JP2014009657A - Holding seal material, winding body and emission control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a holding seal material, a winding body and an emission control device in which, when the holding seal material is exposed under a high temperature within the emission control device, increase of organic components in exhaust gas can be suppressed, even the holding seal material with a high bulk density can be wound and fixed around an exhaust gas treatment body and when accommodating the holding seal material into a casing, the holding seal material can be prevented from being deviated.SOLUTION: The holding seal material is comprised of a planarly rectangular mat containing inorganic fibers and used to be wound around a side face of a columnar exhaust gas treatment body. The mat is configured to form two or more layers of the mat when wound around the side face of the exhaust gas treatment body. In a portion positioned in an outer layer of the layers of the mat, one or more insertion parts are formed to be inserted from the outer layer through a void formed in the mat of the outer layer into an inner layer than the outer layer. In a portion that becomes the inner layer than the outer layer, one or more accommodation parts are formed to insert the insertion parts thereto.

Description

The present invention relates to a holding sealing material, a wound body, and an exhaust gas purification device.

Particulate matter (hereinafter also referred to as PM) is contained in exhaust gas discharged from an internal combustion engine such as a diesel engine. In recent years, it has been a problem that this PM is harmful to the environment and the human body. . Further, since the exhaust gas contains harmful gas components such as CO, HC and NOx, there is a concern about the influence of the harmful gas components on the environment and the human body.

Therefore, as an exhaust gas purification device that collects PM in exhaust gas or purifies harmful gas components, an exhaust gas treatment body made of a porous ceramic such as silicon carbide or cordierite, and a casing that houses the exhaust gas treatment body In addition, various exhaust gas purification apparatuses that include a holding sealing material disposed between an exhaust gas treating body and a casing have been proposed. This holding sealing material prevents the exhaust gas treating body from being damaged by contact with the casing covering the outer periphery due to vibrations or impacts caused by traveling of an automobile or the like, and exhaust gas from between the exhaust gas treating body and the casing. Is disposed mainly for the purpose of preventing leakage.

In order to achieve these purposes, the bulk density of the holding sealing material is high, and when the exhaust gas treatment body around which the holding sealing material is wound is inserted into the casing, the assembling property at the time of press-fitting is significantly reduced. was there.

Therefore, in Patent Document 1, after partially or entirely affixing double-sided tape or attaching an adhesive to the exhaust gas treatment body surface or the exhaust gas treatment body contact side surface of the holding seal material, the holding seal material is wound around the exhaust gas treatment body. A technique for inserting into a casing is disclosed.

Patent Document 2 discloses a technique in which a holding sealing material is wound around an exhaust gas treatment body, and the winding portion is fixed by a fixing member provided on the exhaust gas treatment body.

JP 2000-8844 A JP 2001-248430 A

In recent years, large-scale exhaust gas purification apparatuses used for large vehicles such as buses and trucks tend to increase. In this large exhaust gas purification device, the weight is large, and vibrations and impacts caused by traveling of an automobile are large. In addition, the pressure loss before and after the exhaust gas treatment body is high, and the back pressure is also high. Therefore, since the holding sealing material is required to have a higher holding force, the bulk density of the holding sealing material tends to be higher.

However, when the holding sealing material having a high bulk density is assembled using the technique disclosed in Patent Document 1, the friction coefficient of the portion fixed with the double-sided tape or the adhesive is increased. In some cases, the holding sealing material cannot be well accommodated in the casing. Further, the holding sealing material having a high bulk density has a large force (restoring force) for returning to the original state when being wound, and the tape or the like may be peeled off when being fixed with the tape or the like. Further, the tape or the like contains an organic component. Therefore, when the holding sealing material is exposed to a high temperature in the exhaust gas purification apparatus, the organic components in the exhaust gas increase due to the decomposition of the tape and the like. When there are many organic components, bad smell and toxic gas are generated from the exhaust gas, which causes a problem of adversely affecting the surrounding environment.
Further, when the holding sealing material having a high bulk density is assembled using the technique disclosed in Patent Document 2, the restoring force works strongly, so that the holding sealing material may not be fixed well with the fixing member.

The present invention has been made to solve the above-described problem, and it is possible to suppress an increase in organic components in the exhaust gas when the holding sealing material is exposed to a high temperature in the exhaust gas purification apparatus. A holding sealing material that can be wound and fixed to an exhaust gas treatment body even if it is a high bulk density holding sealing material, and can prevent displacement of the holding sealing material when housed in a casing, And it aims at providing an exhaust gas purification apparatus.

In order to achieve the above object, the holding sealing material according to claim 1 is a holding sealing material made of a flat rectangular mat containing inorganic fibers and used for an application to be wound around a side surface of a columnar exhaust gas treatment body. The mat is configured such that two or more layers of the mat are formed when wound around the side surface of the exhaust gas treating body, and the portion located on the outer layer of the mat layer includes One or a plurality of insertion portions are formed to be inserted into the inner layer from the outer layer through the gap formed in the mat of the outer layer from the outer layer, and inside the outer layer. One or a plurality of accommodating portions into which the insertion portion is inserted are formed in the layer portion.

In the holding sealing material, the portion located in the outer layer of the mat layer is inserted into the inner layer from the outer layer through a gap formed between the outer layer and the outer layer mat. One or a plurality of insertion portions are formed, and one or a plurality of storage portions into which the insertion portions are inserted are formed in a portion which is an inner layer with respect to the outer layer, and is inserted into the storage portion. The inserted part can be firmly fixed. Therefore, when the holding sealing material is wound around the side surface of the exhaust gas treating body, even a holding sealing material having a high bulk density can be firmly fixed.

In the holding sealing material, when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treating body, it is not necessary to use a tape or the like, so that the tape or the like is not exposed on the outer surface of the holding sealing material. As a result, since the exhaust gas treating body wound with the holding sealing material is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding sealing material can be prevented from being displaced.
Moreover, when the holding sealing material is exposed to a high temperature in the exhaust gas purification device, an increase in organic components in the exhaust gas can be suppressed.

In the holding sealing material according to claim 2, the holding sealing material includes at least two mats, and the first mat constituting the outer layer has a first insertion portion at a first end portion. And a second insertion portion is formed at the second end, and the second insertion portion is inserted into the second mat constituting the inner layer of the outer layer. One housing portion is formed, and a second housing portion into which the first insertion portion is inserted is formed.

In the holding sealing material, when wound around the side surface of the exhaust gas treatment body, the first sealing portion into which the second insertion portion is inserted and the second accommodation portion into which the first insertion portion is inserted are fixed. . Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

In the holding sealing material according to claim 3, the first mat and the second mat are fixed to each other at least partially. For this reason, when the exhaust gas treating body around which the holding sealing material is wound is inserted into the casing, it is possible to prevent the displacement between the mats.

5. The holding sealing material according to claim 4, wherein the holding sealing material comprises a single mat, and the mat is formed in the outer layer mat when wound around the side surface of the exhaust gas treating body. The first end located in the outer layer has an insertion portion and has a second end located in the inner layer than the outer layer. An accommodating part is formed in the part, and the insertion part is configured to be inserted into the accommodating part through the through hole or the cut part.

The holding sealing material is composed of one mat. Therefore, even when the holding sealing material is formed with two or more mat layers, it is possible to prevent misalignment between the mats when the exhaust gas treating body wrapped with the holding sealing material is inserted into the casing. .

In the holding sealing material according to claim 5, the length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. Is within ± 1 mm.
When the length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is within the above range, when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treatment body, the insertion portion is inserted into the through hole or the cut. Can be easily passed through the part. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

In the holding sealing material according to claim 6, the length of the mat in the longitudinal direction of the through hole or the cut portion of the mat is 15 to 40 mm.
When the longitudinal length of the mat of the through hole or the cut portion is within the above range, the insertion portion can be easily inserted into the through hole or the cut portion when the holding sealing material is wound around the side surface of the exhaust gas treatment body and fixed. Can pass through. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

In the holding sealing material according to claim 7, the length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm.
When the length of the mat in the longitudinal direction of the mat of the insertion portion inserted in the housing portion is within the above range, the insertion portion is firmly inserted into the housing portion when the holding sealing material is wrapped around and fixed to the side surface of the exhaust gas treatment body. And fixed. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

In the holding sealing material according to an eighth aspect, slits are formed on the outer surface of the mat located in the outer layer.
When the slit is formed on the outer surface of the mat located in the outer layer, the insertion portion is easily inserted into the housing portion when the holding sealing material is wound around the side surface of the exhaust gas treatment body and fixed.

The wound body according to claim 9 is configured by a columnar exhaust gas treating body and a holding sealing material made of a planar rectangular mat containing inorganic fibers, and the holding sealing material is configured on a side surface of the exhaust gas treating body. A wound body around which the mat is wound, wherein the mat is wound around a side surface of the exhaust gas treatment body so that two or more layers of the mat are formed, and the outer layer of the mat layer One or a plurality of insertion portions are formed in the portion located in the region, and one or a plurality of accommodating portions are formed in the portion that is an inner layer with respect to the outer layer. It is characterized by being inserted into the accommodating portion through a gap formed in the mat of the layers.

In the wound body, one or a plurality of insertion portions are formed in a portion located on the outer layer of the mat layer, and one or a plurality of accommodating portions are formed in a portion that is an inner layer than the outer layer. The insertion portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer. Therefore, even a holding sealing material with a high bulk density can be firmly fixed.

In the wound body, when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treating body, it is not necessary to use a tape or the like, so the tape or the like is not exposed on the outer surface of the holding sealing material. As a result, since the winding body is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding seal material can be prevented from shifting.
Moreover, when the holding sealing material which comprises the said wound body is exposed to high temperature in an exhaust gas purification apparatus, the increase in the organic component in waste gas can be suppressed.

In the wound body according to claim 10, the holding sealing material includes at least two mats, and the first mat constituting the outer layer has a first insertion portion at a first end. And a second insertion portion is formed at the second end, and the second insertion portion is inserted into the second mat constituting the inner layer of the outer layer. A first accommodating portion is formed, a second accommodating portion into which the first inserting portion is inserted is formed, and the first inserting portion passes through a gap formed in the first mat. The second insertion portion is inserted into the first accommodation portion through a gap formed in the first mat.

In the wound body, when the holding sealing material is wound around the side surface of the exhaust gas treatment body, the first housing portion into which the second insertion portion is inserted, and the second housing into which the first insertion portion is inserted. It is fixed at the part. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

In the wound body according to an eleventh aspect, the first mat and the second mat are fixed at least partially to each other.
Therefore, when inserting a wound body in a casing, position shift between mats can be prevented.

In the wound body according to claim 12, the holding sealing material is formed of a single mat, and the mat has a through hole or a cut portion that becomes a void formed in the mat of the outer layer. The insertion portion is formed at the first end located in the outer layer, and the receiving portion is formed at the second end located in the inner layer than the outer layer. The part is inserted into the housing part through the through hole or the cut part.

In the wound body, the holding sealing material is composed of one mat. Therefore, even if it is a wound body in which the layer of two or more mats was formed, when inserting a wound body in a casing, position shift between mats can be prevented.

In the wound body according to claim 13, the length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. Is within ± 1 mm.
When the length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is within the above range, the insertion portion can be easily passed through the through hole or the cut portion. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

In the wound body according to claim 14, the length of the mat in the longitudinal direction of the through hole or the cut portion of the mat is 15 to 40 mm.
When the length in the longitudinal direction of the mat of the through hole or the cut portion is within the above range, the insertion portion can be easily passed through the through hole or the cut portion. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

In the wound body according to the fifteenth aspect, the length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm.
When the length in the longitudinal direction of the mat of the insertion portion inserted in the accommodation portion is within the above range, the insertion portion is firmly inserted and fixed in the accommodation portion. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

In the wound body according to claim 16, the holding sealing material has a slit formed on the outer surface of the mat located in the outer layer.
When the slit is formed on the outer surface of the mat located in the outer layer, the insertion portion is easily inserted into the housing portion.

The exhaust gas purifying apparatus according to claim 17, comprising a columnar exhaust gas treatment body, a casing for housing the exhaust gas treatment body, and a holding sealing material made of a planar rectangular mat containing inorganic fibers, An exhaust gas purifying apparatus comprising a wound body in which the mat constituting the holding sealing material is wound on a side surface of the body, wherein the mat includes the exhaust gas so that two or more layers of the mat are formed. One or a plurality of insertion portions are formed in a portion that is wound around the side surface of the treatment body and is located on an outer layer of the mat layer, and one or more insertion portions are formed on a portion that is an inner layer than the outer layer. A plurality of accommodating portions are formed, and the inserting portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer.

In the exhaust gas purification apparatus, one or a plurality of insertion portions are formed in a portion located in an outer layer of the mat layer, and one or a plurality of insertion portions are formed in a portion that is an inner layer than the outer layer. A housing part is formed, and the insertion part is inserted into the housing part through a gap formed in the mat of the outer layer. Therefore, even a holding sealing material with a high bulk density can be firmly fixed.

In the exhaust gas purification apparatus, when the holding sealing material is wrapped around and fixed to the side surface of the exhaust gas treating body, it is not necessary to use a tape or the like, and therefore the tape or the like is not exposed on the outer surface of the holding sealing material. As a result, since the exhaust gas treating body wound with the holding sealing material is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding sealing material can be prevented from being displaced.
Moreover, when the holding sealing material is exposed to a high temperature in the exhaust gas purification device, an increase in organic components in the exhaust gas can be suppressed.

FIG. 1 is a perspective view schematically showing an example of a holding sealing material according to the first embodiment of the present invention. 2A is a perspective view schematically showing a first mat of the holding sealing material shown in FIG. 1, and FIG. 2B is a second drawing of the holding sealing material shown in FIG. It is a perspective view which shows the mat | matte typically. Fig.3 (a)-FIG.3 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 1st embodiment of this invention. FIG. 4 is a perspective view schematically showing an example of a wound body according to the first embodiment of the present invention. 5A is a partially enlarged view of the cross section taken along line A ₁ -A _{1 of} the wound body shown in FIG. 4, and FIG. 5B is a view of B ₁ − of the wound body shown in FIG. FIG. 5C is a partially enlarged view of a cross section taken along line B ₁ , and FIG. 5C is a partially enlarged view of a cross section taken along line C ₁ -C ₁ of the wound body shown in FIG. 4. FIG. 6 is a plan view schematically showing a punching pattern when the mat according to the first embodiment of the present invention is punched from the mat material. FIG. 7 is a perspective view schematically showing an example of a method for manufacturing an exhaust gas purification apparatus according to the first embodiment of the present invention. Fig.8 (a) is a perspective view which shows typically an example of an exhaust gas purification apparatus, FIG.8 (b) is the DD sectional view taken on the line of the exhaust gas purification apparatus shown to Fig.8 (a). FIG. 9 is a perspective view schematically showing an example of the holding sealing material according to the second embodiment of the present invention. Fig.10 (a)-FIG.10 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 2nd embodiment of this invention. FIG. 11 is a perspective view schematically showing an example of a wound body according to the second embodiment of the present invention. 12A is a partially enlarged view of the cross section taken along line A ₂ -A _{2 of} the wound body shown in FIG. 11, and FIG. 12B is a view of B ₂ − of the wound body shown in FIG. FIG. 12C is a partially enlarged view of the B ₂ line cross section, and FIG. 12C is a partially enlarged view of the C ₂ -C ₂ line cross section of the wound body shown in FIG. FIG. 13 is a plan view schematically showing a punching pattern when a mat according to the second embodiment of the present invention is punched from the mat material. FIG. 14 is a perspective view schematically showing an example of the holding sealing material according to the third embodiment of the present invention. Fig.15 (a)-FIG.15 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 3rd embodiment of this invention. FIG. 16 is a perspective view schematically showing an example of a wound body according to the third embodiment of the present invention. FIG. 17A is a partially enlarged view of a cross section taken along line A ₃ -A _{3 of} the wound body shown in FIG. 16, and FIG. 17B is a view of B ₃ − of the wound body shown in FIG. FIG. 17C is a partially enlarged view of a cross section along line B ₃ , and FIG. 17C is a partially enlarged view of a cross section taken along line C ₃ -C ₃ of the wound body shown in FIG. 16. FIG. 18 is a plan view schematically showing a punching pattern when a mat according to the third embodiment of the present invention is punched from the mat material. FIG. 19 is a perspective view schematically showing an example of the holding sealing material according to the fourth embodiment of the present invention. FIG. 20A to FIG. 20C are perspective views schematically showing an example of a method for manufacturing a wound body according to the fourth embodiment of the present invention. FIG. 21 is a perspective view schematically showing an example of a wound body according to the fourth embodiment of the present invention. Figure 22 (a) is a partially enlarged view of _A 4 -A _4-wire cross-section of the wound body shown in FIG. 21, FIG. 22 (b), _{B 4} of the wound body shown in FIG. 21 - it is a partially enlarged view of a B _4-wire cross-section. FIG. 23 is a plan view schematically showing a punching pattern when a mat according to the fourth embodiment of the present invention is punched from the mat material. FIG. 24 is a perspective view schematically showing an example of a wound body according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be specifically described. However, the present invention is not limited to the following embodiments, and can be applied with appropriate modifications without departing from the scope of the present invention.

(First embodiment)
Hereinafter, 1st embodiment which is one Embodiment of the holding sealing material of this invention, a wound body, and an exhaust gas purification apparatus is described.
Since the structure of the wound body according to the present embodiment is complicated, first, the shape and the like of the holding sealing material used to manufacture the wound body having such a structure will be described.
Next, a method for producing a wound body by winding the holding sealing material having the above shape around the exhaust gas treating body will be described, and subsequently, the wound body obtained by the above method will be described.
Then, the explanation about the holding sealing material other than the above, the explanation about the manufacturing method of the holding sealing material, and the manufacturing method of the wound body will be given, and the manufacturing method and the exhaust gas purification apparatus of the exhaust gas purification apparatus will be further explained.

The holding sealing material according to the first embodiment of the present invention includes at least two mats, and the first mat constituting the outer layer is formed with a first insertion portion at a first end. In addition, the second insertion portion is formed at the second end, and the second mat that constitutes the inner layer with respect to the outer layer is the first housing in which the second insertion portion is inserted. A portion is formed, and a second accommodating portion into which the first insertion portion is inserted is formed.

Further, in the wound body according to the first embodiment of the present invention, the holding sealing material is composed of at least two mats, and the first mat that constitutes the outer layer has a first end at the first end. The second insertion portion is formed at the second end, and the second insertion portion is formed on the second mat constituting the inner layer with respect to the outer layer. A first accommodating portion to be inserted is formed, a second accommodating portion to which the first inserting portion is inserted is formed, and the first inserting portion is formed on the first mat. The second insertion part is inserted into the second accommodation part through the gap, and the second insertion part is inserted into the first accommodation part through the gap formed in the first mat.

First, the holding sealing material according to the first embodiment of the present invention will be described.
FIG. 1 is a perspective view schematically showing an example of a holding sealing material according to the first embodiment of the present invention. 2A is a perspective view schematically showing a first mat among the holding sealing materials shown in FIG. 1, and FIG. 2B is a drawing showing the holding sealing material shown in FIG. It is a perspective view which shows a 2nd mat | matte typically.

As shown in FIG. 1, the holding sealing material 1 according to this embodiment includes a first mat 11 and a second mat 12 containing inorganic fibers.
The first mat 11 and the second mat 12 are planar rectangular mats each having a predetermined longitudinal length, width, and thickness.

As shown in FIG. 2A, the first mat 11 has a convex first end 111 and a concave second end 112. A first insertion portion 111 a is formed at the first end 111, and second insertion portions 112 a and 112 b are formed at the second end 112.
In the first mat 11, the length in the longitudinal direction from the first end portion 111 not including the first insertion portion 111a to the second end portion 112 not including the second insertion portions 112a and 112b is set to L _11. The width is W ₁₁ and the thickness is T ₁₁ .

As shown in FIG. 2B, the second mat 12 has a first end 121 having a convex shape and a second end 122 having a concave shape. The first end 121 has a first accommodating portion 121a and a first accommodating portion 121b, and the second end 122 has a second accommodating portion 122a.
In the second mat 12, the length in the longitudinal direction from the first end portion 121 including the first storage portion 121a and the first storage portion 121b to the second end portion 122 including the second storage portion 122a. Is L ₁₂ , the width is W ₁₂ , and the thickness is T ₁₂ .

As shown in FIG. 1, when the first mat 11 and the second mat 12 are wound around the side surface of the columnar exhaust gas treating body, the first mat 11 is an outer layer and the second mat 12 is an inner layer. It is laminated so that
At that time, it is desirable that the first mat 11 and the second mat 12 are fixed at least partially to each other. The method for fixing is not particularly limited, and can be fixed using, for example, a sewing thread, an adhesive, a double-sided tape, or a staple (binding needle). In the holding sealing material 1 shown in FIG. 1, the first mat 11 and the second mat 12 are fixed by a sewing thread 15. Further, the fixing portion provided by these methods may be provided over the entire width direction perpendicular to the longitudinal direction of the first mat 11 and the second mat 12, as shown in FIG. In addition, both end portions of the fixed portion may be formed apart from the long side surface of the mat. In addition, the material used for fixing is preferably given identification information such as lot discrimination or shape by coloring.

Further, the first mat 11 and the second mat 12 have the first end 121 of the second mat 12 on the first end 111 side of the first mat 11 and the first mat 11 of the first mat 11. The second end portion 122 is laminated such that the second end portion 122 of the second mat 12 is disposed on the second end portion 112 side.
When the first mat 11 and the second mat 12 are wound around the side surface of the columnar exhaust gas treatment body, the second insertion portion 112a is inserted into the first accommodating portion 121a, and the second insertion portion 112b is The first insertion portion 111a is inserted into the second accommodation portion 122a while being inserted into the first accommodation portion 121b. That is, the second insertion part 112a and the first accommodation part 121a, the second insertion part 112b and the first accommodation part 121b, and the first insertion part 111a and the second accommodation part 122a are It has a shape that fits.

Next, a method for manufacturing a wound body by winding the holding sealing material having the above shape around the exhaust gas treating body will be described.
Fig.3 (a)-FIG.3 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 1st embodiment of this invention.
As shown in FIGS. 3A to 3C, the first mat 11 and the second mat 12 shown in FIG. 1 are wound around the outer periphery of the exhaust gas treatment body 13.

First, as shown in FIG. 3A, the second mat 12 serving as an inner layer is wound around the outer periphery of the exhaust gas treatment body 13.
When wound, the shortest distance a ₁ between the first end 121 and the second end 122 of the second mat 12 is preferably 0 to 50 mm. When the shortest distance a ₁ between the first end 121 of the second mat 12 and the second end portion 122 is a 0 to 50 mm, more easily insert the insertion portion into the receiving portion in a later step.

Next, as shown in FIG. 3 (b), the second insertion portion 112 a formed on the first mat 11 serving as the outer layer is used as the second layer constituting the inner layer than the first mat 11. The mat 12 is inserted into the first accommodating portion 121a formed on the mat 12. Further, the second insertion portion 112b formed on the first mat 11 is inserted into the first accommodation portion 121b formed on the second mat 12 constituting the inner layer of the first mat 11. .
Specifically, after the second insertion portions 112a and 112b are arranged in the vicinity of the first accommodating portions 121a and 121b, respectively, the second insertion portions 112a and 112b are lightly pressed inward, so that the second The insertion portions 112a and 112b can be accommodated in the first accommodation portions 121a and 121b, respectively. At that time, the base portions of the second insertion portions 112a and 112b (portions surrounded by the dotted line X in FIG. 3B) are not completely accommodated in the first accommodation portions 121a and 121b, and the exhaust gas treating body 13 It is desirable to keep a little away from If the root portions of the second insertion portions 112a and 112b are slightly separated from the exhaust gas treating body 13, the first insertion portion 111a can be easily inserted into the second accommodating portion 122a in the next step.
From the gap between the second insertion portions 112a and 112b formed at the base portions of the second insertion portions 112a and 112b, the second accommodating portion 122a formed on the second mat 12 constituting the inner layer is provided. Can see.

Finally, as shown in FIG. 3C, the first insertion portion 111 a formed on the first mat 11 is formed on the second mat 12 that constitutes a layer inside the first mat 11. It inserts in the made 2nd accommodating part 122a.
Specifically, the first insertion portion 111a is inserted into the gap between the second insertion portions 112a and 112b formed at the root portions of the second insertion portions 112a and 112b, and is located inside the first mat 11. It inserts in the 2nd accommodating part 122a formed in the 2nd mat | matte 12 which comprises a layer.

In the method for manufacturing a wound body according to the present embodiment, the second insertion portions 112a and 112b are inserted into the first housing portions 121a and 121b, respectively, and then the first insertion portion 111a is inserted into the second housing portion 122a. However, the order in which the insertion portions are inserted into the accommodation portions is not particularly limited. For example, after the first insertion portion 111a is inserted into the second storage portion 122a, the second insertion portions 112a and 112b may be inserted into the first storage portions 121a and 121b, respectively. 111a and the second insertion portions 112a and 112b may be simultaneously inserted into the second accommodation portion 122a and the first accommodation portions 121a and 121b, respectively.

Next, the wound body obtained by the above method will be described with reference to FIGS. 4 and 5 (a) to 5 (c).
FIG. 4 is a perspective view schematically showing an example of a wound body according to the first embodiment of the present invention.
5A is a partially enlarged view of the cross section taken along line A ₁ -A _{1 of} the wound body shown in FIG. 4, and FIG. 5B is a view of B ₁ − of the wound body shown in FIG. FIG. 5C is a partially enlarged view of a cross section taken along line B ₁ , and FIG. 5C is a partially enlarged view of a cross section taken along line C ₁ -C ₁ of the wound body shown in FIG. 4.

As shown in FIG. 4, the wound body 10 according to the present embodiment includes a columnar exhaust gas treating body 13, a planar rectangular first mat 11 and a second mat 12 containing inorganic fibers. 1 and is wound around the side surface of the exhaust gas treating body 13 so that the first mat 11 is an outer layer and the second mat 12 is an inner layer.

Next, the fitting part into which the first mat 11 and the second mat 12 are fitted will be described.
As shown in FIG. 5A, when the first mat 11 is wound around the exhaust gas treating body 13, a gap 14 a is formed between the first end 111 and the second end 112. . The second insertion portion 112a formed in the first mat 11 passes through the gap 14a, and the first accommodation portion formed in the second mat 12 constituting the inner layer of the first mat 11 121a is inserted. That is, the second insertion portion 112 a is inserted from the second end portion 122 side of the second mat 12 toward the first end portion 121 side.

As shown in FIG. 5B, when the first mat 11 is wound around the exhaust gas treating body 13, a gap 14 b is formed between the first end 111 and the second end 112. . The first insertion portion 111a formed in the first mat 11 passes through the gap 14b, and the second accommodation portion formed in the second mat 12 that constitutes a layer on the inner side of the first mat 11. 122a is inserted. That is, the first insertion portion 111a is inserted from the first end 121 side of the second mat 12 toward the second end 122 side.

As shown in FIG. 5C, when the first mat 11 is wound around the exhaust gas treating body 13, a gap 14 c is formed between the first end 111 and the second end 112. . The second insertion portion 112b formed in the first mat 11 passes through the gap 14c, and the first accommodating portion formed in the second mat 12 that constitutes a layer on the inner side of the first mat 11. It is inserted in 121b. That is, the second insertion portion 112 b is inserted from the second end portion 122 side of the second mat 12 toward the first end portion 121 side.

Thus, in the wound body 10 according to the present embodiment, the first housing portion 121a into which the second insertion portion 112a is inserted, the second housing portion 122a into which the first insertion portion 111a is inserted, and The holding sealing material 1 is fixed at three locations of the first accommodating portion 121b in which the second insertion portion 112b is inserted.
Moreover, the 2nd insertion part 112a, the 1st insertion part 111a, and the 2nd insertion part 112b are inserted in each accommodating part toward a different direction alternately.
Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

The length in the longitudinal direction of the second mat 12 of the second insertion portion 112a inserted into the first accommodation portion 121a, the second of the second insertion portion 112b inserted into the first accommodation portion 121b. The length in the longitudinal direction of the mat 12 and the length in the longitudinal direction of the second mat 12 of the first insertion portion 111a inserted in the second accommodating portion 122a are 10 to 100 mm, respectively. Is desirable.

Subsequently, the configuration of the holding sealing material other than the above will be described in detail.
Because the second insertion portion 112a and the first accommodation portion 121a, the second insertion portion 112b and the first accommodation portion 121b, and the first insertion portion 111a and the second accommodation portion 122a are fitted to each other. In the longitudinal direction of the mat of the second insertion portion 112a and the first accommodation portion 121a, the second insertion portion 112b and the first accommodation portion 121b, and the first insertion portion 111a and the second accommodation portion 122a It is desirable that the positions in the direction perpendicular to are equal to each other.

In the first mat, it is desirable that a slit is formed at the base of the insertion portion. The position and number of slits are not particularly limited.
For example, in the holding sealing material according to the present embodiment shown in FIG. 2A, slits 113a and 113b are formed at the base of the first insertion portion 111a, and slits 113c are formed at the base of the second insertion portion 112a. A slit 113 d is formed at the base of the insertion portion 112 b along the longitudinal direction of the first mat 11. With such slits are formed, increasing the long holding area the longitudinal length L ₁₁ of the first mat 11, it becomes easy to insert the insertion portion into the accommodating portion. The length of the slit 113 is desirably 5 to 30 mm.

As for the length of the 1st mat 11 of the 1st insertion part 111a and the 2nd insertion parts 112a and 112b in the longitudinal direction, it is desirable that it is 3-100 mm, respectively. Moreover, it is desirable that the lengths of the first mating portion 121a, the first accommodating portion 121b, and the second mating portion 122a in the longitudinal direction of the second mat 12 are 3 to 100 mm, respectively.

The lengths of the first insertion portion 111a and the second insertion portions 112a and 112b in the direction perpendicular to the longitudinal direction of the first mat 11 are each preferably 15 to 100 mm. In addition, the lengths of the first storage portion 121a, the first storage portion 121b, and the second storage portion 122a in the direction perpendicular to the longitudinal direction of the second mat 12 are each preferably 15 to 100 mm.
Furthermore, the length in the direction perpendicular to the longitudinal direction of the mat of the second insertion portion 112a and the first accommodation portion 121a, the direction perpendicular to the longitudinal direction of the mat of the second insertion portion 112b and the first accommodation portion 121b. And the lengths of the first insertion portion 111a and the second storage portion 122a in the direction perpendicular to the longitudinal direction of the mat are preferably equal to each other. In particular, the first insertion portion 111a, the second insertion portion 112a, the second insertion portion 112b, the first accommodation portion 121a, the first accommodation portion 121b, and the second accommodation portion 122a are perpendicular to the longitudinal direction of the mat. It is more desirable that the lengths in all directions are equal.

The length L ₁₁ in the longitudinal direction of the first mat 11 not including each insertion portion is preferably 25 to 75 mm longer than the length L ₁₂ in the longitudinal direction of the second mat 12 including each accommodating portion. When the length L ₁₁ in the longitudinal direction of the first mat 11 not including each insertion portion is within the above range, each insertion portion formed in the first mat 11 is formed in the second mat 12. It can be surely inserted into each housing part. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

Longitudinal length L ₁₁ of the first mat 11 without the respective insertion _portions, and a longitudinal length L ₁₂ of the second mat ₁₂ comprising each of the accommodating portions, exhaust gas treatment columnar trying Makitsukeyo It is desirable to be within ± 95 mm of the length of the outer periphery of the body. Longitudinal length L ₁₁ of the first mat 11 without the respective insertion _portions, and, when the longitudinal length L ₁₂ of the second mat ₁₂ comprising each of the accommodating portion is within the above range, the holding sealing There is no gap when the material is wound around the exhaust gas treating body, and the holding sealing material is not displaced or twisted.

Width _{W 12} of width _{W 11} and a second mat 12 of the first mat 11, 5 to 15 mm short it is desirable for the length in the longitudinal direction of the respective exhaust gas treating body.
The thickness _{T 12} of the thickness _{T 11} and the second mat 12 of the first mat 11 is preferably respectively a 1.5 to 15 mm.

The inorganic fibers constituting the mat are not particularly limited, and may be alumina-silica fibers, alumina fibers, silica fibers, glass fibers, or biosoluble fibers. Moreover, glass fiber may be sufficient. What is necessary is just to change according to the characteristics etc. which are required for a holding sealing material, such as heat resistance and wind erosion resistance.
Among these, low crystalline alumina inorganic fibers are desirable, and low crystalline alumina inorganic fibers having a mullite composition are more desirable.

The first mat 11 and the second mat 12 are preferably needle mats obtained by subjecting a base mat made of inorganic fibers to needle punching. The needle punching process refers to inserting and removing fiber entanglement means such as a needle with respect to the base mat.
In the first mat 11 and the second mat 12, inorganic fibers having a relatively long average fiber length are entangled three-dimensionally by the needle punching process. The mat is subjected to the needle punching process in the width direction perpendicular to the longitudinal direction, but the direction in which the needle punching process is performed is not particularly limited, and may be a direction oblique to the longitudinal direction or random. May be in any direction. Further, the needle punching process may be performed obliquely with respect to the thickness direction.
Further, the needle punching process may be performed from only one surface of the mat or from both surfaces.
In addition, in order to exhibit the entangled structure, the inorganic fiber has a certain average fiber length and average fiber diameter, for example, the average fiber length of the inorganic fiber is 4 to 120 mm, the average fiber diameter is 4 to 8 μm, It is desirable not to include inorganic fibers having a fiber diameter of 3 μm or less. In addition to being easily entangled by the needle punching process, the inorganic fibers within the above range have the property of hardly adversely affecting the human body even if the inorganic fibers are scattered.

It is desirable that identification information is provided on the first mat 11 and the second mat 12.
As the identification information, characters such as ink jet characters and bar codes, marking with an oil-based pen, tape, and the like can be used. According to the information display, for example, the direction in which the exhaust gas treating body is wound on at least one surface of the first mat 11 and the second mat 12 is described as “this surface is inside” and “this surface is outside”. However, as other information, at least one selected from the product name, product number, serial number, product type, weight, product size, assembly method, assembly direction, applicable model, alert, contact information and company name. One piece of information can be entered. The character displayed in the character part is preferably at least one piece of information selected from alphabets, numbers, kanji, hiragana, katakana, symbols, and dots.

Next, the manufacturing method of the holding sealing material according to the first embodiment of the present invention will be described.
As a manufacturing method of the holding sealing material according to the first embodiment of the present invention, for example, a preparation step of preparing a mat material containing inorganic fibers, and a first insertion portion at the first end portion from the mat material are provided. A first mat formed with a second insertion portion formed at the second end, and a first accommodating portion into which the second insertion portion is inserted, and the first mat A punching step of punching a second mat in which a second accommodating portion is inserted, and winding the first mat and the second mat around the side surface of the columnar exhaust gas treatment body And a laminating step in which the first mat is an outer layer and the second mat is an inner layer.

According to the above method, first, a mat member having a predetermined size is prepared.
The mat material can be produced by applying the needle punching process described above to the base mat material. In the base mat material, the inorganic fibers are loosely entangled through the spinning process. By subjecting the loosely entangled inorganic fibers to a needle punching treatment, the inorganic fibers can be entangled in a more complex manner, and a mat material having an entangled structure can be obtained.

A binder is attached to the mat material as necessary. By adhering the binder to the mat material, the entangled structure between the inorganic fibers can be strengthened, and the bulk of the mat material can be suppressed.

As the binder, an emulsion prepared by dispersing acrylic latex or rubber latex in water can be used. The binder is sprayed uniformly on the entire mat material using a spray or the like, and the binder is adhered to the mat material.
The amount of the binder to be attached is preferably 0.01 to 15% by weight, more preferably 0.05 to 10% by weight, and more preferably 0.1 to 3% by weight based on the fiber amount. More desirable.

Thereafter, the mat material is dried to remove moisture in the binder. As a drying condition, for example, it may be dried at 95 to 150 ° C. for 1 to 30 minutes. A mat member can be manufactured through a drying process.

It is desirable to give identification information to the mat material before the punching process. As the identification information, characters such as ink jet characters and bar codes, marking with an oil-based pen, tape, and the like can be used. According to the information display, for example, the direction in which the exhaust gas treating body is wound on at least one surface of the first mat 11 and the second mat 12 is described as “this surface is inside” and “this surface is outside”. However, as other information, at least one selected from the product name, product number, serial number, product type, weight, product size, assembly method, assembly direction, applicable model, alert, contact information and company name. One piece of information can be entered. The character displayed in the character part is preferably at least one piece of information selected from alphabets, numbers, kanji, hiragana, katakana, symbols, and dots.

Next, a punching process is performed.
FIG. 6 is a plan view schematically showing a punching pattern when the mat according to the first embodiment of the present invention is punched from the mat material.
A mat member 100 shown in FIG. 6 has an area where a plurality of first mats 11 and second mats 12 according to this embodiment can be punched. The mat material is cut at the solid line portion in FIG. 3 to produce the first mat 11 and the second mat 12.

The method of punching the mat material and the apparatus used for punching the mat material are not particularly limited, and a conventionally known method can be used.
For example, as the punching blade, a Thomson blade having a blade designed in the same shape as the punching pattern when the mat is punched can be used, and as the punching device, a hydraulic press machine or the like can be used.
Since the shapes of the first mat 11 and the second mat 12 that have been punched have already been described, a detailed description thereof will be omitted.

A slit 113 may be formed in the first mat 11 simultaneously with the punching process or before and after the punching process.
When slitting is performed before and after the punching process, only the outer peripheral portions of the first mat 11 and the second mat 12 are punched with a Thomson blade, or before the punching process, with a cutter. A method is mentioned.

The dimensions of the first mat 11 and the second mat 12, the positions and dimensions of the slits, and the like can be determined by changing the pattern of the Thomson blade used as the punching blade.

When the first mat 11 and the second mat 12 obtained by the above process are wound around the side surface of the columnar exhaust gas treating body, the first mat 11 is an outer layer, and the second mat 12 is an inner layer. A laminating step for laminating is performed.

In the laminating step, the center of the length L ₁₁ in the longitudinal direction of the first mat 11 not including each insertion portion is coincident with the center of the length L ₁₂ in the longitudinal direction of the second mat 12 including each accommodating portion. It is desirable to laminate so as to. When the first mat 11 and the second mat 12 are laminated as described above, the obtained holding sealing material 1 can be easily wound around the exhaust gas treating body.

You may perform the process of fixing the 1st mat 11 and the 2nd mat 12 after the said lamination process. The fixing method is not particularly limited, and can be fixed using, for example, a sewing thread, an adhesive, or the like.
The holding sealing material according to the present embodiment can be manufactured through the above steps.

Next, the holding sealing material according to the present embodiment obtained by the above method is wound around the exhaust gas treating body to produce a wound body. The manufacturing method of a wound body is demonstrated using FIG. 3 (a)-FIG.3 (c), and about the obtained wound body, FIG.4 and FIG.5 (a)-FIG.5 (c) ), The description thereof will be omitted here.

Then, the manufacturing method of the exhaust gas purification apparatus which concerns on 1st embodiment of this invention is demonstrated.
In the method for manufacturing an exhaust gas purifying apparatus according to the first embodiment of the present invention, an exhaust gas purifying apparatus is manufactured by manufacturing a wound body by the above-described method and storing the obtained wound body in a casing. Manufacturing.

FIG. 7 is a perspective view schematically showing an example of a method for manufacturing an exhaust gas purification apparatus according to the first embodiment of the present invention.
In the method for manufacturing the exhaust gas purifying apparatus according to the present embodiment, the preparation process, the punching process, the stacking process, and the winding process are performed as in the method for manufacturing the wound body according to the present embodiment. Since these steps have already been described, a detailed description thereof will be omitted.

After these steps, an accommodation step is performed.
As shown in FIG. 7, an exhaust gas treating body (wound body 10) around which a mat is wound is press-fitted into a casing 57 having a predetermined size and mainly made of metal or the like.

In order to exhibit a predetermined repulsive force (that is, a force for holding the honeycomb filter) by compressing the sealing material after the press-fitting, the inner diameter of the casing 57 is the holding sealing material 1 of the exhaust gas treating body 13 around which the holding sealing material 1 is wound. It is a little smaller than the outermost diameter including the thickness.

The method of accommodating the exhaust gas treating body wrapped with the holding sealing material in the casing is not limited to the press-fitting method (stuffing method), and includes a sizing method (swaging method), a clamshell method, and the like. .
In the sizing method (swaging method), an exhaust gas treatment body around which a holding sealing material is wound is inserted into the casing, and then compressed from the outer peripheral side so as to reduce the inner diameter of the casing. In the clamshell method, after the casing is separated into two parts, the first casing and the second casing, the exhaust gas treatment body around which the holding sealing material is wound is placed on the first casing. Cover and seal the second casing.
Among the methods for accommodating the exhaust gas treating body wrapped with the holding sealing material in the casing, the press-fitting method (stuffing method) or the sizing method (swaging method) is desirable. This is because in the press-fitting method (stuffing method) or the sizing method (swaging method), it is not necessary to use two parts as the casing, so the number of manufacturing processes can be reduced.

Finally, the exhaust gas purifying apparatus according to the first embodiment of the present invention manufactured by the above process will be described.
The exhaust gas purifying apparatus according to the first embodiment of the present invention is composed of a columnar exhaust gas treatment body, a casing that accommodates the exhaust gas treatment body, and a holding sealing material made of a flat rectangular mat containing inorganic fibers, An exhaust gas purifying apparatus comprising a wound body in which the mat constituting the holding sealing material is wound around a side surface of the exhaust gas treating body, wherein the mat is formed with two or more layers of the mat. Wrapped around the side surface of the exhaust gas treatment body, one or a plurality of insertion portions are formed in a portion located on the outer layer of the mat layer, and in a portion that becomes an inner layer than the outer layer. One or a plurality of accommodating portions are formed, and the inserting portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer.

Hereinafter, an example of the exhaust gas purifying apparatus according to the present embodiment will be described with reference to FIGS. 8 (a) and 8 (b).
Fig.8 (a) is a perspective view which shows typically an example of an exhaust gas purification apparatus, FIG.8 (b) is the DD sectional view taken on the line of the exhaust gas purification apparatus shown to Fig.8 (a).
As shown in FIGS. 8A and 8B, the exhaust gas purifying apparatus 500 according to this embodiment includes a columnar exhaust gas treatment in which a large number of cells 501 are arranged in parallel in the longitudinal direction with a cell wall 502 interposed therebetween. The body 13, the casing 57 that houses the exhaust gas treatment body 13, and the holding sealing material 1 that is disposed between the exhaust gas treatment body 13 and the casing 57 and holds the exhaust gas treatment body 13.
That is, the exhaust gas purification apparatus 500 according to the present embodiment includes the holding sealing material 1, the exhaust gas treatment body 13, and the casing 57 according to the present embodiment shown in FIG. Further, the exhaust gas purifying apparatus 500 according to the present embodiment includes the wound body 10 according to the present embodiment shown in FIG.

Since the structure of the holding sealing material 1 and the wound body 10 according to the present embodiment has already been described, the description thereof will be omitted.
The casing 57 shown in FIGS. 8A and 8B is mainly made of a metal such as stainless steel, and has a cylindrical shape. Further, the inner diameter is slightly shorter than the combined length of the diameter of the end face of the exhaust gas treatment body 13 and the thickness of the holding sealing material 1 wound around the exhaust gas treatment body 13. (in FIG. 8 (a), the direction indicated by the double arrow W ₈₎ longitudinally of the processing member 13 has length and substantially the same in.

As shown in FIGS. 8A and 8B, the exhaust gas purifying apparatus 500 according to the present embodiment has one of the cells sealed with the sealing material 58 as the exhaust gas treatment body 13. A honeycomb filter 13 is used.
The honeycomb filter 13 is mainly made of porous ceramic and has a cylindrical shape. Further, on the outer periphery of the honeycomb filter 13, a sealing material layer 59 is provided for the purpose of reinforcing the outer peripheral portion of the honeycomb filter 13, adjusting the shape, and improving the heat insulating property of the honeycomb filter 13.
The internal configuration of the honeycomb filter 13 is as already described in the explanation of the exhaust gas purifying apparatus of the present embodiment described above.

A case where the exhaust gas passes through the exhaust gas purifying apparatus having the above-described configuration will be described below with reference to FIG.
As shown in FIG. 8B, the exhaust gas discharged from the internal combustion engine and flowing into the exhaust gas purification apparatus 500 (in FIG. 8B, the exhaust gas is indicated by G and the flow of the exhaust gas is indicated by an arrow) is the honeycomb. The filter 13 flows into one cell 501 opened on the exhaust gas inflow side end surface 50 a of the filter 13, and passes through the cell wall 502 separating the cells 501. At this time, PM in the exhaust gas is collected by the cell wall 502, and the exhaust gas is purified. The purified exhaust gas flows out from other cells 501 opened in the exhaust gas outflow side end face 50b and is discharged to the outside.

The effects of the wound body, the wound body manufacturing method, the exhaust gas purification device, and the exhaust gas purification device manufacturing method according to the first embodiment of the present invention will be listed below.
(1) In the holding sealing material according to the present embodiment, the outer layer passes through a gap formed between the outer layer and the outer layer mat in a portion located in the outer layer of the mat layer. One or a plurality of insertion portions to be inserted into the inner layer are formed, and one or a plurality of accommodating portions into which the insertion portions are inserted are formed in a portion that becomes an inner layer from the outer layer. . Therefore, when the holding sealing material is wound around the side surface of the exhaust gas treating body, even a holding sealing material having a high bulk density can be firmly fixed.

(2) In the holding sealing material according to the present embodiment, it is not necessary to use a tape or the like when the holding sealing material is wrapped around and fixed to the side surface of the exhaust gas treatment body, so that the tape or the like is exposed on the outer surface of the holding sealing material. do not do. As a result, since the exhaust gas treating body wound with the holding sealing material is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding sealing material can be prevented from being displaced. Moreover, when the holding sealing material is exposed to a high temperature in the exhaust gas purification device, an increase in organic components in the exhaust gas can be suppressed.

(3) In the holding sealing material according to the present embodiment, when wound around the side surface of the exhaust gas treating body, the first housing portion into which the second insertion portion is inserted, and the first insertion portion into which the first insertion portion is inserted. Secure in the second housing. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

(4) In the holding sealing material according to the present embodiment, the first mat and the second mat are fixed to each other at least partially. For this reason, when the exhaust gas treating body around which the holding sealing material is wound is inserted into the casing, it is possible to prevent the displacement between the mats.

(5) In the holding sealing material according to the present embodiment, the length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm. When the length of the mat in the longitudinal direction of the mat of the insertion portion inserted in the housing portion is within the above range, the insertion portion is firmly inserted into the housing portion when the holding sealing material is wrapped around and fixed to the side surface of the exhaust gas treatment body. And fixed. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

(6) In the holding sealing material according to this embodiment, slits are formed on the outer surface of the mat located in the outer layer. When the slit is formed on the outer surface of the mat located in the outer layer, the insertion portion is easily inserted into the housing portion when the holding sealing material is wound around the side surface of the exhaust gas treatment body and fixed.

(7) In the wound body according to the present embodiment, one or a plurality of insertion portions are formed in the portion located in the outer layer of the mat layer, and in the portion that becomes the inner layer from the outer layer. One or a plurality of accommodating portions are formed, and the inserting portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer. Therefore, even a holding sealing material with a high bulk density can be firmly fixed.

(8) In the wound body according to the present embodiment, when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treating body, it is not necessary to use a tape or the like, so that the tape or the like is exposed on the outer surface of the holding sealing material. do not do. As a result, since the winding body is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding seal material can be prevented from shifting.
Moreover, when the holding sealing material which comprises the said wound body is exposed to high temperature in an exhaust gas purification apparatus, the increase in the organic component in waste gas can be suppressed.

(9) In the wound body according to the present embodiment, when the holding sealing material is wound around the side surface of the exhaust gas treating body, the first housing portion into which the second insertion portion is inserted, and the first insertion portion are It is fixed by the inserted second accommodating portion. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

(10) In the wound body according to the present embodiment, the first mat and the second mat are fixed to each other at least partially. Therefore, when inserting a wound body in a casing, position shift between mats can be prevented.

(11) In the wound body according to the present embodiment, the length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm. When the length in the longitudinal direction of the mat of the insertion portion inserted in the accommodation portion is within the above range, the insertion portion is firmly inserted and fixed in the accommodation portion. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

(12) In the wound body according to the present embodiment, the holding sealing material has slits formed on the outer surface of the mat located in the outer layer. When the slit is formed on the outer surface of the mat located in the outer layer, the insertion portion is easily inserted into the housing portion.

(13) In the exhaust gas purifying apparatus according to the present embodiment, one or a plurality of insertion portions are formed in a portion located on the outer layer of the mat layer, and the portion becomes an inner layer than the outer layer. One or a plurality of accommodating portions are formed, and the insertion portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer. Therefore, even a holding sealing material with a high bulk density can be firmly fixed.

(14) In the exhaust gas purifying apparatus according to the present embodiment, when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treating body, it is not necessary to use a tape or the like, so that the tape or the like is exposed on the outer surface of the holding sealing material. do not do. As a result, since the exhaust gas treating body wound with the holding sealing material is hardly caught when inserted into the casing, the housing can be easily accommodated and the holding sealing material can be prevented from being displaced. Moreover, when the holding sealing material is exposed to a high temperature in the exhaust gas purification device, an increase in organic components in the exhaust gas can be suppressed.

(Second embodiment)
Hereinafter, a second embodiment which is an embodiment of the holding sealing material, the wound body, and the exhaust gas purifying apparatus of the present invention will be described.

The holding sealing material according to the second embodiment of the present invention is composed of one mat, and the mat is a through hole that becomes a gap formed in the mat of the outer layer when wound around the side surface of the exhaust gas treating body. An insertion portion is formed at a first end portion having a hole and located in the outer layer, and a receiving portion is formed at a second end portion located in an inner layer than the outer layer. The insertion portion is configured to be inserted into the housing portion through the through hole.

Further, in the wound body according to the second embodiment of the present invention, the holding sealing material is composed of a single mat, and the mat has a through-hole serving as a gap formed in the mat of the outer layer. The insertion portion is formed at the first end located in the outer layer, and the receiving portion is formed at the second end located in the inner layer than the outer layer. The part is inserted into the accommodating part through the through hole.

First, the holding sealing material according to the second embodiment of the present invention will be described.
FIG. 9 is a perspective view schematically showing an example of the holding sealing material according to the second embodiment of the present invention.
As shown in FIG. 9, the holding sealing material 2 according to the present embodiment includes a mat 21 containing inorganic fibers. The mat 21 is a flat rectangular mat having a predetermined length, width and thickness in the longitudinal direction.

The mat 21 has a convex first end 211, a concave second end 212, and a through hole 214. An insertion portion 211 a is formed at the first end portion 211, and an accommodating portion 212 a is formed at the second end portion 212.

In the mat 21, the length in the longitudinal direction from the first end 211 not including the insertion portion 211a to the second end 212 including the accommodating portion 212a is L ₂ , the width is W ₂₁ , and the thickness is T ₂₁ . To do. Further, in L ₂ , the length in the longitudinal direction from the first end portion 211 not including the insertion portion 211 a to the center of the through hole 214 is L ₂₁ , and the second length including the accommodating portion 212 a from the center of the through hole 214. the longitudinal length of the end portion 212 and _{L 22.}

The mat 21 is wound around the side surface of the columnar exhaust gas treatment body so that the second end 212 to the through hole 214 is an inner layer, and the through hole 214 to the first end 211 is an outer layer. . That is, the through hole 214 is formed so as to extend from the inner layer to the outer layer.
And the insertion part 211a is inserted in the accommodating part 212a through the through-hole 214. FIG. That is, the insertion part 211a and the accommodation part 212a are shaped to fit each other.

Next, a method for manufacturing a wound body by winding the holding sealing material having the above shape around the exhaust gas treating body will be described.
Fig.10 (a)-FIG.10 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 2nd embodiment of this invention.
As shown in FIG. 10A to FIG. 10C, the mat 21 shown in FIG. 9 manufactured in the above process is wound around the outer periphery of the exhaust gas treatment body 23.

First, as shown to Fig.10 (a), the 2nd edge part 212 used as an inner layer to the through-hole 214 is wound around the outer periphery of the waste gas processing body 23. FIG. At that time, the through hole 214 is arranged so as to extend from the inner layer to the outer layer. That is, when the mat 21 is wound around the outer periphery of the exhaust gas treating body 23, it is wound so as to overlap the mat 21 that is wound first, in the vicinity of the portion where the through hole 214 exists. Therefore, the position of the through-hole 214 in the wound mat 21 is very close to the accommodating portion 212a formed in the second end portion 212, and is a through-hole with respect to the outer periphery of the exhaust gas treatment body 23. 214 comes to be located diagonally. Accordingly, a part of the accommodating portion 212a can be seen through the through hole 214, and the insertion of the insertion portion 211a is relatively easy.
Next, as shown in FIG. 10B, the outer layer from the through hole 214 to the first end 211 is wound around the outer periphery of the exhaust gas treatment body 23.

Finally, as shown in FIG. 10C, the insertion portion 211a is inserted into the through hole 214 and inserted into the accommodating portion 212a formed in the inner layer.

Next, the wound body obtained by the above method will be described with reference to FIGS. 11 and 12 (a) to 12 (c).
FIG. 11 is a perspective view schematically showing an example of a wound body according to the second embodiment of the present invention.
12A is a partially enlarged view of the cross section taken along line A ₂ -A _{2 of} the wound body shown in FIG. 11, and FIG. 12B is a view of B ₂ − of the wound body shown in FIG. FIG. 12C is a partially enlarged view of the B ₂ line cross section, and FIG. 12C is a partially enlarged view of the C ₂ -C ₂ line cross section of the wound body shown in FIG.

As shown in FIG. 11, the wound body 20 according to this embodiment includes a columnar exhaust gas treatment body 23 and a holding sealing material 2 including a planar rectangular mat 21 containing inorganic fibers, and the exhaust gas treatment body. A mat 21 is wound around the side surface of 23.

Next, the fitting part in which the insertion part 211a and the accommodating part 212a of the mat 21 are fitted will be described.
As shown in FIGS. 12A and 12C, the mat 21 circulates around the outer periphery of the exhaust gas treatment body 23 to form an inner layer, and then passes through the outside of the second end portion 212 to exhaust gas. The outer periphery of the processing body 23 is further rounded to form an outer layer.

As shown in FIG. 12B, the through-hole 214 is arranged to extend from the inner layer to the outer layer, so that the through-hole 214 becomes a gap through which the insertion portion 211a passes. The insertion portion 211a formed at the first end 211 of the mat 21 constituting the outer layer passes through the through-hole (gap) 214 to the second end 212 of the mat 21 constituting the inner layer. It is inserted into the formed accommodating part 212a.
Thus, in the wound body 20 according to the present embodiment, the holding sealing material 2 is fixed by the accommodating portion 212a in which the insertion portion 211a is inserted.

The length of the mat 21 in the longitudinal direction of the insertion portion 211a inserted in the housing portion 212a is preferably 10 to 100 mm.

Subsequently, the configuration of the holding sealing material other than the above will be described in detail.

In order for the insertion part 211a and the accommodation part 212a to be fitted to each other, the positions of the insertion part 211a, the accommodation part 212a, and the through hole 214 in the direction perpendicular to the longitudinal direction of the mat 21 are preferably equal. In particular, in the direction perpendicular to the longitudinal direction of the mat 21, it is desirable that the centers of the insertion portion 211 a, the accommodation portion 212 a, and the through hole 214 coincide with the center of the width ₂₁ of the mat 21. Furthermore, it is desirable that the length of the insertion portion 211a, the accommodation portion 212a, and the through hole 214 in the direction perpendicular to the longitudinal direction of the mat 21 is 15 to 100 mm.

The shape of the through hole 214 is not particularly limited as long as it is a size that allows the insertion portion 211a to pass therethrough.
For example, in the holding sealing material according to this embodiment shown in FIG. 9, the shape of the through hole 214 is a rectangular shape. The length of the through hole 214 in the longitudinal direction of the mat 21 is desirably 15 to 40 mm. The length of the through hole 214 in the direction perpendicular to the longitudinal direction of the mat 21 is desirably 30 to 80 mm. Furthermore, the length of the through hole 214 in the direction perpendicular to the longitudinal direction of the mat 21 is desirably within ± 1 mm with respect to the length of the insertion portion 211a in the direction perpendicular to the longitudinal direction of the mat 21.

The through hole 214 has a length L ₂₁ in the longitudinal direction from the first end 211 not including the insertion portion 211 a to the center of the through hole 214, and a second end including the accommodating portion 212 a from the center of the through hole 214. it is preferable that the longitudinal direction up to 212 and the length L ₂₂ are formed in equal positions.

The second center to the length _{L 22} of the end portion 212 through hole 214 including a housing portion 212a, the diameter of the exhaust gas treating body D, and the thickness _{T 21} of the mat 21, the longitudinal mat 21 of the insertion portion 211a When the length in the direction is L _CV and the number of mat layers excluding the outer layer is n, it is desirable to satisfy the following formula.
{D + 2 (n + 1/2) T ₂₁ } × π−2L _CV ≦ L ₂₂ ≦ {D + 2 (n + ½) T ₂₁ } × π−5

For example, in the case of the holding sealing material according to the present embodiment shown in FIG. 1, since the number n of mat layers excluding the outer layer is 1, it is desirable to satisfy the following expression.
(D + 3T ₂₁ } × π−2L _CV ≦ L ₂₂ ≦ (D + 3T ₂₁ ) × π−5

When L ₂₂ satisfies the above formula, the insertion portion easily passes through the through hole and is inserted into the accommodation portion. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

It is desirable that a slit is formed at the base of the insertion portion 211a. The position and number of slits are not particularly limited. For example, as shown in FIG. 9, slits 213 a and 213 b are formed along the longitudinal direction of the mat 21 at the base of the insertion portion 211 a. With such slits are formed, increasing the holding area by increasing the longitudinal length L ₂ of the mat 21, it becomes easy to insert the insertion portion into the accommodating portion. The length of the slit 213 is desirably 5 to 30 mm.

The length of the insertion portion 211a in the longitudinal direction of the mat 21 is desirably 30 to 100 mm. Moreover, it is desirable that the length of the mat 21 in the housing portion 212a in the longitudinal direction is 30 to 100 mm.

The length of the insertion portion 211a in the direction perpendicular to the longitudinal direction of the mat 21 is preferably 15 to 100 mm. In addition, the length of the accommodation portion 212a in the direction perpendicular to the longitudinal direction of the mat 21 is desirably 30 to 100 mm.
Furthermore, it is desirable that the length of the insertion portion 211a in the direction perpendicular to the longitudinal direction of the mat 21 is equal to the length of the accommodation portion 212a in the direction perpendicular to the longitudinal direction of the mat 21.

The width W _{21 of the} mat 21 is preferably equal to the length in the longitudinal direction of the exhaust gas treating body.
The thickness _{T 21} of the mat 21 is desirably 1.5 to 15 mm.

Next, a method for manufacturing the holding sealing material according to the second embodiment of the present invention will be described.
As a manufacturing method of the holding sealing material according to the second embodiment of the present invention, for example, a preparation step of preparing a mat material containing inorganic fibers, and a gap formed in the mat of the outer layer from the mat material are provided. An insertion portion is formed at a first end portion that has a through hole and is located in the outer layer, and a receiving portion is located at a second end portion that is located in an inner layer than the outer layer. And a punching step of punching the formed mat.

The preparation process of the manufacturing method of the holding sealing material according to the present embodiment is the same as the manufacturing method of the holding sealing material according to the first embodiment of the present invention, but one mat is punched from the mat material in the punching process. Since the aspect at the time is different, it will be described below.

FIG. 13 is a plan view schematically showing a punching pattern when a mat according to the second embodiment of the present invention is punched from the mat material.
A mat material 200 shown in FIG. 13 has an area where a plurality of mats 21 according to the present embodiment can be punched out, similarly to the mat material 100 shown in FIG. The mat material is cut at the solid line portion in FIG.

The through hole 214 and the slit 213 may be formed simultaneously with the punching process or before and after the punching process.
In the case where the through-hole and the slit are formed before and after the punching process, a method of cutting with a cutter after punching only the outer peripheral portion of the mat 21 with a Thomson blade or before the punching process can be mentioned.

Next, the holding sealing material according to the present embodiment obtained by the above method is wound around the exhaust gas treating body to produce a wound body. The method for manufacturing the wound body has been described with reference to FIGS. 10 (a) to 10 (c), and the obtained wound body is illustrated in FIGS. 11 and 12 (a) to 12 (c). ), The description thereof will be omitted here.

The embodiments of the holding sealing material, the manufacturing method of the holding sealing material, the wound body, the manufacturing method of the wound body, the exhaust gas purification device, and the manufacturing method of the exhaust gas purification device other than those described above are described in the present invention. Since it is the same as that of 1st embodiment, the detailed description is abbreviate | omitted.

In the second embodiment of the present invention, the effects (1), (2), (5) to (8), and (11) to (14) described in the first embodiment of the present invention can be exhibited. The following effects can be exhibited.
(15) The holding sealing material according to the present embodiment is composed of one mat. Therefore, even when the holding sealing material is formed with two or more mat layers, it is possible to prevent misalignment between the mats when the exhaust gas treating body wrapped with the holding sealing material is inserted into the casing. .

(16) In the holding sealing material according to this embodiment, the length of the through hole in the direction perpendicular to the longitudinal direction of the mat is within ± 1 mm with respect to the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. is there. When the length of the through hole in the direction perpendicular to the longitudinal direction of the mat is within the above range, the insertion portion can be easily passed through the through hole when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treatment body. . Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

(17) In the holding sealing material according to the present embodiment, the length of the through hole mat in the longitudinal direction is 15 to 40 mm. When the length of the mat of the through hole in the longitudinal direction is within the above range, the insertion portion can be easily passed through the through hole when the holding sealing material is wound around and fixed to the side surface of the exhaust gas treating body. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

(18) In the wound body according to the present embodiment, the holding sealing material is composed of one mat. Therefore, even if it is a wound body in which the layer of two or more mats was formed, when inserting a wound body in a casing, position shift between mats can be prevented.

(19) In the wound body according to the present embodiment, the length of the through hole in the direction perpendicular to the longitudinal direction of the mat is within ± 1 mm with respect to the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. is there.
When the length of the through hole in the direction perpendicular to the longitudinal direction of the mat is within the above range, the insertion portion can be easily passed through the through hole. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

(20) In the wound body according to the present embodiment, the length of the through hole mat in the longitudinal direction is 15 to 40 mm.
When the length in the longitudinal direction of the mat of the through hole is within the above range, the insertion portion can be easily passed through the through hole. Therefore, the holding sealing material can be wound and fixed around the side surface of the exhaust gas treating body without causing wrinkles in the holding sealing material.

(Third embodiment)
Hereinafter, a third embodiment which is an embodiment of the holding sealing material, the wound body, and the exhaust gas purifying apparatus of the present invention will be described.
The holding sealing material according to the third embodiment of the present invention is that, in place of the through hole, a cut portion is formed on each of the first side surface and the second side surface in the direction parallel to the longitudinal direction of the mat. This is different from the second embodiment of the present invention.

First, the holding sealing material according to the third embodiment of the present invention will be described.
FIG. 14 is a perspective view schematically showing an example of the holding sealing material according to the third embodiment of the present invention.
As shown in FIG. 14, the holding sealing material 3 according to the present embodiment includes a mat 31 containing inorganic fibers. The mat 31 is a flat rectangular mat having a predetermined length in the longitudinal direction, a width, and a thickness.

The mat 31 includes a concave first end 311, a convex second end 312, a first side surface 315 in a direction parallel to the longitudinal direction of the mat 31, and a parallel to the longitudinal direction of the mat 31. It has a second side 316 in the direction. Insertion portions 311 a and 311 b are formed at the first end portion 311, and accommodating portions 312 a and 312 b are formed at the second end portion 312. The first side surface 315 is formed with a first cut portion 314a, and the second side surface 316 is formed with a second cut portion 314b.

In the mat 31, the length in the longitudinal direction from the first end 311 not including the insertion portions 311a and 311b to the second end 312 including the accommodating portions 312a and 312b is L ₃ , the width is W ₃₁ , and the thickness is Is _T31 . Further, among L ₃ , the length in the longitudinal direction from the first end 311 not including the insertion portions 311a and 311b to the center of the first cut portion 314a and the second cut portion 314b is L ₃₁ , the longitudinal length of up to the second end portion 312 includes a first cut portion 314a and the second housing portion 312a and 312b from the center of the notch 314b and _{L 32.}

The mat 31 has an inner layer from the second end 312 to the first notch 314a and the second notch 314b, the first notch 314a and the second notch 314b to the first. It is wound around the side surface of the columnar exhaust gas treatment body so that the end portion 311 is an outer layer. That is, the first cut portion 314a and the second cut portion 314b are formed from the inner layer to the outer layer.
Then, the insertion portion 311a is inserted into the accommodation portion 312a through the first cut portion 314a, and the insertion portion 311b is inserted into the accommodation portion 312b through the second cut portion 314b. That is, the insertion portion 311a and the accommodation portion 312a, and the insertion portion 311b and the accommodation portion 312b are shaped so as to fit each other.
The method for winding the mat 31 around the side surface of the columnar exhaust gas treating body will be described in detail in the method for manufacturing a wound body according to the present embodiment described later.

Next, a method for manufacturing a wound body by winding the holding sealing material having the above shape around the exhaust gas treating body will be described.
Fig.15 (a)-FIG.15 (c) are perspective views which show typically an example of the manufacturing method of the wound body which concerns on 3rd embodiment of this invention.
As shown in FIG. 15A to FIG. 15C, the mat 31 shown in FIG. 14 manufactured in the above process is wound around the outer periphery of the exhaust gas treatment body 33.

First, as shown to Fig.15 (a), from the 2nd edge part 312 used as an inner layer to the 1st notch part 314a and the 2nd notch part 314b is wound around the outer periphery of the waste gas processing body 33. FIG. In that case, the 1st cut part 314a and the 2nd cut part 314b are arrange | positioned so that it may straddle an outer layer from an inner layer. That is, when the mat 31 is wound around the outer periphery of the exhaust gas treating body 33, it is overlapped on the mat 31 wound first in the vicinity of the portion where the first cut portion 314a and the second cut portion 314b exist. Wrap. Therefore, the positions of the first cut portion 314 a and the second cut portion 314 b in the wound mat 31 are very close to the accommodating portions 312 a and 312 b formed in the second end 312. And the 1st notch part 314a and the 2nd notch part 314b come to be located diagonally with respect to the outer periphery of the waste gas processing body 33. FIG. Accordingly, a part of the accommodating portions 312a and 312b can be seen through the first cut portion 314a and the second cut portion 314b, and the insertion portions 311a and 311b can be relatively easily inserted.
Next, as shown in FIG. 15 (b), the first cut portion 314 a and the second cut portion 314 b, which are the outer layers, are wound around the outer periphery of the exhaust gas treatment body 33. .

Finally, as shown in FIG. 15C, the insertion portion 311a is inserted into the first cut portion 314a and inserted into the accommodating portion 312a formed in the inner layer, and the insert portion 311b is inserted into the second cut portion. It inserts in the insertion part 314b, and inserts in the accommodating part 312b formed in the inner layer.

Next, the wound body obtained by the above method will be described with reference to FIGS. 16 and 17A to 17C.
FIG. 16 is a perspective view schematically showing an example of a wound body according to the third embodiment of the present invention.
FIG. 17A is a partially enlarged view of a cross section taken along line A ₃ -A _{3 of} the wound body shown in FIG. 16, and FIG. 17B is a view of B ₃ − of the wound body shown in FIG. FIG. 17C is a partially enlarged view of a cross section along line B ₃ , and FIG. 17C is a partially enlarged view of a cross section taken along line C ₃ -C ₃ of the wound body shown in FIG. 16.

As shown in FIG. 16, the wound body 30 according to the present embodiment includes a columnar exhaust gas treatment body 33 and a holding sealing material 3 including a planar rectangular mat 31 containing inorganic fibers, and the exhaust gas treatment body. A mat 31 is wound around the side surface 33.

Next, the insertion portion 311a and the accommodation portion 312a of the mat 31 and the fitting portion in which the insertion portion 311b and the accommodation portion 312b are fitted will be described.
As shown to Fig.17 (a), the 1st notch part 314a is arrange | positioned ranging from an inner layer to an outer layer, and the 1st notch part 314a for the insertion part 311a passes It becomes a void. The insertion portion 311a formed at the first end 311 of the mat 31 constituting the outer layer passes through the first cut portion (gap) 314a and the second portion of the mat 31 constituting the inner layer. It is inserted into the accommodating portion 312 a formed at the end portion 312.

As shown in FIG. 17 (b), the mat 31 circulates around the outer periphery of the exhaust gas treatment body 33 to form an inner layer, passes through the outer side of the second end 312, and passes the outer periphery of the exhaust gas treatment body 33. Further, the outer layer is formed around the circuit.

As shown in FIG. 17 (c), the second cut portion 314b is arranged across the outer layer from the inner layer, so that the second cut portion 314b passes through the insertion portion 311b. It becomes a void. The insertion portion 311b formed at the first end 311 of the mat 31 constituting the outer layer passes through the second cut portion (gap) 314b and the second portion of the mat 31 constituting the inner layer. It is inserted into the accommodating portion 312 b formed at the end portion 312.
As described above, in the wound body 30 according to the present embodiment, the holding sealing material 3 is fixed at two locations, that is, the housing portion 312a into which the insertion portion 311a is inserted and the housing portion 312b into which the insertion portion 311b is inserted. Yes.

Subsequently, the configuration of the holding sealing material other than the above will be described in detail.
The insertion portion 311a, the accommodation portion 312a, and the insertion portion 311b and the accommodation portion 312b are fitted to each other so that the insertion portion 311a, the accommodation portion 312a, and the first notch portion 314a are perpendicular to the longitudinal direction of the mat 31. The lengths in the direction are preferably equal to each other, and the lengths of the insertion portion 311b, the accommodating portion 312b, and the second cutout portion 314b in the direction perpendicular to the longitudinal direction of the mat 31 are preferably equal to each other. In particular, the length of the insertion portion 311a, the accommodation portion 312a, and the first cut portion 314a in the direction perpendicular to the longitudinal direction of the mat 31, and the mat of the insertion portion 311b, the accommodation portion 312b, and the second cut portion 314b. The lengths in the direction perpendicular to the longitudinal direction of 31 are each preferably 15 to 100 mm.

The shape of the 1st notch part 314a and the 2nd notch part 314b will not be specifically limited if it is a magnitude | size which can let the insertion parts 311a and 311b pass.
For example, in the holding sealing material according to the present embodiment shown in FIG. 14, the shapes of the first cut portion 314a and the second cut portion 314b are rectangular. As for the length of the longitudinal direction of the mat 31 of the 1st notch part 314a and the 2nd notch part 314b, it is desirable that it is 15-40 mm. Moreover, it is desirable that the length of the first cut portion 314a and the second cut portion 314b in the direction perpendicular to the longitudinal direction of the mat 31 is 25 to 100 mm. Furthermore, the length of the first cut portion 314a and the second cut portion 314b in the direction perpendicular to the longitudinal direction of the mat 31 is the length of the mat 31 of the first insert portion 311a and the second insert portion 311b. It is desirable to be within ± 1 mm with respect to the length in the direction perpendicular to the direction.

The first notch 314a and the second notch 314b are from the first end 311 not including the inserts 311a and 311b to the center of the first notch 314a and the second notch 314b. longitudinal length _{L 31,} first cut portion 314a and the second cut portion second longitudinal to the end 312 a length _{L 32} that includes a housing portion 312a and 312b from the center of 314b It is desirable to form so as to be equal to each other.

Further, the first cut portion 314a and the second cut portion 314b are positions where the center of the first cut portion 314a and the center of the second cut portion 314b are equal in the longitudinal direction of the mat 31. It is desirable that it is formed.

The length L ₃₂ from the second end portion 312 including the accommodating portions 312a and 312b to the center of the first cut portion 314a and the second cut portion 314b is D for the diameter of the exhaust gas treatment body, and When the thickness is T ₃₁ , the length in the longitudinal direction of the mat 31 of the insertion portions 311a and 311b is L _CC , and the number of mat layers excluding the outer layers is n, it is desirable to satisfy the following formula.
{D + 2 (n + 1/2) T ₃₁ } × π-2L _CC ≦ L ₃₂ ≦ {D + 2 (n + ½) T ₃₁ } × π−5

For example, in the case of the holding sealing material according to the present embodiment shown in FIG. 14, the number n of mat layers excluding the outer layer is 1, and therefore it is desirable to satisfy the following expression.
(D + 3T ₃₁ ) × π−2L _CC ≦ L ₃₂ ≦ (D + 3T ₃₁ ) × π-5

When the length L ₃₂ from the second end 312 including the accommodating portions 312a and 312b to the center of the first notch 314a and the second notch 314b satisfies the above formula, the insert is notched. It passes through the part easily and is inserted into the accommodating part. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

It is desirable that a slit is formed at the base of the insertion portions 311a and 311b. The position and number of slits are not particularly limited. For example, as shown in FIG. 14, slits 313 a and 313 b are formed along the longitudinal direction of the mat 31 at the bases of the insertion portions 311 a and 311 b, respectively. With such slits are formed, increasing the holding area by increasing the longitudinal length L ₃ of the mat 31, it becomes easy to insert the insertion portion into the accommodating portion. The lengths of the slits 313a and 313b are preferably 5 to 30 mm.

Next, a method for manufacturing the holding sealing material according to the third embodiment of the present invention will be described.
The preparation process of the manufacturing method of the holding sealing material according to the present embodiment is the same as the manufacturing method of the holding sealing material according to the first embodiment of the present invention, but one mat is punched from the mat material in the punching process. Since the aspect at the time is different, it will be described below.

FIG. 18 is a plan view schematically showing a punching pattern when a mat according to the third embodiment of the present invention is punched from the mat material.
The mat member 300 shown in FIG. 18 has an area where a plurality of mats 31 according to the present embodiment can be punched out, like the mat member 100 shown in FIG. The mat material is cut at the solid line portion in FIG.

The first cut portion 314a, the second cut portion 314b, and the slits 313a and 313b may be formed simultaneously with the punching process or before and after the punching process.
When producing a notch part and a slit before and after a punching process, after punching only the part used as the perimeter part of mat 31 with a Thomson blade, or before a punching process, the method of cutting with a cutter is mentioned. .

Next, the holding sealing material according to the present embodiment obtained by the above method is wound around the exhaust gas treating body to produce a wound body. The manufacturing method of a wound body is demonstrated using FIG. 15 (a)-FIG.15 (c), and about the obtained wound body, FIG.16 and FIG.17 (a)-FIG.17 (c) ), The description thereof will be omitted here.

The embodiments of the holding sealing material, the manufacturing method of the holding sealing material, the wound body, the manufacturing method of the wound body, the exhaust gas purification device, and the manufacturing method of the exhaust gas purification device other than those described above are described in the present invention. Since it is the same as that of 2nd embodiment, the detailed description is abbreviate | omitted.

In the third embodiment of the present invention, the effects (1), (2), (5) to (8), (11) to (14) described in the first embodiment of the present invention, and the effects of the present invention The effects (15) to (20) described in the second embodiment can be exhibited.

(Fourth embodiment)
Hereinafter, a fourth embodiment which is an embodiment of the holding sealing material, the wound body, and the exhaust gas purification apparatus of the present invention will be described.
The holding sealing material according to the fourth embodiment of the present invention is different from the third embodiment of the present invention in that a cut portion is formed on the first side surface in the direction parallel to the longitudinal direction of the mat.

First, the holding sealing material according to the fourth embodiment of the present invention will be described.
FIG. 19 is a perspective view schematically showing an example of the holding sealing material according to the fourth embodiment of the present invention.
As shown in FIG. 19, the holding sealing material 4 according to this embodiment includes a mat 41 containing inorganic fibers. The mat 41 is a flat rectangular mat having a predetermined length in the longitudinal direction, a width, and a thickness.

The mat 41 has an L-shaped first end portion 411, an L-shaped second end portion 412, and a first side surface 415 in a direction parallel to the longitudinal direction of the mat 41. An insertion portion 411 a is formed at the first end portion 411, and an accommodation portion 412 a is formed at the second end portion 412. Further, an insertion portion 411a is formed on the first side surface 415. A cut portion 414 is further formed on the first side surface 415 where the insertion portion 411a is formed.

In the mat 41, the length in the longitudinal direction from the first end portion 411 not including the insertion portion 411a to the second end portion 412 including the accommodating portion 412a is L ₄ , the width is W ₄₁ , and the thickness is T ₄₁ . To do. In addition, among L ₄ , the length in the longitudinal direction from the first end portion 411 not including the insertion portion 411 a to the center of the cut portion 414 is L ₄₁ , and the length including the accommodating portion 412 a is included from the center of the cut portion 414. the longitudinal length of up to second end 412 and L _42.

The mat 41 is formed on the side surface of the columnar exhaust gas treatment body so that the second end 412 to the cut portion 414 is an inner layer and the cut portion 414 to the first end 411 is an outer layer. Wrapped. That is, the cut portion 414 is formed from the inner layer to the outer layer.
Then, the insertion portion 411a passes through the cut portion 414 and is inserted into the accommodation portion 412a. That is, the insertion part 411a and the accommodation part 412a are shaped to fit each other.
The method for winding the mat 41 around the side surface of the columnar exhaust gas treating body will be described in detail in the method for manufacturing a wound body according to the present embodiment described later.

Next, a method for manufacturing a wound body by winding the holding sealing material having the above shape around the exhaust gas treating body will be described.
FIG. 20A to FIG. 20C are perspective views schematically showing an example of a method for manufacturing a wound body according to the fourth embodiment of the present invention.
As shown in FIGS. 20A to 20C, the mat 41 shown in FIG. 19 manufactured in the above process is wound around the outer periphery of the exhaust gas treatment body 43.

First, as shown to Fig.20 (a), the 2nd edge part 412 used as an inner layer to the notch part 414 is wound around the outer periphery of the waste gas processing body 43. FIG. In that case, the cut | notch part 414 is arrange | positioned so that it may straddle an outer layer from an inner layer. That is, when the mat 41 is wound around the outer periphery of the exhaust gas treating body 43, the mat 41 is wound so as to overlap the mat 41 wound first in the vicinity of the portion where the notch 414 exists. Therefore, the position of the cut portion 414 in the wound mat 41 is very close to the accommodating portion 412a formed in the second end portion 412 and is cut with respect to the outer periphery of the exhaust gas treatment body 43. The insertion part 414 comes to be located diagonally. Therefore, a part of the accommodating part 412a can be seen through the notch part 414, and insertion of the insertion part 411a becomes comparatively easy.
Next, as shown in FIG. 21 (b), the outer layer is wound around the outer periphery of the exhaust gas treating body 43 from the notch 414 serving as the outer layer to the first end 411.

Finally, as shown in FIG. 20 (c), the first insertion portion 411a is inserted into the cut portion 414, and the first accommodation portion 412a formed on the second end portion 412 constituting the inner layer is inserted. insert.

Next, the wound body obtained by the above method will be described with reference to FIGS. 21, 22 (a) and 22 (b).
FIG. 21 is a perspective view schematically showing an example of a wound body according to the fourth embodiment of the present invention.
Figure 22 (a) is a partially enlarged view of _A 4 -A _4-wire cross-section of the wound body shown in FIG. 21, FIG. 22 (b), _{B 4} of the wound body shown in FIG. 21 - it is a partially enlarged view of a B _4-wire cross-section.

As shown in FIG. 21, the wound body 40 according to the present embodiment includes a columnar exhaust gas treatment body 43 and a holding sealing material 4 including a planar rectangular mat 41 containing inorganic fibers, and the exhaust gas treatment body. A mat 41 is wound around the side surface of 43.

Next, the fitting portion in which the insertion portion 411a and the accommodating portion 412a of the mat 41 are fitted will be described.
As shown in FIG. 22 (a), the notch 414 is disposed across the outer layer from the inner layer, so that the notch 414 becomes a gap through which the insertion portion 411a passes. The insertion portion 411a formed in the first end portion 411 of the mat 41 constituting the outer layer passes through the cut portion (gap) 414, and the second end portion 412 of the mat 41 constituting the inner layer. It is inserted in the accommodating part 412a formed in the.

As shown in FIG. 22 (b), the mat 41 circulates around the outer periphery of the exhaust gas treatment body 43 to form an inner layer, passes through the outer side of the second end portion 412, and passes through the outer periphery of the exhaust gas treatment body 43. Further, the outer layer is formed around the circuit.
Thus, in the wound body 40 according to the present embodiment, the holding sealing material 4 is fixed by the accommodating portion 412a in which the insertion portion 411a is inserted.

Subsequently, the configuration of the holding sealing material other than the above will be described in detail.
In order for the insertion portion 411a and the accommodation portion 412a to be fitted to each other, it is desirable that the lengths of the insertion portion 411a, the accommodation portion 412a, and the cutout portion 414 in the direction perpendicular to the longitudinal direction of the mat 41 are equal. In particular, it is desirable that the length of the insertion portion 411a, the accommodation portion 412a, and the cutting portion 414 in the direction perpendicular to the longitudinal direction of the mat 41 is 30 to 150 mm.

The shape of the cut portion 414 is not particularly limited as long as the shape allows the insertion portion 411a to pass therethrough.
For example, in the holding sealing material according to this embodiment shown in FIG. 19, the shape of the cut portion 414 is rectangular. The length of the cut portion 414 in the longitudinal direction of the mat 41 is preferably 15 to 40 mm. The length of the cut portion 414 in the direction perpendicular to the longitudinal direction of the mat 41 is preferably 30 to 150 mm. Furthermore, the length of the cut portion 414 in the direction perpendicular to the longitudinal direction of the mat 41 is preferably within ± 1 mm with respect to the length of the insertion portion 411a in the direction perpendicular to the longitudinal direction of the mat 41.

The notch 414 includes a length L ₄₁ in the longitudinal direction from the first end 411 not including the first insert 411 a to the center of the notch 414, and the accommodating portion 412 a from the center of the notch 414. It is desirable that the length L ₄₂ in the longitudinal direction up to the second end portion 412 to be included is equal.

The length L ₄₁ from the first end 411 not including the first insertion portion 411a to the center of the notch 414 is D for the diameter of the exhaust gas treating body, T _{41 for} the thickness of the mat 41, When the length in the longitudinal direction of the mat 41 of the insertion portion 411a is L _L and the number of mat layers excluding the outer layer is n, it is desirable to satisfy the following expression.
{D + 2 (n + 1/2) T ₄₁ } × π−2L _L ≦ L ₄₁ ≦ {D + 2 (n + ½) T ₄₁ } × π−5

For example, in the case of the holding sealing material according to the present embodiment shown in FIG. 19, the number n of mat layers excluding the outer layer is 1, so it is desirable to satisfy the following expression.
(D + 3T ₄₁ } × π−2L _L ≦ L ₄₁ ≦ (D + 3T ₄₁ ) × π-5

When the length L ₄₁ from the first end portion 411 not including the first insertion portion 411a to the center of the cut portion 414 satisfies the above formula, the insert portion easily passes through the cut portion, and the accommodating portion Inserted into. Therefore, even a holding sealing material having a high bulk density can be more securely wrapped and fixed to the exhaust gas treating body.

It is desirable that a slit is formed at the base of the insertion portion 411a. The position and number of slits are not particularly limited. For example, as shown in FIG. 19, a slit 413 is formed along the longitudinal direction of the mat 41 at the base of the first insertion portion 411 a. With such slits are formed, increasing the holding area by increasing the longitudinal length L ₄ of mat 41, it becomes easy to insert the insertion portion into the accommodating portion. Note that the length of the slit 413 is desirably 5 to 30 mm.

The width W _{41 of the} mat 41 is preferably equal to the length in the longitudinal direction of the exhaust gas treating body, and more desirably 5 to 15 mm shorter than the length in the longitudinal direction of the exhaust gas treating body.
Even if the holding seal material according to the present embodiment has a short length in the longitudinal direction of the exhaust gas treating body, the holding seal material can be wound around the side surface of the exhaust gas treating body and fixed firmly.

Next, a method for manufacturing the holding sealing material according to the fourth embodiment of the present invention will be described.
The preparation process of the manufacturing method of the holding sealing material according to the present embodiment is the same as the manufacturing method of the holding sealing material according to the first embodiment of the present invention, but one mat is punched from the mat material in the punching process. Since the aspect at the time is different, it will be described below.

FIG. 23 is a plan view schematically showing a punching pattern when a mat according to the fourth embodiment of the present invention is punched from the mat material.
A mat member 400 shown in FIG. 23 has an area where a plurality of mats 41 according to the present embodiment can be punched out, like the mat member 100 shown in FIG. The mat material is cut at the solid line portion in FIG.

The cut portion 414 and the slit 413 may be formed simultaneously with the punching process or before and after the punching process.
When producing a notch part and a slit before and after a punching process, after punching only the part used as the perimeter part of mat 41 with a Thomson blade, or before a punching process, the method of cutting with a cutter is mentioned. .

Next, the holding sealing material according to the present embodiment obtained by the above method is wound around the exhaust gas treating body to produce a wound body. The manufacturing method of a wound body is demonstrated using FIG. 20 (a)-FIG.20 (c), and about the obtained wound body, FIG.21, FIG.22 (a) and FIG.22 (b) ), The description thereof will be omitted here.

The embodiments of the holding sealing material, the manufacturing method of the holding sealing material, the wound body, the manufacturing method of the wound body, the exhaust gas purification device, and the manufacturing method of the exhaust gas purification device other than those described above are described in the present invention. Since it is the same as that of 2nd embodiment, the detailed description is abbreviate | omitted.

In the fourth embodiment of the present invention, the effects (1), (2), (5) to (8), (11) to (14) described in the first embodiment of the present invention, and the effects of the present invention The effects (15) to (20) described in the second embodiment can be exhibited, and the following effects can be exhibited.
(21) Since the first end portion and the second end portion of the mat are L-shaped in the holding sealing material according to the present embodiment, even if the length in the longitudinal direction of the exhaust gas treatment body is short The holding sealing material can be wound around the side surface of the exhaust gas treating body and fixed firmly.

(22) Since the wound body according to the present embodiment is a case where the length of the exhaust gas treatment body in the longitudinal direction is short, the first end and the second end of the mat are L-shaped. The holding sealing material can be wound around the side surface of the exhaust gas treating body and fixed firmly.

Hereinafter, the holding sealing material and the wound body according to the first embodiment to the fourth embodiment of the present invention will be summarized.
The holding sealing material according to the first embodiment to the fourth embodiment of the present invention is a holding sealing material that is made of a flat rectangular mat containing inorganic fibers and is used for winding around a side surface of a columnar exhaust gas treatment body. The mat is configured such that two or more layers of the mat are formed when wound around the side surface of the exhaust gas treating body, and the portion located on the outer layer of the mat layer includes One or a plurality of insertion portions are formed to be inserted into the inner layer from the outer layer through the gap formed in the mat of the outer layer from the outer layer, and inside the outer layer. One or a plurality of accommodating portions into which the insertion portion is inserted are formed in the layer portion.

Moreover, the wound body according to the first to fourth embodiments of the present invention includes a columnar exhaust gas treatment body and a holding sealing material made of a planar rectangular mat containing inorganic fibers, and the exhaust gas treatment described above. A wound body in which the mat constituting the holding sealing material is wound around a side surface of the body, wherein the mat is wound around the side surface of the exhaust gas treatment body so that two or more layers of the mat are formed. One or a plurality of insertion portions are formed in a portion located on the outer layer of the mat layer, and one or a plurality of accommodating portions are formed in a portion that is an inner layer than the outer layer. The insertion portion is inserted into the accommodating portion through a gap formed in the mat of the outer layer.

In the first embodiment to the fourth embodiment of the present invention, in the wound body obtained by winding the mat that constitutes the holding sealing material around the exhaust gas treatment body, in the portion located on the outer layer of the mat layer. The insertion portion is formed, and a storage portion is formed in a portion that is an inner layer than the outer layer, and the insertion portion passes through a gap formed in the mat of the outer layer, and the storage portion Has been inserted.

Here, the insertion portion refers to the first insertion portion 111a and the second insertion portions 112a and 112b in the first embodiment (FIGS. 1 and 4) of the present invention, and the second embodiment (FIG. 9 and FIG. 11), the first insertion portions 311a and 311b in the third embodiment (FIGS. 14 and 16) of the present invention, and the insertion portion 411a in the fourth embodiment (FIGS. 19 and 21) of the present invention. That is. That is, the insertion portion serves as a kind of fixing tool used to fix the mat wound around the exhaust gas treating body, but in order to give the insertion portion a function as a fixing tool, A housing part is required. As described above, in the present invention, by inserting this insertion portion into the accommodating portion through the gap, the state of the wound body in which the mat is wound around the exhaust gas treatment body without using other auxiliary tools or the like is obtained. It can be reliably maintained.

In addition, the above-mentioned gap refers to the gaps 14a, 14b and 14c in the first embodiment (FIGS. 1 and 4) of the present invention, the through hole 214 in the second embodiment (FIGS. 9 and 11) of the present invention, the first of the present invention. It is the first cut portion 314a and the second cut portion 314b in the third embodiment (FIGS. 14 and 16), and the cut portion 414 in the fourth embodiment (FIGS. 19 and 21) of the present invention. . That is, the gap is a space formed for inserting the insertion portion into the accommodating portion, and the cut portion and the through hole formed in the holding sealing material serve as the gap, but as in the first embodiment. In addition, by adjusting the length of the holding sealing material, a gap for inserting the insertion portion into the housing portion can be formed.

Furthermore, the above-mentioned housing portion refers to the first housing portions 121a and 121b and the second housing portion 122a in the first embodiment (FIGS. 1 and 4) of the present invention, and the second embodiment (FIGS. 9 and 11) of the present invention. ), The first accommodating portions 312a and 312b in the third embodiment of the present invention (FIGS. 14 and 16), and the accommodating portion 412a in the fourth embodiment of the present invention (FIGS. 19 and 21). It is. That is, the accommodating portion is a space for accommodating the insertion portion, and the size thereof is not particularly limited, but is preferably as close as possible to the shape of the insertion portion to be inserted. This is because the exhaust gas can be prevented from passing through the accommodating portion.

(Example)
Examples in which the embodiments of the present invention are disclosed more specifically are shown below, but the embodiments of the present invention are not limited to these examples.

In Examples 1 and 2, the first embodiment of the present invention shown in FIGS. 1, 4 and 8 will be described more specifically.
Example 1
A substrate mat having a composition ratio of Al ₂ O ₃ : SiO ₂ = 72: 28 was prepared as an alumina fiber substrate mat having an alumina-silica composition. By subjecting this base mat to needle punching treatment, a needle treatment mat having a bulk density of 0.15 g / cm ³ and a basis weight of 1400 g / m ² was produced.

Separately, an acrylic latex emulsion was prepared by sufficiently dispersing acrylic latex in water, and this was used as a binder.

Next, the needle processing mat was cut into a total length of 1100 mm and a width of 1000 mm in plan view. The binder was sprayed uniformly on the cut needle mat using a spray so as to be 1.0% by weight with respect to the amount of alumina fibers of the cut needle treatment mat.

Then, the mat material was produced by carrying out 6 minutes ventilation drying of the needle mat to which the binder was adhered at the temperature of 140 degreeC.

Subsequently, two mats having a shape as shown in FIGS. 2A and 2B were punched from the mat material.
The mat material was punched and slits were formed using a Thomson blade and a hydraulic press.
The dimensions of the two mats punched are such that the length of the first mat in the longitudinal direction is L ₁₁ = 455 mm, the width is W ₁₁ = 104 mm, and the thickness is T ₁₁ = 9.1 mm. The length in the longitudinal direction is L ₁₂ = 305 mm, the width is W ₁₂ = 104 mm, and the thickness is T ₁₂ = 9.1 mm.
The lengths of the first mat and the first insert in the longitudinal direction of the first mat are 60 mm, respectively. Moreover, the length of the longitudinal direction of the 2nd mat | matte of a 1st accommodating part and a 2nd accommodating part is 60 mm, respectively.
The lengths of the first insertion part and the second storage part in the direction perpendicular to the longitudinal direction of the mat are 35 mm, respectively, and the direction perpendicular to the longitudinal direction of the mat of the second insertion part and the first storage part The length of each is 34 mm.

Next, after winding the first mat and the second mat around the exhaust gas treatment body (SiC honeycomb filter) having a diameter of 105 mm and a length of 106 mm, the second insertion portion is inserted into the first accommodation portion, The first insertion part was inserted into the second housing part and fixed.

Finally, the wound body was housed in a casing (inner diameter: 122.2 mm, length: 180 mm) using a press-fitting method to manufacture an exhaust gas purification device.
Table 1 shows the structure of the fitting portion of the wound body and the fixing method of the holding sealing material.

(Fixability when winding)
It was visually evaluated whether or not the holding sealing material was fixed when the holding sealing material was wound around the exhaust gas treatment body and fixed.
Evaluation criteria were evaluated in four stages: ◎: firmly fixed, ◯: fixed, Δ: easy to peel, ×: peeled. The results are shown in Table 2. In Example 1, the evaluation was “◯: fixed”.

(Drift at the time of accommodation)
When the wound body was accommodated in the casing, the degree to which the holding sealing material was displaced was visually evaluated.
The evaluation criteria were evaluated in three stages: ○: no deviation, Δ: easy deviation, x: large deviation occurred. The results are shown in Table 2. In Example 1, the evaluation was “◯: no deviation”.

“Additional organic content at the time of fixation” in Table 2 is an amount (%) showing the content of the organic component as the weight of the entire holding sealing material when the organic component is used as a means for fixing the holding sealing material. ).
When there are many organic components, when the holding sealing material is exposed to a high temperature in the exhaust gas purification apparatus, malodor and toxic gas are generated from the exhaust gas. Accordingly, it is preferable that the content of the organic component is small.
In Example 1, since the organic component was not used as a means for fixing the holding sealing material, this value was 0%.

(Example 2)
In Example 2, a holding seal material, a wound body, and an exhaust gas purification device were produced in the same manner as in Example 1 except that the first mat and the second mat were fixed by sewing with a sewing machine.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

Example 3 shows the second embodiment of the present invention shown in FIGS. 9 and 11 more specifically.
(Example 3)
In Example 3, one mat having a shape as shown in FIG. 9 was punched from the mat material.
The dimension of one mat punched out is such that the length of the mat in the longitudinal direction is L ₃ = 760 mm, the width is W ₃₁ = 104 mm, and the thickness is T ₃₁ = 9.1 mm.
The through hole has a length L ₃₁ = 320 mm in the longitudinal direction from the first end portion not including the insertion portion to the center of the through hole, and the length from the center of the through hole to the second end portion including the accommodating portion. It is provided at a position where the direction length L ₃₂ is 360 mm.
The shape of the through hole is rectangular, the length of the mat in the longitudinal direction is 30 mm, and the length in the direction perpendicular to the longitudinal direction of the mat is 34 mm.
The length of the mat of the insertion portion in the longitudinal direction is 80 mm. Moreover, the length of the longitudinal direction of the mat | matte of an accommodating part is 80 mm.
The length of the insertion portion and the accommodating portion in the direction perpendicular to the longitudinal direction of the mat is 34 mm, and is equal to the length of the through hole in the direction perpendicular to the longitudinal direction of the mat.

Next, after a mat was wound around an exhaust gas treatment body (SiC honeycomb filter) having a diameter of 105 mm and a length of 106 mm, the insertion portion was fixed by being inserted into the accommodation portion through a through hole.
Others were the same as in Example 1, and a holding sealing material, a wound body, and an exhaust gas purification device were produced.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

Example 4 shows the third embodiment of the present invention shown in FIGS. 14 and 16 more specifically.
Example 4
In Example 4, one mat having a shape as shown in FIG. 14 was punched from the mat material.
The dimension of one mat punched out is such that the length of the mat in the longitudinal direction is L ₄ = 760 mm, the width is W ₄₁ = 104 mm, and the thickness is T ₄₁ = 9.1 mm.
The two cut portions are longitudinal lengths from the first end portion not including the insertion portion to the center of the cut portion on the first side surface and the second side surface in the direction parallel to the longitudinal direction of the mat. L ₄₁ = 290 mm, and it is provided at a position where the length L ₄₂ = 320 mm in the longitudinal direction from the center of the cut portion to the second end including the accommodating portion.
The shape of the cut portion is rectangular, the length of the mat in the longitudinal direction is 20 mm, and the length in the direction perpendicular to the longitudinal direction of the mat is 35 mm.
The length of the mat of the insertion portion in the longitudinal direction is 50 mm. Moreover, the length of the longitudinal direction of the mat | matte of an accommodating part is 50 mm.
The length of the insertion portion and the accommodation portion in the direction perpendicular to the longitudinal direction of the mat is 35 mm, which is equal to the length of the cut portion in the direction perpendicular to the longitudinal direction of the mat.

Next, after a mat was wound around an exhaust gas treatment body (SiC honeycomb filter) having a diameter of 105 mm and a length of 106 mm, the insertion portion was fixed by being inserted into the accommodation portion via the cut portion.
Others were the same as in Example 1, and a holding sealing material, a wound body, and an exhaust gas purification device were produced.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

Example 5 shows the fourth embodiment of the present invention shown in FIGS. 19 and 21 more specifically.
(Example 5)
In Example 5, one mat having a shape as shown in FIG. 19 was punched from the mat material.
The dimension of one mat punched out is such that the length of the mat in the longitudinal direction is L ₅ = 760 mm, the width is W ₅₁ = 55 mm, and the thickness is T ₅₁ = 9.1 mm.
The incision portion has a length L in the longitudinal direction from the first end portion not including the insertion portion to the center of the incision portion on the side surface where the insertion portion is formed among the side surfaces in the direction parallel to the longitudinal direction of the mat. ₅₁ = 290 mm, and is provided at a position where the length L ₅₂ in the longitudinal direction from the center of the cut portion to the second end including the accommodating portion is 320 mm.
The shape of the cut portion is rectangular, the length of the mat in the longitudinal direction is 20 mm, and the length in the direction perpendicular to the longitudinal direction of the mat is 27.5 mm.
The length of the mat of the insertion portion in the longitudinal direction is 60 mm. Moreover, the length of the longitudinal direction of the mat | matte of an accommodating part is 27.5 mm.
The length of the insertion portion and the accommodation portion in the direction perpendicular to the longitudinal direction of the mat is 27.5 mm, which is equal to the length of the cut portion in the direction perpendicular to the longitudinal direction of the mat.

Others were the same as in Example 4 to produce a holding sealing material, a wound body, and an exhaust gas purification device.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

(Comparative Example 1)
In Comparative Example 1, two mats were punched from the mat material.
The size of the two mats punched out is such that the length of the mat constituting the inner layer is 355 mm in length, the width is 104 mm, and the thickness is 9.1 mm. The length is 405 mm, the width is 104 mm, and the thickness is 9.1 mm.
The length of the mat in the longitudinal direction of the mat insertion portion constituting the inner layer and the mat insertion portion constituting the outer layer is 80 mm. The lengths of the mat in the longitudinal direction of the mat accommodating portion constituting the inner layer and the mat accommodating portion constituting the outer layer are 60 mm, respectively.
The lengths of the mat insertion portion and the accommodation portion constituting the inner layer and the mat insertion portion and the accommodation portion constituting the outer layer in the direction perpendicular to the longitudinal direction of the mat are 35 mm, respectively.

First, a double-sided tape (Moritoku Co., Ltd., width: 15 mm) is attached to the outer peripheral surfaces of the exhaust gas inflow side and the outflow side of the exhaust gas treatment body for one turn, and then the mat constituting the inner layer is wound, Was inserted into the housing and fixed. Furthermore, after attaching a double-sided tape to the surface of the exhaust gas inflow side and outflow side of the mat that constitutes the inner layer for one round, wrap the mat that constitutes the outer layer, and insert the insertion portion into the accommodation portion And fixed.
Others were the same as in Example 1, and a holding sealing material, a wound body, and an exhaust gas purification device were produced.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

(Comparative Example 2)
After the mat constituting the inner layer and the mat constituting the outer layer are wound around the exhaust gas treatment body without using the double-sided tape, the two mats on the exhaust gas inflow side and the outflow side of the mat constituting the outer layer are wound. A holding sealing material, a wound body, and an exhaust gas purification device were produced in the same manner as in Comparative Example 1, except that a single-sided tape (manufactured by Nichiban Co., Ltd., width: 50 mm) was attached to the surface and fixed.
Table 1 shows the structure of the fitting part of the wound body, the fixing method of the holding sealing material, etc., and Table 2 shows the evaluation results.

As can be seen from the results of Examples 1 to 5 in Table 2, by inserting the insertion portion formed in the outer layer into the accommodating portion formed in the inner layer, the holding sealing material is wound around the exhaust gas treatment body. When fixed, the holding sealing material was firmly fixed. Moreover, when the wound body around which the holding sealing material was wound was accommodated in the casing, the holding sealing material was not displaced. Furthermore, since no tape or the like is used as a means for fixing the holding sealing material, additional organic components in fixing can be suppressed.

Further, as can be seen from the results of Example 2 in Table 2, when the two sealing mats were fixed, the holding sealing material was firmly fixed when the holding sealing material was wound around the exhaust gas treatment body and fixed. .

Furthermore, as can be seen from the results of Examples 4 and 5 in Table 2, the insertion portion formed in the outer layer is inserted into the accommodating portion formed in the inner layer through the cut portion, thereby holding. When the sealing material was wrapped around the exhaust gas treatment body and fixed, the holding sealing material was firmly fixed.

In the holding sealing material, the wound body, and the exhaust gas purification device manufactured in Comparative Example 1, since the double-sided tape is used for fixing the holding sealing material, the holding seal is fixed when the holding sealing material is wound around the exhaust gas processing body and fixed. The material peeled off and could not be fixed. Further, since the holding sealing material could not be fixed by being wound around the exhaust gas treating body, it could not be accommodated in the casing, and the deviation during the accommodation could not be evaluated.
Furthermore, since the double-sided tape is used for fixing the holding sealing material, the additional organic content in fixing increased.

In the holding sealing material, the wound body, and the exhaust gas purification device manufactured in Comparative Example 2, since the single-sided tape is used for fixing the holding sealing material, when the holding sealing material is wound around the exhaust gas processing body and fixed, the holding seal The material was easy to peel off and difficult to fix. Further, the holding sealing material was easily displaced when accommodated in the casing.
Furthermore, since the single-sided tape is used for fixing the holding sealing material, the additional organic component in fixing increased.

(Other embodiments)
The number of mats stacked in the holding sealing material according to the embodiment of the present invention is not limited to two, and three or more mats may be stacked.

In the holding sealing material according to the embodiment of the present invention, the number of insertion portions and accommodation portions is not particularly limited. For example, when the length of the exhaust gas treatment body 53 around which the holding sealing material is wound is long, as shown in FIG. 24, five holding sealing materials 1 according to the first embodiment of the present invention are connected in the width direction. The holding sealing material may have a shape such that eleven insertion portions (511a, 512b, etc.) and eleven receiving portions (522a, 521b, etc.) are formed. Further, the size of the insertion portion and the accommodating portion can be appropriately changed so that the holding seal material can be wound around the exhaust gas treatment body in consideration of the thickness of the exhaust gas treatment body and the holding seal material.
An exhaust gas purification device manufactured by winding such a holding seal material around an exhaust gas treatment body and inserting it into a casing is suitably used for large vehicles such as trucks and trailers or heavy equipment vehicles.

The shape of the exhaust gas treating body constituting the exhaust gas purifying apparatus according to the embodiment of the present invention is not particularly limited as long as it is a columnar shape, in addition to a substantially cylindrical shape, for example, an arbitrary shape such as a substantially elliptical columnar shape or a substantially prismatic shape, It may be of a size.

The exhaust gas treatment body constituting the exhaust gas purification apparatus according to the embodiment of the present invention is made of cordierite or the like, may be an integrally formed honeycomb structure, or made of silicon carbide or the like, It may be a collective honeycomb structure in which a plurality of columnar honeycomb fired bodies in which a large number of through holes are arranged in parallel in the longitudinal direction with partition walls are bundled through an adhesive layer mainly containing ceramics.

A catalyst may be supported on the exhaust gas treating body constituting the exhaust gas purifying apparatus according to the embodiment of the present invention.
Examples of the catalyst supported on the exhaust gas treating body include noble metals such as platinum, palladium and rhodium, alkali metals such as potassium and sodium, alkaline earth metals such as barium, and metal oxides such as cerium oxide. Can be mentioned. These catalysts may be used independently and may use 2 or more types together.

In the exhaust gas purifying apparatus according to the embodiment of the present invention, when the exhaust gas treating body is a honeycomb structure, the end portion of the cell may not be sealed without providing the cell with the sealing material. In this case, the exhaust gas treating body functions as a catalyst carrier that purifies harmful gas components such as CO, HC, or NOx contained in the exhaust gas by supporting a catalyst such as platinum.

The holding sealing material of the present invention is a holding sealing material made of a flat rectangular mat containing inorganic fibers and used for winding around a side surface of a columnar exhaust gas treating body, wherein the mat is the exhaust gas treating body. Two or more layers of the mat are formed when wound on the side surface, and the portion located on the outer layer of the mat layer is changed from the outer layer to the mat of the outer layer. One or a plurality of insertion portions to be inserted into the inner layer than the outer layer are formed through the formed gap, and the insertion portion is formed in a portion that becomes an inner layer than the outer layer. It is an essential component that one or a plurality of accommodating portions to be inserted are formed.
The wound body of the present invention includes a columnar exhaust gas treatment body and a holding sealing material made of a flat rectangular mat containing inorganic fibers, and constitutes the holding sealing material on a side surface of the exhaust gas treatment body. A wound body around which the mat is wound, wherein the mat is wound around a side surface of the exhaust gas treatment body so that two or more layers of the mat are formed, and is wound around a layer outside the mat layer. One or a plurality of insertion portions are formed in the located portion, and one or a plurality of accommodating portions are formed in a portion which is a layer on the inner side of the outer layer, and the insertion portion is formed on the outer layer. It is an indispensable constituent element to be inserted into the housing portion through a gap formed in the mat.
In the exhaust gas purifying apparatus of the present invention, the exhaust gas treatment body includes a columnar exhaust gas treatment body, a casing that houses the exhaust gas treatment body, and a holding sealing material that includes a planar rectangular mat containing inorganic fibers. An exhaust gas purifying apparatus comprising a wound body around which the mat constituting the holding sealing material is wound on a side surface of the exhaust gas treatment apparatus, wherein the mat includes the exhaust gas treatment so that two or more layers of the mat are formed. One or a plurality of insertion portions are formed in a portion that is wound around a side surface of the body and is positioned on an outer layer of the mat layer, and one or a plurality of insertion portions are formed in a portion that is an inner layer than the outer layer. It is an essential component that the insertion portion is inserted into the accommodation portion through a gap formed in the mat of the outer layer.
The essential components include various configurations detailed in the first embodiment to the fourth embodiment of the present invention and other embodiments of the present invention (for example, the number of mats to be stacked, the shape of the exhaust gas treatment body). Etc.) can be combined as appropriate to achieve the desired effect.

1, 2, 3, 4 Holding sealing material 10, 20, 30, 40 Winding body 11, 12, 21, 31, 41 Mat (first mat, second mat)
13, 23, 33, 43, 53 Exhaust gas treatment bodies 14a, 14b, 14c Gap 57 Casing 111, 121, 211, 311, 411 First end portions 111a, 112a, 112b, 211a, 311a, 311b, 411a, 511a, 512b Insertion part (first insertion part, second insertion part)
112, 122, 212, 312, 412 Second end portion 121a, 121b, 122a, 212a, 312a, 312b, 412a, 521b, 522a receiving portion (first receiving portion, second receiving portion)
214 Through hole (void)
314a, 314b, 414 notch (gap)
500 Exhaust gas purification device

Claims (17)

It consists of a flat rectangular mat containing inorganic fibers, and is a holding sealing material used for applications wrapped around the side surface of a columnar exhaust gas treatment body,
The mat is configured such that two or more layers of the mat are formed when wound around a side surface of the exhaust gas treating body,
The portion located in the outer layer of the mat layer is inserted into the inner layer from the outer layer through the void formed in the outer layer mat from the outer layer. A plurality of insertion portions are formed,
One or a plurality of accommodating portions into which the insertion portion is inserted are formed in a portion that is an inner layer with respect to the outer layer. The holding sealing material comprises at least two mats,
In the first mat constituting the outer layer, the first insertion portion is formed at the first end portion, and the second insertion portion is formed at the second end portion,
A first mating portion into which the second insertion portion is inserted is formed in the second mat that constitutes a layer inside the outer layer, and the first insertion portion is inserted into the second mat. The holding sealing material according to claim 1, wherein the holding sealing material is configured to form a second accommodating portion. The holding sealing material according to claim 2, wherein the first mat and the second mat are fixed to each other at least partially. The holding sealing material consists of one mat,
The mat has a through hole or a cut portion that becomes a void formed in the mat of the outer layer when wound around the side surface of the exhaust gas treating body,
An insertion portion is formed at the first end located in the outer layer, and a receiving portion is formed at the second end located in the inner layer than the outer layer,
The holding sealing material according to claim 1, wherein the insertion portion is configured to be inserted into the housing portion through the through hole or the cut portion. 5. The length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is within ± 1 mm with respect to the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. The holding sealing material according to 1. The holding sealing material according to claim 4 or 5, wherein a length of the mat in the longitudinal direction of the through hole or the cut portion is 15 to 40 mm. The holding sealing material according to any one of claims 1 to 6, wherein a length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm. The holding sealing material according to any one of claims 1 to 7, wherein the holding sealing material has a slit formed on an outer surface of the mat located in the outer layer. A columnar exhaust gas treatment body;
It is composed of a holding sealing material made of a flat rectangular mat containing inorganic fibers,
A wound body in which the mat constituting the holding sealing material is wound around a side surface of the exhaust gas treating body,
The mat is wound around the side surface of the exhaust gas treating body so that two or more layers of the mat are formed,
In the portion located in the outer layer of the mat layer, one or a plurality of insertion portions are formed,
In the portion that becomes the inner layer than the outer layer, one or a plurality of accommodating portions are formed,
The wound body, wherein the insertion portion is inserted into the housing portion through a gap formed in the mat of the outer layer. The holding sealing material comprises at least two mats,
In the first mat constituting the outer layer, the first insertion portion is formed at the first end portion, and the second insertion portion is formed at the second end portion,
A first mating portion into which the second insertion portion is inserted is formed in the second mat that constitutes a layer inside the outer layer, and the first insertion portion is inserted into the second mat. A second housing is formed,
The first insertion portion is inserted into the second accommodating portion through a gap formed in the first mat,
The wound body according to claim 9, wherein the second insertion portion is inserted into the first accommodation portion through a gap formed in the first mat. The wound body according to claim 10, wherein the first mat and the second mat are fixed to each other at least partially. The holding sealing material consists of one mat,
The mat has a through-hole or a cut portion that becomes a gap formed in the mat of the outer layer,
An insertion portion is formed at the first end located in the outer layer, and a receiving portion is formed at the second end located in the inner layer than the outer layer,
The wound body according to claim 9, wherein the insertion portion is inserted into the housing portion through the through hole or the cut portion. The length of the through hole or the cut portion in the direction perpendicular to the longitudinal direction of the mat is within ± 1 mm with respect to the length of the insertion portion in the direction perpendicular to the longitudinal direction of the mat. The wound body as described in 2. The wound body according to claim 12 or 13, wherein a length of the mat in the longitudinal direction of the through hole or the cut portion is 15 to 40 mm. The wound body according to any one of claims 9 to 14, wherein a length of the mat in the longitudinal direction of the insertion portion inserted into the housing portion is 10 to 100 mm. The wound body according to any one of claims 9 to 15, wherein the holding sealing material has a slit formed on an outer surface of the mat located in the outer layer. A columnar exhaust gas treatment body;
A casing for housing the exhaust gas treating body;
It is composed of a holding sealing material made of a flat rectangular mat containing inorganic fibers,
An exhaust gas purifying apparatus comprising a wound body around which the mat constituting the holding sealing material is wound around a side surface of the exhaust gas treatment body,
The mat is wound around the side surface of the exhaust gas treating body so that two or more layers of the mat are formed,
In the portion located in the outer layer of the mat layer, one or a plurality of insertion portions are formed,
In the portion that becomes the inner layer than the outer layer, one or a plurality of accommodating portions are formed,
The exhaust gas purification apparatus according to claim 1, wherein the insertion portion is inserted into the housing portion through a gap formed in the mat of the outer layer.

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