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Method and system for improving heat resistance of 3D printed objects

A 3D printer and object technology, applied in the field of additive manufacturing, can solve the problems of non-crystallization and low softening temperature of PLA parts

Active Publication Date: 2021-02-05
JF POLYMERS (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limited heat resistance of 3D printed objects may prevent their use in applications requiring good heat resistance or thermal stability
However, due to the rapid cooling during the 3D printing process (i.e. not enough time for PLA to crystallize), PLA parts made by 3D printing are still substantially amorphous
Therefore, the softening temperature of 3D printed parts made of PLA is still quite low after post-processing steps, such as less than or about 60°C, which limits the use of many thermoplastic polymers like PLA as 3D printing materials.

Method used

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  • Method and system for improving heat resistance of 3D printed objects
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Embodiment Construction

[0021] This description and drawings, which illustrate exemplary embodiments, should not be taken as limiting. Various mechanical, compositional, structural, chemical, electrical, and operational changes may be made without departing from the scope of the description and claims (including equivalents). In some instances, well-known structures and techniques have not been shown or described in detail so as not to obscure the disclosure. Like reference numbers in two or more figures indicate the same or similar elements. Furthermore, elements and related features disclosed in detail with reference to one embodiment may, in practice, be included in other embodiments where they are not specifically shown or described. For example, if an element is described in detail with reference to one embodiment but not described with reference to a second embodiment, the element can still be considered to be included in the second embodiment.

[0022] For the purposes of this specification ...

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Abstract

Disclosed herein are methods and systems for making an object using additive manufacturing, including processing the object to improve its heat resistance, such as processing the object to allow the material of the object to crystalize in a reversible gelation medium. The reversible gelation medium may serve as a temporary mold for the object to reduce, minimize, or eliminate deformation of the object during processing. Such processing of the object may increase the softening temperature of the material of the object, and thus may improve the heat resistance of the object comparing to that of the object prior to processing.

Description

technical field [0001] The present invention relates generally to additive manufacturing, and more particularly to methods and systems for handling objects formed using additive manufacturing processes. Background technique [0002] Additive manufacturing is any of a variety of manufacturing techniques for constructing objects in an additive manner, usually layer by layer. Additive manufacturing is often referred to by the public as "3D printing". One type of additive manufacturing technology is based on extrusion deposition, such as fused deposition modeling (FDM) or fused filament fabrication (FFF). Over the past few years, FDM or FFF has become a common technique for prototyping, prototyping, and production applications. [0003] FDM or FFF generally involves feeding a thermoplastic polymer in continuous filament form to a heated extrusion nozzle. The thermoplastic polymer in the extrusion nozzle can be heated to a temperature above its glass transition temperature, at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C71/00B29C71/02C08G63/08B33Y80/00
CPCB29C71/0063B29C71/02B29C2071/022B33Y10/00B33Y80/00B29C64/118C08G63/08
Inventor 罗小帆赵俊恒
Owner JF POLYMERS (SUZHOU) CO LTD