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1. WO2020141440 - MULTI-LAYERED DENTAL APPLIANCE

Publication Number WO/2020/141440
Publication Date 09.07.2020
International Application No. PCT/IB2019/061444
International Filing Date 30.12.2019
IPC
B32B 27/36 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
36comprising polyesters
B32B 27/40 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
40comprising polyurethanes
B32B 27/32 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
32comprising polyolefins
B32B 27/08 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
06as the main or only constituent of a layer next to another layer of a specific substance
08of synthetic resin of a different kind
A61C 7/08 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
08Mouthpiece-type retainers
CPC
A61C 7/08
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
7Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
08Mouthpiece-type retainers ; or positioners, e.g. for both the lower and upper arch
B32B 1/02
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
1Layered products having a general shape other than plane
02Receptacles ; , i.e. rigid containers; , e.g. tanks
B32B 2250/05
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
055 or more layers
B32B 2250/24
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
24All layers being polymeric
B32B 2250/244
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
24All layers being polymeric
244All polymers belonging to those covered by group B32B27/36
B32B 2250/42
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
2250Layers arrangement
42Alternating layers, e.g. ABAB(C), AABBAABB(C)
Applicants
  • 3M INNOVATIVE PROPERTIES COMPANY [US]/[US]
Inventors
  • LIU, Richard Yufeng
  • SKAMSER, Daniel J.
  • VELAMAKANNI, Bhaskar V.
  • LEHN, Nathaniel I.
  • HIRSCH, Mitchell A.
  • PEKUROVSKY, Lyudmila A.
Agents
  • WEBER, Kevin W.
  • FLORCZAK, Yen Tong,
  • BLANK, Colene H.,
  • HARTS, Dean M. ,
  • LEVINSON, Eric D.,
  • MAKI, Eloise J.,
  • NOWAK, Sandra K.,
  • RINGSRED, Ted K.,
Priority Data
62/787,00931.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MULTI-LAYERED DENTAL APPLIANCE
(FR) APPAREIL DENTAIRE MULTICOUCHE
Abstract
(EN)
A dental appliance for positioning a patient's teeth includes a polymeric shell with a plurality of cavities for receiving one or more teeth. The polymeric shell includes at least 3 alternating polymeric layers AB, wherein layer A includes a thermoplastic polymer A, layer B includes a thermoplastic polymer B, and the thermoplastic polymer B is different from the thermoplastic polymer A. Each of the thermoplastic polymers A and B have a flexural modulus of about 1.0 GPa to about 4.0 GPa; and each of the thermoplastic polymers A and B have a glass transition temperature (Tg) greater than about 40 °C.
(FR)
Appareil dentaire destiné à positionner les dents d'un patient, comprenant une coque polymère comportant une pluralité de cavités conçues pour recevoir une ou plusieurs dents. La coque polymère comprend au moins trois couches polymères alternées AB, la couche A comprenant un polymère thermoplastique A, la couche B comprenant un polymère thermoplastique B, et le polymère thermoplastique B étant différent du polymère thermoplastique A. Chacun des polymères thermoplastiques A et B présente un module d'élasticité en flexion d'environ 1,0 GPa à environ 4,0 GPa; et chacun des polymères thermoplastiques A et B présente une température de transition vitreuse (Tg) supérieure à environ 40 °C.
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