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Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens

Completely Eliminate Adhesives

Directly attach elastic strands to the substrate web and avoid all costly adhesive materials and complex adhesive delivery systems.

Maximize Fabric Softness

Eliminate the stiffening effect of adhesive from the composite, improving fabric drape, bend, crush conformability, and breathability.

Increased Operational Efficiency

When the cost of operating and maintaining the adhesive applicator equipment is eliminated, labor and utility costs will decrease.

Material Cost Savings

Ultrasonic technology provides cost savings by providing the option of purchasing less expensive, lighter weight nonwoven materials and elastics. This is because there is no adhesive bleed-through or loss of elastic performance due to the adhesive.

Improved Product Comfort

Eliminating adhesive allows the finished product to be softer, odor-free, and offer more breathability. It also enables the use of lighter weight fabrics so the final product is thinner and has reduced visibility when wearing.

Improved Elastic Performance

The ultrasonically bonded attachment points reside close to nonattached elastic strands, allowing for near pure performance of the elastic.

Increased Sustainability

Ultrasonic bonding consumes less energy because it replaces hot melt delivery and application systems with a highly efficient ultrasonic energy source. Furthermore, there are fewer toxins in the landfill after the product is used.

Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens
Adhesive-Free Ultrasonic Elastic Attachment for Nonwovens

Overview

The Aurizon® Ultrasonic Sealing technologies provide Adhesive-Free Elastic Attachment which enables hygiene product manufacturers to create softer, thinner, high performing elasticized fabrics. This solution provides precise bonding on waistbands and leg cuffs without the stiffening effect from adhesives, enabling the use of nonwoven fabrics that are thinner and have better absorption. Converters can attach multiple elastic strands using clean ultrasonic energy. Ultrasonic elastic attachment technology eliminates the use of nonwovens adhesive dispensing solutions creates an elasticized fabric with improved drape, bend, crush conformability, breath-ability, and maximum performance.

Ultrasonic bonding has minimal impact on the elastic strand performance. The stretched elastic strands are sandwiched between sheets of nonwoven material in close approximation to an anvil and sonotrode. When in contact with the horn, the anvil creates bond points within the nonwoven material that surrounds the elongated strand. Eventually, the strand is relaxed, causing the elastic to expand and become entrapped between the bond points. As a result, slip or creep (issues common with adhesive application) are eliminated with this technology.

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Key Features

  • Accommodates various elastic panel widths
  • High speed intermittent or continuous processing - up to 825 mpm
  • Robust to web upsets without elastic strand breakage
  • Proprietary anti-snapback device keeps process running smoothly
  • Adaptable to existing process equipment
  • Avoids nonwoven splices, elastic splices and machine stop/start events
  • Anvil geometry offers customized fabric aesthetics
  • Highly efficient, proven, reliable bonding method
  • Increase line run speed and process output without risking quality
  • Components are durable and offer long service life
  • Automatically self threads if strand breakage occurs
  • Highly efficient energy source

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