Designed for either permanent or removable applications, PSAs are usually based on elastomers compounded with tackifiers. Gain insight into the importance of tackifiers in PSA formulation, including their function and when they are used. This enables them to promote specific adhesion and lower the softening point of the polymer system. While tackifiers are often used in PSA formulation, they are not always required.
For example, acrylic-based PSAs may not contain a tackifier depending on the desired performance properties. However, many rubber-based hot melt PSAs do need a tackifier in order to improve their ability to bond to different substrates. Since there is a wide diversity of elastomers and tackifiers available to the formulator, a basic understanding of tackifier resin selection criteria and familiarity with the various families of tackifiers is critical. You may be trying to access this site from a secured browser on the server.
Please enable scripts and reload this page. Contact Us Customer Center. Transportation Visual Merchandising. Responsible Care Eastman in the Circular Economy. Home Markets Tackifier Center. Tackifier Center Overview. View selection criteria. Learn about Tackifier selection criteria, such as compatibility, color and fluorescence.
Learn about block copolymers. Learn about styrenic block copolymers used in a wide range of hot melt adhesives. Use a soil test to verify the exact type of soil at the site. Applications of liquid mulch binders should be heavier at edges, in valleys, and at crests of banks and other areas where the mulch could be moved by wind or water. All other areas must have a uniform application of the tackifier.
Example properties of soil binders for erosion prevention. Crown or slope the ground while grading to avoid ponding. Follow manufacturer's written recommendations for application rates, pre-wetting of application area if necessary , and cleaning of equipment after use. Prior to application, roughen embankment and fill areas. Also, consider the drying time for the selected soil binder and apply with sufficient time before anticipated rainfall.
Soil binders should not be applied during or immediately before rainfall. Avoid overspray onto roads, sidewalks, drainage channels, sound walls, existing vegetation, etc.
Spraying of hydraulic mulch should not be performed during windy conditions, which would prevent the proper placement. If more than one treatment is necessary, the second treatment may be diluted or have a lower application rate. Generally, soil binders require a minimum curing time of 24 hours before they are fully effective.
Part E. Specification Inspect the area before anticipated storm events or series of storm events such as intermittent showers over one or more days , within 24 hours after the end of a rainfall event of one-half inch or more, and at least once every 14 calendar days. If possible, maintenance needs identified in inspections or by other means must be addressed before the next storm event, but in no case more than 7 days after the need is identified.
If properly applied, little additional maintenance is required during the first weeks. After high winds or significant rainstorms, treated areas should be checked and re-treated if necessary.
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