Devices and methods for the production of microfibers and nanofibers in a controlled environment

• US 9,827,728 B2
• Filed: 08/06/2013
• Issued: 11/28/2017
• Est. Priority Date: 08/06/2012
• Status: Active Grant

• Current Assignee: Clarcor, Inc. (Parker-Hannifin Corporation)
• Original Assignee: Clarcor, Inc. (Parker-Hannifin Corporation)
• Inventors: Kay, Stephen, Ner, Yogesh, Castellano, Lenard
• Primary Examiner(s): Sultana, Nahida
• Application Number:
  US13/960,383
• Publication Number:
  US 20140159262A1
• Time in Patent Office: 1,575 Days
• Field of Search: 264 8, 26421112, 425 8, 425 722, 425464, 425382 R, 4253822, 4253823
• CPC Class Codes: B29C 48/04 Particle-shaped making granules B29B9/00
• CPC Class Codes: B29C 48/05 Filamentary, e.g. strands
• CPC Class Codes: B29C 48/301 having reciprocating, oscillating or rotating parts
• CPC Class Codes: B29C 48/345 Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
• CPC Class Codes: B29D 99/0078 Producing filamentary materials
• CPC Class Codes: C03B 37/04 by using centrifugal force , e.g. spinning through radial orifices; Construction of the spinner cups therefor bonder application C03C25/00
• CPC Class Codes: C03B 37/045 Construction of the spinner cups
• CPC Class Codes: D01D 5/18 by means of rotating spinnerets

Abstract

Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers. The methods discussed herein employ centrifugal forces to transform material into fibers. Apparatuses that may be used to create fibers are also described. To improve the formation of fibers, various devices and systems for controlling the micro-environment around the fiber producing device are described.

Claims

1. A device for use in a microfiber and/or nanofiber producing system, the device comprising:

a body;

an internal cavity disposed in the body;

one or more openings that allow material to be passed from the internal cavity to the exterior of the body;

a coupling member, wherein the fiber producing device is couplable to a driver through the coupling member; and

a draft member being a fan blade coupled to the body, wherein rotation of the fan blade creates a gas flow axially or radially away from the coupling member of the fiber producing device,

wherein the body is configured to receive a material to be produced into a fiber, and

wherein, during use, rotation of the body causes material in the internal cavity to be passed through one or more openings to produce microfibers and/or nanofibers, and wherein the gas flow produced by the draft member conveys at least some of the produced microfibers and/or nanofibers away from the body during use.

2. The device of claim 1, wherein the draft member comprises:

an interior cavity,

a first end coupled to the body; and

an opening positioned at a second end of the draft member, opposite to the first end,

wherein material in the body passes into the internal cavity through the first end and through one or more of the openings to produce the microfibers and/or nanofibers.

3. The device of claim 1, wherein at least a portion of the draft member is angled with respect to a plane perpendicular to the axis of rotation, the angle being such that the gas flow moves axially or radially away from the coupling member due to rotation of the draft member.

4. The device of claim 1, wherein the body comprises a ring-shaped substrate defining the internal cavity, and wherein the draft member couples the ring shaped substrate to the coupling member.

5. The device of claim 4, wherein the ring-shaped substrate comprises a circular channel coupled to the internal cavity, wherein during use, the material is introduced into the circular channel and conveyed through the circular channel into the internal cavity.

6. The device of claim 1, wherein the body comprises a ring-shaped substrate defining the internal cavity, and wherein the draft member extends away from the ring shaped substrate, and wherein the openings are formed at an end of the draft member.

7. The device of claim 6, wherein the ring-shaped substrate comprises a circular channel coupled to the internal cavity, wherein during use, the material is introduced into the circular channel and conveyed through the circular channel into the internal cavity.

8. The device of claim 6, wherein the draft member comprises one or more raised members that are aligned with the axis rotation, and wherein, during rotation of the fiber producing device, the raised members create a gas flow in a direction both perpendicular to the axis of rotation and parallel to the axis of rotation.

9. The device of claim 1, wherein the body comprises a ring-shaped substrate defining the internal cavity and one or more coupling rods coupling the ring-shaped substrate to the coupling member, and wherein the draft member extends away from the ring shaped substrate, and wherein the openings are formed at an end of the draft member.

10. The device of claim 1, wherein the plurality of openings are in a pattern, and wherein the pattern of openings are positioned such that entwining of the produced microfibers and/or nanofibers is inhibited.

13. The device of claim 1, wherein the rotation of the fan blade creates at least an axial gas flow.

14. The device of claim 1, wherein the fan blade is coupled to the body such that the fan blade rotates with the body.

11. A system for producing microfibers and/or nanofibers comprising:

a fiber producing device comprising;

a body;

an internal cavity disposed in the body;

one or more openings that allow material to be passed from the internal cavity to the exterior of the body;

a coupling member, wherein the fiber producing device is couplable to a driver through the coupling member; and

a draft member being a fan blade coupled to the body, wherein rotation of the fan blade creates a gas flow axially or radially away from the coupling member of the fiber producing device,

wherein the body is configured to receive a material to be produced into a fiber,

a driver capable of rotating the body, wherein the body is couplable to the driver through the coupling member;

wherein, during use, rotation of the body causes material in the body to be passed through one or more openings to produce microfibers and/or nanofibers.

15. The device of claim 11, wherein the fan blade is coupled to the body such that the fan blade rotates with the body.

12. A device for use in a microfiber and/or nanofiber producing system, the device comprising:

a body;

an internal cavity disposed in the body;

one or more openings that allow material to be passed from the internal cavity to the exterior of the body;

a coupling member, wherein the fiber producing device is couplable to a driver through the coupling member; and

a means for producing a gas flow coupled to the body, wherein rotation of the means for producing a gas flow creates a gas flow axially or radially away from the coupling member of the fiber producing device;

wherein the body is configured to receive a material to be produced into a fiber, and wherein, during use, rotation of the body causes material in the internal cavity to be passed through one or more openings to produce microfibers and/or nanofibers, and wherein the gas flow produced by the draft member conveys at least some of the produced microfibers and/or nanofibers away from the body during use.

16. The device of claim 12, wherein the means for producing a gas flow is coupled to the body such that the means for producing a gas flow rotates with the body.

17. The device of claim 12, wherein the means for producing the gas flow axially or radially away from the coupling member is a draft member.