JP6263062B2 - Resin panel circuit and manufacturing method thereof - Google Patents

Description

  The present invention relates to a resin panel circuit and a method for manufacturing the same, and more specifically, a resin panel circuit capable of proper and smooth extracorporeal treatment of body fluids by preventing problems associated with the extracorporeal liquid circulation channel. Further, the present invention relates to a method for manufacturing a resin panel circuit that can reliably prevent leakage of fluid in the extracorporeal liquid circulation flow path and can be efficiently molded while preventing obstruction of the extracorporeal liquid circulation flow path.

Conventionally, in the medical field, a resin panel circuit has been employed when purifying blood outside the body.
Such a blood purification method is performed by a blood purification system having a blood purification device and a blood purification flow channel, and the blood purification flow channel includes a blood collection internal flow channel for sending blood collected from a patient to the blood purification device. In addition to a blood circulation circuit consisting of a blood return internal flow path that returns blood from the blood purifier to the patient, it is dialyzed into a drain internal flow path that drains the blood purifier according to other uses, and a blood purifier A dialysate internal flow path for supplying a liquid, a replacement fluid internal flow path for supplying a replacement fluid to a blood collection internal flow path or a blood return internal flow path, and the like are provided.

It is necessary to adjust the temperature of the dialysate, the replacement fluid, and the like passing through the dialysate internal flow path or the replacement fluid internal flow path to a desired temperature in order to maintain a temperature balance with the body fluid during treatment.
For this reason, by forming a part of the blood purification flow path in a panel-like circuit, liquids such as dialysate and replacement fluid are concentrated on the panel and the temperature is adjusted, so that the temperature can be efficiently reduced while achieving compactness. Adjustment can be made efficiently.
Alternatively, in such a panel-like circuit, a liquid such as dialysate or replacement fluid may be measured, or a storage unit may be provided to store the liquid and appropriately supplied and supplied to the body fluid.
In this regard, as disclosed in Patent Document 1, such a panel circuit is made of resin from the viewpoint of biocompatibility and biological safety, and is usually manufactured by a molding method and transmitted while achieving compactness. From the viewpoint of securing a thermal area, a zigzag meandering internal flow path through which a liquid such as dialysate or replacement fluid flows is provided.

More specifically, as disclosed in Patent Document 2, the resin panel circuit has a flat plate shape, and is used to treat body fluid taken out of the body outside the body and return it to the body. A part of the path is formed to adjust the temperature of the body fluid in the extracorporeal liquid internal flow path by contacting the temperature adjustment plate, And a connecting conduit for connecting the end portion of the internal flow passage in the panel and the circular conduit of the extracorporeal liquid internal flow passage outside the panel.
Such a resin panel circuit is used, for example, in a treatment method in which a body fluid such as blood is taken out of the body, purified, and returned to the body. It is necessary to achieve an internal channel shape.

However, the conventional resin panel circuit and the manufacturing method thereof have the following technical problems.
First, due to the connection between the internal flow path and the external flow path via the connection pipe line, the regulation of the accurate inner diameter of the flow path is hindered. More specifically, as shown in FIG. 7 of Patent Document 2, the end of the internal flow path is provided with a tapered enlarged diameter part into which the connection pipe can be inserted, while the connection pipe is A through-flow path is provided in the interior, and the through-flow path is provided with a tapered portion that expands outwardly, and an external pipe line is fitted into the tapered portion. The inner diameter of the tapered enlarged portion at the end of the channel, the inner diameter of the through-flow channel, and the inner diameter of the tapered channel of the through-flow channel may be different. There is a concern about the generation of precipitates.

Secondly, with respect to the method for manufacturing a resin panel circuit, efficient molding is difficult due to the connection between the internal flow path and the external flow path via the connection pipe line. More specifically, for example, when manufacturing such a resin panel circuit, first to form the internal flow path, the plastic sheets having a semicircular recess formed on one side are bonded together by high frequency welding, and then formed. The connecting pipe is inserted into the opening of the internal flow path, and is similarly bonded by high frequency welding or hot press.
As described above, since the plastic sheets are bonded to each other by high-frequency welding or hot press and bonded to the internal flow path of the connecting pipe line through separate processes, it is difficult to perform efficient production.
Further, the high-frequency welding or hot pressing method is a method in which the portions to be welded of the two resin sheets are welded by pressing in a state where the portions to be welded are heated, and the resin oozes out into the internal flow path. Therefore, a post-processing step is required for this purpose.
Adhesion methods that do not use high frequency, for example, adhesive methods that use adhesives, can ensure adhesion without relying on welding compared to high frequency welding methods, so it is possible to prevent unintentional withdrawal of connecting pipes. However, for this purpose, as in the high frequency welding method, a detailed process requiring time is required.

  Thirdly, with respect to the method for manufacturing a resin panel circuit, it is difficult to realize a thickness corresponding to the function required for the resin panel circuit. More specifically, as disclosed in Patent Document 2, when molding a resin panel circuit, from the viewpoint of ensuring heat transfer performance, one sheet is a thin flat plate, the blow ratio is small, and the other sheet Since the internal flow path is shaped, the blow ratio is inevitably higher than that of a thin flat plate. In this case, for example, if molding is performed using a molten cylindrical parison, one sheet and the other sheet having different blow ratios must be molded based on the same thickness of the molten parison. If the thickness of the melt parison is determined according to the sheet to be molded with a high blow ratio, the sheet to be molded with a low blow ratio will be excessively thick and wasteful. If the thickness of the melt parison is determined in accordance with a sheet having a low blow ratio, the sheet having a high blow ratio may be insufficient in thickness, resulting in a molding failure or inability to be molded.

In order to solve such first to third technical problems all at once, it is conceivable to use a resin insert as an alternative to the connection pipe line.
More specifically, as a resin-made insert, there is a through passage extending in the longitudinal direction from the opening of one end face toward the opening of the other end face, and the internal flow path and the external flow path through the through path. In order to communicate with each other, a resin insert is placed between two molten resin sheets, and the mold is clamped at the time of molding. By welding the molded resin sheet and the resin insert, and connecting the internal flow path and the external flow path through the through-hole of the resin insert, it is difficult to regulate the inner diameter of the flow path and the desired meat It seems that the thickness can be set.
However, the resin insert itself is a small article and has a through passage inside. Therefore, a material having higher rigidity than the resin sheet, for example, polypropylene as the resin sheet and polycarbonate as the resin insert should be adopted. Is assumed.
Furthermore, during molding, the resin insert is attached to the mold because of the need for continuous connectivity without steps between the resin insert through path and the internal flow path formed by molding the two resin sheets. For example, a positioning pin for fixing a resin insert is required for accurate positioning.

For this reason, simply providing a resin insert causes the following technical problems.
That is, it is difficult to secure the adhesiveness between the resin insert and the resin sheet, and the possibility of leakage of the internal solution due to molding is increased. More specifically, if a resin insert that is more rigid than a resin sheet is used, the resin sheet is likely to be deformed, so there is a possibility of leakage of the internal solution from the contact portion between the resin insert and the resin sheet. In particular, the adhesiveness at the time of molding tends to be insufficient as compared with the case of the same quality due to the fact that the resin sheet and the resin insert are not welded if they are different resins.
On the other hand, if the compression due to mold clamping is too strong in order to improve the adhesion from the viewpoint of ensuring adhesion, the possibility of blockage of the internal flow path arises.
More specifically, when the mold is clamped, the resin sheet is pressed against the outer surface of the resin insert. If the compression is too strong, excess resin escapes to the internal flow path, Occlusion of the flow path occurs.
On the other hand, if a resin sheet made of a material having a lower rigidity than that of the resin insert is used, the resin sheet particularly in the peripheral portion of the resin insert expands outward due to the internal pressure of the internal solution in the internal flow path. In particular, the possibility of leakage from between the end face of the resin insert and the resin sheet increases.
International Publication 2009-099890 JP 2009-233081 A

In view of the above technical problems, an object of the present invention is to provide a resin panel circuit capable of appropriate and smooth extracorporeal treatment of bodily fluids by preventing problems related to the extracorporeal liquid circulation channel. It is in.
In view of the above technical problems, the object of the present invention is to prevent the leakage of fluid in the extracorporeal liquid circulation flow path while preventing clogging of the extracorporeal liquid circulation flow path, and to perform efficient molding. It is providing the manufacturing method of the resin-made panel circuit which is.

In order to achieve the above object, the resin panel circuit of the present invention is
A resin panel circuit that forms part of an extracorporeal fluid circulation channel used to treat body fluids taken out of the body outside the body and return them to the inside of the body, provided at the edge and connected to the external channel In the resin panel circuit having an internal flow path of liquid extending from the inflow opening or the outflow / inflow opening to the outflow opening or the outflow / inflow opening provided at the edge and connected to the external flow path,
A concave long groove is provided on the inner surface of at least one of the two resin sheets, and has an internal flow path formed by surface bonding on each inner surface,
The inflow opening or the outflow opening or the outflow / inflow opening of the internal flow path is provided with a resin insert that connects the internal flow path and the external flow path so as to communicate with each other.
The resin-made insert has a through passage extending in a longitudinal direction from an opening on one end face toward an opening on the other end face, and communicates the internal flow path and the external flow path via the through path. Connect as possible
Of the two resin sheets, a position corresponding to the inflow opening or the outflow opening or the outflow inflow opening has a shape complementary to the outer shape of the resin insert, and is continuous with the concave long groove and close to the edge. A recess for the insert is provided,
A halved annular shoulder that is in close contact with the one end surface of the resin insert is provided at the tip of the insert recess, and the inner peripheral edge of the halved annular shoulder is the opening of the one end surface. Formed to match the diameter of
A resin sheet annular thick part is provided along the extending direction of the concave long groove from the half annular shoulder,
The resin sheet annular thick portion is configured such that the inner peripheral surface thereof forms a part of the concave long groove and has a thickness that does not deform due to the internal pressure of the fluid in the internal flow path.

According to the above resin panel circuit, the resin panel circuit forms a part of the extracorporeal liquid circulation flow path, so that the body fluid taken out from the body is resin from the external flow path at the inflow opening or the outflow opening. The body fluid flows inside the internal flow path through the penetration passage of the made insert and is treated outside the body, and the treated body fluid flows from the internal flow path to the external flow path through the penetration path of the resin insert at the outflow opening or the inflow / outflow opening It flows inside and is returned to the body.
In this case, in order to connect the internal channel and the external channel so as to communicate with each other using the resin insert, in the resin insert, the longitudinal direction from the opening of one end surface to the opening of the other end surface The resin insert is closely attached to the insert recess provided in the resin sheet, and the resin sheet has a boundary between the concave long groove continuous with the insert recess and the insert recess. Is provided with a half-shaped annular shoulder closely contacting one end surface of the resin insert, and the inner peripheral edge of the half-shaped annular shoulder portion is formed to match the diameter of the opening of one end surface, A resin sheet annular thick part is provided along the extending direction of the concave long groove from the half annular shoulder, and the inner peripheral surface of the resin sheet annular thick part constitutes a part of the concave long groove. Due to the internal pressure of the fluid in the internal flow path Since it has a thickness that does not deform, during use, the halved annular shoulder of the resin sheet around the resin insert is deformed by the internal pressure due to the fluid in the internal flow path, It is possible to reliably prevent fluid leakage from between one end surface of the resin insert and the half-shaped annular shoulder of the resin sheet, and to prevent problems with the extracorporeal liquid circulation channel. Thus, an appropriate and smooth extracorporeal treatment of body fluid is possible.

Moreover, the thickness of the resin sheet annular thick part is set according to the diameter of the internal flow path, and is preferably at least larger than the thickness of the resin sheet constituting the insert recess.
Further, the resin insert is provided with a projecting portion that projects from the peripheral side surface of the resin insert,
Each of the two resin sheets, or one of the inner surfaces, is provided with a recessed portion complementary to the protruding portion,
It is preferable that the resin insert is prevented from being pulled out by fitting the protruding portion into the recess.
Still further, the through passage has a reduced diameter portion provided on the inner flow path side and an enlarged diameter portion on the external flow path side, and a shoulder portion is provided between the reduced diameter portion and the enlarged diameter portion. The diameter of the reduced diameter portion is set to be the same as the diameter of the internal flow path, and the external flow path is fitted into the expanded diameter section until the opening end surface thereof abuts on the shoulder. The diameter of the enlarged diameter part is preferably set to be substantially the same as the outer diameter of the external channel.

In addition, a plurality of the internal flow paths are provided, and accordingly, the resin inserts having a plurality of cylindrical portions are arranged in alignment at the edges, and the cylindrical portions of the adjacent resin inserts are connected to each other. The overhang portion may be configured as described above.
Further, the resin insert is an integrally molded product, a portion corresponding to the enlarged diameter portion is formed in a columnar shape, and a portion corresponding to the reduced diameter portion is tapered toward the internal flow path. It is formed in a conical shape, and the cylindrical portion and the truncated conical portion are concentric, and the overhanging portion is orthogonal to the cylindrical portion and extends from the lower end to the upper end of the circular cross section of the cylindrical portion. A standing wall should be constructed.
Furthermore, it is preferable that the standing wall constitutes an inclined surface in which a front surface facing the edge portion is inclined downward toward a center line of the cylindrical portion.
In addition, two standing walls are provided at an interval in the longitudinal direction of the resin insert, and the front surface facing one of the edges is an inclined surface inclined downward toward the center line of the cylindrical portion. Preferably, the other front surface facing the internal flow path constitutes an inclined surface that is inclined downward toward the center line of the cylindrical portion.

Further, the resin panel circuit is formed in a flat plate shape, the internal flow path is formed in a meandering shape, and one of the thermoplastic resin sheets is formed in a flat plate shape, and its outer surface is transmitted. A hot surface may be formed.
Furthermore, the concave long groove, the concave portion and the concave portion for insert are preferably formed so as to protrude to the outer surface side of the corresponding thermoplastic resin sheet.
In addition, the internal flow path may be formed with a storage portion for storing a liquid that communicates with the internal flow path.

In order to achieve the above object, a method for producing a resin panel circuit of the present invention comprises:
A resin panel circuit that forms a part of an extracorporeal fluid circulation channel used to process bodily fluids taken out of the body and return them to the inside of the body, from one end face opening to the other end face opening A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening,
A pair of split molds that are movable relative to each other between a mold clamping position and an open position, and at least one of the mold surfaces has a concave long groove for an internal flow path that is complementary to the internal flow path, and the surface A pin positioned with respect to the surface so as to extend toward the pinch-off portion along the surface at a predetermined interval, and the surfaces of one and the other mold extend toward the pinch-off portion, Providing a pair of split molds provided with an insert and a first insert concave portion and a second insert concave portion;
Arranging a pair of thermoplastic resin sheets made of one and the other in a molten state at a distance from each other and between a pair of split molds in an open position;
By passing the pin through the through-hole so as to partially protrude from the opening of one end surface of the insert, the first recess for insert and the second insert for insert are projected inward from the pinch-off portion. Disposing the resin insert positioned at a position corresponding to each of the recesses between two thermoplastic resin sheets;
Forming a sealed space between one thermoplastic resin sheet and the corresponding mold of the pair of molds, and forming along the corresponding cavity by reducing the pressure of the air from the sealed space, A first recessed groove for insert projecting toward the cavity is formed, and a sealed space is formed between the other thermoplastic resin sheet and the corresponding molds of the pair of molds. Forming a second concave groove for insert projecting toward the cavity by shaping the corresponding cavity by depressurizing air; and
By moving the pair of split molds to the clamping position, one of the thermoplastic resin sheets on the outer peripheral edge of the concave long groove for the internal flow path on the surface facing the other sheet is heated. A plastic resin sheet is welded to close the concave long groove for the internal flow path to form an internal flow path, and at each of the inflow opening and the outflow opening or the outflow / inflow opening formed at the edge, The one and the other are formed while forming a pool portion of a molten thermoplastic resin sheet pressed against the outer surface of the resin insert around the pin protruding from the opening of the one end surface of the insert. The resin-made insert is formed on the inner surface of each of the first groove for insert and the second groove for insert formed in each of the thermoplastic resin sheets. And a step of wearing, has a configuration.

The method for producing a resin panel circuit according to the present invention uses a pin used for positioning a resin insert with respect to a mold at the time of molding, in particular, around the protruding portion of the pin from the tip of the insert. In addition to restricting the inner diameter of the passage and preventing the internal passage from being blocked during molding, fluid leakage from the internal passage during use is prevented.
More specifically, without using the high-frequency welding method in the conventional internal flow path forming process and the connection flow path connecting the internal flow path and the external flow path and the internal flow path, Resin that is a connection part to the external flow path while preventing inconvenience such as oozing out of the resin by welding the thermoplastic resin sheets in a molten state using the mold clamping of the divided mold The insert made can be molded at a time in a state where the insert is fixed to the edge, and the shape of the internal channel can be molded accurately and efficiently.
In particular, when the mold is clamped, the molten thermoplastic resin sheet is pressed against the outer surface of the resin insert, thereby ensuring adhesion between the thermoplastic resin sheet and the outer surface of the resin insert. As a result, the excess thermoplastic resin escapes around the pin protruding from the opening on one end surface of the resin insert, but forms a reservoir of excess thermoplastic resin around the pin. Therefore, while preventing excess thermoplastic resin from overflowing around the pin and into the internal flow path and blocking the internal flow path, in particular, one end surface of the resin sheet and the resin insert As a whole, while preventing the block of the extracorporeal liquid circulation channel, the leakage of the fluid in the extracorporeal liquid circulation channel is surely suppressed, and efficient molding is achieved. Is possible.

In order to achieve the above object, a method for producing a resin panel circuit of the present invention comprises:
A resin panel circuit that forms a part of an extracorporeal liquid circulation channel used for processing blood taken out of the body outside the body and returning it to the body, and opening from one end face to the other end face A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening,
A pair of split molds that are movable relative to each other between a mold clamping position and an open position, and at least one of the mold surfaces has a concave long groove for an internal flow path that is complementary to the internal flow path, and the surface And a pin positioned with respect to the surface so as to extend toward the pinch-off portion along the surface at a predetermined interval, and each of the surfaces of the one and the other molds extends toward the pinch-off portion. Preparing a pair of split molds each provided with a first recess for resin insert and a second recess for resin insert that are complementary to the resin insert;
Arranging a pair of thermoplastic resin sheets made of one and the other in a molten state at a distance from each other and between a pair of split molds in an open position;
A sealed space is formed between one thermoplastic resin sheet and the corresponding mold of the pair of molds, and the air is decompressed from the sealed space, thereby forming along the corresponding cavity. Forming a first groove for resin insert projecting toward the cavity and a concave long groove for internal flow path, and between the other thermoplastic resin sheet and the corresponding mold of the pair of molds. Forming a sealed space and reducing the air from the sealed space to form a second recessed groove for resin insert that is shaped along a corresponding cavity and protrudes toward the cavity; and
By passing the pin through the through-hole so as to partially protrude from the opening of one end surface of the insert, the first recess for insert and the second insert for insert are projected inward from the pinch-off portion. Disposing the resin insert positioned at a position corresponding to each of the recesses between two thermoplastic resin sheets;
By moving the pair of split molds to the clamping position, one and the other sheets at least at the outer peripheral edge of the concave long groove for the internal flow path among the surfaces facing the other sheet of the one thermoplastic resin sheet To form the internal flow path by closing the concave long groove for the internal flow path, and at each of the inflow opening and the outflow opening or the outflow / inflow opening formed at the edge, the one of the resin inserts Around the pin protruding from the opening on the end surface of the resin insert, a pool portion of a molten thermoplastic resin sheet pressed against the outer surface of the resin insert is formed, and the resin insert is inserted into the one and the resin It is made to contact | adhere to the inner surface of the 1st groove for resin inserts and the 2nd groove for resin inserts shape | molded by each other sheet | seat made from thermoplastic resin And a floor, has a configuration.

In order to achieve the above object, a method for producing a resin panel circuit of the present invention comprises:
A resin panel circuit that forms a part of an extracorporeal liquid circulation channel used for processing blood taken out of the body outside the body and returning it to the body, and opening from one end face to the other end face A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening,
A pair of split molds that are movable relative to each other between a mold clamping position and an open position, and at least one of the mold surfaces has a concave long groove for an internal flow path that is complementary to the internal flow path, and the surface And a pin positioned with respect to the surface so as to extend toward the pinch-off portion along the surface at a predetermined interval, and the surface of at least one mold extends toward the pinch-off portion. Preparing a pair of split molds provided with a first recess for resin insert that is complementary to the insert; and
Arranging a pair of thermoplastic resin sheets made of one and the other in a molten state at a distance from each other and between a pair of split molds in an open position;
By reducing the air pressure between one thermoplastic resin sheet and the corresponding one of the pair of molds, the resin is shaped along the corresponding cavity and protrudes toward the cavity. Forming a first concave groove for insert and a concave long groove for internal flow path;
By moving the pair of split molds to the clamping position, one and the other sheets at least at the outer peripheral edge of the concave long groove for the internal flow path among the surfaces facing the other sheet of the one thermoplastic resin sheet To form the internal flow path by closing the concave long groove for the internal flow path, and at each of the inflow opening and the outflow opening or the outflow / inflow opening formed at the edge, the one of the resin inserts Forming a pool portion of a thermoplastic resin sheet in a molten state that is pressed against the outer surface of the resin-made insert around the pin protruding from the opening of the end surface of the insert; By passing through the through hole so as to partially protrude from the opening of the first protrusion, the first recess for insert and The resin insert positioned at a position corresponding to each of the second insert recesses is in close contact with the inner surface of the first insert insert groove formed in the one thermoplastic resin sheet. , The configuration.

Further, the pool portion is formed around the pin protruding from the opening of the one end surface of the resin insert when the molten thermoplastic resin sheet is pressed against the outer surface of the resin insert. It is preferable to have a predetermined volume sufficient to store the thermoplastic resin that is released from the meat.
Furthermore, the pin has the same outer diameter as the inner diameter of the through hole of the resin insert, and by adjusting the protruding length of the pin protruding from the opening of the one end surface of the resin insert, Preferably, the method includes a step of adjusting the predetermined volume.

In addition, when clamping the pair of split molds, the distance between the outer surface of the resin insert and the surface of the mold corresponding to the outer surface is greater than the thickness of the thermoplastic resin sheet before shaping. On the other hand, the distance between the outer surface of the pin protruding from the opening of the one end surface of the resin insert and the surface of the mold corresponding to the outer surface is the thermoplastic resin sheet before shaping. It is preferable to set the surface property of the mold cavity or the outer shape of the resin insert so as to be wider than the thickness.
Furthermore, the said pool part is good to be formed by the protrusion part to the outward from the outer surface of the said pin which protrudes from the opening part of the said one end surface of the said resin-made insert.

Furthermore, the pool portion may be formed in a ring shape around the pin protruding from the opening of the one end surface of the resin insert.
In addition, the reservoir portion is deformed by an internal pressure by the fluid in the internal flow path according to the protruding length of the pin protruding from the opening of the one end surface of the insert so as to ensure the predetermined volume. It may be formed to have a thickness that does not occur.
Further, the predetermined volume may be set so that adhesion of the thermoplastic resin sheet to the annular surface around the pin of the end surface of the insert can be secured by the meat escape.

Furthermore, the first concave groove for resin insert extends continuously from the end of the concave long groove for the internal flow path toward the pinch-off portion,
On the surface of the cavity of the other mold, a concave long groove for an internal flow channel that is complementary to the internal flow channel is provided at a position corresponding to the concave long groove for the internal flow channel, and the second concave groove for resin insert Is extended from the end of the concave long groove for the internal flow path toward the pinch-off portion in a state where the pair of split molds are clamped,
In the mold clamping stage, the pair of split molds were shaped by the first concave groove of one thermoplastic resin sheet shaped by the concave long groove for the internal flow path and the concave long groove for the internal flow path. An internal flow path may be formed by the second concave groove of the other thermoplastic resin sheet.

Further, the one and / or the other thermoplastic resin sheet is preferably preformed in advance and reheated to be in a molten state.
Furthermore, you may have a step which extrudes between said one and said other molten-state thermoplastic resin sheet | seat toward the said pair of division | segmentation metal mold | die in the form which hangs below.
In addition, the extruded thermoplastic resin sheet may be formed into a sheet by extruding a molten cylindrical parison in the lateral direction.
Further, the extruded thermoplastic resin sheet may be formed into two sheets by extruding a molten cylindrical parison.

A first embodiment of a resin panel circuit according to the present invention will be described below in detail with reference to the drawings.
The resin panel circuit 200 in this embodiment forms part of an extracorporeal liquid circulation channel used for processing blood taken out from the body outside the body and returning it to the body, and the liquid in the extracorporeal liquid circulation channel. For example, a part of a blood purification passage used for processing blood taken out from the body by the blood purifier and returning it to the body is formed and supplied to the blood purifier. It is used to manage dialysis fluid and / or replacement fluid.

As shown in FIGS. 1 to 3, the resin panel circuit 200 has a panel-like two-layer structure in which two resin sheets 216 and 218 are bonded, and the inner surface 224 of the first resin sheet 216 By internally welding the inner surface 226 of the second resin sheet 218, the internal flow path 202 is formed inside, and the internal flow path 202 is provided at the edge 208 and connected to the external pipeline P. The resin panel circuit extends symmetrically with respect to the joint surface between the two resin sheets P1 and P2 and extends from the opening 210 to the inflow / outflow opening 212 provided at the edge 208 and connected to the external pipe P. Is done.
Here, surface welding means that the inner surface 224 of the first resin sheet 216 and the inner surface 226 of the second resin sheet 218 are portions other than the concave grooves (described later) constituting the internal flow path 202, respectively. It does not mean welding in a close contact form, but means that the inner flow path 202 is formed by the close contact between the edges constituting the respective concave grooves, and the portions other than the edges are closely contacted without any gaps. It is not always necessary.

Regarding the material of the resin panel circuit 200, it is necessary not to cause an increase or decrease in the flow rate of the liquid, and thus to cause no deformation of the shape of the internal flow path 202 regardless of the reduced pressure of the liquid flowing in the internal flow path 202. In this respect, the resin sheets 216 and 218 are particularly preferably hard plastics, and are preferably thermoplastic resins from the viewpoint of cost during molding or workability. Examples of thermoplastic resins include polyolefin resins, polyurethane resins, polyamide resins, polyester resins, silicone resins, ABS resins, polyvinyl chloride, polycarbonate, polystyrene, polyacrylate, polyacetal, etc., bending, cracking, etc. From the viewpoint of easy assembly, soft vinyl chloride or thermoplastic elastomer is particularly preferable.

As shown in FIG. 3, in the resin panel circuit 200, each of the first resin sheet 216 and the second resin sheet 218 is provided with a concave long groove 205 that forms a part of the internal flow path 202. The internal flow path 202 is configured by pasting together. More specifically, the cross-sectional shape of each concave long groove 205 is a semicircle, so that the internal flow path 202 has a circular cross section. The flow path cross section of the internal flow path 202, particularly the internal diameter, the total length of the internal flow path 202, the diameter of the curved portion, and the like are determined from the viewpoint of effectively managing the dialysate and / or the replacement fluid flowing through the internal flow path 202. That's fine.
As shown in FIG. 1, the end of the internal flow path 202 in the resin panel circuit 200 extends to the outer edge 208 of the resin panel circuit 200, and the internal flow path 202 and the external pipeline P are connected to the resin panel circuit 200. Are connected at the outer edge 208.
As shown in FIG. 4, the end of the internal flow path 202 is formed in an enlarged diameter circular cross-section, and is opened at the outer edge 208 of the resin panel circuit 200. As shown in FIG. 1, resin inserts 50, which will be described later, are disposed at each end of the internal flow path 202, that is, the inflow / outflow openings 210 and 212.

More specifically, as shown in FIG. 1, the resin panel circuit 200 has three systems for measuring and storing dialysate and / or replacement fluid, and each system is connected to an external pipe P. The gas inflow / outflow opening 210, the metering storage part 213, and the liquid / gas inflow / outflow opening 212 constituting the connection part to the external pipe P are provided. In addition, the measurement storage section 213 and the inflow / outflow opening 212 are connected to each other by the internal flow path 202, the outflow / inflow opening 212 and the outflow / inflow opening 210 are provided in the upper part of the circuit, and each system is provided in the lower part of the circuit. The metering storage unit 213 is provided.

  In FIG. 1, with respect to the first measurement storage section 213A located on the left side, the upper left inflow / outflow opening 210A and the upper part of the first measurement storage section 213A are connected via the internal flow path 202A, and the first measurement storage section 213A Are connected to each other via the internal flow path 202A, and the upper left and right inlet / outlet openings 210B and the upper part of the second weighing / reserving part 213B are connected to the second weighing / reserving part 213B located in the middle. Are connected via the internal flow path 202B, and the lower portion of the second metering storage portion 213B is connected to the left and right upper and right side inflow / outflow openings 212B via the internal flow path 202B, and is located on the right side. About the measurement storage part 213C, the upper right inflow / outflow opening 210C and the upper part of the third measurement storage part 213C are connected via the internal flow path 202C, and the third measurement storage part 213C. And inflow and outflow openings 212C of the lower and upper right side are connected through the internal flow path 202C. In addition, the measurement storage part 213 forms a measurement storage part 213 by providing a recessed part in each of the first resin sheet 216 and the second resin sheet 218 and bonding the both sheets in the same manner as the internal flow path 202. I am doing so.

With such a configuration, in each system, the dialysate and / or the replacement fluid that has flowed into the panel circuit from the external pipe P via the inflow / outflow opening 212 is sent to the corresponding measurement reservoir 213 via the internal flow path 202. On the other hand, it is sent from the metering storage part 213 to the external pipe P through the internal flow path 202 and the inflow / outflow opening 212.
In this case, in order to prevent the occurrence of precipitates in each of the inflow / outflow openings without causing fluid leakage in the outflow / inflow openings 210, 212 constituting the connection portion between the external pipe P and the internal flow path 202, From this point of view, the inner flow path 202 and the outer pipe are connected to the outflow / inflow opening 210 and the outflow / inflow opening 212 of the internal flow path 202 through a through passage 51 provided therein. A resin insert 50 is provided to connect the path P so as to communicate with each other.

As shown in FIGS. 4 to 7, the connection portion with the upper left external conduit P includes the inflow / outflow opening 212B of the second measurement storage unit 213B, the inflow / outflow opening 212A of the first measurement storage unit 213A, and the first measurement. The inflow / outflow opening 210A of the storage portion 213A is arranged in this order from top to bottom with a predetermined interval.
In the following, since the structure of the resin insert 50 alone is substantially the same in each of the inflow / outflow openings 210 and 212, the resin insert 50 installed in the aligned outflow / inflow openings will be described.

  As shown in FIGS. 8 to 11, the resin insert 50 is a different kind of resin that is difficult to weld to the thermoplastic resin sheets P <b> 1 and P <b> 2, and the through passage 51 extends from one opening end 75 to the other opening. A diameter-reduced portion 58 provided on the inner flow path 202 side and a diameter-expanded portion 57 on the outer conduit P side are extended to the end 77, and a shoulder is provided between the diameter-reduced portion 58 and the diameter-expanded portion 57. A portion 59 is formed, and the diameter D1 of the reduced diameter portion 58 is set to be the same as the diameter of the internal flow path 202. The diameter of the enlarged diameter portion 57 is increased until the outer pipe P contacts the shoulder 59. The diameter D2 of the internal fitting and the enlarged diameter portion 57 is set to be substantially the same as the outer diameter of the external conduit P. The opening end near the edge of the resin insert 50 is set substantially flush with the edge 208. Thereby, when the fluid flows into and out of the internal flow path 202 from the external pipe P, the inner diameter of the flow path is defined to be constant, so that the generation of precipitates can be prevented in a long-time treatment. In addition, if the resin insert 50 is the same type of resin as the thermoplastic resin sheets P1 and P2, the resin insert 50 can be welded to the thermoplastic resin sheets P1 and P2 when molding will be described later. Therefore, it is advantageous for close contact, but is not necessarily limited thereto.

The resin insert 50 is provided with an overhang portion 54 that protrudes from the peripheral side surface 52 of the resin insert 50, and as will be described in detail below, the overhang portion 54 fits into a recess 55 that will be described later. A pull-out preventing means for the resin insert 50 is formed.
As shown in FIG. 8, the resin insert 50 is an integrally molded product, the portion corresponding to the enlarged diameter portion 57 is formed in a columnar shape, and the portion corresponding to the reduced diameter portion 58 faces the internal flow path 202. The cylindrical portion 70 and the truncated cone portion 72 are concentric, and the projecting portion 54 is orthogonal to the cylindrical portion 70 and has a circular cross section of the cylindrical portion 70. It extends from the lower end 60 to the upper end 62.

The standing wall 64 constitutes an inclined surface 68 in which the front surface 66 facing the edge portion 208 is inclined downward toward the center line of the cylindrical portion 70.
As shown in FIG. 8, two standing walls 64 are provided at an interval in the longitudinal direction of the resin insert 50, and the front surface 66 facing one edge 208 is downward toward the center line of the cylindrical portion 70. The front surface 66 that faces the other internal flow path 202 constitutes the inclined surface 68 that slopes downward toward the center line of the cylindrical portion 70. The inclination angle α of the inclined surface 68 may be determined from the viewpoint of effectively preventing the resin insert 50 from being pulled out, and is, for example, 90 ° to 15 °. If it is 90 ° or more, it is disadvantageous in that it is difficult to release during molding, and if it is 15 ° or less, it is disadvantageous in that the drawing prevention means cannot be formed high and the drawing strength becomes insufficient. is there.
As described above, a plurality of internal flow paths 202 are provided, and accordingly, a plurality of resin inserts 50 are arranged in alignment at the edge portion 208, and the resin inserts 50 adjacent to each other with the protruding portions 54 are mutually connected. It performs the function of connecting.

As shown in FIGS. 6 and 7, the inner surfaces of both the resin sheets 216 and 218 have a shape complementary to the outer shape of the resin insert 50, and are made of resin near the edge 208 continuously to the concave long groove 205. A recess 74 for insert is provided, and a recess 55 complementary to the overhang 54 is provided on the inner surface of each of the two resin sheets P1 and P2, and the concave long groove 205, the recess 55 and the resin insert are used. The recesses 74 are formed so as to protrude to the outer surface sides of the corresponding resin sheets P1 and P2, and the resin inserts 216 and 218 are bonded to each other, whereby the resin inserts are formed by the resin recesses 74 for both resin inserts. An internal space for the overhanging portion 54 is formed by both concave portions 55 in the lateral direction.

With such a configuration, the overhanging portion 54 fits into the concave portion 55, thereby forming a pull-out preventing means for the resin insert 50. That is, even if a force that pulls the resin insert 50 along the extending direction from the edge of the resin panel circuit 200 is applied, the overhanging portion 54 is in contact with the concave portion 55, so that the pulling is prevented. The In addition, such a protruding portion 54 is not provided for each resin insert 50, but the shape of the portion connecting the columnar portions 70 arranged in parallel in the adjacent resin insert 50 is defined as the protruding portion 54. This eliminates the inconvenience of installing a plurality of resin inserts 50 on a management sheet or a resin sheet, and also allows the resin inserts 50 to be pulled out without taking additional measures to prevent pulling out. It becomes possible to prevent. Further, at the edge 208 of the resin panel circuit 200, the resin insert 50 is in close contact with the resin sheets P1 and P2 in a state where the columnar portions 70 arranged in parallel are connected. For this reason, even when an external force is applied, the edge 208 of the resin panel circuit 200 does not bend and deform, and peeling occurs at the boundary between the resin insert 50 and the resin sheets P1 and P2 in a close contact state. It can prevent suitably.
As shown in FIG. 23, at the boundary between the resin insert recess 74 and the concave long groove 205, a half-shaped annular shoulder 300 that is in close contact with one end surface 310A of the resin insert 50 is provided. The inner peripheral edge of the annular shoulder 300 is formed so as to match the diameter of the opening 312A of the one end surface 310A, and the resin sheet annular thickness is formed along the extending direction of the concave long groove 205 from the half-shaped annular shoulder 300. A thick portion 302 is provided, and the resin-made annular annular thick portion 302 has a thickness such that its inner peripheral surface forms a part of the concave long groove 205 and is not deformed by the internal pressure of the fluid in the internal flow path 202. The thickness T2 of the resin sheet annular thick portion 302 is set according to the diameter of the internal flow path 202, and is at least larger than the thickness T3 of the resin sheets P1 and P2 constituting the resin insert recess 74, and the internal flow path It is larger than the thickness T1 of the resin sheets P1, P2 around 202. As a result, when the panel circuit 200 is used, the halved annular shoulder 300 of the resin sheets P1 and P2 around the resin insert 50 is deformed by the internal pressure due to the fluid in the internal flow path 202, resulting in that. In particular, it is possible to reliably prevent leakage of fluid from between one end surface 310A of the resin insert 50 and the half-shaped annular shoulder 300 of the resin sheets P1 and P2, and the extracorporeal liquid circulation flow By preventing problems on the road, proper and smooth extracorporeal treatment of body fluid is possible.

The resin panel circuit 200 is molded by using a thermoplastic resin sheet P1 as a material for the first resin sheet 216 and a thermoplastic resin sheet P2 as a material for the second resin sheet 218, respectively. The resin insert 50 may be manufactured by adhering in a form sandwiched between both sheets, but it is directly shaped as a resin panel circuit 200 using the extruded thermoplastic resin sheet P in a molten state. As long as the molten state necessary for shaping and forming is realized, not only molding, but also using a material that has been once extruded and reheated and made into a molten state by cooling the thermoplastic resin sheet P. Shape and molding may be performed.

According to the resin panel circuit 200 described above, the resin panel circuit 200 forms a part of the extracorporeal liquid circulation channel.
In this case, the resin insert 50 is provided with an overhanging portion 54 projecting from the peripheral side surface 52, and on the other hand, at least one inner surface has a concave long groove 205 and a shape complementary to the outer shape of the resin insert 50. In addition, in the two resin sheets P1 and P2 provided with the resin insert recess 74 near the edge 208 in succession to the concave long groove 205, the inner flow path is formed by surface-bonding the inner surfaces to each other. Each of the two resin sheets P1 and P2 forming 202, or one of the inner surfaces thereof, is provided with a recessed portion 55 complementary to the protruding portion 54, and the protruding portion 54 fits into the recessed portion 55, thereby Even if a force that pulls out the insert 50 from the edge of the resin panel circuit 200 acts along its extending direction, the overhang 54 is in contact with the recess 55, thereby preventing the pull-out. From being, it is possible to prevent a situation such as leakage due to withdrawal of inadvertent resin insert 50, or extracorporeal treatment of smooth blood associated therewith may be impaired in advance.
Furthermore, in order to connect the internal flow path 202 and the external pipe P so that they can communicate with each other using the resin insert 50, the resin insert 50 has an opening from the opening 312A on one end surface 310A to the other end surface 310B. A through passage 51 extending in the longitudinal direction toward the portion 312B is provided inside, the resin insert 50 is brought into close contact with the resin insert recess 74 provided in the resin sheets P1 and P2, and the resin sheets P1 and P2 are adhered to each other. Is provided with a halved annular shoulder 300 in close contact with one end surface 310A of the resin insert 50 at the boundary between the concave long groove 205 continuous to the resin insert recess 74 and the resin insert recess 74. The inner circumferential edge of the half-shaped annular shoulder 300 is formed to coincide with the diameter of the opening 312A of one end surface 310A, and the concave long groove is formed from the half-shaped annular shoulder 300. Along the extending direction of 05, resin sheet P1, P2 annular thick portion 302 is provided, and resin sheet P1, P2 annular thick portion 302 has an inner peripheral surface that forms part of the concave long groove 205. In addition, since it has such a thickness that it does not deform due to the internal pressure of the fluid in the internal flow path 202, the half-shaped annular shoulder 300 of the resin sheets P1 and P2, which are the periphery of the resin insert 50, is used when used. Deformation is caused by the internal pressure due to the fluid in the flow path 202, and due to this, leakage of fluid from between the one end face 310A of the resin insert 50 and the half-shaped annular shoulder 300 of the resin sheets P1 and P2 in particular. Can be reliably prevented, and proper and smooth extracorporeal treatment of bodily fluid is possible by preventing problems with the extracorporeal liquid circulation channel.

Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. Hereinafter, the characteristic portions of the present embodiment will be described in detail.
The characteristic part of this embodiment is that the type of the panel circuit is different from that of the first embodiment and is a flat plate.
More specifically, as shown in FIG. 12, the resin panel circuit 200 is provided with two temperature control systems for dialysate or replacement fluid. In each system, the internal flow path 202 of the resin panel circuit 200 includes: While being formed in a meandering shape from the outflow opening 410 to the inflow opening 412, one of the thermoplastic resin sheets P1 and P2 (second resin sheet 218) is formed in a flat plate shape, and its outer surface has a heat transfer surface. A temperature adjusting plate (not shown) that adjusts the temperature of the liquid that is formed and flows in the resin panel circuit 200 is provided, and the outer surface 222 of the second resin sheet 218 is in surface contact with the temperature adjusting plate. I am doing so.

In this regard, unlike the first embodiment, the first resin sheet 216 is preferably at least thicker than the second resin sheet 218 from the viewpoint of ensuring the strength of the resin panel circuit 200. Similarly to the first embodiment, the resin panel circuit 200 includes a thermoplastic resin sheet P1 that is a material of the first resin sheet 216, and a thermoplastic resin sheet P2 that is a material of the second resin sheet 218. It is preferable to produce each by molding and surface-welding, but the sheet P1 made of thermoplastic resin has a high blow ratio at the time of molding because the concave long groove 205 is shaped, The thermoplastic resin sheet P2 is flat and has a relatively low blow ratio, so that the thermoplastic resin sheet P1 has a minimum thickness after shaping of a predetermined thickness or more. On the other hand, the thickness of the thermoplastic resin sheet P2 is preferably determined such that the maximum thickness portion after shaping is equal to or less than a predetermined thickness.

A meandering concave long groove 205 having a semicircular cross section is formed on the inner surface 224 of the first resin sheet 216, and the second resin sheet 218 is formed flat, and they are bonded together to form a meandering concave long groove. By closing 205, an internal flow path 202 is formed.
As shown in FIGS. 12 and 15, the internal flow path 202 is meandering, and has a configuration in which curved pipe portions 204 and straight pipe portions 206 are alternately connected from the outflow opening 410 toward the inflow opening 412. The pipe part 206 is arranged horizontally. The cross section of the internal flow path 202 is formed in a semicircular shape protruding toward the outer surface 220 of the first resin sheet 216. The cross section of the internal flow path 202, particularly the internal diameter, the total length of the meandering flow path, the diameter of the curved portion, etc. are determined from the viewpoint of effectively adjusting the temperature of the dialysate and / or the replacement fluid flowing through the internal flow path 202. That's fine.
A concave groove (not shown) of the second resin sheet 218 is partially formed at a position corresponding to the end of the internal flow path 202 of the meandering concave long groove 205 of the first resin sheet 216, thereby The outflow opening 410 and the inflow opening 412 having a circular cross section are formed without impairing the heat transfer function of the two-resin sheet 218.

The structure of the resin insert 50 is the same as that of the first embodiment, and the formation of the annular thickness portion 302 is also the same as that of the first embodiment.

As shown in FIGS. 12 and 15, the end portion of the internal flow path 202 in the resin panel circuit 200 is formed at the outer edge 208 of the resin panel circuit 200, and the internal flow path 202 and the external pipeline P are made of resin. Connected at the outer edge 208 of the panel circuit 200, the outflow opening 410 and the inflow opening 412 are arranged in a line at a predetermined interval in the vertical direction. At each end of the internal flow path 202, a resin insert 50 that connects the internal flow path 202 and the external conduit P so as to communicate with each other through a through passage 51 provided therein is a first resin sheet 216. And it arrange | positions in the aspect pinched | interposed into the inner surface of each 2nd resin-made sheet | seat 218. FIG.

As shown in FIG. 14, the blood purification apparatus is provided with a temperature adjustment plate 228 for adjusting the temperature of the liquid flowing in the resin panel circuit 200, and the temperature adjustment plate 228 is erected vertically, A support member 230 that supports the resin panel circuit 200 is provided in the part, and the outer surface 222 of the first resin sheet 218 faces the temperature adjustment plate 228 fixed to the base 232 through the support member 230. I try to make contact.
As a modification, unlike the first embodiment, the resin insert 50 may be disposed separately for each of the outflow opening 410 and the inflow opening 412 without being connected to each other, as shown in FIG. An overhang portion 54 is provided to protrude from the peripheral side surface 52 of the resin insert 50, and a recess having a shape complementary to the overhang portion 54 is provided on the inner surface of each of the two resin sheets P1 and P2. It is preferable that the pull-out preventing means for the resin insert 50 is formed by fitting the portion 54 into the recess.

According to the resin panel circuit 200 having such a configuration, the second resin sheet 218 of the resin panel circuit 200 is formed flat, and the cross section of the internal flow path 202 of the internal flow path 202 is the same as that of the resin panel circuit 200. Since the second resin sheet 218 of the resin panel circuit 200 is brought into surface contact with the temperature adjusting plate 228, the opening of the meandering concave long groove 205 is formed because the first resin sheet 216 is formed in a semicircular shape. Since it faces the inner surface 226 of the second resin sheet 218, heat from the temperature control plate 228 can be efficiently transferred to the liquid passing through the resin panel circuit 200 through the thin second resin sheet 218. As a result, the temperature of the liquid is adjusted efficiently.
In addition, the support part which supports various external piping may be provided in resin-made sheet | seats P1 and P2, and it may be shape | molded integrally with the resin-made panel circuit 200. FIG.

Next, a molding apparatus for such a resin panel circuit 200 will be described below.
As shown in FIG. 16, the molding device 10 of the resin panel circuit 200 includes an extrusion device 12 and a mold clamping device 14 disposed below the extrusion device 12, and is in a molten state extruded from the extrusion device 12. The thermoplastic resin sheet P is sent to the mold clamping device 14, and the thermoplastic resin sheet P in a molten state is molded by the mold clamping device 14. Here, since the apparatuses for extruding each of the two thermoplastic resins and sending them to the mold clamping device 14 are the same, only one of them will be described, and the other will be given the same reference number for the description. Omitted.
The thermoplastic resin sheet P1 is used to form a meandering concave long groove 205 corresponding to the internal flow path 202, while the thermoplastic resin sheet P2 is used to close the meandering concave long groove 205 and is thermoplastic. The outer surface of the resin sheet P2 is in surface contact with the temperature control plate 228.

The extruding device 12 is a conventionally known type, and a detailed description thereof is omitted. However, a cylinder 18 provided with a hopper 16, a screw (not shown) provided in the cylinder 18, and a screw are connected to the screw 18. The hydraulic motor 20, an accumulator 22 that communicates with the inside of the cylinder 18, and a plunger 24 provided in the accumulator 22, and a resin pellet introduced from the hopper 16 is screwed into the cylinder 18 by the hydraulic motor 20. The molten resin is melted and kneaded by the rotation of the resin, and the molten resin is transferred to the accumulator chamber 22 and stored in a certain amount. The plunger 24 is driven to feed the molten resin toward the T-die 28 and through the extrusion slit 34 to a predetermined length. A pair of extruded thermoplastic resin sheets P, spaced apart It is sent out downward while being pinched by the roller 30 and is suspended between the divided molds 32. Thereby, as will be described in detail later, the thermoplastic resin sheet P is disposed between the split molds 32 in a state of having a uniform thickness in the vertical direction (extrusion direction).

The extrusion capability of the extrusion device 12 is appropriately selected from the viewpoint of the size of the resin molded product to be molded, the draw-down of the thermoplastic resin sheet P, or the prevention of neck-in occurrence. More specifically, from a practical point of view, the extrusion amount of one shot in intermittent extrusion is preferably 1 to 10 kg, and the extrusion rate of the resin from the extrusion slit 34 is several hundred kg / hour or more, more preferably 700 kg / hour or more. Further, from the viewpoint of preventing the drawdown or neck-in of the thermoplastic resin sheet P, the extrusion process of the thermoplastic resin sheet P is preferably as short as possible, depending on the type of resin, MFR value, and melt tension value. In general, the extrusion process should be completed within 40 seconds, more preferably within 10 to 20 seconds. For this reason, the unit area and the amount of extrusion per unit time from the extrusion slit 34 of the thermoplastic resin are 50 kg / hour cm ² or more, more preferably 150 kg / hour cm ² or more.

By feeding the thermoplastic resin sheet P sandwiched between the pair of rollers 30 by the rotation of the pair of rollers 30 downward, the thermoplastic resin sheet P can be stretched and thinned, and extruded thermoplastic. By adjusting the relationship between the extrusion speed of the resin sheet P and the feeding speed of the thermoplastic resin sheet P by the pair of rollers 30, it is possible to prevent the occurrence of drawdown or neck-in. It is possible to reduce the restrictions on the type, in particular the MFR value and the melt tension value, or the extrusion rate per unit time.
As an alternative to the pair of rollers 30, before placing the thermoplastic resin sheet P between the pair of split molds 3223, for example, a lower portion of the thermoplastic resin sheet P is sandwiched by a known clamper. The wall thickness of the thermoplastic resin sheet P may be adjusted by pulling downward.

Referring to FIG. 16, the pair of rollers 30 will be described. The pair of rollers 30 are arranged below the extrusion slit 34 in such a manner that the respective rotation axes are arranged substantially parallel to each other, and one of them is a rotational drive roller 30A. Yes, the other is the driven roller 30B. More specifically, as shown in FIG. 16, the pair of rollers 30 are arranged so as to be line-symmetric with respect to the thermoplastic resin sheet P extruded in a form that hangs downward from the extrusion slit 34.
The diameter of each roller and the axial length of the roller may be appropriately set according to the extrusion speed of the thermoplastic resin sheet P to be molded, the length and width of the sheet in the extrusion direction, and the type of resin. As will be described later, from the viewpoint of smoothly feeding the thermoplastic resin sheet P downward by the rotation of the roller with the thermoplastic resin sheet P sandwiched between the pair of rollers 30, the diameter of the rotational drive roller 30A Is preferably slightly larger than the diameter of the driven roller 30B. The diameter of the roller is preferably in the range of 50 to 300 mm, and the thermoplastic resin sheet P is wound around the roller even when the roller curvature is too large or too small in contact with the thermoplastic resin sheet P. It may cause a problem.

As shown in FIGS. 17 and 18, the rotation driving roller 30A is provided with a roller rotation driving means 94 and a roller moving means 96. The roller rotation driving means 94 causes the rotation driving roller 30A to be centered on its axial direction. On the other hand, the roller driving means 96 allows the rotation driving roller 30A to move to the rotation driving roller 30B while maintaining a parallel positional relationship with the rotation driving roller 30B in a plane including the pair of rollers 30. It is made to move toward or away from the driven roller 30B.

More specifically, the roller rotation drive means 94 is a rotation drive motor 98 connected to the rotation drive roller 30A, and the rotation torque of the rotation drive motor 98 is rotated via, for example, a gear reduction mechanism (not shown). To communicate. The rotation drive motor 98 is conventionally known, and a rotation speed adjusting device 111 is attached so that the rotation speed can be adjusted. This rotation speed adjusting device 111 may adjust, for example, the current value for the electric motor. As will be described later, the extrusion speed at which the thermoplastic resin sheet P is extruded from the extrusion slit 34 and the rotation of the pair of rollers 30. Thus, the relative speed difference from the delivery speed at which the thermoplastic resin sheet P is delivered downward is adjusted according to the extrusion speed of the thermoplastic resin sheet P. For example, when a thermoplastic resin sheet P having a length of 2000 mm is fed in a feeding direction in 15 seconds using a pair of rollers having a diameter of 100 mm, the thermoplastic resin sheet P is fed by a roller for 15 seconds per shot. Therefore, the rotation speed of the roller can be calculated to be about 25.5 rpm. The feeding speed of the parison P, which is the thermoplastic resin sheet P, can be easily adjusted by increasing or decreasing the rotation speed of the roller.

As shown in FIG. 18, the rotation driven roller 30B rotates about the rotation axis of the roller over the end peripheral surface 102 so that the rotation driven roller 30B rotates in synchronization with the rotation driving roller 30A. The rotary drive roller 30 </ b> A has a second gear 108 that meshes with the first gear 104 and that can rotate about the rotation axis of the roller over the end surface 106.

As shown in FIG. 17, the roller moving means 96 is composed of a piston-cylinder mechanism, and the tip of the piston rod 109 is connected to a cover 121 that rotatably supports the rotational driving roller 30A in its axial direction. By adjusting, the piston 113 is slid with respect to the cylinder 115, whereby the rotational driving roller 30A is moved in the horizontal direction, so that the interval between the pair of rollers 30 can be adjusted. In this case, as will be described later, before the lowermost portion of the thermoplastic resin sheet P is supplied between the pair of rollers 30, the interval between the pair of rollers 30 is supplied. The sheet is made wider than the thickness (open position constituting the interval D1 in FIG. 17A) so that the thermoplastic resin sheet P is smoothly supplied between the pair of rollers 30, and then between the pair of rollers 30. The interval is narrowed so that the thermoplastic resin sheet P is sandwiched by the pair of rollers 30 (closed position constituting the interval D2 in FIG. 17A), and the thermoplastic resin sheet P is sent downward by the rotation of the roller. ing. The stroke of the piston 113 may be set so as to be the distance between the open position and the closed position. Further, by adjusting the air pressure, when the thermoplastic resin sheet P passes between the pair of rollers 30, it is also possible to adjust the pressing force acting on the thermoplastic resin sheet P from the rollers. The range of the pressing force is that the pair of rollers 30 is rotated so that no slip occurs between the surface of the pair of rollers 30 and the surface of the sheet P made of the thermoplastic resin. It is determined that the thermoplastic resin sheet P is surely sent downward so that the manufactured sheet P is not torn off, and is 0.05 MPA to 6 MPA, for example, depending on the type of resin.

As shown in FIG. 16, the extrusion slit 34 provided in the T die 28 is arranged vertically downward, and the thermoplastic resin sheet P extruded from the extrusion slit 34 is vertically suspended from the extrusion slit 34 in the vertical direction. It is sent downwards. The extrusion slit 34 can change the thickness of the thermoplastic resin sheet P by making the interval variable.
On the other hand, the mold clamping device 14 is also a conventionally known type like the extrusion device 12, and detailed description thereof will be omitted, but the two divided molds 32A and 32B and the molds 32A and 32B are melted. A mold driving device that moves between an open position and a closed position in a direction substantially orthogonal to the supply direction of the thermoplastic resin sheet P.

As shown in FIG. 16, the two divided molds 32A and 32B are arranged with the cavities 116 facing each other, and the cavities 116 are arranged along the substantially vertical direction. The surface of each cavity 116 is provided with an uneven portion according to the outer shape and surface shape of a molded product molded based on the molten thermoplastic resin sheet P.
More specifically, the surface of the cavity 116A of one mold 32A for molding the thermoplastic resin sheet P1 has a meandering concave shape that forms part of the internal flow path 202 on the outer surface 121 of the thermoplastic resin sheet P1. To form the long groove 205, a meandering concave long groove 205 and a complementary concave groove 119 are provided, and a resin-made concave groove 74 and a protruding concave portion 55 are respectively provided with complementary concave grooves.
On the other hand, on the surface of the cavity 116B of one mold 32B for molding the thermoplastic resin sheet P2, concave grooves 74 complementary to the resin-made concave groove 74 and the protruding portion concave portion 55 are formed. .
In this case, in each of the cavity 116A and the cavity 116B, the concave groove for the resin-made concave groove 74 is formed so as to continuously extend from the end on the pinch-off side of the concave groove 119 to the meandering concave long groove 205 toward the pinch-off portion. Then, the groove for the recessed portion 55 for the overhang portion is formed so as to continuously extend laterally from the side portion of the groove for the resin-made insert groove 74.
Further, when the pair of split molds 32 is clamped, the thermoplastic resin sheet P <b> 1 before the shaping is performed between the outer surface 314 of the resin insert 50 and the cavity surface of the mold 32 corresponding to the outer surface 314, The distance between the outer surface 316 of the pin 304 protruding from the opening 312A of the one end face 310A of the resin insert 50 and the cavity surface of the mold 32 corresponding to the outer surface 316 is narrower than the thickness of P2 before shaping. The surface property of the mold cavity or the outer shape of the resin insert 50 is set so as to be wider than the thickness of the thermoplastic resin sheets P1 and P2. As a result, as will be described later, when the split mold 32 is clamped, the thermoplasticity around the resin insert 50 when the pinch-off part 118A of the mold 32A and the pinch-off part 118B of the mold 32B come into contact with each other. The resin sheets P1 and P2 are compressed and the thermoplastic resin sheets P1 and P2 around the pins 304 are at least not compressed. As a result, as will be described later, the resin insert 50 When the surrounding thermoplastic resin sheets P1 and P2 are compressed and try to escape the meat around the pin 304 protruding from the tip of the resin insert 50, a pool portion 308 is formed around the pin 304, and the meat escape is an internal flow. It is possible to prevent the situation where the inside of the path 202 is blocked and the flow path is blocked. It is set to.
On the other hand, the distance between the outer surface 316 of the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50 and the cavity surface of the mold 32 corresponding to the outer surface 316 is made of a thermoplastic resin before shaping. If the thickness of the sheets P1 and P2 is too wide, adhesion failure between the molten thermoplastic resin sheets P1 and P2 around the outer surface 316 of the pin 304 and the outer surface 314 of the resin insert 50 occurs. The possibility of causing fluid leakage in the internal flow path 202 is increased. In particular, the end surface 310 of the resin insert 50 is, for example, a portion that is less likely to be in close contact with the resin sheet as compared to the outer surface 314 of the resin insert 50, and such a situation is likely to occur.
From the above, the distance between the outer surface 316 of the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50 and the cavity surface of the mold 32 corresponding to the outer surface 316, in other words, the reservoir 308. The volume needs to be set so as to prevent the internal flow path 202 from being blocked and to ensure adhesion between the thermoplastic resin sheet and the resin insert 50.
Further, a number of pins 304 positioned with respect to the cavity surface are provided by the number of the resin inserts 50 so as to extend toward the pinch-off portion 118 along the cavity surface with a predetermined distance from the cavity surface of the mold 32.
Each of the pins 304 has a solid cylindrical shape, has the same outer diameter as the inner diameter of the through-passage 51 of the resin insert 50, and protrudes from the opening 312A of one end surface 310A of the resin insert 50. The length can be adjusted so that the molds 32 are clamped so that the thermoplastic resin sheets P1 and P2 are sandwiched between the cavities 116A and B and the outer surface 316 of the pin 304, respectively. ing.

More specifically, the pin 304 is attached to a tie bar (not shown) via, for example, a base (not shown) so as to extend in a direction orthogonal to the moving direction of the pair of split molds 32A and 32B. Yes.
The pin 304 is positioned in a direction perpendicular to the relative movement direction of the pair of divided molds 32A and 32B, for example, by a known piston-cylinder mechanism (not shown), and a pinch-off position retracted outward from the pinch-off portion 118. It can be moved between the protruding position protruding inward from the portion 118. The protruding position of the pin 304 is determined according to the installation position of the resin insert 50, and in order to form a pool portion of a molten resin sheet around the pin 304 at the time of molding, as will be particularly described later. In addition, the amount of protrusion of the pin 304 from the tip of the resin insert 50 is determined.
More specifically, the amount of protrusion projecting inwardly from the pinch-off portion 118 is such that when the pair of split molds 32A and 32B are clamped, the thermoplastic resin sheet P is outside the cavity surface of the mold 32 and the pin 304. It is set so as to be pinched with the surface.
On the other hand, the reserved position of the pin 304 is a position that does not collide with the mold at least when the pair of divided molds 32A and 32B is opened.

In each of the two divided molds 32A and 32B, a pinch-off part 118 is formed around the cavity 116. The pinch-off part 118 is formed in an annular shape around the cavity 116, and the opposing molds 32A and 32B are formed. Protrusively toward. As a result, when the two divided molds 32A and 32B are clamped, the tip portions of the pinch-off portions 118 come into contact with each other, and the two molten thermoplastic resin sheets P1 and P2 are formed on the periphery thereof. It is welded so that the parting line PL is formed.
The distance between the surfaces of the opposing cavities 116A, B when the tip portions of the pinch-off portion 118 contact each other is at least smaller than the sum of the thickness of the thermoplastic resin sheet P1 and the thickness of the thermoplastic resin sheet P2. Accordingly, when the divided molds 32A and 32B are clamped, the thermoplastic resin sheet P1 and the thermoplastic resin sheet P2 can be surface-welded. Note that the pinch-off portion 118 may be provided in any one of the molds 32A and 32B.

A mold 33A is slidably fitted on the outer periphery of the mold 32A so as to be slidable in a sealed state, and the mold 33A can be moved relative to the mold 32A by a mold moving device (not shown). . More specifically, the mold frame 33A can be brought into contact with the side surface of the thermoplastic resin sheet P1 disposed between the molds 32A and 32B by projecting toward the mold 32B with respect to the mold 32A. is there. Although omitted in the drawing, similarly, a mold frame 33B is provided on the outer periphery of the mold 32B, and the mold frame 33B protrudes toward the mold 32A with respect to the mold 32B. The thermoplastic resin sheet P2 disposed between the molds 32A and 32B can be brought into contact with the side surface.

The mold driving device is the same as the conventional one, and the description thereof is omitted. However, the two divided molds 32A and 32B are respectively driven by the mold driving device and are divided into two in the open position. Two molten thermoplastic resin sheets P can be disposed between the molds 32A and 32B, and the pinch-off portions 118 of the two divided molds 32A and 32B are in contact with each other in the closed position. The annular pinch-off portions 118 abut against each other. Regarding the movement of the molds 32A and 32B from the open position to the closed position, the closed position, that is, the position where the pinch-off portions 118 are in contact with each other is between the two molten thermoplastic resin sheets P1, P2. The two molds 32A and 32B are driven by a mold driving device so as to move toward the positions at equal positions from both the thermoplastic resin sheets P1 and P2.
The extrusion device and the pair of rollers for the thermoplastic resin sheet P1, and the extrusion device and the pair of rollers for the thermoplastic resin sheet P2 are arranged symmetrically with respect to this closed position.

As shown in FIG. 20, a vacuum suction chamber 80 is provided inside the divided mold 32 </ b> A. The vacuum suction chamber 80 communicates with the cavity 116 </ b> A through the suction hole 82, and the suction hole 82 is opened from the vacuum suction chamber 80. By sucking through, the thermoplastic resin sheet P1 is adsorbed toward the cavity 116A and shaped into a shape along the outer surface of the cavity 116A. More specifically, meandering concave long grooves 205 are formed in the outer surface 121 of the thermoplastic resin sheet P1 by the recesses 119 provided on the outer surface of the cavity 116A. Although not shown, the divided mold 32B is similarly provided with a vacuum suction chamber that communicates with the cavity 116B via a suction hole.
On the other hand, a conventionally known blow pin 304 (not shown) is applied to the divided mold 32B so that when the molds 32A and 32B are clamped, blowing pressure can be applied from within the sealed space formed by both molds. Is installed.

A method for manufacturing the resin panel circuit 200 using the molding apparatus 10 for the resin panel circuit 200 having the above configuration will be described below with reference to the drawings.

First, the pin 304 is moved from the standby position to the protruding position. At that time, from the viewpoint of the volume required for the pool portion 308, the protruding length of the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50 is adjusted.
Next, in FIG. 16, a predetermined amount of the melted and kneaded thermoplastic resin is stored in the accumulator 22, and the stored thermoplastic resin is discharged from the extrusion slit 34 provided in the T die 28 at a predetermined amount per unit time. In this case, the thermoplastic resin swells and is extruded at a predetermined extrusion speed with a predetermined thickness so as to hang downward into a molten sheet.

Next, the pair of rollers 30 is moved to the open position, and the gap between the pair of rollers 30 disposed below the extrusion slit 34 is expanded beyond the thickness of the thermoplastic resin sheet P, thereby being extruded in a molten state. The lowermost portion of the thermoplastic resin sheet P is smoothly supplied between the pair of rollers 30. In addition, the timing which makes the space | interval of the rollers 30 wider than the thickness of the sheet P made of thermoplastic resin may be performed not after the start of extrusion but at the end of the secondary molding for each one shot.
Next, the pair of rollers 30 are moved close to each other and moved to the closed position, the interval between the pair of rollers 30 is narrowed to sandwich the thermoplastic resin sheet P, and the thermoplastic resin sheet P is moved downward by the rotation of the rollers. Send it out.
That is, by driving the piston-cylinder mechanism 96, as shown in FIG. 18B, the pair of rollers 30 are moved close to each other and moved to the closed position, and the interval between the pair of rollers 30 is reduced. The plastic resin sheet P is sandwiched, and the thermoplastic resin sheet P is sent downward by the rotation of the roller. At that time, while the thermoplastic resin sheet P in a swelled state due to the rotation of the roller 30 is being sent to the pair of rollers 30, the feeding speed of the thermoplastic resin sheet P downward by the pair of rollers 30 is The rotation speed of the roller is adjusted so as to be equal to or higher than the extrusion speed of the plastic resin sheet P.

More specifically, as the swelled thermoplastic resin sheet P is fed downward to the pair of rollers 30, the length of the thermoplastic resin sheet P that hangs down in the vertical direction becomes longer, resulting in drooping. The upper part of the thermoplastic resin sheet P is thinned by the weight of the thermoplastic resin sheet P (drawdown or neck-in), while the feeding speed by the pair of rollers 30 is higher than the extrusion speed. By adjusting the rotation speed of the roller, the thermoplastic resin sheet P is pulled downward by the pair of rollers 30, and the thermoplastic resin sheet P is stretched and thinned.
At this time, the rotational speed of the roller is reduced with the passage of time, and the feed speed is adjusted to approach the extrusion speed of the thermoplastic resin sheet P.

For example, while making the extrusion speed of the thermoplastic resin sheet P constant, the rotational speed of the roller may be decreased stepwise over time, or while making the rotational speed of the roller constant, the thermoplastic resin sheet The extrusion speed of P may be decreased stepwise over time, and within a range where the roller rotation speed is larger, both the rotation speed of the roller and the extrusion speed of the thermoplastic resin sheet P are stepwise over time. It may be varied.
In any case, as time elapses, the relative speed difference between the downward feeding speed of the thermoplastic resin sheet P due to the rotation of the pair of rollers 30 and the extrusion speed of the thermoplastic resin sheet P is reduced. Accordingly, the downward pulling force by the pair of rollers 30 decreases toward the upper part of the thermoplastic resin sheet P, and the thinning due to the pulling force is relatively reduced. It is possible to offset the formation and effectively prevent drawdown or neck-in, and thereby form a uniform thickness in the extrusion direction.
When the thickness of the thermoplastic resin sheet P is adjusted using the pair of rollers 30 as described above, the thermoplastic resin sheet P1 is formed by forming a concave groove constituting a part of the internal flow path 202. Since the blow ratio is high, the thickness is determined so that the minimum thickness after shaping is equal to or greater than the specified thickness, while the thermoplastic resin sheet P2 ensures surface contact with the temperature control plate. Therefore, it is flat except that a recess for forming the inflow opening 412 or the outflow opening 410 having a circular cross section is formed, and the blow ratio is lower than that of the thermoplastic resin sheet P1. It is preferable to determine the thickness so that the maximum thickness portion after forming becomes a predetermined thickness or less. In particular, the thickness of the thermoplastic resin sheet P1 is preferably set to be larger than the thickness of the thermoplastic resin sheet P2. What is necessary is just to adjust thickness using a pair of roller which opposes according to the thickness of each such thermoplastic resin sheet | seats P1 and P2.

Next, as shown in FIG. 16, the thermoplastic resin sheet P having a uniform thickness in the extrusion direction is disposed between the split molds 32 </ b> A and 32 </ b> B disposed below the pair of rollers 30. Thus, the thermoplastic resin sheet P is positioned in a form that protrudes around the pinch-off portion 118.
The above process is performed for each of the two thermoplastic resin sheets P1 and P2, and between the divided molds 32A and 32B, with the thermoplastic resin sheet P2 and the thermoplastic resin sheet P1 spaced apart from each other. To place.
In this case, as described above, the two thermoplastic resin sheets P1 and P2 are respectively divided by adjusting the interval between the extrusion slits 34 or the rotational speed of the pair of rollers 30 independently of each other. , B can be adjusted in thickness.
Next, as shown in FIG. 19, the mold 33A is moved relative to the mold 32A toward the thermoplastic resin sheet P1 until it contacts the outer surface 117 of the thermoplastic resin sheet P1 facing the mold 32A. .

Next, as shown in FIG. 19 and FIG. 20, the first part constituted by the cavity 116A of the mold 32A, the inner peripheral surface 102 of the mold 33A, and the outer surface 117 of the thermoplastic resin sheet P1 facing the mold 32A. The thermoplastic resin sheet P1 is pressed against the cavity 116A by being sucked from the vacuum suction chamber 80 through the suction hole 82 through the one sealed space 84, so that the thermoplastic resin has a shape along the uneven surface of the cavity 116A. Shape the sheet P1. As a result, the meandering concave long groove 205 is formed on the thermoplastic resin sheet P1 so as to protrude to the outer surface 117 side, so that a part of the internal flow path 202 is formed, and the thermoplastic resin sheet P1 In the vicinity of the pinch-off portion, a resin insert concave portion 74 and a protruding portion concave portion 55 are shaped so as to protrude toward the outer surface 117, and in parallel with the step of forming the meandering concave long groove 205, A sealed space is formed between the plastic resin sheet P2 and the corresponding mold 32B of the pair of molds 32, and air is decompressed from the sealed space, whereby the thermoplastic resin sheet P2 is sucked and heated. In the vicinity of the pinch-off portion 118 of the plastic resin sheet P2, the resin insert recess 74 and the overhang recess are formed so as to protrude to the outer surface 117 side.
In this case, in each of the thermoplastic resin sheets P1 and P2, the resin insert concave portion 74 is formed so as to continuously extend from the end portion on the pinch-off side of the meandering concave long groove 205 toward the pinch-off portion 118. The recess 55 for part is formed so as to continuously extend from the side of the recess 74 for resin insert.
When the sizes of the meandering concave long groove 205, the resin insert concave portion 74, and the overhang concave portion 55 to be formed are smaller than the size of the thermoplastic resin sheets P1 and P2, It is not necessary to form a sealed space by the molds 33A and 33B, and the sealed space is formed by directly applying the pinch-off portions 118 of the divided mold 32 corresponding to the surfaces of the thermoplastic resin sheets P1 and P2, respectively. Suction molding may be used.

Next, the resin insert 50 is disposed between the two thermoplastic resin sheets P1 and P2 disposed between the divided molds 32A and 32B. Specifically, the penetration path 51 of the resin insert 50 is fitted to the pin 304 positioned at the protruding position and positioned.
At this time, on the inner surfaces of the two thermoplastic resin sheets P1 and P2 facing each other, a resin insert recess 74 and an overhang recess 55 are formed as positioning marks. Since the resin sheets P1 and P2 are in a molten state, the resin insert 50 can be easily positioned with respect to a predetermined position of the resin sheets P1 and P2. A predetermined protruding amount from the tip of 50 is secured.
Moreover, since the resin-made insert 50 is formed in a state in which a plurality of cylindrical portions 70 connected to the external flow path are integrally arranged, it is compared with positioning the resin-made insert 50 individually. It is possible to carry out efficiently.

Next, as shown in FIG. 21, the thermoplastic resin sheet P1 is sucked and held in a state where the mold 33A that contacts the outer surface 117 of the thermoplastic resin sheet P1 is held as it is, and the plastic resin sheet While holding the thermoplastic resin sheet P2 in the same manner while holding the mold 33B that contacts the outer surface 117 of P2 in the same position, both the molds until the respective annular pinch-off portions 118A and B contact each other. The molds 32A and 32B are moved toward each other and clamped.
Accordingly, a pool portion 308 of a molten thermoplastic resin sheet pressed against the outer surface 314 of the resin insert 50 is provided around the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50. Form.
When the mold 32 is clamped, the molten thermoplastic resin sheet is pressed against the outer surface 314 of the resin insert 50, so that the thermoplastic resin sheet and the outer surface 314 of the resin insert 50 are in close contact with each other. As a result, excess thermoplastic resin escapes about the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50. Since the thermoplastic resin reservoir 308 is formed, it is possible to prevent excess thermoplastic resin from overflowing around the pin 304 and into the internal flow path 202 and closing the internal flow path 202. It becomes.
The reservoir portion 308 is formed by a protruding portion outward from the outer surface 316 of the pin 304 protruding from the opening portion 312A of the one end surface 310A of the resin insert 50, and the opening portion of the one end surface 310A of the resin insert 50 is formed. It is formed in a ring shape around a pin 304 protruding from 312A.
The pool portion 308 is formed around the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50 when the molten thermoplastic resin sheet is pressed against the outer surface 314 of the resin insert 50. It has a predetermined volume sufficient to store the thermoplastic resin that is released from the meat.
The reservoir 308 is deformed by the internal pressure of the fluid in the internal channel 202 according to the protruding length of the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50 so as to ensure a predetermined volume. It is formed to have a thickness that does not occur. The predetermined volume is set so that the adhesiveness of the thermoplastic resin sheet to the annular surface around the pin 304 on the end surface of the resin insert 50 can be ensured by the escape of meat.
On the other hand, by passing the pin 304 through the through passage 51 so as to partially protrude from the opening 312A of the one end surface 310A of the resin insert 50, the pin 304 protrudes inward from the pinch-off portion 118, and the resin insert insert The resin insert 50 positioned at a position corresponding to each of the first recess and the second recess for resin insert is formed on the inner surface of the first recess groove for resin insert formed in one of the thermoplastic resin sheets P1 and P2. Adhere closely.
Thereby, it is possible to ensure adhesion between the resin sheets P1 and P2 and the one end surface 310A of the resin insert 50, and the extracorporeal liquid is generally prevented while blocking the extracorporeal liquid circulation channel. It is possible to reliably suppress leakage of the fluid in the circulation channel and to perform efficient molding.
The pinch-off portions 118A and B are in contact with each other in the mold clamping direction between the two thermoplastic resin sheets P1 and P2, which are separated from each other, as shown in FIG. By abutting each other, a plane portion other than the meandering concave long groove 205 on the outer surface 121 of the thermoplastic resin sheet P1 and the outer surface of the thermoplastic resin sheet P2 are surface-welded, and the meandering concave long groove 205 Is closed, and the plurality of cylindrical portions 70 of the resin-made insert 50 and the overhanging portions 54 connecting them are respectively thermoplastic at the inlet / outlet openings of the inner channel 202. The resin sheets P1 and P2 are tightly fixed to the resin sheets P1 and P2 by being sandwiched between the opposing resin insert recess 74 and the overhang recess 55. Is, through passage 51 which communicates with the internal passage 202 is formed so as to extend to the edges 208 of the resin sheet P1, P2.

Next, as shown in FIG. 22, the split molds 32A and 32B are opened, the molded resin panel circuit 200 is taken out, the burr portions B outside the pinch-off portions 118A and B are cut, and the pins 304 are Retract to the reserved position. This completes the molding.
Next, an external pipe line is connected to each of the outflow opening 410 and the inflow opening 412 via the resin insert 50. Thus, the resin panel circuit 200 is completed.
Thus, for example, when a pulling force is unexpectedly applied to the external pipe line, the pulling-out part 54 of the resin insert 50 effectively prevents the liquid drawing from the connecting part with the external pipe line. Is possible.

As described above, each time the molten thermoplastic resin sheet P is extruded intermittently, it is possible to form the panel-shaped resin panel circuit 200 one after another by repeating the above steps. Then, the thermoplastic resin is intermittently extruded as molten thermoplastic resin sheets P1 and P2 by extrusion molding, and the thermoplastic resin sheets P1 and P2 extruded by vacuum molding or pressure molding are predetermined using a mold. It can be shaped into a shape.

As described above, as described above, before the divided mold 32 is clamped, a sealed space is formed between the cavity 116 and the resin material, and the resin material is sucked from the cavity 116 side to thereby apply the resin material. In addition to forming, even if the resin material is shaped by forming a sealed space in the divided mold 32 by clamping the mold 32 and applying blow pressure from the sealed space. Good. According to this method, by performing shaping by suction and shaping by blow pressure, for example, it is possible to ensure good moldability even when molding a complicated shape such as a tight curve of the internal flow path 202. Can do. Furthermore, when the divided mold 32 is clamped, the resin material may be shaped by applying a blow pressure from the sealed space while sucking the resin material from the cavity 116 side. According to this method, it is possible to similarly ensure good moldability by applying a blow pressure while removing air accumulated in the concave portion of the cavity 116 by suction.
Further, the positioning of the resin insert 50 with respect to the resin sheets P1 and P2 is not only performed after the forming step by evacuation of the thermoplastic resin sheets P1 and P2, but for example, the resin insert 50 is made of a thermoplastic resin. If positioning is performed with respect to the sheet P1, it may be performed after the forming step by evacuation of the thermoplastic resin sheet P1 and before the forming step by evacuation of the thermoplastic resin sheet P2.
Alternatively, in some cases, after the thermoplastic resin sheets P1 and P2 are arranged between the split molds 32A and 32B, before the forming step by vacuuming the thermoplastic resin sheets P1 and P2, the resin insert 50 Positioning with respect to the resin sheets P1 and P2 may be performed. In this case, as described above, unlike the case where the resin insert 50 is held by the resin sheets P1 and P2, for example, until the mold clamping process of the divided molds 32A and 32B, the resin insert 50 is used using, for example, a manipulator. 50 may be held.

According to the manufacturing method of the resin panel circuit 200 described above, by using the mold clamping of the divided mold 32, the molten thermoplastic resin sheets P1 and P22 are welded to each other, so that the resin oozes out. While preventing inconvenience, it is possible to mold the resin insert 50, which is a connection portion with the external pipe P, at a time while being fixed to the edge portion 208, and the shape of the internal flow path 202 can be accurately formed. The resin-made panel circuit that can be efficiently molded and manufactured by this method can achieve temperature adjustment of the liquid flowing in the internal flow path 202 that should be temperature-balanced with blood.
As a modification of the primary molding of the thermoplastic resin sheets P1 and P2, using a molten cylindrical parison, when extruding, cut each portion facing the diameter direction of the cylindrical parison along the extrusion direction. After being cut into two sheets by crushing or forming a sheet by crushing a cylindrical parison, it may be placed between the divided molds 32 and subjected to secondary molding. Alternatively, the press-molded sheet-shaped resin may be re-heated and then placed between the split molds 32 arranged in the horizontal direction to perform secondary molding.
Further, according to the method of manufacturing the resin panel circuit of the present embodiment, the pins 304 used for positioning the resin insert 50 with respect to the mold at the time of molding, in particular, the projection of the pin 304 from the tip of the resin insert 50 is used. The inside diameter of the internal flow path 202 is regulated using the periphery of the part, and the leakage of fluid from the internal flow path 202 during use is prevented while the internal flow path 202 is not blocked during molding. To do.
More specifically, when the mold is clamped, the molten thermoplastic resin sheet is pressed against the outer surface 314 of the resin insert 50, so that the thermoplastic resin sheet and the resin insert 50 are removed from each other. Where the adhesion to the surface 314 is ensured, excessive thermoplastic resin escapes around the pin 304 protruding from the opening 312A of the one end surface 310A of the resin insert 50. Since an excess thermoplastic resin reservoir 308 is formed around 304, excess thermoplastic resin overflows from the periphery of the pin 304, covers the internal flow path 202, and closes the internal flow path 202. While preventing, the reservoir part 308 is highly rigid so as to prevent deformation of the internal flow path 202 around the resin insert 50 due to the internal pressure of the fluid. In particular, it is possible to ensure adhesion between the resin sheets P1 and P2 and one end face 310A of the resin insert 50, and the extracorporeal liquid circulation is generally prevented while blocking the extracorporeal liquid circulation channel. It is possible to reliably suppress leakage of fluid in the flow path and to perform efficient molding.

Although the embodiments of the present invention have been described in detail above, various modifications or changes can be made by those skilled in the art without departing from the scope of the present invention. For example, in the present embodiment, the internal flow path 202 provided in the panel circuit has been described as the internal flow path 202 for dialysate or replacement fluid. However, the internal flow path 202 and the internal flow path for replacement fluid are not limited thereto. 202 may be formed in a meandering manner in parallel from the top to the bottom independently of each other.

In the present embodiment, the panel circuit type is a storage weighing type in the first embodiment, and a plurality of resin inserts 50 connected to each other are arranged on the edge portion, while the second embodiment. In the embodiment, it has been described that it is a flat plate type that performs temperature adjustment, and a plurality of resin inserts 50 are arranged independently from each other at the edge, but the temperature adjustment is performed as a panel circuit without being limited thereto. In the hybrid type of the flat plate type and the storage metering type, depending on the arrangement form of the plurality of internal flow paths 202 at the edge, at a certain edge, a plurality of resin inserts 50 as in the second embodiment. May be arranged independently of each other, and at another edge, a plurality of resin inserts 50 may be connected to each other as in the first embodiment.
Furthermore, in the present embodiment, two thermoplastic resins are used for the timing of placing the resin insert 50 between the two thermoplastic resin sheets P1 and P2 arranged between the split molds 32. Although the sheets P1 and P2 are disposed between the divided molds 32 and the two thermoplastic resin sheets P1 and P2 are respectively formed after vacuum suction molding, the present invention is not limited thereto. As long as the mold 32 is clamped, it may be anytime. Depending on circumstances, the thermoplastic resin sheets P1 and P2 may be disposed between the split molds 32, or the thermoplastic resin sheets P1 and P2 may be vacuum suction molded. You may do it in parallel.
Furthermore, in the present embodiment, the thermoplastic resin sheets P1 and P2 and the resin insert 50 have been described as different types of resin, but the present invention is not limited thereto, and the thermoplastic resin sheet is not limited thereto. The thermoplastic resin sheets P1 and P2 and the resin insert 50 may be the same type of resin as long as there is a possibility that the resin may protrude or leak due to pressure bonding.

1 is an overall plan view of a resin panel circuit according to a first embodiment of the present invention. It is sectional drawing which follows the line AA of FIG. It is sectional drawing which follows the line BB of FIG. It is a fragmentary perspective view around resin insert 50 of the resin panel circuit which concerns on 1st Embodiment of this invention. It is a partial top view around resin insert 50 of the resin panel circuit which concerns on 1st Embodiment of this invention. FIG. 6 is a cross-sectional view taken along line CC in FIG. 5. FIG. 6 is a cross-sectional view taken along line DD in FIG. 5. 1 is an overall perspective view of a resin insert 50 of a resin panel circuit according to a first embodiment of the present invention. It is a front view of resin-made insert 50 of the resin-made panel circuit which concerns on 1st Embodiment of this invention. It is sectional drawing which follows the line EE of FIG. In the resin panel circuit according to the first embodiment of the present invention, it is a schematic view showing a state in which an external pipe line is connected to an internal flow path 202 via a resin insert 50. FIG. It is a figure similar to FIG. 1 of the resin panel circuit which concerns on 2nd Embodiment of this invention. It is the same figure as FIG. 8 of the resin-made panel circuits 200 which concerns on the modification of 2nd Embodiment of this invention. It is the schematic which shows the condition where the resin-made panel circuit which concerns on 2nd Embodiment of this invention was attached to the temperature control board. It is a figure similar to FIG. 5 of the resin panel circuit which concerns on 2nd Embodiment of this invention. It is a side view which shows the state by which the molten resin sheet was arrange | positioned between the division molds 32 with the shaping | molding apparatus which concerns on embodiment of this invention. It is a schematic side view which shows the surroundings of a pair of roller of the shaping | molding apparatus which concerns on embodiment of this invention. It is a schematic plan view which shows a pair of roller periphery of the shaping | molding apparatus which concerns on embodiment of this invention. In the molding apparatus which concerns on embodiment of this invention, it is a schematic side view which shows the state which is making the outer frame of the division mold 32 contact | abut to the side surface of a molten resin sheet. In the shaping | molding apparatus which concerns on embodiment of this invention, it is a general | schematic fragmentary sectional view which shows the condition which is shaping the molten resin sheet. It is a figure which shows the state which clamped the division mold 32 in the shaping | molding apparatus which concerns on embodiment of this invention. In the molding apparatus which concerns on embodiment of this invention, it is a figure which shows the state which open | released the division mold 32. FIG. It is a schematic sectional drawing of the resin-made insert 50 of the resin-made panel circuit which concerns on 1st Embodiment of this invention.

P External pipe line P1, P2 Thermoplastic resin sheet D1 Diameter of reduced diameter part D2 Diameter of enlarged diameter part T1 Thickness around inner flow path T2 Thickness around reservoir T3 Thickness around insert 10 Molding device 12 Extrusion device 14 Mold Tightening device 16 Hopper 18 Cylinder 22 Hydraulic motor 24 Accumulator 26 Plunger 28 T die 30 Roller 32 Split mold 32
33 Formwork 34 Extrusion slit 50 Plastic insert 51 Through passage 52 Peripheral side surface 54 Overhang portion 55 Recessed portion 58 Reduced diameter portion 57 Expanded portion 59 Shoulder portion 60 Lower end 62 Upper end 64 Standing wall 66 Front surface 68 Inclined surface 70 Cylindrical portion 72 Wharf Conical portion 74 Resin insert recess 75 One opening end 77 The other opening end 94 Roller rotation driving means 96 Roller moving means 98 Rotation driving motor 102 End peripheral surface 104 First gear 106 End peripheral surface 108 Second gear 110 Piston Cylinder mechanism 111 Rotational speed adjusting device 112 Shallow groove 116 Cavity 118 Pinch-off part 200 Resin panel circuit 202 Internal flow path 204 Curved pipe part 205 Concave groove 206 Straight pipe part 208 Edge part 210 Outflow / inflow opening 212 Outflow / inflow opening 213 Storage part 216 First resin sheet 218 Second resin sheet 220 outer surface 222 outer surface 22 Inner surface 226 in the surface 228 temperature adjustment plate 230 the support member 232 base 300 halved annular shoulder 302 annular thick portion 304 pin 308 reservoir 310 end face 312 opening 314 outer surface 316 outer surface 410 outlet opening 412 inlet opening

Claims (26)

A resin panel circuit that forms part of an extracorporeal fluid circulation channel used to treat body fluids taken out of the body outside the body and return them to the inside of the body, provided at the edge and connected to the external channel In the resin panel circuit having a liquid internal flow path extending from an inflow opening or an outflow / inflow opening to an outflow opening or an outflow / inflow opening provided at an edge and connected to an external flow path, the resin panel circuit is And an inner portion formed by forming a concave long groove on the inner surface of at least one of the resin sheets and performing surface bonding on the inner surface of the other resin sheet. A resin insert that connects the internal flow channel and the external flow channel so that the internal flow channel and the external flow channel can communicate with each other. The internal channel has a through passage extending in the longitudinal direction from the opening of one end face toward the opening of the other end face, and the internal flow path and the external flow path are connected to each other through the through path. The resin sheet has a shape complementary to the outer shape of the resin insert at a position corresponding to the inflow opening or the outflow opening or the outflow / inflow opening, and is continuous with the concave long groove and close to the edge. is plastic insert recess provided on the tip of the concave portion for resin inserts, the half annular shoulder in close contact with the one end surface of the resin inserts are provided, the semi split annular shoulder An inner peripheral edge is formed so as to coincide with the diameter of the opening of the one end face, and a resin sheet annular thick portion is provided along the extending direction of the concave long groove from the half annular shoulder, The resin sheet annular thick part has an inner peripheral surface Serial concave longitudinal groove forms a part of, has a thickness enough not to be deformed by the internal pressure caused by fluid in the internal flow channel, the resin panel circuit, characterized in that. 2. The resin according to claim 1, wherein a thickness of the annular thick portion of the resin sheet is set according to a diameter of the internal flow path and is at least larger than a thickness of the resin sheet constituting the recess for the resin insert. Panel circuit made. The resin insert is provided with an overhang portion that projects from the peripheral side surface of the resin insert, and at least one inner surface of the resin sheet is provided with a recess that is complementary to the overhang portion, The resin panel circuit according to claim 1, wherein the overhanging portion is fitted into a recess having a shape complementary to the overhanging portion to form a pull-out preventing means for the resin insert. The through passage has a reduced diameter portion provided on the inner flow path side and a enlarged diameter portion on the external flow path side, and a shoulder portion is formed between the reduced diameter portion and the enlarged diameter portion. The diameter of the reduced diameter portion is set to be the same as the diameter of the internal flow path, and the external flow path is internally fitted in the enlarged diameter section until the opening end surface thereof abuts on the shoulder portion, The resin panel circuit according to claim 1, wherein a diameter of the diameter portion is set to be the same as an outer diameter of the external flow path. A plurality of the internal flow paths are provided, and accordingly, the resin inserts having a plurality of columnar portions are arranged in alignment at the edges, and the columnar portions of the adjacent resin inserts are connected to each other. The resin panel circuit according to claim 3, which constitutes the overhang portion. The resin insert is provided with an overhang portion that projects from the peripheral side surface of the resin insert, the resin insert is an integrally molded product, and the portion corresponding to the enlarged diameter portion is formed in a columnar shape. and a cylindrical portion, a portion corresponding to the reduced diameter portion, said an internal passage frustoconical portions formed tapered truncated conical towards the circular column portion and said frusto-conical portion 5. The resin panel circuit according to claim 4 , wherein the overhanging portion is a concentric shape, and the protruding portion forms an upright wall extending from a lower end to an upper end of a circular cross section of the cylindrical portion perpendicular to the cylindrical portion. The said standing wall is a resin panel circuit of Claim 6 in which the front surface which faces the said edge part comprises the inclined surface which inclines below toward the centerline of the said cylindrical part. Two standing walls are provided at intervals in the longitudinal direction of the resin insert, and the front surface facing one of the edges constitutes an inclined surface inclined downward toward the center line of the cylindrical portion. The resin-made panel circuit according to claim 7, wherein the other front surface facing the internal flow path constitutes an inclined surface inclined downward toward the center line of the cylindrical portion. The resin panel circuit is formed in a flat plate shape, the internal flow path is formed in a meandering shape, and one of the resin sheets is formed in a flat plate shape, and an outer surface thereof forms a heat transfer surface. The resin panel circuit according to claim 1. 4. The resin-made product according to claim 3, wherein each of the concave long groove, the recessed portion complementary to the protruding portion, and the resin-made insert recessed portion is formed so as to protrude to the outer surface side of the corresponding resin-made sheet. Panel circuit. 2. The resin panel circuit according to claim 1, wherein the internal channel is formed with a reservoir for storing a liquid that communicates with the internal channel. A resin panel circuit that forms a part of an extracorporeal fluid circulation channel used to process bodily fluids taken out of the body and return them to the inside of the body, from one end face opening to the other end face opening A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening, which is relatively movable between a mold clamping position and an open position And a concave long groove for an internal flow channel complementary to the internal flow channel, and a predetermined distance from the surface toward the pinch-off portion along the surface. Against the surface to extend The positioning the pin is provided on the surface of one and the other of the mold, extending toward the pinch-off portion, and the resin insert the first recess and the second recess for plastic inserts for plastic insert shape complementary Preparing a pair of split molds provided with a pair of thermoplastic resin sheets made of one and the other in a molten state, spaced from each other and disposed between the pair of split molds in an open position When, by passing the pin into the through-passage so as to protrude partially from the opening of the one end face of the resin inserts, in a form projecting from the pinch-off portion inward, first recess for the resin insert and to place the resin insert which is positioned at a position corresponding to the second recess each for the resin insert between sheet made two thermoplastic resin Forming a sealed space between the stage and one of the thermoplastic resin sheets and the corresponding mold of the pair of molds, and reducing the air from the sealed space, thereby forming along the corresponding cavity Forming a first recessed groove for resin insert projecting toward the cavity and forming a sealed space between the other thermoplastic resin sheet and the corresponding mold of the pair of molds. Forming a second groove for resin insert projecting toward the cavity by forming air along the corresponding cavity by decompressing air from the sealed space, and the pair of split molds Of the one thermoplastic resin sheet on the outer peripheral edge of the concave long groove for the internal flow path on the surface of the one thermoplastic resin sheet facing the other thermoplastic resin sheet. An inner flow path is formed by welding a sheet made and closing the concave long groove for the internal flow path, and each of the inflow opening and the outflow opening or the outflow / inflow opening formed in the edge portion of the resin insert One and the other thermoplasticity are formed around the pin projecting from the opening of the one end surface while forming a reservoir of a molten thermoplastic resin sheet pressed against the outer surface of the resin insert A step of bringing the resin insert into close contact with the inner surface of each of the first concave groove for resin insert and the second concave groove for resin insert formed on each resin sheet. Manufacturing method of resin panel circuit. A resin panel circuit that forms a part of an extracorporeal liquid circulation channel used for processing blood taken out of the body outside the body and returning it to the body, and opening from one end face to the other end face A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening, which is relatively movable between a mold clamping position and an open position And a concave long groove for an internal flow channel complementary to the internal flow channel, and a predetermined distance from the surface toward the pinch-off portion along the surface. Against the surface to extend Positioned pins are provided, and the first recesses for resin inserts and the resin insert inserts are formed on the surfaces of one and the other molds, each extending toward the pinch-off portion and having a shape complementary to the resin inserts. A step of preparing a pair of split molds each provided with two recesses, and a pair of thermoplastic resin sheets made up of one and the other in a molten state, spaced apart from each other, between a pair of split molds in an open position A sealed space is formed between the thermoplastic resin sheet and the corresponding mold of the pair of molds, and the air is decompressed from the sealed space to form a corresponding cavity. Forming the first concave groove for resin insert projecting toward the cavity and the concave long groove for internal flow path, and forming the other thermoplastic resin sheet Resin that forms a sealed space between the corresponding molds of a pair of molds, decompresses air from the sealed space, and shapes along the corresponding cavity and protrudes toward the cavity A step of forming a second groove for insert insert, and the pin is protruded inward from the pinch-off portion by passing the pin through the through passage so as to partially protrude from the opening of one end face of the resin insert. In the form, the resin inserts positioned at positions corresponding to the first recesses for resin inserts and the second recesses for resin inserts are disposed between two thermoplastic resin sheets, By moving the pair of split molds to the clamping position, at least the inner flow path of the surface of the one thermoplastic resin sheet facing the other thermoplastic resin sheet An inner flow path is formed by welding one and the other thermoplastic resin sheets at the outer peripheral edge of the concave long groove and closing the concave long groove for the internal flow path, and an inflow opening and an outflow formed at the edge A molten thermoplastic resin sheet that is pressed against the outer surface of the resin insert around the pin protruding from the opening of the one end surface of the resin insert at each of the opening and the inflow / outflow opening. while forming a reservoir, the adhesion of the resin insert to the inner surface of the one and the other thermoplastic resin sheet first groove for the resin inserts are shaped respectively and the second grooves for the resin insert And a resin panel circuit manufacturing method comprising the steps of: A resin panel circuit that forms a part of an extracorporeal liquid circulation channel used for processing blood taken out of the body outside the body and returning it to the body, and opening from one end face to the other end face A resin insert that connects the external flow path and the internal flow path of the resin panel circuit via a through-passage that extends in the longitudinal direction toward the portion is provided at the edge, A method of manufacturing a resin panel circuit having an internal flow path extending from a connected inflow opening or outflow / inflow opening to an outflow opening or outflow / inflow opening, which is relatively movable between a mold clamping position and an open position And a concave long groove for an internal flow channel complementary to the internal flow channel, and a predetermined distance from the surface toward the pinch-off portion along the surface. Against the surface to extend A pair of split molds provided with a first recess for resin insert, which is provided with a positioned pin and which extends toward the pinch-off portion and is complementary to the resin insert on the surface of at least one mold. A step of preparing, a step of arranging a pair of thermoplastic resin sheets made of one and the other in a molten state at a distance from each other between a pair of split molds in an open position, and a sheet of one thermoplastic resin The first concave groove for resin insert that is shaped along the corresponding cavity by projecting air from between the corresponding mold of the pair of molds and the pair of molds and protrudes toward the cavity, and forming an inner flow path concave length groove, by moving the pair of split molds to mold clamping position, the other made of a thermoplastic resin of one of the thermoplastic resin sheet Of the opposing surfaces Doo, forming an internal flow path by at least one internal flow path concave outer peripheral edge of the long groove and the other thermoplastic resin sheet by welding, to close the internal flow path concave length groove In addition, in each of the inflow opening and the outflow opening or the outflow / inflow opening formed in the edge portion, around the pin protruding from the opening portion of the one end surface of the resin insert, the outer surface of the resin insert Pinch-off by passing the pin through the through passage so as to partially protrude from the opening of one end face of the resin insert while forming a pool portion of the molten thermoplastic resin sheet pressed The resin insert positioned at a position corresponding to the first recess for resin insert in a form protruding inward from the portion is made of one thermoplastic resin. And a step of adhering to the inner surface of the first groove for the resin insert which is shaped into a sheet, a manufacturing method of the resin panel circuit, characterized in that. The pool portion is directed around the pin protruding from the opening of the one end surface of the resin insert when a molten thermoplastic resin sheet is pressed against the outer surface of the resin insert. The method for manufacturing a resin panel circuit according to claim 12, wherein the resin panel circuit has a predetermined volume sufficient to store the thermoplastic resin to be released from the meat. The pin has the same outer diameter as the inner diameter of the through- passage of the resin insert, and the predetermined volume is adjusted by adjusting a protruding length of the pin protruding from the opening of the one end surface of the resin insert. The manufacturing method of the resin panel circuit of Claim 15 which has the step which adjusts. While clamping the pair of split molds, the distance between the outer surface of the resin insert and the surface of the mold corresponding to the outer surface is narrower than the thickness of the thermoplastic resin sheet before shaping, The distance between the outer surface of the pin protruding from the opening of the one end surface of the resin insert and the surface of the mold corresponding to the outer surface is wider than the thickness of the thermoplastic resin sheet before shaping. The method for producing a resin panel circuit according to claim 15 or 16, wherein the surface property of the mold cavity or the outer shape of the resin insert is set. The said pool part is formed by the protrusion part to the outward from the outer surface of the said pin which protrudes from the opening part of the said one end surface of the said resin-made insert. The manufacturing method of the resin-made panel circuit of description. The method for manufacturing a resin panel circuit according to claim 18, wherein the pool portion is formed in a ring shape around the pin protruding from the opening of the one end surface of the resin insert. The reservoir portion is not deformed by the internal pressure of the fluid in the internal flow path according to the protruding length of the pin protruding from the opening of the one end surface of the resin insert so as to ensure the predetermined volume. The method for manufacturing a resin panel circuit according to claim 15, wherein the resin panel circuit is formed to have a thickness of a certain degree. 21. The resin-made product according to claim 20, wherein the predetermined volume is set so that adhesion of the thermoplastic resin sheet to an annular surface around the pin of the end surface of the resin-made insert can be ensured by the meat escape. Panel circuit manufacturing method. The first concave groove for resin insert extends continuously from the end of the concave long groove for the internal flow path toward the pinch-off portion, and the concave long groove for the internal flow path is formed on the surface of the cavity of the other mold. And a concave long groove for an internal flow channel that is complementary to the internal flow channel, and the second groove for resin insert has the internal flow in a state in which the pair of split molds are clamped. One of the thermoplastic resin sheets that extends continuously from the end of the concave groove for the road toward the pinch-off portion, and is molded by the concave long groove for the internal channel in the clamping step of the pair of split molds. a first groove, by a shaped been other second grooves in the thermoplastic resin sheet by the internal flow path concave length grooves, internal flow path is formed, one of the claim 12 or claim 13 A method for producing a resin panel circuit according to claim 1. The method for producing a resin panel circuit according to any one of claims 12 to 14, wherein one and / or the other thermoplastic resin sheet is preformed in advance and reheated to be in a molten state. . 15. The method according to claim 12, further comprising a step of extruding between the pair of split molds in a form in which one and the other molten thermoplastic resin sheets are suspended downward. Manufacturing method of resin panel circuit. The method for producing a resin panel circuit according to claim 24, wherein the extruded thermoplastic resin sheet is formed into a thermoplastic resin sheet shape by extruding a molten cylindrical parison in the lateral direction. The method for producing a resin panel circuit according to claim 24, wherein the extruded thermoplastic resin sheet is formed into two thermoplastic resin sheet shapes by extruding a molten cylindrical parison.

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