07-02-2019 дата публикации
Номер: US20190037969A1
Принадлежит:
Voxel8, Inc.
The present invention generally relates to methods of printing articles using three-dimensional printing and other printing techniques, and to articles formed from such techniques, including the printing of articles of footwear containing particles. Certain embodiments are generally directed to composites comprising particles (e.g., reinforcing particles), for example, rubber particles. The particles may be used, for example, to increase slip or abrasion resistance. The composites may also contain polyurethanes or other compounds, e.g., to facilitate fabrication, e.g., using three-dimensional printing and other printing techniques. Other embodiments are directed to methods of making or using such articles. For example, in some embodiments, a composite may be prepared by mixing particles (e.g., reinforcing particles) with at least a first fluid and a second fluid within a nozzle, such as a microfluidic printing nozzle, which may be used to direct the resulting product onto a substrate. 1. A 3D-printed article for use in footwear , comprising:a 3D-printed article having a gradient in a property between a first portion and a second portion, wherein the 3D-printed article is a single integrated material, and wherein the property is selected from the group consisting of average largest dimension of particles, weight percent of particles, volume percent of particles, compression strength, slip resistance, abrasion resistance, density, stiffness, heat deflection temperature, pore concentration, pore size, and coefficient of thermal expansion.2. The article of claim 1 , wherein the article is adhered to a textile.3. The article of claim 1 , wherein the article comprises a polymer.4. The article of claim 1 , wherein the article is a component of a shoe upper.5. The article of claim 1 , comprising a deposited material comprising reactive functional groups.6. The article of claim 1 , further comprising a first article to which the deposited material is adjacent and adhered to ...
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