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Do You Know The Hot Melt Glue Formula?

Published by JCT 2025-12-02

Hot melt glue is a solvent-free thermoplastic adhesive that can be repeatedly melted and bonded by heating to melt and cooling to solidify.

Component Function Example
Resin (main polymer) Provides adhesion and mechanical properties EVA, SBC (SIS, SBS), TPR, Polyamide (PA), Polyolefin (PO), Polyurethane (PU)
Tackifier Improves initial tack and bond strength Rosin resin, Terpene resin, C5/C9 petroleum resin, Hydrogenated petroleum resin
Wax Controls melt viscosity, adjusts open time and curing speed Microcrystalline wax, Polyethylene wax, Synthetic wax, Fischer-tropsch wax
Antioxidant Prevents heat aging and yellowing 1010,168, 1076, etc.
Filler (optional) Reduces costs or adjusts viscosity Talc, Calcium carbonate, Silica

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Typical Applications of Hot Melt Glue

Application scenatio Typical substrate Formula Type
Carton sealing and packaging Paper, paperboard EVA/PO hot melt glue
Labels and self-adhesive labels Paper, PET, PE SIS/SBS pressure sensitive adhesive
Furniture edge sealing Wood, PVC PUR hot melt glue
Electronic component packaging Metal, plastic PA hot melt glue
Hygiene products Non-woven fabric, PE film SIS hot melt pressure sensitive adhesive

 

Key Principle of Formula Design

  1. Select the main resin based on the application
  2. Adjust initial tack using tackifying resins
  3. Adjust open time and flowability using waxes
  4. Control oxidative stability → add antioxidant systems
  5. Add fillers if necessary to balance cost and rheological properties

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Understand the formula and principle of hot melt glue, and master the formula ratios adn applications of different hot melt glue systems such as EVA, PO, SBC and PUR. From packaging and labeling to electronic encapsulation and woodworking furniture, JCT provide you with complete hot melt glue production line turnkey project — convering formula, equipment, and process guidance — to help you creat high-quality, high-efficiency hot melt glue products.

If you are interested in our hot melt glue production line turnkey project, feel free to chat with us: +86-181 3837 3963 (Whatsapp, Wechat) or jctmixing@outlook.com.

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