Sumdawelder | Hot Air Seam Sealing & Welding Machines Manufacturer Since 2006

About Sumdawelder

Sumdawelder has been a leading manufacturer and supplier in the field of hot air seam sealing machines and hot air welding machines since 2006. Based in Changzhou, China, we specialize in high-quality industrial bonding solutions for a wide range of applications including waterproof garments, inflatable products, tarpaulins, PPE, and technical textiles.

Our commitment to innovation, reliability, and competitive pricing has made us a preferred partner for businesses worldwide. We offer not only advanced machinery but also compatible consumables like hot melt seam sealing tape, enabling one-stop procurement for our clients.

China Manufacturer Since 2006 OEM/ODM Services Worldwide Shipping

Our Products

Explore our comprehensive range of industrial hot air seam sealing and welding machines designed for precision, durability, and efficiency across multiple sectors.

SD-W900

Hot air welding machine ideal for inflatable products such as boats, tents, water tanks, and paddle boards. High-temperature stability and consistent airflow ensure strong, waterproof seams.

Welding Type: Overlap & Hem

SD-T101

Precision hot air seam sealing machine for attaching seam sealing tape on stitched seams in waterproof garments. Combines temperature, speed, and air pressure control for optimal bonding.

Application: Garments, PPE

SD-T200

Advanced hot air seam sealing machine with digital temperature control and adjustable conveyor speed. Suitable for high-volume production environments requiring consistent sealing quality.

Digital Control System

SD-T100

Compact and efficient hot air sealing machine for small to medium-scale operations. Designed for ease of use and reliable performance in garment and textile sealing applications.

Compact Design

SD-T600

High-capacity hot air seam sealing machine with wide sealing width and powerful heating system. Ideal for industrial applications requiring continuous, high-strength bonding.

High Throughput

SD-T200S

Enhanced version of the SD-T200 with improved airflow dynamics and thermal efficiency. Offers superior sealing consistency for sensitive materials and critical applications.

Enhanced Performance

Hot Wedge Welding Machine

Hot Wedge Welder

Used for welding thick PVC and HDPE materials. Ideal for tarpaulin, geomembrane, and industrial cover applications. Capable of both overlap and hem welding.

Max Temp: 700°C

Ultrasonic Sewing Machine

Ultrasonic Machine

Non-thermal bonding solution using ultrasonic vibration. Perfect for heat-sensitive fabrics and technical textiles where traditional heat sealing is not suitable.

Cold Bonding Technology

Heat Pressing Machine

Versatile machine for applying heat-activated adhesives, laminates, and transfers. Used in garment, bag, and accessory manufacturing.

Adjustable Pressure & Temp

Water Pressure Tester

Quality assurance tool for testing the waterproof integrity of sealed seams in inflatable and outdoor products. Ensures compliance with industry standards.

Quality Control

Seamless Bonding Machine

Specialized for underwear and intimate apparel manufacturing. Creates smooth, comfortable seams without stitching, enhancing product comfort and durability.

Apparel Industry

High Frequency Welder

High Frequency Welding Machine

Utilizes electromagnetic energy to weld PVC and other thermoplastic materials. Offers fast cycle times and strong, airtight seals for medical, automotive, and inflatable products.

RF Welding Technology

View All Products on Official Site

Our Services

Comprehensive support to ensure your success from testing to after-sales care.

Free Sample Test

We offer free sample testing before order placement to ensure compatibility and performance with your materials and production requirements.

OEM/ODM Service

Customization available for agent clients. We support private labeling and design modifications to meet your brand and market needs.

Packaging & Delivery

Robust packaging designed for international shipping. Reliable logistics partners ensure safe and timely delivery worldwide.

After-Sale Service

1-year warranty on all machines. Free technical consultation and support after purchase to ensure optimal operation and uptime.

Latest News

Stay updated with our latest developments and industry insights.

May 8, 2021

Hot Air Welding Machine for Inflatable Products

Our hot air welding machines are ideal for manufacturing inflatable boats, tents, water tanks, paddle boards, and other PVC inflatable products. Sumdawelder offers high-performance solutions at competitive prices in China.

May 28, 2019

Hot Air Seam Sealing Tape for Waterproof Garments

Discover how hot air seam sealing tape enhances the waterproof performance of outdoor and protective clothing. Learn about proper application techniques and compatible machinery.

February 22, 2016

Tarpaulin Hot Air Welding Machine

Our tarpaulin welding machines handle both PVC and HDPE materials with temperatures up to 700°C. Capable of overlap and hem welding for durable, weather-resistant seams.

February 22, 2016

Hot Air Seam Sealing Machine for PPE

Sumdawelder supplies complete PPE production solutions including seam sealing machines and compatible tapes. Achieve one-stop procurement with competitive pricing.

View All News on Official Site

Frequently Asked Questions

What is a hot air seam sealing machine?

A hot air seam sealing machine is an industrial garment machine that uses controlled temperature, speed, and air pressure to attach waterproof seam sealing tape over stitched seams, making them leak-proof.

Can your machines weld thick PVC materials?

Yes, our hot wedge and high-frequency welding machines are specifically designed for thick PVC and HDPE materials, with some models reaching temperatures up to 700°C.

Do you offer spare parts?

Yes, we supply a full range of spare parts for all our hot air seam sealing and welding machines to ensure minimal downtime and long equipment life.

Is technical support available after purchase?

Absolutely. We provide 1-year warranty and free technical consultation after sale to help you maximize machine performance and resolve any issues quickly.

Can I get a custom machine for my specific needs?

Yes, we offer OEM/ODM services and can customize machines based on your production requirements, material types, and throughput needs.

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Precision Hot Air Welding & Seam Sealing Solutions

18+ Years

Global Reach

1-Year Warranty