公开(公告)号：US11752651B2

公开(公告)日：2023-09-12

申请号：US16711539

申请日：2019-12-12

Applicant: The Gillette Company LLC ,  Massachusetts Institute of Technology

Inventor： Neville Sonnenberg ,  Abhinav Rao ,  Anastasios John Hart ,  Paul Kitchen

IPC: B26B21/58 ,  B26B21/40 ,  B29C35/08 ,  B29C39/00 ,  B29C39/02 ,  C08L1/02 ,  C08L63/00 ,  C08J5/04 ,  B29C43/02 ,  B29C33/00 ,  B29C37/00 ,  B29C33/56 ,  B29K1/00 ,  B29K105/00

CPC classification number: B26B21/58 ,  B26B21/4068 ,  B29C33/005 ,  B29C33/56 ,  B29C35/0805 ,  B29C37/0067 ,  B29C39/006 ,  B29C39/026 ,  B29C43/021 ,  B29C43/027 ,  C08J5/045 ,  C08L1/02 ,  C08L63/00 ,  B29C2035/0827 ,  B29C2037/92 ,  B29C2043/029 ,  B29K2001/00 ,  B29K2105/0061

Abstract: A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.

公开(公告)号：US11884004B2

公开(公告)日：2024-01-30

申请号：US17278779

申请日：2019-11-12

Applicant: Massachusetts Institute of Technology

Inventor： Abhinav Rao ,  Anastasios John Hart

IPC: B29C64/135 ,  B29C64/268 ,  B29C64/40 ,  B29C71/00 ,  B33Y10/00 ,  B33Y40/20 ,  B29K105/00 ,  B29K105/24

CPC classification number: B29C64/135 ,  B29C64/268 ,  B29C64/40 ,  B29C71/0009 ,  B33Y10/00 ,  B33Y40/20 ,  B29K2105/0002 ,  B29K2105/243

Abstract: Systems and methods for making it easier to remove support structures printed in conjunction with printing an object using stereolithographic additive manufacturing are disclosed. In some exemplary embodiments, one or more interfaces between the printed object and the support structures are modulated to allow for easy separation between them, in some instances even when the object and support structures are made from the same material. Various modulation techniques are disclosed, including adjusting an intensity of exposure to light at interfaces between the object and support structures, and using two materials where one material cures at two wavelength ranges and the other material only cures at one of the two wavelength ranges. Other systems and methods that allow for easy separation of part and support structure are also described.

公开(公告)号：US11642806B2

公开(公告)日：2023-05-09

申请号：US16711524

申请日：2019-12-12

Applicant: The Gillette Company LLC ,  Massachusetts Institute of Technology

Inventor： Neville Sonnenberg ,  Abhinav Rao ,  Anastasios John Hart ,  Paul Kitchen

IPC: B26B21/58 ,  B26B21/40 ,  B29C35/08 ,  B29C39/00 ,  B29C39/02 ,  C08L1/02 ,  C08L63/00 ,  C08J5/04 ,  B29C43/02 ,  B29C33/00 ,  B29C37/00 ,  B29C33/56 ,  B29K1/00 ,  B29K105/00

CPC classification number: B26B21/58 ,  B26B21/4068 ,  B29C33/005 ,  B29C33/56 ,  B29C35/0805 ,  B29C37/0067 ,  B29C39/006 ,  B29C39/026 ,  B29C43/021 ,  B29C43/027 ,  C08J5/045 ,  C08L1/02 ,  C08L63/00 ,  B29C2035/0827 ,  B29C2037/92 ,  B29C2043/029 ,  B29K2001/00 ,  B29K2105/0061

Abstract: A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.