TF7WHB
DW/H Series | THERMOLAST® K
Applications in the drinking water sector; hose applications
Processing Method:
Injection Molding, Extrusion
Injection Molding, Extrusion
Color / RAL DESIGN:
translucent
translucent
Availability:
Globally
Globally
Manufacturing Site:
Germany
Germany
Typical applications
- Shower hoses
- Hoses for household appliances
- Jet former
- Grip applications
- Soft touch
- Seals, functional and design elements in sanitary sector
Material features
- Low kinking tendency
- Optimized mechanical properties
- Adhesion to PP
- Alternative material to PVC-P
- Surface with low sensitivity to dirt
- Plasticizer free
- Resistance to microbes
- Precoloration in all colors
Regulations / Approvals
- Regulation (EU) No 10/2011
- DVGW Arbeitsblatt W270
- KTW
- ACS (DGS/VS4 n° 200/232)
- WRAS: BS6920-1:2000 and/or 2014 cold water (23 °C)
- WRAS: BS6920-1:2000 and/or 2014 warm water (60 °C)
Value | Unit | Standard | |
---|---|---|---|
Hardness | 70 | Shore A | DIN ISO 48-4 |
Density | 0.900 | g/cm3 | DIN EN ISO 1183-1 |
Tensile Strength1 | 16.0 | MPa | DIN 53504/ISO 37 |
Elongation at Break1 | 750 | % | DIN 53504/ISO 37 |
1Deviating from ISO 37 standard test piece S2 is tested with a traverse speed of 200 mm/min.
All values published in this data sheet are rounded average values. |
The expected shelf life of the TPE granules is a minimum of 24 months from the date of delivery, provided that the storage instructions are followed and the product is kept in the unopened original KRAIBURG TPE packaging. Dry conditions at room temperature (below 40 °C/ 104 °F), away from heat sources and direct sunlight, must be maintained for proper storage. Contact with nitrogen oxides during storage should be avoided. |
For further information and individual custom solutions please contact our customer service. |
Processing Guideline Injection Molding | |
---|---|
Cylinder Temperature | 180 - 190 - 200 °C, max. 235 °C (360 - 370 - 390 °F, max. 445 °F) |
Hotrunner | Hot runner temperatures: 200 - 235 °C (390 - 455 °F). The runner should be empty after a maximum of 2 - 3 shots. |
Injection Pressure | 200 - 1000 bar (2900 - 14504 psi) (depending on the size and weight of the part). |
Injection Rate | In general, the fill time should not be more than 1–2 seconds. |
Hold Pressure | We recommend to derive the optimum hold pressure from determining the solidification point, starting with 40 % - 60 % of the required injection pressure. |
Back Pressure | 20 - 100 bar; if color batches are used, higher back pressure is necessary. |
Screw Retraction | If an open nozzle is used processing with screw retraction is advisable. |
Mold Temperature | 25 - 40 °C (77 - 104 °F) The use of mold release agents can have an influence on the microbiological resistance. |
Predrying | Due to better processing behavior pre-drying is recommended. Drying conditions: 60°C-80°C for 2-4 hrs. |
Needle Valve | With materials < 50 Shore A the use of a needle valve is advisable. |
Screw Geometry | Standard 3-zone polyolefine screw. |
Residence Time | The residence time is to be set as short as possible with a maximum of 10 minutes. |
Cleaning Recommendation | For cleaning and purging of the machine it is appropriate to use polypropylene or polyethylene. Machine must be PVC-free. |
Processing Guideline Extrusion | |
---|---|
Cylinder Temperature | 160 - 180 - 200 °C; max. 235 °C (320 - 360 - 390 °F; max. 455 °F). |
Screw Geometry | Standard three-zone screw (e.g. polyolefin screw). The screw must be able to provide sufficient shearing. |
L/D Ratio | At least 25 |
Compression Ratio | At least 3.5 : 1 |
Screens / Breaker Plate | A breaker plate and a screen pack are generally recommended in the extruder configuration in order to increase pressure. |
Die Land | <= 3 mm ( <= 0,12 in.) |
Extruder Head | Ca. 200 °C (390 °F) |
Die Temperature | Ca. 200 - 230 °C (390 - 450 °F) |
Predrying | Pre drying of the material is not necessary; if surface moisture forms as a result of changes in temperature, the material should be dried for 2 - 4 hours at 60 - 80 °C (140 - 175 °F). |
Calibration | Generally not necessary; support elements may be required when extruding THERMOLAST® compounds with high hardness or when coextruding with standard thermoplastics. |
Cleaning Recommendation | For cleaning and purging of the machine it is appropriate to use polypropylene or polyethylene. Machine must be PVC-free. |
Dry conditions at room temperature (below 40 °C/ 104 °F), away from heat sources and direct sunlight, must be maintained for proper storage. Contact with nitrogen oxides during storage should be avoided.