Koceran
Durable inorganic fiber sheet with excellent heat and fire resistance
KJ SPECIALTY PAPER's proprietary paper making technologies make alkaline
earth silicate wool (bio soluble ceramic fiber) into heat and fire resistant sheet products.
It can be easily worked with paper cutters despite its strength. In addition,this product
offers excellent solvent and water resistances while being impregnable to inorganic
and organic chemicals.
Features
- Manufactured using RCF-free materials including a bio-soluble ceramic fiber
- Excellent heat and fire resistance up to 700 °C
- Retains sheet strength even after baking
- Thin (150 micron and over), flexible and can be easily cut and folded
- Its high porosity can support catalysts or porous materials and provide excellent impregnation properties for organic and inorganic chemicals.
Heat resistanceComparing with Glass fiber sheet |
Excellent Workability |
Applications
- Heat resistant honeycomb filter for odor/moisture removal etc.
- Heat resistant filter media
- Honeycomb core table for laser cutter, Heat resistant tag
- Heat and flame resistant products such as welding blanket
- Heat resistant structural materials for building, furnace and wall construction
- Carrier for catalysts or porous materials,Base material for high temperature heaters
Application Example |
Physical Properties
General physical Properties
Item | Unit | Measured Value | Test Method |
Basis weight | g/m2 | 70 | JIS P-8124 |
Thickness | ㎜ | 0.17 | JIS P-8118 |
Density | g/cm3 | 0.41 | JIS P-8118 |
Ash content | % | 84 | JIS P-8128 |
Tensile strength | kN/m | 1.8 | JIS P-8113 |
Wet tensile strength | kN/m | 0.4 | JIS P-8135 |
Applicable temperature :Room temp. to 700 °C
Thermal conductivity
Thermal conductivity (W/m・K) |
before baking | 0.17 |
after baking | 0.16 |
Resistivity
Volume resistivity (Ω・cm) |
before baking | 4.4×1011 |
after baking | 6.4×1010 |
Heat release test (Heating time: 20min)
Item | Total heat release [MJ/m2] |
Total time of heat release exceeding 200kW/m2[s] |
Existence of through- crack or hole which can negatively impact fire prevention |
Requirement value as noncombustible material |
8 or less | No more than 10 | None |
Koceran | 0.18 | 0 | None |
Tailor-made inorganic sheet products
(1) About Inorganic fiber
- Inorganic fiber is a fiber made from inorganic material, such as glass fiber, metal fiber, carbon fiber and many others.
- Comparing with organic fiber, generally inorganic fiber has higher resistance against heat, chemical,weather and scratch and it has higher elastic modulus.
- Glass fiber has lower heat resistance among inorganic fiber, but has high mechanical strength and low stretchability.
- Ceramic fiber has higher heat resistance than glass fiber. An example of a ceramic fiber is a man-made vitreous fiber based on alumina and silica, which is called RCF (Refractory Ceramic Fiber).
- Regarding the harmful effect of the inorganic fiber, RCF, next to asbestos, was classified as Group 2B (possibly carcinogenic to humans) by IARC (International Agency for Research on Cancer), and additionally, classified as Class II Specified Chemical Substance in Japan from Nov 2015. Thus the handling of this material should be strictly regulated.
- As an alternative material for RCF, Bio Soluble Fiber (BSF), which was developed in EU in 90’s, was confirmed to have no risk on human body because after taking in BSF is dissolved inside human body and drained.
(2) About Inorganic material sheet
(a) Inorganic fiber sheet (Inorganic fiber paper)
- Sheet made from inorganic fiber such as ceramic fiber and glass fiber.
- For example: Glass fiber sheet (Glass fiber paper), Ceramic fiber sheet (Ceramic fiber paper) and many others.
- Koceran is manufactured using RCF-free materials including a bio-soluble ceramic fiber.
(b) Inorganic material (other than fiber) sheet
- Sheet made from inorganic powder with pulp.
- For example: Aluminum oxide paper, Magnesium silicate paper and so on.
We provide solutions to customers’ problems by utilizing our strengths in sheet making, coating,
impregnating, laminating and dispersion technologies and by using inorganic fiber, organic fiber,
several types of pigment, etc.