matter that appears is vortexed into the fluid that flows inside. May be caused, and the flow resistance may be increased. Furthermore, there is a possibility that the solid matter is peeled (detached) from the molded body and mixed into the fluid.

  As a method for preventing the occurrence of such a problem, a cross section of the flow path (in the adapter or extrusion mold of the apparatus, typically in the flow path of the polymer material) Mesh (typically a “net” or “screen” knitted by crossing a large number of metal wires, or a perforated plate in which a large number of pores are formed in a thin metal plate so as to cover the entire opening area Hereinafter, there is a method in which these are collectively referred to simply as “mesh”))) and the polymer material is filtered (filtered). By using a fine mesh as the mesh, or by laminating a plurality of meshes to increase the degree of filtration (that is, increasing the rate at which solid matter is not captured and flowed downstream) The above problems can be solved.

However, when the degree of filtration of the polymer material by the mesh is increased, solid matter is deposited on the mesh in a shorter time than before, and the filtering action is reduced. In other words, the higher the degree of filtration of the mesh, the shorter the time until solid matter accumulates on the mesh and the filtration action does not work (clogging). In such a state, it becomes necessary to discontinue extrusion and disassemble the device, and replace the mesh with a new one.
In addition, as shown in Patent Document 1, when a mesh is clogged using a belt-shaped mesh, the mesh is moved in the longitudinal direction of the belt and replaced with a new mesh (this method is called “Auto Screen”). It is also called “changer”.) However, in the above auto screen changer method, in addition to the high equipment cost, the mesh is moved (slid) while the high extrusion pressure (back pressure) of the molten resin is applied to the mesh. May be difficult to move smoothly. Furthermore, there may be a problem that the molten resin leaks from the gap for moving the mesh.

JP-A-6-278191

  The present invention relates to the production of a long material (long polymer material product) by extrusion molding of a polymer material, and the long material capable of maintaining the filtering action for a longer time even when the filtration degree by a mesh is increased. An object is to provide a manufacturing method and a long material manufacturing apparatus (extrusion molding apparatus) used in the manufacturing method.

The long material manufacturing method enumerated below is provided by this invention.
That is, the invention of claim 1 is directed to an extruding part having an extruding head at the tip of a cylinder having a screw driven to rotate inside, an inlet provided downstream of the extruding head and adapted to the tip of the cylinder, or the tip. A powdered solid was blended using an extrusion molding apparatus including a molding material flow path that connects an inlet that is larger than the inner diameter of the nozzle and an extrusion port that is downstream of the inlet. And it is a long material manufacturing method which manufactures a long material by extruding and supplying the mixed polymer material from the cylinder and extruding it into a long shape having a predetermined cross-sectional shape from the extrusion port of the molding part. In the manufacturing method, the swirl flow direction of the polymer material that is extruded and supplied while swirling in the shape of the molding material flow path from the cylinder toward the downstream side by the screw is different from the swirl flow direction. The rectifying means for rectifying by changing the rectifying means and the filtering means arranged at the same position as the rectifying means or upstream of the rectifying means are provided. Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. The first portion is subjected to filtration that allows the passage of water, and the second portion is subjected to coarser filtration or substantially no filtration than the first portion. The polymer material that has passed through the filtering means is substantially mixed with the first filtered polymer material that has passed through the first part and the second filtered polymer material that has passed through the second part on the downstream side of the filtering means. While maintaining the distinguished state without matching, the inside of the molding material flow path is caused to flow downstream, and the first filtration polymer material and the second filtration polymer material are separated in the molding material flow path. Each is formed into a predetermined cross-sectional shape, and both materials are laminated and integrated at the extrusion port or in the vicinity thereof to continuously form an intermediate long material, and thereafter, the intermediate long material is configured. The polymer material is cured or solidified.

According to the long material manufacturing method of claim 1, it is possible to easily manufacture a long material in which solid matter (foreign matter) does not appear on the surface of a predetermined range, and the time until the filtering means is clogged. Can be prolonged. As a result, the operation can be continued for a longer time than before without interrupting the extrusion molding operation.
In the present specification, “a polymer material in which powdered solids are blended and / or mixed” refers to powdered solids blended intentionally and unintentionally mixed (for example, during the molding process). A polymeric material containing at least one of the powdered solids generated in

According to a second aspect of the present invention, in the manufacturing method according to the first aspect, the molding portion includes an adapter attached to the extrusion head, and the adapter is an adapter inlet that matches a tip of the cylinder in the molding material flow path. Alternatively, the first flow path connecting the adapter inlet enlarged from the inner diameter of the tip and the adapter outlet downstream of the inlet is provided inside, and the rectifying means and the filtering means are both provided in the first flow path. It is a thing.
According to the manufacturing method of Claim 2, the effect that the effect which the manufacturing method of Claim 1 show | plays can be implement | achieved better is acquired.

According to a third aspect of the present invention, in the manufacturing method of the first or second aspect, at least the molding material flow path downstream of the position where the rectifying means and the filtering means are provided is formed in a linear shape or a continuous curved shape. The first filtration polymer material and the second filtration polymer material that have passed through the rectifying means and the filtration means are linearly or continuously maintained while being distinguished from each other without substantially mixing up to the extrusion port. It flows in a molding material flow path formed in a curved shape.
According to the manufacturing method of Claim 3, in addition to the effect which the manufacturing method of Claim 1 or 2 has, the effect that a 1st filtration polymer material can be more appropriately arrange | positioned in the desired position of a elongate material is acquired. It is done.

According to a fourth aspect of the present invention, in the manufacturing method according to any one of the first to third aspects, the rectifying means includes a plurality of polymer materials that are extruded and supplied while swirling from the cylinder toward the downstream side by the screw. And the flow direction of the polymer material is changed so that each of the branched polymer materials flows in the non-swirling flow direction different from the swirl flow direction on the downstream side of the rectifying means. And is configured to rectify.
According to the manufacturing method of Claim 4, in addition to the effect which the manufacturing method in any one of Claim 1 to 3 shows, the 1st filtration polymer material can be more appropriately arrange | positioned in the desired position of a long material. An effect is obtained.

According to a fifth aspect of the present invention, in the manufacturing method of the fourth aspect, the straightening flow is newly realized by canceling the swirl flow for each of the polymer materials divided into the plurality of the rectifying means. As described above, the polymer material is temporarily swiveled in a reverse turning direction opposite to the turning direction.
According to the manufacturing method of Claim 5, the effect that the effect which the manufacturing method of Claim 4 show | plays can be implement | achieved better is acquired.

The invention of claim 6 is the manufacturing method according to any one of claims 1 to 5, wherein the filtration area of the first portion of the filtration means is set to be larger than the reference cross-sectional area of the molding material flow path corresponding to the first portion. By enlarging, the passing amount of the polymer material per unit area / unit time in the enlarged first portion is set to the unit area / unit time in the reference cross section of the molding material flow path. It is moved downstream while filtering while keeping it smaller than the passing amount of the polymer material.
Here, the “reference cross-sectional area of the molding material flow path corresponding to the first portion” is perpendicular to the extending direction of the molding material flow path at the position where the filtering means is provided in the molding material flow path ( This is the projected area when the first part is projected onto an (orthogonal) plane. “The amount of passage of the polymer material per unit area / unit time in the enlarged first portion” means the unit area of the first portion having a larger (enlarged) filtration area than the reference cross-sectional area per unit time. The amount of polymer material that passes through. Similarly, “the passage amount of the polymer material per unit area / unit time in the reference cross section” refers to the amount of the polymer material that passes the unit area of the reference cross section per unit time.
According to the manufacturing method of claim 6, in addition to the effect produced by any of the manufacturing methods of claims 1 to 5, the effect that the time until the mesh is clogged can be further prolonged is obtained.

The invention of claim 7 is the manufacturing method according to any one of claims 1 to 6, wherein as the filtering means, a filter medium composed of a mesh forming an eye having a predetermined roughness is used, and the filter medium includes the filter medium. The first part is formed by a finer mesh than the second part, or is formed by increasing the number of meshes laminated than the second part.
According to the manufacturing method of claim 7, in addition to the effects of the manufacturing method of any of claims 1 to 6, the degree of filtration by the first part and the second part as necessary (the first part and the second part) The degree of filtration) can be effectively adjusted.

The invention according to claim 8 is the manufacturing method according to claim 7, wherein a part of the cross section of the molding material flow path divided (for example, divided in the circumferential direction) corresponds to the first part as the filter medium. Using a filter medium, the first filtered polymer material that has passed through the first portion continuously covers a part of the outer surface of the second filtered polymer material along the longitudinal direction. It is extruded from the extrusion port.
According to the manufacturing method of claim 8, in addition to the effect produced by the manufacturing method of claim 7, the effect that the first filtered polymer material can be appropriately arranged at a desired position of the long material is obtained.

The invention according to claim 9 is the manufacturing method according to claim 7, wherein the filter medium is a filter medium having a configuration in which the outer peripheral side of the molding material flow path is annularly formed as the first part, and passes through the first part. The first filtered polymer material is extruded from the extrusion port so that the entire circumference of the outer surface of the second filtered polymer material is continuously covered along the longitudinal direction.
According to the manufacturing method of claim 9, in addition to the effect of the manufacturing method of claim 7, there is an effect that it is possible to easily manufacture a long material in which solid matter (foreign matter) does not appear on the entire circumference of the outer surface. It is done.

The invention of claim 10 is the manufacturing method of claim 7, wherein the filter material is configured such that a filter material having a configuration in which a center side of the molding material flow path becomes the first portion, and the first material has passed through the first portion. The first filtered polymer material is surrounded by the second filtered polymer material and is continuously embedded along the longitudinal direction to extrude both polymer materials from the extrusion port.
According to the manufacturing method of claim 10, in addition to the effect of the manufacturing method of claim 7, it is possible to more easily manufacture a long material (for example, a pipe) in which solid matter (foreign matter) does not appear on the surface on the center side. The effect is obtained.

The invention according to claim 11 is the manufacturing method according to any one of claims 7 to 10, wherein the filter medium has a ratio of an area of a part constituting the first part and an area of a part constituting the second part. The ratio of the area of the part constituting the first part is larger than the ratio of the area of the first filtration polymer material constituent part and the area of the second filtration polymer material constituent part in the cross section of the molded long material. As a result, the flow rate per unit time of the first filter polymer material that has passed through the filter medium is decreased over time, while the flow rate of the second filter polymer material is increased in inverse proportion. It is something to be made.
According to the manufacturing method of claim 11, in addition to the effect produced by any of the manufacturing methods of claims 7 to 10, there is an effect that the time until the first portion of the filter medium is clogged can be further prolonged. It is done.

The invention of claim 12 is the manufacturing method according to any one of claims 1 to 11, wherein the molding is performed until the first filter polymer material and the second filter polymer material are merged in the vicinity of the extrusion port or upstream thereof. The material flow is divided in the material flow path.
According to the manufacturing method of claim 12, in addition to the effect produced by any of the manufacturing methods of claims 1 to 11, a laminar flow state can be maintained until the first filtration polymer material and the second filtration polymer material are merged. Therefore, the effect that the 1st filtration polymer material can be arrange | positioned more appropriately in the desired position of a long material is acquired.

According to a thirteenth aspect of the present invention, in the manufacturing method according to any one of the first to twelfth aspects, the first filtration polymer material and the second filtration polymer material are divided and flowed in the molding material flow path to the extrusion port. The molded bodies made of the respective polymer materials are joined on the downstream side of the extrusion port.
According to the manufacturing method of claim 13, in addition to the effect produced by any of the manufacturing methods of claims 1 to 12, the first filtration polymer material and the second filtration polymer material are mixed upstream of the extrusion port. Can be prevented more reliably.

According to a fourteenth aspect of the present invention, in the manufacturing method according to the twelfth or thirteenth aspect, a physical partition is formed along the flow direction between the first filtered polymer material and the second filtered polymer material that have passed through the filtering means. It is provided to flow the respective polymer materials to the downstream side of the molding material flow path while preventing mixing of both polymer materials.
According to the manufacturing method of claim 14, in addition to the effect produced by the manufacturing method of claim 12 or 13, it is further ensured that the first filtered polymer material and the second filtered polymer material are mixed upstream of the extrusion port. The effect that it can prevent is acquired.

According to a fifteenth aspect of the present invention, in the manufacturing method according to any one of the first to fourteenth aspects, the polymer material extruded and supplied from the cylinder is disposed upstream of the filtration means in the direction toward the first portion of the filtration means. Guide means for diverting in the direction to the two parts is provided.
According to the manufacturing method of Claim 15, in addition to the effect which the manufacturing method in any one of Claim 1 to 14 shows, the effect that a polymer material can be effectively supplied to the 1st part is acquired.

According to a sixteenth aspect of the present invention, in the manufacturing method according to any one of the first to fifteenth aspects, the polymer material is a thermoplastic polymer material (a thermoplastic polymer material having a composition in which a powdered solid is blended with a thermoplastic polymer). The thermoplastic polymer material is heated and extruded in a molten state, and the solid elongate material made of the extruded thermoplastic polymer material is cooled to perform the solidification process.
According to the manufacturing method of claim 16, in addition to the effects produced by any of the manufacturing methods of claims 1 to 15, the solid material intentionally blended in the thermoplastic polymer material or unintentional to the thermoplastic polymer material It is said that it is possible to easily produce a long material in which solid matter (foreign matter) does not appear on the surface of a desired predetermined range by appropriately capturing the solid matter (for example, solid matter generated in the granulation process) mixed in An effect is obtained.

According to a seventeenth aspect of the present invention, in the manufacturing method of the sixteenth aspect, a thermoplastic elastomer containing a rubber component is used as the thermoplastic polymer material (typically, as a polymer constituting the thermoplastic polymer material). It is.
According to the manufacturing method of claim 17, in addition to the effect exhibited by the manufacturing method of claim 16, the use of a highly useful thermoplastic elastomer prevents a solid matter (foreign matter) from appearing on the desired surface. The effect that a scale can be manufactured easily is acquired.

An eighteenth aspect of the present invention is the manufacturing method of the seventeenth aspect, wherein the thermoplastic elastomer is an olefinic thermoplastic elastomer (TPO) containing a rubber component.
According to the manufacturing method of claim 18, in addition to the effect of the manufacturing method of claim 17, solid (foreign matter) appears on the surface of a desired range using a highly useful olefinic thermoplastic elastomer. The effect that the long material which does not carry out can be manufactured easily is acquired.

According to a nineteenth aspect of the present invention, in the manufacturing method according to any one of the first to fifteenth aspects, the polymer material is a vulcanizable unvulcanized rubber material (unvulcanized rubber, powdered solid, vulcanizing agent, vulcanized The unvulcanized rubber material having a composition appropriately blended with one or two or more types selected from accelerators, etc.), and the unvulcanized rubber material was extruded in an unvulcanized state. The intermediate long material made of an unvulcanized rubber material is heated and vulcanized to perform the curing treatment.
According to the manufacturing method of Claim 19, in addition to the effect which the manufacturing method in any one of Claims 1-15 show | plays, it is unintentionally in the solid substance and the rubber material which are mix | blended intentionally in unvulcanized rubber material Thus, it is possible to appropriately capture the solid matter mixed in and to easily produce a long material in which the solid matter (foreign matter) does not appear on the desired surface.

According to a twentieth aspect of the present invention, in the manufacturing method of the nineteenth aspect, as the polymer material, an unvulcanized rubber material formed by kneading a powdery filler mainly containing EPDM is used.
According to the manufacturing method of claim 20, in addition to the effect produced by the manufacturing method of claim 19, a long material in which solid matter (foreign matter) does not appear on a desired surface in a desired range using EPDM having high utility Can be produced easily.

According to a twenty-first aspect of the present invention, in the manufacturing method according to any one of the first to twentieth aspects, the inlet of the molding material flow path is an inlet larger than the inner diameter of the tip of the cylinder, and the filtering means It is comprised so that it may have an effective outer diameter larger than the internal diameter of a front-end | tip.
According to the manufacturing method of claim 21, the effective outer diameter (D2: that is, the region through which the polymer material can pass) of the filtering means (typically a filtering material constituted by a mesh) provided in the molding material flow path. The same applies hereinafter) is made larger than the inner diameter (D1) of the tip of the cylinder, so that the time until the filtering means is clogged can be further prolonged.

According to a twenty-second aspect of the present invention, in the manufacturing method according to any one of the first to twenty-first aspects, the elongate material is a weather strip for a vehicle having a cross-sectional shape formed in an irregular shape.
According to the manufacturing method of claim 22, in addition to the effect of the manufacturing method of any one of claims 1 to 21, it is possible to easily provide a weather strip for a vehicle in which solid matter (foreign matter) does not appear on a desired surface of a predetermined range. The effect that it can manufacture is acquired.

Moreover, the following elongate material manufacturing apparatus is provided by this invention.
That is, the invention of claim 23 is directed to an extruding portion having an extruding head at the tip of a cylinder having a screw driven to rotate inside, an inlet provided downstream of the extruding head and adapted to the tip of the cylinder, or the tip. A molding part provided with a molding material flow path connecting an inlet expanded from the inner diameter of the nozzle and an extrusion port downstream of the inlet, and a polymer in which powdered solids are blended and / or mixed It is a long material manufacturing apparatus for manufacturing a long material by extruding and supplying a material from the cylinder and extruding the material into a long shape having a predetermined cross-sectional shape from an extrusion port of the molding part. In the molding material flow path, the swirl flow direction of the polymer material extruded and fed while being swirled from the cylinder toward the downstream side by the screw is changed to a non-swirling flow direction different from the direction to rectify. Rectifying means is provided. A filtering means is provided at the same position as the rectifying means or upstream of the rectifying means. Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. The first portion is subjected to filtration that allows the passage of water, and the second portion is subjected to coarser filtration or substantially no filtration than the first portion. The polymer material that has passed through the filtering means is substantially mixed with the first filtered polymer material that has passed through the first part and the second filtered polymer material that has passed through the second part on the downstream side of the filtering means. It is configured to flow in the downstream of the molding material channel while maintaining the distinguished state without matching, and the first filtered polymer material and the first in the molding material channel. 2 Filter polymer materials are each molded into a predetermined cross-sectional shape, and both materials are laminated and integrated continuously at the extrusion port or in the vicinity thereof to form an intermediate long material, and then the intermediate length The polymer material constituting the scale member is configured to be cured or solidified.
According to the manufacturing apparatus of claim 23, it is possible to easily manufacture a long material in which solid matter (foreign matter) does not appear on the surface of a predetermined range, and to prolong the time until the filtering means is clogged. can do. As a result, the operation can be continued for a longer time than before without interrupting the extrusion molding operation.

According to a twenty-fourth aspect of the present invention, in the manufacturing apparatus of the twenty-third aspect, the molding part includes an adapter attached to the extrusion head, and the adapter is an adapter inlet that matches a tip of the cylinder in the molding material flow path. Alternatively, a first flow path that connects an adapter inlet that is larger than the inner diameter of the tip and an adapter outlet that is downstream of the inlet is provided inside, and both the rectifying means and the filtering means are provided in the first flow path. It is what has been.
According to the manufacturing apparatus of Claim 24, the effect that the effect which the manufacturing apparatus of Claim 23 show | plays can be implement | achieved better is acquired.

According to a twenty-fifth aspect of the present invention, in the manufacturing apparatus according to the twenty-third or twenty-fourth aspect, the mixing preventing means for preventing the first filtered polymer material and the second filtered polymer material from mixing downstream of the rectifying means. Is provided.
According to the manufacturing apparatus of claim 25, in addition to the effect produced by the manufacturing apparatus of claim 23 or 24, a laminar flow state can be effectively maintained on the downstream side of the rectifying means, so that the long material is at a desired position. The effect that the 1st filtration polymer material can be arranged more appropriately is acquired.

According to a twenty-sixth aspect of the present invention, in the manufacturing apparatus according to any one of the twenty-third to twenty-fifth aspects, the polymer material extruded and supplied from the cylinder is disposed upstream of the filtering means in the direction toward the first portion of the filtering means Guide means for diverting in two directions is provided.
According to the manufacturing apparatus of Claim 26, in addition to the effect which the manufacturing apparatus of any of Claim 23 to 25 show | plays, the effect that a polymer material can be effectively supplied to the 1st part of a filtration means is acquired.

According to a twenty-seventh aspect of the present invention, in the manufacturing apparatus according to any one of the twenty-third to twenty-sixth aspects, the filtering means is configured by a mesh that forms an eye having a predetermined roughness, and the first portion is more than the second portion. The filter medium is formed of a fine mesh, or the first portion is formed by increasing the number of meshes stacked compared to the second portion.
According to the manufacturing apparatus of claim 27, in addition to the effect of the manufacturing apparatus of any of claims 23 to 26, the degree of filtration by the first part and the second part (first part and second part) by a simple apparatus configuration. The effect that the degree of filtration of the portion can be effectively adjusted is obtained.

The invention of claim 28 is the manufacturing apparatus of claim 27, wherein the first portion of the filter medium is formed in a partial shape obtained by dividing a transverse section of the molding material flow path in the circumferential direction. .
According to the manufacturing apparatus of claim 28, in addition to the effect produced by the manufacturing apparatus of claim 27, it is further easier to make a long material in which solid matter (foreign matter) does not appear on a part of the outer peripheral surface of the long material. The effect that it can be manufactured is obtained.

According to a twenty-ninth aspect of the present invention, in the manufacturing apparatus of the twenty-seventh aspect, the first portion of the filter medium is formed in an annular shape on the outer peripheral side of the molding material flow path.
According to the manufacturing apparatus of claim 29, in addition to the effect produced by the manufacturing apparatus of claim 27, there is an effect that it is possible to more easily manufacture a long material in which solid matter (foreign matter) does not appear on the entire circumference of the outer surface. can get.

The invention of claim 30 is the manufacturing apparatus of claim 27, wherein the first portion of the filter medium is formed in a circular shape on the center side of the molding material flow path.
According to the manufacturing apparatus of claim 30, in addition to the effect produced by the manufacturing apparatus of claim 27, it is possible to more easily manufacture a long material (for example, a pipe) in which solid matter (foreign matter) does not appear on the surface on the center side. The effect is obtained.

The invention of claim 31 is the manufacturing apparatus according to any one of claims 27 to 30, wherein at least the first portion of the filter medium is constituted by a laminated mesh portion formed by laminating a plurality of meshes. is there.
According to the manufacturing apparatus of claim 31, in addition to the effect produced by any of the manufacturing apparatuses of claims 27 to 30, an effect that the degree of filtration of the first portion can be effectively adjusted with a simple configuration is obtained.

The invention according to claim 32 is the manufacturing apparatus according to claim 31, wherein the laminated mesh portion has a mesh opening so that the upstream side of the molding material flow path is coarser and the downstream side is finer. A plurality of meshes different from each other are laminated.
According to the manufacturing apparatus of the thirty-second aspect, in addition to the effect produced by the manufacturing apparatus of the thirty-first aspect, the effect that the entire surface can be efficiently used for filtration while suppressing clogging of a fine mesh is obtained.

The invention of claim 33 is the manufacturing apparatus of claim 32, wherein at least one mesh coarser than the mesh arranged on the most downstream side of the laminated mesh portion is arranged on the downstream side of the laminated mesh portion. It is what is done.
According to the manufacturing apparatus of claim 33, in addition to the effect produced by the manufacturing apparatus of claim 32, the fine mesh arranged on the downstream side in a state of floating in the flow path is supported from the downstream side by the coarse mesh. Therefore, the effect that the entire surface of the fine mesh can be used for the filtration more efficiently is obtained.

The invention of claim 34 is the manufacturing apparatus according to any one of claims 23 to 33, wherein the inlet of the molding material flow path is an inlet larger than the inner diameter of the tip of the cylinder, and the filtering means is provided on the cylinder. It is comprised so that it may have an effective outer diameter larger than the internal diameter of a front-end | tip.
According to the manufacturing apparatus of claim 34, the effective outer diameter (D2) of the filtering means (typically a filter medium constituted by a mesh) provided in the molding material flow path is set to the inner diameter (D1) of the tip of the cylinder. By making it larger than this, the time until the filtering means is clogged can be further prolonged.

Moreover, the following elongate materials are provided by this invention.
That is, the invention of claim 35 is a long material formed into a predetermined cross-sectional shape by extruding a polymer material mixed with and / or mixed with a powdery solid, and the following production Method:
An extrusion section provided with an extrusion head at the tip of a cylinder having a screw driven to rotate therein, an inlet provided downstream of the extrusion head and compatible with the tip of the cylinder, or an inlet enlarged from the inner diameter of the tip and the inlet Using an extrusion molding apparatus provided with a molding material flow path that connects a molding material flow path connecting the extrusion port on the downstream side, and feeding the polymer material from the cylinder,
In the molding material flow path, the swirl flow direction of the polymer material extruded and fed while being swirled from the cylinder toward the downstream side by the screw is changed to a non-swirling flow direction different from the direction to rectify. Rectifying means to be provided, and filtering means disposed at the same position as the rectifying means or upstream of the rectifying means,
Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. A first portion that is filtered to permit passage of the second portion, and a second portion that is coarser or substantially not filtered than the first portion,
The polymer material that has passed through the filtering means is substantially mixed with the first filtering polymer material that has passed through the first part and the second filtering polymer material that has passed through the second part on the downstream side of the filtering means. Without distinguishing and maintaining the distinguished state, the inside of the molding material flow path is allowed to flow downstream,
The first filtration polymer material and the second filtration polymer material are each molded into a predetermined cross-sectional shape in the molding material flow path, and the two materials are continuously laminated and integrated at or near the extrusion port. To form an intermediate long material,
Thereafter, a process for curing or solidifying the polymer material constituting the intermediate long material;
And a molded part made of the first filtered polymer material and a molded part made of the second filtered polymer material.
The long material of claim 35 is useful for various applications because no solid matter (foreign matter) appears on the surface of a desired range.

A thirty-sixth aspect of the present invention is the long material of the thirty-fifth aspect, wherein a surface portion visually observed at the time of use is formed by a molded portion made of the first filtration polymer material.
According to the long material of Claim 36, in addition to the effect which the long material of Claim 35 show | plays, the effect that it is excellent in external appearance quality is acquired.

The invention of claim 37 is the long material of claim 35, wherein the entire outer surface is formed by a molded part made of the first filtered polymer material.
According to the long material of Claim 37, in addition to the effect which the long material of Claim 35 show | plays, attachment property is good (For example, generation | occurrence | production of the fitting malfunction resulting from the foreign material which appeared on the surface is avoided). The effect is obtained.

A thirty-eighth aspect of the present invention is the long member of the thirty-fifth aspect, wherein the elongated member is formed in a structure having an outer surface and an inner surface, and the entire inner surface is formed by a molding portion made of the first filtration polymer material. It is.
According to the long material of claim 38, in addition to the effect produced by the long material of claim 35, it is excellent in smoothness of the inner surface, so that the fluid can flow smoothly into the long material, Further, the effect of preventing foreign matter from being mixed into the fluid can be obtained.

  Hereinafter, preferred embodiments of the present invention will be described. Note that matters other than matters specifically mentioned in the present specification and necessary for the implementation of the present invention (for example, general matters relating to extrusion molding such as an operation method of an extruder) are all related to the prior art. It can be grasped as a design matter of those skilled in the art based on the above. The present invention can be carried out based on matters disclosed in the present specification and drawings and common general technical knowledge in the field.

  The long material manufactured by this manufacturing method has a long resin extrusion molded body as a main body, and there is no particular limitation on the presence or absence of other elements (attached portions). In addition, the polymer material (molding material) used is mainly a solid material (typical) composed of an extrudable polymer represented by a thermoplastic resin, unvulcanized rubber, etc. May be a polymer material that can include at least one of powdered) and unintentionally generated (mixed) solids (typically powdered), and the other components are not particularly limited. In the present specification, “vulcanization” means to include crosslinking of polymers by various crosslinking reactions, and is not limited to crosslinking using sulfur as a crosslinking agent (vulcanizing agent). That is, in this specification, “vulcanization” and “crosslinking” are used interchangeably unless otherwise specified.

  The thermoplastic resin constituting the matrix component of the polymer material may be a general-purpose resin or an engineering resin (so-called engineering plastic), and may be a crystalline resin or an amorphous resin. For example, polypropylene (PP), acrylonitrile butadiene styrene copolymer (ABS), acrylonitrile ethylene propylene rubber styrene copolymer (AES), polyamide (PA), polycarbonate (PC), polyacetal (POM), polyethylene (PE), polystyrene (PS), polyphenylene oxide (PPO), polymethyl methacrylate (PMMA) and the like. In addition to these, various grades of polyvinyl chloride (PVC), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and the like can be used. When consideration is given to the environment, a resin containing no halogen such as chlorine is preferable, and an olefin resin such as polyethylene and polypropylene is particularly preferable from the viewpoint of recyclability.

  Examples of the unvulcanized (uncrosslinked) rubber constituting the matrix component of the polymer material include natural rubber (NR), ethylene propylene rubber (EPM), ethylene propylene diene rubber (EPDM), styrene butadiene rubber (SBR), Butadiene rubber (BR), butyl rubber (IIR), nitrile butadiene rubber (NBR), chloroprene rubber (CR), or the like can be used. When consideration is given to the environment, a rubber containing no halogen such as chlorine is preferable.

  In addition to the above, various thermoplastic elastomers (for example, olefin-based, styrene-based, and vinyl-based) can be suitably used as the matrix component of the polymer material. In particular, from the viewpoint of recyclability, for example, an olefinic thermoplastic elastomer (TPO) whose hard segment is an olefinic resin is preferable. A thermoplastic elastomer (for example, rubber) containing a rubber component such as EPM, EPDM, styrene-butadiene-styrene block copolymer (SBS), styrene-isoprene-styrene block copolymer (SIS) as a soft segment An olefinic thermoplastic elastomer containing a component and having a hard segment of an olefinic resin) is preferred.

  In carrying out the present invention, a polymer material (molding material) having one kind of exemplified polymers (thermoplastic resin, unvulcanized rubber, etc.) as a matrix component may be used, or two kinds or three kinds. You may use the polymer material which uses the polymer complex and polymer alloy which consist of the above polymer as a matrix component.

  The polymeric material used can contain various subcomponents. As a suitable example of such a subcomponent, a solid filler in a powder form (not limited to a substantially spherical one, but includes a short fibrous form, a flake shaped form, etc. The same shall apply hereinafter). Can be mentioned. Any solid filler of this type can be used without particular limitation as long as it has stable physical properties (typically those conventionally used as fillers). Examples thereof include metal powders such as ceramic powder (including various inorganic compound powders such as talc; the same shall apply hereinafter), carbon powder (for example, carbon black), wood powder, and iron powder. Preferred ceramic powders include powders such as oxides, silicates and carbonates (typically having a particle size of 1 μm to 1000 μm). Silicates include talc, clay, mica, glass beads and the like, and talc is particularly preferable from the viewpoint of improving strength. Examples of the oxide include silica, alumina, titanium oxide, zinc oxide, magnesium oxide, and pumice. Examples of the carbonate include calcium carbonate and magnesium carbonate. As another example of the powdery solid filler, a fibrous organic material composed of short fibrous ceramic fibers, carbon fibers, plants and the like (for example, cotton) is exemplified. Preferable examples of the ceramic fiber include glass fiber, boron fiber, and silicon carbide fiber having a diameter of about 0.1 to 500 μm, and glass fiber is particularly preferable. The content (rate) of such a filler may vary depending on the type of filler used and the use of the long material. Typically, it is preferable to include the filler at a ratio of approximately 1 to 60% by mass of the entire polymer material.

  Other examples of subcomponents that can be included in the polymer material include components for curing the polymer material by crosslinking, such as sulfur-based, peroxide-based and other crosslinking agents, and crosslinking accelerators. Examples of the sulfur-based crosslinking (vulcanizing) agent include inorganic sulfur (for example, powdered sulfur, precipitated sulfur, colloidal sulfur), organic sulfur compounds (for example, morpholine disulfide, alkylphenol disulfide) and the like. Examples of peroxide crosslinking agents include benzoyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di- (t-butylperoxy) -hexane, 1,1′-di-t-butylperoxy-3. , 3,5-trimethylenecyclohexane, 1,3-di- (t-butylperoxy) -diisopropylbenzene and the like. These components can be used in appropriate amounts in appropriate combinations according to conventional methods.

  In addition, the polymer material can contain various auxiliary components as required. Examples of such auxiliary components include antioxidants, light stabilizers, UV absorbers, plasticizers, lubricants, colorants, flame retardants, dispersants, antibacterial agents, and antistatic agents.

  Such a polymer material can be prepared in a desired form by various conventionally known methods. For example, a mixture of an olefinic thermoplastic elastomer material and a powdery filler in a predetermined ratio can be kneaded with a kneading extruder and extruded into a strand, and then pelletized.

  Next, a preferred embodiment for producing a long material based on the production method according to the present invention will be described in detail with reference to the drawings. In addition, in the following drawings, the same code | symbol is attached | subjected to the member and site | part which show | plays the same effect | action, and the overlapping description may be abbreviate | omitted or simplified.

<First embodiment>
FIG. 1 is an explanatory view showing an outline of an extrusion production line (extrusion molding apparatus 1) provided with a filtration device 2 (see FIG. 2) according to the first embodiment, and FIG. 2 is a cross-sectional view showing an essential part thereof. is there. The extrusion molding apparatus 1 roughly includes an extruder 10 provided with a hopper 11 and a molding machine 20 provided downstream of the extruder 10. On the downstream side of the molding machine 20, a process for curing or solidifying a polymer material constituting the intermediate long material 90 extruded from the extrusion mold outlet 42b of the molding machine 20 (crosslinking promotion process, cooling process, etc.) The processing tank 19 which performs at least one of these is equipped. The treatment tank 19 is, for example, cooled by cooling a polymer material containing a thermoplastic polymer material as a matrix component (main component) (a powdered filler may or may not be blended). May be performed (a process of cooling and solidifying the polymer material extruded in a molten state) may be performed. Further, a polymer material (unvulcanized) obtained by kneading a powdery filler in a matrix component (mainly) a vulcanizable unvulcanized rubber material (preferred example is EPDM). A rubber material) may be heated and vulcanized to cure the polymer material. A long polymer material product (long material) can be obtained by cutting the intermediate long material 90 subjected to such treatment into a predetermined length. The cross-sectional shape of the long material is typically substantially the same as the cross-sectional shape of the intermediate long material 90. Therefore, in the following description, a long material obtained by subjecting the intermediate long material 90 extruded from the extrusion mold outlet 42b of the molding material flow path 40 to a predetermined process may be represented by reference numeral 90.

  The extruder 10 is a general single-screw extruder, and includes a hopper 11 that supplies a polymer material (molding material) of pellets or other shapes, and a cylinder 12 that feeds the material in a distal direction while melting the material. . As shown in FIG. 2, a cylinder channel 17 is formed inside the cylinder 12, and a screw 14 is accommodated in the channel 17. The extruder 10 rotationally drives the screw 14 by transmitting the power of the motor 16 via the belt 15 shown in FIG. 1, thereby causing the polymer material 92 in the cylinder flow path 17 to move toward the tip of the cylinder 12 (downstream direction). ) To be pushed out from a cylinder head 13 provided at the tip of the cylinder 12.

  As shown in FIG. 2, the molding machine 20 includes an adapter 22 and an extrusion mold 30 connected to the tip of the adapter 22 using a fixing nut 37. The adapter 22 is fixed to the cylinder head 13 using an adapter ring 23 and a fastening bolt 24. A hinge 25 that can be opened and closed with a hinge pin 26 as an axis is attached to the cylinder head 13 and the adapter ring 23. A molding material channel 40 communicating with the cylinder channel 17 is formed inside the molding machine 20. The molding material flow path 40 is a flow path provided inside the adapter 22 and has a circular (cylindrical) first flow path 41 having a circular cross-section from the adapter inlet 41a that matches the tip of the cylinder 12 to the adapter outlet 41b. And a second flow path 42 provided in the extrusion mold 30 and connected to the adapter outlet 41b from the extrusion mold inlet 42a to the extrusion mold outlet 42b. It is formed to extend substantially linearly (in the left-right direction in FIG. 2). The polymer material 92 extruded and supplied from the cylinder head 13 of the cylinder 12 to the molding material flow path 40 has a predetermined cross-sectional shape according to the purpose from the extrusion mold outlet 42b constituting the extrusion port of the molding material flow path 40. As an intermediate long material 90 having a length, it is extruded in a long shape. Then, the long material 90 which has the predetermined | prescribed cross-sectional shape and length according to the objective can be obtained by giving a predetermined process and cut | disconnecting.

  Although not particularly limited, in this embodiment, as shown in FIG. 9, a long material 90 formed into a deformed (substantially T-shaped) cross-sectional shape having a head portion 95 and a leg portion 96 as shown in FIG. This is an example of manufacturing (for example, a vehicle roof molding that is a kind of long decorative trim member). As shown in FIG. 2, the second flow path 42 constitutes a land flow path portion 34 whose downstream side is formed in substantially the same cross-sectional shape as the intermediate long material 90, and its upstream side extends from the adapter outlet 41 b to the land flow path. It can be set as the shape which comprises the change flow-path part 32 in which a cross-sectional shape changes gradually toward the part 34. FIG. In this embodiment, the opening shape of the adapter outlet 41b (that is, the outlet of the first flow path 41) is circular, and the change flow path portion 32 has a circular cross-sectional shape from the adapter outlet 41b toward the land flow path portion 34. It is formed so as to gradually change from a substantially T-shape.

  In the molding material flow path 40, a filtering means for filtering the polymer material 92 moving in the flow path 40 and comprising a plurality of meshes (mesh packs) forming eyes with a predetermined roughness. 3, a rectifier (breaker plate) 80 that is arranged in contact with the mesh on the downstream side of the filter medium 3, supports the mesh from the downstream side, and rectifies the polymer material 92 that has passed through the mesh, and on the upstream side of the filter medium 3 A filter device 2 is provided that includes a guide ring 50 that is disposed in contact with the rectifier 80 and that sandwiches the outer periphery of the filter medium 3 and diverts the polymer material 92. That is, the filtration device 2 has a configuration in which the guide ring 50, the filtering material 3, and the rectifier 80 are arranged adjacent to each other in order from the upstream side of the molding material flow path 40. In the extrusion molding apparatus 1 of the present embodiment, the filtration device 2 is provided at the upstream end of the molding material flow path 40 (that is, the inlet of the first flow path 41 formed in the adapter 22), and the fastening bolt 24 is removed and the hinge 25 is opened to separate the cylinder 12 and the adapter 22 so that the arrangement and maintenance of the filtration device 2 (for example, replacement of the mesh constituting the filter medium 3, cleaning, etc.) can be easily performed. It is configured.

  The filtration part 61 through which the polymer material 92 passes among the filter media 3 is an upper half obtained by dividing the transverse section of the molding material flow path 40 into upper and lower parts shown in FIG. 2 (that is, divided in the circumferential direction at a central angle of 180 degrees). A semicircular first portion 3a corresponding to the portion and a semicircular second portion 3b corresponding to the lower half portion are included. The guide ring 50 crosses the inner diameter of the molding material flow path 40 along the diameter of the guide ring 50 in the horizontal direction (that is, so as to partition the molding material flow path 40 up and down), and upstream of the molding material flow path 40. And a partition 53 provided so as to protrude from the top. The partition 53 functions as a guide means for diverting the polymer material 92 extruded and supplied from the cylinder 12 toward the downstream side in the direction toward the first portion 3a and the direction toward the second portion 3b of the filter medium 3. Have Further, the rectifier 80 crosses the inner diameter of the molding material flow path 40 in the horizontal direction along the diameter of the rectifier 80 (that is, so as to partition the molding material flow path 40 up and down), and downstream of the molding material flow path 40. A partition 83 is provided so as to protrude from the top. The partition 83 is configured so that the first filter polymer material 92a that has passed through the first portion 3a of the filter medium 3 and the second filter polymer material 92b that has passed through the second portion 3b are physically extended to at least the downstream end of the partition 83. In a state of being divided into parts (to prevent the merging of both materials 92a and 92b) and to flow downstream.

3A is an explanatory view schematically showing a shape of the guide ring 50 constituting the filtration device 2 as viewed from the upstream side of the molding material flow path 40, FIG. 3B is a view in the direction of the arrow III, and FIG. It is sectional drawing which fractured | ruptured a part along the IV-IV line of 3B. However, the left half of FIG. 4 shows an arrow view when FIG. 3B is viewed from below in the figure.
The guide ring 50 is disposed in contact with the upstream side of the filter medium 3, and is formed in a semicircular shape obtained by dividing the opening shape (i.e., circular shape) of the cylinder flow path 17 opened at the tip of the cylinder 12 (cylinder head 13) vertically. Are formed. Among these, the polymer material 92 is supplied to the first portion 3 a of the filter medium 3 through the first hole 51, and the polymer material 92 is supplied to the second portion 3 b of the filter medium 3 through the second hole 52. The outer peripheral portion (ring portion) of the guide ring 50 has a material and a structure that prevents the polymer material 92 from passing therethrough. Accordingly, the holes 51 and 52 constitute a part of the first flow path 41, and the upstream end thereof constitutes the adapter inlet 41a.

  On the outer periphery of the guide ring 50, each member (the guide ring 50, the filter medium 3 and the rectifier 80 in this embodiment) constituting the filtration device 2 and means for aligning these members with the cylinder 12 in the circumferential direction. As (circumferential alignment means), at least one (preferably two or more) positioning holes 59 are provided. In this embodiment, as shown in FIG. 3A, five positioning holes 59 are provided in the vicinity of the upper end of the outer peripheral portion of the guide ring 50. Positioning holes 69 (refer to FIG. 10) and positioning holes 89 (refer to FIG. 7) as circumferential alignment means are also provided at corresponding positions of the filter medium 3 and the rectifier 80 described later. By inserting a positioning pin 58 into a receiving hole that passes through these positioning holes 59, 69, and 89 and opens to the downstream end face of the cylinder 12, each member (guide ring 50, filtering material 3) constituting the filtering device 2 is inserted. And the rectifier 80) and the circumferential alignment of these members and the cylinder 12.

  As shown in FIG. 3B, the downstream end surface 50b of the guide ring 50 is formed in a shape that matches the upstream surface shape of the filter medium 3 that faces the downstream end surface 50b. That is, the downstream end face 50b of the upper half of the guide ring 50 (the portion surrounding the first punched hole 51) has a filter medium 3 (see FIGS. 10 and 12) described later as viewed from the downstream side of the molding material flow path 40. A valley-shaped portion 56 having a shape along the mountain-shaped portion 65 and a mountain-shaped portion 55 having a shape along the valley-shaped portion 66 of the filter medium 3 are provided. On the other hand, the downstream end face 50b of the lower half of the guide ring 50 (the part surrounding the second punch hole 52) is formed in a flat surface shape that matches the surface shape (planar shape) of the second part 3b of the filter medium 3. ing. Thereby, the holding portion 62 corresponding to the outer peripheral portion of the filter medium 3 is securely sandwiched between the downstream end face 50b of the guide ring 50 and the upstream end face 80a of the rectifier 80, and the mesh constituting the filter medium 3 is deformed. And misalignment can be prevented.

  A partition 53 that extends along the diameter of the guide ring 50 and is provided so as to partition the molding material flow path 40 up and down protrudes from the upper end surface of the outer periphery of the guide ring 50 to the upstream side of the molding material flow path 40. . As shown in FIGS. 2 and 3B, the vertical cross-sectional shape of the partition 53 is a shape that gradually tapers toward the upstream side of the molding material flow path 40. Further, the downstream end surface of the partition 53 is formed in a shape that matches the surface shape of the opposing filter medium 3. By providing the partition 53 having such a shape, the polymer material 92 extruded and supplied from the cylinder 12 toward the downstream side is directed to the first part 3a and the second part 3b of the filter medium 3. And the physical separation of the diverted polymer material 92 (therefore, the polymer material 92 once diverted in the direction toward the second portion 3b is supplied to the first portion 3a). Can be reliably (forcedly) introduced into the first part 3a and the second part 3b, respectively.

  A rectifier (also referred to as a breaker plate) 80 constituting the filtering device 2 is disposed in contact with the downstream side of the filtering material 3, and its upstream end surface 80 a is formed in a shape that matches the downstream surface shape of the filtering material 3. Has been. That is, on the upstream end face 80a of the upper half of the rectifier 80 (the part facing the first part 3a of the filter medium 3), the filter medium 3 described later (FIGS. 10 and 12) as viewed from the upstream side of the molding material flow path 40. A mountain-shaped portion 85 and a valley-shaped portion 86 formed in a shape along the mountain-shaped portion 65 and the valley-shaped portion 66 of FIG. On the other hand, the upstream end surface 80a of the lower half of the rectifier 80 is formed in a flat surface shape that matches the surface shape (planar shape) of the second portion 3b of the filter medium 3. By having the upstream end surface 80a having such a shape, the back side (downstream side) of the filter medium 3 is supported by the rectifier 80, and deformation and displacement of the mesh constituting the filter medium 3 can be prevented.

  As shown in FIGS. 2 and 5 to 7, the rectifier 80 includes a large number of pieces extending substantially in parallel with the extending direction of the molding material flow path 40 (more specifically, the first flow path 41 in which the rectifier 80 is disposed). (FIGS. 5 and 7 show only a part of the molding material passage hole 82 and omit the others, and the lower half of FIG. The side is seen from the left side of the figure.) The polymer material 92 that has passed through the filter medium 3 is sent to the downstream side of the rectifier 80 through one of the molding material passage holes 82. Typically, the first filter polymer material 92a that has passed through the first portion 3a of the filter medium 3 has a molding material passage hole 82 (at least the first portion) that opens at a location facing the first portion 3a in the upstream end surface 80a. A second filtered polymeric material 92b having a pore size sized to allow passage of solids through 3a (typically having a diameter of 1.5 mm to 5 mm) and through the second portion 3b. Is a molding material passage hole 82 (a hole diameter of a size that allows at least the passage of the solid material passing through the second portion 3b (typically, a diameter of 1....) Is opened at a location facing the second portion 3b in the upstream end surface 80a. 5 mm to 5 mm), respectively, and sent to the downstream side of the rectifier 80.

  The number and arrangement of the molding material passage holes 82 are not particularly limited, and can be appropriately selected according to the embodiment. In addition, it is preferable to increase the number of molding material passage holes 82 in proportion to the diameter of the flow path so that the intervals between adjacent passage holes are equal. Further, an arrangement in which the molding material passage holes 82 are arranged in parallel to the extending direction of the mountain-shaped portion 85 and the valley-shaped portion 86, a concentric arrangement centering on the approximate center of the upstream end face 80a, and a radial arrangement (FIG. 7). Example) shown in FIG. From the viewpoint of reducing the retention of the polymer material 92, it is preferable that the molding material passage hole 82 is disposed at least at the bottom of the valley-shaped portion 86 (the portion recessed most downstream). Moreover, the hole diameter, the number, and arrangement | positioning of the molding material passage hole 82 opened to the location facing the 1st part 3a in the upstream end surface 80a and the molding material passage hole 82 opened to the location facing the 2nd part 3b are the same. Or may be different.

  A partition 83 that extends along the diameter of the rectifier 80 and is provided so as to partition the molding material flow path 40 vertically projects from the downstream end face of the rectifier 80 to the downstream side of the molding material flow path 40. The vertical cross-sectional shape of the partition 83 is a shape that gradually tapers toward the downstream side of the molding material flow path 40, as shown in FIGS. In addition, the downstream end face of the partition 83 is formed in a shape that matches the surface shape of the opposing filter medium 3. By providing the partition 83 having such a shape, the first filtered polymer material that has passed through the molding material passage hole 82 that passes through the first portion 3a of the filter medium 3 and opens at a location facing the first portion 3a. 92a and the second filtered polymer material 92b that has passed through the second portion 3b of the filter medium 3 and passed through the molding material passage hole 82 that opens at a location facing the second portion 3b, are formed on the downstream side of the rectifier 80. It can be made to flow downstream while being physically separated by the partition 83 in the material flow path 40 (thus preventing the first filtered polymer material 92a and the second filtered polymer material 92b from mixing).

  The shape of the filter medium 3 constituting the filter device 2 is shown in FIG. 10, FIG. 11A and FIG. The filter medium 3 as a whole is in the form of a sheet that intersects (typically orthogonal) with the direction in which the molding material flow path 40 extends in a portion where the filter medium 3 is disposed, and crosses the molding material flow path 40. The semi-circular mesh 60b (see FIG. 11A) disposed in the upper half of the surface as viewed from the upstream side of the molding material flow path 40, and from the upstream side of the molding material flow path 40 disposed on the upstream side and downstream side of the mesh 60b. It has a configuration in which a circular mesh 60a (see FIG. 10) and a mesh 60c are stacked. A semicircular portion (laminated mesh portion in which meshes 60 a, 60 b, and 60 c are laminated) arranged in a part of the cross section of the molding material flow path 40 (here, the upper half) of the filter medium 3 is attached to the polymer material 92. The first portion 3a performs filtration that collects solids of a predetermined size or larger that can be contained and prevents passage of solids while allowing passage of solids of less than the predetermined size. Further, since the semicircular portion (only the meshes 60a and 60c are laminated and does not have the mesh 60b) disposed in the other part (here, the lower half) in the cross section of the molding material flow path 40, the first part 3a. The portion where the number of mesh layers is small) is a second portion 3b that performs rough filtration (low filtration degree) compared to the first portion 3a. In addition, instead of the semicircular mesh 60b as shown in FIG. 11A (that is, the shape lacking the lower half of the circular shape), as shown in FIG. 11B, the second punch hole of the guide ring 50 is formed in the lower half of the circular shape. A mesh 60b having an opening having a shape corresponding to 52 (semi-circular shape) may be used.

  The mesh (aperture or opening area) of each mesh 60a, 60b, 60c constituting the filter medium 3 may be all the same and different from each other (that is, the mesh of the meshes of each other). (Including at least two different types of meshes). When the roughness of the mesh is the same, the number of mesh layers in the first portion 3a (mesh 60a, 60b in FIG. 12) is larger than the number of mesh layers in the second portion 3b (two meshes 60a, 60c in FIG. 12). , 60c), the degree of filtration (filtration degree) by the first part 3a and the second part 3b is effectively adjusted, and the second part 3b is coarser than the first part 3a. The filter medium 3 which performs can be comprised. The two-dot chain line in FIG. 12 shows an example in which the mesh 60b is folded in half to form a folded portion 60b1 and the mesh 60b is laminated. As another aspect of the filter medium 3 in which the second portion 3b performs coarser filtration than the first portion 3a, a finer mesh than the mesh constituting the second portion 3b is disposed only in the first portion 3a ( This example) is illustrated. For example, as the mesh 60b shown in FIG. 12 (mesh arranged only in the first part 3a), a finer mesh than the meshes 60a and 60c (mesh arranged in the first part 3a and the second part 3b) is used. It is an aspect to do. Or you may use the mesh formed so that the upper half (1st part 3a) may become finer than the lower half (2nd part 3b) among one mesh. According to the filter medium 3 having such a configuration, even when the first portion 3a and the second portion 3b have the same number of mesh layers, the second portion 3b can perform coarser filtration than the first portion 3a. .

  About the preferable lamination mode and the effect of the mesh in the case where at least the first portion 3a of the filter medium 3 is constituted by laminating a plurality of meshes having different meshes (opening or opening area). This will be described with reference to the schematic diagram shown in FIG. 11C. In FIG. 11C, for easy understanding, the outer shape of the mesh and the shape of the upstream end surface 80a of the rectifier 80 are both planar and the wire diameter of the mesh is enlarged. As a preferable aspect, the upstream side of the molding material flow path 40 has a coarser mesh (larger opening), and the downstream side has a finer (smaller opening), and a plurality of layers stacked in order. The 1st part 3a comprised as a lamination | stacking mesh part containing meshes M1-M3 (It may be a lamination | stacking mesh part formed by laminating | stacking only mesh M1, M2, M3.) Is illustrated. According to the first part 3a having such a configuration, a large-sized solid substance (not shown) among solids having a predetermined size or larger (solid substance to be captured by the first part 3a) is an upstream mesh (for example, mesh M1). ) And does not reach the downstream mesh. Therefore, it is possible to reduce the amount of solid matter deposited by directly contacting a fine mesh (for example, mesh M3) among solid matter to be captured. Thereby, a fine mesh can be efficiently used for filtration.

  As a more preferable stacking mode of the mesh constituting the first portion 3a, the mesh arranged in the most downstream side of the stacked meshes (that is, the stacked layers) is further downstream of the meshes stacked in the above order. The mesh is finer than the finest mesh, here the mesh M3), more preferably at least one mesh having a larger wire diameter and higher rigidity and smaller diameter than the diameter of the molding material passage hole 82 of the rectifier 80. A laminated mode is exemplified. For example, the meshes M1 to M3 in FIG. 11C are stacked in the order shown, and the mesh M4 is further stacked on the downstream side of the mesh M3. More downstream than the meshes arranged on the most downstream side of the above-mentioned stacked meshes, on the downstream side of the plurality of meshes stacked in the order in which the meshes on the upstream side are coarser and the meshes on the downstream side are finer Two or more meshes having a coarse mesh, more preferably a large wire diameter and a high rigidity may be laminated (preferably, the meshes that are on the downstream side become coarser). For example, a stack formed by further stacking a supporting mesh Ms in which meshes M4 and M5 are stacked in the order shown on the downstream side of the filtration mesh Mf in which the meshes M1 to M3 in FIG. 11C are stacked in the order shown. The first part 3a configured as a mesh part is preferred. According to the first portion 3a having such a configuration, a fine mesh (for example, the mesh M3) is floated in the flow path (a state in which a space is maintained apart from the upstream side without contacting the upstream end face 80a of the rectifier 80). Since the mesh is supported from the downstream side by a coarse mesh arranged on the downstream side, the entire surface of the fine mesh can be used for filtration more efficiently. Therefore, the time until the mesh is clogged can be further prolonged. Further, the downstream side of the fine mesh is a coarser mesh (more preferably, a metal wire having a larger wire diameter is crossed and knitted, the rigidity is high and the diameter is smaller than the diameter of the molding material passage hole 82 of the rectifier 80. Therefore, it is possible to obtain an effect of preventing fine mesh deformation and damage against the flow of the molding material.

When the 2nd part 3b of the filter medium 3 is also comprised by laminating | stacking the some mesh from which the roughness (opening or opening area) mutually differs, the preferable lamination | stacking aspect of those meshes is the 1st part 3a. It is the same. For example, the 2nd part 3b of the structure which laminated | stacked the meshes M1 and M2 in FIG. 11C in this order from the upstream is preferable. According to the second portion 3b having such a configuration, the entire surface of the fine mesh M2 can be effectively used for filtration, and coarser filtration can be performed as compared with the first portion 3a. Moreover, the 2nd part 3b of the structure which laminated | stacked mesh M1, M2, M5 in FIG. 11C or mesh M1, M2, M4, M5 in this order from the upstream may be sufficient. According to the second portion 3b having such a configuration, the entire surface of the fine mesh M2 can be effectively used for filtration, and the time until the mesh M2 is clogged can be further prolonged. Further, the downstream side of the fine mesh is a coarser mesh (more preferably, a metal wire having a larger wire diameter is crossed and knitted, the rigidity is high and the diameter is smaller than the diameter of the molding material passage hole 82 of the rectifier 80. Therefore, the effect of preventing deformation and damage of a fine mesh can be obtained.
In addition, the 2nd part 3b of the filter medium 3 may be comprised as a part in which filtration is not performed substantially. For example, the meshes 60a and 60c shown in FIG. 12 have a semicircular shape with only the upper half similar to the mesh 60b shown in FIG. 11A, or have openings in the lower half like the mesh 60b shown in FIG. 11B. It is realizable by setting it as the shape which has.

  For example, as shown in FIG. 11C, the rectifier 80 is preferably formed in a shape in which at least the edge of the opening on the inlet side of the molding material passage hole 82 is chamfered on a flat surface or a curved surface. Thus, the polymer material 92 that has passed through the filter medium 3 can be efficiently guided and introduced into the molding material passage hole 82. Further, it is possible to prevent the periphery of the opening of the molding material passage hole 82 from being lost due to impact or stress, and to avoid an event in which the solid material (debris of the rectifier 80) generated by the loss is mixed into the polymer material 92. it can. It is also preferable to use a rectifier 80 having a shape in which both of the inlet and outlet edges of the molding material passage hole 82 are chamfered on a flat surface or a curved surface.

  The mesh 60a and the mesh 60c constituting the filter medium 3 have substantially the same outer shape. Further, the outer shape of the mesh 60b constituting the first portion 3a is substantially the same as the outer shape of the upper half of the mesh 60a, 60c (that is, the portion constituting the first portion 3a). Accordingly, the outer shape of the mesh constituting the first portion 3a will be described using the mesh 60a arranged on the most upstream side as a representative example. A portion constituting the first portion 3a of the mesh 60a (hereinafter, also referred to as “first portion 3a of the mesh 60a”) is a portion facing the first punch hole 51 of the guide ring 50, and is a molding material flow path. It consists of a plurality of portions inclined at an angle exceeding 0 degrees and below a right angle with respect to the extending direction of 40. In the present embodiment, the plurality of portions include a plurality of first inclined surfaces 63 inclined at an angle of approximately 30 to 60 degrees (for example, approximately 45 degrees) with respect to the extending direction of the molding material flow path 40, and the molding material flow path 40. A plurality of second slopes 64 inclined at an angle of approximately 30 to 60 degrees (for example, approximately 45 degrees) on the opposite side to the first slope 63 with respect to the extending direction (and therefore at an inclination angle different from the first slope). are categorized. The first inclined surfaces 63 and the second inclined surfaces 64 are alternately arranged adjacent to each other, thereby forming a concavo-convex structure in which the inclination directions of adjacent portions are staggered. In the present embodiment, both the first slope 63 and the second slope 64 are configured as a belt-like portion, and the belt-like first slope 63 and the second slope 64 are adjacent to each other in the width direction (which share one side in the width direction). As a result, the first portions 3a of the mesh 60a are arranged in one predetermined direction (that is, the width direction of the first inclined surface 63 and the second inclined surface 64) when viewed from the upstream side of the molding material flow path 40. Are formed in a shape (waveform) in which a plurality of mountain-shaped portions 65 and valley-shaped portions 66 are continuously formed. In FIG. 10, a portion (mountain line) that protrudes to the most upstream side of the mountain-shaped portion 65 is indicated by a solid line, and a portion (valley line) that is recessed to the most downstream side of the valley-shaped portion 66 is indicated by a dotted line.

  By having such an outer shape, the first portion 3a of the mesh 60a has a reference cross-sectional area S1 of the molding material flow path 40 corresponding to the first portion 3a in the portion where the mesh 60a is disposed (the first portion of the guide ring 50). This corresponds to a total area of the plurality of first slopes 63 and second slopes 64 facing the first punch hole 51 of the guide ring 50 substantially larger than the filtration area F1 (corresponding to the opening area of the punch hole 51). ). That is, S1 <F1. When the inclination angle of the first inclined surface 63 and the inclination angle of the second inclined surface constituting the mesh 60a are both 45 degrees, for example, the first inclined surface 63 and the second inclined surface 64 of the mesh 60a correspond to the respective inclined surfaces. It will have a filtration area that is enlarged about 1.4 times the reference cross-sectional area of the molding material flow path 40. As described above, the meshes 60b and 60c constituting the first portion 3a have substantially the same outer shape as the mesh 60a and are laminated with the mesh 60a. Therefore, the meshes 60b and 60c constituting the first portion 3a The filtration area and the filtration area of the first portion 3a are both substantially the same as the filtration area of the mesh 60a. That is, the first portion 3a of the filter medium 3 is configured to have a filtration area substantially larger (enlarged) than the reference cross-sectional area of the molding material flow path 40 corresponding to the first portion 3a. .

  On the other hand, the portion of the mesh 60a, 60c that constitutes the second portion 3b of the filter medium 3 is the portion that faces the second extraction hole 52 of the guide ring 50, and the molding material flow continues from the first portion 3a. It is formed as a semicircular plane orthogonal to the direction in which the path 40 extends.

  The operation and effect of the present invention will be described by taking as an example the case of producing a long material 90 having the shape shown in FIG. 9 using the extrusion molding apparatus 1 having such a configuration. The elongate member 90 has a substantially T-shaped cross section having a head portion 95 and a leg portion 96, and is attached to a vehicle body panel by fitting the leg portion 96 into a predetermined attachment groove. It is used as a roof molding. The outer surface of the head 95 serves as a design surface 95a that is viewed from the outside during use (that is, in a state of being attached to the vehicle). The 1st filtration polymer from which the solid substance more than predetermined size was removed by passing the 1st part 3a of the filter material 3 in the part by the side of the outer surface of the head 95 containing the design surface 95a among the elongate materials 90 A molded part made of material 92a (see FIG. 2), that is, a first filtered polymer material component 90a is arranged. On the other hand, the portion of the long material 90 that is not visible from the outside during use, that is, the lower portion of the leg portion 96 and the head portion 95 passes through the second portion 3b of the filter material 3 by passing through the second portion 3b. A molded portion of second filtered polymer material 92b (see FIG. 2) that is also coarsely filtered (or substantially unfiltered), ie, second filtered polymer material component 90b, is disposed.

  The polymer material 92 extruded from the cylinder flow path 17 of the cylinder 12 through the adapter inlet 41 a to the molding material flow path 40 by the rotation of the screw 14 shown in FIG. 2 is separated by the partition 53 of the guide ring 50. The current is diverted in the direction toward the first portion 3a and the direction toward the second portion 3b (vertical direction in FIG. 2). The divided polymer material 92 flows downstream in a state of being separated from each other by the partition 53, and passes through the first punch hole 51 and the second punch hole 52 of the guide ring 50, respectively. And introduced into the second portion 3b.

  As shown in FIG. 12, a solid material (not shown) having a predetermined size or larger that can be included in the polymer material 92 introduced into the first portion 3a (for example, a particle or a matrix having a large size contrary to the intention of the powder filler). The polymer lump (the lump that does not heat melt even when heated to the extrusion temperature), the powdered filler and the vulcanization accelerator aggregate, etc.) produced by the excessive cross-linking of the polymer as the component, The first portion 3a (for example, the mesh 60b constituting the first portion 3a) cannot be passed through and is captured. Therefore, as shown in FIG. 2, the polymer material 92 introduced into the first portion 3a is a first filtered polymer material 92a from which solids of a predetermined size or more are removed (solids smaller than the predetermined size, for example, powder As a result, the material is fed to the molding material flow path 40 above the partition 83 through the molding material passage hole 82 opened at a location facing the first portion 3a. On the other hand, the polymer material 92 introduced into the second portion 3b is a second filtered polymer material 92b that is filtered more coarsely than the first portion 3a (in addition to solids smaller than the predetermined size, the mesh 60b shown in FIG. As a result, the solid material is fed to the molding material flow path 40 below the partition 83 through the molding material passage hole 82 opened at a position facing the second portion 3b. .

  The first filtered polymer material 92a and the second filtered polymer material 92b flow to the downstream side in a state of being physically distinguished (partitioned) by the partition 83 until reaching the tip of the partition 83. Both materials 92a and 92b merge downstream of the tip of the partition 83, but take over the flow in the distinguished state and do not substantially mix (that is, the first filtration polymer material 92a and the second filtration polymer). The material 92b flows while maintaining a distinct state (preferably as a laminar flow) and flows into the second flow path 42 through the adapter outlet 41b having a circular opening shape and the extrusion mold inlet 42a. These filtered polymer materials 92a and 92b are each molded into a predetermined cross-sectional shape while passing through the change channel portion 32 of the second channel. That is, the first filtration polymer material 92a has the cross-sectional shape of the first filtration polymer material constituting portion 90a shown in FIG. 9, and the second filtration polymer material 92b is the cross-section of the second filtration polymer material constituting portion 90b shown in FIG. It is molded to have a shape. The filtered polymer materials 92a and 92b further have a stabilized cross-sectional shape by passing through the land flow path portion 34, and the first filtered polymer material 92a covers a part of the outer surface of the second filtered polymer material 92b. In a state where both materials 92a and 92b are laminated and integrated so as to continuously cover along the longitudinal direction, an intermediate long material 90 having the shape shown in FIG. 9 is continuously extruded from the extrusion mold outlet 42b. Thereafter, the long material 90 can be obtained by performing predetermined post-processing and cutting processing.

  Of the obtained long material 90, the first filtered polymer material component 90a is a molded part formed by molding the first filtered polymer material 92a that has passed through the first part 3a having a higher degree of filtration than the second part 3b. Therefore, the appearance of solid matter (foreign matter) is highly suppressed. Therefore, the long material 90 is excellent in the appearance quality and smoothness of the design surface 95a (the outer surface of the head 95). By increasing the filtration degree of the first portion 3a, it is possible to obtain a long material having a design surface 95a in which the appearance of foreign matters is suppressed to a higher degree (that is, smoother). In this way, the polymer material (the first filtration polymer material 92a) constituting the desired predetermined surface (here, the design surface 95a) is filtered by the first portion 3a having a high filtration degree, and the portion that does not affect the appearance quality is removed. The polymer material (second filtration polymer material 92b) constituting the solid material to be captured by the filter medium 3 (for example, the mesh 60b shown in FIG. 12) is collected by lowering the degree of filtration or substantially not performing filtration. The amount of collected solids) can be reduced. Therefore, the time until the mesh constituting the filter medium 3 is clogged can be prolonged, and the operation can be continued for a longer time than before without interrupting the extrusion molding operation.

  As described above, the substantial filtration area F1 of the first portion 3a is larger than the reference transverse area S1 of the molding material flow path 40 corresponding to the first portion 3a. Therefore, the amount A1 of the polymer material 92 that passes through the unit area of the first portion 3a (referred to as a unit area measured along the surface shape of the first portion 3a; the same shall apply hereinafter) per unit time is the above-mentioned reference crossing. It is smaller than the amount A0 of the polymer material 92 passing through the unit area of the surface per unit time. In the technique disclosed herein, the polymer material 92 is moved downstream while filtering the first portion 3a while maintaining the relationship of A1 <A0. As a result, compared with the case where the substantial filtration area of the first portion 3a is equal to or less than the reference cross-sectional area (in this case, A1 ≧ A0), the mesh constituting the first portion 3a is reduced. The time until clogging can be prolonged. Therefore, according to this embodiment, even if the filtration degree of the 1st part 3a is raised, the effect | action of filtration can be maintained over a longer time. As a result, since the operation can be continued for a longer time than before without interrupting the extrusion molding operation, the productivity of the long material is improved.

  The filter medium 3 has an area of a portion constituting the first portion 3a (an area when the first portion 3a is viewed from the upstream side of the molding material flow path 40 and the reference crossing of the molding material flow path 40 corresponding to the first portion 3a. S1 and the area of the part constituting the second part (the area when the second part 3b is viewed from the upstream side of the molding material flow path 40, and the reference crossing of the molding material flow path 40 corresponding to the second part 3b) The ratio S1 / S2 to S2 is equal to the ratio between the area P1 of the first filtration polymer material component 90a and the area P2 of the second filtration polymer material component 90b in the cross section of the molded long material 90. It is configured to be larger than P1 / P2 (typically substantially the same as the ratio P1 / P2 in the cross section of the long material to be manufactured) (that is, S1 / S2>). P1 / P2). In other words, the first portion 3a occupying the cross-sectional area S0 of the molding material flow path 40 is compared with the ratio P1 / P0 of the area P1 of the first filtration polymer material constituting portion 90a occupying the cross-sectional area P0 of the long material 90. It is configured such that the ratio S1 / S0 of the area S1 of the portion to be configured becomes large. In this embodiment, the area S1 of the first portion 3a and the area S2 of the second portion 3b are substantially the same, and the area P1 of the first filtration polymer material component 90a is the second filtration in the cross section of the long material 90. It is smaller than the area P2 of the polymer material constituting portion 90b (P1 <P2). Such a configuration reduces the flow rate per unit time of the first filter polymer material 92a that has passed through the filter medium 3 with the passage of time, while the flow rate of the second filter polymer material 92b is inversely proportional to the first filter polymer material 92b. This can be achieved by increasing (to compensate for the reduced flow rate of 92a). Thereby, the time until the first portion 3a of the filter medium 3 is clogged can be further prolonged.

  As described above, the molding material passage hole 82 of the rectifier 80 is formed substantially parallel to the direction in which the molding material flow path 40 extends. Accordingly, regardless of the flow direction of the polymer material 92 on the upstream side of the rectifier 80, the polymer material 92 is passed through the molding material passage hole 82, so that the polymer material 92 (which is divided by the partition 53) on the downstream side of the rectification means. The flow direction of the polymer material 92 can be aligned (corrected) so that the flow direction of each of the polymer materials 92 is a non-swirling flow direction different from the swirling flow direction. For example, the direction of swirl flow of the polymer material 92 extruded and fed while flowing in a swirl shape (spiral shape) from the cylinder 12 toward the downstream side by the rotation of the screw 14 shown in FIG. The flow can be rectified by changing in the (non-swirl flow direction). As a result, the rectifier 80 having a configuration in which the filtered polymer materials 92a and 92b that have passed through the first portion 3a and the second portion 3b are merged on the downstream side of the tip of the partition 83 or the partition 83 is not provided is used. Even in this case, the filtered polymer materials 92a and 92b are prevented from being mixed by the swirling flow, and both the materials 92a and 92b are smoothly moved downstream of the molding material flow path 40 (typically, extrusion molding). The two materials 92a, 92b can be moved to the die outlet 42b (with a distinct state without substantial mixing). As a result, the first filtered polymer material 92a (that is, the first filtered polymer material component 90a made of the material 92a) can be appropriately disposed at a desired position of the long material 90.

The shape of the meshes 60a to 60c constituting the first portion 3a is a shape in which a plurality of mountain-shaped portions 65 and valley-shaped portions 66 are continuously formed along a predetermined direction as described above ( For example, a plurality of mountain-shaped portions and valley-shaped portions are continuously formed along the intersecting direction in a direction intersecting the predetermined one direction (typically a direction substantially orthogonal). It may be a shaped shape. Also with this shape, the filtration area S1 of the first portion 3a can be made larger than the reference transverse area F1. As a preferable example of a mesh shape in which a plurality of mountain-shaped portions and valley-shaped portions are continuously formed in a predetermined direction and a direction orthogonal thereto, a quadrangular pyramid shape (pyramid) as viewed from the upstream side of the molding material flow path 40 is used. Shape) in which the convex portions and the concave portions are alternately arranged vertically and horizontally while sharing one side of the bottom. The angle formed between each side surface of the quadrangular pyramid and the direction in which the molding material flow path 40 extends is preferably in the range of approximately 30 to 60 degrees (for example, approximately 45 degrees).
Similarly to the first portion 3a, the substantial filtration area F2 of the second portion 3b is also enlarged in the second portion 3b as compared to the reference cross-sectional area S2 of the molding material flow path 40 corresponding to the second portion 3b. You may use the filter medium 3 of the structure. Such a configuration can be realized, for example, by making the outer shape of the mesh constituting the second portion 3b the same concavo-convex shape as any of the first portions 3a described above.
Further, the top surface of the mountain-shaped portion and the bottom portion of the valley-shaped portion are continuous concave and convex surfaces (typically, the cross section of each of the top portion of the mountain-shaped portion and the bottom portion of the valley-shaped portion is substantially V-shaped). It is preferable to form as follows.

  In the above-described example, the sheet-like filter medium 3 is disposed in a posture orthogonal to the extending direction of the molding material flow path 40 as a whole (see FIG. 2), but as a modification, the sheet-like filter medium 3 is entirely disposed. Alternatively, it may be disposed in a posture that is inclined at an angle exceeding 0 degree and less than a right angle with respect to the extending direction of the molding material flow path 40. For example, in the filter medium in which the shape of the first portion 3a is a corrugated shape in which the first slopes 63 and the second slopes 64 are arranged alternately in the width direction, the first slope 63 as shown in FIGS. The first portion 3a having a shape in which the width of the second inclined surface 64 is wider than the width of the first inclined surface 63 is used instead of the shape in which the width of the second inclined surface 64 and the width of the second inclined surface 64 are substantially the same. The inclination angle of the slope 63 and the inclination angle of the second slope 64 are about 45 degrees in the opposite direction to the extending direction of the molding material flow path 40, respectively, and the entire inclination with respect to the extending direction of the molding material flow path 40 (preferably The filter medium 3 can be arranged in an attitude of about 30 to 60 degrees, for example, about 45 degrees.

  In the above-described example, the molding material passage hole 82 of the rectifier 80 is formed in parallel with the direction in which the molding material flow path 40 extends (see FIG. 6). For example, as schematically shown in FIG. The molding material passage hole 82 may be formed so as to be inclined and extend in a direction opposite to the swirl flow direction of the supplied polymer material 92. According to the rectifier 80 having such a molding material passage hole 82, the swirl flow is effectively eliminated by temporarily swirling the polymer material 92 in the reverse swirl direction opposite to the swirl flow direction. The linear flow can be realized (the polymer material 92 flowing linearly is sent to the rectifier 80). Thus, the first filtration polymer material 92a (that is, the first filtration polymer material component 90a made of the material 92a) can be appropriately disposed at a desired position of the long material 90. The angle θ formed by the direction in which the molding material flow path 40 extends and the direction in which the molding material passage hole 82 extends can be appropriately set so that the linear flow is realized by passing through the molding material passage hole 82. . The angle θ is upstream of the molding material flow path 40 so that the swirling flow can be appropriately eliminated according to the speed (strength) of the swirling flow between the central portion and the outer peripheral portion of the molding material flow path 40. From the viewpoint of the molding material passage hole 82 provided in the outer peripheral portion of the rectifier 80, the angle θ is greater than the molding material passage hole 82 provided in the central portion (the angle θ may be substantially 0 degree). Can be set to be large. Such a configuration having the molding material passage hole 82 inclined in the reverse swivel direction can be particularly preferably employed when the thickness of the rectifier 80 is relatively thin (therefore, the length of the molding material passage hole 82 is short).

  As in the present embodiment, the molding material flow path 40 includes the filtering material 3 in which a part obtained by dividing the cross section of the molding material flow path 40 in the circumferential direction is a first portion 3a that performs finer filtration than the other part. The extrusion molding apparatus 1 having a configuration provided in the inside (preferably in the first flow path 41 formed in the adapter 22) is not limited to the long material 90 having the shape shown in FIG. 9, but from the second filtered polymer material 92b. Part of the outer surface of the second filtration polymer material component 90b (preferably, at least the surface portion visually observed during use) is composed of the first filtration polymer material 92a (thus, the appearance of foreign matter is highly prevented. ) It can be applied to the production of various types of long material 90 continuously covered along the longitudinal direction by the first filtration polymer material constituting portion 90a. The area of the first portion 3a (for example, the central angle when dividing in the circumferential direction), the arrangement of the first portion 3a (position in the circumferential direction), the shape of the second flow path 42 (particularly the change flow path portion 32), etc. It can change suitably so that the elongate material 90 of a desired form (cross-sectional shape, arrangement | positioning of the 1st filtration polymer material structure part 90a etc.) may be obtained.

<Second embodiment>
In this embodiment, for example, as shown in FIG. 13, the entire outer surface of the molded part (second filtered polymer material constituting part 90b) made of the second filtered polymer material 92b is formed of the first filtered polymer material 92a. The present invention relates to a long material 190 in a form covered with one filtration polymer material constituting portion 90a), a method for manufacturing the long material 190, and a manufacturing apparatus. The long material 190 in this form is different from the extrusion device 1 (see FIGS. 1 and 2) used in the first embodiment in the shapes of the filtration device 2 and the second flow path 42, and the other parts are the same. It can be suitably manufactured by using an extrusion molding apparatus configured substantially in the same manner as in the first embodiment.

  In this embodiment, as shown in FIG. 14, the portion located on the outer peripheral side of the molding material flow path 40 in the filtering part 61 through which the polymer material 92 (see FIG. 2) extruded from the cylinder 12 passes is annularly formed. A filter medium 103 having a configuration in which the first portion 103a is formed and the inner peripheral side of the first portion 103a is the second portion 103b is used. The first part 103a of the filter medium 103 is a part that collects solids of a predetermined size or larger that can be contained in the polymer material 92 and prevents the passage of solids while allowing the solids of less than the predetermined size to pass. As shown in FIGS. 14 and 15, a plurality of meshes 160a, 160b, 160c having substantially the same outer shape, that is, a disk-like (doughnut-like) outer shape having a circular opening at the center. It is comprised as a lamination | stacking mesh part which laminated | stacked. A second portion 103b, which is a portion where the polymer material 92 is not substantially filtered, is configured by the opening provided in the central portion of these meshes. The plurality of meshes constituting the laminated mesh portion may be the same mesh or different meshes as in the filter medium 3 according to the first embodiment. In the latter case, it is preferable that the meshes having different meshes are laminated in the order in which the meshes on the upstream side of the molding material flow path 40 are coarser and the meshes on the downstream side are finer, More preferably, a mesh having a coarser mesh than the finest mesh is laminated further downstream of the finest mesh (and therefore the most downstream laminated mesh) among the meshes laminated in order.

  An annular guide ring 150 is disposed on the upstream side of the filter medium 103 in contact with the holding portion 62 provided on the further outer peripheral side of the first portion 103 a in the upstream end face of the filter medium 103. The downstream end surface of the guide ring 150 is formed in a shape (here, planar) that matches the upstream end surface of the filter medium 103 (that is, the holding portion 62) facing the downstream end surface. The polymer material 92 pushed out from the cylinder 12 is supplied to the filter part 61 of the filter medium 103 through the punched hole 151 formed on the inner peripheral side of the guide ring 150. Further, on the downstream side of the filter material 103, the filter material 103 is in contact with the downstream end surface of the filter material 103 so as to block the entire cross section of the molding material flow channel 40, and substantially in the same direction as the direction in which the molding material flow channel 40 extends. A rectifier 80 (see FIG. 2) having a plurality of molding material passage holes 82 extending is arranged. The upstream end face of the rectifier 80 according to the present embodiment is planar.

  The first filtering polymer material 92a that has passed through the first portion 103a of the filtering material 103 and the second filtering polymer material 92b that has passed through the second portion 103b are formed material passage holes that open at positions facing the respective portions 103a and 103b, respectively. 82 is sent to the downstream side of the rectifier 80. Therefore, on the downstream side of the rectifier 80, the first filtered polymer material 92a flows through the annular portion on the outer peripheral side in the cross section of the molding material flow path 40, and the central portion (inner peripheral portion) surrounded by the annular portion is the first. 2 The filtration polymer material 92b will flow. Thus, while maintaining the state in which the first filtration polymer material 92a and the second filtration polymer material 92b are distinguished from each other in the radial direction (that is, the state in which the materials 92a and 92b are not substantially mixed), both the materials 92a , 92b are introduced from the first flow path 41 to the second flow path 42, and are each formed into a predetermined cross-sectional shape while passing through the change flow path portion 32 of the second flow path 42. Then, both materials 92a, 92b are laminated and integrated so that the first filtration polymer material 92a continuously covers the entire outer surface of the second filtration polymer material 92b along the longitudinal direction. 92b is continuously extruded from the extrusion mold outlet 42b. Then, the long material 190 having the shape shown in FIG. 13 can be obtained by performing predetermined post-processing and cutting processing.

  The first filtered polymer material constituting portion 90a covering the entire outer surface of the obtained long material 190 passes through the first filtered polymer material 92a that has passed through the first portion 103a having a higher degree of filtration than the second portion 103b. Therefore, the appearance of solid matter (foreign matter) is highly suppressed. Therefore, the long material 190 is excellent in the appearance quality and smoothness of the outer surface (which may affect the attachment property, adhesion, etc. of the long material 190). In this way, the polymer material (first filtered polymer material 92a) constituting the desired predetermined range of surface (here, the entire circumference of the outer surface) is filtered by the first portion 103a having a high degree of filtration, and the appearance quality is not affected. The polymer material constituting the portion (second filtered polymer material 92b) is substantially not filtered, thereby reducing the amount of solid matter to be captured by the filter medium 103 and prolonging the time until the mesh is clogged. can do.

<Third embodiment>
In the present embodiment, for example, as shown in FIG. 16, a structure (typically a pipe shape) having an outer surface and an inner surface, and the entire inner surface is formed of a first filtration polymer material 92a (first portion). The present invention relates to a long material 290 in a form formed by a filtered polymer material component 90a), a method for manufacturing the long material 290, and a manufacturing apparatus. The long material 290 in this form is different from the extrusion apparatus 1 (see FIGS. 1 and 2) used in the first embodiment, for example, in the shape of the filtration device 2 and the second flow path 42. It can be suitably manufactured by using an extrusion molding apparatus configured substantially in the same manner as in the first embodiment.

  In this embodiment, as shown in FIGS. 17 and 18, a portion of the filtering part 61 through which the polymer material 92 (see FIG. 2) extruded from the cylinder 12 passes is arranged at the center of the molding material flow path 40. The first portion 203a has a circular shape (a portion that collects solids larger than a predetermined size that can be contained in the polymer material 92 and prevents the passage of solids that are less than the predetermined size while collecting the solids). The filter medium 203 having a configuration in which an annular portion surrounding the outer periphery of the first portion 203a is a second portion 203b (a portion that performs coarser filtration than the first portion 203a) is used. The filter medium 203 is formed by laminating meshes 260a and 260c on both sides (upstream side and downstream side) of the mesh 260b having the shape shown in FIG. 17 as shown in FIG. The outer shapes of the meshes 260a and 260c are circular flat plates having substantially the same outer peripheral diameter of the mesh 260b. The mesh 260b is formed on the inner peripheral side of the annular holding portion 62 sandwiched between the guide ring 50 that contacts the upstream side of the filter medium 203 and the rectifier 80 that contacts the downstream side (see FIG. 2). The disk-shaped small-diameter mesh 267 is arranged with an annular gap (portion constituting the second portion 203b) therebetween. The holding portion 62 and the small-diameter mesh 267 are connected by a plurality of (here, four) bridges 268 that cross the annular gap in the radial direction. The bridge 268 may be formed of a mesh, or may be formed of a material and a structure (for example, a metal plate) through which the polymer material 92 does not pass. In the filter medium 3 according to the present embodiment, the number of mesh stacks in the first portion 203a (mesh 260a, 260b, 260c) is larger than the number of mesh stacks in the second portion 203b (two meshes 260a and 260c in FIG. 18). Has been increased.

  The first filtration polymer material 92a that has passed through the first portion 203a of the filter medium 203 and the second filtration polymer material 92b that has passed through the second portion 203b have molding material passage holes that open at positions facing the portions 203a and 203b, respectively. 82 is sent to the downstream side of the rectifier 80. Therefore, on the downstream side of the rectifier 80, the second filtration polymer material 92b flows through the annular portion on the outer peripheral side in the cross section of the molding material flow path 40, and the central portion (inner peripheral portion) surrounded by the annular portion is the first. 1 filtration polymer material 92a will flow. Thus, while maintaining the state in which the first filtration polymer material 92a and the second filtration polymer material 92b are distinguished from each other in the radial direction (that is, the state in which the materials 92a and 92b are not substantially mixed), both the materials 92a , 92b are introduced from the first flow path 41 into the second flow path 42 and pass through the change flow path section 32 of the second flow path 42, respectively, each having a predetermined cross-sectional shape (typically a coaxial pipe). Shape). Then, both materials 92a, 92b are laminated and integrated so that the first filtered polymer material 92a is surrounded by the second filtered polymer material 92b and continuously embedded in the longitudinal direction. Is continuously extruded from the extrusion mold outlet 42b. Thereafter, a long material 290 having the shape shown in FIG. 16 can be obtained by performing predetermined post-processing and cutting processing.

  Of the obtained long material 290, the first filtered polymer material constituting portion 90b constituting the entire inner surface passes through the first filtered polymer material 92a that has passed through the first portion 203a having a higher degree of filtration than the second portion 203b. Therefore, the appearance of solid matter (foreign matter) is highly suppressed. Therefore, the long material 290 is excellent in the smoothness of the inner surface. In this way, the polymer material (the first filtration polymer material 92a) constituting the surface of the desired predetermined range (here, the entire inner surface) is filtered by the first portion 203a having a high degree of filtration, and a portion that does not affect the appearance quality is removed. The constituent polymer material (second filter polymer material 92b) is substantially not filtered, thereby reducing the amount of solid matter to be captured by the filter medium 203 and prolonging the time until the mesh is clogged. Can do.

The present invention has been described in detail on the basis of specific embodiments. However, the present invention is not limited to the specific embodiments described above, and various different embodiments and modifications within the scope of the present invention. It will be apparent to those skilled in the art that this is possible.
For example, in the above-described specific example, the filtration device 2 is disposed at the inlet (upstream end) of the first flow channel 41 formed in the adapter 22 in the molding material flow channel 40. For example, the central portion (middle flow portion) or the downstream end portion of the first flow path 41 may be used. Or you may arrange | position a filtration apparatus in the 2nd flow path 42 (typically the upstream edge part or middle flow part of the 2nd flow path 42) formed in the inside of the extrusion mold 30. FIG.
The mesh is not limited to the one in which a plurality of metal wires are knitted to form a through hole between the meshes, but a plurality of through holes are formed on a metal thin plate such as stainless steel by laser processing or processing using a press die. May be.

  Further, the extrusion molding apparatus used in the practice of the present invention includes a molding machine having a configuration in which the extrusion mold 30 is omitted from the molding machine 20 shown in FIG. 2 (that is, the intermediate long material 90 is extruded directly from the adapter 22. It may be an extrusion molding apparatus configured as described above. As shown in FIG. 13, the structure of the adapter 122 provided in the extrusion molding apparatus 100 having such a configuration is taken as an example in the case of producing a long material 190 having a cross-sectional shape obtained by dividing an oval into two along the major axis direction. 19 and 20 schematically show. In this extrusion molding apparatus 100, the molding material flow path 140 is composed of a first flow path formed in the adapter 122, and the adapter outlet 140 b, which is the downstream end thereof, serves as an extrusion port for the entire molding material flow path 140. . As shown in FIG. 20, the opening shape of the adapter outlet 140b is substantially the same as the cross-sectional shape of the intermediate long material 190 extruded from the outlet 140b. The molding material flow path (first flow path) 140 constitutes a land flow path portion 129 having a substantially the same cross-sectional shape as the intermediate long material 190 on the downstream side, and the upstream side faces the land flow path portion 129. Thus, the cross-sectional shape is a shape constituting the change flow path portion 128 that gradually changes from a circular shape to the cross-sectional shape of the intermediate long material 190. The polymer material 92 extruded from the cylinder 12 shown in FIG. 2 is supplied to the filter medium 103 configured in the same manner as in the second embodiment described above, and the first portion 103a and the second portion 103b (see FIG. 14 and 15) and sent to the molding material flow path 140 on the downstream side of the rectifier 80. While the first filtered polymer material 92a and the second filtered polymer material 92b are moved to the downstream side of the change flow path portion 128 while maintaining the state where the first filtered polymer material 92b is distinguished from each other in the radial direction, the two materials 92a and 92b are respectively determined in advance. The two materials 92a and 92b are laminated and integrated so that the first filtration polymer material 92a continuously covers the entire circumference of the outer surface of the second filtration polymer material 92b along the longitudinal direction. Then, both materials 92a and 92b are continuously extruded from the adapter outlet 140b. Then, the long material 190 having the shape shown in FIG. 13 can be obtained by performing predetermined post-processing and cutting processing. The extrusion molding apparatus having such a configuration can be preferably employed when producing a long material having a relatively simple cross-sectional shape.

  In the example shown in FIG. 2, the tip (downstream end) of the partition 83 that physically separates the first filtration polymer material 92a and the second filtration polymer material 92b is set upstream from the adapter outlet 41b, and on the downstream side of the tip. The two materials 92a and 92b are joined together, but the joining position of both materials 92a and 92b may be further downstream. For example, a configuration in which both materials 92a and 92b are merged in the vicinity of the adapter outlet 41b (the outlet of the first flow path 41) (may be in the vicinity of the upstream side or the vicinity of the downstream side), the second flow For example, a configuration of joining at the midstream portion of the path 42, a configuration of joining in the vicinity of the upstream side of the extrusion mold outlet 42b (the outlet of the entire molding material flow path 40, that is, the extrusion port), and the like can be employed. Alternatively, both materials 92a and 92b are divided and flowed in the molding material flow path 40 until reaching the extrusion mold outlet 42b, and a molded body made of the respective filtered polymer materials 92a and 92b is extruded from the extrusion mold outlet 42b. The molded body may be joined downstream of the extrusion mold outlet 42b. Since the first filtration polymer material 92a and the second filtration polymer material 92b have substantially the same composition except for the filtration degree (the content of solids of a predetermined size or more), the inside of the molding material flow path 40 or the extrusion Both materials 92a and 92b can be easily integrated downstream of the mold outlet 42b.

Alternatively, the extrusion molding apparatus used for carrying out the present invention may be an extrusion production line (extrusion molding apparatus 200) having a cylinder head (extrusion head) 213 as shown in FIG. FIG. 21 is a cross-sectional view showing a main part of the extrusion molding apparatus 200 according to the present embodiment.
In the extrusion molding apparatus 200 according to the present embodiment, the diameter of the adapter inlet 241a of the adapter 22 connected to the tip of the cylinder 12 via the cylinder head 213 (that is, the diameter D2 of the region through which the polymer material can pass) is 12 and the effective outer diameter (D2) of the filter medium 2003 (the first portion 2003a and the second portion 2003b) is also increased as the inlet 241a expands. It is characterized by being formed larger than the inner diameter (D1) of the tip. About others, it is comprised substantially the same as the extrusion molding apparatus 1 shown in FIG. Hereinafter, the characteristic part which concerns on this embodiment is demonstrated in detail.
The position where the cylinder head 213 is provided is the upstream end of the molding portion 20 (that is, the adapter inlet 241a of the first flow path 241 formed in the adapter 22) as in the extrusion molding apparatus 1 shown in FIG. And the downstream end of the cylinder 12 in which the screw 14 is accommodated. The adapter 22 is fixed to the cylinder head 213 using an adapter ring 23 and a fastening bolt 24.

A flow path 218 through which the polymer material 92 passes is formed inside the cylinder head 213 according to the present embodiment. The polymer material 92 pushed out by the screw 14 accommodated in the cylinder 12 is fed from the cylinder flow path 217 to the cylinder head flow path 218 to the adapter inlet 241 a of the first flow path 241 formed in the adapter 22. Carried. Then, the polymer material 92 passes through the adapter inlet 241a and forms the first portion 2003a and the second portion 2003b of the filter medium 2003 configured by a mesh. The filter portion 261 (the hole 251 of the guide ring 250 in the filter medium 2003). The polymer material 92 passes through the portion 252) and is supplied to the molding material flow path 240.
The flow path 218 inside the cylinder head 213 according to the present embodiment is formed in a substantially conical shape that extends so as to gradually expand toward the downstream side and that has its tip cut off. That is, the cylinder head flow path 218 has a shape in which the flow path inner diameter of the portion in contact with the cylinder 12 at the upstream end of the cylinder head 213 (that is, the inner diameter D1 at the tip of the cylinder 12) is the smallest. The inner diameter of the flow passage gradually expands in the downstream direction, and the inner diameter of the flow passage at the downstream end of the cylinder head 213 abuts against the adapter inlet 241a (that is, the effective outer diameter of the filter medium 2003 through which the polymer material 92 can pass). D2) is the largest formed. Therefore, a relationship (D1 <D2) is established where the effective outer diameter D2 of the filter medium 2003 is larger than the inner diameter D1 of the tip of the cylinder 12. According to the extrusion molding apparatus 200 including the cylinder head 213 according to the present embodiment, the polymer material 92 passes through the flow path 218 of the cylinder head 213 while maintaining the relationship of D1 <D2 as described above, and the filtration area (the above-described abbreviation Since the portion corresponding to the conical bottom surface) is supplied to the enlarged filtration unit 261, the amount of the polymer material 92 that passes through the filtration unit 261 per unit time is reduced. As a result, it is possible to lengthen the time until the filter medium 2003 made of mesh is clogged.

  The technology disclosed in the present specification includes a trim member (for example, a decorative trim member that requires a high appearance quality on an outer surface (design surface)), a weather strip, a molding member (for example, a roof) that is attached to a vehicle such as an automobile. Mall, pillar mall) and the like. Moreover, it can apply preferably to manufacture of the molded product which requires the smoothness of an inner surface like the pipe etc. which flow a fluid.

It is a schematic explanatory drawing which shows an example of the extrusion molding apparatus (line) for enforcing the manufacturing method which concerns on this invention. It is sectional drawing which follows the II-II line | wire of FIG. 1, Comprising: It is sectional drawing which shows the principal part of the extrusion molding apparatus which concerns on 1st Example. It is explanatory drawing which shows typically the shape which looked at the guide ring of the extrusion molding apparatus which concerns on 1st Example from the upstream of the molding material flow path. It is a III direction arrow line view of FIG. 3A. It is sectional drawing which follows the IV-IV line of FIG. 3B. It is explanatory drawing which shows typically the shape which looked at the rectifier of the extrusion molding apparatus which concerns on 1st Example from upper direction. It is sectional drawing which follows the VI-VI line of FIG. It is a VII direction arrow line view of FIG. It is explanatory drawing which shows typically the structure and effect | action of a rectifier which concern on the modification of 1st Example. It is a perspective view which shows typically the elongate material manufactured using the extrusion molding apparatus which concerns on 1st Example. It is explanatory drawing which shows typically the shape which looked at the filter material of the extrusion molding apparatus which concerns on 1st Example from the upstream of the molding material flow path. It is explanatory drawing which shows typically the shape which looked at the mesh which comprises the filter medium shown in FIG. 10 from the upstream of the molding material flow path. It is explanatory drawing which shows typically the shape which looked at the mesh which comprises the filter material which concerns on the modification of 1st Example from the upstream of the molding material flow path. It is a schematic diagram explaining the effect of the filter apparatus which concerns on 1st Example. It is sectional drawing which follows the XII-XII line | wire of FIG. It is a perspective view which shows typically the elongate material manufactured using the extrusion molding apparatus which concerns on 2nd Example. It is explanatory drawing which shows typically the shape which looked at the filter material of the extrusion molding apparatus which concerns on 2nd Example from the upstream of the molding material flow path. It is sectional drawing which follows the XV-XV line | wire of FIG. It is a perspective view which shows typically the elongate material manufactured using the extrusion molding apparatus which concerns on 3rd Example. It is explanatory drawing which shows typically the shape which looked at the mesh which comprises the filter material of the extrusion molding apparatus which concerns on 3rd Example from the upstream of the molding material flow path. It is sectional drawing equivalent to the position which follows the XVIII-XVIII line of FIG. It is sectional drawing which shows typically the adapter of the extrusion molding apparatus which concerns on the modification of 2nd Example. It is a XX direction arrow line view of FIG. It is sectional drawing which shows the principal part of the extrusion molding apparatus provided with the extrusion head which concerns on other embodiment.

Explanation of symbols

1,100,200 Extrusion molding equipment (long material manufacturing equipment)
2,202 Filtration device 3,2003 Filter material (filtering means)
3a, 103a, 203a, 2003a 1st part 3b, 103b, 203b, 2003b 2nd part 10 Extruder (extrusion part)
12 Cylinder 13,213 Cylinder head (extrusion head)
14 Screw 19 Treatment tank 20 Molding machine (Molding part)
22, 122 Adapter 30 Extrusion mold 32, 128 Change flow path section 34, 129 Land flow path section 40, 240 Molding material flow path 41, 241 First flow path 41a, 241a Adapter inlet (inlet)
41b, 241b Adapter outlet 42 Second flow path 42a Extrusion mold inlet 42b Extrusion mold outlet (extrusion port)
140 Molding material channel (first channel)
140a Adapter inlet (inlet)
140b Adapter outlet (extrusion port)
50, 150, 250 Guide ring (annular ring)
53 Partition (guide means, forced introduction means)
55 Mountain-shaped portion 56 Valley-shaped portion 58 Positioning pin (circumferential alignment means)
59, 69, 89 Positioning hole (circumferential alignment means)
60a, 60b, 60c, 160a, 160b, 160c, 260a, 260b, 260c Mesh 80 Rectifier (rectifying means)
82 Molding material passage hole 83 Partition (mixing prevention means)
90, 190, 290 Intermediate long material, long material 90a First filtration polymer material component 90b Second filtration polymer material component 92 Polymer material 92a First filtration polymer material 92b Second filtration polymer material 95 Head 95a Design surface 96 legs

Claims (38)

An extrusion section provided with an extrusion head at the tip of a cylinder having a screw driven to rotate therein, an inlet provided downstream of the extrusion head and compatible with the tip of the cylinder, or an inlet enlarged from the inner diameter of the tip and the inlet A polymer material mixed with and / or mixed with a powdery solid using an extrusion molding device including a molding material flow path that connects a molding material flow path connecting the extrusion port on the downstream side to the inside. A method of producing a long material by extruding and supplying from a cylinder and extruding it into a long shape having a predetermined cross-sectional shape from an extrusion port of the molding part,
In the molding material flow path, the swirl flow direction of the polymer material extruded and fed while being swirled from the cylinder toward the downstream side by the screw is changed to a non-swirling flow direction different from the direction to rectify. A rectifying means to be provided, and a filtering means disposed at the same position as the rectifying means or upstream of the rectifying means,
Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. A first portion that is filtered to permit passage of the second portion, and a second portion that is coarser or substantially not filtered than the first portion,
The polymer material that has passed through the filtering means is substantially mixed with the first filtering polymer material that has passed through the first part and the second filtering polymer material that has passed through the second part on the downstream side of the filtering means. Without distinguishing and maintaining the distinguished state, the inside of the molding material flow path is allowed to flow downstream,
The first filtration polymer material and the second filtration polymer material are each molded into a predetermined cross-sectional shape in the molding material flow path, and the two materials are continuously laminated and integrated at or near the extrusion port. To form an intermediate long material,
Then, the process which hardens or solidifies the said polymer material which comprises the said intermediate long material is performed, The long material manufacturing method characterized by the above-mentioned. The molding part includes an adapter attached to the extrusion head,
The adapter has an adapter inlet that matches the tip of the cylinder in the molding material channel or an adapter inlet that is larger than the inner diameter of the tip and a first channel that connects an adapter outlet downstream of the inlet. Prepared,
The long material manufacturing method according to claim 1, wherein both the rectifying means and the filtering means are provided in the first flow path. The molding material flow path downstream from the position where at least the rectifying means and the filtering means are provided is formed in a linear shape or a continuous curved shape,
The linear or continuous curve while maintaining a state in which the first filtered polymer material and the second filtered polymer material that have passed through the rectifying unit and the filtering unit are distinguished from each other without substantially mixing up to the extrusion port. The long material manufacturing method according to claim 1, wherein the molding material flow path formed in a shape is caused to flow.   The rectifying means diverts the polymer material extruded and supplied while swirling from the cylinder toward the downstream side by the screw, and divides the polymer material divided in the diverted portion into the rectifying portion. The flow rate of the polymer material is changed and rectified so as to flow in a non-swirl flow direction different from the swirl flow direction on the downstream side of the means. The long material manufacturing method as described.   The rectifying means has a reverse swirl direction that is opposite to the swirl direction so as to eliminate the swirl flow and newly realize a linear flow for each of the polymer materials divided into a plurality of parts. The long material manufacturing method of Claim 4 comprised so that the said polymer material might be swirled temporarily.   By expanding the filtration area of the first portion of the filtration means to be larger than the reference cross-sectional area of the molding material flow path corresponding to the first portion, the unit area / unit in the enlarged first portion The amount of passage of the polymer material per time is moved downstream while filtering while keeping the amount of passage of the polymer material per unit area / unit time in the reference cross section of the molding material flow path to be smaller. The long material manufacturing method in any one of 1-5. As the filtering means, using a filtering material constituted by a mesh that forms a mesh of a predetermined roughness,
The first part of the filter medium is formed by a finer mesh than the second part, or is formed by increasing the number of layers of meshes than the second part. The long material manufacturing method in any one of 6. As the filter medium, a filter medium having a configuration in which a part of the transverse cross section of the molding material flow path corresponds to the first part is used,
The first filtered polymer material that has passed through the first portion extrudes both polymer materials from the extrusion port so as to continuously cover a part of the outer surface of the second filtered polymer material along the longitudinal direction. Item 8. The method for producing a long material according to Item 7. As the filter medium, a filter medium having a configuration in which the outer peripheral side of the molding material flow path is annularly formed as the first part,
The first filtered polymer material that has passed through the first portion extrudes both polymer materials from the extrusion port so that the entire circumference of the outer surface of the second filtered polymer material is continuously covered along the longitudinal direction. Item 8. The method for producing a long material according to Item 7. As the filter medium, using a filter medium having a configuration in which the center side of the molding material flow path is the first portion,
The first filtered polymer material that has passed through the first portion is surrounded by the second filtered polymer material and is continuously embedded along the longitudinal direction so that both polymer materials are extruded from the extrusion port. The long material manufacturing method according to 7. In the filter medium, the ratio of the area of the part constituting the first part and the area of the part constituting the second part is the area of the first filtration polymer material constituting part in the cross section of the molded long material. And the ratio of the area of the part constituting the first part is larger than the ratio of the area of the second filtration polymer material constituting part,
The flow rate of the second filtration polymer material is increased in an inversely proportional manner while the flow rate per unit time of the first filtration polymer material that has passed through the filtration material is decreased with time. The long material manufacturing method in any one.   The first filtration polymer material and the second filtration polymer material are divided and flowed in the molding material flow path until they are merged in the vicinity of the extrusion port or in the upstream side thereof. The long material manufacturing method as described.   The first filtration polymer material and the second filtration polymer material are divided and flowed in the molding material flow path to the extrusion port, and molded bodies made of the respective polymer materials are joined downstream of the extrusion port. The long material manufacturing method according to any one of claims 1 to 12.   A physical partition is provided along the flow direction between the first filtered polymer material and the second filtered polymer material that has passed through the filtering means, and the respective polymer materials are prevented from being mixed with each other. The long material manufacturing method according to claim 12, wherein the material is caused to flow downstream of the molding material flow path.   The guide means for diverting the polymer material extruded and supplied from the cylinder in the direction toward the first portion and the direction toward the second portion of the filtration means is provided upstream of the filtration means. The long material manufacturing method of crab.   The polymer material is made of a thermoplastic polymer material, and the thermoplastic polymer material is heated, extruded in a molten state, and solidified by cooling the intermediate long material composed of the extruded thermoplastic polymer material. The long material manufacturing method in any one of Claims 1-15 which performs.   The long material manufacturing method according to claim 16, wherein a thermoplastic elastomer containing a rubber component is used as the thermoplastic polymer material.   The long material manufacturing method according to claim 17, wherein the thermoplastic elastomer is an olefin-based thermoplastic elastomer (TPO) containing a rubber component.   The polymer material is composed of a vulcanizable unvulcanized rubber material, the unvulcanized rubber material is extruded in an unvulcanized state, and the intermediate long material composed of the extruded unvulcanized rubber material is heated. And the elongate material manufacturing method in any one of Claims 1-15 which performs the said hardening process by vulcanizing.   The long material manufacturing method according to claim 19, wherein an unvulcanized rubber material formed by kneading a powder filler mainly containing EPDM is used as the polymer material. The inlet of the molding material channel is an inlet that is larger than the inner diameter of the tip of the cylinder;
The long material manufacturing method according to claim 1, wherein the filtering means is configured to have an effective outer diameter larger than an inner diameter of a tip of the cylinder.   The said long material is a long material manufacturing method in any one of Claims 1-21 which is the weather strip for vehicles by which the cross-sectional shape was shape | molded unusually. An extrusion section provided with an extrusion head at the tip of a cylinder having a screw driven to rotate therein, an inlet provided downstream of the extrusion head and compatible with the tip of the cylinder, or an inlet enlarged from the inner diameter of the tip and the inlet And a molding part having a molding material flow path connecting the extrusion port on the downstream side with respect to the inside, and a polymer material in which powdered solids are blended and / or mixed is extruded from the cylinder. A long material manufacturing apparatus for manufacturing a long material by extruding into a long shape having a predetermined cross-sectional shape from an extrusion port of the molding part,
In the molding material flow path, the swirl flow direction of the polymer material extruded and fed while being swirled from the cylinder toward the downstream side by the screw is changed to a non-swirling flow direction different from the direction to rectify. Rectifying means for
A filtering means is provided at the same position as the rectifying means or upstream of the rectifying means,
Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. A first portion where filtration is allowed to pass through and a second portion where filtration is coarser than or substantially unfiltered than the first portion,
The polymer material that has passed through the filtering means is substantially mixed with the first filtering polymer material that has passed through the first part and the second filtering polymer material that has passed through the second part on the downstream side of the filtering means. It is configured to flow in the downstream of the molding material flow path while maintaining the distinguished state without distinction, and
The first filtration polymer material and the second filtration polymer material are each molded into a predetermined cross-sectional shape in the molding material flow path, and the two materials are continuously laminated and integrated at or near the extrusion port. The apparatus for producing a long material is characterized in that it is extruded to form an intermediate long material, and thereafter the polymer material constituting the intermediate long material is cured or solidified. The molding part includes an adapter attached to the extrusion head,
The adapter has an adapter inlet that matches the tip of the cylinder in the molding material channel or an adapter inlet that is larger than the inner diameter of the tip and a first channel that connects an adapter outlet downstream of the inlet. Prepared,
The long material manufacturing apparatus according to claim 23, wherein both the rectifying means and the filtering means are provided in the first flow path.   The elongate material manufacturing apparatus according to claim 23 or 24, further comprising a mixing preventing unit for preventing the first filtering polymer material and the second filtering polymer material from mixing on the downstream side of the rectifying unit.   26. The guide means according to any one of claims 23 to 25, further comprising guide means for diverting the polymer material extruded and supplied from the cylinder in the direction toward the first part and the direction toward the second part on the upstream side of the filtration means. The long material manufacturing apparatus of crab.   The filtering means is configured by a mesh that forms eyes having a predetermined roughness, and the first portion is formed by a finer mesh than the second portion, or the first portion is formed by the second portion. 27. The long material manufacturing apparatus according to any one of claims 23 to 26, which is a filter medium formed by increasing the number of mesh layers.   The long material manufacturing apparatus according to claim 27, wherein the first portion of the filtering material is formed in a partial shape obtained by dividing a transverse section of the molding material flow path in the circumferential direction.   The long material manufacturing apparatus according to claim 27, wherein the first portion of the filter medium is formed in an annular shape on an outer peripheral side of the molding material flow path.   The long material manufacturing apparatus according to claim 27, wherein the first portion of the filter medium is formed in a circular shape on a center side of the molding material flow path.   The long material manufacturing apparatus according to any one of claims 27 to 30, wherein at least the first portion of the filtering material is configured by a laminated mesh portion formed by laminating a plurality of meshes.   The laminated mesh portion is configured by laminating a plurality of meshes having different openings so that the upstream side of the molding material flow path is coarser and the downstream side is finer. Item 32. The long material manufacturing apparatus according to Item 31.   The long material manufacturing apparatus according to claim 32, wherein at least one mesh coarser than a mesh arranged on the most downstream side of the laminated mesh portions is arranged on the downstream side of the laminated mesh portions. The inlet of the molding material channel is an inlet that is larger than the inner diameter of the tip of the cylinder;
The long material manufacturing apparatus according to any one of claims 23 to 33, wherein the filtering means is configured to have an effective outer diameter larger than an inner diameter of a tip of the cylinder. A long material formed into a predetermined cross-sectional shape by extruding a polymer material in which powdered solids are blended and / or mixed, and the following production method:
An extrusion section provided with an extrusion head at the tip of a cylinder having a screw driven to rotate therein, an inlet provided downstream of the extrusion head and compatible with the tip of the cylinder, or an inlet enlarged from the inner diameter of the tip and the inlet Using an extrusion molding apparatus provided with a molding material flow path that connects a molding material flow path connecting the extrusion port on the downstream side, and feeding the polymer material from the cylinder,
In the molding material flow path, the swirl flow direction of the polymer material extruded and fed while being swirled from the cylinder toward the downstream side by the screw is changed to a non-swirling flow direction different from the direction to rectify. Rectifying means to be provided, and filtering means disposed at the same position as the rectifying means or upstream of the rectifying means,
Here, the filtering means collects solids of a predetermined size or more in a part of the filtering means on a surface intersecting the flow direction of the polymer material after the rectification and prevents passage of the solids, while the solids of less than the predetermined size. A first portion that is filtered to permit passage of the second portion, and a second portion that is coarser or substantially not filtered than the first portion,
The polymer material that has passed through the filtering means is substantially mixed with the first filtering polymer material that has passed through the first part and the second filtering polymer material that has passed through the second part on the downstream side of the filtering means. Without distinguishing and maintaining the distinguished state, the inside of the molding material flow path is allowed to flow downstream,
The first filtration polymer material and the second filtration polymer material are each molded into a predetermined cross-sectional shape in the molding material flow path, and the two materials are continuously laminated and integrated at or near the extrusion port. To form an intermediate long material,
Thereafter, a process for curing or solidifying the polymer material constituting the intermediate long material;
Manufactured by
A long material comprising a molded part made of the first filtered polymer material and a molded part made of the second filtered polymer material.   36. The long material according to claim 35, wherein a surface portion visually observed at the time of use is formed by a molding portion made of the first filtration polymer material.   36. The elongate material according to claim 35, wherein an entire outer surface is formed by a molded part made of the first filtration polymer material.   36. The long material according to claim 35, wherein the long material is formed in a structure having an outer surface and an inner surface, and the entire inner surface is formed by a molding portion made of the first filtration polymer material.

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