Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
  • B01J37/02—Impregnation, coating or precipitation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B28—WORKING CEMENT, CLAY, OR STONE
  • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
  • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
  • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers

Definitions

• the present invention relates to a structure manufacturing apparatus and a structure manufacturing method, and in particular to a structure manufacturing apparatus and a structure manufacturing method that supply a slurry containing a functional material to a substrate.
• the porous substrate includes a porous tubular portion and a porous partition portion.
• the porous substrate includes a large number of cells separated by the partition portions.
• the functional layer can be produced by supplying a slurry containing a functional material into the cells, and drying and firing the slurry layer formed in the cells.
• An example of the functional layer is a catalyst layer having a catalytic function.
• a structure in which the functional layer is a catalyst layer can be used in a catalytic device for purifying exhaust gas.
• the slurry is supplied to one end face of the porous substrate.
• the slurry is sucked from the other end face of the porous substrate.
• a slurry layer is formed from one side of the porous substrate to the other side.
• the cylindrical portion located at the outermost part of the porous substrate is also porous, when a slurry layer is formed by the method described above, gas around the porous substrate can pass through the porous cylindrical portion and flow into the interior of the porous substrate.
• the flow of gas from the cylindrical portion reduces the suction force of the slurry in the outer peripheral portion of the porous substrate compared to the central portion away from the cylindrical portion.
• the axial length of the slurry layer formed in the outer peripheral portion of the porous substrate is shorter than the axial length of the slurry layer formed in the central portion of the porous substrate.
• the structure cannot stably perform the expected function.
• the present invention was made in consideration of the above points, and aims to reduce the difference in length of the slurry layer formed in the peripheral and central parts of the porous substrate when slurry is sucked into the porous substrate.
• the present invention relates to the following [1] to [9].
• An apparatus for manufacturing a structure including a porous substrate having an end surface on one side in an axial direction and an end surface on the other side in the axial direction, and a functional layer held inside the porous substrate, A plurality of sealing portions that contact an outer peripheral side surface located between the one end surface and the other end surface of the porous substrate and seal the outer peripheral side surface; A slurry supply unit that supplies a slurry containing a functional material that forms the functional layer to the one end surface of the porous substrate; A slurry suction unit that sucks the slurry supplied to the porous substrate by the slurry supply unit from the other end surface of the porous substrate whose outer peripheral side surface is sealed by the plurality of sealing portions, Each of the plurality of sealing portions is disposed offset from one another in the axial direction, Each of the plurality of sealing portions has a contact area that contacts the outer peripheral side surface, A structure manufacturing apparatus, wherein the sum of the lengths of the contact regions of each of the multiple sealing portions along the axial direction is 50% or
• the plurality of sealing portions include a first sealing portion and a second sealing portion that contacts the outer peripheral side surface after the first sealing portion contacts the outer peripheral side surface, The structure manufacturing apparatus according to [1], wherein the length of the contact area of the second sealing portion is longer than the length of the contact area of the first sealing portion.
• the plurality of sealing portions include a first sealing portion that contacts the outer peripheral side surface, and a plurality of second sealing portions that contact the outer peripheral side surface after the first sealing portion contacts the outer peripheral side surface, The structure manufacturing apparatus according to [1] or [2], wherein the sum of the lengths of the contact areas of the second sealing portions is longer than the length of the contact areas of the first sealing portions.
• the porous substrate further includes a holding portion that holds two or more of the plurality of plugs and is movable in the axial direction relative to the porous substrate,
• the structure manufacturing apparatus according to any one of [1] to [3], further comprising a sealing unit including the holding portion and the sealing portion held by the holding portion.
• the plurality of sealing portions further include an outer unit sealing portion that contacts the outer peripheral side surface on the other side of the sealing unit.
• the sealing portion included in the sealing unit contacts the outer peripheral side surface after the unit outer sealing portion contacts the outer peripheral side surface.
• a method for producing a structure including a porous substrate having an end face on one side in an axial direction and an end face on the other side in the axial direction, and a functional layer held inside the porous substrate, A sealing step of sealing the outer peripheral side surface by contacting a plurality of plugs with the outer peripheral side surface located between the one end surface and the other end surface of the porous substrate; A slurry supplying step of supplying a slurry containing a functional material that forms the functional layer to the one end surface of the porous substrate; A slurry suction process of suctioning the slurry from the other end surface of the porous substrate having the outer peripheral side surface sealed by the plurality of sealing portions, In the sealing step, each of the plurality of sealing portions contacts the outer peripheral side surface while being shifted from each other in the axial direction, A method for manufacturing a structure, wherein the sum of the lengths along the axial direction of the contact areas where each of the multiple sealing portions is in contact with the outer peripheral side surface is 50% or more and 100% or less
• FIG. 1 is a diagram for explaining an embodiment, and is a side view showing an example of a structure.
• FIG. 2 is a cross-sectional view taken along line AA of FIG.
• FIG. 3 is an enlarged cross-sectional view of a portion R in FIG.
• FIG. 4 is a cross-sectional view taken along line BB of FIG.
• FIG. 5 is a diagram for explaining one embodiment, and is a block diagram showing the overall configuration of a structure manufacturing apparatus.
• FIG. 6 is a front view showing an example of a transport unit included in the structure manufacturing apparatus.
• FIG. 7 is a front view showing an example of a slurry application section included in the structure manufacturing apparatus.
• FIG. 8 is a front view showing the slurry application section of FIG. 7 in another state.
• FIG. 9 is a front view showing the slurry application section of FIG. 7 in yet another state.
• FIG. 10 is a front view showing the slurry application section of FIG. 7 in yet another state.
• FIG. 11 is a front view showing the slurry application section of FIG. 7 in still another state.
• FIG. 12 is a front view showing the slurry application section of FIG. 7 in still another state.
• FIG. 13 is a front view showing the slurry application section of FIG. 7 in still another state.
• FIG. 14 is a front view showing the slurry application section of FIG. 7 in still another state.
• FIG. 15 is a flow chart showing an example of a method for manufacturing a structure.
• FIG. 16 is a flow chart for explaining the sealing step in the method for manufacturing the structure shown in FIG. FIG.
• FIG. 17 is a cross-sectional view corresponding to FIG. 4, showing the porous substrate in the slurry suction step in the structure manufacturing method of FIG.
• FIG. 18 corresponds to FIG. 12 and shows a modified example of the structure manufacturing apparatus.
• FIG. 19 corresponds to FIG. 12 and shows another modified example of the structure manufacturing apparatus.
• FIG. 20 corresponds to FIG. 12 and shows still another modified example of the structure manufacturing apparatus.
• FIG. 21 corresponds to FIG. 12 and shows still another modified example of the structure manufacturing apparatus.
• FIG. 22 corresponds to FIG. 12 and shows still another modified example of the structure manufacturing apparatus.
• FIGS. 1 to 22 are diagrams for explaining one embodiment.
• FIGS. 1 to 4 are diagrams showing a porous substrate.
• FIGS. 5 to 17 are diagrams for explaining a specific example of a structure manufacturing apparatus and structure manufacturing method.
• porous substrate 20 and the structure 10 will be described with reference to the specific examples shown in Figures 1 to 4.
• the porous substrate 20 has a porous structure that allows gas such as air to pass through.
• the porous substrate 20 can hold a functional layer 15 inside.
• the porous substrate 20, together with the functional layer 15, constitutes the structure 10. That is, the structure 10 includes the porous substrate 20 and the functional layer 15 held in the porous substrate 20.
• the functional layer 15 is formed by a slurry 16, which will be described later.
• the fluid moving inside the porous substrate 20, which has a porous structure, is processed due to the function of the functional layer 15.
• the porous substrate 20 includes cells 29 as internal spaces.
• the functional layer 15 may be provided within the cells 29. Each cell 29 extends in the axial direction D1.
• the porous substrate 20 includes one end face 21A and the other end face 21B.
• the one end face 21A is an end face located on one side in the axial direction D1.
• the other end face 21B is an end face located on the other side in the axial direction D1.
• the porous substrate 20 includes an outer peripheral side surface 22 located between the one end face 21A and the other end face 21B.
• the cells 29 may be closed at either one of the end faces 21A and the other end face 21B.
• the cells 29 include a first cell 29A and a second cell 29B.
• the first cell 29A is open at the one end face 21A and closed at the other end face 21B.
• the second cell 29B is open at the other end face 21B and closed at the one end face 21A.
• the first cell 29A and the second cell 29B may be arranged adjacent to each other.
• the porous substrate 20 shown in FIG. 4 is also called a wall-flow type substrate.
• the cells 29 may be open at both the one end surface 21A and the other end surface 21B.
• the cells 29 may form holes that penetrate the porous substrate 20.
• This porous substrate 20 is also called a flow-through substrate.
• the axial direction D1 is indicated by an arrow.
• the tip side of the arrow indicating the axial direction D1 is the other side in the axial direction D1.
• the other side in the axial direction D1 is the opposite side from the one side.
• the arrow indicating the axial direction D1 points from one side to the other side.
• the porous substrate 20 may include a tubular portion 26 and a partition portion 27.
• the tubular portion 26 and the partition portion 27 are made of a porous material and have a porous structure.
• the tubular portion 26 may be cylindrical as in the illustrated example, or may be an elliptical or rectangular tube.
• the partition portion 27 is held inside the tubular portion 26.
• the partition portion 27 defines a number of cells 29. Cells 29 are also defined between the partition portion 27 and the tubular portion 26.
• the partition portion 27 separates adjacent cells 29.
• the material used for the cylindrical portion 26 and the partition wall portion 27 is not particularly limited.
• the material used for the cylindrical portion 26 and the partition wall portion 27 may be, for example, a material commonly used in the field of exhaust gas purification catalysts. It is preferable that the material used for the cylindrical portion 26 and the partition wall portion 27 can stably maintain the shape of the porous substrate 20 even when exposed to high-temperature exhaust gas of, for example, 400°C or more.
• the material used for the cylindrical portion 26 and the partition wall portion 27 may be ceramics.
• the cylindrical portion 26 and the partition wall portion 27 may be formed by sintering ceramic particles.
• Ceramics include alumina, zirconia, mullite, zircon, cordierite, aluminum titanate, silicon carbide, silicon nitride, boron nitride, etc.
• the cylindrical portion 26 and the partition wall portion 27 may be molded integrally.
• the cylindrical portion 26 and the partition wall portion 27 may be connected without a joint.
• the cells 29 are arranged in a square array.
• the cells 29 are arranged in two orthogonal array directions.
• the two array directions may be orthogonal to the axial direction D1.
• the array of the cells 29 is not limited to a square array.
• the array of the cells 29 may be, for example, a honeycomb array. In a honeycomb array, the cells 29 are arranged in each of three array directions inclined at 60° to each other.
• the length L20 (see FIG. 1) of the porous substrate 20 in the axial direction D1 may be 40 mm or more and 300 mm or less.
• the maximum width W20 (see FIG. 2) of the porous substrate 20 in the direction perpendicular to the axial direction D1 may be 30 mm or more and 250 mm or less.
• the maximum width W20 of the porous substrate 20 corresponds to the diameter of one end face 21A and also corresponds to the diameter of the other end face 21B.
• the thickness of the tubular portion 26 and the thickness of the partition portion 27 can be adjusted as appropriate.
• the thickness of the tubular portion 26 may be 100 ⁇ m or more and 3000 ⁇ m or less.
• the thickness of the partition portion 27 may be 20 ⁇ m or more and 1500 ⁇ m or less.
• the number of cells 29 per square inch of the porous substrate 20 can be appropriately adjusted.
• the number of cells 29 per square inch may be 100 cells/inch2 or more and 1000 cells/ inch2 or less.
• the number of cells 29 per square inch of the porous substrate 20 is the number of cells 29 per square inch on a cut surface obtained by cutting the porous substrate 20 along a plane perpendicular to the axial direction D1.
• the functional layer 15 is held by the porous substrate 20 having the above configuration.
• the functional layer 15 can exert a predetermined function.
• the functional layer 15 can have various functions.
• the functional layer 15 can be produced using various materials having functions expected of the functional layer 15. As shown by the two-dot chain line in FIG. 4, the functional layer 15 can be held by the wall portion that divides the cell 29.
• the functional layer 15 is formed from a slurry layer 16L (see FIG. 17) in the cell 29 of the porous substrate 20.
• a coating film (slurry layer) 16L of the slurry 16 is formed on the wall portion that divides the cell 29.
• This coating film (slurry layer) 16L is post-treated as necessary. Examples of post-treatment include drying and firing.
• the functional layer 15 is obtained from the slurry layer 16L.
• the structure 10 may be a catalytic device for purifying exhaust gas.
• the catalytic device for purifying exhaust gas may be a particulate filter for a gasoline engine (GPF: Gasoline Particulate Filter).
• the catalytic device for purifying exhaust gas may be a particulate filter for a diesel engine (DPF: Diesel Particulate Filter).
• the functional layer 15 may be a collection layer.
• the functional layer 15 as a collection layer may collect particulate matter (PM) in the exhaust gas.
• the functional layer 15 may also be a catalyst layer.
• the functional layer 15 as a catalyst layer may contain a catalytically active component.
• the thickness of the functional layer 15 as a collection layer or catalyst layer may be 10 ⁇ m or more and 400 ⁇ m or less.
• the structure manufacturing apparatus 30 manufactures a structure 10 including a porous substrate 20 material and a functional layer 15 held inside the porous substrate 20.
• the structure manufacturing apparatus 30 includes a control unit 31 and a substrate processing unit 32.
• the substrate processing unit 32 processes the porous substrate 20.
• the control unit 31 controls the substrate processing unit 32.
• the operation of the substrate processing unit 32 is controlled by the control unit 31.
• the control unit 31 may include a processing unit such as a processor (CPU: Central Processing Unit) and a storage unit such as a RAM.
• the storage unit may record a computer program that defines the processing procedure of the structure manufacturing apparatus 30.
• the processing unit may control the operation of the substrate processing unit 32 by executing a program stored in the storage unit, or by following instructions input via an interface or communication means.
• the substrate processing section 32 includes a transport section 35, a slurry application section 40, a drying section 70, and a firing section 80.
• the transport section 35 transports the porous substrate 20 within the structure manufacturing apparatus 30.
• the transport section 35 is responsible for transporting the porous substrate 20 to and from each processing section included in the substrate processing section 32 depending on the treatment process.
• the slurry application section 40 supplies slurry to the porous substrate 20 and forms a slurry layer 16L inside the porous substrate 20.
• the drying section 70 dries the slurry layer 16L.
• the firing section 80 fires the slurry layer 16L.
• the structure manufacturing apparatus 30 includes a slurry application section 40, which includes a slurry supply section 42, a slurry suction section 44, and multiple sealing sections.
• the slurry supply section 42 supplies the slurry 16 to one end surface 21A of the porous substrate 20.
• the slurry suction section 44 sucks the slurry 16 from the other end surface 21B of the porous substrate 20.
• the multiple sealing sections contact the outer peripheral side surface 22 to seal the outer peripheral side surface 22.
• the conveying section 35 and the slurry application section 40 included in the substrate processing section 32 will be described below in order.
• the porous substrate 20 and the structure 10 may be held by the conveying machine 37 by being sandwiched between a pair of gripping arms 38.
• the conveying machine 37 may be movable while the porous substrate 20 is gripped by the gripping arm 38.
• the gripping arms 38 grip the outer peripheral side surface 22 of the porous substrate 20.
• the configuration of the conveying unit 35 is not particularly limited.
• the conveying unit 35 may include other conveying means such as a belt core in addition to or instead of the conveying machine 37.
• the slurry application unit 40 supplies the slurry 16 to the porous substrate 20.
• the slurry 16 supplied to the porous substrate 20 forms a slurry layer 16L (see FIG. 17) in the cells 29.
• the slurry layer 16L is subjected to a drying process and a firing process to form the functional layer 15 (indicated by a two-dot chain line in FIG. 4).
• the slurry 16 includes a functional material that forms the functional layer 15.
• the one end face 21A is an end face on one side of the porous substrate 20 in the axial direction D1.
• the first cells 29A are open in the one end face 21A.
• the one end face 21A is defined by one end of the partition wall portion 27 in the axial direction.
• the other end face 21B is an end face on the other side of the porous substrate 20 in the axial direction D1.
• the second cells 29B are open in the other end face 21B.
• the other end face 21B is defined by the other end of the partition wall portion 27 in the axial direction.
• the slurry supply unit 42 includes a discharge nozzle 43.
• the slurry 16 is discharged from the discharge port 43a of the discharge nozzle 43.
• the position of the discharge port 43a may be movable relative to the porous substrate 20 to be treated in the axial direction D1.
• the position of the discharge port 43a may be movable relative to the porous substrate 20 to be treated in a direction perpendicular to the axial direction D1.
• the slurry suction section 44 includes a support table 45 and an aspirator 46.
• the support table 45 supports the porous substrate 20 to be treated from below in the vertical direction in the slurry application section 40.
• the transport section 35 transports the porous substrate 20 to the support table 45.
• the transport section 35 transports the porous substrate 20, on which the slurry layer 16L has been formed in the slurry application section 40, from the support table 45.
• the support table 45 includes a suction port 45a that opens toward the upper side in the vertical direction.
• the support table 45 supports the porous substrate 20 so that the other end surface 21B of the porous substrate 20 faces the suction port 45a.
• the suction port 45a is connected to the aspirator 46.
• the aspirator 46 is not particularly limited and may be various suction devices.
• the aspirator 46 may be a vacuum pump.
• the slurry application section 40 of the structure manufacturing apparatus 30 further includes a plurality of sealing sections.
• the plurality of sealing sections contact the outer peripheral side surface 22 to seal the outer peripheral side surface 22.
• Seal the outer peripheral side surface means covering at least a portion of the outer peripheral side surface 22 so as to reduce the passage of gas through the outer peripheral side surface 22, and does not simply mean completely preventing gas from passing through that portion of the outer peripheral side surface.
• each of the multiple sealing parts is positioned offset from each other in the axial direction D1.
• Each of the multiple sealing parts has a contact area that contacts the outer peripheral side surface 22.
• the sum of the axial lengths of the contact areas of each of the multiple sealing parts is 50% to 100% of the axial length of the outer peripheral side surface. Therefore, the outer peripheral side surface 22 can be sealed over a wide area. This makes it possible to reduce the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 when the slurry 16 is sucked into the porous substrate 20.
• the multiple sealing portions may include a first sealing portion 51 and a second sealing portion 52.
• the second sealing portion 52 contacts the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22.
• the second sealing portion 52 may contact the outer peripheral side surface 22 on one side or the other side in the axial direction D1 of the first sealing portion 51.
• the second sealing portion 52 may be located between the two first sealing portions 51 in the axial direction D1.
• the first sealing portion 51 and the second sealing portion 52 contact and seal the outer peripheral side surface 22 at different times, so that the porous substrate 20 can be sealed and held in an appropriate position, and the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 can be effectively reduced.
• the multiple sealing portions of the slurry application section 40 include one side sealing portion 61, a central sealing portion 62, an other side sealing portion 63, and a base end sealing portion 68.
• the central sealing portion 62 in the specific example shown can constitute the second sealing portion 52 in one aspect of this embodiment.
• One or more of the one side sealing portion 61, the other side sealing portion 63, and the base end sealing portion 68 in the specific example shown can constitute the first sealing portion 51 in one aspect of this embodiment.
• Each of the multiple sealing portions 61, 62, 63, 68 is positioned offset from one another in the axial direction D1. As shown in FIG. 12, the one-side sealing portion 61, the central sealing portion 62, the other-side sealing portion 63, and the base-end sealing portion 68 are positioned in this order from one side to the other in the axial direction D1 when facing the outer peripheral side surface 22.
• the one-side sealing portion 61 contacts the outer peripheral side surface 22 on one side in the axial direction D1 relative to the central sealing portion 62.
• the central sealing portion 62 contacts the outer peripheral side surface 22 on the other side in the axial direction D1 relative to the one-side sealing portion 61.
• This one-side sealing portion 61 can constitute the first sealing portion 51 in one aspect of this embodiment.
• the other side sealing portion 63 contacts the outer peripheral side surface 22 on the other side in the axial direction D1 of the central sealing portion 62.
• the other side sealing portion 63 contacts the outer peripheral side surface 22 on the opposite side of the central sealing portion 62 from the one side sealing portion 61 in the axial direction D1.
• This other side sealing portion 63 can constitute the first sealing portion 51 in one aspect of this embodiment.
• the base end sealing portion 68 contacts the outer peripheral side surface 22 on the other side in the axial direction D1 than the central sealing portion 62.
• the base end sealing portion 68 contacts the outer peripheral side surface 22 on the other side in the axial direction D1 than the other side sealing portion 63.
• This base end sealing portion 68 can constitute the first sealing portion 51 in one aspect of this embodiment.
• This base end sealing portion 68 can constitute the unit outer sealing portion in one aspect of this embodiment described later.
• the contact areas A61, A62, A63, A68 of each sealing portion 61, 62, 63, 68 may extend around the entire circumference along the circumferential direction D2, i.e., may extend in an annular shape.
• the contact areas A61, A62, A63, A68 of each sealing portion 61, 62, 63, 68 may be areas of the outer peripheral side surface 22 that extend around the entire circumference along the circumferential direction.
• the circumferential direction D2 is the direction along the outer peripheral side surface 22 when observed from the axial direction D1, as shown in FIG. 2.
• Each sealing portion 61, 62, 63, 68 may include a bag 69.
• the bag 69 may be expandable.
• the bag 69 may be contractable.
• the bag 69 may be expanded by being supplied with fluid from a fluid source.
• the expanded bag 69 may be contracted by discharging fluid from the expanded bag 69. As shown in FIG. 14, the expanded bag 69 may contact the outer peripheral side surface 22. As shown in FIGS. 8 and 10, the contracted bag 69 may separate from the outer peripheral side surface 22.
• the bag body 69 may be an elastic body having an internal space.
• the material of the bag body 69 may be rubber or resin.
• the rubber or resin restricts the passage of gas such as air.
• the bag body 69 using rubber or resin can seal the outer peripheral side surface 22 by contacting the outer peripheral side surface 22.
• the fluid supplied to the internal space of the bag body 69 may be a gas such as air.
• the bag body 69 may extend around the entire circumference in the circumferential direction, i.e., the bag body 69 may extend in an annular shape.
• the annular bag body 69 may contact an area of the outer peripheral side surface 22 that extends around the entire circumference in the circumferential direction.
• the bag body 69 functions as a balloon-type chuck.
• the slurry application section 40 further includes a holding section 65.
• the holding section 65 holds the one-side sealing section 61, the central sealing section 62, and the other-side sealing section 63.
• the one-side sealing section 61, the central sealing section 62, and the other-side sealing section 63 may be attached to the holding section 65.
• the bag bodies 69 constituting each of the one-side sealing section 61, the central sealing section 62, and the other-side sealing section 63 may be attached to the holding section 65.
• the holding section 65 may extend annularly around the entire circumference in the circumferential direction together with the bag bodies 69.
• the base end sealing part 68 does not have to be held by the holding part 65.
• the base end sealing part 68 can constitute an external unit sealing part, which will be described later.
• the holding portion 65 may be movable relative to the porous substrate 20 and the base end sealing portion 68 in the axial direction D1.
• the holding portion 65 may move relative to the porous substrate 20 while holding the one side sealing portion 61, the central sealing portion 62, and the other side sealing portion 63.
• the one side sealing portion 61, the central sealing portion 62, and the other side sealing portion 63 may move synchronously.
• the one side sealing portion 61, the central sealing portion 62, and the other side sealing portion 63 can be quickly positioned relative to the porous substrate 20.
• the holding portion 65 and the sealing portions 61, 62, and 63 held by the holding portion 65 constitute the sealing unit 60.
• the sealing unit 60 is movable relative to the base end sealing portion 68.
• the base end sealing portion 68 is not included in the sealing unit 60, and can operate independently of the sealing unit 60 as an external unit sealing portion.
• the slurry application section 40 may include a driver 64.
• the driver 64 is connected to the holding section 65 of the sealing unit 60 and drives the holding section 65. That is, the holding section 65 moves when driven by the driver 64.
• the driver 64 may include a power generation source such as a cylinder, a ball screw, a multi-joint robot, and a motor.
• the driver 64 is a linear motion mechanism.
• the driver 64 moves the holding section 65 in the axial direction D1.
• the discharge nozzle 43 of the slurry supply section 42 is connected to the holding section 65.
• the discharge nozzle 43 can move in the axial direction D1 together with the holding section 65.
• the one-side sealing portion 61 may contact one end 23A of the outer peripheral side surface 22.
• the one end 23A is an end portion on one side of the outer peripheral side surface 22 in the axial direction D1.
• the one end 23A is connected to the one end face 21A.
• the one end 23A is an annular region extending around the entire circumference in the circumferential direction.
• the one-side sealing portion 61 seals the one end 23A.
• the one-side sealing portion 61 holds the one end 23A.
• the base end sealing portion 68 is held by the support base 45 of the slurry suction portion 44.
• the base end sealing portion 68 is positioned around the suction port 45a.
• the bag body 69 of the base end sealing portion 68 extends in a ring shape around the suction port 45a.
• two of the sealing portions 61, 62, and 63 included in the sealing unit 60 that are adjacent in the axial direction D1 may contact each other in the axial direction D1 when in contact with the outer peripheral side surface 22.
• the one-side sealing portion 61 and the central sealing portion 62 may contact each other in the axial direction D1 when in contact with the outer peripheral side surface 22.
• the central sealing portion 62 and the other-side sealing portion 63 may contact each other in the axial direction D1 when in contact with the outer peripheral side surface 22. According to this example, it is possible to prevent the outer peripheral side surface 22 from being insufficiently sealed in the area between the adjacent sealing portions.
• the base end sealing portion 68 may contact the other end 23B of the outer peripheral side surface 22.
• the other end 23B is the other end of the outer peripheral side surface 22 in the axial direction D1.
• the other end 23B connects to the other end surface 21B.
• the other end 23B is an annular region extending around the entire circumference in the circumferential direction.
• the base end sealing portion 68 seals the other end 23B.
• the base end sealing portion 68 holds the other end 23B.
• the holding portion 65 may include a holding tube 66 and a sealing member 67.
• the holding tube 66 may be cylindrical.
• the holding tube 66 may include a tube holding body 66a and a tube housing 66b.
• the tube holding body 66a holds the one-side sealing portion 61, the central sealing portion 62, and the other-side sealing portion 63.
• the bag bodies 69 included in each of the one-side sealing portion 61, the central sealing portion 62, and the other-side sealing portion 63 may be attached to the tube holding body 66a.
• the tube holding body 66a has a size that allows the porous substrate 20 to be housed therein without contact.
• the slurry supplying portion 42 may be attached to the tube housing 66b of the holding tube 66.
• the tube container 66b extends from the tube holder 66a to one side in the axial direction D1.
• the tube container 66b may be cylindrical and capable of containing the slurry 16 supplied from the slurry supply section 42.
• the tube container 66b may be molded integrally with the tube holder 66a.
• the tube container 66b may be connected to the tube holder 66a without any seams.
• the sealing member 67 is located on the end face of the retaining tube 66 on the other side in the axial direction D1.
• the sealing member 67 is provided on the face of the retaining tube 66 facing the other side in the axial direction D1.
• the sealing member 67 of the retaining portion 65 may contact the base end sealing portion 68 to seal between the sealing unit 60 and the base end sealing portion 68.
• the sealing member 67 may be formed of an elastic material such as rubber or resin.
• the sealing member 67 may have a shape that is easily elastically deformed, such as a tube shape.
• the sealing member 67 may extend in an annular shape around the entire circumference in the circumferential direction.
• the length of the central sealing portion 62 along the axial direction D1 is longer than the lengths of the other sealing portions 61, 63, 68 included in the slurry application portion 40 along the axial direction D1.
• the length L62 of the contact area A62 in contact with the outer peripheral side surface 22 of the central sealing portion 62 along the axial direction D1 is longer than the lengths L61, L63, L68 of the contact areas A61, A63, A68 in contact with the outer peripheral side surfaces 22 of the other sealing portions 61, 63, 68 included in the slurry application portion 40 along the axial direction D1.
• the length L62 of the contact area A62 of the central sealing portion 62 along the axial direction D1 is longer than the total length of the length L61 of the contact area A61 of the one-side sealing portion 61 along the axial direction D1 and the length L63 of the contact area A63 of the other-side sealing portion 63 along the axial direction D1.
• the sealing portion can seal and hold the porous substrate 20 in a more appropriate position while sealing and holding the outer peripheral side surface 22 over a wide area.
• the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 can be reduced.
• the manufacturing method produces a structure 10 including a porous substrate 20 material and a functional layer 15 held inside the porous substrate 20.
• the manufacturing method includes a sealing step, a slurry supply step, and a slurry suction step.
• the manufacturing method further includes a sealing release step, a drying step, and a firing step. That is, in the example shown in FIG. 15, the manufacturing method includes a sealing step S1, a slurry supply step S2, a slurry suction step S3, a sealing release step S4, a drying step S5, and a firing step S6, in that order.
• a sealing step S1 a slurry supply step S2, a slurry suction step S3, a sealing release step S4, a drying step S5, and a firing step S6, in that order.
• Each step will be described below.
• the operation of the structure manufacturing apparatus 30 in each of the following steps is controlled by a control signal from the control unit 31.
• the porous substrate 20 to be treated is brought onto the mounting table 36 of the transport section 35.
• the porous substrate 20 placed on the mounting table 36 is gripped by the gripping arm 38 of the transport machine 37, as shown in FIG. 6.
• the transport machine 37 moves while holding the porous substrate 20 using the gripping arm 38.
• the transport machine 37 brings the porous substrate 20 into the slurry application section 40, as shown in FIG. 7.
• the porous substrate 20 is held by the conveyor 37 above the support table 45 of the slurry suction section 44 in the vertical direction.
• the axial direction D1 of the porous substrate 20 is maintained parallel to the vertical direction, and the other end face 21B faces downward in the vertical direction.
• the conveyor 37 moves to the other side in the axial direction D1.
• the porous substrate 20 is placed on the support table 45 of the slurry suction section 44.
• the bag body 69 of the base end sealing section 68 faces a portion of the outer peripheral side surface 22 in the axial direction D1.
• the bag body 69 of the base end sealing section 68 faces an annular area that extends around the entire circumference of the outer peripheral side surface 22 in the circumferential direction.
• the porous substrate 20 is then brought into the slurry application section 40.
• the sealing step S1 is carried out in the slurry application section 40.
• the slurry application section 40 also carries out the slurry supply step S2, the slurry suction step S3, and the sealing release step S4.
• the sealing step S1 the outer peripheral side surface 22 of the porous substrate 20 is sealed.
• the outer peripheral side surface 22 is sealed by contacting the sealing portion with the outer peripheral side surface 22.
• the sealing portion contacts the outer peripheral side surface 22, thereby holding the porous substrate 20 in place.
• the sealing process S1 may include a base end sealing process S11, a moving process S12, a one side sealing process S13, an other side sealing process S14, and a center sealing process S15.
• a base end sealing process S11 a moving process S12
• a one side sealing process S13 a one side sealing process S13
• an other side sealing process S14 a center sealing process S15.
• the base-side sealing step S11 is performed as shown in FIG. 9.
• the base-side sealing portion 68 comes into contact with the porous substrate 20.
• a fluid e.g., air
• the bag 69 expands.
• the expanded bag 69 comes into contact with the outer peripheral side surface 22 in an annular contact area A68 that extends around the entire circumference in the circumferential direction.
• the outer peripheral side surface 22 is sealed in the annular area where the bag 69 comes into contact, and the passage of gas through that area is suppressed.
• the base-side sealing portion 68 is attached to the support table 45.
• the bag 69 of the base-side sealing portion 68 comes into contact with the porous substrate 20, and the porous substrate 20 is held by the base-side sealing portion 68. In this manner, the base-side sealing step S11 using the base-side sealing portion 68 is completed.
• a moving step S12 is performed.
• the holding part 65 holding the sealing parts 61-63 moves with respect to the porous substrate 20 from one side in the axial direction D1 shown in FIG. 9 to the other side in the axial direction D1 shown in FIG. 10.
• the movement of the holding part 65 can be driven by a driving machine 64.
• the holding part 65 and the sealing parts 61-63 included in the sealing unit 60 extend annularly along the circumferential direction.
• the porous substrate 20 is inserted into the sealing parts 61-63 extending annularly.
• the holding portion 65 moves until it comes into contact with the base end sealing portion 68.
• the holding portion 65 moves to the other side in the axial direction D1 until the sealing member 67 of the holding portion 65 comes into contact with the annular portion 68h (see FIG. 10) that holds the bag body 69 of the base end sealing portion 68.
• the sealing member 67 comes into contact with the base end sealing portion 68 and deforms so as to be crushed.
• the sealing member 67 seals between the base end sealing portion 68 and the sealing unit 60.
• the sealing parts 61-63 held by the holding part 65 are positioned at a position facing the outer peripheral side surface 22 in a direction perpendicular to the axial direction D1.
• the bag body 69 of each sealing part 61-63 held by the holding part 65 faces a partial area of the outer peripheral side surface 22 in the axial direction D1.
• the bag body 69 of each sealing part 61-63 held by the holding part 65 faces an annular area that extends around the entire circumference of the outer peripheral side surface 22 in the circumferential direction.
• the base end sealing step S11 is performed before the moving step S12. Therefore, during the moving step S12, the porous substrate 20 is held by the base end sealing portion 68. Therefore, even if the sealing unit 60 comes into contact with the porous substrate 20 during the moving step S12, the position of the porous substrate 20 can be stably maintained by the base end sealing portion 68.
• the moving step S12 may be performed before the base end sealing step S11.
• the moving step S12 may be performed in parallel with the base end sealing step S11.
• the one-side sealing step S13 is performed.
• the one-side sealing portion 61 comes into contact with the porous substrate 20.
• a fluid for example, air
• the expanded bag body 69 comes into contact with the outer peripheral side surface 22 in an annular contact area A61 that extends around the entire circumference in the circumferential direction.
• the outer peripheral side surface 22 is sealed in the annular area where the bag body 69 of the one-side sealing portion 61 comes into contact, and the passage of gas in that area is suppressed.
• the one-side sealing portion 61 is attached to the holding portion 65.
• the bag body 69 of the one-side sealing portion 61 comes into contact with the porous substrate 20, and the porous substrate 20 is held by the one-side sealing portion 61. In this manner, the one-side sealing step S13 using the one-side sealing portion 61 is completed.
• the other-side sealing step S14 is performed.
• the other-side sealing portion 63 comes into contact with the porous substrate 20.
• a fluid air, for example
• the expanded bag body 69 comes into contact with the outer peripheral side surface 22 in an annular contact area A63 that extends around the entire circumference in the circumferential direction.
• the outer peripheral side surface 22 is sealed in the annular area where the bag body 69 of the other-side sealing portion 63 comes into contact, and the passage of gas in that area is suppressed.
• the other-side sealing portion 63 is attached to the holding portion 65.
• the bag body 69 of the other-side sealing portion 63 comes into contact with the porous substrate 20, and the porous substrate 20 is held by the other-side sealing portion 63. In this way, the other-side sealing step S14 using the other-side sealing portion 63 is completed.
• the other-side sealing step S14 may be performed before the one-side sealing step S13.
• the other-side sealing step S14 may be performed in parallel with the one-side sealing step S13.
• the base-end sealing step S11 may be performed after the one-side sealing step S13, or in parallel with the one-side sealing step S13.
• the base-end sealing step S11 may be performed after the other-side sealing step S14, or in parallel with the other-side sealing step S14.
• the base-end sealing step S11 may be performed after both the one-side sealing step S13 and the other-side sealing step S14, or in parallel with both the one-side sealing step S13 and the other-side sealing step S14.
• the central sealing step S15 is performed.
• the central sealing step S15 the central sealing portion 62 comes into contact with the porous substrate 20.
• a fluid air, for example
• the expanded bag 69 comes into contact with the outer peripheral side surface 22 in an annular contact area A62 that extends around the entire circumference in the circumferential direction.
• the outer peripheral side surface 22 is sealed in the annular area where the bag 69 of the central sealing portion 62 comes into contact, and the passage of gas through that area is suppressed.
• the central sealing portion 62 is attached to the holding portion 65.
• the bag 69 of the central sealing portion 62 comes into contact with the porous substrate 20, and the porous substrate 20 is held by the central sealing portion 62. In this manner, the central sealing step S15 using the central sealing portion 62 is completed.
• the central sealing step S15 may be performed before one or more of the base end sealing step S11, the one side sealing step S13, and the other side sealing step S14. Also, the central sealing step S15 may be performed in parallel with one or more of the base end sealing step S11, the one side sealing step S13, and the other side sealing step S14.
• each of the multiple sealing parts 61, 62, 63, 68 has a contact area A61, A62, A63, A68 that contacts the outer peripheral side surface 22.
• the sum of the lengths L61, L62, L63, L68 of the contact areas A61, A62, A63, A68 of the sealing parts 61, 62, 63, 68 along the axial direction D1 is 50% or more and 100% or less of the length of the outer peripheral side surface 22 along the axial direction D1.
• the posture of the porous substrate 20 can be stably maintained on the support table 45. Therefore, the subsequent slurry supply step S2 and slurry suction step S3 can be stably performed.
• the sum of the lengths L61, L62, L63, and L68 of the contact areas A61, A62, A63, and A68 of each sealing portion 61, 62, 63, and 68 along the axial direction D1 may be 60% or more and 100% or less, 70% or more and 100% or less, 80% or more and 100% or less, or 90% or more and 100% or less, of the length of the outer peripheral side surface 22 along the axial direction D1.
• a sealing unit 60 is formed including one side sealing portion 61, a central sealing portion 62, an other side sealing portion 63, and a holding portion 65.
• the holding portion 65 may be cylindrical and made of resin or metal.
• Such a cylindrical holding portion 65 can prevent gas from flowing into the space between the holding portion 65 and the outer peripheral side surface 22, which is a space partitioned by the sealing portion. That is, the holding portion 65 can prevent gas from flowing into the outer peripheral side surface 22 even if two sealing portions adjacent to each other in the axial direction D1 among the sealing portions included in the sealing unit 60 are separated while in contact with the outer peripheral side surface 22. This allows the subsequent slurry supply process S2 and slurry suction process S3 to be performed stably.
• the holding portion 65 contacts the base end sealing portion 68, sealing the gap between the sealing unit 60 and the base end sealing portion 68.
• the sealing between the sealing unit 60 and the base end sealing portion 68 can suppress the inflow of gas into the outer peripheral side surface 22. This allows the subsequent slurry supply process S2 and slurry suction process S3 to be carried out stably.
• the contact pressure applied from the sealing portion to the outer peripheral side may vary within the contact area. If the contact pressure becomes too uneven, the porous substrate will tilt when one axially long sealing portion contacts the outer peripheral side. Furthermore, the sealing portion may maintain the porous substrate in a tilted position.
• the structure manufacturing apparatus 30 includes a first sealing portion 51 and a second sealing portion 52.
• the second sealing portion 52 contacts the outer peripheral side surface 22 on one side or the other side in the axial direction D1 of the first sealing portion 51.
• the second sealing portion 52 contacts the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22.
• one or more of the one-side sealing portion 61, the other-side sealing portion 63, and the base-end sealing portion 68 may correspond to the first sealing portion 51 in one aspect of this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in one aspect of this embodiment.
• the multiple sealing portions that contact the outer peripheral side surface 22 contact the outer peripheral side surface at different times.
• the second sealing portion 52 contacts the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22.
• An upper limit may be set for the contact lengths L61, L63, and L68 of the first sealing portion 51 (one-side sealing portion 61, other-side sealing portion 63, and base-end sealing portion 68) that contact the outer peripheral side surface 22 before the second sealing portion 52.
• the contact length is the length along the axial direction D1 of the contact area of the target sealing portion that contacts the outer peripheral side surface 22.
• the contact lengths L61, L63, and L68 (mm) of the first sealing portion 51 may be 3 mm or more, 5 mm or more, or 7 mm or more.
• any lower limit value of the contact lengths L61, L63, and L68 (mm) of the first sealing portion 51 can be combined with any upper limit value of the above-mentioned contact lengths L61, L63, and L68 (mm).
• the second sealing portion 52 (central sealing portion 62) also contacts the outer peripheral side surface 22 held by the first sealing portion 51. That is, the second sealing portion 52 contacts the porous substrate 20 held by the other sealing portion.
• a lower limit may be set for the ratio (%) of the contact length L62 along the axial direction D1 of the contact region of the second sealing portion 52 (central sealing portion 62) to the axial length of the exposed portion of the outer peripheral side surface 22 exposed just before the contact of the second sealing portion 52 (central sealing portion 62). By setting this lower limit, it is possible to more effectively enjoy the effect of being able to quickly seal the outer peripheral side surface 22 of the porous substrate 20 held in an appropriate position over a wide area.
• This ratio may be 50% or more, 60% or more, 70% or more, 80% or more, or 90% or more. No upper limit is particularly set for this ratio. This ratio may be 100% or less. This upper limit of the percentage (100%) may be combined with any lower limit of the percentage.
• the one-side sealing portion 61, the other-side sealing portion 63, and the base-end sealing portion 68 are in contact with the outer peripheral side surface 22 before the second sealing portion 52 (central sealing portion 62) comes into contact.
• the length along the axial direction of the exposed portion of the outer peripheral side surface 22 immediately before the second sealing portion 52 (central sealing portion 62) comes into contact is the length L20 of the outer peripheral side surface 22 in the axial direction D1 minus the contact length L61 of the contact area A61 of the one-side sealing portion 61, the contact length L63 of the contact area A63 of the other-side sealing portion 63, and the contact length L68 of the contact area A68 of the base-end sealing portion 68. In the example shown, this percentage is 100%.
• the slurry supplying step S2 is carried out.
• the slurry 16 is supplied to one end surface 21A of the porous substrate 20.
• the porous substrate 20 is held so that the axial direction D1 is along the vertical direction and one side is on the upper side.
• the slurry 16 is supplied from the discharge nozzle 43 of the slurry supplying section 42 to the area surrounded by the holding section 65 of the sealing unit 60.
• the slurry 16 spreads in the area surrounded by the cylindrical container 66b of the holding section 65.
• the one end surface 21A of the porous substrate 20 is blocked with the slurry 16.
• the slurry 16 can flow into the cells 29 that open to the one end surface 21A. This completes the slurry supplying step S2.
• the sealing portions 61, 62, 63, and 68 can hold the porous substrate 20 in an appropriate position and in an appropriate posture. Therefore, the slurry 16 can be appropriately supplied to the one end surface 21A from the discharge port 43a of the discharge nozzle 43.
• the one-side sealing portion 61 holds one end portion 23A of the outer peripheral side surface 22, maintaining the one end surface 21A of the porous substrate 20 in an appropriate position. Therefore, the slurry 16 can be appropriately supplied to the one end surface 21A of the porous substrate 20.
• the slurry supply unit 42 (discharge nozzle 43) is connected to the holding tube 66 of the holding unit 65.
• the slurry supply unit 42 (discharge nozzle 43) moves in synchronization with the holding tube 66 of the holding unit 65.
• the bag body 69 that holds one end 23A of the outer peripheral side surface 22 is attached to the holding tube 66 of the holding unit 65. Therefore, the discharge port 43a of the discharge nozzle 43 is positioned at an appropriate position with respect to one end surface 21A of the porous substrate 20 and the holding unit 65 that defines the supply area of the slurry 16. This allows the slurry 16 to be more appropriately supplied to one end surface 21A of the porous substrate 20.
• the slurry suction process S3 is carried out. As shown in FIG. 14, in the slurry suction process S3, the slurry 16 supplied to one end surface 21A is sucked from the other end surface 21B.
• the slurry suction process S3 may be carried out in parallel with part or all of the slurry supply process S2.
• the other end surface 21B of the porous substrate 20 faces the suction port 45a of the support stand 45.
• An aspirator 46 connected to the suction port 45a sucks in gas (e.g., air) in the cells 29 that open to the other end surface 21B.
• gas e.g., air
• the slurry 16 advances from one side to the other side in the axial direction D1. In this way, a slurry layer 16L is formed in the cells 29 by the slurry 16 that has spread in the cells 29.
• the sealing portions 61, 62, 63, and 68 can hold the porous substrate 20 in an appropriate position. Therefore, the slurry 16 can be appropriately sucked by the slurry suction portion 44.
• the base end sealing portion 68 holds the other end 23B of the outer peripheral side surface 22 in an appropriate position.
• the other end 23B of the outer peripheral side surface 22 is adjacent to the other end surface 21B that faces the suction port 45a of the slurry suction portion 44. Therefore, the inflow of external gas between the slurry suction portion 44 and the other end surface 21B of the porous substrate 20 is suppressed, and the slurry 16 can be efficiently sucked from the other end surface 21B of the porous substrate 20.
• the base end sealing portion 68 is attached to the slurry suction portion 44 (support base 45). Therefore, it is possible to more effectively prevent external gas from flowing between the slurry suction portion 44 and the other end surface 21B of the porous substrate 20, and to more efficiently suction the slurry 16 from the other end surface 21B of the porous substrate 20.
• the partition wall that constitutes the porous substrate has a porous structure, and gas can pass through the partition wall.
• the cylindrical portion that constitutes the outer peripheral side surface of the porous substrate has a porous structure, and gas can pass through the cylindrical portion.
• gas around the porous substrate can pass through the cylindrical portion and flow into the interior of the porous substrate. If the gas around the porous substrate is sucked into the slurry suction portion, the negative pressure in the cells is not sufficiently created, and the slurry cannot be sufficiently sucked.
• Cells that are prone to this defect are those located in the outer peripheral portion near the outer peripheral side surface. In the central portion away from the outer peripheral side surface, this defect is less likely to occur.
• the length along the axial direction of the slurry layer formed in the outer peripheral portion of the porous substrate was shorter than the length along the axial direction of the slurry layer formed in the central portion of the porous substrate.
• an area where the functional layer is not formed may unintentionally occur. If an area where the functional layer 15 is not formed occurs in the outer peripheral portion of the porous substrate, the structure cannot stably perform the expected function.
• the outer peripheral side surface 22 of the porous substrate 20 is sealed by a plurality of sealing parts.
• Each of the plurality of sealing parts is arranged offset from each other in the axial direction D1.
• Each of the plurality of sealing parts has a contact area in contact with the outer peripheral side surface 22.
• the total contact length along the axial direction of each of the contact areas of the plurality of sealing parts is 50% or more and 100% or less of the length along the axial direction D1 of the outer peripheral side surface 22. Therefore, the outer peripheral side surface 22 can be sealed over a wide range.
• the slurry 16 supplied to one end surface 21A can be effectively sucked from the other end surface 21B while effectively suppressing the inflow of gas from the outer peripheral side surface 22.
• the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 can be reduced.
• the sealing portions 61, 62, 63, and 68 seal the entire outer peripheral side surface 22. This makes it possible to prevent gas from flowing into the cells 29 of the porous substrate 20 from the outer peripheral side surface 22. This makes it possible to reduce the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 when the slurry 16 is sucked into the interior of the porous substrate 20.
• the first sealing portion 51 e.g., one or more of the one-side sealing portion 61, the other-side sealing portion 63, and the base-end sealing portion 68
• the second sealing portion 52 e.g., the central sealing portion 62
• the first sealing portion 51 and the second sealing portion 52 can contact the outer peripheral side surface 22 in sequence at different times. Therefore, it is possible to prevent the porous substrate 20 from tilting when the first sealing portion 51 and the second sealing portion 52 contact each other, and to prevent the porous substrate 20 from being held in an inclined position by the first sealing portion 51 and the second sealing portion 52. This allows the slurry 16 supplied to one end surface 21A to be effectively sucked from the other end surface 21B while preventing the inflow of gas from the outer peripheral side surface 22.
• each sealing portion 61, 62, 63, 68 is separated from the outer peripheral side surface 22.
• fluid e.g., air
• the porous substrate 20 is also released from the holding by the sealing portions 61, 62, 63, 68.
• the unsealing step S4 may be performed in the reverse order to the sealing step S1. As a specific example, it may be performed in the following order.
• the bag body 69 of the central sealing portion 62 contracts. This releases the sealing of the outer peripheral side surface 22 by the central sealing portion 62 and the retention of the porous substrate 20 by the central sealing portion 62.
• the bag body 69 of the other side sealing portion 63 contracts. This releases the sealing of the outer peripheral side surface 22 by the other side sealing portion 63 and the retention of the porous substrate 20 by the other side sealing portion 63.
• the bag body 69 of the one side sealing portion 61 contracts. This releases the sealing of the outer peripheral side surface 22 by the one side sealing portion 61 and the retention of the porous substrate 20 by the one side sealing portion 61. As a result, the sealing of the outer peripheral side surface 22 using the sealing unit 60 is released.
• the holding portion 65 moves by being driven by the driver 64.
• the holding portion 65 moves to one side in the axial direction D1.
• the holding portion 65 moves away from the porous substrate 20.
• the sealing portions 61, 62, 63 held by the holding portion 65 move to a position that does not face the outer peripheral side surface 22. That is, the sealing unit 60 including the holding portion 65 and the sealing portions 61, 62, 63 moves by the driver 64. Since the base end sealing portion 68 maintains the hold of the porous substrate 20 when the holding portion 65 moves, the posture of the porous substrate 20 can be stably and appropriately maintained even if the sealing unit 60 comes into contact with the porous substrate 20.
• the bag body 69 of the base end sealing portion 68 contracts. This releases the sealing of the outer peripheral side surface 22 by the base end sealing portion 68 and the retention of the porous substrate 20 by the base end sealing portion 68. This completes the sealing release process S4.
• the sealing units 61, 62, 63, and 68 included in the structure manufacturing apparatus 30 move away from the outer peripheral side surface 22 at different times. Therefore, when the sealing units 61, 62, 63, and 68 release the sealing, the porous substrate 20 can be prevented from being suddenly released from a large external force. This makes it possible to prevent the posture of the porous substrate 20 from collapsing when the sealing units 61, 62, 63, and 68 release the sealing.
• the appropriate posture of the structure manufacturing apparatus 30 can be stably maintained.
• the order in which the sealing parts 61, 62, 63, and 68 release the sealing in the sealing release process S4 may be changed.
• the removal of the seal by the other-side sealing portion 63 may be performed in parallel with the removal of the seal by the one-side sealing portion 61, or may be performed after the removal of the seal by the one-side sealing portion 61.
• the removal of the seal by the central sealing portion 62 may be performed in parallel with the removal of the seal by at least one of the one-side sealing portion 61 and the other-side sealing portion 63, or may be performed after the removal of the seal by at least one of the one-side sealing portion 61 and the other-side sealing portion 63.
• the movement of the holding portion 65 may be performed after the sealing by the base end sealing portion 68 is released, or may be performed in parallel with the release of the sealing by the base end sealing portion 68.
• the timing of the release of the sealing by the base end sealing portion 68 may be changed.
• the release of the sealing by the base end sealing portion 68 may be performed in parallel with the release of the sealing by one or more of the one side sealing portion 61, the central sealing portion 62, and the other side sealing portion 63.
• the release of the sealing by the base end sealing portion 68 may be performed before the release of the sealing by one or more of the one side sealing portion 61, the central sealing portion 62, and the other side sealing portion 63.
• the drying process S5 is carried out as shown in FIG. 15.
• the slurry layer 16L is dried.
• the drying of the slurry layer 16L can be carried out by heating the slurry layer 16L.
• the heating temperature of the porous substrate 20 in the drying process S5 may be 70°C or more and 150°C or less.
• the heating time of the porous substrate 20 in the drying process S5 may be 0.2 hours or more and 3 hours or less.
• the drying step S5 is followed by the firing step S6.
• the porous substrate 20 on which the slurry layer 16L is formed is heated to fire the slurry layer 16L.
• the heating temperature of the porous substrate 20 in the firing step S6 may be 400°C or higher and 900°C or lower.
• the heating time of the porous substrate 20 in the firing step S6 may be 1 hour or higher and 10 hours or lower.
• the fired slurry layer 16L constitutes the functional layer 15. As a result, a structure 10 including the porous substrate 20 and the functional layer 15 is obtained.
• the structure manufacturing apparatus 30 is an apparatus for manufacturing a structure 10 including a porous substrate 20 having one end surface 21A and the other end surface 21B, and a functional layer 15 held inside the porous substrate 20.
• the structure manufacturing apparatus 30 includes a plurality of sealing parts, a slurry supplying part 42, and a slurry suction part 44.
• the plurality of sealing parts contact the outer peripheral side surface 22 of the porous substrate 20 to seal the outer peripheral side surface 22.
• the slurry supplying part 42 supplies a slurry 16 including a functional material that forms the functional layer 15 to the one end surface 21A.
• the slurry suction part 44 sucks the slurry 16 supplied to the porous substrate 20 from the other end surface 21B of the porous substrate 20 whose outer peripheral side surface 22 is sealed by the plurality of sealing parts.
• Each of the plurality of sealing parts is arranged offset from each other in the axial direction D1.
• Each of the plurality of sealing parts has a contact area that contacts the outer peripheral side surface 22.
• the total contact length of each of the contact regions of the multiple sealing parts along the axial direction D1 is 50% to 100% of the length of the outer peripheral side along the axial direction D1.
• the one-side sealing part 61, the central sealing part 62, the other-side sealing part 63, and the base-end sealing part 68 can correspond to the multiple sealing parts in this embodiment.
• the method for manufacturing a structure is a method for manufacturing a structure 10 including a porous substrate 20 having one end surface 21A and the other end surface 21B, and a functional layer 15 held inside the porous substrate 20.
• the method for manufacturing a structure includes a sealing step S1, a slurry supply step S2, and a slurry suction step S3.
• a sealing step S1 a plurality of sealing parts are brought into contact with the outer peripheral side surface 22 located between the one end surface 21A and the other end surface 21B of the porous substrate 20 to seal the outer peripheral side surface 22.
• a slurry 16 containing a functional material forming the functional layer 15 is supplied to the one end surface 21A of the porous substrate 20.
• the slurry 16 is sucked from the other end surface 21B of the porous substrate 20 whose outer peripheral side surface 22 is sealed by the plurality of sealing parts.
• each of the plurality of sealing parts contacts the outer peripheral side surface 22 while being shifted from each other in the axial direction D1.
• the total contact length along the axial direction D1 of the contact region where each of the multiple sealing portions contacts the outer peripheral side surface 22 is 50% or more and 100% or less of the length along the axial direction D1 of the outer peripheral side surface 22.
• the one-side sealing portion 61, the central sealing portion 62, the other-side sealing portion 63, and the base-end sealing portion 68 may correspond to the multiple sealing portions in this embodiment.
• the multiple sealing parts can contact the outer peripheral side surface 22 in the contact area.
• the total contact length of the contact area along the first direction D1 is 50% or more of the length along the longitudinal direction of the outer peripheral side surface 22. Therefore, the outer peripheral side surface 22 can be sealed over a wide area.
• the multiple sealing parts can be brought into contact with the outer peripheral side surface at different times. Therefore, it is possible to prevent the porous substrate 20 from tilting when each sealing part contacts, and further prevent the porous substrate 20 from being held in an inclined position by each sealing part. That is, the outer peripheral side surface 22 can be stably sealed and held over a wide area while maintaining the porous substrate 20 in an appropriate position.
• the slurry 16 supplied to one end surface 21A can be effectively sucked from the other end surface 21B while suppressing the inflow of gas from the outer peripheral side surface 22.
• the difference in length of the slurry layer 16L formed in the outer peripheral part and the central part of the porous substrate 20 can be reduced.
• the resulting structure 10 can stably exert the expected functions.
• the multiple sealing portions include a first sealing portion 51 and a second sealing portion 52 that contacts the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22.
• the length of the contact area of the second sealing portion 52 is longer than the length of the contact area of the first sealing portion 51.
• one or more of the one-side sealing portion 61, the other-side sealing portion 63, and the base end sealing portion 68 may correspond to the first sealing portion 51 in this aspect.
• the central sealing portion 62 may correspond to the second sealing portion 52 in this aspect.
• the first sealing portion 51 which has a short contact area, contacts the outer peripheral side surface 22 before the second sealing portion 52, which has a long contact area, thereby more stably suppressing the posture of the porous substrate 20 from becoming unstable when the second sealing portion 52, which has a long contact area, contacts the outer peripheral side surface 22. Then, while the first sealing portion 51 maintains the porous substrate 20 in an appropriate position, the second sealing portion 52, which has a long contact area, can be used to quickly seal the outer peripheral side surface 22 over a wide area. According to this embodiment, the effect of sealing and holding the outer peripheral side surface 22 over a wide area while maintaining the porous substrate 20 in an appropriate position can be more effectively enjoyed.
• the multiple sealing portions include multiple first sealing portions 51 and second sealing portions 52.
• One of the first sealing portions 51 contacts the outer peripheral side surface 22 on one side of the second sealing portion 52 in the axial direction D1.
• Another of the first sealing portions contacts the outer peripheral side surface 22 on the other side of the second sealing portion 52 in the axial direction D1.
• the second sealing portion 52 contacts the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22. That is, the first sealing portion 51 contacts the outer peripheral side surface 22 before the second sealing portion 52 on both one side and the other side in the axial direction.
• the first sealing portion 51 contacts the outer peripheral side surface 22 before the second sealing portion 52 on both one side and the other side in the axial direction D1.
• the one-side sealing portion 61 and the other-side sealing portion 63 may correspond to the first sealing portion 51 in this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in this embodiment.
• the outer peripheral side surface can be sealed over a wider area by using three sealing portions.
• the second sealing portion 52 contacts the outer peripheral side surface 22 fixed on both sides in the axial direction D1 using the first sealing portion 51. Therefore, even if the length of the second sealing portion 52 in the axial direction D1 is long, the posture of the porous substrate 20 can be stably maintained when the second sealing portion 52 contacts it.
• the contact length L62 (mm) along the axial direction D1 of the contact area where the second sealing portion 52 contacts the outer peripheral side surface 22 is longer than the sum of the contact lengths L61 (mm) and L63 (mm) along the axial direction D1 of the contact area where the first sealing portion 51 contacts the outer peripheral side surface 22.
• the one-side sealing portion 61 and the other-side sealing portion 63 may correspond to the first sealing portion 51 in this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in this embodiment.
• the contact length L62 of the second sealing portion 52 is sufficiently long, and according to this embodiment, the effect of sealing and holding the outer peripheral side surface 22 over a wide area while maintaining the porous substrate 20 in an appropriate position can be more effectively enjoyed.
• the structure manufacturing apparatus 30 further includes a holding part 65 that holds two or more sealing parts.
• the holding part 65 is movable in the axial direction D1 relative to the porous substrate 20.
• a sealing unit 60 is configured including the holding part 65 and two or more sealing parts held by the holding part 65.
• the sealing step S1 includes a moving step S12 in which the holding part 65 that holds the two or more sealing parts is moved in the axial direction D1 relative to the outer peripheral side surface 22. In the moving step S12, the two or more sealing parts are arranged in a position facing the outer peripheral side surface 22.
• the one-side sealing part 61, the central sealing part 62, and the other-side sealing part 63 may correspond to the two or more sealing parts included in the sealing unit 60 in this embodiment.
• the holding part 65 can appropriately maintain the relative positions of the sealing parts 51 and 52, and can quickly and appropriately position the sealing parts 51 and 52 with respect to the porous substrate 20.
• the plurality of sealing parts further includes a unit outer sealing part that contacts the outer peripheral side surface 22 on the other side in the axial direction D1 of the sealing unit 60.
• the sealing unit 60 includes two or more sealing parts and a holding part 65 that holds the two or more sealing parts.
• the one-side sealing part 61, the central sealing part 62, and the other-side sealing part 63 may correspond to the two or more sealing parts included in the sealing unit 60 in this embodiment.
• the base end sealing part 68 may correspond to the unit outer sealing part in this embodiment. According to this embodiment, by further using the unit outer sealing part, the outer peripheral side surface 22 can be sealed over a wider range.
• the formation of the slurry layer 16L in the cells in the outer peripheral portion can be promoted.
• the porous substrate 20 can be stably maintained in an appropriate posture.
• the sealing portion included in the sealing unit 60 contacts the outer peripheral side surface 22 after the unit outer sealing portion contacts the outer peripheral side surface 22.
• the one-side sealing portion 61, the central sealing portion 62, and the other-side sealing portion 63 may correspond to two or more sealing portions included in the sealing unit 60 in this embodiment.
• the base end sealing portion 68 may correspond to the unit outer sealing portion in this embodiment.
• the sealing unit 60 can be used to quickly seal the outer peripheral side surface 22 over a wide area. According to this embodiment, the effect of sealing and holding the outer peripheral side surface 22 over a wide area while maintaining the porous substrate 20 in an appropriate posture can be more effectively enjoyed.
• the sealing unit 60 includes a first sealing portion 51 and a second sealing portion 52, and the first sealing portion 51 may contact the outer peripheral side surface 22 on one side in the axial direction D1 of the second sealing portion 52 before the second sealing portion 52 contacts the outer peripheral side surface 22.
• the one-side sealing portion 61 and the other-side sealing portion 63 may correspond to the first sealing portion 51 in this embodiment.
• the second sealing portion 52 contacts the outer peripheral side surface 22, both sides of which are held in the axial direction D1 by the first sealing portion 51. Therefore, even if the length of the second sealing portion 52 in the axial direction D1 is long, the posture of the porous substrate 20 can be stably maintained when the second sealing portion 52 contacts.
• the total contact length of the contact area of each sealing portion included in the sealing unit 60 is 50% or more of the length L20 of the outer peripheral side surface 22.
• the one-side sealing portion 61, the central sealing portion 62, and the other-side sealing portion 63 may correspond to two or more sealing portions included in the sealing unit 60 in this embodiment.
• the outer peripheral side surface 22 can be stably sealed and held over a wide area. This allows the slurry 16 supplied to one end surface 21A to be effectively sucked from the other end surface 21B while effectively suppressing the inflow of gas from the outer peripheral side surface 22. As a result, when the slurry is sucked into the inside of the porous substrate 20, the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 can be reduced.
• two sealing portions adjacent in the axial direction D1 among the sealing portions included in the sealing unit 60 contact each other when in contact with the outer peripheral side surface 22.
• the first sealing portion 51 and the second sealing portion 52 contact each other when in contact with the outer peripheral side surface 22.
• one or more of the one-side sealing portion 61 and the other-side sealing portion 63 may correspond to the first sealing portion 51 in this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in this embodiment. According to this embodiment, it is possible to prevent the outer peripheral side surface 22 from being insufficiently sealed in the region between the two sealing portions adjacent in the axial direction D1.
• the first sealing portion 51 faces one end 23A of the outer peripheral side surface 22 from a direction perpendicular to the axial direction D1.
• the one-side sealing portion 61 may correspond to the first sealing portion 51 in this embodiment.
• the one end 23A is an end of the outer peripheral side surface 22 located on one side in the axial direction D1.
• the first sealing portion 51 seals and holds this one end 23A. According to this embodiment, by sealing the one end 23A in the axial direction of the outer peripheral side surface 22, the slurry can be stably sucked even in the outer peripheral portion.
• the porous substrate 20 can be stably maintained in an appropriate posture.
• the unit outer sealing portion faces the other end 23B of the outer peripheral side surface 22 from a direction perpendicular to the axial direction D1.
• the base end sealing portion 68 may correspond to the unit outer sealing portion in this embodiment.
• the other end 23B is the end of the outer peripheral side surface 22 located on the other side in the axial direction D1.
• the unit outer sealing portion seals and holds this other end 23B. According to this embodiment, by sealing the other end 23B in the axial direction of the outer peripheral side surface 22, the slurry can be stably sucked even in the outer peripheral portion.
• the porous substrate 20 can be stably maintained in an appropriate posture.
• the method for manufacturing the structure further includes a sealing release step S4 in which the multiple sealing parts are separated from the outer peripheral side surface 22 to release the sealing of the outer peripheral side surface 22.
• the multiple sealing parts include a first sealing part 51 and a second sealing part 52.
• the second sealing part 52 is separated from the outer peripheral side surface 22 before the first sealing part 51 is separated from the outer peripheral side surface 22.
• one or more of the one-side sealing part 61, the other-side sealing part 63, and the base end sealing part 68 may correspond to the first sealing part 51 in this embodiment.
• the central sealing part 62 may correspond to the second sealing part 52 in this embodiment.
• the second sealing part 52 is separated from the outer peripheral side surface while the first sealing part 51 is in contact with the outer peripheral side surface 22. That is, the sealing parts are separated from the outer peripheral side surface 22 in sequence at different times. Therefore, when the sealing parts are separated from the outer peripheral side surface 22, the inclination of the porous substrate 20 can be suppressed.
• the cells 29 of the porous substrate 20 are closed at either one end face 21A or the other end face 21B.
• the structure manufacturing apparatus 30 and structure manufacturing method according to this embodiment are not limited to this example.
• the cells 29 of the porous substrate 20 may be open at both one end face 21A and the other end face 21B.
• the structure manufacturing apparatus 30 (slurry application section 40) included one side sealing section 61, central sealing section 62, other side sealing section 63, and base end sealing section 68.
• one or two of the sealing sections 61, 62, 63, and 68 may be omitted.
• the timing at which the sealing section contacts the outer peripheral side surface 22 may be the same as that of the corresponding sealing section in the manufacturing method described with reference to Figures 5 to 17.
• the timing at which the sealing section leaves the outer peripheral side surface 22 may be the same as that of the corresponding sealing section in the manufacturing method described with reference to Figures 5 to 17.
• a method for manufacturing a structure in a modified example in which one or two sealing sections are omitted may be the same as the manufacturing method described with reference to Figures 5 to 17, except that the sealing process and the unsealing process of the omitted sealing section are omitted.
• the base end sealing portion 68, the one side sealing portion 61, and the central sealing portion 62 may contact the outer peripheral side surface 22 in this order.
• the base end sealing portion 68 may contact the outer peripheral side surface 22 after the one side sealing portion 61, or may contact the outer peripheral side surface 22 in parallel with the one side sealing portion 61.
• the one side sealing portion 61, the central sealing portion 62, and the base end sealing portion 68 may correspond to the multiple sealing portions in this embodiment.
• FIG. 18 is the structure manufacturing apparatus 30 shown in FIG. 4 to FIG. 15 without the other side sealing portion 63.
• one or more of the one side sealing portion 61 and the base end sealing portion 68 may correspond to the first sealing portion 51 in any specific aspect of this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in any specific aspect of this embodiment.
• the base end sealing portion 68 may also be an outer unit sealing portion.
• the order in which the sealing portion separates from the outer peripheral side surface 22 in the sealing release process may be the opposite of the order in which the sealing portion contacts the outer peripheral side surface 22 in the sealing process.
• the base end sealing portion 68, the other side sealing portion 63, and the central sealing portion 62 may contact the outer peripheral side surface 22 in this order.
• the base end sealing portion 68 may contact the outer peripheral side surface 22 after the other side sealing portion 63, or may contact the outer peripheral side surface 22 in parallel with the other side sealing portion 63.
• the central sealing portion 62, the other side sealing portion 63, and the base end sealing portion 68 may correspond to the multiple sealing portions in this embodiment.
• FIG. 19 is the structure manufacturing apparatus 30 shown in FIG. 4 to FIG. 15 without the one-side sealing portion 61.
• one or more of the other side sealing portion 63 and the base end sealing portion 68 may correspond to the first sealing portion 51 in any specific aspect of this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in any specific aspect of this embodiment.
• the base end sealing portion 68 may also correspond to the unit outer sealing portion in any specific aspect of this embodiment.
• the order in which the sealing portion separates from the outer peripheral side surface 22 in the sealing release step may be the opposite of the order in which the sealing portion contacts the outer peripheral side surface 22 in the sealing step.
• the base end sealing portion 68 and the central sealing portion 62 may contact the outer peripheral side surface 22 in this order in the sealing process.
• the central sealing portion 62 and the base end sealing portion 68 may correspond to the multiple sealing portions in this embodiment.
• the base end sealing portion 68 may correspond to the first sealing portion 51 in any specific aspect of this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in any specific aspect of this embodiment.
• the order in which the sealing portions leave the outer peripheral side surface 22 in the sealing release process may be the opposite of the order in which the sealing portions contact the outer peripheral side surface 22 in the sealing process.
• the one-side sealing portion 61, the other-side sealing portion 63, and the central sealing portion 62 may contact the outer peripheral side surface 22 in this order.
• the one-side sealing portion 61 may contact the outer peripheral side surface 22 after the other-side sealing portion 63, or may contact the outer peripheral side surface 22 in parallel with the other-side sealing portion 63.
• the one-side sealing portion 61, the central sealing portion 62, and the other-side sealing portion 63 may correspond to the multiple sealing portions in this embodiment.
• One or more of the one-side sealing portion 61 and the other-side sealing portion 63 may correspond to the first sealing portion 51 in any specific aspect of this embodiment.
• the central sealing portion 62 may correspond to the second sealing portion 52 in any specific aspect of this embodiment.
• the order in which the sealing portion separates from the outer peripheral side surface 22 in the sealing release process may be the opposite of the order in which the sealing portion contacts the outer peripheral side surface 22 in the sealing process.
• the other-side sealing portion 63 faces the other end 23B of the outer peripheral side surface 22 from a direction perpendicular to the axial direction D1.
• the other-side sealing portion 63 seals and holds the other end 23B.
• the slurry can be stably sucked even in the outer peripheral portion. Therefore, when the slurry 16 is sucked into the inside of the porous substrate 20, the difference in length of the slurry layer 16L formed in the outer peripheral portion and the central portion of the porous substrate 20 can be more effectively reduced.
• one of the one-side sealing portion 61 and the other-side sealing portion 63 can be omitted.
• the other of the one-side sealing portion 61 and the other-side sealing portion 63 and the central sealing portion 62 can correspond to the multiple sealing portions in this embodiment.
• the other of the one-side sealing portion 61 and the other-side sealing portion 63 can correspond to the first sealing portion 51 in any specific aspect of this embodiment.
• the central sealing portion 62 can correspond to the second sealing portion 52 in any specific aspect of this embodiment.
• the multiple sealing portions may include a first sealing portion 51 that contacts the outer peripheral side surface 22, and multiple second sealing portions 52 that contact the outer peripheral side surface 22 after the first sealing portion 51 contacts the outer peripheral side surface 22.
• the multiple second sealing portions 52 may be arranged offset from one another in the axial direction D1.
• Each of the multiple second sealing portions 52 has a contact area that contacts the outer peripheral side surface 22. The sum of the contact lengths of the contact areas of each of the second sealing portions 52 may be longer than the contact length of the contact area of the first sealing portion 51.
• the sealing part that comes into contact after the other sealing parts and has a longer contact area than the other sealing parts has been described as the second sealing part 52, and the sealing part that comes into contact before that has been described as the first sealing part 51.
• the sealing part that comes into contact at any timing may be the first sealing part, and the remaining sealing parts that come into contact after the first sealing part may be the second sealing parts.
• the first sealing portion 51 which has a short contact area, contacts the outer peripheral side surface before the second sealing portion 52, which has a long total contact area.
• the multiple second sealing portions 52 which have a long total contact area, can be used to quickly seal the outer peripheral side surface 22 over a wide area while the first sealing portion 51 maintains the porous substrate 20 in an appropriate position.
• multiple second sealing portions 52 it is possible to more stably prevent the posture of the porous substrate 20 from becoming unstable when the sealing portions contact each other, compared to using a single long sealing portion having the same length as the total length of the contact areas of the multiple second sealing portions. According to this embodiment, it is possible to more effectively enjoy the effect of sealing and holding the outer peripheral side surface over a wide area while maintaining the porous substrate 20 in an appropriate position.
• the multiple second sealing portions 52 may contact the porous substrate 20 at the same time.
• the multiple second sealing portions 52 may contact the porous substrate 20 at different times. Some of the multiple second sealing portions 52 may contact the porous substrate 20 at the same time.
• one long second sealing portion 52 (central sealing portion 62) in the examples shown in FIGS. 7 to 14 may be divided into multiple second sealing portions 52 (central sealing portions 62).
• One long bag body 69 of the second sealing portion 52 (central sealing portion 62) shown in FIGS. 7 to 14 may be divided into multiple bag bodies 69 as shown in FIG. 22.
• the timing at which each sealing portion comes into contact with the outer peripheral side surface 22 may be the same as the timing of the corresponding sealing portion in the manufacturing method described with reference to FIGS. 5 to 17.
• the base side sealing portion 68, or the one side sealing portion 61 and the other side sealing portion 63 may correspond to the first sealing portion 51, and the one side sealing portion 61, the multiple central sealing portions 62 and the other side sealing portion 63, or the multiple central sealing portions 62 may correspond to the second sealing portion 52.
• the timing at which each sealing portion leaves the outer peripheral side surface 22 may be the same as the timing at which the corresponding sealing portion leaves the outer peripheral side surface 22 in the manufacturing method described with reference to FIGS. 5 to 17.

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• 2023
  • 2023-08-31 JP JP2025516497A patent/JPWO2024224656A1/ja active Pending
  • 2023-08-31 WO PCT/JP2023/031804 patent/WO2024224656A1/ja active Application Filing

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