Applications of Consumer daily life with food contact requirements; adhesion to polar thermoplastics, e.g. PC, ABS and PETG
Processing Method:
Injection Molding, Extrusion
Injection Molding, Extrusion
Color / RAL DESIGN:
natural
natural
Availability:
Globally
Globally
Manufacturing Site :
Germany, Malaysia, United States
Germany, Malaysia, United States
Typical applications
- Seals
- Function and design elements
- Grip applications
- Household articles
- Razors
- Toys
- Packaging (for food and care products)
- Toothbrushes
Material advantages
- Adhesion to PC, ABS, PC/ABS, ASA, SAN
- Adhesion to PET and PETG
- Soft, velvety feel
- Halogen-free (according to IEC 61249-2-21)
- Colorable
- In-process recycling possible
- Soft touch surface
- Optimized flow properties
- ISCC PLUS ready (mass balance approach)
Regulations / Approvals
- Regulation (EU) No 10/2011
- US FDA CFR 21 (raw material conformity)
- EN71-3
- UL 94 HB
| Value | Unit | Standard | |
|---|---|---|---|
| Hardness | 60 | Shore A | DIN ISO 48-4 |
| Density | 1.100 | g/cm3 | DIN EN ISO 1183-1 |
| Tensile Strength1 | 4.5 | MPa | DIN 53504/ISO 37 |
| Elongation at Break1 | 600 | % | DIN 53504/ISO 37 |
| Tear Resistance | 16.5 | N/mm | ISO 34-1 Method B (b) (Graves) |
| Adhesion to ABS2 | 4.7 (B) | N/mm | VDI 2019 two-component injection molding |
| Adhesion to PC2 | 3.5 (A/B) | N/mm | VDI 2019 two-component injection molding |
1Deviating from ISO 37 standard test piece S2 is tested with a traverse speed of 200 mm/min.
2The adhesion quality depends on mold design, product geometry and process parameters.
2The adhesion quality depends on mold design, product geometry and process parameters.
| All values published in this data sheet are rounded average values. |
| The shelf life of the TPE granules is 24 months from delivery if storage instructions are observed and the product is stored in the unopened original KRAIBURG TPE packaging. Store in dry conditions at room temperature (below 40 °C) away from heat sources and direct sunlight! Contact with nitrogen oxides must be avoided during storage! |
| For further information and individual custom solutions please contact our customer service. |
| Processing Guideline Injection Molding | |
|---|---|
| Cylinder Temperature | 180 - 210 - 240 °C, max. 250 °C (360 - 410 - 460 °F, max. 480 °F) |
| Hotrunner | Hot runner temperatures: 200 -250 °C (390 - 480 °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 | The mold temperature depends on the hard component. A temperature exceeding 80 °C (175 °F) should be avoided. The common temperature is 40 - 60 °C (105 - 140° F). |
| Predrying | To achieve optimum mechanical values, drying the material for 2 - 4 hours at 60 - 80 °C (140 - 175 °F) is recommended. |
| 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. 250 °C (320 - 360 - 390 °F; max. 480 °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). To avoid porosity in the profile a pre drying is recommended for wall thickness > 3mm. |
| 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. |