Injection molding with Nichigo G-Polymer™

  • By injection molding with Nichigo G-Polymer™, water soluble cast items can be produced.
  • Nichigo G-Polymer™ can be used for lost-core and outer-core material. Lost-core method is well known as producing curved and/or complicated tube structure plastic and set it melt and dissolve.
  • It is possible to produce lost-core by Nichigo G-Polymer™, using ordinary injection molding and removal of lost-core can be easily done by warm water (cold water). So workers on site and machines are also in good circumstances because of no solvent.
  • Further, it is possible to adjust solubility speed, resin strength, flowability, flexibility and softening temperature by controlling resin properties.

Grades

Recommended Grades

Melting Point1
190 deg C

Tg1
71 deg C

MFR2
4.0 g/10min

Note
Standard type, Pellet form

Melting Point1
185 deg C

Tg1
71 deg C

MFR2
3.5 g/10min

Note
Flexibility type, Pellet form

Melting Point1
180 deg C

Tg1
71 deg C

MFR2
2.0 g/10min

Note
High flexibility type, Pellet form

Melting Point1
190 deg C

Tg1
71 deg C

MFR2
30 g/10min

Note
High MFR type, Pellet form

The numbers above are sample values, not guaranteed values.

*1: Measured with DSC, both heating and cooling speeds of 10 deg C/min
*2: Measured with Melt Indexer (210 deg C, 2160g)

Lost Core and Outer Core Molding (Water Soluble)

Lost core and outer core made by Nichigo G-Polymer™ enable to produce one component product with complicated inside structure which needed to construct many parts.

Mechanical Properties of Nichigo G-Polymer™

Properties Test Method Test Piece TestCondition Unit Value
MFR ISO 1133 200-230°C g/10min 3-12
Shrinking ratio TD30-80°C % 0.045-0.310
MD30-80°C % 0.057-0.321
Tensile test Breaking point ISO 527 Type A 200 x 10 x 4mm Dumbbell Tensile speed 10mm/min % 2.5
Breaking stress N/mm2 88
Tensile modulus N/mm2 3,990
Flexural test Bending strength ISO 178 80 x 10 x 4 mm Flexural speed 2.0mm/min Mpa 191
Bending modulus Mpa 7,150
Compression test Compression strength ISO 604 50 x 10 x 4 mm Compression speed 1mm/min Mpa 5,180
Izod impact Not notched ISO 180 64 x 10 x 4 mm Load 11.8J kJ/m2 18.3
Notched kJ/m2 2.7
Hardness Rockwell hardness ISO 2039-2 40 x 40 x 6 mm Iron ball 6.35mm D Load 980.0N HRM 112

Data for Nichigo G-PolymerTM BVE8049P

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