Polymeric cutting edge structures and method of manufacturing polymeric cutting edge structures

Patent metadata

Field	Value
Publication number	US-10562200-B2
Application number	US-201615195137-A
Country	US
Kind code	B2
Filing date	Jun 28, 2016
Priority date	Jun 28, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

A functional polymeric cutting edge structure and methods for the manufacturing of cutting edge structures comprised of polymeric materials are provided. The cutting edge structures may be produced on a substrate having a blade body or blade support type. The polymeric material is produced by curing a precursor material by electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to cure the precursor material. A razor blade for use in a razor cartridge or a blade box may be formed using the present invention.

First claim

What is claimed is:

1. A method for manufacturing at least one cutting edge structure comprising the steps of:
providing a computer model of a cutting edge structure;
providing a liquid precursor material disposed within a container;
immersing at least one substrate into said liquid precursor material;
curing portions of said liquid precursor material in a focal point of an electromagnetic radiation while said at least one substrate is disposed in said precursor material;
wherein a wavelength of said radiation is about double a wavelength required to cure said liquid precursor material;
moving the focal point of said radiation within said precursor material to form at least one cutting edge structure on said substrate based on said model; and
removing said substrate with said at least one cutting edge structure from said liquid precursor material in said container, wherein said at least one cutting edge structure is a razor blade or a portion of a blade box.

2. The method of claim 1 , wherein the substrate comprises a blade body or blade support for said at least one cutting edge structure.

3. The method of claim 1 , wherein an extended cutting edge is formed of closely spaced cutting edge elements.

4. The method of claim 1 , wherein said moving the focal point step further includes movement of a lens in any direction, or movement of the container in any direction, or any combination thereof.

5. The method of claim 1 , wherein said at least one cutting edge structure is comprised of a plurality of voxels.

6. The method of claim 1 , wherein said precursor material is comprised of a monomer material, an oligomer material, or any combination thereof.

7. The method of claim 1 , wherein said at least one cutting edge structure comprises a gothic arch, a roman arch, or one or more undercuts.

8. The method of claim 1 , wherein a tip radius of said at least one cutting edge structure is less than 1 micrometer.

9. The method of claim 1 , wherein said precursor material is comprised of an acrylic based material.

10. The method of claim 1 , wherein at least one of said precursor material or said cured polymeric material is transparent to electro-magnetic radiation at a wavelength in the range of 250 to 1500 nanometers.

11. The method of claim 1 , wherein the removing step further comprises physical or chemical removal of the substrate from said cured polymeric material cutting edge structure.

12. The method of claim 1 , wherein a photo-initiator of about 1 to about 3% by weight of composition is added to the second precursor material prior to the curing step.

13. The method of claim 1 wherein said step of curing comprises cross-linking or polymerization.

14. The method of claim 1 , further comprising the step of assembling said razor blade or said blade box into a razor cartridge housing or frame.

Assignees

• Gillette Co
• Gillette Co Llc

Inventors

• Gester Matthias
• Kiyan Roman
• Hinze Ulf
• El-Tamer Ayman
• Simms Graham John

Classifications

• B29C64/40

  Structures for supporting 3D objects during manufacture and intended to be sacrificed after completion thereof · CPC title

• B26B21/60 Primary

  by the coating material · CPC title

• B26B21/4068

  Mounting devices; Manufacture of razors or cartridges (B26B21/528 takes precedence) · CPC title

• B29K2105/0058

  Liquid or visquous · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title