JP2006051625A - Manufacturing method of composite porous body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a composite porous body enhanced in the handleability of a porous body with high precision and high efficiency without sacrificing the effective area of the porous body. <P>SOLUTION: In the manufacturing method of the composite porous body wherein the sheetlike porous body 22 having a three-dimensional reticulated structure and a resin part provided so as to surround the outer peripheral edge of the porous body 22 are integrally formed, the porous body 22 and a resin member 21 are continuously passed through a closely bonding process which is constituted so as not only to pressurize at least the inner peripheral edge 21b, which comes into contact with the hole 21a, of the resin member 21 in its thickness direction excepting at least a part or the whole of the outer peripheral edge 21c thereof but also to heat the resin member 21 to a temperature not lower than the load bending temperature of the resin member 21 but not higher than the melting point thereof to closely bond the porous body 22 and the resin member 21 while crushing the resin member 21 in a state that the hole 21a formed to the resin member 21 is filled with the sheetlike porous body 22 and a cooling process for cooling the porous body 22 and the resin member 21 while pressing them in the thickness direction thereof in this order by a force not larger than the elasticity limit of the resin member 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for producing a composite porous body suitable for producing a composite porous body used for a filter, a gas diffusion member, a heat radiating member, a water absorbing member and the like.

The porous body has a three-dimensional network structure, and has air permeability, water absorption, light weight, and a large surface area because pores opened in the side portions communicate with each direction. Taking advantage of this characteristic, the porous body is applied to various uses such as a filter, a gas diffusion member, a heat radiating member, and a water absorbing member, and is provided in various devices.
Such a porous body can be manufactured by various methods. For example, it can be manufactured by firing a green sheet G obtained by thinly forming and drying a slurry S containing a metal powder. The slurry S is a mixture of, for example, a metal powder such as SUS316L, an organic binder (for example, methylcellulose or hydroxypropylmethylcellulose), and a solvent (water). Further, the slurry S is sublimated or vaporized by heat treatment as necessary. An agent (for example, a water-insoluble hydrocarbon-based organic solvent having 5 to 8 carbon atoms (for example, neopentane, hexane, heptane)), an antifoaming agent (ethanol), or the like is added.

  Hereinafter, a method for producing a porous body will be described with reference to FIG. First, the slurry S is supplied from the hopper 31 in which the slurry S is stored onto the carrier sheet 33 conveyed by the roller 32. The slurry S on the carrier sheet 33 is extended between the moving carrier sheet 33 and the doctor blade 34 and formed into a required thickness. The formed slurry S is further conveyed by the carrier sheet 33 and passes through the heating furnace 35. And it dries in the heating furnace 35, and the green sheet G of the state which the SUS316L powder was joined by the organic binder is formed.

In addition, when a foaming agent is contained in the slurry S, the slurry S in a state of being extended on the carrier sheet 33 is heat-treated in a high humidity atmosphere before drying to foam the foaming agent to obtain a foamed slurry. The green sheet G is formed by performing a drying process.
The green sheet G is removed from the carrier sheet 33, and then degreased and fired in a vacuum furnace (not shown), thereby removing the organic binder and forming a porous body in which metal powders are sintered.

By the way, since the porous body formed in this way has the property that it is generally low in strength and easily deformed, there is a problem that this handling is difficult. Therefore, in order to prevent damage to the porous body that occurs during handling such as when a filter element made of a porous body is incorporated in a filter device, a configuration is disclosed in which the end region of the filter element is filled with a different substance and reinforced. (See, for example, Patent Document 1 below).
In addition, in order to provide a fixing hole for attaching a metal foam as a porous body to the apparatus, a portion for improving the strength is provided by filling a solid such as metal or plastic into the pores of the porous body. A configuration is disclosed (for example, see Patent Document 2 below).
Japanese Patent Laid-Open No. 48-13956 Japanese Patent Application Laid-Open No. 08-53723

  However, in the prior art, the porous body is filled with resin or the like, and the strength of the porous body is improved by the filled portion. Therefore, when a hole for fixing is provided in the filled portion, for example, with resin It is necessary to cut two kinds of materials like metal at the same time, so that it is difficult to process and shape formation becomes difficult. In addition, since the porous body is generally difficult to manufacture and expensive, it is desired to utilize the porous body without waste to fully exhibit its characteristics. On the other hand, the reinforcement in which the surface of the porous body is coated with resin, metal or the like reduces the effective area of the porous body, resulting in an increase in cost.

  The present invention has been made in view of the above problems, and is a composite that can produce a composite porous body with improved accuracy in handling the porous body without sacrificing the effective area of the porous body. It aims at providing the manufacturing method of a porous body.

  In order to solve the above problems and achieve the above object, the method for producing a composite porous body of the present invention includes a sheet-like porous body having a three-dimensional network structure, and an outer peripheral edge of the porous body. A composite porous body integrally formed with a resin portion provided so as to surround the resin portion, wherein the thickness of the hole formed in the surface of the sheet-like resin member is made thinner than that of the resin member. In the state where the porous body is loaded, at least the inner peripheral edge part in contact with the hole is pressed in the thickness direction except for part or all of the outer peripheral edge part of the resin member, and the resin member An adhesion step of closely contacting the porous body and the resin member while crushing the resin member by heating at a temperature equal to or higher than the deflection temperature under load and below the melting point, and cooling for cooling the porous body and the resin member The process goes through in this order The features.

According to this invention, since the said composite porous body is formed through the said close_contact | adherence process and the said cooling process in this order, a highly accurate composite porous body can be manufactured reliably.
For example, when the composite porous body is manufactured by insert molding in which a porous body is used as an insert part and a resin portion surrounding the outer periphery of the porous body is injection-molded, the composite porous body is a thin plate. The injected resin may not spread evenly around the outer periphery of the porous body, and the injection pressure and temperature of the molten resin acting on the porous body are not uniform at the outer periphery of the porous body. Thus, deformation such as warpage is likely to occur in the formed composite porous body.
However, in the adhesion step, while pressing the resin member in a state where a porous body is loaded in the pores of the resin member, and heating the resin member at a temperature not lower than the melting point and not higher than the melting point, Since the porous body and the resin member are brought into close contact with each other, it becomes possible to easily prevent the resin portion from becoming uneven as described above and the heating temperature of the resin member from becoming uneven. A highly accurate composite porous body can be reliably produced.

  Further, in the adhesion step, the resin member enters into the pores opened in the side portion of the porous body, and the porous body and the resin member are in close contact with each other. Can be joined. Furthermore, since the cooling step is performed after the contact step, the resin member that is in close contact with the porous body in the heated state can be rapidly cooled and reliably bonded.

  Since the composite porous body formed as described above has the resin portion disposed on the outer peripheral edge of the low-strength porous body, the handling of the porous body can be improved. Further, since the resin portion surrounds the outer peripheral edge of the porous body and is arranged so as to protrude from the outer peripheral edge, it becomes possible to perform machining, for example, only in the resin portion, A shape such as a hole for fixing the device can be easily provided.

  In particular, in the contact step, the outer peripheral edge of the resin member is loaded with the porous body having a thickness smaller than that of the resin member in the hole formed on the surface of the sheet-like resin member. The porous body and the resin member are brought into close contact with each other by pressing at least the inner peripheral edge portion in the thickness direction, excluding a part or all of the portion, and crushing the resin member by heating. In the composite porous body to be formed, at least a part of the outer peripheral edge portion of the resin portion can be formed thicker than the inner peripheral edge portion. In such a composite porous body, the strength can be further improved, the handling property can be improved reliably, and the resin portion is deformed when the resin portion is machined. It is possible to suppress the above to the minimum, and the holes and the like can be provided easily and with high accuracy.

Here, it is preferable that the cooling step cools the porous body and the resin member while pulling in the surface direction.
In this case, the expansion of the resin member due to the heating in the contact process can suppress deformation such as undulation of the resin member, and can surely restrain the contraction behavior of the resin member during the cooling described above. become. Even if the resin member is deformed in the adhesion step, the deformation can be corrected to a desired shape and size. As described above, combined with the adhesion step, a highly accurate composite porous body can be more reliably formed.

In addition, the welding step and the cooling step are sequentially performed in this order while conveying the porous body and the resin member, and the cooling step includes the porous body and the resin member in their conveying directions. It is desirable to gradually lower the cooling temperature from the rear side to the front side.
In this case, since the welding step and the cooling step are successively performed in this order while conveying the porous body and the resin member, the composite porous body can be formed with high efficiency. Further, in the cooling step, the resin member heated in the welding step is gradually cooled, and when the porous body and the resin member reach the cooling step from the adhesion step, a temperature difference at that time Thus, the resin member can be prevented from rapidly contracting, and the resin member can be prevented from being distorted or broken.

Furthermore, after passing through a preheating step of heating the porous body and the resin member at a temperature equal to or lower than the heating temperature in the adhesion step, gradually increasing the temperature from the rear side to the front side in the transport direction, It is desirable to go through an adhesion process.
In this case, since the preheating step is performed immediately before the adhesion step, the adhesion between the porous body and the resin member in the adhesion step can be reliably realized.

  Further, it is preferable that the adhesion step is performed after a punching step of punching a sheet-shaped resin member to form the hole and a loading step of loading the porous body into the hole in this order. In this case, further highly efficient production of the composite porous body can be realized. In particular, since the thickness of the resin member is larger than the thickness of the porous body, when the resin member is punched in the punching step, the resin member is deformed in the surface direction and shear force is applied in the thickness direction. It is possible to avoid the inconvenience that it cannot be transmitted well and it is difficult to form the holes with high accuracy, and it is possible to easily form the holes with high accuracy.

Further, the resin member is elongated, and after being subjected to the punching step, the loading step, the adhesion step, and the cooling step in this order while being conveyed in the longitudinal direction, the outer peripheral edge of the resin member It is desirable to cut through at least a part of the part to form the composite porous body.
In this case, at least a part of the outer peripheral edge of the resin member is made thicker than the inner peripheral edge by the adhesion step, and at least a part of the outer peripheral edge is cut to form the composite porous body. During the cutting, the resin member is deformed in the surface direction and the shearing force cannot be transmitted well in the thickness direction, and it is difficult to form a composite porous body with high accuracy. And a highly accurate composite porous body can be easily formed.

  1 to 3 show a composite porous body manufacturing apparatus 10 according to an embodiment of the present invention, which is loaded into a sheet-like resin member 21 and holes 21 a formed in the resin member 21. A conveying means (not shown) that conveys the porous body 22, extends in a direction substantially orthogonal to the conveying direction F of the resin member 21, and is rotatable about a rotation axis that is horizontal with the surface of the resin member 21. The outer surface of the resin member 21 and the porous body 22 has a schematic configuration including a roll portion 11 configured to be in contact with at least one of the front surface side and the back surface side.

In the present embodiment, the resin member 21 is elongated and is transported in the longitudinal direction by the transport means, and the porous body 22 is made thinner than the resin member 21. ing. The apparatus 10 is provided at a rear end portion in the transport direction F, and has a first punch portion 14 that punches the hole 21 a in a long sheet-like resin member 21, and the first punch portion 14. And a loading means 15 for loading the porous body 22 into the hole 21a and a front end portion in the conveyance direction F. The resin member 21 to which the peripheral surface and the porous body 22 are joined is cut to a desired length to form a second punch portion 16 that forms a composite porous body 40 (see FIG. 4).
In the above configuration, the apparatus 10 includes the first punch unit 14, the loading unit 15, the roll unit 11, and the second punch unit 16 arranged in this order from the rear side to the front side in the transport direction F. It becomes the composition.

The roll portion 11 adds a part of the outer peripheral edge portion 21c of the resin member 21 (a portion extending in a direction intersecting the transport direction F) and an inner peripheral edge portion 21b in contact with the hole 21a in the thickness direction. A contact roll portion 17 that is configured to press and heat the resin member 21 at a temperature that is greater than or equal to the deflection temperature of the load and below the melting point, and crushes the resin member 21 while closely contacting the porous body 22 and the resin member 21; The cooling roll unit 18 configured to cool the porous body 22 and the resin member 21 while pressing the porous member 22 and the resin member 21 in the thickness direction with a force equal to or less than the elastic limit of the resin member 21 is arranged in this order in the rear of the conveyance direction F. It is set as the structure provided sequentially from the side toward the front side.
Furthermore, in this embodiment, the roll part 11 is provided with the preheating roll part 19 arrange | positioned between the close_contact | adherence roll part 17 and the loading means 15, and lower temperature than the heating temperature by the close_contact | adherence roll part 17. FIG.

  Each of the above roll portions 17 to 19 is disposed so as to sandwich the resin member 21 and the porous body 22 from the front and back surfaces thereof, and the resin member 21 and the porous body 22 in a transported state are each of the roll portions 17 to 17. When the arrangement position 19 is reached, the outer surfaces of the roll portions 17 to 19 press the resin member 21 and the porous body 22 in their thickness directions and rotate around the rotation axis as described above. By being driven, it is sent out toward the front side in the transport direction F. Moreover, each said roll part 17-19 is connected with the drive means which is not illustrated separately, respectively, and the rotational speed of these each roll parts 17-19 can be controlled separately. Further, the central portion in the rotation axis direction of each of the roll portions 17 to 19 and the direction intersecting the transport direction F of the resin member 21 and the porous body 22, that is, the central portion in the width direction are substantially coincident with each other. It has become.

  Here, the cooling roll unit 18 includes a plurality of cooling rolls 18a continuously provided in the transport direction F, and among these cooling rolls 18a, the surface of the roll 18a located at the rear end in the transport direction F. The surface temperatures of these rolls 18a are gradually lowered from the rear side to the front side in the transport direction F so that the surface temperature of the roll 18a located at the front end is the lowest. Further, the surface speeds of these cooling rolls 18 a are all substantially the same, and are larger than the surface speed of the contact roll part 17.

  The preheating roll unit 19 includes a plurality of preheating rolls 19a continuously provided in the transport direction F. Among these preheating rolls 19a, the surface temperature of the roll 19a located at the rear end in the transport direction F is the highest. The surface temperatures of these rolls 19a are gradually increased from the rear side toward the front side in the transport direction F so that the surface temperature of the roll 19a located at the front end is the lowest. In addition, the surface temperature of the preheating roll 19a located at the front end in the conveyance direction F is set to a temperature equal to or lower than the heating temperature in the adhesion process described later.

  Among the roll parts 17 to 19 described above, the size of the welding roll part 17 and the cooling roll part 18 in the rotation axis direction is substantially the same as the width of the inner peripheral edge part 21b of the resin member 21, and these The central part in the rotation axis direction of the roll parts 17 and 18 and the central part in the width direction of the resin member 21 and the porous body 22 in the transport state are substantially coincided with each other. Therefore, in the process in which the resin member 21 and the porous body 22 sequentially pass through the welding roll portion 17 and the cooling roll portion 18 as described later, the outer surfaces of these roll portions 17 and 18 are the outer peripheral edge portions of the resin member 21. 21c is made non-contact.

  Next, a description will be given of a method for manufacturing the composite porous body 40 in which the resin portion 41 is disposed on the outer peripheral edge portion of the porous body 22 over the entire periphery by the manufacturing apparatus 10 configured as described above. To do.

  First, a portion of the resin member 21 that has reached the position where the first punch portion 14 is disposed is punched by the punch portion 14 to form a hole 21a (punching step). Further, when the resin member 21 is further conveyed and the hole 21a reaches the arrangement position of the loading unit 15, the loading unit 15 loads the porous body 22 into the hole 21a (loading step).

  Thereafter, when the resin member 21 and the porous body 22 are similarly transported, these 21 and 22 reach the arrangement position of the preheating roll unit 19. At this time, the resin member 21 and the porous body 22 sequentially pass through the outer peripheral surfaces of the plurality of preheating rolls 19a rotated around the rotation axis in a state of being in contact with the front and back surfaces. In this process, since the surface temperature of the plurality of preheating rolls 19a is sequentially increased from the rear side to the front side in the transport direction F, the resin member 21 and the porous body 22 are gradually heated (preheating step). ). The heating temperature at this time is set to a temperature equal to or lower than the heating temperature in the next adhesion step.

  Then, the resin member 21 and the porous body 22 that have passed through the preheating roll unit 19 reach the arrangement position of the contact roll unit 17. At this time, the resin member 21 and the porous body 22 pass through the outer peripheral surface of the contact roll portion 17 rotated about the rotation axis in a state of being in contact with the front and back surfaces. As described above, the size of the contact roll portion 17 in the rotation axis direction is substantially the same as the width of the inner peripheral edge portion 21b of the resin member 21, and the contact roll portion 17 is centered in the rotation axis direction. Portion and the central portion in the width direction of the resin member 21 and the porous body 22 in the transported state substantially coincide with each other, so that the outer peripheral surface of the contact roll portion 17 is the front and back surfaces of the porous body 22 and the resin. The front and back surfaces of the inner peripheral edge portion 21b of the member 21 and the front and rear surfaces of the outer peripheral edge portion 21c that extend in the width direction, and the front surface portion of the outer peripheral edge portion 21c that extends in the transport direction F. The back surface is not contacted.

  In this process, portions extending in the width direction of the inner peripheral edge portion 21b and the outer peripheral edge portion 21c of the resin member 21 are pressed in the thickness direction, and the temperature of the resin member 21 is equal to or higher than the load deflection temperature and lower than the melting point. The porous body is crushed by crushing the portions extending in the width direction of the inner peripheral edge portion 21b and the outer peripheral edge portion 21c of the resin member 21 until they are substantially equal to the thickness of the porous body 22 22 and the resin member 21 are brought into close contact (contact step). At this time, the porous body 22 and the resin member 21 are in close contact with each other in a state where the resin member 21 enters a depth of about 5 μm to 1000 μm in the pores opened in the side portion of the porous body 22. Moreover, since the part extended in the said conveyance direction F among the said outer periphery part 21c of the resin member 21 was made into non-contact with the contact | adherence roll part 17, the thickness of this part is maintained with being thicker than the porous body 22, Of the inner peripheral edge portion 21b and the outer peripheral edge portion 21c, the portion extending in the width direction is crushed by the contact roll portion 17, so that it has substantially the same thickness as the porous body 22.

  Next, when the resin member 21 and the porous body 22 are further conveyed, the resin member 21 and the porous body 22 reach the position where the cooling roll unit 18 is disposed. At this time, the resin member 21 and the porous body 22 are pressed by the outer peripheral surfaces of the plurality of cooling rolls 18a rotated around the rotation axis with a force equal to or less than the elastic limit of the resin member 21 in the thickness direction. Pass through in sequence. As described above, the size of the cooling roll 18a in the rotation axis direction is substantially the same as the width of the inner peripheral edge portion 21b of the resin member 21, and the cooling roll 18a has a central portion in the rotation axis direction. Since the resin member 21 in the transported state and the central portion in the width direction of the porous body 22 are substantially coincident with each other, the outer peripheral surface of the cooling roll 18a is connected to the front and back surfaces of the porous body 22 and the resin member 21. The front and back surfaces of the inner peripheral edge portion 21b are in contact with the front and back surfaces of the outer peripheral edge portion 21c that extend in the width direction, and the front and back surfaces of the outer peripheral edge portion 21c that extend in the transport direction F Contactless. That is, the cooling roll 18 a presses a portion of the resin member 21 crushed by the contact roll portion 17 in the contact process in the thickness direction with a force equal to or less than the elastic limit of the resin member 21.

  In this process, the surface speed of the cooling roll 18a on the outer surface due to the rotation is larger than that of the contact roll section 17, that is, the feed speed of the resin member 21 and the porous body 22 toward the front side in the transport direction F. However, since the thing by the cooling roll 18a is made larger than the thing by the contact | adherence roll part 17, while the resin member 21 and the porous body 22 are pulled toward the front side in the said conveyance direction F, several cooling roll 18a Since the surface temperature is lowered sequentially from the rear side to the front side in the transport direction F, the resin member 21 and the porous body 22 are gradually cooled (cooling step). Thereby, the resin member 21 heated by the said close_contact | adherence process is cooled, and the resin member 21 and the porous body 22 are joined.

Next, when transported in the same manner, the resin member 21 and the porous body 22 reach the position where the second punch portion 16 is disposed, and the resin member 21 is cut to a desired length, whereby the composite porous The material 40 is formed (cutting step). At this time, in the outer peripheral edge portion 21c of the resin member 21, the entire region in the width direction including the portion having the largest thickness, that is, the portion extending in the transport direction F is cut.
Among the above steps, in the preheating step, the close contact step, and the cooling step, as described above, the outer peripheral surface of the roll members 17 to 19 is rotated around the rotation axis and the resin member 21 or The resin member 21 and the porous body 22 (hereinafter simply referred to as “resin member 21 or the like”) are in contact with the front and back surfaces. Accordingly, in the process in which the resin member 21 and the like pass through these steps, the resin member 21 and the like can be continuously conveyed without being stopped.

  In the composite porous body 40 formed as described above, for example, as shown in FIG. 4, a plurality of porous bodies 22 are arranged at intervals in the plane direction, and between these porous bodies 22. The resin part 41 is provided so as to fill and surround the entire outer peripheral edge and project from the outer peripheral edge, and a plurality of porous bodies 22 and the resin part 41 are integrally formed into a rectangular thin plate shape. Further, in the composite porous body 40, a portion extending in the longitudinal direction of the outer peripheral edge portion 41 b of the resin portion 41, that is, in the process of forming the composite porous body 40 by the device 10, the transport direction F The extending portion (hereinafter simply referred to as “thick portion”) 41a has the largest thickness. The composite porous body 40 can be used as a filter, a water absorbing member, a heat radiating body and the like by being attached to the apparatus by fixing or sandwiching the resin portion 41. In particular, since the resin portion 41 of the composite porous body 40 has the thick portion 41a, it is possible to reliably improve the handleability of the composite porous body 40 and to machine the resin portion 41. It is possible to minimize the deformation of the resin portion 41 when applying the above, and the holes and the like can be provided easily and with high accuracy.

As described above, according to the method for manufacturing a composite porous body according to the present embodiment, the composite porous body 40 is formed through the adhesion step and the cooling step in this order, so that a highly accurate composite porous body is formed. 40 can be manufactured reliably.
For example, when the composite porous body 40 is manufactured by insert molding in which the porous body 22 is an insert part and the resin portion 41 surrounding the outer periphery of the porous body 22 is injection-molded, the composite porous body 40 is In the case of a thin plate, the injected resin may not spread evenly around the entire outer periphery of the porous body 22, and the injection pressure and temperature of the molten resin acting on the porous body 22 may be different from each other. 22 becomes uneven at the outer peripheral edge, and the formed composite porous body 40 is likely to be deformed such as warpage.
However, in the adhesion step, the resin member 21 is pressurized with the porous body 22 loaded in the hole 21a of the resin member 21 and heated at a temperature not lower than the deflection temperature and not higher than the melting point, thereby causing the resin member 21 to be heated. Since the porous body 22 and the resin member 21 are brought into close contact with each other while being crushed, the resin portion 41 and the heating temperature of the resin member 21 are easily prevented from being uneven as described above. Therefore, the highly accurate composite porous body 40 can be reliably manufactured.

  Moreover, in the said close_contact | adherence process, since the resin member 21 enters into the pore opened to the side part of the porous body 22, and the porous body 22 and the resin member 21 contact | adhere, these 21 and 22 are cooled and joined Then, it can join firmly by the anchor effect. Here, if the porous body 22 has a pore diameter or porosity that is too small, the resin member 21 cannot enter the pores, so the anchor effect is insufficient, and the bonding strength with the resin portion 41 cannot be sufficiently obtained. There is a risk of peeling at this joint. On the other hand, if the pore diameter and the porosity are too large, the strength is insufficient, the compression force acting due to the contraction behavior of the resin member 21 cannot be withstood, and there is a risk of deformation. Therefore, it is more preferable that the pore diameter is about 10 μm to 2 mm and the porosity is about 40 to 98%.

  Furthermore, since the cooling step is performed after the contact step, the resin member 21 that is in close contact with the porous body 22 in a heated state can be rapidly cooled and reliably bonded. In particular, in this cooling step, since the resin member 21 and the porous body 22 are pressed in the thickness direction, it becomes possible to restrain the shrinkage behavior of the resin member 21 during cooling, and the composite porous body 40 can be manufactured with high accuracy.

  Further, in the cooling process, the porous body 22 and the resin member 21 are cooled while being pulled toward the front side in the transport direction F. Therefore, the resin member 21 undulates due to the expansion of the resin member 21 due to the heating in the contact process. It is possible to suppress deformation such as the above, and it is possible to reliably restrain the shrinkage behavior of the resin member 21 during the cooling described above. Even if the resin member 21 is deformed in the contact step, the deformation can be corrected to a desired shape and size. As described above, combined with the adhesion step, the highly accurate composite porous body 40 can be more reliably formed.

Further, in the cooling step, the cooling temperature of the porous body 22 and the resin member 21 is gradually lowered from the rear side to the front side in the transport direction F, and the resin member 21 heated in the contact step is gradually cooled. When the porous body 22 and the resin member 21 go through the cooling step from the adhesion step, it becomes possible to prevent the resin member 21 from rapidly shrinking due to the temperature difference at that time, and the resin member 21 is distorted. Generation | occurrence | production or fracture | rupture can be suppressed.
In addition, since the porous body 22 and the resin member 21 undergo the preheating process immediately before the adhesion process, the adhesion between the porous body 22 and the resin member 21 in the adhesion process can be reliably realized.

  Furthermore, the sheet-like resin member 21 having a long length was punched to perform a punching process for forming the plurality of holes 21a and a loading process for loading the porous body 22 into the plurality of holes 21a in this order. Later, since the adhesion process is performed, further highly efficient production of the composite porous body 40 can be realized. In particular, since the thickness of the resin member 21 is larger than the thickness of the porous body 22, when the resin member 21 is punched in the punching step, the resin member 21 is deformed in the surface direction and the thickness direction Therefore, it is possible to avoid the problem that the shearing force cannot be transmitted to the surface and it is difficult to form the hole 21a with high accuracy, and the high-precision hole 21a can be easily formed.

  Moreover, the part which extends in the said conveyance direction F among the said outer periphery part 21c of the resin member 21 is thickened by the said contact | adherence process from the thickness of the said inner periphery part 21b, and it extends in the said conveyance direction F among this outer periphery part 21c. Since the composite porous body 40 is formed by cutting the entire region in the width direction including the portion, the resin member 21 is deformed in the surface direction and the shear force is transmitted well in the thickness direction during the cutting. This makes it possible to avoid the problem that it is difficult to form the composite porous body 40 with high precision, and the composite porous body 40 with high precision can be easily formed.

  In addition, each structural member shown in the above embodiment, its various shapes, combinations, etc. are examples, and can be variously changed based on a design request | requirement in the range which does not deviate from the meaning of this invention. For example, since the material of the resin member 21 may be any material that can be melted by heating, such as a thermoplastic resin, it can be appropriately selected according to the application in consideration of heat-resistant temperature, hardness, and the like.

  Moreover, the porous body 22 is not limited to the one manufactured by the method shown in FIG. Furthermore, in the said embodiment, although the composite porous body 40 was finally formed through the said cutting process using the resin member 21 made into elongate, it is not restricted to this, For example, the resin member 21 is beforehand, The composite porous body 40 may be formed by cutting to the length of the composite porous body 40 to be formed and then performing the above-described steps except the cutting step.

  Moreover, although the structure which touches the resin member 21 and the porous body 22 from both the surface side and the back surface side was shown as the roll part 11 in the said embodiment, you may make it contact from one side among these. . Furthermore, in the said embodiment, although the resin member 21 was welded to the porous body 22 by the welding roll part 17, it is not restricted to this roll, For example, a press may be sufficient. In this case, the entire outer peripheral edge of the resin portion 41 can be formed thicker than the inner peripheral edge. Therefore, in the formed composite porous body, the above-described improvement in handling properties and high accuracy are achieved. Can be realized more reliably.

  A composite porous body with improved handling of the porous body can be produced with high accuracy and high efficiency without sacrificing the effective area of the porous body.

It is a partially expanded sectional front view which shows the manufacturing apparatus of the composite porous body shown as one Embodiment of this invention. It is a schematic side view which shows the manufacturing apparatus of the composite porous body shown as one Embodiment of this invention. FIG. 3 is a partially enlarged plan view of the composite porous body manufacturing apparatus shown in FIG. 2. It is a top view which shows an example of the composite porous body formed with the manufacturing apparatus of the composite porous body shown as one Embodiment of this invention. It is a schematic side view which shows the manufacturing apparatus of the porous body shown to FIG. 3 and FIG.

Explanation of symbols

21 resin member 21a hole 21b inner peripheral edge 21c of resin member outer peripheral edge 22 of resin member 22 porous body 40 composite porous body 41 resin part F transport direction

Claims (6)

A method for producing a composite porous body in which a sheet-like porous body having a three-dimensional network structure and a resin portion provided so as to surround the outer peripheral edge of the porous body are integrally formed,
In a state where the porous body having a thickness smaller than that of the resin member is loaded in the hole formed on the surface of the sheet-like resin member, a part or all of the outer peripheral edge portion of the resin member is loaded. Except for pressing the inner peripheral edge part in contact with the hole in the thickness direction and heating the resin member at a temperature not lower than the melting point and not higher than the melting point, while crushing the resin member, An adhesion step for bringing the resin member into close contact;
The manufacturing method of the composite porous body which passes through the cooling process which cools the porous body and the resin member in this order. In the manufacturing method of the composite porous body according to claim 1,
The said cooling process cools, pulling the said porous body and the said resin member to the surface direction, The manufacturing method of the composite porous body characterized by the above-mentioned. In the manufacturing method of the composite porous body according to claim 1 or 2,
The welding step and the cooling step are sequentially performed in this order while transporting the porous body and the resin member, and the cooling step is performed after the porous body and the resin member in the transport direction. A method for producing a composite porous body, wherein the cooling temperature is gradually lowered from the side toward the front side. In the manufacturing method of the composite porous body according to claim 3,
After the preheating step in which the porous body and the resin member are heated at a temperature equal to or lower than the heating temperature in the adhesion step and gradually heated from the rear side to the front side in the transport direction, the adhesion step The manufacturing method of the composite porous body characterized by passing through. In the manufacturing method of the composite porous body according to any one of claims 1 to 4,
A punching step of punching a sheet-like resin member to form the hole;
A method of manufacturing a composite porous body, wherein the adhesion step is performed after the loading step of loading the porous body into the pores in this order. In the manufacturing method of the composite porous body according to claim 5,
The resin member is elongated, and while being transported in the longitudinal direction, the punching step, the loading step, the adhesion step, and the cooling step are performed in this order, and then the outer peripheral edge portion of the resin member is A method for producing a composite porous body comprising a cutting step of cutting at least a part of the composite porous body to form the composite porous body.

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