Hotty Polymer
Japanese rubber and plastics extrusion manufacturer that develops, manufactures and sells 3D printing filaments and provides 3D printing services alongside its core extruded rubber/plastic seals and gaskets business.
- CEO / Founder
- Hidetoshi Hotta (堀田秀敏)
- Team Size
- 51-200
- Stage
- Active
- Latest Round
- Bootstrapped
Technology & Products
Key Products
HP Filament series (including PLA/CNF and flexible types), stereolithography resins, resale and in-house development of 3D printers, DfAM software (nTop) consulting, 3D bone/organ model creation service, contract 3D modeling, and traditional rubber/plastic extrusion and compression molding products.
Technological Advantage
In-house rubber/resin compounding and extrusion know-how applied to filament formulation, enabling functional filament development (flexible, CNF-reinforced) that improves dimensional stability and heat resistance versus standard commodity filaments.
Patent position
Hotty Polymer filed 8 patent families in 2022–2024, up 60% from 5 in 2019–2021, while tracked AM filings in the same patent offices fell 1%, so it outpaced the broader trend. AMPulse analysis
- Filing momentum
- 8 families filed 2022–2024, 5 in 2019–2021 (+60%); all tracked AM filings in the same offices -1%
- Filed in
- JP 74%WO 11%CN 5%EP 5%US 5%
- Named competitors, AM patent families
- Asahi Kasei 12
19 AM patent families in total. Recent years are still being published, so read a filing change against the same-office figure.
Differentiation
Value Proposition
Combines decades of rubber and resin extrusion expertise with in-house filament R&D to provide one-stop 3D printing solutions - from material and printer consulting to filament manufacturing and contract modeling - alongside traditional extrusion and compression molding services.
How They Differentiate
Positions itself as a vertically integrated 'polymer solution expert' spanning rubber/plastic extrusion and 3D printing materials, rather than a pure filament reseller, enabling custom functional filament development such as CNF-reinforced PP/PLA for large-format dimensional stability.
Market & Competition
Target Customers
Manufacturers in automotive, healthcare/medical, construction machinery and electronics needing functional filaments, prototyping, or extruded rubber/plastic parts; also 3D printer resellers and trade-show/exhibition clients.
Industry Verticals
Automotive, Medical/Healthcare, Construction machinery, Electronics, Rail vehicles, Trade show/prototyping
Competitors
Asahi Kasei (KARAKSA CNF-reinforced PA filament line); global commodity filament suppliers (e.g., mainstream PLA/ABS/PETG brands); other Japanese functional-filament and extrusion-heritage material developers.
Growth & Milestones
Growth Metrics
Approximately 90-105 employees per multiple Japanese business registries (2023-2025 data); founded 1948, incorporated 1951.
Major Milestones
1948: company founded (rubber/plastics extrusion); 1951: formal incorporation; 2011: Thailand subsidiary established; 2019: launched 3D printing service business; Sept 2026: jointly launched CNF-blended polypropylene MEX filament with Nakagoshi Pulp Industry (nanoforest CNF).
AM patents
AM-relevant patents linked to this company.
- Patents
- 19
- Granted
- 3
- Families
- 19
Leading domains: process (19), equipment (8), material (1)
Filings by year: 2024: 1 · 2023: 1 · 2022: 6 · 2020: 4 · 2019: 1 · 2017: 4
- FILAMENT AND METHOD FOR PRODUCING SAME2018150599 · WO
- METHOD FOR PRODUCING SHAPED ARTICLE BY 3D PRINTER, AND 3D PRINTER CONTROL PROGRAM2024089853 · WO
- 樹脂成形方法および樹脂成形装置38083999|2026083999 · JP
- 3次元印刷装置29007213|2017007213 · JP
- 3次元印刷装置の造形物のプラットフォームへの定着方法32163671|2020163671 · JP
Equipment deals on record
Publicly disclosed purchases or installs only.
- Silicone 3D printer
1 systems · JPY 17,439,400
Buyer: National Institute of Advanced Industrial Science and Technology (AIST) · Supplier: Hotty Polymer Co., Ltd.