Injection Molding Capabilities
How many injection molding machines does Yomura operate?
Yomura operates 75 injection molding machines in total: 43 horizontal single-injection machines, 14 vertical single-injection machines, 16 double-injection (two-shot) machines, and 2 micro molding machines.
What is the tonnage range of Yomura's machines?
Single-injection machines range from 30 to 600 tons. Double-injection machines range from 70 to 250 tons.
Does Yomura offer single-cavity and multi-cavity molds?
Yes. For thermoplastic materials, Yomura typically runs up to 8 cavities. For thermosetting materials, Yomura has run molds with as many as 1,200 cavities.
What is Yomura's typical shot size range?
Shot sizes range from 0.006 g to 1,500 g, covering everything from micro-molded components to larger parts.
What materials does Yomura commonly mold?
PC, PC/ABS blends, PP, POM, PA, TPU, TPR, PMMA, and reinforced plastics with carbon fiber (CF) or glass fiber (GF) reinforcement.
Micro Molding
What tolerances can Yomura hold on micro-molded parts?
Yomura typically holds tolerances as tight as ±0.015 mm on micro-molded parts.
What is the smallest part Yomura has produced?
Yomura has successfully produced parts as small as 6.05 x 4.85 x 0.49 mm, weighing just 0.006 g.
What is micro molding typically used for at Yomura?
Common applications include optical equipment frames and light pipes for radio devices.
Two-Shot / Double-Shot Molding
What material combinations does Yomura run in two-shot molding?
Common combinations include PC with TPE/TPU, PC with ABS, and ABS-on-ABS using two different colors.
What are examples of Yomura's two-shot molding work?
Representative applications include computer keyboards, waterproof (IP68-rated) housings with TPE overmolded onto rigid plastic, and bumper feet for Apple MacBook laptops.
What sets Yomura's two-shot capability apart?
Two areas stand out: IP68 waterproof housings using TPE overmolding on plastic substrates, and micro-molded components produced via two-shot injection.
Contract Assembly
What assembly processes does Yomura offer?
Yomura provides full and partial EMS (electronics manufacturing services) product assembly, including PCBA, functional testing, and packaging. Post-molding value-add processes include ultrasonic welding, high-frequency welding, heat staking, hot foil stamping, automatic soldering, automatic dispensing, benchtop CNC milling, ultrasonic cleaning, laser engraving, and vacuum sealing.
Does Yomura offer full turnkey assembly?
Yes — Yomura provides full turnkey assembly of multiple components into a finished product, as well as component-level assembly only.
Certifications and Quality
What certifications does Yomura hold?
ISO 13485, AS9100, ISO 9001, ISO 14001, ISO 14064-1, and ISO 27001.
Does Yomura operate a cleanroom?
Yes — an ISO Class 7 cleanroom for product assembly and an ISO Class 8 cleanroom for injection molding.
What quality control and inspection equipment does Yomura use?
Yomura uses PPAP and 3Q (IQ/OQ/PQ) processes, MSA, FMEA, and SPC/Cpk analysis, along with 4 Micro-Vu CMMs, 1 Keyence CMM, 1 ATOS 3D scanner, 1 Keyence 3D scanner, and automatic visual inspection systems.
Industries and Applications
What industries does Yomura serve?
Aerospace, automotive, medical, computer, communication, and consumer electronics, as well as industrial products and fashion.
What kinds of components does Yomura produce for aerospace, automotive, and medical customers?
Aerospace: interior plastic components, decorative plastic covers and buttons for passenger aircraft, and blade wings for drones. Automotive: safety-related parts, seat belt buckle covers, locker sliding doors, and lightweight structural components. Medical: non-implantable devices and precision-molded components for medical applications.
What other notable products has Yomura made?
Drone wings made of high-strength CFRP (carbon-fiber-reinforced plastic), military-grade night vision devices, and electric bicycles.
Capacity and Scale
How large is Yomura?
Yomura has 250 employees across 5 plants totaling 23,500 square meters.
What is a typical lead time from RFQ to first samples?
After DFM (Design for Manufacturability) is confirmed: 3–4 weeks for single-injection tooling, and 5–6 weeks for double-injection tooling.
What is a typical timeline from prototype approval to full production?
Consumer products: 1–3 months. Medical devices: 2–7 months. Aerospace: 10 months–2 years. Industrial applications: 7–9 months.
Company Background
When was Yomura founded, and what notable milestones has it reached?
Yomura was founded in 1989. The company uses 3D printing for prototype samples and is a certificate holder of the Taiwan Mittelstand Company Award.
What advantages does being Taiwan-based offer Yomura's customers?
Yomura runs an EROWA robot automation system for 24-hour mold fabrication (Industry 4.0), and offers EMS assembly contract manufacturing that extends beyond in-house tooling and molding.
Does Yomura offer English-speaking engineering and sales support for international clients?
Yes — Yomura has 4 sales managers with master's degrees from U.S. universities, and a consultant who holds a PhD from the University of Akron.