Moulding Materials 2017-08-25T12:10:42+00:00
EC Electronics

Moulding Materials

Henkel Macromelt® Low Pressure Moulding Materials

EC Moulding services have based our processes around Henkel Corporation’s brand of thermoplastic hotmelt adhesives called Macromelt® or more recently called Technomelt®. There are a number of material suppliers that offer comparable alternatives but at EC we have chosen to work closely with the compounds from Henkel Corporation as they offer superior sealing and environmental specifications.

Macromelt thermoplastic hotmelt adhesives are based on natural fatty acids, they show good adhesion to plastics like PA6.6, ABS and PVC have low temperature flexibility and a wide service temperature range and offer superior moulding properties.

Please call us with any questions.

Macromelt/Technomelt® Material Data Sheet

Material Test OM 652 OM 6208 OM 633 OM 641 OM 673
Properties Method OM 657 OM 6208S OM 638 OM 646 OM 678
Color  amber/black  amber/black  amber/black  amber/black  amber/black
Physical
Specific gravity, S.G.  0.98  0.98  0.98  0.98  0.98
Service Temperature, °C  -40 to +100  -40 to +100  -40 to +130  -40 to +130  -40 to +140
Viscosity @ +210C ( mPa.s )  4000  3000  3500  7000  3000
Hardness @ 25°C, shore A ISO 868/15S  77  78  90  92  88
Hardness @ 125°C, shore A ISO 868/15S  N/A  N/A  65  63  63
Softening point, ball & ring, °C ASTM E28 155  +155  +175  +175  +185
Cold Flexibility °C ASTM D3111  -45  -42  -36  -35  -50
Moulding temperature, °C  180 to 230  190 to 230  200 to 240  210 to 240  210 to 240
Viscosity @ 210° C, mPas ASTM D3236  4100  3600  3700  7000  3400
Electrical
Dielectric constant @ 1kHz  6.2 / 6.3  6.1 / 6.3  4.5 / 4.7  5.1 / 5.5  4.9 / 4.9
Volume resistivity, Ohm cm  1.9×10¹²  1.9×10¹²  1.9×10¹²  1.9×10¹²  1.9×10¹²
Dielectric strength, kV / mm  >20kV/mm  >20kV/mm  >20kV/mm  >20kV/mm  >20kV/mm
Flammability rating UL94 File E182771 V-0  V-0  V-0  V-0  V-0
Special Properties  Good cold flexibility  RTI value for 6208S 95C
Adhesion Properties
Substrate Type
PA6.6 Good Good Moderate Moderate Moderate
PVC Good Good Good Excellent Good
ABS Good Good Moderate Moderate Moderate

Characteristics of Macromelt®

Each grade of material is available in the amber based version and in black and some custom to order colours are available – contact us.

The softer materials generally offer the best adhesive properties.

Moisture and solvent resistance requirements will be key factors in selecting a specific grade of material. Most Macromelt moulding materials do NOT have good resistance to solvents in combination with mechanical stress.

These molding compounds shrink approximately 1.5% after molding.

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