Which materials we weld, and which we don’t
Thread-free, stitch-free, watertight joining for technical fabrics and non-wovens: geotextiles, high-performance garments, filtration, sun protection and medical supplies. We weld fabrics and flexible synthetic materials: not metal or rigid plastics.
Maquinorya is the official representative of PFAFF Industrial in Spain for welding and heat sealing machines. See on the PFAFF websiteGuides on ultrasonic welding
Before looking at models, four articles that answer the questions that always come up: whether your material is suitable, how the process works, how it differs from the other technologies and whether it pays to stop sewing.
Which materials can be ultrasonically welded
Thermoplastics, non-wovens and coated fabrics yes; cotton, linen and leather no. And what to do with blends, which is where most real cases are.
How an ultrasonic welding machine works
Generator, converter, sonotrode and roller. Why the heat is generated inside the material and which parameters are adjusted for each fabric.
Ultrasonic, hot air or hot wedge: which to choose
The four textile welding technologies compared by heat source, suitable materials and thicknesses.
Sew or weld: when it pays to change process
The four filters for deciding, starting with the one that settles most cases: whether the seam has to be watertight.
Would you rather skip the theory? Send us a sample of your material and we will tell you directly whether it welds and with which settings.
PFAFF 8310-041/004
Programmable ultrasonic welding machine in vertical post version. Seamsonic series with electronic control of power, amplitude, speed and pressure. Frequency 35 kHz, 400 W. P1 touch panel with SD and USB.
Main features
- 35 kHz ultrasonic welding for joints without adhesives or consumables on technical fabrics
- Vertical post version with Seamsonic electronic control of power, amplitude and speed
- 400 W power for efficient welding of non-wovens, microfibre and synthetics
- P1 touch panel with program memory, SD reader and USB for series production
Technical specifications
- Frequency: 35 kHz
- Power: 400 W
- Speed: 0.5 to 10 m/min
- Type: vertical post
- System: Seamsonic with electronic control
- Voltage: single-phase 230 V, 50/60 Hz
Applications
Frequently asked questions
What is the advantage of ultrasonic welding over thread? Ultrasonic welding creates a molecular bond that does not fray or leak, with no need for thread or adhesives, resulting in a cleaner, stronger seam with zero consumables on synthetic materials.
Is it suitable for series production? Yes, its Seamsonic system with programmable control and touch panel reproduces exactly the same parameters in every cycle, ensuring consistent quality in large-scale production.
PFAFF 8311-001/002
New generation ultrasonic welding machine with continuous monitoring of welding force. Control of speed, energy and force. Innovative dual roller system. Speed 0.5 to 10 m/min.
Main features
- New generation with continuous real-time monitoring of welding force
- Innovative dual roller system for greater seam uniformity and quality
- Control of speed (0.5 to 10 m/min), energy and force for full precision
- Automatic detection of welding faults for quality assurance in production
Technical specifications
- Speed: 0.5 to 10 m/min
- System: innovative dual roller
- Monitoring: continuous welding force
- Control: speed, energy and force
- Voltage: single-phase 230 V, 50/60 Hz
Applications
Frequently asked questions
What does continuous force monitoring mean? The system measures the welding force applied at each point of the seam in real time and alerts the operator if it detects any variation outside tolerance, ensuring every seam has the same quality and strength.
Is it compatible with quality standards? Yes, continuous monitoring makes it easier to comply with quality control standards such as ISO and EN for technical and safety products.
PFAFF 8311-103/001
Cut & Seal version: welding and cutting in a single operation. Motor-activated cutting wheel. Ideal for technical fabrics, filters, medical supplies and outdoor garments. High-strength micro-seams.
Main features
- Cut & Seal: welding and cutting in a single operation for maximum productivity
- Built-in motor-activated cutting wheel for a clean cut at the same time as sealing
- Control of welding speed, energy and force with real-time monitoring
- Ideal for high-strength micro-seams on technical fabrics and medical supplies
Technical specifications
- Speed: 0.5 to 10 m/min
- System: Cut & Seal (simultaneous welding and cutting)
- Cutting wheel: motor-activated
- Monitoring: continuous welding force
- Voltage: single-phase 230 V, 50/60 Hz
Applications
Frequently asked questions
What is the Cut & Seal function? It welds and cuts the material in a single step, removing the need for a separate cutting operation, halving the cycle time and ensuring perfectly sealed edges with no fraying.
Which fabrics is it suitable for? Non-wovens, microfibre, synthetics and technical fabrics. It is not suitable for cotton or other natural fibres, which cannot be ultrasonically welded.
PFAFF 8311 Long Arm
Long arm version (1,000 mm) with continuous monitoring of welding force. Optimal for large pieces such as industrial filters, medical mattresses, canvas and large-format technical materials.
Main features
- 1,000 mm long arm for working with large-format pieces without space restrictions
- Continuous monitoring of welding force along the whole seam length
- Control of ultrasonic welding speed (0.5 to 10 m/min), energy and force
- Dual roller system for even welding on large technical materials
Technical specifications
- Speed: 0.5 to 10 m/min
- Arm length: 1,000 mm
- System: dual roller with continuous monitoring
- Monitoring: continuous welding force
- Voltage: single-phase 230 V, 50/60 Hz
Applications
Frequently asked questions
Why would you need a 1,000 mm arm? The long arm lets you work with large-format pieces without moving the machine, which improves seam quality by always keeping the same position and pressure on the material.
Does it have the same functions as the standard model? Yes, it includes all the advanced functions of the 8311 series, including continuous force monitoring, the dual roller system and full electronic control, adapted for large-format work.
Models and documentation
- Models: PFAFF 8311 · PFAFF 8311 long arm · PFAFF 8310-041/001 · 8310-041/002 · 8310-041/005
- For awnings, screens and sun protection: ultrasonic welding from Jentschmann. Welding with WeldSonic Solo · WeldSonic Twin 4.0 · WeldSonic Blind · WeldSonic Filter · ScreenSonic 360; edge cutting and sealing with CutSonic and CutSonic Pro.
- Documentation to download: PFAFF 8310 · PFAFF 8311
- Not sure which technology suits your material? Send us your case with photos and we will advise you.