Description
PRINTABLE RELEASE COAT FOR DOUBLE CORONA TREATED POLYOLEPHYNIC ADHESIVE TAPES
RELEASE ST1 is an heterogeneous solution of synthetic resins in solvents.
Application
RELEASE ST1 is a compound in solvent solution, designed to replace the normal Release coat (Release PP 25S or RELEASE K100D) in the production of PP adhesive packaging tapes, in order to achieve tapes which will be printable with a single-step printing machine (similar to PVC tapes, without using primer and release) using only suitable inks (see notes below).
Technical Specifications
| Method of analysis | MU | Standard | |
|---|---|---|---|
| 1 | Total Solids | % | 13±1 |
Handling
RELEASE ST1 must be heated and well stirred before use, until it becomes perfectly fluid. Product temperature should never go below 20°C (preferably between 30-40°C).
Suggested dilution: 0.8% of total solids content. Add 1 p/w (part by weight) of RELEASE ST1 with 15 p/w of a blend of toluene and isopropyl alcohol (70 : 30).
Suggested coating weight: 4-6 g (wet)/sqm on flame treated BOPP film (38-42 dynes/cm). That means 0.04 g (dry)/sqm.
Coating must be perfectly dried (less than 0.6% of residual solvents).
Hot-melt or solvent rubber adhesives can be coated directly on line on the other treated side of the BOPP film.
Packaging
The product is supplied in iron drums (45 kg).
Storing
RELEASE ST1 gels at low temperatures and must be kept at 20°C or above.
In case of freezing, good heating and stirring will be necessary. The product must also be stirred every time before removing partial quantities from containers.
Use within 12 months from production date (unopened and in the original packaging).
Notes
Ichemco can supply a wide range of suitable polyamide inks (COLOR INK PP PAM + ADD series - one component inks, ready to use). See our web site (www.ichemco.it/inks) for a full list. The printing machine must use specific settings (we suggest to contact SIAT SPA), e.g. the larger cylinder (opposite to the printing rolls) must be heated at 40-50°C. Before printing, brush off the surface with a felt to activate the surface by friction.
| Mod. DT3002E | Creation date: 11/21/1995 | Revision: 8 | Revision date: 24 Aug 2023 |
Above information is reliable, but does not constitute warranty.
ICHEMCO srl
via 11 Settembre, 5 - 20012 CUGGIONO (MI) - ITALY
Phone: +39 02 97243.1 - Fax: +39 02 97243.200
- internet: www.ichemco.it
via 11 Settembre, 5 - 20012 CUGGIONO (MI) - ITALY
Phone: +39 02 97243.1 - Fax: +39 02 97243.200
- internet: www.ichemco.it
