Knowde Enhanced TDS
Identification & Functionality
- Carrier
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- Product Highlights
RA-33W is a second generation water based release agent used in a variety of pressure sensitive adhesive tapes including OPP packaging tapes and polyethylene-backed diaper fastening tapes with adhesives based on SIS block copolymers, SBR and natural rubber. The release is also effective in polyester, vinyl and filament tape constructions. Polypropylene and polyethylene films should be free of any lubricants, or other surface-finishing materials, and must be corona treated to 38 dyne/cm, or higher, to obtain effective release. Coater-ready solutions are easily prepared by mixing RA-33W with water (deionized if the local water supply is too hard) to 1-5% total solids, depending on the adhesive, substrate and coating method, which can be Meyer bar #6-12, rotogravure roll #160-250 and stacked smooth rolls. The following is a recommendation for initial laboratory evaluation: Coat the film placed on a glass plate with a 2% T.S. solution of RA-33W using a #6 Meyer rod and dry horizontally in air oven at 150ºF (70ºC) for 10 minutes or until completely dry. This may be followed by a pilot coater trial or production evaluation. Release properties develop by simply flashing off water in the production oven at 100-250ºF (40-120ºC), depending on web speed, oven length, dry air temperature, dry air velocity and other configurations. No crosslinking occurs on drying but it is important to achieve complete drying. Use the highest possible drying temperature to maximize the running speed. The coating is dry when the film is clear and resists moderate finger rub.
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Adhesive & Sealant Type
- Applications
The release is effective in polyester, vinyl and filament tape constructions. Polypropylene and polyethylene films should be free of any lubricants, or other surface-finishing materials, and must be corona treated to 38 dyne/cm, or higher, to obtain effective release.
Properties
- Appearance
- Clear to slightly hazy, Clear To Slightly Hazy
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Total Solids | 28 | % | - |
| Viscosity | 200 | cps | - |
| pH | 8 | - | - |
Technical Details & Test Data
- Unwind Adhesion Value
UNWIND ADHESIONS (G/5CM) WITH GENERAL PURPOSE OPP PACKAGING TAPE WITH SIS-BASE BLOCK COPOLYMER PSA
LOW SPEED (5 CM/MIN.) HIGH SPEED (91 M/MIN.) GREEN (OFF-SLITTER) EASY 200 100 AGE 150ºF (65ºC) FOR 72 HR MODERATE 450 200 AGE 120ºF (49ºC) AT 90% RH FOR 72HR MODERATE 350 150 SHELF STORAGE 12 MONTHS MODERATE 350 150