Hot-Melt PSA Adhesives (where PSA stands for pressure-sensitive adhesives) are made from a blend of thermoplastic resins, activated by heat. They are commonly used in a variety of industrial applications, including packaging, labelling, adhesive tapes, thermal insulation, floorboards, sandwich panels and furniture.
They are characterised by high performance, ease of application and excellent adhesion to a wide variety of surfaces, like metals, plastics, paper, textiles and wood. Hot-melt PSA adhesives are flexible and have good water resistance, making them ideal for products exposed to moisture. In addition, these types of adhesives are more durable than traditional PSA adhesives, allowing strong joints to be formed which resist high mechanical loads.
Acrylic PSA Adhesives are acrylic polymers, dispersed in water or organic solvents. They feature high adhesion to application substrates, even at low pressure. These adhesives are usually clear and can be used to bond a variety of materials such as paper, plastics, fabrics, leather and metals. The adhesives are designed for a wide variety of applications, hence their prevalence in the medical, automotive, construction, electronics and packaging industries. They have the advantage of being resistant to water, temperature and UV radiation, by which they are more durable and ageing-resistant compared to other types of adhesive. They are available in a variety of forms, including adhesive tapes, liquids, foams and spray adhesives. Their adhesive properties can be customised to specific applications through chemical modifications of the acrylic polymers.
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