Medical and pharmaceutical applications; adhesion to Polyamides

Processing Method: Injection Molding
Color / RAL DESIGN: natural

Typical applications

  • Grip applications
  • Soft touch for grips, switches and mats
  • Seals
  • Seals for plugs
  • Soft touch
  • Flexible Connections

 

Material advantages

  • Colorable, also in effect colors
  • Sterilizable (ß-/y-radiation 2x35 kGy, EtO)
  • KRAIBURG TPE Medical Service Package
  • Adhesion to PA6 and PA12

 

Regulations / Approvals

  • Regulation (EU) No 10/2011
  • US FDA CFR 21 (raw material conformity)
  • VDI 2017
  • ISO 10993-5 (Cytotoxicity)
  • ISO 10993-10 (Intracutaneous irritation)

 

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EMEA (English) PDF fileSafety Data Sheet
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PDF file TM7APO-ISO10993-4
PDF file TM7APO-ISO10993-5
PDF file TM7APO-ISO10993-10
PDF file TM7APO-ISO10993-11
Value Unit Standard
Hardness 70 Shore A DIN ISO 48-4
Density 1.010 g/cm3 DIN EN ISO 1183-1
Tensile Strength1 8.5 MPa DIN 53504/ISO 37
Elongation at Break1 460 % DIN 53504/ISO 37
Tear Resistance 20.0 N/mm ISO 34-1 Methode B (b) (Graves)
Adhesion to PA 62 4.5 (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.
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 (15–30 °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 - 190 - 200 °C, max. 220 °C (360 - 370 - 390 °F, max. 425 °F)
Hotrunner Hot runner temperatures: 180 - 220 °C (356 - 428 °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 The material is hygroscopic, residual moisture content might lead to processing problems and a reduction in the quality of the finished part. The use of a desiccant dehumidifying dryer is recommended. Drying conditions: 80 °C for 4-6 hrs; maximum dew point of the inlet air: -25 °C. The maximum residual moisture of the material should not exceed 0,02 %.
Needle Valve The use of a needle valve nozzle 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.
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 (15–30 °C) away from heat sources and direct sunlight! Contact with nitrogen oxides must be avoided during storage!