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Granular body for hot-melt three-dimensional printer, method for producing shaped article, and filament body

A technology of a three-dimensional printer and a manufacturing method, which is applied in the direction of manufacturing tools, additive manufacturing, coating devices, etc., can solve the problems of biting filaments, and the filaments cannot be supplied to the front end of the nozzle.

Pending Publication Date: 2022-05-06
KYORAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the manufacturing method of this method, the method of directly conveying the filament to the front end of the nozzle is generally adopted by gear engagement, etc., but when the filament is made of a thermoplastic elastomer with high flexibility, the gear will bite the filament. shape, resulting in the situation that the filament cannot be supplied to the tip of the nozzle

Method used

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  • Granular body for hot-melt three-dimensional printer, method for producing shaped article, and filament body
  • Granular body for hot-melt three-dimensional printer, method for producing shaped article, and filament body
  • Granular body for hot-melt three-dimensional printer, method for producing shaped article, and filament body

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no. 2 Embodiment approach

[0102] use Figure 10 The filament 11 according to the second embodiment of the present invention will be described. This embodiment is similar to the first embodiment, and the main difference lies in the structure of the continuous fiber bundle 12 . This difference will be described below.

[0103] In the present embodiment, the continuous fiber bundle 12 contains continuous resin fibers 12a2 in addition to the continuous reinforcing fibers 12a1 as the continuous fibers 12a. The continuous resin fibers 12a2 are made of resin melted during molding. When the continuous fiber bundle 12 contains the continuous resin fibers 12a2, the molten resin obtained by melting the continuous resin fibers 12a2 during molding connects the continuous reinforcing fibers 12a1 to improve the strength of the molded object 17.

[0104] Examples of the resin constituting the continuous resin fibers 12a2 include polyolefins such as polyethylene and polypropylene, aliphatic polyamides such as nylon ...

Embodiment 1

[0145] At the exit of an extruder extruding a shape memory polymer (manufactured by SMP Technologies Co., Ltd., model: MM5520), carbon fibers (density 1.79 g / cm2) as continuous reinforcing fibers were coated with a shape memory polymer. 3 , tensile strength 4.12GPa, tensile modulus 235GPa) around the continuous fiber bundle 12 to form a coating layer 13 to form a diameter of 1.75mm filament 11. The ratio of the continuous fiber bundle 12 in the filament 11 was set to 9.5% by mass.

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Abstract

Provided is a granular body for a hot-melt three-dimensional printer, said granular body being capable of producing a soft shaped object with high accuracy. The present invention provides a granular body for a hot melt three-dimensional printer, the granular body comprising a thermoplastic elastomer having a loss tangent (tan [delta]) of 0.40 or more at least one point at a measurement temperature of 120-270 DEG C and a loss elastic modulus (G ") of 11000 Pa or less when measured using a rotary rheometer under the conditions of a parallel plate 20 mm [phi], a measurement gap 1.3 mm, and a frequency 0.1 Hz.

Description

technical field [0001] The invention relates to a granular body for a hot-melt three-dimensional printer, a method for manufacturing a molded body, and a filament. Background technique [0002] (1st point of view) [0003] Patent Document 1 discloses a method of forming a molded object, which is to supply a filament as a molding material to an extrusion head, and then melt the filament with a liquefaction machine mounted on the extrusion head to melt the molten The filaments are extruded on the base after passing through the nozzle. [0004] In the manufacturing method of this method, the method of directly conveying the filament to the front end of the nozzle is generally adopted by gear engagement, etc., but when the filament is made of a thermoplastic elastomer with high flexibility, the gear will bite the filament. shape, resulting in a situation where the filament cannot be supplied to the tip of the nozzle. [0005] In Patent Document 2, the above-mentioned problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B33Y10/00B33Y70/00B29B9/12
CPCB29C64/118B33Y10/00B33Y70/00B29B9/12B29C48/05B29C64/314D02G3/404D10B2101/12B29C48/266B29C48/397B29K2995/007B29K2307/04B29K2021/003B29C70/38B29C70/382B29C64/321B29C64/209B33Y70/10B29K2105/0058
Inventor 汤浅亮平埜村卓志
Owner KYORAKU CO LTD