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US 10,894,737 B2Granted
Apparatus and method for forming melt-formed inorganic fibres
AssigneeThermal Ceramics UK Limited
InventorsMichael Hankinson, Gary Jubb
Life of this patent
Estimating the term…
Abstract
Apparatus and methods for forming melt-formed fibres and melt-formed biosoluble fibers are disclosed. The apparatus comprises a spinning head comprising one or more rotors; a plurality of nozzles or slots disposed around at least part of the one or more rotors; a conveyor; and a barrier between the spinning head and the conveyor.
Claims13
A mass of melt-formed biosoluble fibres having an overall composition in weight percent of:
- SiO2:
- 62-68%;
- CaO:
- 26-32%;
- MgO:
- 3-7%;
- and
- Others:
- less than 1%,
- the melt-formed biosoluble fibres having a length weighted arithmetic mean diameter less than 2 μm and comprising fibres of a length greater than 10 cm, the mass having a shot content of shot having a dimension greater than 45 μm of less than 35 wt %, and capable of being formed by entanglement into a blanket having:
- a density of 128 kg·m−3;
- a thickness of 25 mm;
- and
- a tensile strength greater than 50 kPa from a blanket sample of 230±5 mm×75±2 mm and clamped at each end with an unclamped span of 150±5 mm, wherein the mass of melt-formed biosoluble fibers is a non-deshotted mass of melt-formed biosoluble fibers having a mass of more than 100 grams.
11 more elements
A mass of melt-formed biosoluble fibres having an overall composition in weight percent of:
- SiO2:
- 70-80%;
- CaO+MgO:
- 18-25%;
- and
- Other:
- less than 3%
- the melt-formed biosoluble fibres having a length weighted arithmetic mean diameter less than 2 μm and comprising fibres of a length greater than 10 cm, the mass having a shot content of shot having a dimension greater than 45 μm of less than 35 wt %, and capable of being formed by entanglement into a blanket having:
- a density of 128 kg·m−3;
- a thickness of 25 mm;
- a tensile strength greater than 50 kPa from a blanket sample of 230±5 mm×75±2 mm and clamped at each end with an unclamped span of 150±5 mm;
- and
- having a thermal conductivity at 1000° C. of less than or equal to 0.26 W·m−1·K−1,
- wherein the mass of melt-formed biosoluble fibers is a non-deshotted mass of melt-formed biosoluble fibers having a mass of more than 100 grams.
11 more elements
A mass of melt-formed biosoluble fibres having an overall composition in weight percent of:
- SiO2
- 73-74.5%;
- CaO
- 22.2-26%;
- MgO
- 0.4-0.8%;
- Al2O3
- 0.9-1.4%;
- and
- K2O
- 0.5-0.8%,
- the melt-formed biosoluble fibres having a length weighted arithmetic mean diameter less than 2 μm and comprising fibres of a length greater than 10 cm, the mass having a shot content of shot having a dimension greater than 45 μm of less than 35 wt %, and capable of being formed by entanglement into a blanket having:
- a density of 128 kg·m−3;
- a thickness of 25 mm;
- a tensile strength greater than 50 kPa from a blanket sample of 230±5 mm×75±2 mm and clamped at each end with an unclamped span of 150±5 mm;
- and
- having a thermal conductivity at 1000° C. of less than or equal to 0.26 W·m−1·K−1,
- wherein the mass of melt-formed biosoluble fibers is a non-deshotted mass of melt-formed biosoluble fibers having a mass of more than 100 grams.
15 more elements
Dependencies are inferred from the claim text.