Injection moulding                                        

Extrusion

Coinjection moulding

---

Injection moulding

Machine specifications:

Standard injection moulding machine
Compression ratio: at least 2:1
L/D ratio: at least 20

Guideline processing parameters:

Melt temperature: 180 - 220° C (355 - 425°F);
max. 250° C (480°F)
Mould temperature: 25 - 40° C (75 - 105° F)
Injection rate: high
Hold pressure: if possible, none

Moulds:

Balanced gate system:
Gate point: Diameter 0,4 to 0,6 mm (0,016-0,024 in.), max. 1,0 mm (0,039 in.)
Gate types: Pin gate, submarine gate, film gate
Venting: 0,01 - 0,02 mm (0,0004-0,001 in.) vent channels
Mould surface: eroded
Ejectors: large-area ejectors

Please always note:

• Soft materials may be compressed, resulting in overfilling.
• The excellent flow characteristics of THERMOLAST^® K compounds may cause obstruction of vents

and therefore air entrapment.

Comprehensive information are available in  PDF format:

Machine (PDF 30KB)
Processing (PDF 50KB)
Shrinkage (PDF 65KB)
Moulds (PDF 83KB)
Trouble Shooter (PDF 27KB)
Processing Guide
                                                                                                                                                            Δ top

---

Extrusion

Machine specifications:

Universal or polyolefin extruders with 3 screw zones
Compression ratio: min. 3.5 : 1
L/D ratio: min. 25

Guideline processing parameters:

Feedzone: 150-170° C (300-340° F)
Compression zone: 185-200° C (365-390° F)
Metering zone: 185-200° C (365-390° F)
Extruder head: 185-200° C (365-390° F)
Die: 185-210° C (365-410° F)

Dies:
Simple matrix die is sufficient in most cases
Die land: max. 3-4 mm (0,12-0,16 in.)
Die temperature: 185-200° C (365-410° F)

Comprehensive information are available in  PDF format:

Machine (PDF 25)
Processing (PDF 32KB)
Dies (PDF 20KB)
Coextrusion (PDF 16KB)
Trouble Shooter (PDF 20KB)
                                                                                                                                                        Δ top

---

Coinjection moulding

As hard as thermoplastic and as soft as TPE

THERMOLAST^® K adheres outstandingly to diverse thermoplastics and is therefore highly suitable for time and cost-saving coinjection moulding. Our compounds are used in combination with other thermoplastics, particularly for hard-soft joints such as seals, non-slip elements and handles. Plane applications are also implemented, e.g. due to THERMOLAST^® K's pleasantly soft and warm surface characteristics.
New ideas and forms are being added on a daily basis.

The future of innovative and successful products lies in coinjection moulding with THERMOLAST^® K.

Comprehensive information are available in  PDF format:

Adhesion (PDF 52KB)
Machine (PDF 25KB)
Processing (PDF 30KB)
Mould (PDF 16KB)
Trouble Shooter (PDF 32KB)
Shrinkage (PDF 32KB)
Adhesion table(PDF 32KB)
                                                                                                                                                       Δ top     

---