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Advanced Electrospinning Apparatus And Method Utilizing Slit Mechanism For Precision Nanofiber Fabrication

Abstract: The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication comprises a base table (101) providing a stable platform for the assembly, four main pillars (102) attached to the base table, and four additional pillars (103) parallel to the main pillars, providing support and stability to a housing for electrodes (104). Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112) have a slit or counter bore casing (106) with a hexagonal form, allowing controlled release and distribution of polymer solution. A moving carriage (107) houses the conductive metal hollow pipes (105), enabling reciprocating motion driven by a screw, servo motor, or belt mechanism (108). The apparatus includes a top frame (110), a vertical shaft (111), and a winding and rewinding mechanism (113) for the compliment.

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Patent Information

Application #
Filing Date
07 January 2025
Publication Number
05/2025
Publication Type
INA
Invention Field
TEXTILE
Status
Email
Parent Application

Applicants

Nanospin Technologies LLP
A-4, Kalpataru Society Mirambica School Road, Naranpura,Ahmedabad Gujarat, India-380013

Inventors

1. Mr. Parav Panchal
12, Subhash Society B/H Ishwarbhuvan Hall, Navrangpura, Ahmedabad Gujarat, India-380009
2. Mr. Naman Barot
A-4, Kalpataru Society Mirambica School Road, Naranpura, Ahmedabad Gujarat, India-380013
3. Mr. Neel Panchal
12, Subhash Society B/H Ishwarbhuvan Hall, Navrangpura, Ahmedabad Gujarat, India-380009

Specification

Description:Title of Invention
Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication

Field of Invention
The present novel invention relates to the technical field of electrostatic spinning, more particularly it pertains to an advanced electrospinning machine and method for efficient, scalable, and consistent nanofiber production using a slit/counterbore based mechanism with enhanced production throughput and uniformity.

Background of Invention
Electrospinning is a versatile technique employed in the production of nanofibers, offering a range of applications across various industries, including filtration, biomedical, textiles, and electronics. However, traditional electrospinning mechanisms have been plagued by several challenges that hinder their efficiency and limit their effectiveness. One of the primary issues encountered is clogging, which frequently occurs in needle-based systems and results in time-consuming maintenance and cleaning procedures. Additionally, non-uniform fiber formation, solvent evaporation, and complex operation further complicate the electrospinning process.
Existing electrospinning machines often utilize open polymer chambers, leading to changes in viscosity during operation and affecting the final outcome of nanofibers. The use of static or moving cords or wires in current technologies also presents limitations in terms of polymer deposition rates and issues with polymer layering, hindering continuous fiber generation. Furthermore, the single electrode system in existing machines restricts the use of different polymers simultaneously, limiting the multi-functionality of nanofibers.
Traditional electrospinning systems rely on needle-based mechanisms to generate fibers from polymer solutions. However, these conventional systems face several challenges, including frequent needle clogging, non-uniform fiber formation, and limited output rates. The needle clogging issue is particularly problematic, as it requires frequent maintenance, leading to downtime and reduced productivity. The wire or cord-based systems used in some machines also suffer from lower output rates and issues with polymer layering, further hindering the continuous generation of high-quality nanofibers.
While needleless electrospinning processes have been introduced as an alternative to overcome some of these challenges, they come with their own set of drawbacks. These systems often suffer from lower control over fiber diameter and distribution, leading to inconsistent fiber quality. Additionally, needleless methods can result in lower throughput and efficiency, as the absence of a controlled nozzle or slit can cause uneven fiber deposition and waste of the polymer solution.
An invention mentioned in patent application number CN113046845A discloses a slit type electrostatic spinning device, which comprises a conductive seat, wherein the conductive seat is connected with a high-voltage power supply, an insulating cover is further connected onto the conductive seat, a liquid storage cavity is formed between the insulating cover and the conductive seat, an annular slit is formed in the insulating cover and is communicated with the liquid storage cavity, an insulating liquid inlet pipe and an insulating return pipe are further connected onto the conductive seat, one end of the insulating liquid inlet pipe is communicated with the liquid storage cavity, the other end of the insulating liquid inlet pipe is connected with an output port of a liquid supply pump, one end of the insulating return pipe is communicated with the liquid storage cavity, and the other end of the insulating. The invention can stably generate high-quality nano fibers and has higher production efficiency.
An invention mentioned in patent application number CN113235173A discloses electrostatic spinning equipment, which comprises a spinning box, spinning electrodes, a connecting rod, a rotation driving part and a collecting electrode, wherein the spinning electrodes comprise a plurality of unit electrodes; the unit electrodes are connected with the rotation driving part through connecting rods; the spinning box is used for containing spinning solution; the rotation driving part is used for driving the unit electrodes to rotate, enabling the unit electrodes to enter the spinning box to take spinning solution, and driving the unit electrodes stained with the spinning solution to rotate out of the spinning box, so that the spinning solution forms nano fibers between the collecting electrodes and the unit electrodes; the collecting electrode is used for collecting the nano fibers to form a nano fiber film. The unit electrode passes through the connecting rod in this application and is connected with rotation drive part, through rotating the rotatory entering of drive part and roll out the spinning case, is stained with between unit electrode and the collecting electrode of spinning solution and does not have any other part, cannot produce any influence to nanofiber's production process, and the nanofiber direct deposition is in collecting electrode department to make the nanofiber membrane homogeneity that collecting electrode department formed good, the high quality.
An invention mentioned in patent application number CN117535805A discloses a needleless electrostatic spinning device with a shearing mechanism. The device comprises a shell, wherein a liquid storage cavity is arranged at the upper part in the shell, a shearing rotor is arranged in the liquid storage cavity, and the shearing rotor is driven to rotate by a driving mechanism connected with the lower end of the shearing rotor; the side wall of the liquid storage cavity is provided with an infusion channel, and the liquid inlet end of the infusion channel is connected with an infusion pump; a collecting screen for collecting nanofibers is arranged right above the shearing rotor, and a negative spinning electrode is connected to the collecting screen; and the outer side wall of the shell is connected with a positive spinning electrode. According to the invention, the spinning solution in the narrow slit is sheared and oriented by the shearing rotor, so that the volatilization of the solvent is less, and the influence on the concentration of the spinning solution is reduced; according to the invention, the shearing rotor is adopted to enable the spinning solution to undergo shear thinning, so that the surface tension of the spinning solution is reduced, jet flow is easier to form under the action of an electric field, and greater production efficiency is obtained.
To address these limitations, the present novel invention introduces a novel and innovative solution: a slit base electrospinning machine. The present novel machine has been meticulously designed to overcome the challenges faced by traditional electrospinning technologies. By replacing needles with a slit base mechanism, the issue of clogging is effectively eliminated, significantly reducing maintenance requirements. Additionally, the novel design enhances fiber uniformity and production rate while also providing versatile control over processing parameters.
The slit base mechanism, combined with a moving and/or static carriage system, ensures uniform fiber formation on a large scale while also increasing the production rate exponentially. The present novel invention has ability to accommodate different polymers simultaneously that enhances its versatility. The present novel invention, with its slit base mechanism and innovative features, provides a revolutionary approach to nanofiber production, offering enhanced control, efficiency, and versatility while also reducing maintenance requirements.

Objectives of invention
• Principle objective of the present novel invention is to achieve consistent and uniform nano fiber production by utilizing a slit-based mechanism that minimizes common issues such as clogging and non-uniform fiber deposition.
• Further objective of the present novel invention is to increase the throughput of nano fiber production by integrating a moving and/or static carriage system and precise flow control mechanisms, thereby making the process more efficient and scalable for industrial applications.
• Another objective of the present novel invention is to develop an electrospinning machine that can be easily scaled to accommodate varying production needs while maintaining high-quality output across different applications.
• Another key objective is to design a machine that simplifies the electrospinning process, reducing the complexity of operation and maintenance, making it accessible for widespread use in various industrial settings.
• Further objective of the present novel invention is to enable continuous and automated nano fiber production, reducing downtime and manual intervention, thereby optimizing production efficiency and consistency.
• Another objective of the present novel invention is to enhance the safety and reliability of the electrospinning process by incorporating robust structural components, precise control mechanisms, and safety features such as limit switches to prevent mechanical overrun and other operational hazards.
• Further objective of the present novel invention is to provide an electrospinning system that significantly increases the rate of nano fiber production compared to conventional needle-based systems, making it suitable for industrial-scale applications requiring high throughput.
• Another objective of the present novel invention is to ensure the production of uniformly structured nano fibers by optimizing the electrospinning process, resulting in consistent fiber morphology across the entire substrate.
• Further objective of the present novel invention is to provide a machine that can simultaneously handle multiple polymer solutions, enabling the fabrication of multifunctional nano fibers with diverse properties for various applications.
• Another objective of the present novel invention is to provide the ability to finely control fiber morphology by adjusting key processing parameters such as electrode distance, carriage speed, and polymer viscosity, allowing for customization based on specific application needs.
• Further objective of the present novel invention is to develop a user-friendly machine that is easy to operate, with features that allow it to be scalable for use in both small-scale research environments and large-scale industrial production settings.

Summary
The present novel invention introduces a novel electrospinning machine designed to address the challenges of traditional electrospinning technologies. By employing a unique slit base mechanism and a moving and/or static carriage system, the machine offers improved control, efficiency, and versatility in nanofiber production. The present novel invention is designed for easy scalability, simplified operation, and maintenance, making it accessible for widespread industrial applications. It also enables continuous, automated production, enhancing efficiency and consistency. Safety and reliability are prioritized with robust components and control mechanisms, while the system significantly increases nano fibre production rates compared to conventional methods. The present novel machine supports handling multiple polymer solutions for multifunctional fibres and allows fine control over fibre morphology, catering to specific application needs. The present novel invention is user-friendly, adaptable for both research and industrial-scale production. 
List of Components
101. Base table
102. Main pillars
103. Additional pillars
104. Housing for electrodes
105. Upper Conductive metal hollow pipe (electrodes)
106. Slit or counter bore casings
107. Moving carriage
108. Screw, servo motor, or belt mechanism
109. Guide roll
110. Top frame
111. Vertical Shaft
112. Lower Conductive metal hollow pipe (electrodes)
113. Winding and rewinding mechanism
114. Substrate roll

List of Drawings
Figure 1: Conductive metal hollow pipes
Figure 2: Assembly of electrospinning

Detailed Description of Drawing and Invention
The present novel invention is described herein with specific exemplary details to facilitate a comprehensive understanding of its functionality and application. However, it is important to note that the scope of the invention extends beyond these specific examples. A person skilled in the art will recognize that the principles and methods disclosed can be adapted, modified, or applied using alternative techniques, materials, or configurations. Thus, while the detailed description provides a clear example of how the invention can be implemented, it is intended to be illustrative rather than restrictive. The invention encompasses various modifications and adaptations that fall within the broader scope of the claims, reflecting the underlying principles and innovative concepts of the invention.
The following detailed description outlines the construction, components, and operation of the present novel slit base electrospinning machine designed for efficient and controlled nanofiber production. The present novel machine introduces unique features and improvements over traditional electrospinning technologies, offering enhanced performance and versatility.
The present invention provides an advanced electrospinning machine designed for efficient, uniform, and versatile production of nanofibers using a novel slit-based mechanism that introduces unique features and improvements over traditional electrospinning technologies, offering enhanced control over nanofiber morphology and expanding the range of applications for nanofibrous materials. Below is a comprehensive description of the components, assembly, and operation of the electrospinning machine.
1. Construction and Components
The present novel electrospinning machine, generally indicated by reference numeral 100, is constructed using a series of interconnected components designed to ensure precise nanofiber production:
1.1 Base Structure and Support
• Base Table (101): The foundation of the entire assembly is a robust base table (101) that provides stability and rigidity. It is constructed from durable, non-conductive materials capable of supporting the weight of the machine components and withstanding mechanical forces during operation. The base table serves as the primary support structure for the machine, ensuring that all parts remain securely anchored.
• Main Pillars (102): Four main pillars (102) extend vertically from the base table (101), providing a strong framework for the machine. These pillars (102) support other vertically aligned components.
• Additional Pillars (103): Four additional pillars (103) are strategically positioned parallel to the main pillars (102) to enhance the structural stability of the assembly. These pillars reinforce the arrangement of the Upper Conductive metal hollow pipe (electrodes) (105), Lower Conductive metal hollow pipe (electrodes) (112) and housing for electrodes (104) that help maintain precise alignment during the electrospinning process.
1.2 Electrode and Polymer Solution Delivery System
• Housing for Electrodes (104): A non-conductive housing (104) serves as a secure mounting structure for the electrode assembly. It is specifically designed to support both the Upper Conductive Metal Hollow Pipes (105) and the Lower Conductive Metal Hollow Pipes (112), ensuring correct alignment and electrical connectivity.
• Upper Conductive Metal Hollow Pipes (Electrodes) (105): Acting as the collection electrodes, the upper pipes serve as the negative electrodes in the system. Positioned above the lower electrodes (112), they are responsible for collecting the polymer droplets formed in the electric field. The dimensions of these pipes can either match those of the lower electrodes or vary depending on specific requirements. These negative electrodes play a crucial role in guiding and collecting the nanofibers, ensuring accurate fiber deposition across the intended area. The precise alignment of the upper electrodes with the active area optimizes the fiber morphology, contributing to high-quality nanofiber production.
• Slit or Counter Bore Casings (106): This feature is exclusively designed on the hexagonal surface of the Lower Conductive Metal Hollow Pipes (112). The slits (106) can range from 0.01mm to 10mm in width, while the counter bores have diameters ranging from 0.0001mm to 10mm. These casings ensure controlled and uniform distribution of the polymer solution, crucial for consistent nanofiber formation. They are designed with a hexagonal cross-section, varying in diameter from 4mm to 100mm, with lengths between 5mm and 500mm. These slit or counter bore (106) is done on one surface of the hexagonal casing and the distance between the bore varies from 1mm to 60mm. The counter bore is having an inner diameter range from 0.1 to 2mm and the upper opening diameter varies from 0.1 to 15mm. The tapper angle inside the bore varies from 5 degree to 75-degree angle.
• Lower Conductive Metal Hollow Pipes (Electrodes) (112): These conductive metal hollow pipes are integral to the electrospinning process, serving as both the reservoir for the polymer solution and the positive electrode. Positioned below the Upper Conductive Metal Hollow Pipes (Electrodes) (105), they generate the electric field necessary to initiate droplet formation. Each pipe features a hexagonal casing surface equipped with precisely engineered slits or counter bores (106), specifically designed for controlled polymer delivery as shown in figure 1. The outer diameter of the pipes ranges from 3mm to 30mm, with an inner diameter between 0.5mm and 29.5mm, allowing for accommodation of various polymer viscosities. The length of these pipes is adaptable to the working width of the substrate, from 50mm to 3000mm, ensuring flexibility for different production needs.
1.3 Motion Control and Precision Mechanisms
• Moving Carriage (107): The moving carriage (107) is a critical part of the machine, responsible for the precise positioning of the electrodes. It allows for controlled, reciprocating motion, moving the Upper Conductive Metal Hollow Pipes (Electrodes) (105) up and down relative to the substrate. The carriage is driven by a precise screw, servo motor, or belt mechanism (108), ensuring controlled and repeatable motion. This movement is essential for adjusting the electrode distance, which directly influences nanofiber morphology.
• Screw, Servo Motor, or Belt Mechanism (108): A precise driving mechanism (108) operates the moving carriage (107), facilitating its reciprocating motion. The system can be adjusted to control the speed (ranging from 0mm/sec to 500mm/sec) and distance of the movement, allowing for customized nanofiber production.
• Guide Roll (109): To maintain proper tension and alignment of the substrate, guide rolls (109) are strategically placed throughout the machine. These rolls guide the substrate material through the electrospinning zone, ensuring even distribution and consistent fiber deposition.
• Top Frame (110): The top frame (110) is constructed from non-conductive materials and is attached to the main pillars (102). It includes a vertical adjustment mechanism that enables precise control over the distance between the Upper Conductive Metal Hollow Pipes (105) and the Lower Conductive Metal Hollow Pipes (112), crucial for adjusting the electric field strength and fiber formation.
• Vertical Shaft (111): The vertical shaft (111) supports the Lower Conductive Metal Hollow Pipes (112) and ensures their precise positioning. This shaft (111) maintains the stability of the Lower Conductive Metal Hollow Pipes (112) during operation, contributing to consistent fiber quality.
1.4 Substrate Handling System
• Winding and Rewinding Mechanism (113): A sophisticated winding and rewinding mechanism (113) is integrated to handle the substrate. This system manages the speed and tension of the substrate roll (114), allowing for controlled movement through the electrospinning area. The mechanism includes a braking system to maintain consistent tension during nanofiber deposition.
• Substrate Roll (114): The substrate roll (114) is the collection medium for the generated nanofibers. It can be composed of a variety of materials, including textiles, papers, leathers, or conductive substrates, depending on the application. It is guided between the Upper Conductive Metal Hollow Pipes (Electrodes) (105) and lower Conductive Metal Hollow Pipes (Electrodes) (112) and attached to the winding and rewinding side of the mechanism (113). The width of the substrate roll can vary from 50mm to 3000mm, adaptable to different production needs.
2. Working Mechanism
The operation of the slit-based electrospinning machine involves several stages, from setup to nanofiber collection:
2.1 Setup and Initialization
• Electrode Connection: The Upper Conductive Metal Hollow Pipes (electrode) (105) are connected to a negative high-voltage power supply, while the Lower Conductive Metal Hollow Pipes (electrode) (112) are connected to a positive high-voltage power supply. The electric field created between these electrodes is the driving force behind the electrospinning process.
• Substrate Loading: A suitable substrate material is mounted on the winding and rewinding mechanism (113) and guided between the Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112). This setup ensures that the substrate is positioned to collect nanofibers as they are generated. The substrate is then securely attached to the rewinding side of the winding and rewinding mechanism (113).
• Electrode Distance Adjustment: The distance between the Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112) is adjusted according to the desired thickness and length of the nanofibers. This adjustment allows for precise control over the fiber morphology.
2.2 Polymer Solution Preparation and Delivery
• Polymer Solution Filling: The conductive metal hollow pipes (105) are filled with a polymer solution, prepared according to the desired nanofiber characteristics. A pumping system ensures continuous supply, maintaining consistent pressure and flow. The system accommodates a variety of polymers, including natural, synthetic, and bio-polymers, such as PVA, PTFE, TPU, PU, PA6, sodium alginate, and chitosan alone or in their combination.
• Moving Carriage Settings: The speed and distance of the moving carriage (107) are set according to the width of the substrate ranges from 0mm/sec to 500mm/sec. (114). This ensures complete and uniform coverage of the substrate during the electrospinning process.
• Polymer Dispersion: The polymer solution flows through the hollow pipes (105) and is dispensed via the slit or counter bore casings (106). These casings allow for a controlled, steady release, forming small droplets that are exposed to the electric field.
2.3 Nanofiber Production
• Electrospinning Activation: With the machine’s safety doors closed, the high-voltage power supplies are activated, creating a strong electric field between the electrodes.
• Electrospinning Process: The moving carriage (107) reciprocates up or down and the distance between the Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112) is to be fixed. Then the pump attached with the Lower Conductive metal hollow pipe (electrodes) (112). The polymer solution is then pumped into Lower Conductive metal hollow pipe (electrodes) (112) having slit or counter bore (106) on the hexagonal casing through high precision pump causing a small drop of polymer on the Upper Conductive metal hollow pipe (electrodes) (105) exposed to the electric field. As the positive and negative power supply is increased, the polymer solution is attracted upwards, forming a Taylor cone on the slit or counter bore casings (106). The positive and negative supply varies from 0KV to 250KV individually for generation of nanofibers.
• Nanofiber Deposition: The produced nano fibers are collected by the Winding and rewinding mechanism (113), which rolls the substrate onto the Substrate roll (114). This ensures continuous production and collection of nano fibers, making the process scalable and efficient for industrial applications.
3. Advanced Features and Customization
• Parameter Adjustments: The machine offers versatile control over various parameters, including electrode distance, winding and rewinding speed, carriage motion, polymer solution viscosity, and environmental conditions within the reaction chamber. This flexibility enables the production of nanofibers with specific characteristics tailored to diverse applications.
• Substrate Rewinding: As the nanofiber film is formed on the substrate (114), the winding and rewinding mechanism (113) controls the speed and tension of the substrate roll with braking and tension mechanism, ensuring a consistent and controlled collection of the nanofiber-coated substrate.
• Maintenance and Cleaning: The slit base design of the machine significantly reduces maintenance requirements compared to traditional needle-based systems or wire/rod base arrangement. However, periodic cleaning and inspection of the slit or counter bore casings (106) and the Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112) may be necessary to ensure optimal performance.
• Polymer Switching and Maintenance: The slit-based design facilitates easy switching between different polymers, allowing for multifunctional nanofiber production. Maintenance is simplified, as the slit design reduces the risk of clogging and requires minimal cleaning compared to traditional needle-based systems.
4. Advantages of the Invention
• Clogging Resistance: The slit or counter bore casings (106) are designed to prevent clogging, ensuring uninterrupted polymer flow and reducing maintenance efforts.
• Uniform Fiber Formation: The consistent release of polymer solution results in a uniform nanofiber layer, minimizing defects and ensuring high-quality end products.
• Customizable Morphology: Adjustable components allow for fine-tuning of nanofiber properties, including thickness, diameter, and orientation.
• Versatility: The ability to handle multiple polymer types simultaneously enhances the machine's application potential, making it suitable for diverse industries.
The electrospinning device features a versatile conductive metal hollow pipe (105) system that can be configured to either move or remain static during operation. When the conductive hollow pipe (105) extends across the full length of the base table (101), it functions in a static mode, ensuring stable nano fiber production along its entire length. The electrode pipe distance (105) can also be set, driven by the moving carriage (107), which is controlled by a screw, servo motor, or belt mechanism (108), to facilitate dynamic fiber formation across multiple sections. This dual functionality allows for enhanced control over the electrospinning process, enabling precise and customizable nano fiber production depending on the specific requirements of the application.

Dated this 07th January 2025 , Claims:Claims
I/We claim,
1. An Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication comprising:
A base structure, including:
A base table (101) configured to provide a stable foundation for the machine;
A plurality of main pillars (102) extending vertically from the base table to support additional components;
A set of additional pillars (103) parallel to the main pillars (102) to enhance structural stability;
An electrode and polymer solution delivery system, comprising:
A non-conductive housing for electrode (104) to ensure secure mounting;
An Upper Conductive metal hollow pipe (electrode) (105), serving as collection electrodes, is configured to collect nanofibers formed in an electric field;
A Lower Conductive metal hollow pipe (electrode) (112), serving as both the reservoir for a polymer solution and as positive electrodes to initiate droplet formation;
A plurality of slit or counter bore casings (106), positioned on the hexagonal surface of the Lower Conductive metal hollow pipe (electrode) (112), to ensure controlled and uniform polymer solution distribution;
A motion control and precision mechanism, comprising:
A moving carriage (107) supporting the Upper Conductive metal hollow pipe (electrode) (105), capable of reciprocating motion to adjust electrode distance relative to a substrate;
A driving mechanism, selected from a group consisting of screw, servo motor, or belt mechanism (108), for precise control over the motion of the moving carriage (107);
A guide roll (109) to maintain tension and alignment of the substrate during fiber deposition;
A top frame (110) with a vertical adjustment mechanism to regulate the spacing between the Upper Conductive metal hollow pipe (electrode) (105) and the Lower Conductive metal hollow pipe (electrode) (106);
A substrate handling system, comprising:
A winding and rewinding mechanism (113) to control the movement and tension of a substrate roll (114), the substrate being guided between the Upper Conductive metal hollow pipe (electrode) (105) and the Lower Conductive metal hollow pipe (electrode) (106) for nanofiber collection;
Wherein the machine operates as follows:
The Upper Conductive metal hollow pipe (electrode) (105) is connected to a negative high-voltage power supply, while the Lower Conductive metal hollow pipe (electrode) (106) is connected to a positive high-voltage power supply, generating an electric field;
A polymer solution is filled into the Lower Conductive metal hollow pipe (electrode) (106) and delivered through the slit or counter bore casings (106) to form polymer droplets;
The polymer droplets are exposed to the electric field generated between the Upper Conductive metal hollow pipe (electrode) (105) and the Lower Conductive metal hollow pipe (electrode) (106), causing the formation of nanofibers that are collected on the substrate roll (114);
The moving carriage (107) adjusts the Upper Conductive metal hollow pipe (electrode) (105) and the Lower Conductive metal hollow pipe (electrode) (106) distance to control the morphology of the nanofibers, while the winding and rewinding mechanism (113) ensures consistent substrate movement for continuous nanofiber production.
2. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the Upper Conductive metal hollow pipe (electrodes) (105) features dual functionality to move or remain static during operation, with an outer diameter ranging from 3 mm to 30 mm, an inner diameter ranging from 0.5 mm to 29.5 mm, and a length ranging from 50 mm to 3000 mm, based on the width of the working substrate.
3. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the slit or counter bore casings (106) feature slits with widths ranging from 0.01 mm to 10 mm, or counter bores with diameters ranging from 0.0001 mm to 10 mm.
4. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the slit or counter bore casings (106) include slits with widths ranging from 0.01 mm to 10 mm or counter bores with diameters ranging from 0.0001 mm to 10 mm, and hexagonal casings with diameters ranging from 4 mm to 100 mm and lengths ranging from 5 mm to 500 mm.
5. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the counter bores (106) on the hexagonal casings feature inner diameters ranging from 0.1 mm to 2 mm, upper opening diameters ranging from 0.1 mm to 15 mm, and taper angles varying from 5 degrees to 75 degrees, with distances between adjacent counter bores ranging from 1 mm to 60 mm.
6. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the width of the substrate roll (114) ranges from 50 mm to 3000 mm, and the speed of the moving carriage (107) varies from 0 mm/sec to 500 mm/sec, based on the width of the substrate.
7. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the positive and negative power supply for the electrospinning process varies individually from 0 KV to 250 KV for the generation of nanofibers.
8. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the distance between the Upper Conductive metal hollow pipe (electrodes) (105) and Lower Conductive metal hollow pipe (electrodes) (112) is adjustable.
9. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein control operational parameters including the electrode distance, polymer flow rate, moving carriage speed, and environmental conditions have customizable properties.
10. The Advanced Electrospinning Apparatus and Method Utilizing Slit Mechanism for Precision Nanofiber Fabrication as claimed in claim 1, wherein the system accommodates variety of polymers including but not limited to natural, synthetic, and bio-polymers, such as PVA, PTFE, TPU, PU, PA6, sodium alginate, and chitosan alone or in their combination.

Documents

Application Documents

# Name Date
1 202521001606-MSME CERTIFICATE [07-01-2025(online)].pdf 2025-01-07
2 202521001606-FORM28 [07-01-2025(online)].pdf 2025-01-07
3 202521001606-FORM-9 [07-01-2025(online)].pdf 2025-01-07
4 202521001606-FORM-5 [07-01-2025(online)].pdf 2025-01-07
5 202521001606-FORM-26 [07-01-2025(online)].pdf 2025-01-07
6 202521001606-FORM FOR SMALL ENTITY(FORM-28) [07-01-2025(online)].pdf 2025-01-07
7 202521001606-FORM FOR SMALL ENTITY [07-01-2025(online)].pdf 2025-01-07
8 202521001606-FORM 18A [07-01-2025(online)].pdf 2025-01-07
9 202521001606-FORM 1 [07-01-2025(online)].pdf 2025-01-07
10 202521001606-FIGURE OF ABSTRACT [07-01-2025(online)].pdf 2025-01-07
11 202521001606-EVIDENCE FOR REGISTRATION UNDER SSI(FORM-28) [07-01-2025(online)].pdf 2025-01-07
12 202521001606-EVIDENCE FOR REGISTRATION UNDER SSI [07-01-2025(online)].pdf 2025-01-07
13 202521001606-DRAWINGS [07-01-2025(online)].pdf 2025-01-07
14 202521001606-COMPLETE SPECIFICATION [07-01-2025(online)].pdf 2025-01-07
15 Abstract.jpg 2025-01-29