FV Series

Fluorine-contained rubber roller

Introduction

Compared to conventional inks, soy oil based inks more likely gives harmful effects to rubber rollers such as hardness increase, rubber shrinkage and so on. As a result, operator would have to adjust the nip-width often and the lifetime of the rubber roller would also become shorter.
SIGMA SOY overcomes such problems so that operators can comfortably handle inking rollers with soy based inks.

Features of FV series

Excellent heat resistance ( Continuous use 250℃・Max temperature 300℃ )
Excellent high temperature oil resistance
Excellent chemical resistance
Excellent solvent resistance
Excellent abrasion resistance

* Hardness 60・70・80・90 (Shore A)
* Color:Black

Rubber property before and after aging by heat(Comparison with representative rubber hardness)

Measurement condition	Measurement item	FV70	White 970	FV80	White 980
Initial rubber characteristics	Hardness Shore A	72	67	81	79
	Tensile strength Kg/cm²	145	68	145	56
	Tearing strength Kg/cm	31	15	31	15
	Stretching %	300	310	200	200
Characteristics after aged by heat	Hardness change Shore A	0	+ 2	+ 1	+ 1
	Rate of change of Tensile strength %	- 1	- 6	+ 4	+39
	Rate of change of tearing strength %	- 3	-47	- 6	-27
	Rate of change of stretching %	-10	-55	-15	-60

Above data is a representative data, not a standard data.
The comparison materials, White 970 and White 980, are Silicone rubbers.
Heat aging condition: 250 degrees C. x 72 hours
FV70 and FV80 are post cured.

Comparison of Abrasion resistance

Rubber type	FV70	White 970	FV80	White 980
Initial stage	0.01	0.64	0.02	0.69
After heat aging 200 C x 72h	0.02	0.49	0.02	0.57
After heat aging 200 C x 72h	0.05	0.52	0.01	0.50

Above data is a representative data, not a standard data.
FV70 and FV80 are post cured.

Comparison of high-temperature oil resistance

Rubber type		FV70	White 970	FV80	White 980
Change in hardness	After immersion	0	- 9	0	-14
Weight change rate	After immersion	0.0 %	15.6 %	0.0 %	12.6 %
Change in adhesion properties against metal	Before immersion	Excellent	Good	Excellent	Good
Change in adhesion properties against metal	After immersion	Excellent	Failed	Excellent	Failed

Test method: We immersed 5 grams of rubber block into SG grade engine oil at 170 degrees Celsius for 72 hours. The weight change rate was checked every certain period.
The rate after immersion is a comparison with the rate of “Before immersion”.
FV70 and FV80 are post cured.

PRODUCTS

Katsura Roller Mfg. Co., Ltd.

5-3-13 Nakagawa Ikuno-ku
Osaka 544-0005 Japan
TEL +81-6-6751-1121
FAX +81-6-6754-4400