PSAs & Sealants

What Is a Pressure Sensitive Adhesive?

A PSA is an adhesive that forms a bond under light pressure without requiring heat, water, or solvents. This makes these materials easy to apply and remove cleanly, making them popular in applications like tapes, labels, and medical dressings. They come in both tape and liquid forms.

What Are the Benefits of Pressure Sensitive Adhesives?

PSAs offer easy, immediate bonding, as they don’t require excessive time, a heat gun, or water to seal. This minimizes human error-related risks or production complications.

Another advantage of PSAs is that they’re versatile, thanks to their relative simplicity and ability to bond without additional materials. You can also typically remove them cleanly, making PSAs a great choice for non-permanent sealing applications

What Applications Are Pressure Sensitive Adhesives Used In?

PSAs are ideal for applications requiring fast bonding and ease of use. Common use cases include:

• Gasket Attachment: PSAs are used to secure gaskets in place during assembly and operation. This ensures a reliable seal and prevents the gasket from shifting or dislodging.
• Sealing Tapes: PSAs are applied to sealing tapes used for creating airtight or watertight seals in various applications, such as HVAC systems, automotive components, and industrial equipment.
• Foam Seals: Foam gaskets and seals often use PSAs to adhere to surfaces, providing cushioning, sealing, and insulation in automotive, electronics, and construction applications.
• Bonding Seals to Irregular Surfaces: PSAs are useful for bonding seals and gaskets to surfaces that may be difficult to adhere to with traditional adhesives, such as textured or curved surfaces.
• Temporary Seals: In situations where a temporary seal is required, such as during maintenance or testing, PSAs provide an easy-to-apply and remove solution.
• Custom Die-Cut Gaskets: PSAs are used in the manufacturing of custom die-cut gaskets, where the adhesive is applied to one side of the gasket material to facilitate easy installation.
• Maintenance and Repair Kits: PSAs are included in repair kits for quick fixes and replacements, ensuring that gaskets and seals can be applied efficiently in the field.

How Are Pressure Sensitive Adhesives Made?

PSAs are typically made by blending polymers, tackifiers, and other additives to achieve the desired adhesive properties. The mixture is then coated onto a backing material and dried to form a tacky layer that adheres upon application of pressure.