Product Details
Advantages of Ultrasonic Welding Process
Compared to traditional needle and thread sewing or adhesive bonding, ultrasonic welding generates heat through mechanical vibration, causing the non-woven fabric contact surface to instantly melt and solidify, forming a tightly bonded seam. This process has no pinholes or glue marks, avoiding the problems of disconnection and leakage that may occur with traditional processes. It also has high processing efficiency (can weld several meters per second) and is suitable for mass production.
Sturdy and lightweight structure
The strength of the welded joint is usually higher than the tear strength of the non-woven fabric itself (depending on the material and welding parameters), and it is less likely to break due to pulling; At the same time, there is no need for additional needles or adhesives, which does not increase the weight of the product and maintains the lightweight characteristics of non-woven fabric.
Strong adaptability
It can be adapted to various non-woven fabric materials (such as PP spunbond non-woven fabric, PET non-woven fabric, SMS composite non-woven fabric, etc.), and can also be used for composite connection between non-woven fabric and other materials (such as film, webbing); The welding width and length can be flexibly adjusted to meet the fixed or connection needs of different scenarios (such as bag mouth reinforcement tape, handle tape, sealing edge tape, etc.).
Environmental Protection and Cleanliness
No adhesive residue, no chemical pollution, suitable for scenarios with high cleanliness requirements such as medical and food packaging; The welding process generates no waste and meets environmental production standards.
Product Parameters
● Basic model: 30-60g/㎡ (suitable for lightweight connections, such as shopping bag handles);
Thickened version: 60-120g/㎡ (suitable for load-bearing scenarios, such as heavy-duty packaging bag seams).
● Bandwidth:
● Common width: 5mm-50mm, can be customized according to needs;
-Narrowband (5-15mm): commonly used for edge reinforcement, thin strip connection (such as mask ear bands, small bag sealing);
-Broadband (20-50mm): commonly used for handles and load-bearing seams (such as non-woven bag handle straps, large storage bag side straps).
● Length: It can be cut to a fixed length according to needs (such as handle straps ranging from 10cm-100cm).
-Ultrasonic frequency: 15kHz-40kHz (commonly 20kHz, suitable for most non-woven fabric thicknesses);
-Welding pressure: 0.2-0.8MPa (the thicker the material, the greater the pressure);
-Welding speed: 5-30m/min (speed is positively correlated with bandwidth and material thickness).
Joint strength: transverse tensile strength ≥ 10N/25mm (30-60g/㎡ substrate); ≥ 15N/25mm (60-120g/㎡ substrate);
(Test standard: ASTM D882, which refers to the force value at fracture when stretched vertically along the joint).
● Appearance characteristics: The welding surface is flat, without obvious protrusions or burrs; The color is consistent with the substrate (colored tape can be made by dyeing non-woven fabric); The surface can be pressed with patterns (such as stripes, dots, to enhance friction or decoration).
FAQ
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