CN100500969C - Pressurized steam-jetting nozzle, and method and apparatus for producing nonwoven fabric using the nozzle - Google Patents

Abstract

The present invention relates to a nozzle suitable for jetting high pressure and high temperature steam, and a method and an apparatus for producing an entangled nonwoven fabric using the nozzle. According to the apparatus, a steam inlet side main conduit and a steam outlet side conduit are connected with both end parts of a tubular nozzle holder in a longitudinal direction provided integrally with nozzle members having a plurality of nozzle holes. A steam outlet side conduit is provided with an opening/closing valve and a trap conduit is branched from a conduit at an upstream side from the opening/closing valve. By opening the opening/closing valve, a rapid temperature rise of the nozzle holder can be enabled at a time of starting a production of a nonwoven fabric. Furthermore, even in the opening/closing valve is closed in a regular operation, drainage generated inside the nozzle holder can always be discharged to outside so that steam can be jetted stably and continuously, and thus a high quality entangled fiber nonwoven fabric can be produced continuously from the fiber web by the steam.

Description

Pressurized steam-jetting nozzle and make the method and the device of nonwoven fabric with this nozzle

Technical field

The present invention relates to make the fluid injection nozzle of pressurized steam stream injection and manufacture method and the manufacturing installation that has used the fiber interweaving nonwoven fabric of this nozzle.

Background technology

Up to now, as making by flow of high-pressure fluid being ejected into fiber web that constituting interweaves between fiber makes the technology of the nonwoven fabric that interweaves, known has, and for example the spy opens that clear 50-133579 communique (Patent Document 1), spy are opened flat 9-256254 communique (Patent Document 2), the spy opens disclosed technology in 2000-144564 communique (Patent Document 3) etc.Yet what document 1～3 disclosed high-pressure fluid mainly used is highly pressurised liquid.In the manufacturing of the nonwoven fabric that interweaves of the ejection that utilizes such highly pressurised liquid stream, not only liquid consumption needs to add the equipment that prevents that liquid from dispersing more, need the peace and quietization treatment facility of big quantity of fluid for handling the liquid of discharging the back, and, also need the drying equipment of the nonwoven fabric that makes and a large amount of heat energy that consumed thereof.In addition, the violent noise that produces owing to the injection of liquid makes ecological deterioration.

On the one hand, the use high-pressure water vapor of record replaces highly pressurised liquid in for example above-mentioned Patent Document 1 and the Patent Document 3, is not the technology that makes fiber interweaving energetically, or does not recognize the technology that difference that liquid stream and water vapour flow has just adopted.Its result, the not special differentiation liquid of above-mentioned document 1,3 stream is different with water vapour stream, use has isomorphic injection nozzle, does not have specifically to disclose any nozzle structure of considering the peculiar behavior of injection water steam, the perhaps feed mechanism of water vapour and output mechanism etc. of relating to.

Problem when making the fiber interweaving nonwoven fabric in order to solve utilization as above-mentioned highly pressurised liquid stream, for example the world discloses No. 95/06769 brochure (Patent Document 4) and the spy opens when having proposed to utilize flow of high-pressure fluid to make nonwoven fabric in flat 7-No. 310267 communiques (Patent Document 5), the above-mentioned Patent Document 2, uses the scheme of water vapour energetically as high-pressure fluid.Use water vapour like this, compare the use amount that can reduce water significantly with the water consumption of spraying, can make simultaneously it discharge the treatment facility miniaturization, generation that not only can noise-decreasing, improve operating environment, can also remove drying equipment or make its miniaturization, thereby realize energy-conservationly, and can reduce the generation of the pattern of the peculiar part of exposing in nonwoven surface that interweaves when utilizing liquid stream to make the fiber interweaving nonwoven fabric.

Adopt the nonwoven fabric manufacture method of above-mentioned Patent Document 4, all or part of cooperation at fibroreticulate formation fiber has the fusing point fiber lower than the temperature of water vapour or superheated vapour, utilizing liquid stream to make the formation fiber interweaving of net make cloth and silk (nonwoven fabric) in advance places, then from the surface of this cloth and silk to cloth and silk inner ejection water vapour or superheated vapour, low-melting fiber fusion on one side fusion is on one side adhered to manufactures final products (nonwoven fabric).In addition, the deinterleaving method of the net put down in writing of above-mentioned Patent Document 5 is interweaved network fiber by using water vapour as high-pressure fluid.On the other hand, according to the manufacture method of above-mentioned Patent Document 2 disclosed nonwoven fabric, replace existing high-pressure injection water, direct injection water vapour on fiber web, follow owing to temperature at this moment reduces the spray water that produces and work, make the formation fiber interweaving of net make nonwoven fabric.

Yet, analyze the content of above-mentioned Patent Document 4, the water vapor pressure when wherein not having the record injection relevant, the size of nozzle, shape etc. and utilize water vapour to the peculiar various conditions of fiber interweaving with the use high-temperature water vapor this point of mentioning.Hence one can see that, the document 4 is disclosed utilizes for example manufacturing of the nonwoven fabric of superheated vapour stream of high temperature, its purpose is not to be to utilize this water vapour crossed fiber, and main purpose is to be to make by what the hot melt property material formed with so-called water vapour heat fibroreticulately to constitute fibers melt.Usually,, for example also put down in writing, on fiber web, leave owing to spray strike trace or the perforate trace that fluid produced as above-mentioned Patent Document 3 to the fiber interweaving nonwoven fabric that the injection that utilizes High-Pressure Water is made.

In the manufacture method of the nonwoven fabric of above-mentioned Patent Document 4,, utilize the fiber interweaving of jet water course as preceding operation to fiber web injection water steam.Thereby, utilizing this jet water course to carry out on the cloth and silk of fiber interweaving, also staying above-mentioned strike trace or perforate trace certainly, the high-temperature water vapor of injection is not to connect to thickness direction on whole of cloth and silk, and mainly is by above-mentioned strike trace or perforate trace.Certainly, the also fusion simultaneously of low-melting fiber that at this moment exists at other net surfaces that do not form above-mentioned strike trace or perforate trace.About this point, can be from Fig. 4～Fig. 5 of the document 4 and from also exist between fiber mutually the fusion attachment portion to recognize in the zone that does not form above-mentioned strike trace or perforate trace.Its result, the nonwoven fabric shown in this figure contacts the nonwoven fabric that forms and is as good as with existing point on flexibility, and particularly there is the more sclerosis part that produces owing to the hot melt property material in its surface.

In addition, in the above-mentioned Patent Document 5, for the structure of an embodiment of the jetting nozzle of illustrated water vapour, not with regard to structure, the size of this jetting nozzle and use pattern not do any concrete record.

On the one hand, in the above-mentioned Patent Document 2,, how this nozzle is sent into water vapour, just water vapour evenly and is continuously sprayed and do not do special record from this nozzle though put down in writing the concrete structure of the jetting nozzle of water vapour.Generally, this sprays employed water vapour, be through the softening interpolation of handling the water for industrial use of a small amount of additive, and, mixed imperceptible foreign matter in this water vapour because by various pipe arrangements etc., stop up the jetting nozzle hole easily.Perhaps, a part that imports to the water vapour of nozzle is condensed and is become condensed water, and near the easy plug nozzle of savings hole nozzle bore makes the discontinuous ejection at intermittence of water vapour easily.And, the structure of the document 2 disclosed nozzles, even can adopt the injection nozzle of suitable liquid stream, but as the jetting nozzle of water vapour, component count is also too many, and is too complicated.

Summary of the invention

The present invention is the scheme that proposes in order to solve problem, its purpose is, obtain simple structure and pressurized steam evenly and is continuously sprayed, make a part or most of weave in really of fibroreticulate formation fiber obtain required intensity, the flexibility on the surface that can guarantee the nonwoven fabric that obtains and the pressurized steam-jetting nozzle that this external morphology is improved are provided; The manufacture method of nonwoven fabric efficiently that fibroreticulate formation fiber is positively interweaved by pressurized steam being sprayed with this nozzle; Utilize the apparatus for continously production of the high-quality fiber interweaving nonwoven fabric of the water vapour manufacturing of using this nozzle.

The basic comprising of above-mentioned pressurized steam-jetting nozzle of the present invention is characterised in that, has the water vapour outlet that water vapour introducing port that an end is connected with the pressurized steam supply pipe, the other end are connected with outside water vapour discharge pipe, simultaneously, possesses the injection nozzle carrier that prolongs the hollow tube-shape of opening along following length direction; Below the said nozzle frame, can dispose with loading and unloading and have the jet element of a plurality of nozzle bores that form towards above-mentioned opening.

In this most outstanding characteristic point be, at injection nozzle carrier one end the water vapour introducing port arranged, the other end has the water vapour outlet.Water vapour is sprayed from pressurized steam-jetting nozzle always.For example, when making regular check on or machinery when stopping, the supply of water vapour is stopped.The ejection of water vapour is stopped, and the temperature in the nozzle also reduces rapidly certainly.When water vapour ejection beginning nonwoven fabric is made, be necessary to make pressurized steam-jetting nozzle inside to be warmed up to set point of temperature.When this heats up, as the jetting nozzle of prior art, make the water vapour introducing port constitute the occasion of air-tight state in addition, the water vapour amount that imports in the injection nozzle carrier mostly is from the amount of nozzle bore ejection most, for the few nozzle of heat exchange amount self is heated up, required is chronic.

For this reason, the present invention is provided with the water vapour outlet at the other end of injection nozzle carrier as mentioned above, and is for example described as the back on the water vapour discharge pipe that joins with this water vapour outlet, switch valve is installed made the water vapour outlet can switch.Before non-woven cloth manufacturing device starts, import water vapour to injection nozzle carrier.At this moment, the water vapour outlet is in open mode, makes the water vapour that imports from the water vapour introducing port be discharged to the outside continuously by the water vapour outlet.Measure the temperature of injection nozzle carrier,, then close above-mentioned water vapour outlet if this temperature reaches regulation high temperature.Close simultaneously at this, measure the water vapor pressure of water vapour introducing port, when this water vapor pressure reaches certain pressure, non-woven cloth manufacturing device is started.Time till the startup of arriving this moment heats up injection nozzle carrier because utilize rapidly by the new high-temperature water vapor in the injection nozzle carrier, so, compare with the sort of situation of water vapour outlet that do not exist of prior art, be shortened significantly.

Among the present invention, as the shape of the injection nozzle carrier of hollow tube-shape, specifically enumerated the injection nozzle carrier of injection nozzle carrier cylindraceous or rectangle, injection nozzle carrier particularly cylindraceous is because have pressurized steam stream evenly, is convenient to make etc. often be used.In addition, during practical operation, preferably with the highdensity cartridge filter of this injection nozzle carrier inside, the filter cylindraceous in the injection nozzle carrier for example cylindraceous, or the filter deployment of the rectangle in the injection nozzle carrier of rectangle is on same axis, but be not limited thereto.

Among the present invention, state the occasion of cylinder-shaped filter in the use, preferably the highdensity cylinder-shaped filter with said nozzle frame inside is configured on the same axis.Here, so-called highdensity cylinder-shaped filter is meant to have the filter that the diameter that can remove fine foreign matter contained when water vapour imports is the hole about 1-50 μ m.At this moment, the water vapour that imports from the water vapour introducing port that is arranged at injection nozzle carrier one end is directed to cylinder-shaped filter inside, arrives the nozzle bore that is formed on the nozzle plate by this filter, sprays to the outside from this nozzle bore.At this moment, utilize cylinder-shaped filter to make the uniform while of pressure distribution of the length direction on the inner surface of injection nozzle carrier, because fine foreign matter contained when water vapour imports is removed from water vapour by cylinder-shaped filter, so a plurality of nozzle bores of the jet element that forms along the length direction of injection nozzle carrier can be not blocked, high-pressure water vapor is pressed stably from this nozzle bore ejection with even ejection.

The said nozzle frame has condensed water discharge outlet in its underpart.And the said nozzle frame is tilted separately or with jet element.This is because the condensed water savings is arranged in the injection nozzle carrier in the work, is discharged to the outside easily in order to make this condensed water.For this reason, form condensed water discharge outlet, for example utilize switch such as switch valve freely, in time band arbitrarily, open this switch valve the condensed water of the inner savings of injection nozzle carrier is discharged to the outside at the base end part of the downside of the incline direction of injection nozzle carrier.At this moment, because injection nozzle carrier is tilted configuration, so the extra means that does not need to attract etc.Also have, this injection nozzle carrier is tilted separately, itself and jet element are tilted simultaneously.In addition, in order to make condensed water nonchoking nozzle hole etc., between the configuration plane of the bottom surface of injection nozzle carrier and jet element, step is set, or at the bottom surface of injection nozzle carrier formation condensed water stream (groove), have again, can also make the condensed water stream and the separate setting of injection nozzle carrier that are communicated with the bottom surface part of injection nozzle carrier.In the occasion that the condensed water stream independently is set, injection nozzle carrier is tilted, this stream is tilted.In addition, above-mentioned inclination is the best for horizontal greatest gradient with 1/100.Because if this slope ratio 1/100 is big, condensed water is then put aside fast at the inclination base end part of injection nozzle carrier, must get rid of condensed water continually, and then causes the water vapor pressure skewness in the injection nozzle carrier easily.

On the one hand, the above-mentioned opening that forms below the said nozzle frame can be the opening of the continuous strip that forms on the length direction of injection nozzle carrier, also can be a plurality of apertures that form the diamond check shape on the length direction of injection nozzle carrier.The pressure that Jie arrives the water vapour that is formed at the nozzle bore on the jet element by these openings is by pressure equalization, becomes possibility for the even injection of the water vapour of nozzle length direction.Yes forms at the position that the above-mentioned opening of injection nozzle carrier staggers for above-mentioned condensed water stream.

The said nozzle parts can be made of the nozzle plate support component of the nozzle plate with a plurality of nozzle bores and this nozzle plate of support.The said nozzle Kongzui has a hole well.The shape in above-mentioned tube hole can only be cylindric, more can be for having the continuous shape portion that falls from power in tube hole upper end with the said nozzle hole, perhaps the said nozzle hole is inherent with in the heart towards vestibule from the following end periphery in above-mentioned tube hole, is preferably in that to have extended ring plate on the concentric circles also passable.Can also on the tube hole upper end in said nozzle hole, have the continuous ditch portion of the shape section of falling from power continuous on the length direction of said nozzle plate, or can have rounding frustum hole in above-mentioned each upper end, hole cylindraceous.

Being formed at the nozzle bore of said nozzle plate, can be single-row formation on the length direction of nozzle plate, also can be for example multiple row formation on the short direction of nozzle plate.If at this moment the multiple row nozzle bore is arranged in the diamond check shape, because the stepless action of ejection water vapour is in fibroreticulate width, so comparatively desirable.

In addition, concerning above-mentioned tube hole, the ratio of best tube hole height cylindraceous and internal diameter is 1～2.If this value is littler than 1, water vapour stream is not easy to become columnar flow, if bigger than 2, then because nozzle bore would be small and the former thereby inaccessible high-precision processing of the thickness of slab of nozzle plate.In addition, has the ring plate of prolonging if nozzle bore constituted as described above from the lower end periphery in above-mentioned tube cylindraceous hole towards the inherent concentric circles of vestibule, concentrate at certain point from the water vapour stream of nozzle bore ejection, for example increase ejection power, then run through the positive and negative of this net easily for fiber web.Above-mentioned centrostigma is by decisions such as the shape of nozzle bore and water vapor pressures.

The thickness of slab of said nozzle plate preferably is made as 0.5～1mm, and the water vapour ejiction opening internal diameter in said nozzle hole is made as 0.05～1mm, and the interval between this nozzle is made as 0.5～3mm.If the thickness ratio 0.5mm of nozzle plate is little, then be difficult to obtain the enough intensity of water-fast vapour pressure, if surpass 1mm, the high-precision processing difficulties of then fine nozzle bore.For the processing of making this nozzle bore, can adopt discharge processing or Laser Processing.In addition, if the water vapour ejiction opening internal diameter of nozzle bore is littler than 0.05mm, processing difficulties and cause hole plug easily not only then is if surpass 1mm then required ejection power when being not easy to obtain the water vapour ejection.If be spaced apart 0.5～3mm between nozzle, then can obtain between fibroreticulate formation fiber, interweaving fully simultaneously.In addition, the interval between nozzle is meant the distance between each nozzle bore central point.

In addition, in the present invention, the said nozzle parts also can constitute by having the single part that forms with the lower part: the ship shape depression ditch portion that is communicated with the lower ending opening of said nozzle frame; Along the rectangular cross section ditch portion that the boat bottom of this depression ditch portion forms; Along a plurality of rounding frustums hole that the length direction of this rectangular cross section ditch portion forms in accordance with regulations at interval; The tube cylindraceous hole that forms continuously in the lower end in each rounding frustum hole.Not only can cut down number of components significantly by constituting such jet element with single part, and the directly approaching fibroreticulate jeting surface of the above-mentioned injection openend that can make nozzle bore, the reduction that utilizes the adiabatic expansion of pressurized steam to release the pressure, the perforation power in can better being netted.

And then, if the lower surface shape of the cross direction of said nozzle parts is made outstanding flexure plane shape downwards, then be convenient to fibroreticulate importing.Also be preferably in this invention the tube in above-mentioned tube hole high with ratio internal diameter be 1～2, in addition, the water vapour ejiction opening internal diameter in said nozzle hole is preferably 0.05～1mm, the interval between this nozzle is preferably 0.5～3mm.Interval between the nozzle of this moment is also with above-mentioned same, is meant distance between the central point of each nozzle bore.Also be that multiple row forms the said nozzle hole for best on the length direction of jet element this moment.

Pressurized steam-jetting nozzle of the present invention with above formation is suitable for the manufacture method of for example following nonwoven fabric of the present invention.

Promptly, the basic comprising of the invention relevant with the manufacture method of nonwoven fabric is, use possesses an end and has the water vapour introducing port, the other end that are connected with the steam under pressure supply pipe and have the water vapour outlet that is connected with outside water vapour discharge pipe, has the injection nozzle carrier of the hollow tube-shape of opening simultaneously along following length direction; Dispose the following of said nozzle frame removably and have the pressurized steam-jetting nozzle of the jet element of the relative a plurality of nozzle bores that form with above-mentioned opening, and utilize the continuous injection pressurized steam on fibroreticulate cross direction that comes out from a plurality of nozzle bores to make the manufacture method of the nonwoven fabric that constitutes fiber interweaving, it is characterized in that comprising following content: import pressurized steam from above-mentioned water vapour introducing port during beginning, discharge this steam under pressure from this water vapour outlet to the outside simultaneously; Measure the temperature in the above-mentioned pressurized steam-jetting nozzle; When the temperature in this nozzle reached temperature required, Jie discharged the road by trap with water vapour and switches to the condensed water drain passageway, and the discharge of above-mentioned water vapour is stopped; Make the injection nozzle hole continuous walking of fiber net surface after the discharge of water vapour stops, utilizing from the pressurized steam of injection nozzle hole ejection and make fibroreticulate formation fiber interweaving said nozzle; Attracting to connect fibroreticulate water vapour discharges to the outside.

This manufacture method can be enhanced productivity by the non-woven cloth manufacturing device involved in the present invention with following basic comprising.

Promptly, a plurality of nozzle bores that the basic comprising of this manufacturing installation relates to by forming from the length direction at pressurized steam-jetting nozzle spray pressurized steam to the fiber web of relative walking, make this formation fiber interweaving make the device of nonwoven fabric, it is characterized in that having: the end at above-mentioned pressurized steam-jetting nozzle is situated between by the pressurized steam supply source of pressurized steam supply pipe connection; The other end at above-mentioned pressurized steam-jetting nozzle is situated between by the water vapour discharge pipe of switch valve connection; Relative with certain interval that is separated by, a plurality of pressurized steam-jetting nozzles hole that forms on the above-mentioned pressurized steam-jetting nozzle, and this pressurized steam-jetting nozzle held transfer mechanism to the porous fibre net load that a direction of crosscut moves; This travel mechanism of clamping also is configured to the attraction mechanism of an opposite side with above-mentioned pressurized steam-jetting nozzle.The pressurized steam-jetting nozzle that preferably adopts the invention described above to relate to as above-mentioned pressurized steam-jetting nozzle.

The said nozzle frame of above-mentioned pressurized steam-jetting nozzle prevents the temperature reduction by the pressurized steam of inside generally by coatings such as heat-insulating materials, the integral body heating with pressurized steam-jetting nozzle that can also be positive.As its concrete method, have that to utilize silicon be the method for the hot media heating of wet goods and the electric furnace heating that utilizes eddy-current heating etc., other for example with the whole folding and unfolding of pressurized steam-jetting nozzle in the casing that makes pressurized steam ejection side opening, importing is heated to the hot blast of high temperature in this casing.If utilize hot blast that pressurized steam-jetting nozzle integral body is warmed up to more than the saturated vapor temperature of the water vapour that for example uses in advance like this, the temperature that then can prevent inner pressurized steam effectively reduces, not only easily obtain acting on the required water vapour amount of nonwoven fabric effectively, also interweaved easily and carried out the high-quality nonwoven fabric that heat fusing adheres to.

On the one hand, normally above-mentioned pressurized steam-jetting nozzle is configured in the fibroreticulate top of walking, pressurized steam discharging jet in addition above fibroreticulate, above-mentioned pressurized steam-jetting nozzle can also be configured in the fibroreticulate below of walking, pressurized steam discharging jet in addition upward below fibroreticulate.Make the pressurized steam discharging jet when fibroreticulate below sprays upward like this, the condensed liquid of water vapour is difficult to put aside in the nozzle bore on be disposed at injection nozzle carrier, can spray stable steam and comparatively desirable.

Applying pressurized steam with one group of device of the above-mentioned attraction mechanism of the water vapour of above-mentioned pressurized steam-jetting nozzle and and configuration relative with said nozzle from fibroreticulate one side also is the purpose that the present invention will reach, can also prepare two groups of these pressurized steam-jetting nozzles and water vapour and attract mechanism, they are configured to spray pressurized steam for fiber web from tow sides alternately.

Under this occasion, because fibroreticulate formation fiber not only is subjected to interleaving effect from one side by pressurized steam, and can independently be acted on from tow sides, so fibroreticulate formation fiber interweaves and heat fusing adheres to equably at tow sides, stability can not only be obtained, positive and negative in appearance uniform high-quality nonwoven fabric can also be obtained as the pattern of nonwoven fabric.

In addition, between the above-mentioned fiber web of direction walking and above-mentioned attraction mechanism, the water vapour reflecting plate can be set.This water vapour reflecting plate has a plurality of holes that diameter is 1～10mm, and this aperture opening ratio is preferably 10～50%.Than these values when also little, the attraction of the water vapour that is produced by above-mentioned attraction mechanism during by fiber web can not be worked effectively, is worth in addition to reflect the water vapour amount very little when big.When the pressurized steam from above-mentioned pressurized steam-jetting nozzle ejection connected fiber web, this formation fiber interweaving got up.But, the fiber interweaving state of fibroreticulate pressurized steam ejection side and perforation side is compared more formerly the carrying out interweaving of formation fiber that interweave of the formation fiber of water vapour ejection side than the perforation side.Here, by disposing the water vapour reflecting plate as described above, connect fibroreticulate water vapour and arrive fibroreticulate perforation side surface by this water vapour baffle reflection, make the interweaving of formation fiber of water vapour reflecting plate side obtain promoting, for example, even at fiber web in occasion from direction ejection pressurized steam, owing to not only carry out fiber interweaving on the surface of this opposition side, the formation fiber that protrudes in fibroreticulate perforation side also is pressed against above-mentioned ejection side and it is interweaved, so obtain all uniform stable nonwoven fabric pattern of positive and negative easily.

And above-mentioned fiber web transfer mechanism has the nozzle bore and the load of the porous fibre net between the above-mentioned fiber web that are disposed at pressurized steam-jetting nozzle and holds transfer mechanism; Fiber web is clamped in this fiber web load to be held between the transfer mechanism and to hold the transfer mechanism coordination with this fiber web load and transfer fibroreticulate porous fibre net and push transfer mechanism, above-mentioned fiber web load is held transfer mechanism and fiber web is pushed the words of transferring between the transfer mechanism because if fiber web is clamped in, even the fiber web of transferring to quilt sprays the water vapour of High Temperature High Pressure, the fiber of net surface can be not random yet, so comparatively desirable.At this moment, above-mentioned fiber web load holds transfer mechanism and the above-mentioned transfer mechanism of pushing can be the perforated conveyor belt that rotates by the mutual driven in synchronism of drive source, perhaps above-mentioned fiber web is pushed transfer mechanism and above-mentioned fiber web load, and to hold any one party of transfer mechanism be to drive carousel, on the other hand, can also be the porous rotating cylinder that rotates with this conveyer belt driven in synchronism.

Under the former situation,, has the attraction mechanism that has strip attraction opening at the position relative with the nozzle bore of above-mentioned pressurized steam-jetting nozzle in the inboard of this any one conveyer belt; Under the latter's the situation,, have and have strip in the inboard of this conveyer belt or rotating cylinder and attract the attraction mechanism of opening comparatively desirable at above-mentioned conveyer belt and the immediate position of above-mentioned rotating cylinder.These attract any one setting that all is fixed in the mechanism, and conveyer belt or rotating cylinder and above-mentioned strip attract opening surface near also rotating.

If above-mentioned fiber web is pushed transfer mechanism and above-mentioned fiber web load and is held any one party of transfer mechanism and adopt the porous rotating cylinder, miniaturization that then can implement device integral body.The structure of this rotating cylinder and attraction mechanism and configuration can be adopted with cylinder and drag for same in fact structure and the configuration of rotating cylinder and attraction mechanism that the paper machine is adopted.In addition, as perforated conveyor belt and rotating cylinder, can use wire netting or open-porous metal.At this moment, the fiber web reticular density of pushing transfer mechanism preferably is no more than the reticular density that the fiber web load is held transfer mechanism.In general, the reticular density of these transfer mechanisms be preferably 20～40 (individual/2.54cm), if it is (individual/as 2.54cm), then to have by this formation fiber of pushing the face side that transfer mechanism pushes and penetrate mesh and fly out from the surface to the phenomenon of transverse direction expansion that particularly the fiber web reticular density of pushing transfer mechanism is less than 20.In addition, if particularly the fiber web reticular density of pushing transfer mechanism (individual/as 2.54cm), mesh then to take place easily stop up, the surface diffusion into the surface that the ejection water vapour is pushed transfer mechanism along fiber web hinders the perforation to fiber web ejection water vapour greater than 40.Hold the reticular density of transfer mechanism about fiber web load, if exceed above-mentioned number range then be difficult to produce high-quality nonwoven fabric.

Usually, above-mentioned pressurized steam-jetting nozzle is fixedly installed on the assigned position, be in motionless state, above-mentioned fiber web is pushed transfer mechanism and above-mentioned fiber web load and is held transfer mechanism and also fiber web is moved like that to a side and move to a direction, but among the present invention, preferably make above-mentioned pressurized steam-jetting nozzle to the transverse direction on fibroreticulate handover road with the short stroke reciprocating motion, maybe with this pressurized steam-jetting nozzle fixed placement, make above-mentioned fiber web push transfer mechanism and above-mentioned fiber web load hold transfer mechanism on the transverse direction on fibroreticulate handover road with same short stroke reciprocating motion.Like this, make pressurized steam-jetting nozzle or fiber web push transfer mechanism and fiber web load and hold any one reciprocating occasion in the transfer mechanism, evenly spray pressurized steam at fibroreticulate cross direction, can not produce the wave pattern that causes because of water vapour, the nonwoven fabric that can obtain having uniform configuration of surface from the nozzle bore ejection on the surface of the nonwoven fabric of making.The interval that the width of this reciprocating motion stroke cans be compared between nozzle most is wideer, is ± the 5mm degree that this reciprocating speed is 30～300 times/minute specifically.

But the gap that the nozzle bore of this above-mentioned pressurized steam-jetting nozzle and fiber web are pushed between the transfer mechanism is preferably as far as possible little, preferably makes its direct sliding-contact if possible.But, make the nozzle bore of pressurized steam-jetting nozzle and fiber web push the transfer mechanism sliding-contact, the damage that causes because of both friction is big, can not obtain required persistence.Here, push the mechanism that this gap of adjustment is preferably arranged between the transfer mechanism at the nozzle bore and the fiber web of pressurized steam-jetting nozzle.By this clearance adjustment mechanism, the best can be adjusted in the gap that the nozzle bore and the fiber web of pressurized steam-jetting nozzle are pushed between the transfer mechanism, guarantee the persistence of device simultaneously.In addition, can also be provided with and adjust that above-mentioned fiber web is pushed transfer mechanism and above-mentioned fiber web load is held the 2nd clearance adjustment mechanism in the gap between transfer mechanism.It is suitable for according to fibroreticulate formation fibrous material most or nets thickly, adjusts its chucking power.

In addition, in the non-woven cloth manufacturing device that the present invention relates to, on the pipeline of above-mentioned pressurized steam supply pipe, disposed water vapour savings portion, this water vapour savings portion temporarily puts aside water vapour, preferably will for example be situated between and discharge to the outside at dust in the water vapour of this savings etc. with condensed liquid by trap.Also have, disposed heating arrangements on the pipeline of the pressurized steam supply pipe between above-mentioned water vapour savings portion and above-mentioned pressurized steam-jetting nozzle one end, between above-mentioned water vapour savings portion and above-mentioned water vapour jetting nozzle, utilization will be by the heating of the water vapour in the above-mentioned heating steam supply pipe of pressurized steam, make it generate superheated vapour, because under the required high pressure of fiber web, can make the high-temperature water vapor ejection, so comparatively desirable.At this moment, be 0.1～2Mpa if make the water vapor pressure that imports to above-mentioned water vapour jetting nozzle, then can make water vapour positively connect fibroreticulate positive and negative, thereby comparatively desirable.

When spraying, the outside sharply descends from nozzle bore from the pressurized steam of water vapour jetting nozzle ejection because of adiabatic expansion causes temperature.Cause the condensing fog-like liquid that becomes easily of water vapour because of this temperature descends, no longer become the high-pressure fluid that blows afloat towards periphery, so be difficult to arrive fibroreticulate inside.Superheated vapour is to depress the water vapour that is warmed to the above temperature of saturation temperature at saturated vapor, is difficult to condensing liquefaction between saturation temperature and overtemperature.For this reason,, penetrate into inside but immerse even contact also not condensingly with fiber web from the superheated vapour of water vapour jetting nozzle ejection, one side circumference fiber interweave on one side.Thereby, utilize this add hot water and steam pass through interweaving of fiber adhered to simultaneously with heat fusing carry out.

In the non-woven cloth manufacturing device of the present invention, be preferably in fibroreticulate transfer direction configuration pre-treatment mechanism, be interweaved than easier processing aspect the above-mentioned pressurized steam-jetting nozzle to be used for fiber in the net that upstream side water vapour jetting nozzle forms.

As mentioned above, make in the leading portion operation of fiber interweaving in the ejection that utilizes water vapour, by carrying out constituting the pre-treatment that fibroreticulate fiber phase mutual edge distance shortens, the injection that utilizes high-pressure water vapor also can immaculate and the fiber that carries out effectively in the fiber web be interweaved.

Among the present invention, as the above-mentioned facilitation mechanism that interweaves, only spraying fog-like liquid on fibroreticulate surface also is enough, but also can adopt the fiber interweaving with liquid stream or braiding mesh of prior art.For example, when being soaked in water, net looks attenuation, because the phase mutual edge distance shortens and can easily interweave between fiber.This pre-treatment also can prevent effectively because of the ejection water vapour cause from the fibre pick of net surface or disperse.Have, as above-mentioned pre-treatment, fibroreticulate formation fiber has at least a part of low-melting mixed with fibers to place, and can dispose heating arrangements and further promote this heat fusing to adhere to again.

In addition, non-woven cloth manufacturing device of the present invention can also dispose from the delivery valve pipeline of the line branching of the water vapour discharge pipe between the other end of above-mentioned switch valve and above-mentioned pressurized steam-jetting nozzle.As described above, before device is started working, switch valve on the water vapour discharge pipe that the water vapour outlet that is arranged at pressurized steam-jetting nozzle is joined is opened, import pressurized steam from an end of pressurized steam-jetting nozzle, water vapour outlet discharge water steam from the other end, when the internal temperature of pressurized steam-jetting nozzle rose to the temperature of regulation, above-mentioned switch valve cut out.

As mentioned above, if be provided with the delivery valve pipeline of the line branching of water vapour discharge pipe, after then switch valve is closed, contained fine foreign matter etc. also is situated between with condensed liquid and flows to the delivery valve pipeline by the water vapour discharge pipe in condensed liquid that produces in the pressurized steam-jetting nozzle or the water vapour, be discharged to the outside at the appropriate time, do not have the obstruction that causes nozzle bore because of condensed liquid or fine foreign matter in the working time of device yet, water vapour is stably sprayed from all nozzle bores.As being applicable to the such manufacture method of the present invention and the pressurized steam-jetting nozzle of manufacturing installation, can adopting pressurized steam-jetting nozzle of the present invention with described formation.In addition, for example understand pressurized steam-jetting nozzle in the above description in one deck configuration, can also be at fibroreticulate direction of travel multi-layer configuration water vapour jetting nozzle.At this moment, as previously mentioned,, then can obtain the stable high-quality nonwoven fabric of configuration of surface if pressurized steam-jetting nozzle and attraction mechanism interworking thereof are put at fibroreticulate positive and negative.

Have again, each layer that be configured in of the nozzle bore of above-mentioned pressurized steam-jetting nozzle gone up to fibroreticulate cross direction displacement.

Description of drawings

Fig. 1 represents the profilograph of the 1st structure example of pressurized steam-jetting nozzle of the present invention.

Fig. 2 is the back view of this nozzle.

Fig. 3 is along the profile of II-II line arrow among Fig. 2.

Fig. 4 is the enlarged drawing of the A portion shown in the arrow among Fig. 3.

Fig. 5 is the profile of modified example of the nozzle bore shape of the above-mentioned pressurized steam-jetting nozzle of expression.

Fig. 6 represents the part stereogram of other modified examples of the nozzle bore shape of identical above-mentioned pressurized steam-jetting nozzle.

Fig. 7 represents the profile of another other modified examples of the nozzle bore shape of above-mentioned pressurized steam-jetting nozzle.

Fig. 8 is the profile that is equivalent to Fig. 3 of the 2nd structure example of expression pressurized steam-jetting nozzle of the present invention.

Fig. 9 is the profile that is equivalent to Fig. 3 of the 3rd structure example of expression pressurized steam-jetting nozzle of the present invention.

Figure 10 is the profile that is equivalent to Fig. 3 of the 4th structure example of expression pressurized steam-jetting nozzle of the present invention.

Figure 11 is that other of nozzle bore of expression pressurized steam-jetting nozzle of the present invention are arranged the key diagram of the same nozzle of example.

Figure 12 is the vertical view of an example of jet element of the pressurized steam-jetting nozzle of expression the 2nd embodiment of the present invention.

Figure 13 is along the profile of XII-XII line arrow among Figure 12.

Figure 14 is along the profile of XIII-XIII line arrow among Figure 12.

Figure 15 is the enlarged drawing of the B portion shown in the arrow among Figure 14.

Figure 16 represents the stereogram of identical jet element structure major part.

Figure 17 is the pipeline key diagram of the 1st embodiment of the summary manufacturing process that represents nonwoven fabric of the present invention.

Figure 18 is with respect to the water vapour pipeline diagrammatic illustration figure of pressurized steam-jetting nozzle among expression the 1st embodiment.

Figure 19 is the formation key diagram of the 2nd embodiment of the summary manufacturing process that represents nonwoven fabric of the present invention.

Figure 20 is the formation key diagram of the 3rd embodiment of the summary manufacturing process that represents nonwoven fabric of the present invention.

Figure 21 is the formation key diagram of the 4th embodiment of the summary manufacturing process that represents nonwoven fabric of the present invention.

Figure 22 is that the major part of the 4th embodiment of the best of the summary manufacturing process that represents nonwoven fabric of the present invention constitutes key diagram.

Figure 23 is the formation key diagram of the 5th embodiment of the summary manufacturing process that represents nonwoven fabric of the present invention.

Figure 24 is the profilograph of the example in heating part of expression pressurized steam-jetting nozzle of the present invention.

Figure 25 is illustrated in fiber web of the present invention and attracts the profilograph of 1 example of configuration water vapour reflecting plate between the mechanism.

The specific embodiment

Below, specify with regard to representational embodiment of the present invention based on drawing.

Fig. 1～Fig. 4 represents representational the 1st structure example of pressurized steam-jetting nozzle of the present invention.The pressurized steam-jetting nozzle 10 of the 1st structure example has: injection nozzle carrier 11; Be fixed by welding in the 1st and the 2nd flange 12,13 at the two ends of this injection nozzle carrier 11; Insert said nozzle frame 11 inside, the high density filter device 14 cylindraceous that both ends are supported with the 1st and the 2nd flange 12,13; Have below said nozzle frame 11 utilization welding or bolt etc. and fixing the jet element 15 of a plurality of nozzle bores.The jet element 15 of illustrated example has the 1st and the 2nd nozzle plate support component 15a, 15b; Be connected nozzle plate 16 between the 1st and the 2nd nozzle plate support component 15a, the 15b with fixed-use bolt.

The 1st flange 12 that the water vapour that is fixed on said nozzle frame 11 imports side end forms the through hole 12c that is made up of large-diameter portion 12a and minor diameter 12b along center line, and Jie is connected by the not shown pressurized steam supply pipe that latch 17 is connected with not shown pressurized steam supply source.The 2nd flange 13 that the water vapour that is fixed on this injection nozzle carrier 11 is discharged side end also forms the through hole 13c that is made up of large-diameter portion 13a and minor diameter 13b along this center line, is connected with not shown water vapour discharge pipe.At the both ends of above-specified high density filter 14, be fixed with the fixed part 18,19 of ring-type, it is arranged to fix with each large-diameter portion 12a, the 13a air-tightness of the above-mentioned the 1st and the 2nd flange 12,13.

Below said nozzle frame 11, till the inner space that stays these both ends, the plane excision forms excision face 11a.Its result, central authorities form the strip opening 11b that length direction prolongs below injection nozzle carrier 11.Said nozzle parts 15 constitute by the 1st nozzle plate support component 15a with prism-shaped with the 2nd tabular nozzle plate support component 15b that the 1st support component 15a has same length and a width as shown in Figures 1 and 2.Central authorities form the depressed part 15a ' to the length direction prolongation that removes the length direction both ends below the 1st nozzle plate support component 15a.In addition, in this upper central portion, by a plurality of through hole 15a of above-mentioned depressed part 15a ' " as Fig. 4 amplify represented, be configured to oblique trellis and form at length direction.

Above-mentioned the 2nd nozzle plate support component 15b as amplification among Fig. 4 is represented, forms the strip opening 15b ' that prolongs along length direction at the position corresponding to above-mentioned depressed part 15a '.The section of this strip opening 15b ' is the rectangular cross section of lengthwise in the subtend of above-mentioned depressed part 15a ', be connected and be the platform shape section of expansion downwards with its lower end.In addition, the thin 15b of portion with Rack is compared at the position that forms the above-mentioned strip opening 15b ' of the 2nd nozzle plate support component 15b with other positions ", with this thin 15b of portion " have and the above-mentioned thin 15b of portion below relative the 1st nozzle plate support component 15a " chimeric protuberance 15c.

Said nozzle plate 16 can embed the above-mentioned thin 15b of portion by having " size and the elongated thin plate sheet of shape form, have a plurality of nozzle bore 16a that interval in accordance with regulations forms side by side in length direction one row or multiple row in the central authorities of this cross direction.The 1st nozzle plate support component 15a such as Fig. 1 and shown in Figure 3 make the above-mentioned excision face 11a of the top and injection nozzle carrier 11 of the 1st nozzle plate support component 15a be in the close proximity state, are fixed into one by welding.Said nozzle plate 16, by the thin 15b of portion of the protuberance 15c of above-mentioned the 1st nozzle plate support component 15a and the 2nd nozzle plate support component 15b " matching surface between under the state of clamping, be situated between and utilize bolt 21 that the 1st nozzle plate support component 15a and the 2nd nozzle plate support component 15b are hermetic fixedlyed connected by O type ring 20 to strengthen support.Thereby by taking off bolt 21, nozzle plate 16 can easily take off, so can clean simply or change.

Said nozzle hole 16a is not only a cylindrical shape, can be as Fig. 5～shape shown in Figure 7.The shape of nozzle bore 16a shown in Figure 5, top is reverse frustoconic, makes the bottom that is connected with this reverse frustoconic form cylindrical shape.When adopting this hole shape, shown in figure, columnar height is L, and when columnar bore was D, from good centrality and 2 considerations of high-precision hole processing that can guarantee injection stream, the value of L/D was preferably 1～2.

Fig. 6, the groove of formation reverse frustoconic section on nozzle plate 16 forms a plurality of cylinder holes with predetermined distance in this bottom surface at length direction simultaneously, and then, along these cylinder hole row excision two ends, the left and right sides.At this moment, if the front end crest line portion of outstanding cylinder hole is processed into circular-arc,, can not make fibroreticulate surface fiber disorder even this nozzle bore 16a is contacted or approaching with fiber web yet.The shape of nozzle bore 16a shown in Figure 7 forms under columnar hole end periphery and prolongs the ring plate 16a ' that at concentric circles to the inside.By adopting this hole shape, the high-pressure water vapor that sprays from this nozzle bore 16a becomes boundling stream.

If adopt pressurized steam-jetting nozzle 10 with this structure, as described later, during for example from pressurized steam-jetting nozzle 10 ejection high-temperature high-pressure steams, if the end from the injection nozzle carrier 11 of tubulose when beginning to move imports water vapour, the words of emitting from the other end, the fresh water steam of High Temperature High Pressure does not have any obstacle ground to be passed through from the inside of injection nozzle carrier 11, so the injection nozzle carrier 11 that temperature is reduced is warmed up to the temperature of regulation.As prior art when the introducing port of an injection nozzle carrier setting water vapour, even import the fresh water steam of High Temperature High Pressure to injection nozzle carrier, water vapour can be at the internal circulation of injection nozzle carrier yet, but is full of in this injection nozzle carrier, so the condensing of water vapour taken place easily, the intensification of injection nozzle carrier needs for a long time.

The thickness of slab of said nozzle plate 16 preferably is made as 0.5～1mm.If littler then be difficult to obtain the enough intensity of water-fast vapour pressure than 0.5mm, if would surpass 1mm then the high-precision processing difficulties of fine nozzle bore 16a.For the fabrication and processing of this nozzle bore 16a, can adopt discharge processing or Laser Processing.In addition, if the water vapour ejiction opening internal diameter of nozzle bore 16a is littler than 0.05mm, processing difficulties and cause hole plug easily not only then is if surpass 1mm then required ejection power when being not easy to obtain the water vapour ejection.If be spaced apart 0.5～3mm between nozzle, then between fibroreticulate formation fiber, can be interweaved fully.

Fig. 8 represents the 2nd structure example of pressurized steam-jetting nozzle 10 of the present invention.The 2nd structure example is with the difference of above-mentioned the 1st structure example, is fixed by welding in the structure of the 1st nozzle plate support component 15a on the excision face 11a of injection nozzle carrier 11.According to the 2nd structure example, from the through hole 15a of above-mentioned the 1st nozzle plate support component 15a with oblique trellis assortment " discharge, above-mentioned depressed part 15a ' still is communicated with strip opening 11b on the excision face 11a that is formed at injection nozzle carrier 11.This is because if the water vapor pressure of the water vapour of High Temperature High Pressure injection nozzle carrier 11 in is under the stable status, it is almost constant to distribute at the length direction upward pressure, and because of above-mentioned through hole 15a " existence, make the water vapour stream disorder of an opposite side.In addition, owing to remove a plurality of through hole 15a from above-mentioned the 1st nozzle plate support component 15a ", thereby making simple structureization, it is simple that this processing also becomes.

Fig. 9 represents the 3rd structure example of pressurized steam-jetting nozzle 10 of the present invention.The 3rd structure example is that with the difference of above-mentioned the 1st structure example coated by the cylindric overcoat 22 of lower aperture around the said nozzle hole frame 11, this open end is fixed by welding on above-mentioned the 1st nozzle plate support component 15a.In this cylindric overcoat 22, supply with the hot media that adds of water vapour or thermal medium etc., the condensing generation that prevents that cooling effect by outer gas from causing by heating at the part water vapour of injection nozzle carrier 11 inside.It also is effective replacing cylindric overcoat 22 with the electrothermal heater.

Figure 10 represents the 4th structure example of pressurized steam-jetting nozzle 10 of the present invention.The 4th structure example is with the difference of above-mentioned the 3rd structure example, and is the same with difference between the 2nd structure example with above-mentioned the 1st structure example, is the structure that is fixed by welding in the 1st nozzle plate support component 15a on the excision face 11a of injection nozzle carrier 11.According to the 4th structure example, in above-mentioned the 3rd structure example, from the through hole 15a of above-mentioned the 1st nozzle plate support component 15a with oblique trellis assortment " discharge, above-mentioned depressed part 15a ' still is communicated with strip opening 11b on the excision face 11a that is formed at injection nozzle carrier 11.Its function also has the above-mentioned functions of the 3rd structure example except that the function of the 2nd structure example.

In above embodiment, exemplified the example that a plurality of nozzle bore 16a that are formed on the whole nozzle plate 16 form a line and dispose, be formed among the present invention nozzle plate 16 a plurality of nozzle bore 16a can as Figure 11 (a) shown in (b) like that, be configured to 2 row or the above multiple row of 2 row.Like this, with nozzle bore 16a, when for example being configured to side by side 2 row, the nozzle bore 16a of configuration is staggered 1/2 at interval at row at interval, it is comparatively desirable to be configured to oblique trellis.When nozzle bore 16a is configured to oblique trellis, compare when single-row, even set longly at the same interval that lists nozzle bore 16a, on the whole, shorten in fact at interval, apply to the fibroreticulate cross direction of transferring from the pressurized steam of pressurized steam-jetting nozzle 10 ejections comprehensively, be difficult for producing wave pattern.

Figure 12～Figure 16 represents the 2nd embodiment of the present invention.At this foregoing description, be with the difference of the embodiment that forms by above-mentioned the 1st～the 4th structure example, jet element 23 is not to be made of the cutting plate of the 1st and the 2nd nozzle plate support component 15a, 15b as the foregoing description, but constitute by single parts, on this jet element 23, directly form nozzle bore 26.Therefore, the nozzle plate 16 as another body of conduct of above-mentioned embodiment does not need yet.

On the said nozzle parts 23 of the 2nd embodiment, have: the ship shape depression ditch portion 24 that is communicated with the strip opening 11b of the central length direction prolongation that forms below injection nozzle carrier 11; Along the ditch portion 25 that the boat bottom of this depressed part 24 forms with rectangular cross section; The a plurality of rounding frustum hole 26a that form at interval in accordance with regulations along the length direction of this rectangular cross section ditch portion 25; The cylinder hole 26b that forms continuously in the lower end of each frustum of a cone hole 26a.Above-mentioned rounding frustum hole 26a and cylinder hole 26b constitute nozzle bore 26 in this embodiment.And then the face shaping front of said nozzle parts is seen as elongated rectangular, and the curved shape outstanding towards the below arranged below the side is seen as.(with reference to Figure 14)

Like this, constitute by single part according to present embodiment jet element 23, jet element 15 constitutes with nozzle plate 16 one as above-mentioned embodiment, simultaneously because this jet element 15 is not divided into the 1st and the 2nd nozzle plate support component 15a, 15b yet, so not only can reduce the part number, can also get rid of the complexity of assembling operation.Particularly, among above-mentioned the 1st embodiment, nozzle bore 16a is formed on the nozzle plate 16, the face relative with fiber web is not direct water vapour ejection side opening at nozzle bore 16a, but is situated between by the strip opening 15b ' that forms on the 2nd nozzle plate support portion 15b, in the present embodiment, owing to can make nozzle bore 26 directly towards fiber web, so, can set the water vapour ejection openend of nozzle bore 26 and the gap between fiber web arbitrarily, can more effectively realize fiber interweaving.

In addition, according to present embodiment, because on this jet element 23, form the depression ditch portion 24 and ditch portion 25 of above-mentioned ship shape with the rectangular cross section that forms along the ship shape bottom of this depression ditch portion 24, so the pressure of water vapour reduces few, in addition, because the side-looking form of jet element self has the curved shape (with reference to Figure 14) outstanding towards the below below being, so can reduce the fiber web walking time and fibroreticulate contact area, make fibroreticulate walking slicker and more sly.In addition, identical with above-mentioned the 1st embodiment among this embodiment, the height of above-mentioned cylinder hole 26b and the ratio of internal diameter preferably are set at 1～2, and the diameter of this cylinder hole 26b preferably is made as 0.1～1mm, and the interval that this nozzle bore is 26 preferably is made as 0.5～3mm.

Figure 17～Figure 18 summary is represented the 1st embodiment of the nonwoven fabric manufacturing process that the present invention relates to that these pressurized steam-jetting nozzles 10 are the most suitable, arranged spaced conveyer belt 30 in accordance with regulations below above-mentioned pressurized steam-jetting nozzle 10.The above-mentioned pressurized steam-jetting nozzle 10 of these conveyer belt 30 crosscuts rotates to a direction.Therefore, the two ends counter-rotating portion of this conveyer belt 30, by being driven by the driven roller 31 of not shown drive motor and driven voller 32 when supporting, below support by jockey pulley 33, give suitable tension force to conveyer belt 30.This conveyer belt 30 for example is made of the reticulated that uses plastic thick line large-mesh braiding.

This reticular density can be set arbitrarily.In addition, the interval between the fiber web that above-mentioned pressurized steam-jetting nozzle 10 and conveyer belt 30 are transferred is in 0～30mm according to fibroreticulate fibre density and its thickness setting.Surpass temperature and the reduction of ejection dynamics that 30mm then sprays water vapour stream.The water vapor pressure that imports to above-mentioned pressurized steam-jetting nozzle 10 preferably is set to 0.1～2Mpa based on fibroreticulate formation fiber material and fibre density, if become superheated vapour from the water vapour of steam-jetting nozzle ejection, even reduce because of adiabatic expansion causes temperature, also can not become vaporific water vapour and atomize and scatter from the superheated vapour of nozzle bore 16a ejection.

Corresponding to above-mentioned pressurized steam-jetting nozzle 10 be provided with the above-mentioned conveyer belt 30 of position clamping below dispose suction mechanism.In the present embodiment this suction mechanism by gettering container 40, be situated between and utilize the vavuum pump 42 that pipe arrangement is connected with this gettering container 40, the mist separator 43 that is connected with the discharge side of this vavuum pump 42 to constitute by separator pot 41.Here, above-mentioned separator pot 41 is to be used to make the water vapour that is attracted by gettering container 40 to make the gas-liquid separator jar of gas-liquid separation, above-mentioned mist separator 43 will be removed from water vapour from foreign matter, pernicious gas or liquid etc. the water vapour that vavuum pump 42 is discharged, when the water vapour (gas) that will purify is released to the outside and goes, has the function of the muffler that the noise that will produce reduces from vavuum pump.

Above-mentioned pressurized steam-jetting nozzle 10 has as stating Fig. 1～nozzle structure shown in Figure 16, imports side end at this water vapour and imports side main line (c1) importing from the high-pressure water vapor that pressurized steam supply source S1 supplies with by water vapour.Import in the side main line (c1) at this water vapour, the water vapour of sending here from water vapour supply source S1 is temporarily imported to water vapour savings portion 51, in its bottom, being situated between is recovered to not shown recycling can by the 1st pump line road 57 with it with condensed water savings contained in the water vapour.The water vapour that imports to water vapour savings portion 51 is situated between by pressure-control valve 52 and accurate filter 53, utilizes heater 54 to be heated as superheated vapour, sends pressurized steam-jetting nozzle 10 to.

In the present embodiment, as Figure 17 and shown in Figure 180, configuration Temperature Detector WI and pressure detector PI between the water vapour importing side end of above-mentioned heater 54 and pressurized steam-jetting nozzle 10.Above-mentioned water vapour imports side main line (c1) to have from the additional pipeline (c2) of the water vapour that position branch is set of heater 54, and this water vapour replenishes pipeline (c2) and is connected with the pressurized steam supply source.Replenish in the way of pipeline (c2) at this water vapour, acceptance is installed from the temperature detection signal of above-mentioned heater 54 and the 1st switch valve 55 that moves, when the detected steam temperature of said temperature detector WI is lower than lower limit temperature, above-mentioned switch valve 55 is opened, new water vapour supplementary feed steam is imported side main line (c1), make the superheated vapour temperature rise to the temperature range of regulation.Regulate above-mentioned switch valve 55 and adjust the water vapour amount of being replenished, so that above-mentioned superheated vapour temperature reaches the temperature of regulation.

By system as described above, the temperature that becomes the water vapour of object can be controlled in the set point of temperature scope.In addition, above-mentioned pressure detector PI is connected with the pressure-control valve 52 of the upstream side that is configured in above-mentioned accurate filter 53, and the water vapor pressure of adjusting water vapour importing side main line (c1) is stable to keep it.

Discharge side end at the water vapour of pressurized steam-jetting nozzle 10 and dispose the 2nd Temperature Detector TI, water vapour is discharged side end and is connected with water vapour discharge line (c3).Be connected with the 2nd Temperature Detector TI on water vapour discharge line (c3), the 2nd switch valve 56 that is closing when reaching design temperature with the detected steam temperature of this Temperature Detector TI is mounted.In addition, be branched from the dirty survey delivery valve pipeline 57 of above-mentioned the 2nd switch valve 56, even above-mentioned the 2nd switch valve 56 close water vapour discharge line (c3) by locking in, also be to be discharged in the not shown recycling can that goes out at the inner condensed waters that take place of the injection nozzle carrier 11 of pressurized steam-jetting nozzle 10 always.

Also have, in the present embodiment, import side end at the pressurized steam of the injection nozzle carrier 11 of Figure 18, be formed with the outlet of water vapour condensed liquid in its bottom, this outlet is situated between and is connected with condensate line (c4) by the 3rd switch valve 62.At this moment, above-mentioned pressurized steam-jetting nozzle 10, importing side end with water vapour is that base end part lifts the end of above-mentioned water vapour discharge line (c3) upward slightly, makes pressurized steam-jetting nozzle 10 tilt to place.In any case the pressurized steam of distributing nozzle frame 11 all can condensingly liquefy in the work of pressurized steam-jetting nozzle 10.As previously mentioned, the bottom surface side opening part at injection nozzle carrier 11 embeds the 1st nozzle plate support component 15a fixing.Therefore, between the bottom surface of injection nozzle carrier 11 and the 1st nozzle plate support component 15a, make step so that uprise above this support component 15a, usually the condensed liquid (water) that generates in the inside of injection nozzle carrier 11 can not arrive nozzle plate 16, if but the amount increase of condensed liquid then not necessarily be no more than above-mentioned step and flow nozzle plate 16.Its result, it is not slick and sly that the ejection of pressurized steam becomes.

As mentioned above, be connected with condensate line (c4) by the 3rd switch valve 62 if when the bottom surface that the pressurized steam of injection nozzle carrier 11 imports side end forms the outlet of steam condensed liquid, be situated between in advance, the 3rd switch valve 62 can be opened as required, just the condensed liquid of savings in the bottom surface of injection nozzle carrier 11 outside can be discharged to.At this moment, as mentioned above, the pressurized steam of injection nozzle carrier 11 is imported side end to be provided with than the lower slightly words in end of water vapour discharge line (c3), then the condensed liquid at the bottom surface of injection nozzle carrier 11 savings automatically focuses on the condensed liquid outlet that pressurized steam imports side end, so this discharge becomes easy.In addition, focus on the bottom surface side of injection nozzle carrier 11 in order to make condensed liquid, flow into pressurized steam sleekly and import side end, it is comparatively desirable to form groove in the bottom surface of injection nozzle carrier 11 along length direction.

And, in the present embodiment, be provided for water jet nozzle 58 to not shown fibroreticulate jet surface water at the upstream side of the fiber web direction of travel of above-mentioned pressurized steam-jetting nozzle 10.Configuration makes the water that ejects from above-mentioned water jet nozzle 58 guided plate 59 to the web surface guiding between this water jet nozzle 58 and fiber web, so that the water that ejects from water jet nozzle 58 is not applied directly to net surface, to make it become current direction by guided plate 59 dirty but be situated between.This water jet nozzle 58, be equivalent to be used to make the pre-treatment mechanism of facilitation of interweaving in the present invention, be subjected to before the impact from the pressurized steam of pressurized steam-jetting nozzle 10, apply the volume contraction that water looks fiber web, interfibrous phase mutual edge distance in the net is shortened, utilize pressurized steam-jetting nozzle 10 to make the interior interfibrous facilitation that is interweaved of net.Also be provided with the 2nd gettering container 45 below corresponding to the above-mentioned conveyer belt 30 that the position is set of above-mentioned guided plate 59, this gettering container 45 also is situated between and is connected with above-mentioned vavuum pump 42 by knockout drum 46.

The exhaust outlet at the top of above-mentioned separator pot 41 is situated between and is connected with the attraction pipeline (c5) that above-mentioned knockout drum 46 and above-mentioned vavuum pump 42 are coupled together by switch valve 47, and the bottom of this knockout drum 41 is situated between and is collaborated by fluid pump 48 and the connecting line (c6) that above-mentioned playpipe 58 and water supply source WA are coupled together.In addition, configuration level switch 49 between the upper limit water level portion of this separator pot 41 and lower limit water level portion, if the water level of this separator pot 41 surpasses the upper limit or is lower than lower limit,, the action of above-mentioned fluid pump 48 is stopped according to the instruction of not shown control device just send this signal.

In addition, open-close lid 60 for the portion that is provided with that coats above-mentioned pressurized steam-jetting nozzle 10 and water jet nozzle 58 is set in the present embodiment.The top of this open-close lid 60 is connected with suction pump 61, and the spray water steam that utilizes this suction pump 61 to produce in the portion of setting of pressurized steam-jetting nozzle 10 and water jet nozzle 58 attracts to emit to the outside at any time.In addition, omitted diagram in the present embodiment, certainly, pressurized steam-jetting nozzle 10, this water vapour import the heat-insulating material covering except the glass fabric that is had aluminium foil of water vapour ejection spray orifice etc. such as pipe arrangement and water vapour discharge pipe.

Adopt the non-woven cloth manufacturing device of the present embodiment of above this structure, before the work, if at first the 2nd switch valve 56 of the water vapour discharge line (c3) of above-mentioned pressurized steam-jetting nozzle 10 is opened, import the words that side main line (c1) imports the superheated vapour of high pressure from water vapour, fresh superheated vapour is discharged side opening from importing side opening by the inside flow direction of the injection nozzle carrier 11 of pressure (hydraulic) water steam jetting nozzle 10, makes injection nozzle carrier 11 be warmed up to required overtemperature rapidly.At this moment, the Temperature Detector TI that discharges side end with the water vapour that is arranged on injection nozzle carrier 11 measures its temperature, when this detected temperatures arrives when temperature required the aperture of regulating above-mentioned the 2nd switch valve 56.When regulating the aperture of this switch valve 56, drive conveyer belt 30, make it begin to rotate.

By the rotation of conveyer belt 30, at first being situated between will be applied to the not shown web surface of being transferred by this conveyer belt from the water that water jet nozzle 58 sprays by guided plate 59.At this moment the water yield as long as soak the fiber of web surface, makes its form stable just enough, therefore get final product on a small quantity, in addition, as the bringing device of this water should not water flow down, but get final product to spray vaporific water.Also have,, the easy occasion that interweaves is arranged also, do not consider to make in advance the method for the facilitation that interweaves this moment according to constituting fibroreticulate fiber material.On the other hand, according to constituting fibroreticulate fiber material, have only to apply the occasion that water also is difficult to make the facilitation that interweaves.At this moment, disclosed as above-mentioned Patent Document 5, replace the above-mentioned method that applies water also can be the same with prior art, the inject high pressure current, this moment, its water yield is volume not necessarily, also can on a small quantity too.

Applied the fibroreticulate surface of water on the surface, then apply from the column with equalization pressure and temperature of each nozzle bore 16a ejection of above-mentioned pressurized steam-jetting nozzle 10 or the superheated vapour of boundling stream, this powerful superheated vapour stream is immersed in the net, when making on every side fiber interweaving, adhere to and connect fiber web and make the crossed fiber nonwoven fabric that uses water vapour continuously while carry out heat fusing.At this moment, the 2nd switch valve 56 that is arranged at water vapour discharge line (c3) is in closed condition, the inside of the injection nozzle carrier 11 of pressurized steam-jetting nozzle 10 generates condensed water, and this condensed water is arranged at recycling can recovery system outside from be situated between the 2nd hydrophobic bend pipe pipeline 57 by branch of the upstream side of above-mentioned the 2nd switch valve 56 always.

Its result, the superheated vapour that sprays from this nozzle bore 16a is not intermittently to spray but the ejection of steady and continuous ground.Like this, owing to spray stable superheated vapour continuously,, produce the nonwoven fabric of very high-quality with desirable strength so fiber web integral body is interweaved equably on the fibroreticulate surface of walking.

Figure 19 represents the summary of the 2nd embodiment of the manufacturing process of nonwoven fabric of the present invention.In this embodiment, be with the difference of the 1st embodiment, the mechanism of getting rid of the facilitation that interweaves of the upstream side that is disposed at pressurized steam-jetting nozzle 10, simultaneously, make it in the present invention, be used as the net handover face that the fiber web load is held the above-mentioned conveyer belt 30 of transfer mechanism, be provided with and be used as 2nd conveyer belt 34 that of the present invention fiber web push transfer mechanism of this conveyer belt 30 to same direction rotation, with the 1st and the 2nd conveyer belt 30,34 transfer not shown fiber web under the state of clamping, Jie is by above-mentioned the 2nd conveyer belt 34, makes superheated vapour from pressurized steam-jetting nozzle 10 ejections conveyer belt 30 towards the below above fibroreticulate.

Like this, if on one side with 2 conveyer belts 30 and 34 gripping fibers nets, apply the words of superheated vapour on one side to net surface, as above-mentioned the 1st embodiment, not only needn't consider before being used for pressurized steam-jetting nozzle 10 ejection superheated vapours, to make in advance the mechanism of the facilitation that interweaves, can not make the distortion of net form attitude even be subjected to the impact that ejection produced of the superheated vapour of origin self-pressurization water vapour jetting nozzle 10 yet, its result can improve from the pressure of the superheated vapour of pressurized steam-jetting nozzle 10 ejections, and under high pressure Pen Chu superheated vapour stream can positively connect fiber web.Among this embodiment, with fibroreticulate above relative above-mentioned the 2nd conveyer belt 34 mesh (mesh-density) though set slightlyer than the mesh of the conveyer belt 30 of below, not necessarily must be thick, also can be set at equal mesh.

Figure 20 represents the summary of the 3rd embodiment of the manufacturing process of nonwoven fabric of the present invention.In this embodiment, be, the pressurized steam-jetting nozzle 10 and the allocation position of gettering container 40 are put upside down with the difference of the 2nd embodiment.Promptly, gettering container 40 is set to the back side of the net walking side of the 2nd conveyer belt 34 above being disposed at, the nozzle bore 16a of pressurized steam-jetting nozzle 10 is set to towards the back side of the net walking side of the conveyer belt 30 that is disposed at the below, the high pressure superheater water vapour is sprayed towards be clamped in walking between this conveyer belt 30 and the 2nd conveyer belt 34 not shown fibroreticulate by conveyer belt 30 below.

Like this, with pressurized steam-jetting nozzle 10 be disposed at conveyer belt 30 below, when from following direction fiber web ejection high pressure superheater water vapour, then the condensed water that produces at the injection nozzle carrier 11 of this pressurized steam-jetting nozzle 10 is collected in side below the injection nozzle carrier 11, owing to make the nozzle bore 16a above being disposed at only spray the high pressure superheater water vapour always, so except that the function of above-mentioned the 2nd embodiment, can also make from the superheated vapour of nozzle bore 16a ejection off and on fiber web not to be sprayed continuously, produce the crossed fiber nonwoven fabric with more high-quality water vapour.Among this embodiment, certainly make mesh (mesh-density) chap of the conveyer belt 30 that is provided with towards the below.

Figure 21 represents the summary of the 4th embodiment of the manufacturing process of nonwoven fabric of the present invention.According to this embodiment, with above-mentioned pressurized steam-jetting nozzle 10 with towards the gettering container 40 of these nozzle 10 configurations during as one group, should many groups (illustrated example is 2 groups) be disposed at fibroreticulate transfer direction, and the configuration of pressurized steam-jetting nozzle 10 and gettering container 40 is turned upside down mutually.Promptly, make the 1st group pressurized steam-jetting nozzle 10 nozzle bore 16a towards while push fibroreticulate above together walking the 2nd conveyer belt 34 above pressurized steam-jetting nozzle 10 is set, the attraction opening that makes gettering container 40 simultaneously is towards holding fiber web from the below load and transferring the below configuration gettering container 40 of fibroreticulate the 1st conveyer belt 30.On the other hand, the 2nd group pressurized steam-jetting nozzle 10, make its nozzle bore 16a towards holding fiber web from below load and transferring the below of fibroreticulate the 1st conveyer belt 30 and when disposing, gettering container 40 makes it attract opening above the 2nd conveyer belt 34 of pushing fiber web and walking together from above and be set up.

Like this, for the fiber web of transferring with 30,34 clampings of the 1st and the 2nd conveyer belt, above the present dynasty and following when alternatively making the high pressure superheater water vapour from pressurized steam-jetting nozzle 10 ejection, the high pressure superheater water vapour acts on fibroreticulate tow sides equably, at the positive and negative of the nonwoven fabric that produces, constitute fiber and interweave down equably, guarantee the morphological stability of nonwoven fabric easily, can also remove positive and negative difference in appearance, improve commodity value.

Figure 22 is the pith of the 4th embodiment of the best of the summary manufacturing process that represents nonwoven fabric of the present invention.The jet element of the high-pressure water vapor jetting nozzle shown in symbol 23 expression Figure 11～16 among the figure, the conveyer belt 34 of transfer mechanism is pushed in the following configuration that approaches this jet element 23 as fiber web, being used as fiber web load holds the 1st conveyer belt 30 loads of transfer mechanism and holds the fiber web W that transfers and transferred by above-mentioned conveyer belt 34 clampings and coordination ground, when this clamping was transferred, Jie made the high pressure superheater water vapour be ejected into web surface by the nozzle bore 26 of said nozzle parts 23.Configuration is as the gettering container 40 that attracts mechanism below approaching above-mentioned the 1st conveyer belt 30.

Among this embodiment, the attraction opening of above-mentioned gettering container 40 is configured on the position relative with the nozzle bore 26 of jet element 23, and its shape is made the strip of the attraction of avoiding ambient gas as much as possible.It is good that the A/F of this strip perforate is about the 10mm degree, this attraction also is the exhaust capacity of the ventilation fan that is used in the general factory, be that the 300Pa degree is enough, be worth than this and easily fibroreticulate formation fiber applied orientation when big, than the little attraction deficiency that then causes easily of this value.Certainly, the water vapor pressure of this attraction during according to fibroreticulate thickness, density, from jet element 23 ejections also is necessary to adjust in required scope.

In addition, among this embodiment, must keep the gap between gap, the 1st conveyer belt 30 and the gettering container 40 between jet element 23 and the 2nd conveyer belt 34, a plurality of restriction guiding rotation roller 35b of the top position of supporting and guiding the following a plurality of support rotation roller 35a and restrictions of the 1st conveyer belt 30 and guide the 2nd conveyer belt 34 are set.By this support rotation roller 35a and restriction guiding rotation roller 35b are set, not only can come clamping to transfer fiber web W with suitable chucking power with the 1st and the 2nd conveyer belt 30,34, and when avoiding each conveyer belt 30,34 and jet element 23 and gettering container 40 and being slidingly connected, the subtend gap can also be maintained small.In addition, use known upper-lower position guiding mechanism also can adjust these respectively and support rotation roller 35a and restriction guiding rotation roller 35b.

Figure 23 represents the summary of the 5th embodiment of the manufacturing process of nonwoven fabric of the present invention.Among this embodiment, hold the swing roller 36 that transfer mechanism has adopted porous as the load of fiber web W.Push transfer mechanism as fiber web, same as the previously described embodiments, adopt perforated conveyor belt 34.

Above-mentioned conveyer belt 34, ring hang over the swing roller 36 that is disposed at its below required central angular region periphery and be disposed at the top of swing roller 36.At this moment, conveyer belt 34 and swing roller 36 are by the synchronous backward driving rotational.Fiber web W is situated between between above-mentioned conveyer belt 34 and swing roller 36 and is imported into by conveyer belt 37 and not shown guided plate or guide reel, fiber web W is clamped between conveyer belt 34 and the swing roller 36, while the periphery cycle rotation of the swing roller 36 that is equivalent to above-mentioned central angle is sent to discharging side.

On the one hand, the high-voltage high-temperature steam that sprays from the above-mentioned pressurized steam-jetting nozzle 10 that is arranged on above-mentioned conveyer belt 34 inboards invades the fiber web W that is held handover between above-mentioned conveyer belt 34 and the swing roller 36, connect fiber web W while the formation fiber interweaving that makes this fiber web W, be situated between and emit to the outside by the gettering container 38 that is arranged on swing roller 36 inside.This suction box 38 makes it attract a mouthful 38a to be equal to the fabric width size of fiber web W and form strip on the fabric width direction effectively to attract.The fabric width size of above-mentioned attraction mouth 38a is same with the 4th embodiment that has stated, is advisable with the 10mm degree, also can do change to a certain degree according to fibroreticulate thickness, density or its material.The position of the attraction mouth 38a of gettering container 38 and the nozzle bore 16a of pressurized steam-jetting nozzle 10,26 relative, approach the internal face of swing roller 36 and fixedly install, the water vapour that is attracted is situated between by not shown return bend joint, and the road direction outside that emits that forms by the central part at the rotating shaft of swing roller 36 emits.

In the present embodiment, further in the inside of conveyer belt 34, upstream side at above-mentioned pressurized steam-jetting nozzle 10, when the blowoff 39 of pressurized high-temperature air is set, at the upstream side of the attraction mouth 38a of the above-mentioned gettering container 38 of the inside that is disposed at above-mentioned swing roller 36, form the 2nd corresponding to the position of the blowoff 39 of above-mentioned pressurized high-temperature air and attract a mouthful 38b.This attracts shape and the size of mouthful 38b approximately identical with above-mentioned attraction mouth 38a, but also can be set to littler from the ejection pressure of high-temperature pressurizing air of ejection here than ejection pressure from pressurized steam-jetting nozzle 10, in addition, the size of not shown nozzle bore also can be set imprecisely.

This be because, fiber web W is applied above-mentioned forced air, and above-mentioned pressurized steam is different with applying, before applying this water vapour, apply forced air earlier and make formation fiber interweaving, to reach the purpose of the configuration of surface of temporarily guaranteeing fiber web W near fiber web W surface.In addition,, utilize the blowoff 39 of above-mentioned pressurized high-temperature air, make this low-melting fibers melt and adhere to, can make the configuration of surface of fiber web W stable with fibers melt on every side if the part of the formation fiber of fiber web W is mixed with low-melting fiber.In addition, the nozzle material as present embodiment uses can adopt Fig. 1～jet element shown in Figure 16, in addition, and about the loop that can also adopt Figure 17 and Figure 18 to exemplify for the water vapour loop of pressurized steam-jetting nozzle 10 among this embodiment.

In the foregoing description, nozzle bore 16a with pressurized steam-jetting nozzle 10 of above-mentioned structure only holds transfer mechanism and/or pushes the transfer mechanism setting towards fibroreticulate load, the present invention then can be further heats energetically to the integral body of above-mentioned pressurized steam-jetting nozzle 10, makes it keep high temperature.Figure 24 represents the one example.According to this figure, used folding and unfolding to have the heating cabinet 27 of pressurized steam-jetting nozzle 10 integral body of injection nozzle carrier 11, nozzle plate support component 15 and nozzle plate 16.This heating cabinet 27 is in folding and unfolding pressurized steam-jetting nozzle 10 integral body, and the nozzle bore 16a that makes pressurized steam-jetting nozzle 10 forms hot blast introducing port 27b by constituting towards the elongated cuboid of the comprehensive opening of side on the central portion of this top plate portion 27a.This hot blast introducing port 27b is connected with the warm-air supply pipeline 28 of outside.Utilize fan 28a to be situated between and import and the peace and quiet air of the high temperature that heated by heater 28c, be admitted to heating cabinet 27, heat energetically with the integral body of hot blast to pressurized steam-jetting nozzle 10 by above-mentioned warm-air supply pipeline 28 by filter 28b.

Like this, by integral body heating to pressurized steam-jetting nozzle 10, can prevent to be directed to the pressurized steam of injection nozzle carrier 11 inside or the temperature of superheated vapour effectively and reduce, and keep and temperature required it is sprayed from pressurized steam-jetting nozzle 10 towards fiber web W.As a result, not only can realize fiber interweaving expeditiously, and, can also make the nonwoven fabric form stable that produces, obtain desired intensity and texture.

In addition, according to diagram, at front and back wall 27c, the 27b of the fiber web transfer direction of heating cabinet 27, its lower end contacts with the periphery of sealed roller 29a, 29b.Sealing roller 29a, 29b are the round rollers that has plated resin etc. on the level and smooth round roller of stainless steel or the periphery, can be and rotate freely roller, and the handover speed synchronization of itself and fiber web W is driven in rotation.By disposing described sealed roller 29a, 29b, in the hot blast diffusion that prevents from heating cabinet 27, can prevent the immersion of outer gas, improve the efficiency of heating surface to pressurized steam-jetting nozzle 10.

In addition, in this example, outer gas shield 63 is installed between above-mentioned the 1st conveyer belt 30 and the gettering container 40, this outer gas shield 63 with the corresponding part opening of attraction peristome of holding the gettering container 40 of the 1st conveyer belt 30 relative configurations of transferring body as the load of fiber web W.The front and back end portion of the fiber web transfer direction of this outer gas shield 63 is crooked downwards respectively, so that fiber web W slyness is stably passed through.Like this, by gas shield 63 outside between the 1st conveyer belt 30 and gettering container 40, installing, can prevent that outer gas to immersing from the pressurized steam of pressurized steam-jetting nozzle 10 ejections or the ejection zone of superheated vapour, can make the pressurized steam of ejection or superheated vapour impose on fiber web expeditiously.Its result, the configuration of surface of the nonwoven fabric that produces is more even, and fiber interweaving is dense simultaneously.

Figure 25 represents the another modification of apparatus of the present invention.According to this modification, same with above-mentioned outer gas shield 63, between above-mentioned the 1st conveyer belt 30 and gettering container 40, water vapour reflecting plate 64 has been installed.This steam reflecting plate 64 is that with the difference of above-mentioned outer gas shield 63 above-mentioned outer gas shield 63 has opening and the formation even surface that prolongs along the column direction of nozzle bore 16a in central authorities, and with respect to this, above-mentioned water vapour reflecting plate 64 is to be made of porous sheet material.Now, connect the 2nd conveyer belt 34, fiber web W, the 1st conveyer belt 30 from the pressurized steam or the superheated vapour of pressurized steam-jetting nozzle 10 ejections, the part of this water vapour is just attracted by gettering container 40, it is most launched at above-mentioned water vapour reflecting plate 64 places, remake be used for fiber web W below, fiber around this formation fiber and this is pressed in net it is interweaved.Consequently, the ratio that interweaves of the formation fiber of the following side of fiber web W increases, and can both improve the quality on outward appearance and intensity.

Have again, among the present invention, shown in the arrow of Figure 18, can make pressurized steam-jetting nozzle 10 in the reciprocating motion minutely of its length direction, or make the above-mentioned the 1st and the 2nd conveyer belt 30,34 with the fiber web direction reciprocating motion minutely on the handover road of protruding end net sidelong.Be used for this reciprocating driving mechanism, be omitted in the drawings, for example can adopt the existing net that fourdrinier wire is dragged for paper machine etc. to give the well known organization of oscillation crosswise.The stroke of reciprocating motion in addition (vibration) is advisable about 5mm to the left and right from reciprocating center, and this reciprocating motion number of times can be adjusted arbitrarily 30～300 times/minute scope.Like this, if make pressurized steam-jetting nozzle 10 or make 30,34 reciprocating motions of the 1st and the 2nd conveyer belt, from the pressurized steam of a plurality of nozzle bores ejections of row shape configuration or superheated vapour in the stepless action of fabric width direction in fibroreticulate surface, the surface is not the corrugated apperance, can obtain more evenly neat fiber interweaving and configuration of surface.

According to the inventive method as described above and device, utilization has the pressurized steam-jetting nozzle of simple structure, not only can make the water vapour of high pressure-temperature connect fiber web reliably, also make the both ends open of the length direction of this injection nozzle carrier, particularly, by switch valve 56 (Figure 18) but make this water vapour discharge the opening switch of side, make the occasion of hydrophobic bend pipe line branching simultaneously at the upstream side of this switch valve, when beginning, the manufacturing of nonwoven fabric in advance switch valve is opened, when fresh pressurized water vapour being imported this pressurized steam-jetting nozzle and discharging the opening of side when discharge the outside from above-mentioned water vapour, because utilize this pressurized steam that the internal temperature of injection nozzle carrier is sharply risen, so, the time the when manufacturing that can shorten nonwoven fabric significantly begins.

The manufacturing of nonwoven fabric at the beginning, above-mentioned switch valve 56 just is closed, the condensed water that produces in the inside of injection nozzle carrier is because the opening of discharging side from above-mentioned water vapour by hydrophobic bend pipe pipeline, is recovered into recycling can at any time, so can be continuously and stably make high-quality nonwoven fabric.In addition, in the foregoing description,,, also can use general water vapour according to the material of fibroreticulate formation fiber though used superheated vapour as water vapour.

Claims (56)

1. pressurized steam-jetting nozzle is characterized in that possessing:

One end has the pressurized steam introducing port, the other end that are connected with the pressurized steam supply pipe and has the water vapour outlet that is connected with outside water vapour discharge pipe, has simultaneously along the injection nozzle carrier of the hollow tube-shape of following length direction opening;

Can be configured in removably the said nozzle frame following, have relative and jet elements a plurality of nozzle bores of forming with above-mentioned opening;

The said nozzle frame has condensed water discharge outlet in its underpart.

2. pressurized steam-jetting nozzle as claimed in claim 1 is characterized in that: the injection nozzle carrier of above-mentioned hollow tube-shape is an injection nozzle carrier cylindraceous.

3. pressurized steam-jetting nozzle as claimed in claim 1 or 2 is characterized in that: on the same axis of said nozzle frame inside, configuration can be removed the cylinder-shaped filter of fine foreign matter contained when water vapour imports.

4. pressurized steam-jetting nozzle as claimed in claim 1 is characterized in that: the opening that forms below the said nozzle frame is at the continuous strip opening that forms of the length direction of this injection nozzle carrier.

5. pressurized steam-jetting nozzle as claimed in claim 1 is characterized in that: the opening that forms below the said nozzle frame is the aperture in the oblique trellis formation of length direction of this injection nozzle carrier.

6. pressurized steam-jetting nozzle as claimed in claim 1, it is characterized in that: the said nozzle frame has condensed water discharge outlet at the one end, end with this condensed water discharge outlet side is a cardinal extremity, and the other end of said nozzle frame is with respect to horizontal alignment top tilted configuration.

7. pressurized steam-jetting nozzle as claimed in claim 1 is characterized in that: the said nozzle parts are made of the nozzle plate support component of the nozzle plate with a plurality of nozzle bores and this nozzle plate of support, and the said nozzle hole has a hole.

8. pressurized steam-jetting nozzle as claimed in claim 7 is characterized in that: the said nozzle hole is in the width multiple row configuration of said nozzle plate.

9. pressurized steam-jetting nozzle as claimed in claim 7 is characterized in that: being shaped as of above-mentioned tube hole is cylindric.

10. pressurized steam-jetting nozzle as claimed in claim 7 is characterized in that: the continuous ditch portion that also has reverse frustoconic section continuous on the length direction of said nozzle plate in the tube hole upper end in said nozzle hole.

11. pressurized steam-jetting nozzle as claimed in claim 9 is characterized in that: also have rounding frustum hole in above-mentioned each upper end, hole cylindraceous.

12. pressurized steam-jetting nozzle as claimed in claim 9 is characterized in that: the height of above-mentioned cylinder hole and the ratio of internal diameter are set at 1～2.

13. pressurized steam-jetting nozzle as claimed in claim 7 is characterized in that: the said nozzle hole has in vestibule with prolonging the ring plate that in the heart from the lower end periphery in above-mentioned tube hole.

14. pressurized steam-jetting nozzle as claimed in claim 7 is characterized in that: the thickness of slab of said nozzle plate is 0.5～1mm.

15. pressurized steam-jetting nozzle as claimed in claim 14 is characterized in that: the water vapour ejiction opening internal diameter in said nozzle hole is 0.05～1mm, is spaced apart 0.5～3mm between this nozzle.

16. pressurized steam-jetting nozzle as claimed in claim 1 is characterized in that: the said nozzle parts constitute by having the single part that forms with the lower part: the ship shape depression ditch portion that is communicated with the lower ending opening of said nozzle frame; Along the rectangular cross section ditch portion that the boat bottom of this depression ditch portion forms; Along a plurality of rounding frustums hole that the length direction of this rectangular cross section ditch portion forms in accordance with regulations at interval; The tube cylindraceous hole that forms continuously in the lower end in each rounding frustum hole.

17. pressurized steam-jetting nozzle as claimed in claim 16 is characterized in that: the said nozzle parts are shaped as outstanding flexure plane shape downwards in the lower surface of fabric width direction.

18. as claim 16 or 17 described pressurized steam-jetting nozzles, it is characterized in that: the ratio of above-mentioned tube hole height cylindraceous and internal diameter is set at 1～2.

19. pressurized steam-jetting nozzle as claimed in claim 16 is characterized in that: the water vapour ejiction opening internal diameter in said nozzle hole is 0.05～1mm, is spaced apart 0.5～3mm between this nozzle.

20. nonwoven fabric manufacture method, water vapour introducing port, the other end that uses an end to have to be connected with the pressurized steam supply pipe has the water vapour outlet that is connected with outside water vapour discharge pipe, has simultaneously along the injection nozzle carrier of the hollow tube-shape of following length direction opening; Can be configured in the pressurized steam-jetting nozzle of following, the jet element of said nozzle frame removably with and a plurality of nozzle bores of forming relative with above-mentioned opening, make the formation fiber interweaving by going out pressurized steam from a plurality of nozzle bore continuous injections along fibroreticulate fabric width direction in direction walking, it is characterized in that, comprising:

Import pressurized steam from above-mentioned water vapour introducing port during beginning, simultaneously, discharge this pressurized steam to the outside from this water vapour outlet;

Measure the temperature in the above-mentioned pressurized steam-jetting nozzle;

When the temperature in this nozzle reached temperature required, Jie discharged the road by trap with water vapour and switches to the condensed water drain passageway, and the discharge of above-mentioned water vapour is stopped;

After the discharge of water vapour stops, making the injection nozzle hole continuous walking of fiber net surface, utilize from the pressurized steam of injection nozzle hole ejection and make fibroreticulate formation fiber interweaving said nozzle; And,

Opposition side in fibroreticulate above-mentioned injection nozzle hole attracts to connect fibroreticulate water vapour with attraction mechanism and discharges to the outside.

21. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising: discharge the inner condensed water that produces of this injection nozzle carrier to the outside from the condensed water discharge outlet of the bottom that is formed at the said nozzle frame.

22. nonwoven fabric manufacture method as claimed in claim 20, it is characterized in that, comprise: the end with injection nozzle carrier is a cardinal extremity, the other end of injection nozzle carrier will be discharged to the outside at the inner condensed water that generates of this injection nozzle carrier from the condensed water discharge outlet that is formed at an above-mentioned end simultaneously with respect to the required angle of horizontal alignment top inclination.

23. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising: adopt the water vapour reflection after the water vapour reflecting plate with a plurality of openings makes the above-mentioned fiber web of perforation, fibroreticulate formation fiber is also interweaved from water vapour reflecting plate side.

24. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising: make above-mentioned pressurized steam-jetting nozzle under heating atmosphere, maintain the above temperature of saturated vapor temperature of the water vapour that uses this nozzle.

25. nonwoven fabric manufacture method as claimed in claim 24 is characterized in that, comprising: above-mentioned heating atmosphere forms by importing hot blast.

26. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising:, pressurized steam is sprayed above fibroreticulate with the fibroreticulate top relative configuration of above-mentioned pressurized steam-jetting nozzle and walking.

27. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising:, pressurized steam is sprayed below fibroreticulate with of the fibroreticulate following relative configuration of above-mentioned pressurized steam-jetting nozzle with walking.

28. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising: above-mentioned fiber web is held in porous fibre net load and is transferred body and porous and push to transfer between the body and be held handover.

29. nonwoven fabric manufacture method as claimed in claim 28 is characterized in that, comprising: the water vapour ejection side of above-mentioned pressurized steam-jetting nozzle and above-mentioned fiber web are pushed the interval of transferring between the body and are set in 0～30mm scope.

30. nonwoven fabric manufacture method as claimed in claim 28, it is characterized in that, also comprise: above-mentioned fiber web load is held transfer body and above-mentioned pushing transferred body reciprocating motion on the transverse direction on fibroreticulate handover road, perhaps make the reciprocating motion on the transverse direction on fibroreticulate handover road of above-mentioned pressurized steam-jetting nozzle.

31. nonwoven fabric manufacture method as claimed in claim 20, it is characterized in that, comprise: above-mentioned pressurized steam is temporarily put aside water vapour savings portion in the way that is disposed at the pressurized steam supply pipe, and the dust that will put aside then in the water vapour of above-mentioned water vapour savings portion is discharged to the outside with condensed liquid; And,

To import an end of above-mentioned pressurized steam-jetting nozzle by the pressurized steam of above-mentioned water vapour savings portion.

32. nonwoven fabric manufacture method as claimed in claim 31, it is characterized in that, comprise: in the above-mentioned pressurized steam supply pipe between above-mentioned water vapour savings portion and above-mentioned pressurized steam-jetting nozzle, make it generate superheated vapour the further heating of pressurized steam.

33. nonwoven fabric manufacture method as claimed in claim 32 is characterized in that, making the water vapour pressure that imports to above-mentioned pressurized steam-jetting nozzle is 0.1～2Mpa, and making from the water vapour of above-mentioned pressurized steam-jetting nozzle ejection is superheated vapour.

34. nonwoven fabric manufacture method as claimed in claim 20 is characterized in that, comprising: before utilizing water vapour ejection formation crossed fiber, execution is used for the temporarily fixing pre-treatment of above-mentioned crossed fiber configuration of surface.

35. nonwoven fabric manufacture method as claimed in claim 34 is characterized in that, above-mentioned pre-treatment comprises and applies moisture content.

36. nonwoven fabric manufacture method as claimed in claim 34 is characterized in that, comprising: above-mentioned pre-treatment makes a part of heat fusing of fibroreticulate formation fiber adhere at least.

37. non-woven cloth manufacturing device, by spraying pressurized steam with the relative fiber web of a plurality of nozzle bores of the length direction that is formed at pressurized steam-jetting nozzle to walking, make this fibroreticulate formation fiber interweaving make the device of nonwoven fabric, it is characterized in that having:

Jie is connected the pressurized steam supply source of an end of above-mentioned pressurized steam-jetting nozzle by the pressurized steam supply pipe;

Jie is connected the water vapour discharge pipe of the other end of above-mentioned pressurized steam-jetting nozzle by switch valve;

Be separated by certain interval and hold transfer mechanism to the porous fibre net load that a direction moves, a plurality of pressurized steam-jetting nozzles hole that forms on the above-mentioned pressurized steam-jetting nozzle relative to the nozzle rows of, this pressurized steam-jetting nozzle of crosscut;

This travel mechanism of clamping also is configured in the attraction mechanism of an opposite side with above-mentioned pressurized steam-jetting nozzle.

38. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, above-mentioned pressurized steam-jetting nozzle is any described pressurized steam-jetting nozzle of claim 1～19.

39. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, the integral body of above-mentioned pressurized steam-jetting nozzle is heated in hot blast atmosphere.

40. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, has condensed water discharge outlet in the injection nozzle carrier bottom of above-mentioned pressurized steam-jetting nozzle.

41. non-woven cloth manufacturing device as claimed in claim 37, it is characterized in that, end at the injection nozzle carrier of above-mentioned pressurized steam-jetting nozzle has condensed water discharge outlet, this injection nozzle carrier is a cardinal extremity with above-mentioned condensed water discharge outlet side end, and the end that makes an opposite side is with respect to horizontal alignment top tilted configuration.

42. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, also disposes the water vapour reflecting plate between above-mentioned fiber web and above-mentioned attraction mechanism.

43. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, the walking fibroreticulate above dispose above-mentioned pressurized steam-jetting nozzle.

44. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, the walking fibroreticulate below dispose above-mentioned pressurized steam-jetting nozzle.

45. non-woven cloth manufacturing device as claimed in claim 37, it is characterized in that, above-mentioned fiber web transfer mechanism has that porous fibre net load is held transfer mechanism and the porous fibre net is pushed transfer mechanism, described porous fibre net load is held between the nozzle bore and above-mentioned fiber web that transfer mechanism is disposed at pressurized steam-jetting nozzle, above-mentioned porous fibre net push transfer mechanism and this fiber web load hold this fiber web of clamping between the transfer mechanism, and hold the transfer mechanism coordination with this fiber web load, to transfer fiber web.

46. non-woven cloth manufacturing device as claimed in claim 45, it is characterized in that, also comprise: make the transverse direction reciprocating reciprocating device of above-mentioned pressurized steam-jetting nozzle, perhaps make above-mentioned fiber web load hold transfer mechanism and above-mentioned fiber web is pushed the transverse direction reciprocating reciprocating device of transfer mechanism to fibroreticulate handover road to fibroreticulate handover road.

47. non-woven cloth manufacturing device as claimed in claim 45 is characterized in that, above-mentioned fiber web load is held transfer mechanism and above-mentioned fiber web and is pushed transfer mechanism and be made of a pair of perforated conveyor belt of arranging up and down of mutual driven in synchronism rotation,

Above-mentioned attraction mechanism is in the inboard of above-mentioned any one conveyer belt, is configured in the relative position with the nozzle bore of above-mentioned pressurized steam-jetting nozzle, makes strip attract opening towards above-mentioned conveyer belt.

48. non-woven cloth manufacturing device as claimed in claim 45, it is characterized in that, above-mentioned fiber web push that transfer mechanism and above-mentioned fiber web load holds transfer mechanism any one constitute by the conveyer belt that drives rotation, another is made of the porous swing roller with this conveyer belt driven in synchronism rotation;

Above-mentioned attraction mechanism makes strip attract the inboard of opening towards this conveyer belt or swing roller at above-mentioned conveyer belt and the immediate position of above-mentioned swing roller.

49. non-woven cloth manufacturing device as claimed in claim 45 is characterized in that, has the nozzle bore of adjusting above-mentioned pressurized steam-jetting nozzle and fiber web and carries on a shoulder pole and hold transfer mechanism and/or fiber web is pushed the clearance adjustment mechanism in the gap between the transfer mechanism.

50., it is characterized in that also having and adjust above-mentioned fiber web and push transfer mechanism and hold the interval guiding mechanism at the handover interval between the transfer mechanism as claim 45 or 49 described non-woven cloth manufacturing devices with the fiber web load.

51. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, disposes water vapour savings portion on the pipeline of above-mentioned pressurized steam supply pipe.

52. non-woven cloth manufacturing device as claimed in claim 51 is characterized in that, disposes heating arrangements on the pipeline of the pressurized steam supply pipe between the end of above-mentioned water vapour savings portion and above-mentioned pressurized steam-jetting nozzle.

53. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, on the pipeline of the water vapour discharge pipe between the other end of above-mentioned switch valve and above-mentioned pressurized steam-jetting nozzle, has the trap pipeline of branch therefrom.

54. non-woven cloth manufacturing device as claimed in claim 37 is characterized in that, more leans on upstream one side at the above-mentioned pressurized steam-jetting nozzle than above-mentioned fibroreticulate transfer direction, has the pre-treatment mechanism that is used for temporary transient anchoring fiber net surface form.

55. non-woven cloth manufacturing device as claimed in claim 54 is characterized in that, above-mentioned pre-treatment mechanism is the moisture content bringing device.

56. non-woven cloth manufacturing device as claimed in claim 54 is characterized in that, above-mentioned pre-treatment mechanism makes in the fibroreticulate formation fiber to have at least a part to be heated the heater that fusion is adhered to.

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