Invisible Comfort: Crafting Flawless Intimates with Our Ultrasonic Seamless Stitching Machine
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Invisible Comfort: Crafting Flawless Intimates with Our Ultrasonic Seamless Stitching Machine

Max Sewing Thickness: 5mm 
Working speed: 0~32m/min 
Voltage: 220V 
Power: 2500w 
Dimension(L*W*H): 1200*500*1100mm 
Weight: 100kg 
Certification: CE 
Warranty: 1 Year
  • SP-60-B

  • SP

  • 8543709990


Seamless BarInvisible Seams for Unmatched Comfort:

Our ultrasonic sewing machine operates at a high frequency of 20kHz, ensuring invisible seams that eliminate any discomfort or irritation caused by traditional stitching methods. Enjoy lingerie that feels like a second skin, offering a seamless and smooth finish.

Delicate Fabric Handling:

Designed to cater to the most delicate fabrics used in lingerie manufacturing, our ultrasonic sewing machine guarantees gentle handling. From lace to silk, the machine ensures precise bonding without compromising the integrity of the materials, resulting in exquisite and high-quality lingerie.

Applicable product

(1) clothes lace, (2) bed cover, (3) pillow cover, (4) car cover, (5) tent, (6) Packing belt, (7) backpack, travel belt, portable belt,(8) Curtains, (9) raincoat, trench coat, snow coat, (10) toys, (11) gloves, (12) tablecloth, (13) chair cover, (14) quilt cover, (15) mask,(16) Hair accessories, (17) ornaments, (18) umbrellas, (19) lampshades, (20) filters and so on.










Rotary Welding Horns Width


Real-time Display

Working Frequency and Working Current



Horn Material



Analog type



Ultrasonic Sewing Machine Advantage:

1.Efficiency in Production:

The high-frequency operation accelerates the production process, increasing efficiency without compromising on the quality and precision required for invisible lingerie.

2.Seamless Integration:

Designed for easy integration into existing production lines, the machine's compact design and compatibility with different setups ensure a smooth transition to advanced ultrasonic technology without disruptions.

3.Enhanced Comfort:

The invisible seams and delicate fabric handling contribute to creating lingerie that feels like a second skin, enhancing overall comfort for the wearer.

4.Precision and Consistency:

The 20kHz ultrasonic frequency ensures precise and consistent bonding, guaranteeing the production of high-quality lingerie with uniform seam strength and durability.

5.Energy Efficiency:

The machine is designed with energy efficiency in mind, minimizing power consumption while maintaining optimal performance, contributing to sustainable and cost-effective production.

6.Versatility in Lingerie Styles:

Customizable settings and high-frequency precision allow for the creation of a wide range of lingerie styles, meeting diverse market demands and trends.

7.Reliability and Durability:

Crafted with high-quality materials, the ultrasonic sewing machine is robust and durable, ensuring a reliable and long-lasting solution for lingerie manufacturing.

8.Market Differentiation:

Utilizing this advanced technology sets your lingerie apart in the market, positioning your brand as an industry leader in crafting high-quality, invisible lingerie.


1.Lingerie Manufacturing:

The primary application is in the production of lingerie, ensuring the creation of seamless and invisible seams for enhanced comfort and aesthetics.

2.Intimate Apparel:

Ideal for crafting various types of intimate apparel, including bras, panties, camisoles, and other delicate lingerie items that require a seamless finish.

3.Fashion Industry:

The technology can extend its application to the broader fashion industry, particularly in clothing items where seamless stitching is a desired feature.

4.Textile and Apparel Manufacturing:

he machine can also find application in general textile and apparel manufacturing processes, enhancing the quality and appearance of seams.

5.Sportswear and Activewear:

Suitable for crafting seamless and comfortable seams in sportswear and activewear, contributing to the overall functionality and aesthetics of these garments.

6.Medical Textiles:

In cases where seamless stitching is critical, such as in the production of medical textiles like compression garments or post-surgery wear.

7.Uniforms and Workwear:

Applicable to the production of uniforms and workwear, ensuring a professional and polished appearance without compromising on comfort.

8.Automotive Upholstery:

Beyond the fashion and textile industries, the machine can find utility in automotive upholstery, creating seamless and durable seams in the production of interior fabrics.

9.Filtration Products:

In the production of specialized filtration products where precise and seamless seams are required for optimal performance.

Ultrasonic Sewing Machine Reviews:

Customers' evalution as follow:

The ultrasonic Sewing works very well.

The nonwoven fabric is made by cutting with mechanical ultrasonic equipment, wireless sewing, crimping, etc. and there is no crease or ridge.

You have been most kind and helpful. Thank you for your expert communication.

Customers' recognition and trust is our driving force.

Shengpai Technology relies on “Customer Service Being First” as its corporate culture. Aim is ”Quality First, Service First”. Today, because of its abundant professional knowledge and good after-sales service, Shengpai Technology has gained a very good reputation.




1: What is the key advantage of using the 20kHz Ultrasonic Sewing Machine for lingerie production?

The primary advantage lies in its ability to create invisible seams, offering lingerie with a flawless finish and heightened comfort compared to traditional stitching methods.

2: Can the machine handle delicate fabrics commonly used in lingerie manufacturing?

Absolutely. The machine is specifically designed to handle delicate fabrics such as lace and silk, ensuring precise bonding without compromising material integrity.

3: How does the ultrasonic technology eliminate stitch marks and bulky seams?

The ultrasonic waves generate localized heat, melting fabric edges together seamlessly without the need for traditional stitching, resulting in a smooth and invisible finish.

4: Can the settings be customized for different lingerie styles?

Yes, the machine features customizable settings, allowing operators to adjust parameters such as power, amplitude, and duration, providing versatility in creating various lingerie styles.

5: Is the ultrasonic sewing machine suitable for use in high-end and luxury lingerie brands?

Absolutely. Its ability to create invisible seams and offer precise control makes it an ideal choice for brands aiming to deliver premium and flawless lingerie products.

6: How does the machine contribute to increased production efficiency?

The high-frequency operation accelerates the stitching process, resulting in faster production without compromising on the precision and quality required for crafting invisible lingerie.

7: Is the ultrasonic sewing machine user-friendly?

Yes, the machine features an intuitive interface with easy-to-navigate controls and a digital display, minimizing training time and ensuring efficient operation by the production team.

8: Can the machine be seamlessly integrated into existing lingerie production lines?

Absolutely. Its compact design and compatibility with various setups ensure easy integration without disrupting your current workflow.

9: Does the ultrasonic sewing machine consume a lot of energy?

No, the machine is designed with energy efficiency in mind, minimizing power consumption while maintaining optimal performance for sustainable and cost-effective production.

10: Apart from lingerie, can the machine be used in other industries?

While the primary focus is on lingerie, the machine can find applications in the broader fashion industry, medical textiles, sportswear, automotive upholstery, and more, where seamless stitching is desirable.






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