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Allegro® Elastic Attachment Nozzles
Patented Allegro nozzles use a novel air-assisted contact coating technology to apply hot melt adhesives to single or multiple elastic strands in nonwoven disposable hygiene article manufacturing.
Overview
This advanced nozzle technology delivers precise adhesive deposition with exceptionally-low variability for elasticized legs, leg cuffs and waist bands on baby diapers, training paints and adult incontinence products.
Integral strand guides stabilize elastic strand positioning while post adhesive-application process air forms molten adhesive around the entire elastic strand.
Specifications
| Specifications1 | |
|---|---|
| Module Compatibility | All Universal™ modules |
| Materials of Construction | All-steel construction with proprietary coating |
| Nozzle Orifice Sizes | 0.51 mm (0.020 in.) |
| Nozzle to Substrate Distance | Contact |
| Adhesive Flow | 2.5 to 25 grams per minute per orifice |
| Add-on Weight | 25 to 100 milligrams/strand/meter |
| Production Speed Capability | 100 to 650 m/min (300 to 2,132 ft/min) |
| Adhesive Viscosity | 4,500 to 8,000 centipoise |
| Operating Temperature | 70° to 205° C (160° to 400° F) |
| Air Consumption | 0.08 scfm per strand |
| Air Pressure2 | 0.3 to 0.7 bar (4.4 to 10.3 psi) |
| Working Hydraulic Pressure | 6.8 to 40.1 bar (100 to 600 psi) |
| Maximum Hydraulic Pressure | 89.6 bar (1300 psi) |
1 Values are typical and may vary based on specific adhesive and application
2 Process air (pressure regulation supplied by customer)
Features and Benefits
- Facilitate increased production speeds, up to 650 m/min.
- Support close centers, as near at 2 mm centerlines.
- Improve creep resistance.
- Offer durability for easier maintenance and inspection.
- Stabilize elastic strand position with integral guides.
