TW393359B - Spinneret manufacturing process via molding - Google Patents

Abstract

The uniformity and consistency of capillary holes is very important in manufacturing spinneret. For this reason, high precision machining was used to fabricate the mold insert. The spinneret were then electroformed from the molded structure for mass production. The lifetime of spinneret could be enhanced by hard coating technique. The manufacturing processes of spinneret, including lithography, molding and assembling, were proposed in this patent. The mold can also be made by other process, such as electric discharge machining (EDM), laser machining, or plasma etching.

Description

A7 B7 V. Description of the Invention (Industrial Application Fields) The present invention discloses the use of a photolithographic mold manufacturing method, and the overall process of nozzles and spinning orifices after molding. 15 BACKGROUND OF THE INVENTION Significant progress has been made; the production of mold cores can use lithography to increase precision and mass-produce components with very small tolerances. Not only the cost is reduced, but the consistency of the product is also improved. The mold cores produced by non-lithography methods have tolerances comparable to precision . And the use of lithography can greatly reduce the tolerance 'to less than ten times the precision, depending on the production process. Printed by a member of the Central Bureau of the Ministry of Economic Affairs and the Consumer Cooperatives. The equipment is expensive, so how to use lithography to produce high-precision and consistent nozzles and then convert them into mold cores for mass production is an important issue in this process. Molded spinning nozzles are used in artificial fiber spinnerets (jet nozzles) ) The mechanical shape is one of the major factors affecting the quality of 25 wire drawing.-In general, the thinner the wire is, the national standard of this paper CNS) A4 size (210x297 mm) (Please read the back of the precautions to fill out this page)

A7 B7 V. Description of the invention (2) J nozzle hole ’However, when producing small nozzle holes, there is often a limit on the aspect ratio’, that is, the depth of the nozzle hole is limited. However, the two nozzles with consistent spun openings are an important condition for mass production, otherwise the thickness of the spun silk will be different, which will cause adverse effects in subsequent work. In recent years, the molding technology of small mechanical components has developed rapidly, and the manufacturing accuracy has reached the sub-micron level (optical discs). Not only is the production fast, the cost is low, and the consistency is very high. 10 Know-how. Production of this method of deer screen attack. However, when the diameter of the spray hole is less than 200 microns, generally speaking, the spinning nozzle with a higher price of 5 is still subject to the t column disadvantages: 1. The aspect ratio of the spray hole Reduced below 3 to 1. 2 · The ratio of the diameter of the nozzle hole to the diameter has risen to 100% —by reading the first page and reading the lambda. Note that this page should be printed on the title page. Proportion to hole depth rises to percent to the point of invention 4 The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297 mm) A7 B7 V. Description of the invention (3) The use of bare-toe view to produce touch kernels is the first Resistive fabrication of photolithography, and then 5 copies of this method, and after molding, spinning ~ manufacturing method, can greatly improve the properties of the process: ιι · Increase the aspect ratio of small aperture nozzles. ^ 2. Reduce the tolerance of the orifice diameter on the spinning orifice. ^ 3. Reduce the tolerance of the nozzle hole depth on the spinning mouth. 10 4. Make smooth curved nozzle switching angle. \ s. Can produce all kinds of special-shaped spinning P. Description of Table Example 15 Table 1 Flow chart of the spinning process of the molding method Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling this page) Figure 1 Manufacturing process of molding precision spun 20a .Precision machining nozzles b. Multi-section precision nozzles are filled into the cavity of the metal plate and welded. C. Multi-section nozzles are opened at one end to convert the angle to the mold core. D. After plastic injection molding, the conductive mold is plated on the surface of the injection mold as Electroplated bottom layer The paper size is applicable to Chinese National Standard (CNS) A4 specification (210X297 mm) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 ______ B7 V. Description of the invention (4) ~~ -— e. Film, and control the thickness of this micro-nozzle structure with polishing f. Spread the mechanically processed spinning nozzle body and the micro-nozzle obtained by electroforming to expand and loosen. Fig. 2 Molding precision spinning nozzle process a. Several layers of welding layer on the spinning nozzle body and After the assembled micro-nozzle is joined, the polymer material is injection-molded. B. The mold is ejected after injection. C. The micro-jet hole structure is electroformed based on the conductive brazed layer. D. Remove injection Polymer, micro-nozzle surface and polishing to control the thickness 201. Injection molding of the polymer Figure 3 Molded spinning orifices in the first embodiment of the improved process 15 ^ As molded spinning orifices in the first embodiment (Figure 丄 ^ ~ ⑴ steps of injection After molding ', the conductive layer and non-metallic film are then recorded on the surface of the injection mold. The hard film of the pillar is protected with a polymer. C. The unprotected hard film is exposed by reactive ion etching (RIE). The conductive layer under 20 is exposed. The polymer is removed. Protective layer (these steps can be repeated after the steps of Figures i ~ f) -------- --- 6 Standard (CNS) Secrets (21Qx297 male feet) ~~ (Please read the notes on the back first 1! Please fill in this page again) 'Order · A7 A7 Printed by the Central Standards Bureau of the Ministry of Economic Affairs and Consumer Cooperatives 5. V. Description of the invention (5) Fig. 4 Hard film improvement process a. Example 2 (Fig. 2.a ~ b): Injection molding, and then coating the surface of the injection mold with a conductive layer and a non-metallic hard 5 film b. Protect the pillars with a polymer polymer c. Use a reactive ion to etch (rie) The unprotected hard palate exposes the conductive layer underneath. D. Remove the polymer protective layer (step 10 can be repeated later). Manufacture of spinning mouth). Detailed description of the invention 矣 Μϋϋ is divided into two parts, Xenon plate w plus one gallon, 15 parts. Mold core processing part, but. The higher the depth of the am ~~~~~- -------------- Thicker than the first, high precision ^, high average 4M4 process J :, and the injection or hot press forming k use temperature than the spinning mouth operating temperature, so the mold can be Make the inside low. After the mold core is made, you can make the mold to recover the mold. The injection or hot pressing speed is fast and the cost is low, but the time for electroforming is longer than 2 °. However, after the mold core is converted by injection molding, High aspect ratio structure reduces the aspect ratio of the counter die, and high-speed electroforming can be used. The flow chart of the spinning process of the molding method proposed in the present invention is shown in Table 1. m ml mf nn n ^ i βΛ \) nn ^ mf — ^ ϋ ^ V 1 I. I .., ^ ¾ i Note: Please fill in this page again.) This, .., Zhangzhou standard Tongzhou r country standard (CNS) Α4 specifications (2ιχχ297 public fantasy Λ7 Λ7 printed by the staff consumer cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. ) ~~~ Shown is the use of photolithography and electroforming manufacturing methods to produce precision nozzle holes, and then welding and opening the conversion angle to make multiple nozzle holes and assembly. 5-a method of manufacturing fiber spinning mouth, including the following Steps: (1) Produce small mold kernels by precision machining, fill in the cavities, and use a multi-section assembly and welding to produce large mold kernels with high aspect ratio; (2) Use the above mold kernels for molding; (3) Use steam after demolding. Electroplating, sputtering, electroless plating, or other methods produce a 10 conductive layer, and then electroforming nickel on this conductive layer; (4) After the electroformed spinning plate is polished to control the hole depth, it is joined with the spinning body The spinning mouth is made. And the above-mentioned manufacturing method of the taper spinning method is strict. Injection molding, or hot pressing; where the spun joint is made by high-temperature diffusion bonding or high-temperature brazing. The precision processing method produces small mold cores, including X-ray deep (LIGA), laser processing, and electrical discharge. Processing or reactive ion etching, etc. Among them, before the electrospinning structure, evaporation, stele plating, electroless plating, or electroplating method 20 can be used to coat a conductive hard metal film or a metal film containing ceramic magnetic powder. "Electroforming" to enhance the hardness of the nozzle surface. After molding the nozzle hole and before the electroforming nozzle hole, the surface of the injection mold is plated with a non-metallic hard film; (This page) --1 „-; --II ---_---: ------------- The size of the paper used in this edition applies to the Chinese National Standard (CNS) A4 (210 X 297 mm) ) A7 A7 15 Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 20 B7 V. Description of the invention (7) After protecting the spray nozzle cylinder part, the reactive non-conducting surname will be used to expose the metal at the bottom of the non-conductor, and The technology of electroforming from metal layer. A method for making fiber spinning mouth It includes the following steps: (1) Production of small mold cores by precision machining, and filling in cavities to produce large mold cores with high aspect ratios using multi-section assembly welding; (2) Electroplating, sputtering, etc. on the spinning body One to multiple layers of conductive film are welded, and the spinning nozzle body is aligned with the nozzle hole mold for injection molding; (3) The mold kernel is separated from the spinning hole body; then the body is placed in the electroforming nozzle in the electroforming nozzle Part; < 4) After the casting is completed, the high temperature and high pressure are added to make the electroformed layer and the spinning body strong due to the welding layer, and then the polishing nozzle is controlled by polishing. In the method for manufacturing a fiber spun mouth, the molding method described above can be used for injection molding, or color forming; the towel can be made into spun π, which can be welded at high temperature, or brazed at high temperature. The production method of Xiaolairen by Caicai precision processing method includes the father's fine engraving (stone monument, laser processing, electrical discharge processing, or reactive ion money engraving, etc.). The laser spinning structure can be used before inspection, frequency, scale money, silk ore Ways This Paper Scales Money_ 家 _

(谙 Please read the precautions on the back before filling in " this page] '衣-

， 1T A7 A7 Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the invention (8) Electroplated hard metal film or ceramic film containing ceramic magnetic powder and then electroformed to enhance the hardness of the surface of the nozzle. After forming the injection hole and before the electroforming injection hole, 'the non-metallic hard film is on the surface of the injection mold; after protecting the nozzle hole part with polymer 5', the substrate non-conductor is etched out by reactive ion etching Metal and electroforming technology starting from metal layers. Mould manufacture 10 The density of the orifices on the spinneret of general fine denier fiber is about 2 orifices per square centimeter. The density of orifices produced by photolithography can be increased ten times (approximately 20 per square centimeter), which increases production The efficiency of the nozzle hole. At the same time, the production of spinning orifices by photolithography can also greatly reduce the aperture tolerance of the nozzle holes. 15 Precision Nozzle Manufacture Nozzle holes with a diameter of less than 200 microns are processed on the metal body. Nozzles can penetrate or leave a thin metal seal at the bottom of the metal cylinder. The shape of the cylinder 20 can be circular or any shape. Easy to connect and position. Column direction varies from 0.5 mm to several mm depending on the process. The nozzle hole can be made by X-ray deep and electroforming or other methods, as shown in Figure 2 (a); the nozzle holes of the mold core assembly according to the spinning opening are distributed on the metal plate to process the above-mentioned columnar cavity, and then the nozzle is viewed. Column height and cavity depth (usually the number of dishes ——f ---: --- 'clothing ---- order (please read the precautions on the back before filling this page) This paper The standard is suitable for towels and households (CNS) μ specifications (卩 敝 'public fantasy --- the above-mentioned nozzle column is filled with people-at most sections. After filling, the nozzle column and the metal plate are brazed. The solder joint is shown in Fig. I (b). When it is hard, and the metal layer is sealed at the bottom, it is called the stopper infiltration nozzle (other Shanglang nozzles can be removed by the conversion angle process if there is solder penetration). After filling up, Lai Rensi touches the face with prostitutes. After the surface is polished, the mold area is transformed by or electric discharge machining to make the conversion angle as shown in Figure 1⑹. The conversion angle can use the original nozzle hole as the center point, so it can be reduced. The time required for positioning. Molding spinning method The first example of the spinning method is a thin plate of electroformed precision micro-nozzles, which is then diffusely joined to the spinning body. This joint must be aligned, but the thickness of the sheet is thick. Degree is easy to control. Due to the conversion of the lead angle, the alignment accuracy can be reduced to ten micrometers without increasing the cost. The second embodiment of the molded spinneret is to use the electrical conductivity of the spinneret body (usually stainless steel). Nozzle joining, ejection of the nozzle post, and electroforming directly on the spinning body after demolding. However, because the electroforming material is brocade, it must be subjected to high temperature joining treatment to enhance the bonding force. The third embodiment of the molding spinning is the first embodiment. With the hard film part A7 and B7 of the second embodiment, the description of the invention (10 physical process, the good film resistance of 15), the first embodiment is made by Shanglairen, and the molding method can be injection molding or hot pressing. 2 After the mold _ evaporation, still, no electricity, other methods to produce a conductive layer as shown in Figure 1 (⑴), and electroforming on this conductive layer is shown in Figure 1 (e). 3. Previous step_ Money can be plated, laminated, electrolessly forged or electro-forged with a conductive hard metal film or a metal grate containing ceramic magnetic powder. The electroformed spinneret sheet is polished to control the depth of the hole, and is then carried out with the spinneret body. Fig. 1 (f) shows the spun joint made by diffusion diffusion bonding or brazing at high temperature. Please read the item of interest and then # ’clothing I I order in the Ministry of Economic Affairs—ii 消 —printed by the company

In the second embodiment, the interface between the spun orifice body and the orifice plate is superimposed to a multi-layer welded conductive film by electric recording, forging, etc., and then the spun orifice body and the orifice die core are aligned and clamped, and the plastic is formed by injection molding or hot pressing. Squeeze into the injection hole of the mold kernel as shown in Figure 2 (a). 2. Separate the mold core from the spinneret body as shown in Figure 2 (b). i Paper size is suitable for towels _ _home; CNS) " μ specifications uuTxJIfp- A7 A7

V. Description of the invention +1) 3. The electroforming nozzle hole directly placed in the electroforming tank is shown in Figure 2 (c), as shown in Figure 2 (d). 15 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 20 Or, a layer of conductive hard metal film or metal powder containing ceramic magnetic powder is used for steaming, splatting, electroless plating or electroplating, and then electroforming. 5 4 · After the electroforming is completed, the high temperature and high pressure are added to make the electrical layer and the spun joint body strongly bonded due to the welding layer. The most depth is the depth of the spray hole. This method uses a non-conductive hard film treatment. In order to improve the abrasion resistance of the nozzle holes manufactured in the first and second embodiments. (a) · Hard film processing process of the first embodiment 1. As shown in the figure! After the molding step shown in the figure is corrected, the surface of the injection mold is then plated with a conductive layer to a metal hard film as shown in Figure 3 (a). 2. Coating the nozzle part with polymer to protect the non-metallic hard film, as shown in Figure 3 (b). 3. Use the reactive ion side or coin braid to remove the non-metallic hard film distributed on the bottom layer and expose the part of the metal conductive layer as shown in Figure 3⑹. The polymer is removed as shown in Figure 3 (< ^). 5 · Then it can be repeated later. Figure 1 above can be used to make the spun 〆_13 This paper size applies the Chinese National Standard (CNS) A4 specification (210 × 297 mm) ( (Please read the notes on the back before filling out this page)

A7 B7 V. Description of the invention (12) (b) · Hard film processing process of the second embodiment 1. As shown in Fig. 2, after the injection molding process, the surface of the injection mold is plated with a conductive layer and a non-metallic hard metal. 4 (a) 5 as shown. 2. Coat the nozzle part with a polymer to protect the non-metallic hard film, as shown in Figure 4 (b). 3. Use reactive ion etching or solution etching to remove the non-metallic broken film distributed on the bottom layer, and expose the metal conductive layer as shown in Figure 4 (c) 10. 4. Remove the polymer as shown in Figure 3 (d). 5. Subsequently, the above-mentioned steps of FIG. 1 can be repeated to manufacture the spinning mouth. 15 (Read the notes on the back before filling in this page)

Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 20 25 _14 This paper size applies to the Chinese National Standard (CNS) A4 (21〇 × 297 mm) A7 B7 V. Description of the invention (丄 3) Table 1 Precision nozzle manufacturing > more Nozzle hole assembly lithography and electroforming manufacturing Welding and open-angle conversion injection molding The spinneret body is coated with brazing layer and clamped with the injection hole die core. C After plating, the conductive layer is injection molded. 1 (Example 3) Hard film Treatment I > Separating the mold core from the spinneret body, the electroformed orifice plate (Example 3), hard film treatment (please read the precautions on the back before filling this page)

、 TT nozzle hole sheet and spinning mouth diffused. Electroformed nozzle hole structure polishing control nozzle hole thickness. Printed and polished by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. Light control nozzle hole thickness. (Polymer) (Example 1) 15 Polishing control nozzle hole size (Example 2) This paper size applies Chinese National Standard (CNS) A4 specification (210X 297 mm)

Claims (1)

2. 3. 4. Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 5. A method for manufacturing fiber spinning mouth, including the following steps: (1) · Production of small mold kernels by precision processing, and filling in holes to use multiple sections Assembly and welding to manufacture large mold cores with high aspect ratios; (2> 'Using the above mold cores for molding; (3> · Evaporation, sputtering, electroless plating or other methods to produce a conductive layer after demolding, and then conductive here Electro-casting is performed on the layer; '(4) · The spun sheet after electroforming is polished to control the depth of the hole, and then joined with the spun body to make the spun spout. Method, in which the molding method can be used for injection molding or hot pressing: For example, the method of manufacturing fiber spun joints in the first patent application range, wherein the bonding method can be high temperature diffusion bonding, or high temperature brazing-a method of manufacturing fiber spun joints. The method includes the following steps: (1) · Production of small mold cores by precision machining, and filling in cavities to manufacture large mold cores with high aspect ratios using multi-section welding; (2) · Electroplating on the spinning body, Sputtering and other methods _ Layer-to-multilayer welding conductive film, this spinning spout body and nozzle orifice are clamped in position for injection molding; (3>. Separating the mold core from the spinning spout body; then put the body into a nickel electroforming tank for electroforming Nozzle part; (4) After the electroforming is completed, add high temperature and high pressure to make the electric reed layer and the spinneret body strongly bonded due to the welding layer, and finally control the spouter orifice depth by polishing. The above-mentioned one-layer to several-layer film of the square material of the fiber spinning mouth is selected from among: chromium, silver, steel, osmium, and alloys of various possible proportions of these metals. Technology of conductive layer and high-temperature solder.w㈣contact㈣ .................. ………… Θ: (Please read the precautions on the back before filling this page) 、? This paper scale towel ® ® S Standard (CNS) A4 · Specifications (210 X 297 Male; A- " _ The scope of patent application 6 ^ tit, ® # 1 The method for manufacturing fiber to σ, precision machining methods include X-ray deep (LIGA), Ray 7 such as discharge guard or reactive ion side, and so on. The method for manufacturing the fiber spinning mouth described in item 4 includes the X-ray deep (LIGA), or the reactive ion side, and so on. ^^ The method for manufacturing fiber spinning mouth described in item i of the patent. Secondly, before spinning the structure, a conductive hard metal film may be applied by steaming shovel, sputtering, electroless or electroplating, or containing Then, the metal film of the magnetic powder is further electroformed to enhance the hard surface of the spray hole surface. For example, please refer to the patent for the method of fabricating fiber spun spouts described in Item 4. Before the electrospun spun structure can be steamed, base iron, electroless plating, or electro-forging, a layer of conductive hard material can be used on the ship. Metal film, or ceramic film containing ceramic magnetic powder, and then electroformed to enhance the hardness of the nozzle surface. 10 11 The method of manufacturing fiber spinning mouth as described in item 1 of Shenyang Patent Fanyuan ', before forming the injection nozzle and electroforming, the non-metal hard film is plated on the surface of the injection mold before the hole is formed, protected by a polymer material. After spraying the body portion, the substrate non-body residue is then exposed to metal by reactive ion etching, and electroforming is started from the metal layer. The method of manufacturing fiber spinning as described in item 4 of the patent application park is printed by the shelling consumer cooperative of the Central Bureau of Accreditation of the Ministry of Economic Affairs. Hard gland; after protecting the nozzle pillar part with polymer material, the substrate non-conductor is exposed to the metal by reactive ion etching, and the technology of electroforming is started from the metal layer. L paper size applies to China National Standard (CNS) A4 (210x297 mm)