HR-15KW-FL Projection Screen Film HF Welding Machine | Custom Long Seam PVC Tarpaulin Membrane Welder

Author: Li Gong, Senior Application Engineer, DONGGUAN HIPOWER LTD

Published: Aug 8,2026 | Updated: Aug 8,2026

HIPOWER has specialized in industrial HF welding equipment for over 27 years, delivering customized long-seam plastic welding solutions for advertising, membrane structure, outdoor goods and inflatable product factories worldwide.

HIPOWER HR-15KW-FL Projection Screen HF Welder: One-Stop Efficient Welding Solution for Long-Size Soft Film Workpieces

Manufacturers producing projection screens, stretch ceilings, wide tarpaulins and membrane structures face common challenges: standard HF machines have short welding bars, requiring multiple segmented splicing which leads to weak seams, misalignment and water leakage; thick PVC coated and TPU fabrics cannot be fully fused and tend to peel; long welding seams easily deviate without positioning guides; frequent mould replacement for different product widths raises production cost. To solve these pain points, DONGGUAN HIPOWER LTD launches HR-15KW-FL dedicated HF welding machine for projection screen film. Equipped with a dedicated long welding bar, stable European oscillation system and laser positioning, it realizes one-step welding for long workpieces, supports both dedicated mass production and flexible multi-product processing, with full non-standard customization available.

Core Technical Features of the HR-15KW-FL

1. Stable 15KW High Power Output with Reliable European Oscillation Box

Equipped with 15KW HF power and premium 8T85RB electron tube running on 27.12MHz industrial frequency, with European standard square oscillation cabinet. The solid circuit structure delivers stable uniform energy with strong anti-interference performance. Thick PVC tarpaulin, TPU composite film and projection screen base material all achieve deep fusion with integrated strong tear-resistant seams. It supports 24/7 non-stop mass production with low failure rate and long service life.

2. Dedicated Long Welding Bar for One-Step Long Seam Forming

The long-strip welding bar is specially designed for projection screens, stretch ceilings and long tarpaulins. It completes the entire long seam in one welding cycle without multiple segmented splicing, greatly reducing seam defects and improving appearance and waterproof performance. The length and shape of the welding bar support full customization. We design exclusive welding moulds based on maximum product width, suitable for extra-wide projection screens and large-span membrane structures.

3. Laser Positioning Guide for Precise Zero-Offset Long Seams

Built-in laser positioning guide helps operators align workpieces accurately along the laser line. Long fabric seams stay straight and uniform, eliminating deviation and misalignment. It is especially suitable for products requiring high straightness such as projection screens and tensile membranes, ensuring consistent dimensional accuracy in mass production and reducing manual trimming and rework cost.

4. High-Sensitivity 5557 Anti-Flash Protection for Mould Safety

Standard high-sensitivity 5557 instant anti-spark system cuts HF power within milliseconds when abnormal flash occurs, effectively protecting long customized welding bars and internal core components. Input power filtering design eliminates grid fluctuation interference and protects electronic parts, reducing equipment loss and adapting to complex workshop power environments.

5. Customizable Worktable & Optional Auto-Tuning for Multi-Purpose Use

Worktable shape can be customized according to workpiece form with multiple options. Optional automatic HF tuning compensation system is available, with power upgradeable from 8KW to 35KW. One machine handles projection screens, tarpaulins, inflatable boats, flexible biogas digesters and membrane structures, flexibly adapting to multi-category orders.

6. Multiple Safety Designs for Reliable Mass Production

Ground pressure plate protection structure with front guard prevents operators from accidentally reaching the welding zone, improving operational safety. The whole machine complies with domestic and international workshop safety standards for stable long-time intensive operation.

7. Full Customization & Complete ODM/OEM Support

Welding bar length, worktable size, power rating and feeding structure can all be customized. Automatic feeding mechanism and unwinding/rewinding units can be added for continuous roll material welding. Private-label ODM & OEM service is available. We build exclusive long-seam welding production lines based on customer workshop layout and process requirements.

Suitable Applications & Compatible Materials

Dedicated Applications

Projection screen splicing, stretch ceiling welding, advertising light box film welding

General Applications

PVC tarpaulin, canvas, agricultural greenhouse film, architectural membrane, inflatable boats, flexible biogas bags, oil storage bags, PVC coated fabric, tensile membrane structure splicing

Compatible Materials

PVC, TPU, coated fabric, plastic film and all HF-weldable soft plastic fabrics

Supported Processes

Long straight seam welding, film splicing, soft edge sealing, thermal forming

Main Technical Specifications

Model: HR-15KW-FL

HF Output Power:15KW (8KW~35KW power customization available)

Electron Tube:8T85RB

HF Frequency:27.12MHz

Power Supply:AC 380V / 50Hz 3-Phase, voltage customizable for export

Input Power:25KVA

Max. Clamp Pressure:1000KGS

Max. Electrode Gap:150mm

Electrode Moving Range:100mm

Standard Welding Bar Size:5050900mm (length & shape fully customizable)

Optional Configurations: Auto-tuning system, laser positioning, automatic feeding mechanism, unwinding/rewinding unit

Overall/Packing Size: Final dimension subject to official quotation drawing

Remarks: Full machine customization acceptable, ODM & OEM supported; specifications subject to technical upgrade without prior notice.

Frequently Asked Questions

Can HR-15KW-FL weld extra-wide projection screens?

Yes. Welding bar length is not limited to standard size. We can customize extended bars to match maximum screen width, realizing one-step welding for full-width screens without multiple splicing.

Can it also process thick materials like tarpaulins and inflatable boats?

Yes. Worktable and welding bar are customizable. Optional auto-tuning system adjusts power output to fit different thicknesses of PVC/TPU coated fabrics, enabling one machine for multiple soft plastic products.

How to avoid crooked and misaligned long welding seams?

The machine is equipped with laser positioning guide. Operators align materials along the laser line to ensure straight seams, greatly reducing deviation and misalignment for consistent mass production.

Can we add automatic feeding for continuous production line?

Automatic feeding mechanism and unwinding/rewinding units are customizable for continuous roll material welding, reducing manual loading and unloading and supporting high-volume roll production.

What is the warranty policy for customized machines?

1-year full machine warranty plus lifelong remote technical support. Engineers offer on-site installation, commissioning and operator training. All technical inquiries get response within 24 hours.

Contact HIPOWER for Custom Welding Solution

All series HF welders (corner type, rotary type, cylinder type, projection screen type, hanging head type) support free material sample testing. Our engineers design tailored equipment based on workpiece size, fabric thickness and production capacity.

▶ Request Free Quotation ▶ Free Plastic Fabric Sample Test ▶ Download Machine Catalogue

Contact Info:

Email: hipower06@hi-pwr.com

WhatsApp:+86-135-9014-6525

Tel:+86-0769-8600-3636 ext.812

About DONGGUAN HIPOWER LTD

Founded in 1999 in Dongguan China, HIPOWER specializes in industrial HF welding equipment with 27 years of R&D experience. Our product portfolio includes projection screen welders, tarpaulin heat sealers, automotive interior HF machines, blister packaging machines and cylinder forming machines. All machines hold CE certification and export to over 60 countries globally. The HR-15KW-FL series focuses on long-seam non-standard customization, solving industry pain points of low efficiency, multiple seams and low yield caused by repeated splicing of wide films, projection screens and tarpaulins. We help advertising, membrane structure and outdoor goods factories achieve efficient high-quality mass production.