Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Polymer Name
- Plastics & Elastomers Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Materials Features
- Product Highlights
The technology specifically consists of the production of multiple overlapping layers of barrier material in the polyethylene matrix during the extrusion process. To achieve this structure, special attention must be given to the screw, barrel, head and mold designs. Also, specific machine temperature settings are required.
Specifically, KORTRAX® is an excellent barrier to most hydrocarbons and the barrier can be achieved in blends with selected grades of HMW HDPE in extrusion blow molding of any size container or bottle. Also, oxygen barrier improvement and water vapor barrier improvement vs. pure HDPE is obtained.
Barrier improvement can also be achieved in pipes, sheets or other extruded shapes. Low or medium density PE can be processed with KORTRAX® mixtures, but the inherent lower barrier performance of these polymers must be accounted for.
In addition, KORTRAX® BR has a UV tracker that under blacklight will demonstrate the presence and dispersion of the barrier additive within the container. This non-destructive quality check gives confidence to both the convertor and the end user as to the presence of KORTRAX® thereby eliminating any doubt.
Applications & Uses
- Markets
- Applications
- Compatible Polymers & Resins
- Plastics & Elastomers End Uses
- Plastics & Elastomers Processing Methods
Properties
- Typical Properties
- Mechanical Properties
All mechanical properties of the HMW HDPE grade used are maintained. The rigidity might increase because of the PA platelets in the matrix.
- Barrier Properties
Depending on the efficiency of KORTRAX® processing, the following barrier improvements can be obtained:
- For polar hydrocarbons: from 60 to 200 times;
- For other solvents and additives: up to 50 times;
- For oxygen: 2 to 5 times;
- For aroma: excellent improvement;
- Amount of KORTRAX® BR mixture to be added: 5 to 9 %.
Example: The weight loss of a one liter standard HDPE bottle can be reduced by a factor of 100 by adding 5% to 9% of KORTRAX® BR when filled with xylene, toluene or similar hydrocarbons.
| Value | Units | Test Method / Conditions | |
| Blend Moisture Content | max. 0.2 | % | ASTM D798 |
| Blend PA Content | 50.0 | % | Flotation |
| PA Melting Point | 222.0 | °C | ISO 11357-1 |
| PA Specific Gravity | 1.14 | — | ISO 1183 |
| Vicat Softening (50N/120°C/h) | 200.0 | °C | ISO 306 |
Regulatory & Compliance
- Certifications & Compliance
Packaging & Availability
- Packaging
KORTRAX® barrier resins are packed in either 55lb, 110lb, 220lb or 300lb moisture proof UN rated fiber drums. The resins are hygroscopic and should be processed within max. 24 hrs after opening the bag provided the conditions of atmospheric relative humidity and temperature is not excessive.