An integrally formed ceramic spinneret, a manufacturing process and a cleaning method thereof

Abstract

This invention discloses an integrated ceramic spinneret, belonging to the technical field of spinning equipment. The ceramic spinneret is integrally molded from single-phase or multi-phase ceramic. The raw materials for preparing the ceramic spinneret include: 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives, including dispersants. This invention also discloses the manufacturing process and cleaning method of the ceramic spinneret. The ceramic spinneret of this invention is formed through ceramic injection molding, followed by debinding and sintering. All spinneret channels are formed simultaneously during ceramic injection molding. Compared with traditional processes, it offers higher molding precision. Using ceramic materials provides wear resistance, significantly extending service life. It is also heat-resistant and can be directly cleaned using a calcination method, eliminating the need for solvent cleaning and greatly reducing environmental pollution.

Description

Technical Field

[0001] This invention belongs to the field of spinning equipment technology, specifically relating to an integrated ceramic spinneret, its manufacturing process, and cleaning method. Background Technology

[0002] The spinneret is a core component of a textile machine, and high requirements are placed on its material hardness, wear resistance, smoothness, and precision. Currently, spinnerets are mainly made of alloys, such as gold-platinum alloys, and stainless steels SUS32, SUS27, SUS24, and SUN53. After processing, they undergo a series of surface treatments, such as pure tantalum plating, gold, platinum, and alloy plating, to finally produce the spinneret.

[0003] Spinnerets typically operate at temperatures between 290 and 300°C and frequently require cleaning due to equipment maintenance, material changes, and equipment repairs. Since alloy spinnerets can only withstand temperatures up to 600-800°C (otherwise, metal annealing can cause deformation or a decline in mechanical properties, ultimately leading to spinneret failure), solvent cleaning is commonly used. This involves first immersing the spinneret in triethylene glycol at approximately 100-300°C for 10-24 hours, followed by immersion in a sodium hydroxide solution for 10-24 hours to remove residual solvent and spinning material. Next, the spinneret is calcined at 500-600°C to further remove residual spinning material, and finally, an ultrasonic cleaner is used to clean it.

[0004] The spinneret orifices on a spinneret typically have a diameter of approximately 0.1–0.3 mm and a length of 0.6–5 mm. After repeated use and cleaning, residues and carbon deposits easily accumulate on the fine structures of the spinnerets, eventually leading to blockage. Therefore, current cleaning methods using traditional metal spinnerets cannot effectively and thoroughly remove all residual spinning raw materials. Furthermore, alkaline washing is corrosive to the spinneret; repeated alkaline washing damages the spinnerets, reducing the smoothness of the orifice walls and significantly impacting the quality of the spun products. High-temperature calcination can also cause deformation of the spinneret alloy. With increased use, the inner walls of the spinnerets wear down, and excessive wear affects the precision of the orifices. All these factors affect the precision of alloy spinnerets, resulting in a service life of only about two years. In addition, solvents such as triethylene glycol and sodium hydroxide are serious pollutants, requiring specialized wastewater treatment facilities and measures, causing environmental pollution and significantly increasing production costs.

[0005] In existing technologies, ceramic materials are used instead of alloy materials to make spinnerets. However, due to the characteristics of ceramic materials such as difficulty in forming, processing, and fragility, existing ceramic spinneret technologies all adopt a split molding process. First, the fine structural parts such as the spinneret channels are formed into a green blank with a rough shape through dry pressing or isostatic pressing. After sintering, the spinneret channels and other structures are formed through fine processing, drilling, etc. After fine processing, the fine structures such as the spinneret channels are assembled onto a pre-formed metal main frame to form the spinneret.

[0006] This manufacturing method involves a complex process, high technical difficulty, and low product yield. The process easily damages the ceramic spinneret channels, directly impacting product lifespan, and is also costly. Furthermore, existing ceramic spinneret technology can only produce simple spinneret channel structures with large channel gaps, a small number of channels per spinneret, and large spinneret diameters. This only meets the most basic monofilament production needs and is completely inadequate for producing ultrafine monofilaments and multi-layered multifilaments. Additionally, although some structural elements are made of ceramic, the main frame remains metal. Therefore, cleaning the spinneret still presents the same tedious and heavily contaminated cleaning challenges as with traditional metal spinnerets. Summary of the Invention

[0007] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides an integrated ceramic spinneret, its manufacturing process and cleaning method. The spinneret and all structures such as the spinneret holes are integrally formed by ceramic injection molding process, and then obtained by debinding and sintering.

[0008] To achieve the above objectives, according to a first aspect of the present invention, an integrally molded ceramic spinneret is provided, wherein the ceramic spinneret is integrally molded from single-phase or multi-phase ceramic.

[0009] The raw materials for preparing the ceramic spinneret include: 50~80wt% ceramic powder, 15~40wt% polymer binder, and 0.1~20wt% additives; the additives include dispersants.

[0010] As a further improvement of the present invention, the ceramic powder includes one or more of ZrO2, Al2O3, Si3N4, and SiO2 ceramic powder; and / or,

[0011] The polymeric binder includes one or more of PE, PP, PEG, and PET; and / or,

[0012] The dispersant includes one or more of SA, LDPE, PVC, PETG, and PMMA.

[0013] As a further improvement of the present invention, the additives also include one or more of plasticizers and phthalates.

[0014] As a further improvement of the present invention, the ceramic spinneret has multiple pores, with a number ranging from 2 to 5000; and / or,

[0015] The ceramic spinneret has a channel diameter ranging from 0.01 mm to 3.00 mm; and / or,

[0016] The thickness of the ceramic spinneret ranges from 1mm to 50mm.

[0017] As a further improvement of the present invention, the ceramic spinneret includes an integrally formed first spinneret channel, a second spinneret channel, a positioning hole, and a mounting hole.

[0018] According to a second aspect of the present invention, a manufacturing process for an integrally formed ceramic spinneret is provided, comprising the following steps:

[0019] S1 mixes 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives in an internal mixer, then extrudes and granulates the mixed raw material into feed through a granulator; the additives include dispersants.

[0020] S2 forms the feed material into a green blank through an injection molding machine and a corresponding mold;

[0021] S3 removes the binder from the green body to obtain a pre-fired body;

[0022] S4 sinters the pre-fired body to obtain the ceramic spinneret.

[0023] As a further improvement of the present invention, in S1, the stirring temperature in the internal mixer is 70~220℃, and the stirring time is 0.5~4 hours; and / or,

[0024] In S2, the feeding plasticizing temperature is 70~220℃, and the viscosity after plasticizing is 5000~50000 mPa·s; and / or,

[0025] In S3, the discharge temperature is 100~800℃, and the discharge time is 50~10000 minutes; and / or,

[0026] In S4, the sintering temperature is 1200~1700℃ and the sintering time is 10~600 minutes.

[0027] As a further improvement of the present invention

[0028] The ceramic powder includes one or more of ZrO2, Al2O3, Si3N4, and SiO2 ceramic powder; and / or,

[0029] The polymeric binder includes one or more of PE, PP, PEG, and PET; and / or,

[0030] The dispersant includes one or more of SA, LDPE, PVC, PETG, and PMMA; and / or,

[0031] The additives also include one or more of plasticizers and phthalates.

[0032] As a further improvement of the present invention, the ceramic spinneret has multiple pores, with a number ranging from 2 to 5000; and / or,

[0033] The ceramic spinneret has a channel diameter ranging from 0.01 mm to 3.00 mm; and / or,

[0034] The thickness of the ceramic spinneret ranges from 1mm to 50mm.

[0035] According to a third aspect of the present invention, a cleaning method for an integrally molded ceramic spinneret is provided, applied to the ceramic spinneret, or wherein the ceramic spinneret is obtained using the aforementioned manufacturing process, and the cleaning method specifically comprises:

[0036] The ceramic spinneret is calcined at 900~1200℃ for 5~5000 minutes.

[0037] In summary, the technical solutions conceived by this invention have the following beneficial effects compared with the prior art:

[0038] (1) The integrated ceramic spinneret of the present invention combines ceramic powder, polymer binder and dispersant, which greatly reduces the feed viscosity and makes it easier to fill the cavity during injection molding. Especially for complex structures with hundreds or thousands of spinneret channels on a single spinneret, the spinneret can be integrated in one step by injection molding.

[0039] (2) The integrated ceramic spinneret of the present invention uses ceramic material instead of traditional alloy material. Since ceramic material is a heat-resistant material that can withstand high temperature of 1000~2000℃, the used spinneret can be directly calcined at high temperature to completely gasify and decompose all the spinning raw materials. The entire spinneret cleaning process can be completed through high temperature calcination, which can effectively clean the residue in the spinneret hole without damaging the ceramic spinneret. Finally, the exhaust gas can be simply treated.

[0040] (3) The integrated ceramic spinneret of the present invention has no metal structure. No chemical agents are needed when cleaning the spinneret. Only calcination is required. There is no need for complicated waste treatment devices and measures. While saving cleaning costs, it greatly reduces environmental pollution. The ceramic material also does not need to worry about solvent corrosion, heat deformation and other factors that reduce the product life.

[0041] (4) The integrated ceramic spinneret of the present invention is more wear-resistant than alloys, and requires no assembly or additional surface treatment, saving processing costs and avoiding mechanical damage to the product during processing. This simplifies the process and greatly improves the product yield. Combined with a simpler cleaning method, the service life is greatly increased. The service life of the ceramic spinneret is 3 to 10 times that of the traditional alloy spinneret. Attached Figure Description

[0042] Figure 1 This is a process flow diagram of Embodiment 1 of the present invention;

[0043] Figure 2 This is a product image of the spinneret according to Embodiment 1 of the present invention;

[0044] Figure 3 This is a comparison diagram of the spinneret before and after cleaning in Embodiment 1 of the present invention.

[0045] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-A material spinneret channel, 2-B material spinneret channel, 3-positioning hole, 4-mounting hole. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0047] In this embodiment of the invention, ceramic material is used as the material for making the spinneret. Ceramic injection molding is used, combined with a corresponding mold, to integrally form the entire structure of the spinneret, including the spinneret holes, and then the adhesive is removed and sintered.

[0048] Specifically, the integrated ceramic spinneret of this invention is integrally molded using single-phase or multi-phase ceramics.

[0049] The raw materials for preparing ceramic spinnerets include: 50~80wt% ceramic powder, 15~40wt% polymer binder, and 0.1~20wt% additives; the additives include dispersants.

[0050] In a preferred embodiment, the additives further include one or more of plasticizers and phthalates.

[0051] In a preferred embodiment, the ceramic powder includes one or more of ZrO2, Al2O3, Si3N4, and SiO2 ceramic powder;

[0052] Polymer binders include one or more of PE, PP, PEG, and PET;

[0053] The dispersant includes one or more of SA, LDPE, PVC, PETG, and PMMA.

[0054] Polymer binders are used to bind ceramic powder together, giving it a certain degree of formability. A suitable binder can give the injection-molded green body a certain strength, facilitating demolding and subsequent processing and handling. At the same time, a suitable binder can effectively reduce cracking and breakage of the green body, greatly improving product yield.

[0055] Furthermore, during the mixing of ceramic powder and polymer binder, a suitable dispersant can uniformly coat the powder surface. While preventing agglomeration, the functional groups of the dispersant allow it to effectively combine with the binder in the feedstock, achieving a highly efficient dispersion effect. This significantly reduces the viscosity of the feedstock and improves its flowability. A suitable dispersant can result in extremely low flowability, allowing the feedstock to fully fill the mold during injection molding, ultimately making it possible to integrally mold all channels and other structures on the spinneret in a single step.

[0056] Furthermore, the feed also includes additives such as plasticizers and phthalates, which can be the conventional plasticizers and phthalates used in injection molding processes. Adding plasticizers and phthalates can effectively improve the strength and toughness of the green body obtained after injection molding, making it easier to demold, preventing breakage, increasing the operability in the production process, and greatly improving the product yield.

[0057] In this embodiment of the invention, the preferred amount of ceramic powder is 50-80 wt%. Too much ceramic powder will cause the viscosity to decrease and make it impossible to form, while too little will prevent sintering and make it too dense, resulting in low strength that cannot meet product requirements. Correspondingly, the preferred amount of polymer binder is 15-40 wt%. Too much binder will prevent sintering and make it too dense, resulting in low strength that cannot meet product requirements, while too little binder will cause the viscosity to decrease and make it impossible to form. The preferred amount of additives is 0.1-10 wt%. Too much or too little additives will also cause the viscosity to decrease, ultimately making it impossible to form.

[0058] In a preferred embodiment, the ceramic spinneret has multiple holes, with a number ranging from 2 to 5000.

[0059] In a preferred embodiment, the diameter of the channels in the ceramic spinneret ranges from 0.01 mm to 3.00 mm;

[0060] In a preferred embodiment, the thickness of the ceramic spinneret ranges from 1 mm to 50 mm.

[0061] Furthermore, such as Figure 1As shown, this embodiment of the invention provides a manufacturing process for an integrally formed ceramic spinneret, comprising the following steps:

[0062] S1 mixes 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives in an internal mixer and then extrudes and granulates the mixed raw materials into feed through a granulator.

[0063] S2 feeds the material and shapes it into a green blank through an injection molding machine and a corresponding mold;

[0064] S3 places the green body into the debinding furnace to debind and obtain the pre-fired body;

[0065] S4 The pre-fired body is placed into a sintering furnace for sintering to obtain the ceramic spinneret.

[0066] Preferably, in S1, the stirring temperature in the internal mixer is 70~220℃, and the stirring time is 0.5~4 hours.

[0067] Preferably, in S2, the feeding plasticizing temperature is 70~220℃, and the viscosity after plasticizing is 5000~50000mPa·S.

[0068] Preferably, in S3, the glue discharge temperature is 100~800℃ and the glue discharge time is 50~10000 minutes.

[0069] Preferably, in S4, the sintering temperature is 1200~1700℃ and the sintering time is 10~600 minutes.

[0070] Those skilled in the art will understand that the ceramic spinneret produced in the embodiments of the present invention, when applied in a spinneret machine, can be used alone or in combination of multiple ceramic spinnerets with different structures containing spinneret channels.

[0071] Unless otherwise specified, the raw materials used in the embodiments of the present invention are all commercially available existing materials.

[0072] Furthermore, the cleaning method for the integrally molded ceramic spinneret of this embodiment of the invention is as follows:

[0073] The integrally formed ceramic spinneret is calcined at 900~1200℃ for 5~5000 minutes.

[0074] This invention relates to an integrally molded ceramic spinneret, in which the main body and all spinneret orifices are integrally formed using ceramic injection molding. By simply controlling the temperature and time of high-temperature calcination, all residual spinning raw materials can be vaporized and thermally decomposed, effectively cleaning residues within the spinneret orifices without damaging the ceramic spinneret. The cleaning process eliminates the need for solvents such as triethylene glycol and sodium hydroxide, thus requiring only waste gas treatment and eliminating the need for additional complex and expensive waste treatment equipment and measures, significantly reducing environmental pollution while lowering production and maintenance costs.

[0075] The above cleaning method uses high-temperature calcination cleaning, which prevents carbon residue from accumulating inside the spinneret orifices, greatly extending the service life of the spinneret. Furthermore, because it eliminates the need for acid or alkali washing processes that could corrode the material, it avoids damage to the spinneret orifices and other precision structures, significantly extending the spinneret's lifespan.

[0076] In one specific embodiment of the present invention, a manufacturing process for an integrally formed ceramic spinneret is provided, comprising the following steps:

[0077] (1) Mix 50~80wt% ceramic powder, 15~40wt% polymer binder and 0.1~20wt% additives, then put them into a mixer and stir at 70~220℃ for 0.5~4 hours. Then, extrude the mixed raw materials through a granulator at 70~220℃ and granulate them into feed.

[0078] (2) The feed material is formed into a green blank through an injection molding machine and a corresponding mold;

[0079] (3) Place the green body into the debinding furnace, the debinding temperature is 100~800℃, the debinding time is 50-10000 minutes, and the pre-fired body is obtained;

[0080] (4) Place the pre-fired body into the sintering furnace, sinter at a temperature of 1200~1700℃, and sinter for 10~600 minutes to obtain the sintered body as the final product.

[0081] To better understand the products and methods of the present invention, the following specific embodiments are provided:

[0082] Example 1

[0083] Low-viscosity ceramic feedstock is used in ceramic injection molding. The feedstock components include zirconia ceramic powder, PP binder, LDPE dispersant, and PET plasticizer. By weight, the ratio is 64% composite ceramic powder, 17% binder, 18% dispersant, and 1% plasticizer.

[0084] In this embodiment, the ceramic spinneret is prepared as follows:

[0085] (1) After mixing and stirring the materials according to the formula, put them into a mixer and stir at 180°C for 4 hours. Then, extrude and granulate the mixed raw materials at 170°C through a granulator to form feed.

[0086] (2) The feed material is formed into a green blank through the injection molding machine and the corresponding mold; the plasticizing temperature is 170℃, the viscosity after plasticizing is 10000~20000mPa·S, the injection pressure is 60MPa, and the holding time is 5s;

[0087] (3) The green body is placed in the debinding furnace to obtain the pre-fired body. The debinding temperature is 400℃ and the debinding time is 120 hours.

[0088] (4) The pre-burned body is placed into the sintering furnace, the sintering temperature is 1580℃, the sintering time is 3 hours, and the final product is obtained.

[0089] In this embodiment, the cleaning method for the ceramic spinneret is as follows:

[0090] The used ceramic spinneret is placed in a calcination furnace at a temperature of 1200℃ for 12 hours. Cleaning is completed after calcination.

[0091] Example 2

[0092] When performing ceramic injection molding, a low-viscosity ceramic feedstock is used. The feedstock components include zirconia composite alumina toughened ceramic powder, PE binder, SA dispersant, and PET plasticizer. By weight, the proportions are: ceramic powder 75%, binder 21%, dispersant 3%, and plasticizer 1%.

[0093] In this embodiment, the ceramic spinneret is prepared as follows:

[0094] (1) After mixing and stirring the materials according to the formula, put them into a mixer and stir at 170°C for 2 hours. Then, extrude and granulate the mixed raw materials at 160°C through a granulator to form feed.

[0095] (2) The feed material is formed into a green blank through the injection molding machine and the corresponding mold; the plasticizing temperature is 160℃, the viscosity after plasticizing is 15000~25000mPa·S, the injection pressure is 60MPa, and the holding time is 5s;

[0096] (3) The green body is placed in the debinding furnace, the debinding temperature is 480℃, the debinding time is 120 hours, and the pre-fired body is obtained;

[0097] (4) Place the pre-burned body into the sintering furnace, sinter at 1550℃ for 2 hours to obtain the final product.

[0098] In this embodiment, the cleaning method for the ceramic spinneret is as follows:

[0099] The used ceramic spinneret is placed in a calcination furnace at a temperature of 1200℃ for 12 hours. Cleaning is completed after calcination.

[0100] Example 3

[0101] Low-viscosity ceramic feedstock is used in ceramic injection molding. The feedstock components include alumina ceramic powder, PEG binder, PMMA dispersant, and PET plasticizer. By weight, the ratio is 58% ceramic powder, 31% binder, 7% dispersant, and 4% plasticizer.

[0102] In this embodiment, the ceramic spinneret is prepared as follows:

[0103] (1) After mixing and stirring the materials according to the formula, put them into a mixer and stir at 150°C for 2 hours. Then, extrude and granulate the mixed raw materials at 130°C through a granulator to form feed.

[0104] (2) The feed material is formed into a green blank through the injection molding machine and the corresponding mold; the plasticizing temperature is 130℃, the viscosity after plasticizing is 15000~25000mPa·S, the injection pressure is 40MPa, and the holding time is 5s;

[0105] (3) The green body is placed in the debinding furnace, the debinding temperature is 500℃, and the debinding time is 90 hours to obtain the pre-fired body;

[0106] (4) The pre-burned body is placed into the sintering furnace, the sintering temperature is 1630℃, the sintering time is 2 hours, and the final product is obtained.

[0107] In this embodiment, the cleaning method for the ceramic spinneret is as follows:

[0108] The used ceramic spinneret is placed in a calcination furnace at a temperature of 1200℃ for 12 hours. Cleaning is completed after calcination.

[0109] Example 4

[0110] Low-viscosity ceramic feedstock is used in ceramic injection molding. The feedstock components include alumina ceramic powder, PEG binder, PMMA dispersant, and PET plasticizer. By weight, the ratio is 80% ceramic powder, 15% binder, 4% dispersant, and 1% plasticizer.

[0111] In this embodiment, the ceramic spinneret is prepared as follows:

[0112] (1) After mixing and stirring the materials according to the formula, put them into a mixer and stir at 160°C for 4 hours. Then, extrude and granulate the mixed raw materials at 160°C through a granulator to form feed.

[0113] (2) The feed material is formed into a green blank through the injection molding machine and the corresponding mold; the plasticizing temperature is 200℃, the viscosity after plasticizing is 15000~25000mPa·S, the injection pressure is 40MPa, and the holding time is 5s;

[0114] (3) The green body is placed in the debinding furnace, the debinding temperature is 800℃, and the debinding time is 10 hours to obtain the pre-fired body;

[0115] (4) The pre-burned body is placed into the sintering furnace, the sintering temperature is 1600℃, the sintering time is 10 hours, and the final product is obtained.

[0116] In this embodiment, the cleaning method for the ceramic spinneret is as follows:

[0117] The used ceramic spinneret is placed in a calcination furnace at a temperature of 1200℃ for 30 hours. Cleaning is completed after calcination.

[0118] Figure 2 The figure shows a product image of the spinneret according to Embodiment 1 of the present invention. The integrally formed ceramic spinneret prepared in this embodiment includes integrally formed A-material spinneret channels 1, B-material spinneret channels 2, positioning holes 3, and mounting holes 4 on the spinneret body. The A-material spinneret channels 1 (first spinneret channels) have a diameter of 0.1 mm and number 2442, while the B-material spinneret channels (second spinneret channels) have a diameter of 0.8 mm and number 156. Figure 2 As shown, the entire structure of the ceramic spinneret, such as the spinneret holes, positioning holes, and mounting holes, is integrally molded. Through precision injection molding, ceramic spinnerets with thousands of holes can be formed. Compared with existing ceramic spinnerets, it has no split structure, higher precision, better product consistency, and stable yield.

[0119] Figure 3 The images show a comparison of the spinneret before and after cleaning in Embodiment 1 of the present invention. The results indicate that the integrally molded ceramic spinneret of this embodiment can be effectively cleaned simply by high-temperature calcination, and it exhibits good cleaning effects on residues within the spinneret orifices. In the cleaning process, this invention requires no chemical agents; simple calcination is sufficient to completely remove spinning material residues from the spinneret without carbon buildup, demonstrating significant application value.

[0120] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A one-piece molded ceramic spinneret, characterized in that, The ceramic spinneret is integrally molded from single-phase or multi-phase ceramic. The raw materials for preparing the ceramic spinneret include: 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives; the additives include dispersants; the dispersants include one or more of SA, LDPE, PVC, PETG, and PMMA; the polymer binders include one or more of PE, PP, PEG, and PET. All the spinnerets, positioning holes, and mounting holes on the ceramic spinneret are integrally formed. The ceramic spinneret has multiple spinneret holes, ranging from 2 to 5000; and / or, the diameter of the spinneret holes ranges from 0.01 mm to 3.00 mm. The molding process of the integrated ceramic spinneret includes: S1 mixes 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives in an internal mixer and then extrudes and granulates the mixed raw materials into feed through a granulator. S2 The feed material is formed into a green preform through an injection molding machine and a corresponding mold; the plasticizing temperature of the feed material is 130~200℃, and the viscosity after plasticizing is 10000~25000mPa·S; S3 removes the binder from the green body to obtain a pre-fired body; the binder removal temperature is 400~800℃, and the binder removal time is 600~7200 minutes; S4 sintersects the pre-sintered body to obtain the ceramic spinneret; the sintering temperature is 1550~1630℃, and the sintering time is 120~600 minutes.

2. The integrally formed ceramic spinneret according to claim 1, characterized in that, The ceramic powder includes one or more of ZrO2, Al2O3, Si3N4, and SiO2 ceramic powder.

3. The integrally formed ceramic spinneret according to claim 1, characterized in that, The additives also include one or more of plasticizers and phthalates.

4. The integrally formed ceramic spinneret according to claim 1, characterized in that, The thickness of the ceramic spinneret ranges from 1mm to 50mm.

5. The integrally formed ceramic spinneret according to any one of claims 1-4, characterized in that, The ceramic spinneret includes an integrally formed first spinneret channel, a second spinneret channel, a positioning hole, and a mounting hole.

6. A manufacturing process for an integrated ceramic spinneret, characterized in that, Includes the following steps: S1 mixes 50-80 wt% ceramic powder, 15-40 wt% polymer binder, and 0.1-20 wt% additives in an internal mixer, then extrudes and granulates the mixed raw material into feed through a granulator; the additives include dispersants. S2 The feed material is formed into a green preform through an injection molding machine and a corresponding mold; the plasticizing temperature of the feed material is 130~200℃, and the viscosity after plasticizing is 10000~25000mPa·S; S3 removes the binder from the green body to obtain a pre-fired body; the binder removal temperature is 400~800℃, and the binder removal time is 600~7200 minutes; S4 sintersects the pre-sintered body to obtain the ceramic spinneret; the sintering temperature is 1550~1630℃, and the sintering time is 120~600 minutes; The dispersant includes one or more of SA, LDPE, PVC, PETG, and PMMA; the polymer binder includes one or more of PE, PP, PEG, and PET. All the spinnerets, positioning holes, and mounting holes on the ceramic spinneret are integrally formed. The ceramic spinneret has multiple spinneret holes, ranging from 2 to 5000; and / or, the diameter of the spinneret holes ranges from 0.01 mm to 3.00 mm.

7. The manufacturing process of the integrated ceramic spinneret according to claim 6, characterized in that, In S1, the stirring temperature in the internal mixer is 70~220℃, and the stirring time is 0.5~4 hours.

8. The manufacturing process of the integrated ceramic spinneret according to claim 6 or 7, characterized in that, The ceramic powder includes one or more of ZrO2, Al2O3, Si3N4, and SiO2 ceramic powder; and / or, The additives also include one or more of plasticizers and phthalates.

9. The manufacturing process of the integrated ceramic spinneret according to claim 6 or 7, characterized in that, The thickness of the ceramic spinneret ranges from 1mm to 50mm.

10. A cleaning method for an integrally molded ceramic spinneret, applied to the ceramic spinneret according to any one of claims 1-5, or wherein the ceramic spinneret is obtained by the manufacturing process according to any one of claims 6-9, characterized in that, The cleaning method is as follows: The ceramic spinneret is calcined at 900~1200℃ for 5~5000 minutes.

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