hot melt coating technology
DESCRIPTION
Hot melt coating technology, technique, and more. For further informative articles visit www.slotdies.com and click on technical content. To receive the most recent articles and blog posts in your inbox please subscribe to our e-mail list.TRANSCRIPT
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HOT MELT COATING TECHNOLOGY
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BACKGROUND
• Hot Melt Adhesives• Process Techniques• Equipment Systems
• Consistent• Streak-free• High Speed
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HOT MELT ADHESIVES
• Polymeric Materials• Elevated Temperatures• Bond to Substrate• PSA
o gels
• versus Solvent
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HOT MELT PROCESS
• Adhesive Mixing/Mastication• Melting/Pumping• Coating Head• Curing• Web Handling & Controls
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LIMITATIONS
• Speed3280 feet/min (1000 meters/min)
• Thin0.5 mil (0.0127 mm)
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TECHNOLOGY AND TECHNIQUE
• Hot Melt Adhesive Rheology• Technology
o Coating Heado Backing Rollo Adhesive Delivery Systemo Substrateo System Control
• Technique
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HISTORY
• from Compliant Rubber Roll • to Chrome Roll
o Relationship between die and rollo Thinner coatings & gels
• to Rubber Roll
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TECHNOLOGY AND TECHNIQUE
• Rubber Roll Technologyo TIR < 0.0003 inch (0.00762 mm)o Cylindricity < 0.0005 inch (0.0127 mm)o “Compliant Steel”o 80-90 Shore A Durometer
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Rubber Roll Technology
TECHNOLOGY AND TECHNIQUE
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TECHNOLOGY AND TECHNIQUE
• Rotary Rod Die Technologyo Gel passage through physicso Roll deflection up to 1 mil (0.0254 mm)o Slip creates streak-free coating
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TECHNOLOGY AND TECHNIQUE
• Adhesive Delivery Systemo Constant, pulse-free deliveryo Stable temperature
• Web Control Systemo Tensiono Process Speedso Chatter control
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CONCLUSION• Best Techniques
+• Good Technology
=• Best Product
Thinner, Faster, and the State of the Art
• Rotary Rod Die and Rubber Backing Rollo Precision of manufacturingo Adhesive Memory
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