Injection Molded Products

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

BVE8049P - Standard Type

Melting Point^*1

190 deg C

Tg^*1

71 deg C

MFR^*2

4.0 g/10min

Note

Standard type, Pellet form

OKS-8074P

Melting Point^*1

185 deg C

Tg^*1

71 deg C

MFR^*2

3.5 g/10min

Note

Flexibility type, Pellet form

OKS-8095P - High Flexibility Type

Melting Point^*1

180 deg C

Tg^*1

71 deg C

MFR^*2

2.0 g/10min

Note

High flexibility type, Pellet form

OKS-8077P - High MFR Type

Melting Point¹

190 deg C

Tg^*1

71 deg C

MFR^*2

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
Shrinking ratio				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
Flexural test	Bending modulus	ISO 178	80 x 10 x 4 mm	Flexural speed 2.0mm/min	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
Izod impact	Notched	ISO 180	64 x 10 x 4 mm	Load 11.8J	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