Pressure Sensitive Hot Melt
Pressure Sensitive Hot Melts (PSA) are unique because they do not solidify to form a solid material, they remain permanently tacky and have the ability to wet-out substrates on contact. Bonds are formed by bringing the PSA adhesive in contact with the substrate and applying pressure. When inadequate pressure is applied or the application temperature is too low, bonding problems such as adhesive creep, bubbles or detachment can occur. PSA’s are not true solids, so the strength of pressure sensitive adhesive decreases when the temperature is increased. Pressure sensitive adhesives also exhibit a tendency to undergo creep when subjected to loads. They are most commonly formulated from natural rubber, synthetic rubbers, and polyacrylates.
Pressure sensitive adhesives can be supplied in many forms such as a water-based or solvent based liquid, a hot melt, or coated on release liner as tape. Liquid applied pressure sensitive adhesives can be applied as a bead or ribbon, sprayed, or roll coated. After PSA is applied, substrates can be bonded or the adhesive covered with release liner for bonding later. The adhesive can be applied in a pattern to provide bonded and unbonded areas.
Our Pressure Sensitive Hot melt Adhesives are used for a wide range of industry applications including:
Our Pressure Sensitve Hot Melt Adhesives Offer the following benefits:
- Aggressive Bonds - Bonds to a wide range of difficult to Bond, Low energy substrates.
- Reduced Char - No clogged lines or nozzles and no adhesive buildup in the tank, reduced maintenance costs.
- Low/No Odor - No smoke, offers a more operator-friendly work environment.
- No Stringing / Tailing - Reduces downtime. No Angel Hairs or adhesive build-up. Reduces unscheduled maintenance.
- Increased Mileage - Lowers adhesive usage and costs, depending on application.
- Reduced viscosity gain - Adhesive runs consistently clean, allowing for precise control of bead size and bead placement.
- Light in color - Improves package appearance.
- Clean Machining - High performance. Reduce equipment maintenance and unscheduled downtime.
Pressure Sensitive Hot Melts:
Below are just a few of our most commonly used Pressure Sensitive hot melts.
We offer PSA hot melts for all substrate types and applications.
Our PSA Hot Melts can be applied by extrusion, roll coater, spray or swirl applied.
For more info, please call one of our Adhesive Specialists at 1-800-249-0337
|
Part # |
Descriptions \ Applications \ Substrates |
Open Time |
Application Temp |
Viscosity at 350°F |
Form |
|
W337 |
General Purpose PSA, Aggressive Tack, Lower Viscosity, Light in Color, for Coated Boards, Foams, Plastics, Polyeth/PolyPro,Metals, Fabrics, non-wovens. |
Unlimited-PSA |
325-375°F |
2000 cps |
Mini Pillows |
|
W938 |
General Purpose PSA, Aggressive Tack, Medium Viscosity, Light in Color, for Coated Boards, Foams, Plastics,
Polyeth/PolyPro, Metals, Fabrics, non-wovens. |
Unlimited-PSA |
325-375°F |
4000 cps |
Mini Pillows |
|
W444 |
General Purpose Product Assembly PSA, Aggressive Tack, High Viscosity, For High Heat & Shear Resistance
applications, for Polyolefin Plastics, Metals, Woods, Fabrics, Papers, Foams. |
Unlimited-PSA |
325-375°F |
9000 cps |
Mini Pillows |
|
W421 |
General Purpose PSA, Medium Tack, Medium Viscosity, Light in Color, for Coated Boards, Foams, Plastics,
Polyeth/PolyPro, Metals, Fabrics, non-wovens. |
Unlimited-PSA |
325-375°F |
6000 cps |
Mini Pillows |
-Hot Melts are packaged in 25lb & 50lb boxes, 1350lbs /pallet.
-Available in pillow or mini-pillow form.
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