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

Patent metadata

Field	Value
Publication number	US-12350852-B2
Application number	US-202016737300-A
Country	US
Kind code	B2
Filing date	Jan 8, 2020
Priority date	Jun 28, 2016
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

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 cutting edge structure comprised of a polymeric material, said polymeric material produced on a substrate disposed in a liquid precursor material for said polymeric material, portions of said liquid precursor material cured in a focal point of electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to cure said liquid precursor material, wherein said cutting edge structure comprises a plurality of cutting edge elements extending linearly to form an extended cutting edge, and wherein a tip radius of said at least one cutting edge structure is less than 1 micrometer.

2. A cutting edge structure of claim 1 , whereby the substrate comprises a blade body or blade support.

3. The cutting edge structure of claim 2 , wherein said precursor material is comprised of a monomer material, an oligomer material, or any combination thereof.

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

5. The cutting edge structure of claim 1 , wherein a tip radius of said at least one cutting edge structure is 250 nm.

6. The cutting edge structure 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.

7. The cutting edge structure of claim 1 , wherein said precursor material is cured by cross-linking or polymerization.

8. The cutting edge structure of claim 1 is a razor blade.

9. A blade box comprising:
at least one cutting edge structure;
at least one non-cutting edge structure coupled to said at least one cutting edge structure, both said cutting and non-cutting edge structures comprised of polymeric material, said polymeric material produced on a substrate disposed in a liquid precursor material for said polymeric material, portions of said liquid precursor material cured in a focal point of electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to cure said liquid precursor material, wherein said cutting edge structure comprises a plurality of cutting edge elements extending linearly to form an extended cutting edge, and wherein a tip radius of said at least one cutting edge structure is less than 1 micrometer.

10. The blade box of claim 9 , wherein said precursor material is comprised of an acrylic based material.

11. The blade box of claim 9 , wherein said electromagnetic radiation cures said precursor material in a plurality of voxels by moving a focal point in any direction.

12. A cutting edge structure comprised of a polymeric material, said polymeric material produced on a substrate disposed in a liquid precursor material for said polymeric material, portions of said liquid precursor material cured in a focal point of electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to cure said liquid precursor material, wherein said cutting edge structure comprises a plurality of cutting edge elements extending linearly to form an extended cutting edge, wherein said precursor material is comprised of a monomer material, an oligomer material, or any combination thereof, and wherein a tip radius of said at least one cutting edge structure is less than 1 micrometer.

13. A blade box comprising:
at least one cutting edge structure;
at least one non-cutting edge structure coupled to said at least one cutting edge structure, both said cutting and non-cutting edge structures comprised of polymeric material, said polymeric material produced on a substrate disposed in a liquid precursor material for said polymeric material, portions of said liquid precursor material cured in a focal point of electromagnetic radiation wherein a wavelength of said radiation is about double a wavelength required to cure said liquid precursor material, wherein said precursor material is comprised of an acrylic based material, wherein said cutting edge structure comprises a plurality of cutting edge elements extending linearly to form an extended cutting edge and wherein a tip radius of said at least one cutting edge structure is less than 1 micrometer.

Assignees

• Gillette Co Llc

Inventors

• Gester Matthias
• Kiyan Roman
• Hinze Ulf
• Kurselis Kestutis
• Simms Graham John

Classifications

• B29L2031/286

  Cutlery · CPC title

• B29K2105/0058

  Liquid or visquous · CPC title

• B26B21/4068

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

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title