Filament, winding body, and method for manufacturing shaped object
A filament composition with semi-aromatic and crystalline aliphatic polyamide resins, combined with nucleating agents and carbon black, addresses slow crystallization issues in 3D printing, enhancing stability and precision.
JP2026026700APending Publication Date: 2026-02-18GLOBAL POLYACETAL CO LTD
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Patent Information
- Application Number
- JP2024128991
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2026-02-18
AI Technical Summary
Technical Problem
Semi-aromatic polyamide resins used in 3D printing exhibit slow crystallization times, leading to shifting or loosening of printed parts during the process, and require improved filament supplyability and melt lamination properties.
Method used
A filament composition comprising semi-aromatic and crystalline aliphatic polyamide resins with specific crystallization time differences, blended with inorganic crystal nucleating agents, fatty acid metal salts, and carbon black, to enhance crystallization speed and prevent part shifting.
Benefits of technology
The solution provides improved filament supplyability and melt lamination properties, ensuring stable and precise 3D printing with reduced part shifting and loosening.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide a filament excellent in filament feeding property to a 3D printing device and melt-laminating property, and a wound body.SOLUTION: A filament according to the present disclosure is a filament for use in three dimensional modeling by fused deposition modeling, the filament including a semi-aromatic polyamide resin (a- 1) and a crystalline aliphatic polyamide resin (a- 2) in a total proportion of at least 70 mass% of the filament, the difference between the semi-crystallization time of the (A-1) semi-aromatic polyamide resin and the semi-crystallization time of the (a- 2) crystalline aliphatic polyamide resin is 1 to 500 seconds (wherein the semi-crystallization time is measured by depolarization photometry under the conditions of a sample melting temperature of the melting point of the polyamide resin + 30 °C, a sample melting time of 3 minutes, and a crystallization oil bath temperature of 140 °C). The mass ratio of (A-1) / (A-2) is 95 / 5 to 80 / 20, and the filament further contains (B) an inorganic crystal nucleating agent in a proportion of 0.1 to 10% by mass relative to the filament.SELECTED DRAWING: Figure 1
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