What SEDECO USA does

SEDECO USA, Inc. is the North American distribution and service arm of Seidensha Electronics Co., Ltd., the Japanese manufacturer that introduced the world's first ultrasonic plastic welder in 1961. Incorporated in November 2005 and headquartered in West Chester Township, Ohio, the company markets and supports the SONOPET line of ultrasonic plastic welders alongside complementary induction, impulse, laser, and RF welding systems to industrial manufacturers.

The company's product portfolio centers on plastic welding and cutting technology, anchored by the SONOPET ultrasonic welder family (including the 303S portable welder launched in 2007 and the SONOPET II generation) and supported by custom horn fabrication from its Cincinnati facility, which advertises two-week lead times on application-specific tooling. Differentiated technology components include the J-Tool welding management software, which the company describes as capable of storing up to 5 million weld parameter data points per file, providing traceability and process control for regulated manufacturing environments.

SEDECO USA operates a B2B, quote-based industrial equipment sales model targeting manufacturers in segments including general manufacturing, packaging, food processing, and non-woven/medical textiles. Revenue is generated through equipment sales, custom horn fabrication, and ancillary J-Tool software, with no disclosed per-unit pricing, customer count, or revenue. As a subsidiary of a privately held Japanese parent, the company does not publish standalone financial information.

Name

SEDECO USA

Legal name

Sedeco USA, Inc.

Website

https://sedecousa.com

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

51–100 employees

Short description

SEDECO USA is the Ohio-based North American subsidiary of Japan's Seidensha Electronics, distributing and supporting the SONOPET line of ultrasonic, induction, impulse, laser, and RF plastic welding systems to industrial manufacturers, with custom horn fabrication and J-Tool welding management software.

Ownership category

akta.pro rank

Product category

Industrial Welding Equipment

NAICS

Welding and Soldering Equipment Manufacturing (333992)

SIC

Metalworkg Machinery & Equipment (3540), Special Industry Machinery (No Metalworking Machinery) (3550)

akta.pro primary industry

Welding, Joining & Soldering Equipment (Arc, Resistance, Friction, Brazing) (IMAHADAH)

Keywords

• Ultrasonic plastic welding
• Industrial welding equipment
• Plastic cutting technology
• Induction heating equipment
• Custom ultrasonic horns

Headquarters

HQ city

Columbus

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales

Revenue model

1. Plastic Welding Equipment Sales: Sale of industrial plastic welding and cutting equipment including ultrasonic welders, induction heaters, impulse welders, laser welding systems, and radio-frequency welders. Products are sold directly to manufacturing and industrial clients.
2. Custom Tooling and Jigs: Custom design and fabrication of tool horns and jigs for ultrasonic equipment, produced in-house at Cincinnati, OH facility with fast delivery.
3. After-Sales Services: Support, maintenance, operator training, and after-sales services for installed equipment.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

SEDECO USA sells and supports industrial plastic welding, cutting, and assembly equipment — primarily SONOPET-branded ultrasonic welders, plus induction heaters, impulse welders, laser welding/cutting systems, and radio-frequency welders — to manufacturing and industrial clients across North America. The company also fabricates custom ultrasonic horns and jigs at its Cincinnati, OH facility, provides after-sales support, maintenance, and operator training, and offers the J-Tool Windows-based weld management software.

Product overview

SEDECO USA is a manufacturer and distributor of plastic welding and cutting technology, and the North American subsidiary of Seidensha Electronics Co., Ltd. (Japan). The company operates a multi-platform portfolio of welding technologies anchored by its SONOPET ultrasonic welder line — including the handheld/compact JII 4X0/9X0 and 4X1/9X1 SA series (offered in 400W and 900W power classes at multiple frequencies), the prior-generation D-series portable welders, and press mount welders — supplemented by specialized application modules for metal splicing, food cutting, packaging, and non-woven fabric processing. Beyond ultrasonic, the company distributes or manufactures induction heaters (Crystal Fire UHT-320A/B/C, UHT-302A), impulse welders (TPH Series, UI-500/1000), laser welding systems (LS-W100 with diode laser oscillator LU-W100 and CO2 laser for cutting), radio-frequency welders (KV Series), and custom machine design services. Core enabling components include ultrasonic horns, generators, transducers, automation components (JII-SIU external transducer switch), and the J-Tool Windows-based welding management software for data management and PLC integration. The company also offers CO2 laser cutters and communication machines. All products are supported regionally from the West Chester Township, OH headquarters, with horn fabrication performed in-house at the Cincinnati, OH facility.

Differentiator

Problem solved

Functional benefit

Brands

• SONOPET: Brand of ultrasonic welders manufactured by Seidensha, including JII Series portable welders, D-series welders, and various press mount models
• J-Tool
• JII Plus

Products and services

• SONOPET JII 4X1/9X1 SA Series Ultrasonic Welders Compact ultrasonic welder series (4X1 for 400W, 9X1 for 900W) combining JII 4X0/9X0 SA functions with a touch-button and LCD interface from the prior D-Series; higher base output amplitude, storage for 32 parameter settings, and on-the-fly adjustments without a smart device.
• SONOPET JII 4X0/9X0 Series Ultrasonic Welders Compact ultrasonic welder (4X0 at 420W, 9X0 at 900W) with boosted amplitude, Bluetooth connectivity via the JII Plus app, and PLC communication via Discrete I/O, EtherNet/IP, CC Link, and Industrial CC Link.
• SONOPET JII 400 Series Handheld Ultrasonic Welder Lightweight handheld ultrasonic welder delivering up to 420W maximum power at 19.15kHz, 28.5kHz, or 39.5kHz frequencies with ergonomic 470g transducer, finger trigger, and multiple weld modes (Continuous, Time, Energy, Power, AND/OR); JII 47XSA variant offers dual 28.5kHz and 39.5kHz on a single generator.
• SONOPET JII 900 Series Ultrasonic Welder Mid-power automation ultrasonic welder delivering up to 900W maximum power at 19.15kHz, 28.5kHz, or 39.5kHz frequencies; supports up to 10 transducer units daisy-chained from a single generator, stores 32 parameter settings; 97XSA model offers dual-frequency (28.5kHz and 39.5kHz).
• SONOPET D-series Portable Welders Versatile portable ultrasonic welder suitable for hand welding and embedding into automated equipment, with multiple generation control modes (time, energy, continuous, peak power, AND/OR logic) and Ethernet connectivity for remote data collection via J-Tool software.
• SONOPET Press Mount Ultrasonic Welders High-power press mount ultrasonic welders available in S-Type (integrated load cell with depth control as fine as 2μm, precision regulator, magnetic liner encoder) and B/S-Type (weld by Time/Energy/Power with pre-weld error detection and weld-complete judgment).
• Metal Splicing Solutions Ultrasonic metal splicing systems that join like and different metal materials with reduced power consumption, solid-phase binding at low temperatures, and maintained electrical conductivity, available in Compact and High Power configurations including wire splicing for wires up to 10sq; reduces power loss up to 30% via proprietary tool horn supporting mechanism.
• Ultrasonic Cutters Ultrasonic cutting systems for automated cells or handheld welder units used to trim molded plastic parts, cut carton boxes, halfway-cut plastic parts, and cut plastic runners; available in 400W and 900W configurations for multi-axis robot mounting.
• Ultrasonic Food Cutting Systems Ultrasonic food cutting systems that eliminate mess from conventional knife cutting, providing smoother cuts, minimal food waste, and clean cutting without food sticking to the blade; available in hand-held and manual-press cutter configurations for food processing operations.
• Ultrasonic Packaging Sealing Systems Environmentally friendly ultrasonic sealing systems that achieve hermetic seals with 1mm seams versus 10–15mm heat-sealing, available in Rotary Ultrasonic Sealing Unit, Wide Sealing by Multi-Transducer Horn (up to 300mm joints), Bag Top Sealing Unit, and Vertical Tube Sealing Unit configurations.
• Non-Woven Ultrasonic Sewing Solutions Ultrasonic solutions for non-woven fabric processing including a Rotary Ultrasonic Sewing Unit (up to 45m/min continuous welding of up to 6 layers with customizable anvil faces) and a Turnkey Ultrasonic Sewing Machine with foot pedal control, used for mask and medical gown production.
• Crystal Fire UHT-320A, B, C Induction Heater/Welder Electromagnetic induction heater/welder using non-contact IH (Induction Heating) technology in which high-frequency AC through an induction coil heats ferrous materials internally via eddy currents; more energy efficient than cartridge heaters, extends component lifetime, and suitable for hotplate welding applications.
• UHT-302A 300W Portable Induction Heater Handheld induction heater that heats metal workpieces in less than 10 seconds; portable design for use in varied situations.
• Impulse Welder TPH Series Impulse welder that welds thermoplastic resin via external heat conduction through a low-voltage, high-current energized heater; thermally efficient with cooling-under-pressure for clean forming, fast start-up, minimal temperature unevenness, and vibration-free operation; available in Transformer Integrated and Separated models.
• TPH Hand Welder UI-500/1000 Handheld impulse welder model for manual thermoplastic film and sheet welding, enabling easy and precise control during operation.
• Laser Resin Welding System LS-W100 Laser welding system using semiconductor lasers for vibration-free, non-contact plastic welding with minimal thermal effects and clean weld lines; compatible with 3D machining and a wide variety of products, accompanied by Diode Laser Oscillator LU-W100.
• Radio-Frequency Welders KV Series High-frequency (RF) plastic welders available in 3kW and 4kW models compliant with CISPR11; basic, versatile small machines noted for low price and space-saving design, with customization available on request.
• Custom Machines Custom machine design and fabrication services tailored to specific customer needs, delivering bespoke equipment for optimal efficiency and performance.
• Custom Ultrasonic Horns Custom tool horns fabricated in-house at SEDECO USA's Cincinnati, OH facility for any-and-all brands of ultrasonic equipment; deliveries in two weeks or less, with optional chrome plating for durability and high-amplitude designs.
• J-Tool Welding Management Software Windows-based PC software for SONOPET J/JII-series welder management featuring weld result data display/save/retrieve, time-elapsed weld process visualization (power output, pressure, weld depth), parameter setting management (retrieve, edit, upload via USB/Ethernet), generator status monitoring with alarm alerts, customizable external I/O command settings, weld result graph analysis, statistics chart applications, and the ability to save data of up to 5 million weld points.
• CO2 Laser Cutter CO2 laser cutting system for plastic processing; non-contact machining with no cutting debris, high versatility, and no short-term consumables; used for secondary processing of resins alongside semiconductor laser welding.

Quantifiable outcome

• Up to 30% power loss reduction with unique tool horn supporting mechanism in metal splicing
• +4 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators4 records

Recent moves4 records

Expansion highlights4 records

Direct peers

• Dukane Intelligent Assembly Solutions: Dukane designs and manufactures ultrasonic welding equipment, including handheld and automated systems for plastics, with extensive North American sales and service. Direct competitor to SEDECO's SONOPET line for the same automotive, medical, and packaging customers.
• Rinco Ultrasonics: Rinco is a Swiss-based supplier of ultrasonic welding equipment for plastic parts, with a North American sales presence. Comparable product portfolio to SEDECO for automotive, consumer goods, and technical plastics.
• Schunk Sonosystems: Schunk Sonosystems specializes in ultrasonic metal and plastic welding, including non-woven and battery applications. Overlaps with SEDECO on plastic assembly and metal splicing sub-product lines.
• Sonobond Ultrasonics: Sonobond manufactures ultrasonic bonding equipment for plastics, nonwovens, and textiles, with strong US presence. Direct overlap with SEDECO in non-woven and medical disposable welding applications.
• Sonics & Materials: Sonics & Materials is a US-based manufacturer of ultrasonic welding and cutting equipment, including handheld and bench-top welders. Competes head-to-head with SEDECO in plastics assembly and offers comparable custom tooling services.
• Herrmann Ultrasonics: Herrmann is a German-headquartered manufacturer of ultrasonic welding systems for plastics, packaging, and textiles with global reach. Comparable to SEDECO in technology scope and verticals, with stronger European footprint.
• Telsonic Ultrasonics: Telsonic manufactures ultrasonic welding and cutting systems for plastics, nonwovens, and food, including rotary and press-mount configurations. Closely matches SEDECO's non-woven and packaging ultrasonic solutions.

Regional players

• Mecasonic: Mecasonic is a French-based manufacturer of ultrasonic welding machines for plastics, primarily serving European automotive and consumer goods customers. Comparable technology to SEDECO but with limited North American commercial reach.

Emerging players

• Forward Technology: Forward Technology designs custom plastic assembly and testing equipment, including ultrasonic, vibration, and spin welding cells. Smaller custom-engineering peer to SEDECO's custom-machines offering, focused on turnkey automated cells.

Broad incumbents

• Emerson (Branson Ultrasonics): Emerson's Branson division is the global leader in ultrasonic plastic welding, offering handheld, press-mount, and automation systems plus global service. Directly overlaps SEDECO's SONOPET portfolio but operates at much larger scale across automotive, medical, and consumer goods.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks1 record

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SEDECO USA