CN1912361A - Holding seal member, exhaust gas purification apparatus, jig and method for manufacturing holding seal member - Google Patents
Holding seal member, exhaust gas purification apparatus, jig and method for manufacturing holding seal member Download PDFInfo
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- CN1912361A CN1912361A CN 200610074518 CN200610074518A CN1912361A CN 1912361 A CN1912361 A CN 1912361A CN 200610074518 CN200610074518 CN 200610074518 CN 200610074518 A CN200610074518 A CN 200610074518A CN 1912361 A CN1912361 A CN 1912361A
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Abstract
A chamfered holding seal member (14) has an end (14m) includinq an inclined surface (14f). When the holding seal member, which is for winding around an exhaust gas purifier body (21) , is inserted into a tubular shell (23), the holding seat member elastically deforms and the inclined surface becomes substantially flush with an inlet end face of the exhaust gas purifier body.
Description
Technical field
The present invention relates to be used for covering the manufacture method of anchor clamps and this maintenance Sealing of the maintenance Sealing of the peripheral surface of the exhaust gas purification body that is contained in metal shell, the exhaust gas purification apparatus that adopts this maintenance Sealing, this maintenance Sealing that is used to cut sth. askew.
Background technique
Be used for being usually located at the middle part of exhaust passage in the vehicle at the exhaust gas treatment device that vehicle uses.As the example of exhaust gas treatment device, known in the prior art have diesel particulate filter (DPF) and an exhaust emission control catalyst converter of removing the graphite granule that is called particulate.Typical exhaust gas treatment device comprises the exhaust gas purification body, surrounds the metal tube (shell) of this exhaust gas purification body and the maintenance Sealing of filling gap between this exhaust gas purification body and the metal tube.
Keep Sealing to have and prevent the function that the exhaust gas purification body damages owing to Vehicular vibration collision metal tube the time.Keep Sealing also must have the function that prevents that the exhaust gas purification body from coming off or moving from metal tube when standing exhaust pressure metal tube.In addition, keep Sealing must prevent that exhaust is from the clearance leakage between metal tube and the exhaust gas purification body.
Fig. 1 represents traditional maintenance Sealing 14p.Fig. 2 represents to adopt the exhaust gas treatment device of this traditional maintenance Sealing 14p.Having uniform thickness and flexible fiber cushion 16 by cutting forms and keeps Sealing 14p.Keep Sealing 14p be wrapped in exhaust gas purification body 21 peripheral surface around.The exhaust gas purification body 21 that keeps Sealing 14p to be twined is pressed in the tubular metal shell 23.So just be assembled into exhaust gas treatment device (referring to JP-A-2001-316965).
The exhaust purifier style is catalyst carrier in this way.Catalytic activity depends on temperature.Fiber cushion must be adiabatic to guarantee beginning to make catalyzer that enough reactivities are arranged from initial user mode.The material of fiber cushion for example is the inorfil such as alumina fibre.JP-A-2003-20938 discloses a kind of maintenance Sealing, and hold facility under its heat resistent property, the high temperature and weather-proof property all are improved.This maintenance Sealing is made by the inorfil with the mullitization rate through adjusting.
In the time will keeping Sealing 14p and exhaust gas purification body 21 to be pressed in the shell 23, thereby shearing action makes maintenance Sealing 14p distortion on internal surface 14n that keeps Sealing 14p and outer surface 14j.As shown in Figure 3, protruding 14k stretches out from the maintenance Sealing 14p of distortion.Projection 14k has sharp-pointed summit between outer surface 14j that keeps Sealing 14p and end face 14d.The direction that the angle of the protruding 14k relative with sharp-pointed summit is faced keeps the direction of Sealing 14p and exhaust gas purification body 21 opposite with extruding.
Even keep Sealing to improve weather-proof property, the sharp-pointed summit of protruding 14k also is easy to be deflated corrosion and therefore is easy to fracture.The inorfil that discharges from the protruding 14k that ruptures can enter exhaust gas purification body 21 and block exhaust gas purification body 21.
Recently the improvement of engine performance has caused increasing the trend of exhaust pressure.Therefore, even under high exhaust pressure, also will keep Sealing 14p to be wrapped in the whole peripheral surface of exhaust gas purification body 21 on every side to continue to keep exhaust gas purification body 21.This has caused so new near problem, promptly is easy to generate protruding 14k, blocks the exhaust gas purification body thereby cause.
In addition, if, then can damage exhaust gas purification body 21 and shell 23 keeping Sealing 14p to cut protruding 14k after being pressed in the shell 23.Therefore, be not desirably in maintenance Sealing 14p is pressed in the shell 23 after cutting keep Sealing 14p.
Summary of the invention
One aspect of the present invention is a kind of maintenance Sealing, be used for being wrapped in the exhaust gas purification body around and this exhaust gas purification body is remained on tube-like envelope, this exhaust gas purification body has inlet that enters for exhaust and the outlet of discharging for exhaust.This maintenance Sealing comprises first surface, is used for contacting with described exhaust gas purification body during using described maintenance Sealing.Second surface, be used for described maintenance Sealing is wrapped in described exhaust gas purification body around the time and described housing contacts.Beveled end is arranged on during using described maintenance Sealing near the described inlet of described exhaust gas purification body.This beveled end comprises the inclined-plane that tilts with respect to described at least second surface when not using described maintenance Sealing.
Another aspect of the present invention is a kind of exhaust gas purification apparatus, and it is provided with the exhaust gas purification body, and this exhaust gas purification body comprises the inlet that is used to receive exhaust, outlet and the peripheral surface that is used to discharge exhaust.Keep Sealing to comprise first surface, second surface and beveled end, this beveled end has between second surface and first surface the inclined-plane that tilts with respect to second surface at least.Described maintenance Sealing be wrapped in described exhaust gas purification body around, the first surface of described maintenance Sealing is contacted with the peripheral surface of described exhaust gas purification body.The inlet of the contiguous described exhaust gas purification body of the beveled end of described maintenance Sealing.Tube-like envelope holds described exhaust gas purification body.The two all contacts described maintenance Sealing and described exhaust gas purification body and described tube-like envelope.
Another aspect of the present invention is a kind of tabular maintenance Sealing, uses with the exhaust gas purification body with the inlet that enters for exhaust.This maintenance Sealing has a homogeneous thickness and an inclined-plane, and during using described maintenance Sealing, the inlet of this inclined-plane and described exhaust gas purification body tilts explicitly.
Another aspect of the present invention is a kind of anchor clamps of cutting sth. askew, and it uses make keeping Sealing with plane blade, this maintenances Sealing be used for being wrapped in the exhaust gas purification body around also this exhaust gas purification body is remained on tube-like envelope.Described maintenance Sealing is tabular and comprises side and bottom surface.The described anchor clamps of cutting sth. askew comprise: housing, it has and is used for respectively the sidewall and the diapire that contact with the bottom surface with the side of described maintenance Sealing.Described housing comprises the recess that is limited by described sidewall and diapire.One lid covers the recess of described housing.Described recess and described lid define the accommodating chamber that is used to hold described maintenance Sealing.Described lid has the slit of lid, is used for forming chamfered portion in an edge of the described maintenance Sealing that is contained in described recess.This slit is suitable for receiving described plane blade and guides moving of this plane blade.
Another aspect of the present invention is a kind of anchor clamps of cutting sth. askew, it uses to make with plane blade and keeps Sealing, this maintenance Sealing be used for being wrapped in the exhaust gas purification body around so that this exhaust gas purification body is remained on tube-like envelope, wherein said maintenance Sealing is tabular and comprises side and bottom surface.The described anchor clamps of cutting sth. askew comprise: housing, it has respectively sidewall and the diapire that contacts with the bottom surface with the side of described maintenance Sealing.Described housing comprises the recess that is limited by described sidewall and diapire.Described housing comprises the housing slit, is used for forming chamfered portion and guide described plane blade to move on an edge of the described maintenance Sealing that is contained in described recess.
Another aspect of the present invention is a kind of method that keeps Sealing that is used to make.This method comprises the cutting inorganic fiber mat to form the step of plate-like articles, and these article comprise side, bottom surface, first and second surfaces, end face and the edge between described second surface and described end face.This method comprises that also the location comprises the anchor clamps of cutting sth. askew of the housing with sidewall and diapire, and to contact with the bottom surface with the side of described plate-like articles respectively, wherein said sidewall and diapire define the recess that holds described plate-like articles in described housing.This method also comprises with the lid covering shell with slit, insert plane blade by this slit, thereby and move described plane blade along described slit and form the maintenance Sealing with the edge between the described end face with the described second surface of cutting sth. askew at described plate-like articles.
In one embodiment, described inclined-plane is with respect to the angle tilt of described second surface with 105 to 150 degree.
In one embodiment, described inclined-plane is with respect to the angle tilt of described second surface with 130 to 140 degree.
In one embodiment, the contiguous described second surface in described inclined-plane.
In one embodiment, described beveled end comprises a described inclined-plane and an end face, this end face and described first surface quadrature and between described inclined-plane and described first surface, and described inclined-plane extends between described end face and described second surface.
In one embodiment, described maintenance Sealing is an inorganic fiberboard.In one embodiment, described plate is that acupuncture becomes.In one embodiment, described inorfil is the alumina silica fiber.In one embodiment, described inorfil has 6 μ m or bigger fiber diameter.In one embodiment, described plate comprises organic bond.
In one embodiment, described exhaust gas purification body is to be loaded with the catalyst carrier of the catalyzer that is used for purifying exhaust gas or from the exhaust-gas purifying filter of exhaust gas collection particulate.
In one embodiment, described maintenance Sealing resiliently deformable between described exhaust gas purification body and described tube-like envelope.
In one embodiment, the sidewall of the described recess in the described housing and at least one in the diapire have the housing slit that is used to receive described plane blade, and wherein said housing slit and described lid slit are located along same level.
In one embodiment, described housing slit is formed in the sidewall of described recess.
In one embodiment, described lid can separate with described housing.
In one embodiment, described maintenance Sealing has a thickness, and described inclined-plane connects the position on described second surface and the described end face, and this position is than the more close described first surface of the mid point of the described thickness of described maintenance Sealing.
In one embodiment, described lid slit is with respect to the angle tilt of described end face with 30 to 75 degree.
In one embodiment, described plane blade comprises intermediate portion and far-end, and described housing slit comprises the slit that is formed in the described sidewall with the slit of the intermediate portion that guides described plane blade and is formed on the far-end that is used to receive described plane blade in the described diapire.
In one embodiment, the step of described plane of motion blade comprises that formation connects the second surface of described maintenance Sealing and the inclined-plane of end face.
From below in conjunction with understanding other aspects and advantages of the present invention the description of accompanying drawing, accompanying drawing shows principle of the present invention in the mode of example.
Description of drawings
To understand the present invention and purpose and advantage by reference better to the following description and the accompanying drawing of currently preferred embodiment, in the accompanying drawings:
Fig. 1 is the stereogram of the maintenance Sealing of expression prior art;
Fig. 2 is the sectional view of the exhaust gas purification apparatus of the expression maintenance Sealing that adopts prior art;
Fig. 3 is the local amplification view of the exhaust gas purification apparatus shown in the presentation graphs 2;
Fig. 4 A, 4B and 4C are respectively planimetric map, rear view and the side views of representing to keep according to the preferred embodiment of the invention Sealing;
Fig. 5 A is the partial enlarged drawing of the maintenance Sealing of presentation graphs 4C;
Fig. 5 B is the modification of the maintenance Sealing shown in Fig. 5 A;
Fig. 6 A and 6B are the local amplification views of the exhaust gas purification apparatus of the expression maintenance Sealing that adopts preferred embodiment;
Fig. 7 is the stereogram of the anchor clamps of cutting sth. askew of the expression maintenance Sealing that is used to make preferred embodiment;
Fig. 8 is the planimetric map of the anchor clamps of cutting sth. askew of presentation graphs 7;
Fig. 9 A is illustrated in after inorganic fiber mat cuts out but by the stereogram of the maintenance Sealing before cutting sth. askew;
Fig. 9 B is that the line 9B-9B in Fig. 8 cuts open the sectional view of getting;
Fig. 9 C is the partial enlarged drawing of Fig. 9 B;
Figure 10 represents the stereogram of the anchor clamps of cutting sth. askew of Fig. 7 during use;
Figure 11 is that the line 11-11 in Figure 10 cuts open the sectional view of getting;
Figure 12 is local excision's stereogram of the exhaust gas purification apparatus of the expression maintenance Sealing that adopts preferred embodiment; And
Figure 13 to Figure 15 is cut sth. askew other embodiment's the sectional view of anchor clamps of expression.
Embodiment
Describe according to the preferred embodiment of the invention, be used for the maintenance Sealing of exhaust gas purification body below with reference to accompanying drawings.
Shown in Fig. 4 A to Fig. 4 C, smooth and thickness keeps Sealing (retainer plate) 14 to have internal surface (first surface) 14n and outer surface (second surface) 14j uniformly.Keep Sealing 14 preferably to make by inorfil.Keep a side margin (top edge as shown in Fig. 4 A) of Sealing 14 to be cut sth. askew.Shown in Fig. 5 A, remove the edge 14c (dotting) between second surface 14j and the end face 14d.In the following description, will keep the end that removes edge 14c of Sealing 14 to be called chamfered portion 14m.Chamfered portion 14m comprises inclined-plane 14f.Edge 14c to be removed has and the corresponding size and dimension of at least a portion of protruding 14k, and this projection 14k is the (see figure 2) that forms when being pressed into traditional maintenance Sealing in the shell 23.In other words, keeping Sealing 14 is the Sealings that obtain by at least a portion that removes traditional protruding 14k.
As shown in figure 12, with keep Sealing 14 be wrapped in exhaust gas purification body 21 around.The length of maintenance Sealing 14 or corresponding with the circumferential length of exhaust gas purification body 21 along the horizontal size of Fig. 4 A.The width of maintenance Sealing 14 or corresponding with the longitudinal length of exhaust gas purification body 21 along the size of Fig. 4 A Vertical direction.The exhaust gas purification body 21 that keeps Sealing 14 to be twined is pressed in the shell 23.The direction that chamfered portion 14m faced is opposite with the direction (as shown by arrows) that exhaust gas purification body 21 is pressed in the shell 23.In one example, the direction that is pressed into exhaust gas purification body 21 is identical with the direction that exhaust flows in the exhaust purifier body 21.
Cut out maintenance Sealing 14 (see figure 1)s from the uniform inorganic fiber mat 16 of thickness.Keeping forming chamfered portion 14m on the Sealing 14 then.Inorganic fiber mat 16 has uniform elasticity (rebound elasticity).The preferred exemplary of inorganic fiber mat 16 is felted terxture or nonwovens.
The lamination coating that can be used for inorganic fiber mat 16 for example is a ceramic fiber, for example alumina fibre, alumina silica fiber, silicon dioxide fibre and glass fibre.The alumina silica fiber is because of anti-contact pressure and weather-proof property under their the high heat resistent property, high temperature but preferred.According to type that keeps Sealing and the fiber diameter that weather-proof property is determined lamination coating.For example, scatter from keeping Sealing 14, preferably have the crude fiber of 6 μ m or bigger fiber diameter in order to prevent inorfil.Inorganic fiber mat 16 can comprise the organic bond of the water-soluble resin of acrylic resin for example or polyvinyl alcohol, and the perhaps latex of acrylic rubber or nitrile butadiene rubber for example is so that inorganic fiber mat 16 had predetermined thickness and repulsion before cutting.
The example of the method that is used to make inorganic fiber mat is described below.In this example, use the alumina silica fiber as inorfil.At first step, the aqueous solution that Ludox is added to basic aluminium chloride is to form the precursor of alumina fibre.Aluminium content in the aqueous solution of basic aluminium chloride is 75g/L, and the atomic ratio of Al/Cl is 1.8.The relative scale that the Ludox amount of adding is adjusted into the aluminium oxide that makes in the alumina fibre and silica is for from 60: 40 to 80: 20, and is preferably from 70: 30 to 74: 26.As long as relative scale is in above-mentioned scope, then the ratio of the mullite that is formed by aluminium oxide and silica is enough to realize low thermal conductivity and enough adiabaticitys.
Then, add for example organic polymer of polyvinyl alcohol, and concentrated resultant is with the preparation spinning solution to the precursor of alumina fibre.Form fiber by blowing method by spinning solution.Blowing method is a kind of like this method, wherein by using the air that blows out from blast nozzle and forming fiber from the spinning solution that the spinning solution supply nozzle is extruded.
Blowing method is preferably designed so that and makes that air stream and spinning solution stream is parallel to each other, and air stream with it is carried out sufficient rectification before spinning solution contacts.In this case, the diameter of spinning-nozzle typically is from 0.1 to 0.5mm, and typically is 1 to 120mL/h from the spinning solution amount that a supply nozzle is extruded, and is preferably 3 to 50mL/h.Gas flow rate from every slit of air nozzle typically is 40 to 200m/s.By such optimization spinning condition, can under the situation of not spraying (atomizing), will be drawn into sufficiently long fiber from the spinning solution that the spinning solution supply nozzle is extruded, and thereby the fiber that forms can not fuse together.Therefore, can obtain the even alumina fibre that variation in fiber diameter reduces.
The average fiber length of alumina fibre is 250 μ m or bigger, is preferably 500 μ m or bigger.As long as average fiber length is 250 μ m or bigger, then fiber will fully twine to provide intensity to be enough to and be wrapped in catalyst carrier maintenance Sealing 14 on every side tightly.
Thereby make the alumina fibre stratified sedimentation that obtains from the alumina fiber precursor spinning make the alumina fibre veneer.According to the type and the type of exhaust gas purification body 21 and the thickness that volume density is set this veneer on demand that keep Sealing 14.The alumina fibre veneer preferably stands acupuncture (needle punching).Acupuncture has reduced the thickness of veneer so that it is easy to processing, and make the fiber in the veneer different layers twine more firmly.Acupuncture preferably by along with veneer in layer between the interface direction of intersecting insert each pin and carry out.
Below acupuncture will be described.On the veneer of alumina fibre, place the needle plate that has with even spaced apart a plurality of holes.In one example, the hole of this needle plate is with 500 every 100cm in hole
2Density arrange.At room temperature the hole by needle plate inserts a needle in the veneer of alumina fibre.Under 1250 ℃ maximum temperature, the veneer heating is also toasted continuously then, to obtain to have the alumina fibre laminated continuous sheet of per unit area predetermined weight.
Cutting alumina fibre laminated continuous sheet is so that it is easy to processing.During this cutting, should be specifically noted that the content that in the alumina fibre laminated continuous sheet, comprises, be called the ball-aluminium oxide powder of " solids (shot) ".This solids is to generate in the blowing process of using spinning solution.If laminated continuous sheet comprises 7% or more solids, then alumina fibre with 0.2 to 0.55g/cm
3Volume density (GBD) be easy to when compressing damage.The maintenance Sealing that comprises the alumina fibre of damage is tending towards causing fiber dispersion when the assembling catalyst converter.
Subsequently, on the laminated continuous sheet of cutting, apply organic bond.Organic bond has made things convenient for and has been assembled to the exhaust passage.In addition, at next step, with the concave-convex shape pattern transfer to the surface of organic bond layer.Organic bond for example comprises acrylate rubber (ACM), nitrile butadiene rubber (NBR) or styrene butadiene rubber (SBR) resin.Below applying of organic bond will be described.At first step, generate the aqueous dispersion that comprises organic bond and water.Aqueous dispersion is watered on the laminated continuous sheet that transmits on the conveyer.Remove any too much resin (solid content) and the moisture that in veneer, absorbs by suction.
Remove moisture by hot compression and drying.By using two pressure plates to carry out described compression, these two pressure plates all have the surface that has predetermined concave-convex shape pattern.The alumina fibre veneer is compressed between these two pressure plates.Remove excess moisture so also simultaneously with the both sides of concave-convex shape pattern transfer to the alumina fibre veneer.This compression process has reduced the bulkiness of alumina fibre veneer so that handle.In addition, when being exposed to exhaust during use, organic bond dissipates and compressed alumina fibre veneer returns to original bulkiness.Therefore, maintenance Sealing 14 keeps exhaust gas purification bodies 21 and it is remained in the shell 23 more firmly.
Subsequently, make alumina fibre veneer drying at 95 to 155 ℃.As long as drying temperature is in 95 ℃ to 155 ℃ scope, just can make veneer bone dry and organic bond is decomposed at short notice, and productivity can variation yet.Preferably carry out described drying and reach 100 seconds or longer, so that the alumina fibre veneer is fully dry.Can during drying compress the alumina fibre veneer.Preferably, compression alumina fibre veneer in 4 to 15mm space.Reduce effect as long as the space in 4 to 15mm scope, just obtains above-mentioned volume, and can not damage alumina fibre.So just finished the manufacturing of inorganic fiber mat 16.
Cut inorganic fiber mat 16 to obtain the maintenance Sealing 14r shown in Fig. 9 A by using punch die to wait then.Under this state, inorganic fiber mat 16 is not also cut sth. askew.
Below chamfered portion 14m will be described.Shown in Fig. 5 A, inclined-plane 14f is in the face of exhaust entrance.Inclined-plane 14f be keep Sealing 14 with exhaust gas purification body 21 first surface in contact 14n and with second surface 14j that the interior perimeter surface 23a of shell contacts between part surface at least.Preferably, inclined-plane 14f keeps the position of the more close first surface 14n of thickness mid point T2 of Sealing 14 to be connected with the ratio of end face 14d second surface 14j.Most preferably, shown in Fig. 5 B, inclined-plane 14f connects second surface 14j and first surface 14n.
In the following description, the angle θ 3 that will form between inclined-plane 14f and second surface 14j is also referred to as the angle of angle of chamfer or inclined-plane 14f.Angle θ 3 is preferably 105 to 150 degree, more preferably is 130 to 140 degree, is most preferably 135 degree.When angle θ 3 is 105 to 150 when spending, the size with the protruding 14k (Fig. 2) on sharp-pointed summit reduces or does not form at all.This has guaranteed to keep Sealing 14 to keep the ability of exhaust gas purification body 21.And, prevented the obstruction of exhaust gas purification body 21 effectively.In addition, owing to keep Sealing 14 to keep the ability of exhaust gas purification body 21 not reduce, when therefore having prevented in being pressed into shell, stretch out thereby keep Sealing 14 to move from the end face of exhaust gas purification body 21 with respect to exhaust gas purification body 21.The angle θ 4 that forms between inclined-plane 14f and end face 14d is preferably 30 to 75 degree, more preferably is 40 to 50 degree, is most preferably 45 degree.For example, when angle θ 4 is 30 when spending, angle θ 1 is set at 60 degree and angle θ 2 is set at 150 degree.
The manufacturing that keeps Sealing 14 will be discussed below, be specially the formation of chamfered portion 14m.By using the anchor clamps 11 of cutting sth. askew shown in Fig. 7 to Figure 11 to form chamfered portion 14m.The anchor clamps 11 of cutting sth. askew comprise that housing 12 with recess 12a and the end face that is installed in housing 12 are to cover the lid 13 of recess 12a.When covering 13 when being installed on the housing 12, lid 13 and recess 12a define the accommodating chamber that is used to hold the maintenance Sealing 14r that is not also cut sth. askew.
Shown in Fig. 9 C, the sidewall 12b of housing 12 comprises the sidewall 12e facing to the end face 14d of unchamfered maintenance Sealing 14r.In sidewall 12e, form the narrow groove or the second slit 12f.The second slit 12f tilts with angle θ 2 with respect to sidewall 12e.The second slit 12f preferably is in sidewall 12e split shed in the position of the degree of depth mid point T1 that is lower than recess 12a.More preferably, the boundary opening of the second slit 12f between sidewall 12e and bottom 12c.In this case, under the situation that does not reduce the width that keeps Sealing 14, form inclined-plane 14f.
From the angle of aiming at, preferably cover the identical of 13 external shape and housing 12.According to lid 13 material with keep the size of Sealing 14 to set covering 13 thickness.
The elongated open or the first slit 13c extend through to lower surface 13b from upper surface 13a and cover 13.The first slit 13c tilts with angle θ 1 with respect to the upper surface 13a or the lower surface 13b of lid 13.When will covering 13 when being installed on the housing 12, the first slit 13c and the second slit 12f are along identical plane positioning.
As shown in Figure 10 and Figure 11, by being inserted, plane blade 15 passes the first slit 13c and second slit 12f moving blade 15 and in end face 14d, form inclined-plane 14f under this state then.
According to inclined-plane 14f to be formed set on demand angle θ 1, the first slit 13c of the first slit 13c in the position of upper surface 13a split shed, the angle θ 2 of the second slit 12f and the second slit 12f be in the position of sidewall 12e split shed.For example, when the angle θ 3 of inclined-plane 14f is 135 when spending, angle θ 1 is set at 45 degree and angle θ 2 is made as 135 degree.
In order in keeping Sealing 14, to form chamfered portion 14m, will be placed on the recess 12a of housing 12 from the maintenance Sealing 14r that do not cut sth. askew that inorganic fiber mat 16 cuts out.The end face 14d that makes unchamfered maintenance Sealing 14r is against the sidewall 12e that comprises the second slit 12f.To cover 13 is fixed on the housing 12 so that the first slit 13c and the second slit 12f locate along same level.Plane blade 15 is inserted through the first slit 13c arrives the second slit 12f up to the far-end of plane blade 15 bottom (penetrale).The plane of motion blade 15 then.Formed the chamfered portion 14m that comprises smooth inclined surface 14f like this.
As shown in figure 12, with keep Sealing 14 be wrapped in exhaust gas purification body 21 around so that inclined-plane 14f is positioned at the outside near shell 23.Protuberance 14h is engaged among the recess 14g.For example can using, the fastening piece of sealing strip 22 keeps recess 14g and protuberance 14h to be engaged with each other.The exhaust gas purification body 21 that keeps Sealing 14 to be twined is pressed in the tube-like envelope 23, makes direction that inclined-plane 14f faces with to be pressed into direction opposite.The flange that will be connected with the exhaust passage is installed on each opening end of tube-like envelope 23.So just finished the manufacturing of exhaust gas purification apparatus.Exhaust gas purification apparatus is installed in the middle part of the exhaust passage of using in the vehicle.
The maintenance Sealing of preferred embodiment has following advantage.
(1) keep Sealing 14 to have the chamfered portion 14m that comprises inclined-plane 14f.In the example shown in Fig. 6 A, distortion when keeping Sealing 14 in being pressed into shell.Therefore, between inclined-plane 14f and outer surface 12j, form right angle or approximate right angle.In traditional maintenance Sealing 14p, owing to the interior perimeter surface 23a friction with shell produces protruding 14k.Yet the maintenance Sealing 14 of preferred embodiment does not have this projection.In the example shown in Fig. 6 B, the size of the protruding 14k that can produce in traditional maintenance Sealing 14p is reduced.Prevented that like this exhaust gas purification body 21 from being blocked by the inorfil that discharges from the protruding 14k that ruptures.
(2) in keeping Sealing 14, do not produce protruding 14k, reduced its size yet if perhaps produce.Therefore, when being installed in shell 23 on the flange connector of exhaust passage, can not produce interference by protruding 14k.
(3) form inclined-plane 14f by the edge 14c that removes between second surface 14j and the end face 14d, thereby the edge that inclined-plane 14f can not spread all between end face 14d and the first surface 14n extends.Therefore, can under the situation of the width that does not reduce to keep Sealing 14, eliminate protruding 14k or reduce its size.
(4) the angle θ 3 of inclined-plane 14f is 105 to 150 degree.Therefore, chamfered portion 14m forms the formation that prevents or minimize protruding 14k effectively, and can not influence the function that for example can keep exhaust gas purification body 21 that keeps Sealing 14.
(5) will keep Sealing 14 to form chamfered portion 14m by the anchor clamps 11 of cutting sth. askew before being pressed in the shell 23.Therefore, on exhaust gas purification body 21 or shell 23, can not cause damage.
(6) be used for guide plane blade 15 first slit 13c that moves and the second slit 12f that the far-end that is used for guide plane blade 15 moves and locate, and tilt at a predetermined angle with respect to the upper surface 13a of lid 13 along same level.Therefore, inclined-plane 14f is smooth.
(7) inorganic fiber mat 16 can comprise organic bond.Organic bond is not only given inorganic fiber mat 16 predetermined thickness and repulsion, and has strengthened the effect that prevents fiber dispersion and be easy to handle inorganic fiber mat 16.
(8) prevented that fiber diameter from being that 6 μ m or bigger inorfil are distributed in the air.Usually, crude fiber is tending towards increasing the possibility that has defective in the fiber cushion, reduces the mechanical strength of fiber cushion, and reduces the repellence to the corrosion that is caused by exhaust.When using fiber diameter is 6 μ m or bigger crude fiber when generating pad, this pad with have identical every area weight but bigger by the littler fibroplastic pad phase specific volume of diameter.This can cause more easily producing big protruding 14k.This factor has stoped uses crude fiber in traditional maintenance Sealing 14p (wherein producing protruding 14k inevitably).On the contrary, prevent or minimize the maintenance Sealing 14 chamfered portion 14m, preferred embodiment that protruding 14k forms, can use coarse-fibred fiber cushion with big fiber diameter by having.
(9) by cutter blade is moved and to keeping Sealing 14 to cut sth. askew along the first slit 13c of the anchor clamps 11 of cutting sth. askew.This prevents or minimizes the formation of protruding 14k.
(10) second slit 12f extend in the sidewall 12e of the recess 12a in the housing 12.The far-end of plane blade 15 inserts among the second slit 12f and moves therein, to form chamfered portion 14m.
(11) anchor clamps 11 of cutting sth. askew have the lid 13 that can separate with housing 12.This is convenient to keep the layout of Sealing 14 in recess 12a.And when keeping Sealing 14 when cutting sth. askew, the lid 13 of covering shell 12 prevents to keep Sealing 14 to shift out or move among recess 12a from recess 12a.
(12) shape of recess 12a is roughly the same with the shape that keeps Sealing 14.This has prevented to keep Sealing 14 to be arranged in the housing 12 in the mode of mistake.
Can be by following modification preferred embodiment.
Inclined-plane 14f needs not to be smooth, and can be crooked or step is arranged.
Inclined-plane 14f can form and connect second surface 14j and the first surface 14n that keeps Sealing 14, and tilts towards exhaust entrance.
The inclined-plane 14f of maintenance Sealing 14 can be by cutting or the cutter rather than anchor clamps 11 formation of cutting sth. askew.
Can cut out one or more maintenance Sealings 14 from single inorganic fiber mat 16.
Keep Sealing 14 can be wrapped in other type the exhaust gas purification body around, this exhaust gas purification body comprises exhaust-gas purifying filter (for example, diesel particulate filter (DPF)) that is used for catching the exhaust particulate and the catalyst carrier that is loaded with the catalyzer that is used for purifying exhaust gas.
To keep before Sealing 14 is pressed in the shell 23, can be on shell 23 be pressed into the opening end opposing open end place mounting flange that keeps Sealing 14.
In the example shown in Fig. 5 A, inclined-plane 14f connects second surface 14j and the end face 14d that keeps Sealing 14.Yet inclined-plane 14f can connect first surface 14n and the end face 14d that keeps Sealing 14.In this case, will keep Sealing 14 to be assemblied in the shell 23 so that keep the first surface 14n of Sealing 14 to contact with the interior perimeter surface 23a of shell 23.
The shape of recess 12a is not must be roughly the same with the shape that keeps Sealing 14, as long as the sidewall 12e of recess 12a contacts with the end face 14d that keeps Sealing 14.
The modified example of the anchor clamps 11 of cutting sth. askew is described with reference to Figure 13, Figure 14 and Figure 15 below.
In the example depicted in fig. 13, housing 12 does not have the second slit 12f.In this case, with also moving therein among the plane blade 15 insertions first slit 13c, comprise the chamfered portion 14m of inclined-plane 14f with formation.
In the example depicted in fig. 14, the anchor clamps 11 of cutting sth. askew have the upper surface 12d that connects housing 12 and the angled slots 12g of sidewall 12e.Determine the angle of inclination of slit 12g and form the position according to inclined-plane 14f to be formed.Will plane blade 15 insert among the slit 12g and therein and move, in the edge that keeps Sealing 14, to form the chamfered portion 14m that comprises inclined-plane 14f in a side near the bottom 12c of recess 12a.In modification shown in Figure 14, do not using under 13 the situation covered keeping Sealing 14 to cut sth. askew.
In the example depicted in fig. 15, the anchor clamps 11 of cutting sth. askew have slit 12h slit 12g that extends from the upper surface 12d of housing 12 and the bottom 12c that is formed on housing 12.Slit 12h and slit 12g locate along same level.In this example, form the chamfered portion 14m that comprises inclined-plane 14f, and be not cut without any part.Also can use lid 13 with slit 13d.In this case, slit 13d, slit 12h and slit 12g locate along same level.In this modification, this 13 has prevented that maintenance Sealing 14 from moving or stretch out from housing 12.Therefore, form the chamfered portion 14m that comprises inclined-plane 14f, and be not cut without any part.
The test examples that keeps Sealing will be described below.
For the test sample 1 to 7 of table 1, produce by the method that describes below and to keep Sealing and it is installed on the metal shell.Then, measure the height of projection that in keeping Sealing, the produces sector-style corrosion test of going forward side by side.The result has been shown in table 1.
Be used to make the method for alumina fiber mat
At first step, Ludox is added to the precursor of the aqueous solution of basic aluminium chloride with the preparation alumina fibre.Aluminium content in the aqueous solution of basic aluminium chloride is 75g/L, and the atomic ratio of Al/Cl is 1.8.Ratio in alumina fibre between aluminium oxide and the silica is Al
2O
3: SiO
2=72 ± 2: 28 ± 2.
Add the organic polymer of polyvinyl alcohol to the precursor of alumina fibre, and concentrated resultant is with the preparation spinning solution.Form fiber by blowing method by spinning solution.Fiber is cut into average fiber length with 12mm.In the mode that is laminated to each other that the alumina fibre piece is folding to generate the alumina fibre veneer.With 500 every 100cm in hole
2Density make veneer stand acupuncture, and toast continuously with 1250 ℃ maximum temperature.The alumina fibre laminated continuous sheet of Huo Deing has 1160g/cm like this
2Every area weight, the fiber diameter of 7.2 μ m and the minimum fiber diameter of 3.2 μ m.
Cutting alumina fibre laminated continuous sheet
Cutting alumina fibre laminated continuous sheet is that 1280mm and thickness are the laminated continuous sheet of 9mm with the finishing profile thereby the acquisition longitudinal size is 12750mm, transverse dimension.Measure solids content in the laminated continuous sheet by using sieve and poidometer.45 μ m or bigger solids content ratio are 7wt% or littler in the laminated continuous sheet.
Resin impregnation
The aqueous dispersion that the preparation solid concentration is 50 ± 10%, pH value is 5.5 to 7.5 acrylic resin (by the production of Japanese Ceng Rong (Zeon) Co., Ltd, product name is LX803).This aqueous dispersion has the resin concentration of 4.5wt%.The aqueous dispersion of acrylic resin is watered on the alumina fibre laminated continuous sheet that is transmitted on the conveyer, thereby with resin impregnation alumina fibre laminated continuous sheet.
The suction solid
Aspirate being impregnated with on the alumina fibre laminated continuous sheet of resin, to remove the solid of too much absorption from veneer.After suction three seconds, the resin impregnation rate in the laminated continuous sheet is 10.0wt%.
Dry
After adjusting resin content, make the alumina fibre laminated continuous sheet hot pressing drying that contracts.Carry out drying 95 to 155 ℃ temperature and reach 100 seconds or more time.Compression distance during drying is 4 to 15mm.After drying, the punching press laminated continuous sheet keeps Sealing 14r to obtain rectangle.
Cut sth. askew and measure height of projection
Remove the edge 14c of the maintenance Sealing 14r that obtains by punching press by the use anchor clamps 11 of cutting sth. askew, to obtain maintenance Sealing 14 through cutting sth. askew.Shown in Fig. 5 B, this maintenance Sealing 14 has inclined-plane 14f, and this inclined-plane connects edge and the second surface 14j between end face 14d and the first surface 14n.As shown in table 1, the angle θ 3 that forms between second surface 14j and inclined-plane 14f changes between these test examples.
In each test examples, with keep Sealing 14 be wrapped in exhaust gas purification body 21 around and be pressed in the shell 23.Measure to keep Sealing 14 from the end face of exhaust gas purification body 21 (towards introducing exhaust side) height of projection (mm) of stretching out backward.Measurement result has been shown in table 1.
Weathering test
Keep Sealing 14 to cut into the size of 25 * 50mm each with the preparation sample.Sample is pressed to 0.3g/cm
3Volume density and be heated to 700 ℃.Then, making cutting zone be exposed to flow velocity is that 300m/min, pressure are that 0.2MPa and pulse frequency are that 7000 times (air-flow of on/off=0.5/1.0) is to measure the corrosion distance that is caused by this air-flow at cutting zone.For each test examples, on five samples, repeat this corrosion linear measure, and measured value is averaged to draw the evaluation result of weathering test.Evaluation result has been shown in table 1.The evaluation of result that is shown as 2.0mm or littler corrosion distance is " excellent ", the evaluation of result that are shown as 2.1 to 6.0mm corrosion distances are " satisfaction ", and the evaluation of result that will be shown as 6.1mm or bigger corrosion distance is " poor ".
Table 1
| Test examples | Angle θ 3 (degree) | Height of projection (mm) | Wind erosion is estimated |
| 1 | 135 | 0.00 | Excellent |
| 2 | 140 | 1.50 | Excellent |
| 3 | 130 | 1.30 | Excellent |
| 4 | 150 | 5.90 | Satisfied |
| 5 | 105 | 5.90 | Satisfied |
| 6 | 155 | 9.20 | Difference |
| 7 | 100 | 6.60 | Difference |
As can be seen from Table 1, when angle θ 3 spent near 135, height of projection diminished.When angle θ 3 outside 105 to the 150 degree scopes time, height of projection significantly increases, and the corrosion distance also increases.When angle θ 3 spends less than 135, only can observe very little projection.When angle θ 3 spends greater than 135, keep the hold facility of Sealing to degenerate to a certain extent, cause moving and form small embossment with respect to purifier 21.
Below with the test examples shown in the description list 28 to 10.The angle θ 3 that keeps Sealing 14 in the test examples 8 to 10 is 130 degree.Measure the average diameter of fiber by the method that describes below.Maintenance Sealing 14 in the test examples 8 to 10 has identical condition except fiber diameter.And measure height of projection in the mode identical with the test of table 1.
Measure fiber diameter
Alumina fibre is placed in the cylinder and in the grinding of 20.6MPa pressure lower compression to generate sample.By sieve sample is classified.The gold by vapor deposition on the surface of sample segment through sifting out.Take sample by electron microscope with 1500 reduction factors then.Measure the diameter of at least 40 fibers that occur in the photo.For each test examples five samples of preparation and take.Fiber diameter is the mean value of five measured values.The result has been shown in table 2.
Table 2
| Test examples | Fiber diameter (μ m) | Height of projection (mm) |
| 8 | 4.9 | 1.15 |
| 9 | 5.8 | 1.20 |
| 10 | 7.2 | 1.40 |
As can be seen from Table 2, when fiber diameter during less than 6 μ m, height of projection changes a little.When fiber diameter is 6 μ m or when bigger, height of projection increases.This shows that to keep the Sealing volume that becomes when fiber diameter is big bigger.
The content of JP-A-2001-316965 and JP-A-2003-20938 is incorporated herein by reference.
It will be apparent to one skilled in the art that under the situation that does not break away from the spirit or scope of the present invention and can implement the present invention with many other concrete forms.Therefore, current example and embodiment should be considered as illustrative and be nonrestrictive, and the present invention is not limited to details given here, and can make amendment in the full scope of equivalents of described scope and claims.
The cross reference of related application
The No.2005-280020 of Japanese patent application formerly that the application submits to based on the No.2005-232410 of Japanese patent application formerly that submits on August 10th, 2005 with on September 27th, 2005 also requires its preference, incorporates its full content here by reference into.
Claims (33)
1, a kind of maintenance Sealing (14), be used for being wrapped in exhaust gas purification body (21) around and this exhaust gas purification body is remained on tube-like envelope (23), this exhaust gas purification body has inlet that enters for exhaust and the outlet of discharging for exhaust, and this maintenance Sealing comprises:
First surface (14n) is used for contacting with described exhaust gas purification body during using described maintenance Sealing; With
Second surface (14j), be used for described maintenance Sealing is wrapped in described exhaust gas purification body around the time and described housing contacts, described maintenance Sealing is characterised in that:
Beveled end (14m) is placed on during using described maintenance Sealing near the described inlet of described exhaust gas purification body, and wherein this beveled end comprises the inclined-plane (14f) that tilts with respect to described at least second surface when not using described maintenance Sealing.
2, maintenance Sealing according to claim 1 is characterized in that, described inclined-plane is with respect to the angle tilt of described second surface with 105 to 150 degree.
3, maintenance Sealing according to claim 2 is characterized in that, described inclined-plane is with respect to the angle tilt of described second surface with 130 to 140 degree.
4, maintenance Sealing according to claim 1 is characterized in that, the contiguous described second surface in described inclined-plane.
5, maintenance Sealing according to claim 1, it is characterized in that, described beveled end comprises a described inclined-plane and an end face (14d), this end face and described first surface quadrature and between described inclined-plane and described first surface, described inclined-plane extends between described end face and described second surface.
6, maintenance Sealing according to claim 1 is characterized in that, described maintenance Sealing is an inorganic fiberboard.
7, maintenance Sealing according to claim 6 is characterized in that, described plate is that acupuncture becomes.
8, maintenance Sealing according to claim 6 is characterized in that, described inorfil is the alumina silica fiber.
9, maintenance Sealing according to claim 6 is characterized in that, described inorfil has 6 μ m or bigger fiber diameter.
10, maintenance Sealing according to claim 6 is characterized in that, described plate comprises organic bond.
According to each described maintenance Sealing in the claim 1 to 10, it is characterized in that 11, described exhaust gas purification body is to be loaded with the catalyst carrier of the catalyzer that is used for purifying exhaust gas or from the exhaust-gas purifying filter of exhaust gas collection particulate.
12, a kind of exhaust gas purification apparatus is characterized in that:
Exhaust gas purification body (21), it has the inlet that enters for exhaust, outlet and the peripheral surface that supplies exhaust to discharge;
According to each described maintenance Sealing (14) in the claim 1 to 11; And
Tube-like envelope (23), it holds described exhaust gas purification body, and the two all contacts described maintenance Sealing and described exhaust gas purification body and described tube-like envelope.
13, exhaust gas purification apparatus according to claim 12 is characterized in that, described maintenance Sealing is resiliently deformable between described exhaust gas purification body and described tube-like envelope.
14, a kind of tabular maintenance Sealing (14) uses with the exhaust gas purification body with the inlet that enters for exhaust, and this maintenance Sealing has homogeneous thickness, it is characterized in that:
Inclined-plane (14f), during using described maintenance Sealing, the inlet of this inclined-plane and described exhaust gas purification body tilts explicitly.
15, maintenance Sealing according to claim 14 is characterized in that, also comprises:
First surface (14n) is used for contacting with described exhaust gas purification body during using described maintenance Sealing; With
With described first surface opposing second surface (14j), described inclined-plane is with respect to the angle tilt of described second surface with 105 to 150 degree.
16, maintenance Sealing according to claim 15 is characterized in that, described inclined-plane is with respect to the angle tilt of described second surface with 130 to 140 degree.
17, maintenance Sealing according to claim 15 is characterized in that, the contiguous described second surface in described inclined-plane.
18, maintenance Sealing according to claim 15 is characterized in that, also comprises:
One end face (14d), itself and described first surface quadrature and between described inclined-plane and described first surface.
19, maintenance Sealing according to claim 15 is characterized in that, described maintenance Sealing is an inorganic fiberboard.
20, maintenance Sealing according to claim 19 is characterized in that, described plate is that acupuncture becomes.
21, maintenance Sealing according to claim 19 is characterized in that, described inorfil is the alumina silica fiber.
22, according to each described maintenance Sealing in the claim 19 to 21, it is characterized in that described inorfil has 6 μ m or bigger fiber diameter.
23, a kind of anchor clamps of cutting sth. askew (11), it uses to make with plane blade (15) and keeps Sealing (14), this maintenance Sealing be used for being wrapped in exhaust gas purification body (21) around and this exhaust gas purification body is remained on tube-like envelope (23), wherein said maintenance Sealing is tabular and comprises side and bottom surface that the described anchor clamps of cutting sth. askew are characterised in that:
Housing (12), it has and is used for respectively the sidewall (12e) and the diapire (12c) that contact with the bottom surface with the side of described maintenance Sealing, and described housing comprises the recess (12a) that is limited by described sidewall and diapire; With
Be used to cover the lid (13) of the recess of described housing, described recess and described lid define the accommodating chamber that is used to hold described maintenance Sealing, described lid has the slit of lid (13c), be used for forming chamfered portion (14m) in an edge of the described maintenance Sealing that is contained in described recess, this slit is suitable for receiving described plane blade and guides moving of this plane blade.
24, the anchor clamps of cutting sth. askew according to claim 23 is characterized in that, the sidewall of the described recess in the described housing and at least one in the diapire have the housing slit (12f that is used to receive described plane blade; 12g; 12h), wherein said housing slit and described lid slit are located along same level.
25, the anchor clamps of cutting sth. askew according to claim 24 is characterized in that, described housing slit is formed in the sidewall of described recess.
26, the anchor clamps of cutting sth. askew according to claim 23 is characterized in that, described lid can separate with described housing.
27, the anchor clamps of cutting sth. askew according to claim 23 is characterized in that:
Described exhaust gas purification body comprises inlet that enters for exhaust and the outlet of discharging for exhaust;
Described maintenance Sealing comprises: first surface (14n) is used for contacting with described exhaust gas purification body during using described maintenance Sealing; Second surface (14j), be used for described maintenance Sealing is wrapped in described exhaust gas purification body around the time and described housing contacts; And the end face that contiguous described exhaust gas purification body enters the mouth during using described maintenance Sealing, this end face is chamfered to and limits the inclined-plane that connects described second surface and described end face.
28, the anchor clamps of cutting sth. askew according to claim 27, it is characterized in that, described maintenance Sealing has a thickness, and described inclined-plane connects the position on described second surface and the described end face, and this position is than the more close described first surface of the mid point of the described thickness of described maintenance Sealing.
29, the anchor clamps of cutting sth. askew according to claim 23 is characterized in that, described lid slit is with respect to the end face of the described maintenance Sealing angle tilts with 30 to 75 degree.
30, a kind of anchor clamps of cutting sth. askew, it uses to make with plane blade and keeps Sealing, this maintenance Sealing be used for being wrapped in the exhaust gas purification body around so that this exhaust gas purification body is remained on tube-like envelope, wherein said maintenance Sealing is tabular and comprises side and bottom surface that the described anchor clamps of cutting sth. askew are characterised in that:
Housing, it has and is used for respectively the sidewall and the diapire that contact with the bottom surface with the side of described maintenance Sealing, described housing comprises the recess that is limited by described sidewall and diapire, wherein said housing comprises the housing slit, is used for forming chamfered portion and guide described plane blade to move on an edge of the described maintenance Sealing that is contained in described recess.
31, the anchor clamps of cutting sth. askew according to claim 30, it is characterized in that, described plane blade comprises intermediate portion and far-end, and described housing slit comprises the slit that is formed in the described sidewall with the slit of the intermediate portion that guides described plane blade and is formed on the far-end that is used to receive described plane blade in the described diapire.
32, a kind of method of using the anchor clamps manufacturing maintenance Sealing of cutting sth. askew according to claim 23 the method is characterized in that:
The cutting inorganic fiber mat is to form plate-like articles, and these article comprise side, bottom surface, first and second surfaces, end face and the edge between described second surface and described end face;
Locate the described anchor clamps of cutting sth. askew to contact with the bottom surface with the side of described plate-like articles respectively;
With the lid covering shell;
Insert plane blade by slit; And
Move described plane blade along described slit, thereby form the maintenance Sealing at the described second surface and the edge between the described end face of described plate-like articles to cut sth. askew.
33, manufacture method according to claim 32 is characterized in that, the step of described plane of motion blade comprises that formation connects the second surface of described maintenance Sealing and the inclined-plane of end face.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-232410 | 2005-08-10 | ||
| JP2005232410A JP2007044820A (en) | 2005-08-10 | 2005-08-10 | Incision tool for holding seal material and method for manufacturing holding seal material by using the same |
| JP2005232410 | 2005-08-10 | ||
| JP2005-280020 | 2005-09-27 | ||
| JP2005280020 | 2005-09-27 | ||
| JP2005280020A JP4673711B2 (en) | 2005-09-27 | 2005-09-27 | Holding sealing material for exhaust gas treating body and exhaust gas purification device using the same |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101506286A Division CN102230411A (en) | 2005-08-10 | 2006-04-21 | Holding seal member and method for manufacturing holding seal member and exhaust gas purifier |
| CN201110150626.7A Division CN102278181B (en) | 2005-08-10 | 2006-04-21 | Holding seal member, method for manufacturing holding seal member and exhaust gas purification apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1912361A true CN1912361A (en) | 2007-02-14 |
| CN1912361B CN1912361B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610074518 Active CN1912361B (en) | 2005-08-10 | 2006-04-21 | Holding seal member and its manufacture method, exhaust gas purification apparatus |
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|---|---|
| JP (1) | JP2007044820A (en) |
| CN (1) | CN1912361B (en) |
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| TWI476083B (en) * | 2013-02-27 | 2015-03-11 | Chang Chun Petrochemical Co | Polyvinyl alcohol polymer film and its cutting method |
| JP7154902B2 (en) * | 2018-09-11 | 2022-10-18 | イビデン株式会社 | Cutting tool for inorganic fiber mat and method for cutting inorganic fiber mat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS4934083A (en) * | 1972-07-31 | 1974-03-29 | ||
| JP4465783B2 (en) * | 2000-03-09 | 2010-05-19 | イビデン株式会社 | Exhaust gas purification catalytic converter and method of manufacturing the same |
| JP2004081643A (en) * | 2002-08-28 | 2004-03-18 | Tostem Corp | Tool for cutting |
-
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- 2005-08-10 JP JP2005232410A patent/JP2007044820A/en active Pending
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| JP2007044820A (en) | 2007-02-22 |
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