How does Ultrasonic Nonwoven Bonding work

The ultrasonic bonding system for nonwoven resources consists of an imprinted anvil drum and an ultrasonic arrangement with sound stack such as converter, amplitude coupler etc. The acoustic stack is mounted on top of the revolving anvil drum parting a small gap among the surface of the rotating anvil and the sonotrode. The sonotrode continually gets bigger and contracts 20,000 times per second. As web goes by through the gap, force and amplitude are applied to the material. During the expansion cycle, enough compression is functional through the material in opposition to the raised bonding points of the anvil drum generating surface abrasion to melt the nonwoven materials. For the duration of the contraction cycle, the gap is increased permitting the material to move through the gap without any jams. Ultrasonic bonded fabric strength is controlled by constant web speed, constant amplitude and consistent force applied to a specific anvil drum pattern.

Advantages and benefits of the nonwoven bonding process

• Consistent material characteristics; bonding and cutting with ultrasonic get rid of thermal deformation of the nonwoven material and keep up softness, attic and air permeability of the material
• Ultrasonic laminating permit for the bonding of webs with diverse melting points
• Ultrasonic bonding creates environmentally friendly laminates. This laminates do not hold any adhesives or other consumables.
• Consistent weld excellence even when laminating manifold layers of different materials or when bonding occasionally in cross machine direction
• The ultrasonic nonwoven bonding technique put forward instant system accessibility without heat-up time, fast set-up and reduced energy utilization
• Most important cost savings as a result of reduce waste after machine starts up and shuts down

Characteristics of Spunbond fabrics are:

The desired characteristics of Spunbond nonwoven fabrics are:

• Burst strengths,
• Elongation-to-break,
• Porosity and
• Stability to heat and chemicals
• Tear,
• Tensile,
• Thickness,
• Gram per square meter (GSM) range from 10 to 150. 

Application of thermal bonded nonwoven fabrics:

• Sanitary and Hygiene:
• Sanitary napkins,
• Baby diapers and
• Incontinence diapers

• Medical and Surgical:
• Gowns,
• Face masks,
• Caps,
• Drapes, etc

• Other Miscellaneous Applications:
• Filtration Material,
• Agriculture,
• Headliners, etc