公开(公告)号：US11766314B2

公开(公告)日：2023-09-26

申请号：US18107742

申请日：2023-02-09

Applicant: ALIGN TECHNOLOGY, INC.

Inventor： Chunhua Li ,  Yan Chen ,  Heinz Pudleiner ,  Klaus Meyer ,  Joerg Nickel ,  Craig Pehlert

IPC: A61C7/08 ,  B32B27/28 ,  B32B7/022 ,  B32B25/08 ,  B32B25/20 ,  B32B27/08 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B27/40 ,  B29C51/14 ,  B32B25/14 ,  A61C13/00 ,  A61F5/56 ,  A61C19/06 ,  A61C7/00 ,  A63B71/08 ,  B29K67/00 ,  B29K75/00 ,  B29L31/00

CPC classification number: A61C7/08 ,  B29C51/14 ,  B32B7/022 ,  B32B25/08 ,  B32B25/20 ,  B32B27/08 ,  B32B27/281 ,  B32B27/285 ,  B32B27/286 ,  B32B27/308 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B27/365 ,  B32B27/40 ,  A61C7/00 ,  A61C13/00 ,  A61C19/06 ,  A61F5/56 ,  A63B71/085 ,  B29K2067/00 ,  B29K2075/00 ,  B29K2995/007 ,  B29K2995/0026 ,  B29K2995/0077 ,  B29K2995/0082 ,  B29L2031/753 ,  B32B25/14 ,  B32B27/283 ,  B32B27/30 ,  B32B27/302 ,  B32B2250/03 ,  B32B2250/24 ,  B32B2250/40 ,  B32B2274/00 ,  B32B2307/40 ,  B32B2307/412 ,  B32B2307/50 ,  B32B2307/51 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2307/546 ,  B32B2319/00 ,  B32B2323/00 ,  B32B2323/04 ,  B32B2323/10 ,  B32B2323/16 ,  B32B2333/04 ,  B32B2367/00 ,  B32B2371/00 ,  B32B2375/00 ,  B32B2377/00 ,  B32B2383/00 ,  B32B2535/00 ,  B32B2555/00 ,  Y10T428/31551 ,  Y10T428/31565 ,  Y10T428/31786

Abstract: A multilayer sheet comprising first and second layers is provided. The first layer consists of a co-polyester. The second layer consists of a thermoplastic polyurethane elastomer having an elongation at break of greater than 200%, a hardness of 60A to 85D, an ultimate tensile strength of greater than about 5000 psi, and a light transmission between 400 nm and 800 nm of greater than about 75%. A mold is provided and the multilayer sheet is thermoformed over the mold to form a plurality of tooth-receiving cavities configured to receive and reposition a patient's teeth from a first arrangement toward a second arrangement. Excess material is trimmed from the thermoformed multilayer sheet to form a multilayer dental aligner.

公开(公告)号：US11154384B2

公开(公告)日：2021-10-26

申请号：US17214487

申请日：2021-03-26

Applicant: ALIGN TECHNOLOGY, INC.

Inventor： Chunhua Li ,  Yan Chen ,  Heinz Pudleiner ,  Klaus Meyer ,  Joerg Nickel ,  Craig Pehlert

IPC: A61C7/08 ,  B32B27/28 ,  B32B25/08 ,  B32B27/08 ,  B32B27/40 ,  B32B7/02 ,  B29C51/14 ,  B29K67/00 ,  B29K75/00 ,  B32B25/20 ,  B32B27/30 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B29L31/00 ,  B32B25/14 ,  A61C13/00 ,  A61F5/56 ,  A61C19/06 ,  A61C7/00 ,  A63B71/08

Abstract: A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.