CN1524994A

CN1524994A - Method and equipment for conditioning and heat-setting textile articles

Info

Publication number: CN1524994A
Application number: CNA200410005446XA
Authority: CN
Inventors: A; A·波滋
Original assignee: Pozzi Leopoldo SRL
Current assignee: Pozzi Leopoldo SRL
Priority date: 2003-02-19
Filing date: 2004-02-18
Publication date: 2004-09-01
Anticipated expiration: 2024-02-18
Also published as: EP1449949A3; ITVI20030034A1; EP1449949A2; CN1287036C; EP1449949B1; ATE372407T1; DE602004008682T2; DE602004008682D1

Abstract

A method of conditioning and heat-setting textile products in an autoclave (21) is disclosed comprising: two or more thermal cycles (C1, C2), at least one of which comprising a transfer phase (16) of water present in the autoclave (21) to inside a recovery tank (22), a suction phase (10, 12) to put the autoclave (21) under vacuum, a water return phase (14, 15) from the recovery tank (22) to the autoclave (21), a heating phase (11, 13) of water contained in the autoclave (21) to generate saturated steam, a stay phase (35, 36) in the autoclave (21) for a predetermined time (tc, tp) of the reached conditions of temperature (t11, t13) and pressure (p11, p13), restoring in the autoclave (21) the ambient pressure (Pa) at the end of the last stay phases (36). Each phase of transfer (16) and return (14, 15) of said water occurs spontaneously by suction produced by the difference of pressure existing between autoclave (21) and recovery tank (22).

Description

The equipment that is used for processing method and this method of realization of damping and heat setting textiles

Technical field

The present invention relates to a kind of damping and heat setting textiles of being used for, especially by natural fabric such as wool or cotton or the processing method natural and yarn that synthetic fiber are made.The invention still further relates to the equipment of realizing damping and heat setting method.

Background technology

As everyone knows, the yarn that is wound on cone or the bobbin must stand to absorb the processing that predetermined moisture is measured before being used to loom or circular knitting machine.

In fact, there is appropriate humidity percentage can make that its twisting is stable in the yarn and avoids rupturing when working in loom or knitting machine on the time.

And the yarn stability of appropriate scope can increase the operating rate of machine equally.

Especially, in synthetic blended yarns, can carry out the processing under the yarn high temperature, can also the heat setting synthetic fiber.

By its yarn is absorbed by the maximum water holding capacity that regulation allowed, yarn treatment can also the damping product, its be along with kinds of fibers change transformable because yarn is sold with the fixing price of relative nominal water capacity.

Certainly, be noted that the consumer is fit to price relatively will pay product with higher price if yarn is to have more higherly and sold than the water capacity that is allowed.

On the contrary, if yarn is to have lowlyer and sold than the water capacity that is allowed, the manufacturer then can come to harm, because it offers a kind of yarn that compares the amount paid will be heavier of consumer.

Yarn treatment can be finished in suitable workshop, to keep this its one considerable time state, usually kept 16 to 24 hours with constant humidity in the workshop.

Such processing method is owing to want the long autoclave that falls behind very much and had a saturated vapor of becoming of seeking time to handle to replace, its advantage be than comparatively fast with can handle repeatedly.

According to one of them mode of known technology, be wound on yarn on cone or the bobbin and be by cone or bobbin are placed on and be introduced on the support fixture in the autoclave.

Cycle of treatment is to supply with an air negative pressure stage by autoclave, and the back is a heat setting stage, and wherein under autoclave inner vacuum state, the water yield in its bottom is evaporated.

Particularly, for the cycle of treatment of the prior art that is provided, the autoclave temperature inside that illustrates respectively in conjunction with Fig. 1 and 2 and the forming process of pressure:

-by the negative pressure stage shown in the line 1, during this stage, because the endothermic character of the evaporation process of autoclave internal water, when environment numerical value Pa reduced to P1, temperature was also reduced to final numerical value T1 from beginning numerical value Ti in the autoclave internal pressure;

-by the heating period shown in the line 2, during this stage, because the evaporation of autoclave internal water, temperature rises to numerical value T2 and pressure also rises to numerical value P2;

-by the time of staying when temperature T 2 and the pressure P 2 shown in the line 3, during this period, yarn absorbs humidity and reaches desirable damp condition;

-by the recovery of the autoclave internal environment pressure shown in the line 4, make autoclave and material turn back to corresponding temperature and pressure condition;

-putting the material discharge of having handled at 5 places.

Processing time t changes according to user's requirement and comprises:

-time interval t1, during this period, the negative pressure stage makes the inner vacuum (line 1) that produces of autoclave;

-time interval t2 need be used for the heating high-pressure still and produce saturated vapor (line 2);

-time interval t3 makes yarn absorb the humidity (line 3) that is present in the autoclave;

-time interval t4, wherein the initiation pressure condition is recovered (line 4) in autoclave.

The advantage that the thermal cycle of described type is compared with early stage described processing is very fast, and described thermal cycle is generally and realizes the general mode of all known processing in autoclave.

Yet these circulations also have some shortcomings, and its major defect is to regulate equably yarn, in cone or bobbin outside and inside and to obtain identical damp condition normally impossible at the middle part.

In fact, when processing finishes, the distribution of humidity is to reduce to inside from the outer surface of cone or bobbin regularly in the yarn, and this is owing to be difficult to reach and agglomerate on the yarn at the steam of the cone of coiling yarn or near the interior zone replaces air the bobbin.

Some improved thermal cycles also are known, and wherein said circulation another kind described below similarly circulates, and it usually represents with 6 in Fig. 1 and 2, and it makes and obtain the uniform more moisture distribution of yarn between cone or bobbin inside and outside.

Such improvement thermal cycle has improved the even distribution of humidity, yet can not obtain preferable even distribution.Even in fact have a kind of pair of cycle of treatment, its also can not cone or bobbin the inside and cool region place with because the humidity that cohesion produced of saturated vapor replaces the air that exists.

The equipment that the processing method and being suitable for that is used for damping and heat setting textiles realizes this method can be that PCT application and the corresponding US US6094840 of WO98/21390 known by publication number also.

The method of being quoted as proof is a kind of improvement with respect to early stage described method, because it is removed hot water and it is collected in a recycling can from autoclave after each cycle of treatment, makes in circulation subsequently to re-use, so that reclaim the heat that comprises within it.

Yet such method has the weak point of some confession, and it mainly is after each vapor recycle, from air outside be imported in the autoclave and enter into again will be processed material internal.

Know that clearly the steam and the circulation time in each back that are input to this material internal water down in the air portion branch that enters into material internal also will produce identical condition, so that cause less efficiently to increase the number of times of continuous cycle of treatment.

And, use some pumps to come hot water is transferred to recycling can and vice versa from autoclave.

Summary of the invention

The objective of the invention is to overcome above-mentioned defective.

Especially, the purpose of this invention is to provide a kind of method and apparatus that is used for damping and heat setting textiles, it is compared with some equivalent processing methods of prior art, and it can obtain moisture distribution more uniformly between the inside and outside of product.

Especially, under the situation of reel for yarn on cone or the bobbin, the objective of the invention is between the inside and outside of cone or bobbin, to obtain moisture distribution more uniformly.

Another purpose of method and apparatus of the present invention is to compare with the method and apparatus of the prior art that realizes same loop number to obtain lower air cohesion and moisture distribution preferably in treated product.

At last, but non-least important the objective of the invention is also obtain processing time of reducing by method and apparatus of the present invention.

Above-mentioned purpose be by a kind of in autoclave damping and heat setting textiles, especially be wound on that the processing method of the yarn of cone or bobbin reaches, according to main claim, it comprises the following steps: the yarn that will handle is input in the described autoclave; Seal described autoclave; Finish two or more thermal cycles, one of them circulation comprises continuously: being present in the stage that water in the described autoclave is transferred to recycling can; Be suitable for autoclave is placed negative pressure stage under the vacuum; Make the water that is present in the described recycling can turn back to the stage of returning of described autoclave; The water that is included in the described autoclave is heated to the heating period that produces saturated vapor; Dwell phase in described autoclave, this dwell phase are to be used for the time period that temperature and pressure when reaching the end of each described bringing-up section determines; When last end of described dwell phase, recover the environmental pressure in the described autoclave; Open described autoclave; The product of handling is taken out from autoclave, it is characterized in that described each time water is transferred to the negative pressure that the stage of passing on of described recycling can and described water turns back to described autoclave from described recycling can stage of returning produce by the pressure differential that is present between autoclave and the recycling can and takes place automatically from described autoclave.

Described pass on and return the stage during, the inside of autoclave can not communicate with extraneous air and the saturated vapor air pressure lower than atmospheric pressure is present in the autoclave.

Advantageously, method and apparatus of the present invention can make cone or barrel inner the saturated vapor of better quality is provided and the humidity that therefore obtains so that replace the nearly all air that is present in the yarn.

In further favourable mode, also can obtain moisture distribution more uniformly.

Further advantageously, the processing time of the inventive method also can be less than the processing time of art methods, therefore makes it possible to realize circulation faster with low cost.

Description of drawings

Above-mentioned purpose and advantage will be understood by the preferred embodiment description taken together with the accompanying drawings of the equipment of following method of the present invention and this method of realization, and this embodiment provides as an illustrative example, but is not limited to example, wherein:

Fig. 1 and 2 represents a heat treated cyclic process of prior art;

Fig. 3 and 4 expressions cycle of treatment process of the present invention;

Fig. 5 to Fig. 7 is illustrated in the equipment of different operating stage realization processing method of the present invention.

The specific embodiment

Processing method of the present invention will be described and realize that the equipment of this method represents that with 20 it comprises usually in Fig. 5 and 6 in conjunction with being shown in temperature and pressure figure in Fig. 3 and 4 respectively: autoclave 21; Water recovery tank 22; Vavuum pump 23.

Method and apparatus of the present invention will be further described when being used to handle yarn below; Yet identical method and apparatus also can be used for the processing of other textiless of yarn.

About processing method, it comprises pending yarn cone or bobbin is imported in the autoclave 21, and it is arranged at and makes the free circulation of steam in cone or bobbin on the suitable support fixture.

Preferred but optional, thermal cycle is twice and represents with C1 and C2 in Fig. 3 and 4, what can see at this is to circulate each time to comprise and be suitable for autoclave 21 is placed

negative pressure stage

10,12 under the vacuum, be with being included in the

stage

11,13 of the water heating in the autoclave, to produce saturated vapor subsequently.

There is a

dwell phase

35,36 in end in each heating period, and the temperature, humidity and the pressure condition that keep being reached continue a time tc, tp.Especially in the end of the dwell phase of the second circulation C2, before the processed yarn, environmental pressure Pa is resumed in taking out autoclave 21.

The first thermal cycle C1 includes following detailed stages, and it is in proper order: be suitable for autoclave 21 is placed negative pressure stage 10 under the vacuum, do not have water in it; Water is transported to delivery phase 14 in the autoclave; The heating period 11 of water in the autoclave 21 is to produce saturated vapor; Dwell phase 35, the temperature and pressure condition that its maintenance is reached; The second thermal cycle C2 comprises following phases successively: being present in the stage of passing on 16 that autoclave 21 interior water are transferred to recycling can 22; Be suitable for autoclave 21 is placed negative pressure stage 12 under the vacuum; Be present in the stage of returning 15 that water in the recycling can 22 turns back to autoclave 21; The heating period 13 of the water in the autoclave 21 is to produce saturated vapor; The dwell phase 36 of the condition that temperature and pressure reaches of maintenance.

According to the present invention, water is transferred to the negative pressure that the stage of at every turn passing on 16 of recycling can 22 and described water is transferred to described autoclave 21 from described recycling can 22 stage of at every turn returning 14,15 produce by the pressure differential that is present between autoclave 21 and the recycling can 22 and takes place automatically from autoclave 21.

According to the present invention, described pass on stage 16 and return the

stage

14,15 during, the inside of autoclave 21 can not communicate with extraneous air and the saturated vapor air pressure lower than atmospheric pressure is arranged in autoclave inside.

Referring again to the temperature and pressure diagrammatic sketch of accompanying drawing 3 and 4, can see that the second circulation C2 is that during it, the numerical value of temperature T 11 and pressure P 11 reaches the end of heating period 11, keeps constant after a scheduled time tc of the dwell phase 35 of the first circulation C1.

Referring to the temperature and pressure diagrammatic sketch of accompanying drawing 3 and 4, can see that it is to be lower than the temperature T 12 that the end place in the negative pressure stage 12 of the beginning temperature T i and the second circulation C2 reaches that end in negative pressure stage of the first circulation C1 reaches temperature T 10 in autoclave 21.

Owing to reach pressure P 10 in the end of autoclave 21 inside in the negative pressure stage of the first circulation C1, it is higher than the pressure P 12 that reaches in the end place in the negative pressure stage 12 of the second circulation C2, and these two pressure all are lower than environmental pressure Pa.

With regard to the related heating period, the temperature T 11 that reaches in the end place of heating period 11 of the autoclave 21 inner first circulation C1 is to be lower than the temperature T 13 that the end place of the heating period 13 of the second circulation C2 reaches.

At last, the pressure P 11 that reaches in the end place of the inner first circulation heating periods of autoclave 21 is to be higher than the pressure P 13 that the end place of the heating period 13 of the second circulation C2 reaches, but these two pressure all are lower than environmental pressure Pa.

Obviously, the numerical value of temperature that is obtained in autoclave 21 inside and vacuum is to depend on yarn variety that will be processed and the final feature that will obtain.

In addition, as the function of the yarn variety that will be processed and the final feature that will obtain, corresponding to the processing stage above-mentioned time t10, t14, t16, t12, t15, t13, tc, tp are can be selecteed.

As can be seen, the time span t10 in the negative pressure stage 10 of the first circulation C1 is greater than the time span t12 in the negative pressure stage 12 of the second circulation c2.

And, can find out that also the time span t11 of the heating period 11 of the first circulation C1 is greater than the time span t13 of the heating period 13 of the second circulation C2.

By being shown in temperature and pressure in Fig. 3 and the 4 described method of the present invention that circulates is generally to realize that by the equipment of 20 expressions this equipment is shown among Fig. 5 to 7 by above-mentioned, and it comprises autoclave 21; Water recovery tank 22; Vavuum pump 23, preferred but need not to be the liquid circulation type.

Autoclave 21, jar 22 and pump 23 interconnect by the pipeline that is provided with close/open valve.

Especially, autoclave 21 is connected to the recycling can 22m of water by pass on pipe 24 and the recurrent canal 28 of water of water, and the pipe 24 of passing on of its water is intercepted by valve 24a, and the recurrent canal 28 of water is intercepted by valve 28a.

Especially, can see, pass on the pipe 24 and recurrent canal 28 be to be connected to autoclave 21 at the hydraulic packing 21a place of bottom, its effect is to make water to be transferred to autoclave 21 from jar 22, and does not allow air to enter autoclave inside.

About hydraulic packing 21a, itself be a known type and generally include a pipe wherein 21 flow periods, have the water that plays the barrier film effect to prevent that air from entering from jar 22 to autoclave at water.

For this purpose, also can find out, enter autoclave 21 for fear of air at water during jar 22 passes on, recurrent canal 28 is to connect in the bottom of jar 22, and at this moment being used for water is to connect at the top of jar from the pipe 24 that passes on that autoclave is transferred to jar 22.

Autoclave 21 and jar 22 all are connected on the vavuum pump 23 by the first negative pressure pipe 25 and the second negative pressure pipe 26 respectively, and its negative pressure pipe 25 intercepts by corresponding valve 25a, and its second negative pressure pipe 26 intercepts by corresponding valve 26a.

At last, an auxiliary negative pressure pipe 27 provides a corresponding valve 27a, and its first negative pressure pipe 25 is connected to jar 22.

In autoclave 21 inside, also have heat-exchange device, not shown, it is used to add hot water so that produce saturated vapor.

Be implemented on when handling, processed yarn is imported in the autoclave 21 that does not have water in it.

Any water that might exist is sent in jars 21 by passing on pipe 24, existing water A in jar, as shown in Figure 5.

Corresponding to the starting point in negative pressure stage 10 of the first thermal cycle C1, therefore the yarn of autoclave 21 inside is in beginning temperature T i shown in Figure 3 and is in atmospheric pressure Pa shown in Figure 4.

As shut off valve 24a, 28a when 26a and 27a, in autoclave 21 inside, produces vacuum by the vavuum pump suction air through the first negative pressure pipe 25 when opening out/closing valve 25a.

During the 21 internal negative pressure stages of autoclave, reach the temperature and pressure condition of representing respectively by a T10 and P10, wherein temperature T 10 is the temperature T i that are lower than beginning.Certainly, produce steam expansion by the caused adiabatic cooling of transition stage.

In negative pressure stages 10 end and during as shut off valve 25a, the valve 28a that intercepts water recurrent canal 28 is opened, thereby as shown in Figure 6, the part A a that is included in the water A in the jar 22 is transferred to autoclave 21 automatically, and wherein water is present in the vacuum draw of autoclave inside.

Therefore can see to be water be sent to autoclave 21 because negative pressure and produce and therefore need not to use pump automatically from jar 22.

And, at water from jar 22 to autoclave during stage of returning of 21, jars 22 and exterior, the inner saturated vapor air pressure that produce by vacuum of keeping of autoclave 21 simultaneously.

Certainly, the fact that the existence of hydraulic packing 21a and water are extracted out from jar 22 occurs in its lowest portion, prevents that like this air from entering autoclave.

The humidity that processed material can not lose formerly to be obtained in this mode, and its exactly with the patent described in the specification introductory section in process in the equipment described take place on the contrary.

It is t14 and because the evaporation of a part of water Aa and in the autoclave 21 inner increases that produce pressure and temperatures that water passes on the 14 used times of stage.

It is to finish in the chart that is shown in Fig. 3 and 4 by 30 represented points and corresponding to the condition of the equipment 20 that is shown in Fig. 6 that water flows into autoclave inside.

Begin the heating period 11 of autoclave 21 then by the heater of having described, this heater for example is heat-exchange tube or other known systems.

Heating the used time is t11, reaches some T11 and the P11 that represents respectively in the chart of Fig. 3 and 4 up to the temperature and pressure condition.

During the heating period,, therefore also to further increase in the autoclave internal pressure owing to exist saturated vapor can be filled in the autoclave chamber.

Temperature and pressure condition T11 and P11 keep a period of time tc, make saturated vapor be penetrated in the yarn and condense upon cone or bobbin innermost zone, substitute its inner air.

Because the first independent circulation can not be enough to extract all air that are present in the yarn, will carry out the second similar circulation C2 so after this.

Especially, the water that carry out being present in autoclave 21 be transferred to recycling can 22 another pass on the stage, this is shown in the chart of Fig. 3 and 4, it is by line 16 expressions.This passing on realize by passing on pipe 24, when opening valve 24a, places jar 22 under the vacuum by second negative pressure line 26 and open close/open valve 26a as shown in Figure 7.

In this mode, in the inside of jar 22, produce than being present in the low pressure of autoclave 21 internal pressures, make the water that still is present in the autoclave enter into jar 22 inside like this.

Therefore, can see that can also produce water is transferred to the passing on the stage of jar 21 and need not to use pump from autoclave 21, this usually takes place in prior art system but use pump.

And, the similarity condition of appearance and Fig. 5 in the yarn, and all water A are included in the jar 22.

In conjunction with chart, during such stage, the autoclave internal pressure reduces and temperature also reduces.

Water by point 31 expressions, also is the beginning in autoclave internal negative pressure stage from the end in the stage that autoclave 21 is removed in the chart, its by the first negative pressure pipe 25 at shut off valve 24a with open valve 25a and realize.

Vacuum with respect to the negative pressure stages 10 end place at the first thermal cycle C1 reaches along with the increase of vacuum in the autoclave, when the negative pressure stages 12 finish, has temperature and pressure condition T12 and P12 respectively in autoclave 21 inside.

Water is transferred in the autoclave 21 more then, during by 15 represented stages, produce as has been described mode, promptly, at this moment open close/open valve 28a and shut off valve 25a by vacuum with by recurrent canal 28 with the corresponding stage 14 that is similar to the first thermal cycle C1.

Therefore, in the equipment of position shown in Figure 6, when reaching a little 32, after the time 15, stop to pass on of water.

According to the stage shown in the chart center line 13, being present in the time that water in the autoclave further heats generation is t13, makes it possible to reach respectively temperature and pressure condition T13 and P13.

After this can see the long dwell phase that the temperature and pressure condition is kept, its time that continues is tp.

During such time tp, saturated vapor further is penetrated in cone or the bobbin and condenses upon than the cold-zone, has realized real flushing operation during the water of cohesion substitutes the air molecule that still is present in the yarn.

In fact realized almost all replacing and therefore making cone or barrel inner zone moistening of the air that still exists, humidity percentage equals the numerical value of perimeter.

By in conjunction with two thermal cycle C1 and C2, will obtain uniform more moisture distribution between cone or barrel inner and the outside.

In autoclave 21 internal time tp ends, environmental pressure is resumed and during the represented temperature and pressure condition of maximal end point 33, takes out the yarn of having handled in reaching chart.

Based on foregoing, what will be understood that is that method of the present invention and the equipment of realizing this method can reach all and wants the purpose that reaches.

Especially, by vacuum make water from autoclave 21 to jar 22 pass on automatically and opposite process, can save pump use.

And, hydraulic packing is arranged in autoclave 21 and connect recurrent canal 28 in the bottom of jar 22, make the water that passes on avoid entering autoclave simultaneously, so material does not lose humidity and has shortened circulation timei under handling with air.

Be noted that the Temperature numerical that reason was throughout reached in the stage and the time span in described stage will change as the function of the kind of yarn and the heat setting degree that goes for thereon.

And the improvement that equipment such as against vacuum pump are made can be any kind and the recycling can that more autoclave and/or water can be provided.

When in the scope that falls within additional claim, the variation of described method and apparatus all is considered to be within this patent contains.

Claims

1. damping and heat setting textiles in an autoclave (21) especially are wound on the processing method of the yarn of bobbin or cone, and it comprises the following steps: pending product is input in the described autoclave (21); Seal described autoclave (21); Finish two or more thermal cycles (C1, C2), one of them circulation comprises successively: being present in pass on the stage (16) that water in the described autoclave (21) is transferred to recycling can (22); Be suitable for autoclave (21) is placed negative pressure stage (10,12) under the vacuum; Turn back to stage of returning (14,15) in the described autoclave (21) being present in water in the described recycling can (22); The water that is included in the described autoclave (21) is heated to produce the heating period (11,13) of saturated vapor; Dwell phase (35,36) in described autoclave (21), the temperature when this dwell phase makes the end that reaches each described heating period (11,13) (t11, t13) and pressure (p11, p13) continue a preset time (tc, tp); When last end of described dwell phase (36), recover the environmental pressure in the described autoclave (21); Open described autoclave (21); Treated product is taken out from autoclave (21), it is characterized in that, described each time water from described autoclave (21) be transferred to the described recycling can (22) pass on the stage (16) and described water turns back to stage of returning (14 the described autoclave (21) from described recycling can (22), 15), can take place automatically by the negative pressure that is present in the pressure differential generation between autoclave (21) and the recycling can (22).

2. method according to claim 1, it is characterized in that described passing on the stage (16) and return the stage (14,15) during, the inside of described autoclave (21) can not communicate with extraneous air and the saturated vapor air pressure lower than atmospheric pressure is present in the autoclave.

3. method according to claim 1 and 2, it is characterized in that it comprise two thermal cycles (C1, C2), each thermal cycle comprises successively: being present in pass on the stage (16) that water in the described autoclave (21) is transferred to recycling can (22); Be suitable for autoclave (21) is placed negative pressure stage (10,12) under the vacuum; Be transferred to pass on the stage (14,15) in the described autoclave (21) being present in water in the described recycling can (22); The water that is included in the described autoclave (21) is heated to produce the heating period (11,13) of saturated vapor; Dwell phase (35,36) in described autoclave (21), the temperature when this dwell phase makes the end that reaches each described heating period (11,13) (t11, t13) and pressure (p11, p13) continue a preset time (tc, tp).

4. method according to claim 2, it is characterized in that (it is to be lower than the temperature (T12) that the second end place in negative pressure stage (12) of circulating (C2) reaches that C1, the end in negative pressure stage (10) of first circulation (C1) C2) reach temperature (T10) in described two circulations autoclave (21) in.

5. method according to claim 2, it is characterized in that (C1, end's autoclave (21) pressure (P10) that inside reaches in the negative pressure stage (10) of first circulation (C1) C2) is higher than the pressure (P12) that reaches in the end place in the negative pressure stage (12) of second circulation (C2) in described two circulations.

6. method according to claim 3, it is characterized in that (C1, the temperature (T11) that the end of heating period (11) of first circulation (C1) C2) is reached is lower than the temperature (T13) that the second end place of heating period (13) of circulating (C2) reaches in described two circulations described autoclave (21) in.

7. method according to claim 3, it is characterized in that (C1, the pressure (P11) that the end of heating period (11) of first circulation (C1) C2) is reached are higher than the pressure (P13) that the second end place of heating period (13) of circulating (C2) reaches in described two circulations described autoclave (21) in.

8. method according to claim 3 is characterized in that (C1, the time span (t10) in the negative pressure stage (10) of first circulation (C1) C2) is higher than the time span (t12) in the negative pressure stage (12) of second circulation (C2) in described two circulations.

9. method according to claim 3 is characterized in that (C1, the time span (t11) of the heating period (11) of first circulation (C1) C2) is higher than the time span (t13) of the heating period (13) of second circulation (C2) in described two circulations

10. one kind is suitable for realizing the equipment (20) according to the processing method of claim 1, it is characterized in that it comprises: the autoclave (21) that is used to hold pending yarn; With the water recovery tank (22) that is connected on described autoclave (21) liquid; The vavuum pump (23) that pneumatically is connected with described autoclave (21) and water recovery tank (22).

11. equipment according to claim 10 (20), it is characterized in that, described autoclave (21) by the water that is provided with close/open valve (24a) pass on pipe (24) and be provided with close/open valve (28a) water recurrent canal (28) and be connected to water recovery tank (22) on the liquid.

12. equipment according to claim 11 (20), it is characterized in that described water passes on pipe (24) and is connected in the top of the bottom of described autoclave (21) and described water recovery tank (22) and the bottom that described water recurrent canal (28) is connected in water recovery tank (22) and the bottom of described autoclave (21).

13. equipment according to claim 12 (20) is characterized in that, described water passes on (28) two of pipe (24) and water recurrent canals and all locates to be connected with the bottom of described autoclave (21) being located at the inner hydraulic packing (21a) of autoclave (21).

14. equipment according to claim 10 (20) is characterized in that described vavuum pump (23) is to be connected to the top of autoclave (21) and to be connected to the top of described water recovery tank (22) by the second negative pressure pipe (26) that is provided with close/open valve (26a) by the first negative pressure pipe (25) that is provided with close/open valve (25a).

15. equipment according to claim 14 (20) is characterized in that, the described first negative pressure pipe (25) is connected to the top of described water recovery tank (22) by an auxiliary negative pressure pipe (27).

16. equipment according to claim 10 (20) is characterized in that, described vavuum pump (23) belongs to the pump of liquid circulation type.