Description
Maleic anhydride grafted polypropylene tie resin used in extrusion coating and extrusion lamination technologies. It has been designed to develop adhesion in these processes onto substrates like aluminium foil, paper or PP films and in coextrusion with resins like PP and PA. OREVAC® 18751 exhibits excellent processing properties, particularly regarding drawability, neck-in and melt stability. In addition to adhesive properties, OREVAC® 18751 allows to design aluminium lids for PP or PP coated cups and containers with controlled opening forces.
Processing
OREVAC® 18751 is not corrosive and is readily processed with standard polyolefin equipment.
Conditions typically used in extrusion of polypropylene resins are suitable.
Typical extrusion temperature settings could be:
Zone 1 : 200-220°C
Zone 2 : 220-250°C
Zone 3 : 250-275°C
Zone 4 : 275°C
Fittings-Channels : 275°C
Die : 275°C
Final profile and settings will depend on the line and the multi-layer structure being run.
Although it is not necessary for short runs, it is recommended to dry OREVAC® 18751 pellets
prior to extrusion in order to reduce die build-up during long runs. Typical drying conditions
would be from 2 to 4 hours at 80-90°C under dry air
Storage, Handling & Safety
OREVAC® 18751 should be stored in dry conditions protected from UV-light. Improper storage conditions may cause degradation and have consequences on physical properties of the
product.
Safety data sheet as well as information on handling and storage of the OREVAC® 18751 is available upon request to your SK Functional Polymer representative.
Shelf Life
Three years from the date of delivery, in unopened packaging. For any use above this limit, please refer to our technical services.