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Glossary

Hot melt adhesives (in the context of adhesive label printing) are a type of adhesive that is thermally activated and applied in a molten state. These adhesives consist of solid materials that are melted to a liquid state when heated, allowing them to bond to various surfaces upon cooling.

Hot melt adhesives are commonly used in label printing due to their fast-setting and strong bonding properties. They offer advantages such as quick adhesion, high tack, and excellent bond strength. Additionally, hot melt adhesives are often solvent-free, making them environmentally friendly.

There are different types of hot melt adhesives available, each with its specific characteristics and applications:

  • Ethylene Vinyl Acetate (EVA): EVA hot melt adhesives are widely used in label printing. They offer good adhesion to a variety of substrates and have excellent flexibility and low-temperature resistance.
  • Pressure-Sensitive Adhesives (PSA): PSA hot melt adhesives are specifically designed for self-adhesive labels. They offer excellent tack and peel adhesion properties, allowing labels to stick well to various surfaces upon contact.
  • Polyolefin: Polyolefin hot melt adhesives provide good adhesion to a range of substrates, including plastics and paper. They offer high-temperature resistance, making them suitable for labels that will be exposed to heat.
  • Polyester: Polyester-based hot melt adhesives offer exceptional heat resistance and bond strength. They are commonly used in applications that require long-term durability and resistance to harsh environments.
  • Polyamide: Polyamide hot melt adhesives provide excellent heat resistance and bond strength. They are commonly used in applications where high-temperature resistance and long-term durability are required.

These are just a few examples of hot melt adhesive types used in label printing. The choice of adhesive depends on the specific application requirements, such as substrate materials, temperature conditions, and durability needed for the label. It’s important to select the appropriate hot melt adhesive to ensure reliable and long-lasting label adhesion.