Gel-Tac® 687ND is a water-based microsphere adhesive designed for applications requiring medium tack and clean removability. It delivers reliable bonding with easy, residue-free removal.

Application Method: Extrusion, Meyer Bar, Reverse Roll Coating, Slot-Die

Compatible Substrates & Surfaces: Vinyl

Features: Clean Removability, Medium Tack, Water-based

Technical Data Sheet
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Enhanced TDS

Identification & Functionality

Features & Benefits

Ready-to-Use Product Features
Product Characteristics

For use in applications that require the properties of medium tack and clean removability.

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Product Application

Designed for transfer coating onto vinyl substrates. This product can be coated onto release liner using conventional coating methods such as reverse roll, extrusion (slot die) and Mayer rod. It should be applied at amounts of 11 – 14 lbs. (dry)/3000 sq. ft. (18 – 23 g (dry)/sq. meter) for the purposes of initial evaluation.

Application Instructions: This adhesive may separate over time; this is typical for this type of adhesive. Mix before use; adhesive will readily redisperse with mild agitation. Check pH in open coating pans and adjust to 9.0 – 9.5 with ammonium hydroxide solution, if necessary. If the pH of the adhesive falls below 8.0, coagulation may occur. Air operated diaphragm pumps are recommended to pump the adhesive. Avoid the use of high-speed centrifugal pumps.

Cleaning Instructions: The adhesive will clean up with water and mild soap when wet; dried material may require clean up with a solvent such as acetone or ethyl acetate.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
pH8.5 - 10.0--
Solids Content41 - 43%-
Viscosity (at 21 - 23°C, Sp2, 10rpm)1400 - 2000cPs-
Average Particle Size30.0micron-
Performance Properties
ValueUnitsTest Method / Conditions
Application Temperature40 - 120°C-
Service Temperature40 - 120°C-
Polyken Tack200 - 350g-
90° peel (5 min)400 - 550gdwell, SS

Safety & Health

Safety Advice

Avoid contact with skin and eyes. Personnel should wear gloves and splash goggles when handling material. Product will irritate eyes if contact occurs. Skin irritation is possible on prolonged or repeated contact.

Storage & Handling

Shelf Life
180 days
Storage Information

For best performance, the product should be stored and used at 65 – 85°F. Do not freeze. Keep containers closed to maintain proper pH.