RPS-SONIC
RPS-SONIC is the brand of Hangzhou Gonglv Ultrasonic Equipment. It sells ultrasonic plastic and nonwoven welding, cutting-and-sealing machines and core parts such as transducers, boosters and horns. Tell RPS-SONIC first whether you need a matched component, a handheld tool or an automated station.
杭州功律超声波设备有限公司
Hangzhou, Zhejiang, China
By WeldOrigin Editorial · Sources checked
In this profile
What RPS-SONIC sells
Hangzhou Gonglv Ultrasonic Equipment trades as RPS-SONIC and describes itself as a developer, producer, seller and service provider. Its company page names ultrasonic joining of plastics and nonwovens, ultrasonic cutting and liquid treatment. It also sells the core parts of an ultrasonic stack: transducers, boosters and tools, usually called horns. The homepage shows several cutting-and-sealing machines. Each category answers a different job, so frame your enquiry around one of them.
The exact company name appears on a 2024 technology-enterprise intake list for Zhejiang, published on the SME service platform. It lets you check the seller named on a quotation. The website also talks about patents, quality and service. Ask for documents on the specific machine you are buying, and plan a trial on your own parts.
Handheld, bench or automated
First decide how the joint will be made. An operator may hold the tool, a bench fixture may hold the part, or the stack may sit inside an automated machine. Mark every joint location on the drawing, note any access limits and state the material and the finished result you need. A handheld tool depends on the operator's position and steadiness. An automatic station depends on how the part is fed and located.
For repeated manual work, describe reach, access and how the part is supported while the operator welds. For an automated line, define the feed, the tool approach and the release of the finished part. Ask RPS-SONIC to propose the whole arrangement and to say which steps stay manual. A photo of a portable unit shows the product. Ask for samples welded on your part before choosing between portable and fixed set-ups.
Plastic welding, nonwoven seams and cut-and-seal work
For plastic parts, give the polymer, any fillers and the joint design. For nonwovens, give the layer build, the seam or edge you want and what the product is used for. If one machine must cut and seal at once, define both results and the order in which the material moves through the machine. A clean cut edge and a strong seal are separate results, so test each against the finished product's needs.
Ask for samples that cover your real production variation. Agree cosmetic limits, dimensions and physical tests with your product team before the samples are made. RPS-SONIC also lists food cutting, liquid treatment and atomisation applications. Those have their own specifications, so keep your welding enquiry to the welding task. The catalogue is best read with your part in hand.
Buying transducers, boosters and horns
If you need a transducer, booster or horn for a machine you already own, send the existing part numbers, connections, dimensions and details of the generator and controls. Ask RPS-SONIC for a written compatibility answer and a list of any modifications. Choosing a part by frequency or power alone leaves mechanical, electrical and application questions open.
Agree who accepts the rebuilt system and how its welds are compared with those from the previous setup. Ask for horn drawings or identifiers good enough to reorder an identical part. For a new package, list the generator, components, tooling and mounting that ship together. The component range gives you a starting point. Treat a single part bought on its own as untested in your application until your welds pass.
Running the trial
Agree the inspection for your seam or joint before the trial starts. Use realistic material and fit-up variation, and keep the rejected samples as well as the good ones. Watch the whole cycle: preparation, placement, welding or cutting and sealing, and removal of the part. The moment the horn touches the part is a small piece of the job.
Write down the equipment and horn used, the settings and any operator corrections for each good sample. If the process is handheld, check consistency across every working position you will use. For roll material, include start-up, stops and a material change. Compare good output over the same observation period each time, with a test method chosen by your own technical staff.
Turning service promises into a handover plan
Request manuals, utility requirements and current documents for the model on the quote. Ask which horns and components are included, how spare parts are identified and who diagnoses a weld problem after delivery. RPS-SONIC advertises around-the-clock service. Agree the contact channels, response times and responsibilities in the quotation so the promise becomes a written term.
For an automated station, request wiring information, interface details, the accepted settings and backups of any program. Set out training, installation and the recheck needed after a component or material change.
Confirm before ordering
Close the open points on paper before you pay a deposit. RPS-SONIC should state delivery time, stock, warranty, price and certificates for the configuration you are buying. Match the seller's name to Hangzhou Gonglv on the quote and invoice, and make sure the trial setup, horn identifiers and support terms are written into the order.
Compare the published product scope
Product families serve different tasks. Use the configuration and acceptance questions to request a quotation for the same work.
On a small screen, scroll sideways to read all three columns.
| Product family | Published scope | Before selecting |
|---|---|---|
| Plastic and nonwoven welding [1] | Both are named in the company description. | Send materials, joint or seam design and the function the finished part must perform. |
| Cutting-and-sealing equipment [1] | Several examples appear on the current homepage. | Test the cut and the seal separately inside the real handling cycle. |
| Transducers, boosters and horns [1] | Offered as a separate line of core components. | Send your existing system documents and ask for a matched compatibility answer. |
| Liquid treatment [1] | Listed among the company's ultrasonic applications. | Raise it in a separate enquiry with its own specification. |
Buyer questions
Who is behind the RPS-SONIC brand?
Hangzhou Gonglv Ultrasonic Equipment Co., Ltd., which names itself on the RPS-SONIC company page. The same name appears on a Zhejiang 2024 technology-enterprise intake list. [1] [2]
Can a handheld tool replace an automatic station?
Sometimes. Compare locating, operator work, repeatability and good output on your actual part before choosing.
Is a sealed edge the same as a good joint?
Only if it passes your test. Set the strength or functional requirement and check representative samples against it.
Can I order a transducer by its frequency?
Frequency alone is too little. Send the mechanical, electrical and control details of your machine and ask RPS-SONIC to confirm the match in writing.
Build a useful project brief
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Sources
Facts on this page come from the manufacturer's own publications and the public records listed below, checked on the date shown. Ask the manufacturer to confirm the exact configuration, documents and terms for your order in writing.
- RPS-SONIC · About RPS-SONIC (Hangzhou Gonglv Ultrasonic Equipment)
Manufacturer publication · Checked 2026-10-11
The company page names Hangzhou Gonglv as the business behind RPS-SONIC and lists plastic and nonwoven welding, ultrasonic cutting, liquid treatment and core components.
- SME service platform · Zhejiang 2024 third-batch technology-enterprise intake list
Public record · Checked 2026-10-11
A Zhejiang intake list from 2024 that includes the exact Hangzhou Gonglv company name. Useful for matching the seller on a quote.