CN211079417U - Production device of P L A polylactic acid perspiring silk-like fiber - Google Patents

Abstract

The utility model relates to a P L A polylactic acid perspire imitative silk fibrous apparatus for producing, apparatus for producing includes drying system, screw extruder, spinning subassembly, side blast apparatus, the device of oiling, corridor, drafting assembly, network ware and the winder that sets gradually according to process flow, wherein, the cross-section of the spinning hole of the spinneret of spinning subassembly is "+" type, "+" type or "rice" type, the aspect ratio of spinning hole is 5 ~ 10, the utility model discloses be favorable to the effective popularization of P L A polylactic acid perspire imitative silk fibre.

Description

Production device of P L A polylactic acid perspiring silk-like fiber

Technical Field

The utility model belongs to the technical field of weaving chemical fiber production, especially, relate to a P L A polylactic acid perspires imitative silk fibre's apparatus for producing.

Background

Polylactic acid (P L A for short) fiber is used as a raw material, the polylactic acid is derived from plants and non-fossil fuel, the fiber has natural degradability, luster and hand feeling similar to real silk, has certain water absorption, is a good fiber material, and has great development potential.

In the prior art, the production method of the perspiring silk-like fiber is mainly prepared by fiber-forming polymer. However, the perspiration imitated silk fiber made of the material is difficult to degrade in soil, and once the material is discarded at will, the environment is easily polluted, so that the perspiration imitated silk fiber made of polylactic acid is adopted to be promoted.

At present, the domestic production of polylactic acid perspiring silk-like fibers is not multiple in technical method, the technical capability is limited, and the quality of the produced polylactic acid perspiring silk-like fibers is poor, so that the effective popularization of the product is hindered.

SUMMERY OF THE UTILITY MODEL

Problem to above-mentioned prior art exists, the utility model provides a P L A polylactic acid perspires imitative fibrous apparatus for producing of silk to solve among the prior art imitative mao fibre by the problem of the environmental pollution that the preparation of fibre-forming polymer caused, in order to do benefit to the effective popularization of polylactic acid perspiring imitative silk fibre.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

the production device of the P L A polylactic acid perspiring silk-like fiber comprises a drying system, a screw extruder, a spinning assembly, a side blowing device, an oiling device, a channel, a drafting assembly, a network device and a winding machine which are sequentially arranged according to a process flow, wherein the cross section of a spinning hole of the spinning assembly in the filament outlet direction is in a plus shape, a star shape or a meter shape, and the length-width ratio of the spinning hole is 5-10.

Further, the drying system comprises a crystallizer and a drying tower, the crystallizer comprises a shell, a feed inlet is formed in the top of the shell and is located right below the storage bin, a impurity removing port is formed in the top of the side portion of the shell, and at least two air inlets are formed in the top of the shell;

introducing hot air through at least two air inlets so as to discharge dust in the polylactic acid raw material falling from the feeding hole from the impurity removing hole;

the side part of the drying tower is provided with at least two air inlets, and drying air is introduced through the at least two air inlets so as to dry the polylactic acid raw material falling into the drying tower and removing dust.

Further, the spinning device comprises a suction device, wherein the suction device is arranged between the spinning assembly and the side blowing device to suck spinning monomers away.

Further, the side blowing device comprises a blowing box body and an air inlet cylinder, wherein a plurality of through wire holes are formed in the top of the blowing box body, through holes and an air net are formed in the bottom of the blowing box body, the air net is arranged on one horizontal side of the through holes, and the air inlet cylinder is arranged below the air net;

the plurality of through hole and the through hole are located in the same vertical direction.

Further, the box that blows has first lateral wall, first lateral wall is close to the wind net, first lateral wall with the wind net is the acute angle setting.

Furthermore, a filtering layer is vertically arranged in the blowing box body, and the top and the bottom of the filtering layer are respectively connected to the top of the first side wall and the air net.

Furthermore, the filter layer is formed by combining a porous filter plate, a filter screen and a honeycomb plate which are sequentially arranged in the box body along the horizontal direction.

Furthermore, the blowing box body is also provided with a second side wall, the second side wall and the first side wall are oppositely arranged, and two doors which are opposite and can be opened are arranged on the second side wall.

Furthermore, the drafting assembly comprises a pre-network device, a first pair of hot roller sets, a second pair of hot roller sets and a tension adjusting godet which are sequentially arranged according to the process flow.

The utility model has the advantages that:

the utility model provides a P L A polylactic acid perspires imitative silk fibre's apparatus for producing of silk, earlier dry polylactic acid raw materials through drying system, polylactic acid raw materials after the drying gets into screw extruder and carries out the melt compression afterwards, during the polylactic acid raw materials after the melt compression gets into spinning subassembly, through spinning subassembly blowout silk bundle, the silk bundle is through cross air blast device afterwards, the device and the corridor that oils cools off, guarantee abundant even cooling, prevent the quench, then the silk bundle is after the draft is tensile, get into the main network ware after, get into the winder again and roll into the spinning cake.

In addition, because the utility model discloses a spinning hole of spinning pack is "+" type, "+" type or "meter" type at the cross-section that goes out the silk direction, and the spinning hole aspect ratio is 5 ~ 10, and the every side arc degree of the silk bundle cross-section of this kind of cross-section spinning hole production is great, ensures fine moisture absorption, perspire effect, and, because this imitative fibrous material of wool is polylactic acid, but has natural degradation nature, and not prepared through fiber-forming polymer, can not cause the pollution to the environment to the problem of the environmental pollution who adopts fiber-forming polymer to cause among the prior art has been solved, thereby be favorable to the effective popularization of P L A polylactic acid imitative wool fibre.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a production device for P L A polylactic acid perspiring silk-like fibers in an embodiment of the present invention;

FIG. 2 is a schematic diagram of the drying system of FIG. 1;

FIG. 3 is a schematic view showing a cross-section of a spinneret hole of a spinneret according to an embodiment of the present invention in a "+" shape;

fig. 4 is a schematic structural view of a cross section of a spinneret orifice of a spinneret plate according to an embodiment of the present invention;

fig. 5 is a schematic structural view showing a cross section of a spinning hole of a spinneret of an embodiment of the present invention in a "meter" shape;

FIG. 6 is a schematic cross-sectional view of the filament bundle of the spinning orifice shown in FIG. 3;

FIG. 7 is a schematic cross-sectional view of the filament bundle of the spinning orifice shown in FIG. 4;

FIG. 8 is a schematic cross-sectional view of the filament bundle of the spinning orifice shown in FIG. 5;

FIG. 9 is a schematic structural view of the side blowing device in FIG. 1;

FIG. 10 is a side view of FIG. 9;

fig. 11 is a schematic flow chart of a production method of the P L a polylactic acid perspiring silk-like fiber of the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Firstly, the embodiment of the utility model discloses P L A polylactic acid perspires silk-like fibre's apparatus for producing.

Fig. 1 is the structure schematic diagram of the production device of P L a polylactic acid perspiring silk-like fiber of the embodiment of the utility model, see fig. 1, the device includes drying system 1, screw extruder 2, spinning subassembly 3, suction device 4, cross-blowing device 5, oiling device 6, channel 7, drafting assembly, network 12 and winder 13 that set gradually according to process flow.

Fig. 2 is the schematic structural diagram of the drying system of fig. 1, and with reference to fig. 2, the drying system 1 of the embodiment of the present invention includes a crystallizer 1.1 and a drying tower 1.2, wherein the crystallizer 1.1 includes a casing, the top of the casing is provided with a feed inlet 1.11, the feed inlet 1.11 is located under the bin a, the top of the side portion of the casing is provided with a impurity removing opening 1.12, and the bottom of the casing is provided with at least two air inlets 1.13. Polylactic acid raw materials enter the crystallizer 1.1 from the stock bin a and the feed inlet 1.11, meanwhile, hot air is introduced into the crystallizer 1.1 through at least two air inlets 1.13, the raw materials are dried by the hot air, and the crystallizer with double air inlets is adopted, so that the provided heat is more sufficient, and the crystallization of the polylactic acid raw materials is realized; meanwhile, in the process of drying the raw materials by the hot air, light impurities such as dust mixed in the raw materials can be discharged from the impurity removing port 1.12 so as to maintain the purity of the polylactic acid raw materials.

In the embodiment of the utility model, can introduce hot-blast crystallizer 1 through forced draught blower and pipeline.

Further, combine fig. 2, the utility model discloses drying tower 1.2's of embodiment lateral part is provided with two at least air inlets 1.21, introduces dry air through two at least air inlets 1.21 to the polylactic acid raw materials after will falling into the drying tower and get rid of the dust is dried.

Because the embodiment of the utility model provides a drying tower 1.2 has also set up two air inlets 1.21, can carry more dry air through the air pump to make the drying effect of polylactic acid raw materials more even stable.

The embodiment of the utility model provides an in, screw extruder 2 can choose for use novel alloy to cover formula and bake the special screw extruder of bimetal that penetrates the technology and handle, takes the mixing head of pin, and draw ratio 25, it has a screw rod district feed end to six district discharge ends, can guarantee like this that the fuse-element is even stable.

In the embodiment of the utility model, the plate diameter of the spinneret of spinning pack 3 is 70 ~ 95mm, and the cross-section of the spinneret hole of spinneret is "+" type (shown in fig. 3), "+" type (shown in fig. 4) or "meter" type (shown in fig. 5), and the end point of spinneret hole reaches the aspect ratio of the aperture at the center of spinneret hole is greater than 5, and the aspect ratio to each "-" at the center of spinneret hole is greater than 5 promptly, can make the every limit of corresponding silk bundle (fig. 6, fig. 7 and fig. 8) cross-section camber of production great like this, ensures moisture absorption, perspire effect.

Further, the embodiment of the utility model provides an in, spinning subassembly adopts the low temperature diphenyl ether of boiling point about 200 ℃ to make heat medium system, and control temperature is 200 ~ 230 ℃. The heating medium system heats the spinning box and the extrusion head, so that the heating medium is circulated fully, and the heating uniformity is ensured.

The utility model discloses suction device 4 sets up in spinning component 3's below for with the spinning monomer siphoning away, in order to avoid influencing going on of follow-up technology, and guarantee the quality of silk bundle.

The utility model discloses suction device 4 can adopt circulating water negative pressure suction to fully take out the monomer.

Fig. 9 is the schematic structure diagram of the side blower in fig. 1, and fig. 10 is the schematic side view of fig. 9, combines fig. 9 and fig. 10, the utility model discloses a side blower 5 is including blowing box 5.1, an air inlet section of thick bamboo 5.2, and blowing box 5.1 top is provided with a plurality of through-filament holes, and this through-filament hole and spinning pack's spinning hole one-to-one sets up, and blowing box 5.1 bottom is provided with clearing hole and net 5.3, and net 5.3 sets up in the horizontal one side of clearing hole, and air inlet section of thick bamboo 5.2 sets up in the below of net 5.3, and a plurality of through-filament holes and clearing hole are located same vertical direction.

When the cooling device is used, tows sprayed from the spinning holes in the spinning assembly pass through the corresponding through-wire holes and are introduced into the blowing box body and then are led out from the through holes, and meanwhile, cooling air is introduced into the air inlet barrel communicated with the output part of the blowing device, so that the tows passing through the blowing box body are cooled.

With reference to fig. 9, in an embodiment of the present invention, the suction device 4 may include a suction tube, one end of the suction tube is located in the blowing box 5.1, one end of the suction tube is open, and the other end of the suction tube is located outside the blowing box 5.1, so as to suck the spinning monomers from the open end to the outside of the blowing box 5.1 for collection.

With reference to fig. 9 and 10, the blowing box 5.1 of the embodiment of the present invention has the first side wall 5.11, the first side wall 5.11 is close to the wind net 5.3, and the first side wall 5.11 and the wind net 5.3 are arranged at an acute angle, so that the first side wall 5.11 forms a guide plate to introduce the cooling wind more efficiently and realize the rapid cooling of the filament bundle.

Combine fig. 9 and fig. 10, the utility model discloses along vertical filter layer 5.4 that is provided with in the blow box 5.1 of embodiment, the top and the bottom of filter layer 5.4 are connected respectively on the top of lateral wall 5.11 and wind net 5.3, and the filter layer can filter the cooling air that directly carries out the heat exchange with the silk bundle, avoids having twine impurity on the silk bundle of high temperature state, influences the quality of silk bundle.

The embodiment of the utility model provides an in, filter layer 5.4 can set up in air inlet box 5.1 with inserting, not only can filter the cooling air that gets into in the box of blowing like this, guarantees the production quality of silk bundle, can also regularly carry out the dismouting to the filter layer and wash, guarantees that the cooling air passes through smoothly.

Further, the utility model discloses filter layer 5.4 can be formed by combining along the level to porous filter, filter screen and the honeycomb panel that sets gradually in the box, can be from outer to interior impurity filtration to equidimension not like this.

Further, combine fig. 9 and 10, the utility model discloses blow box 5.1 of embodiment has second lateral wall 5.12, and this second lateral wall 5.12 and first lateral wall 5.11 set up relatively, are provided with two relative doors 5.13 that can open on second lateral wall 5.12, not only can observe the box is inside to when phenomenons such as the silk bundle knot appears in the inside of box, can operate the silk bundle.

The embodiment of the utility model provides a owing to adopt the forced air cooling mode to cool off the silk bundle, not only can improve the cooling effect of silk bundle, can also improve equipment's spinning speed, improve the output of finished product fibre silk bundle.

Further, combine fig. 9, in the embodiment of the utility model, the blowing box 5.1 is highly for blowing the district with the height that filter layer 5.4 corresponds, and its height is 1500 ~ 2000mm to D type air-out curve, in order to guarantee abundant even cooling, prevent the quench, and blowing box 5.1 highly is the calm zone in the correspondence of spinning box below, and its height is 90 ~ 130mm, and this is because, the calm zone height can directly influence the silk bundle quality, the utility model provides an embodiment calm zone height's setting can avoid the temperature drop too fast, causes the phenomenon that the silk quality is poor.

Further, the embodiment of the utility model provides an in 6 system that oils for the glib talker system that oils, use prevent splashing, low friction, wear-resisting glib talker oils, and the evenness is stable like this, guarantees the dyeing homogeneity.

Further, the embodiment of the utility model provides an in the channel 7 for the natural passageway that passes through of silk bundle for make the silk bundle after oiling oil fully, and prevent to fade, its length can specifically set up as required.

With reference to fig. 1, in the embodiment of the present invention, the drafting assembly includes a pre-networking device 8, a first pair of hot roller sets 9, a second pair of hot roller sets 10, and a tension adjusting godet 11, which are sequentially arranged according to a process flow.

The utility model discloses the silk bundle passes through behind the corridor 7, gets into pre-interlacer 8 earlier, can make the silk bundle knot like this, further reduces the broken end rate.

Among the prior art, every in the draft subassembly is usually for cold roll and the mutual collocation use of hot-rolling, has caused like this that the stretch-draw to the fibre silk bundle is insufficient, is heated unevenly, causes the physical properties of fibre silk bundle to differ great, and breaking strength is low, can not satisfy the requirement of later process, the embodiment of the utility model provides an improve to this.

The embodiment of the utility model provides an in, first pair of hot roller set 9 comprises a hot-rolling branch silk roller, and second pair of hot roller set 10 comprises two hot-rolling to can make fibre silk bundle extension and inner structure can stabilize, eliminated its inside draft stress effectively, improve the shape stability of fibre silk bundle, and improve the breaking strength of fibre silk bundle, reduce the broken end rate of fibre silk bundle.

After passing through the drafting assembly, the tow enters a main network 12 to be screened, and then is wound into a cake by a winding machine 13. The utility model discloses winder 13 mode of traversing is the accurate mode of preventing folding, can fully guarantee that the spinning cake shaping is good, general 8 ~ 12 heads to guarantee enough productivity, winder speed is 2500 ~ 3500 m/min.

In addition, based on above-mentioned P L A polylactic acid perspire silk-like fibre's apparatus for producing, the embodiment of the utility model provides a P L A polylactic acid perspire silk-like fibre's production method is still provided.

Fig. 11 is a schematic flow chart of a production method of the P L a polylactic acid perspiring silk-like fiber of the embodiment of the present invention, and with reference to fig. 11, the production method includes:

s1: providing a polylactic acid raw material;

s2: drying the provided polylactic acid raw material;

s3: conveying the dried polylactic acid raw material to a spinning assembly through a screw extruder, and melting and compressing the polylactic acid raw material through the screw extruder to form a molten polylactic acid raw material;

s4: the polylactic acid raw material in a molten state is sprayed out of tows through a spinning assembly;

s5: the tows sequentially pass through a side blowing device, an oiling device and a channel;

s6: drawing the tows drawn out of the channel by a drawing component;

s7: and (4) after the tows after traction and stretching enter a main network device and a network point, entering a winding machine to be wound into a spinning cake.

The utility model discloses S1 specifically includes:

the utility model discloses the preferred spinning level P L A polylactic acid section that is preferred to the polylactic acid raw materials, average molecular weight is 200000 ~ 300000, and fusing point 173-.

The utility model discloses S2 specifically includes:

because polylactic acid is very easy high temperature hydrolysis, must strictly control the moisture content, through the utility model discloses behind the drying system, need control the moisture content of polylactic acid raw materials below 25ppm to prevent that the raw materials from hydrolysising, cause the spinning quality to descend.

Because polylactic acid thermal stability is poor, and the too high spinnability that influences of drying temperature, consequently, through the utility model discloses during drying system, crystallization temperature control is between 80 ℃ -110 ℃, and drying temperature control is between 80 ℃ -110 ℃, and dry 5 ~ 20 hours. The quality of the dried polylactic acid raw material is stable, and the smooth spinning can be ensured.

The utility model discloses S3 specifically includes:

the utility model discloses screw extruder's a district feed end of screw rod is between 170 ℃ -230 ℃ to six district discharge end temperature control to guarantee that the fuse-element is even stable.

The utility model discloses S4 specifically includes:

because the polylactic acid raw material in a molten state has poor stability, the number of bits and heads of each line of the spinning assembly are designed, and the melt retention time is strictly controlled to be less than 20 min. If the retention time is too long, the degradation is serious, the spinning production is not facilitated, and the quality of the finished yarn is poor.

The embodiment of the utility model provides an in, spinning subassembly's heat medium pipe adopts the low temperature diphenyl ether about boiling 200 ℃ to do the heat medium, and control temperature 200 ~ 230 ℃ to make the heat medium circulation abundant, ensure that the heating is even.

The utility model discloses S5 specifically includes:

the utility model discloses side blast apparatus adopts D type air-out curve to supply air, and the air supply temperature is 18 ~ 22 ℃ to guarantee abundant even cooling, prevent the quench.

The utility model discloses S6 specifically includes:

the utility model discloses the draft subassembly adopts one step of draft, and the hot-roller temperature of first pair of hot roller set is 70 ℃ -100 ℃, and 4.5 ~ 6.5 circles of winding, and the roller set temperature of second pair of hot roller set is 90 ℃ -120 ℃, and the draft multiple is 1.3 ~ 1.8, and 4.5 ~ 6.5 circles of winding, because polylactic acid melting point is low, the thermal stability is poor, and the design temperature should not exceed 130 ℃.

When the tows enter the tension adjusting godet, the drafting multiple is 0.95-1.0.

The utility model discloses S7 specifically includes:

and enabling the tows to enter a main network device to enter a network, wherein the speed of a winding machine is 2500-3500 m/min.

The specific application is as follows:

the production device and the production method are adopted to prepare 50dtex/48fP L A polylactic acid sweat-releasing silk-like fiber, the molecular weight of a P L A polylactic acid slice is 210000, the melting point is 175 ℃, the water content of a dry slice is 20ppm, a phi 95 screw is adopted, 3 positions of each line (each screw) are provided, ten ends of each position are provided, the length-diameter ratio is 25, the heating is carried out in five regions, the temperatures of the regions are 178 ℃ in the first region, 198 ℃ in the second region, 208 ℃ in the third region, 218 ℃ in the fourth region, 228 ℃ in the fifth region, 225 ℃ in a spinning box, the height of a no-wind region is 100mm, the side blowing height of a cooling device is 1500mm, the wind temperature is 21 ℃, the wind speed is 0.35m/s, the specification of a spinneret plate is 85, the section of a silk guide wire hole is phi +, the temperature of a first pair of hot roller groups is 75 ℃, the temperature of a second pair of hot roller groups is 102 ℃, the stretching times are 1.4, and the winding speed is 3300 m/min.

Specifically, the second application is as follows:

the production device and the production method are adopted to prepare 30dtex/24fP L A polylactic acid perspiring silk-like fiber, the molecular weight of a P L A polylactic acid slice is 210000, the melting point is 175 ℃, the water content of a dry slice is 18ppm, a phi 95 screw is adopted, 3 bits of each line (each screw) are provided, ten bits of each bit are provided, the length-diameter ratio is 25, the silk-like fiber is heated in five regions, the temperatures of the regions are 180 ℃ in one region, 200 ℃ in the second region, 210 ℃ in the third region, 220 ℃ in the fourth region, 228 ℃ in the fifth region, 230 ℃ in a spinning box, 120mm in height of a no-wind region, 1500mm in side blowing height of a cooling device, 21 ℃ in wind temperature, 0.35m/s in wind speed, 85 mm in specification of a spinneret plate, phi hole cross section' (B), 80 ℃ in temperature of a first pair of hot roller groups, 100 ℃ in a second pair of hot roller groups, stretching multiple of 1.30, and 1.13% in winding speed of 3400 m/min.

In conclusion, through the utility model provides a pseudo-silk fibre of perspiring of P L A polylactic acid perspire is made to the production method of pseudo-silk fibre, owing to make through the raw materials of polylactic acid material, is not through the preparation of fibre-forming polymer to the problem of the environmental pollution who adopts fibre-forming polymer to cause among the prior art has been solved, is favorable to the effective popularization of the pseudo-silk fibre of P L A polylactic acid perspire.

The following embodiments are preferred embodiments of the present invention, which are only used to facilitate the description of the present invention, and are not intended to limit the present invention in any form, and any person who knows commonly in the art can use the present invention to make local changes or modifications within the scope of the technical features of the present invention, and the technical features of the present invention are not separated from the present invention.

Claims (9)

1. The production device of the P L A polylactic acid perspiring silk-like fibers is characterized by comprising a drying system, a screw extruder, a spinning assembly, a side blowing device, an oiling device, a channel, a drafting assembly, a network device and a winding machine which are sequentially arranged according to a process flow, wherein the cross section of a spinning hole of the spinning assembly in the yarn outlet direction is in a plus type, a star type or a meter type, and the length-width ratio of the spinning hole is 5-10.

2. The device for producing the P L a polylactic acid perspiring silk-like fibers according to claim 1, wherein the drying system comprises a crystallizer and a drying tower, the crystallizer comprises a shell, a feed inlet is formed in the top of the shell, the feed inlet is located right below a storage bin, a sundry removing opening is formed in the top of the side of the shell, and at least two air inlets are formed in the top of the shell;

introducing hot air through at least two air inlets so as to discharge dust in the polylactic acid raw material falling from the feeding hole from the impurity removing hole;

the side part of the drying tower is provided with at least two air inlets, and drying air is introduced through the at least two air inlets so as to dry the polylactic acid raw material falling into the drying tower and removing dust.

3. The apparatus for producing P L A polylactic acid perspiring silk-like fiber according to claim 1, further comprising a suction device arranged between the spinning assembly and the side blowing device to suck spinning monomers away.

4. The production device of P L A polylactic acid perspiring silk-like fibers according to any one of claims 1-3, wherein the side blowing device comprises a blowing box body and an air inlet cylinder, the top of the blowing box body is provided with a plurality of through-wire holes, the bottom of the blowing box body is provided with through holes and an air net, the air net is arranged on one horizontal side of the through holes, and the air inlet cylinder is arranged below the air net;

the plurality of through hole and the through hole are located in the same vertical direction.

5. The apparatus for producing P L A polylactic acid perspiring silk-like fiber according to claim 4, wherein the blowing box body has a first side wall, the first side wall is close to the air net, and the first side wall and the air net are arranged at an acute angle.

6. The device for producing the P L A polylactic acid perspiring silk-like fibers according to claim 5, wherein a filter layer is vertically arranged in the blowing box, and the top and the bottom of the filter layer are respectively connected to the top of the first side wall and the air net.

7. The device for producing the P L A polylactic acid perspiring silk-like fibers according to claim 6, wherein the filter layer is formed by combining a porous filter plate, a filter screen and a honeycomb plate which are sequentially arranged in the box body along the horizontal direction.

8. The apparatus for producing P L A polylactic acid perspiring silk-like fibers according to claim 6, wherein the box body further has a second side wall, the second side wall is opposite to the first side wall, and two opposite openable doors are arranged on the second side wall.

9. The production device of the P L A polylactic acid perspiring silk-like fibers according to claim 1, wherein the drafting assembly comprises a pre-networking device, a first pair of hot roller sets, a second pair of hot roller sets and a tension adjusting godet which are arranged in sequence according to the process flow.

Images