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A:Pressure sensitive hot melt adhesive (PSA hot melt) is a type of hot melt adhesive that creates an instant bond under light pressure. It does not require additional heat or solvents and offers good tack, peel strength, and long-term adhesion.

A: PSA hot melt adhesives are used in various industries such as labeling, packaging, tapes, hygiene products, automotive, and electronics. They provide reliable adhesion, easy application, and excellent performance across different substrates.

A: The main difference is that PSA hot melt adhesives bond immediately under pressure without additional heat, making them ideal for tapes, labels, and instant bonding applications. Regular hot melt adhesives require heating and cooling, suitable for assembly, packaging, and structural bonding where longer setting times are acceptable.

A: The most common types of PSA hot melt adhesives are acrylic-based, rubber-based, and EVA-based. Each type offers unique performance: acrylic for durability and UV resistance, rubber for strong initial tack and fast bonding, and EVA for flexibility and general-purpose applications, allowing customers to select the right adhesive for their specific needs.

A: We test tack (initial adhesion) by applying the adhesive to standard substrates and measuring the immediate bonding strength under light pressure. Holding power is evaluated by applying a constant load to the bonded materials over a period of time. These tests ensure our adhesives meet customer performance requirements consistently.

A: The softening point of PSA hot melt adhesives varies by type and formulation.  Rubber-based adhesives are lower. Typical softening points range from 70°C to 120°C.

A: The open time of PSA hot melt adhesives typically ranges from a few seconds to several minutes, depending on the formulation and application conditions.

A: PSA hot melt adhesives can generally withstand temperatures from -20°C to 80°C, depending on the formulation. This ensures reliable performance in applications such as packaging, labeling, tapes, and automotive or electronic components under varying temperature conditions.

A: Our PSA hot melt adhesives are eco-friendly and solvent-free. They meet international environmental standards such as ROHS and REACH, ensuring safety for both users and the environment.

A: PSA hot melt adhesives are generally water-resistant, but the level of waterproofing depends on the formulation.