A fiber and a fiber manufacturing method are provided, in which IGCC slag constitute a component of raw materials of the fiber. The fiber can be fabricated stably from the melt of the raw materials by the method in which the raw materials are preheated up to 1300° C. or higher; the raw materials are maintained at the same temperature for certain period of time; subsequently, the temperature of the raw materials are raised further to cause the melted materials are spun into fiber.

A fiber and a fiber manufacturing method are provided, in which IGCC slag constitute a component of raw materials of the fiber. The fiber can be fabricated stably from the melt of the raw materials by the method in which the raw materials are preheated up to 1300° C. or higher; the raw materials are maintained at the same temperature for certain period of time; subsequently, the temperature of the raw materials are raised further to cause the melted materials are spun into fiber.

The invention relates to a method for manufacturing water treated man-made vitreous fibres (MMVF) comprising:

a. providing a mineral melt,

b. providing a fiberizing apparatus,

c. fiberizing the mineral melt to form man-made vitreous fibres (MMVF),

d. collecting the MMVF, and thereafter

e. applying about 0.1 wt % to about 1 wt % water, based on the weight of the MMVF, to the MMVF to form water treated MMVF.

The invention relates to a method for manufacturing water treated man-made vitreous fibres (MMVF) comprising:

a. providing a mineral melt,

b. providing a fiberizing apparatus,

c. fiberizing the mineral melt to form man-made vitreous fibres (MMVF),

d. collecting the MMVF, and thereafter

e. applying about 0.1 wt % to about 1 wt % water, based on the weight of the MMVF, to the MMVF to form water treated MMVF.

A fiber optic imaging element includes medium-expansion and a fabrication method including: (1) matching a core glass rod with a cladding glass tube to perform mono fiber drawing; (2) arranging the mono fibers into a mono fiber bundle rod, and then drawing the mono fiber bundle rod into a multi fiber; (3) arranging the multi fiber into a multi fiber bundle rod, and then drawing the multi fiber bundle rod into a multi-multi fiber; (4) cutting the multi-multi fiber, and then arranging the multi-multi fiber into a fiber assembly buddle, then putting the fiber assembly buddle into a mold of heat press fusion process, and performing the heat press fusion process to prepare a block of the fiber optic imaging element with medium-expansion; and (5) edged rounding, cutting and slicing,

To provide a glass composition for glass fiber having a low dielectric loss tangent, suppressing the occurrence of phase separation, having a reduced viscosity at high temperatures, and reducing the occurrence of striae. The glass composition for glass fiber includes 52.0 to 57.5% by mass of SiO.sub.2, 19.5 to 25.5% by mass of B.sub.2O.sub.3, 8.0 to 13.0% by mass of Al.sub.2O.sub.3, 0 to 2.0% by mass of MgO, 0 to 6.0% by mass of CaO, 0.5 to 6.5% by mass of SrO, and 0.1 to 3.0% by mass of TiO.sub.2, the ratio of Al.sub.2O.sub.3 to B.sub.2O.sub.3 is 0.35 to 0.54, and the content SI of SiO.sub.2, the content B of B.sub.2O.sub.3, the content M of MgO, the content C of CaO, the content SR of SrO, and the content T of TiO.sub.2 satisfy the following formula (1): 6.90≤100×(B/SI).sup.2×{SR/(C+SR)}.sup.2/3×{T/(M+T)}.sup.1/2≤12.30 (1).

Glass fibers formed from the inventive composition may be used in applications that require high stiffness and have a specific modulus between 34 and 40 MJ/kg. Such applications include woven fabrics for use in forming wind turbine blades and aerospace structures.

Glass fibers formed from the inventive composition may be used in applications that require high stiffness and have a specific modulus between 34 and 40 MJ/kg. Such applications include woven fabrics for use in forming wind turbine blades and aerospace structures.

A nozzle tip for producing glass fibers has a pair of long-side walls and a pair of short-side walls, each of the long-side walls and the short-side walls containing platinum or a platinum alloy, and a nozzle orifice for discharging the glass melt, the nozzle orifice being formed by the long-side walls and the short-side walls. The nozzle orifice has a flat hole shape in horizontal cross-section. Each of the long-side walls has a cut-out on a discharge side of the glass melt, a width of the cut-out being 10-55% of a length of a longitudinal center axis of the flat hole shape of the nozzle orifice. The pair of long-side walls has a symmetrical shape about the center axis of the nozzle orifice. This nozzle tip makes it possible to efficiently produce glass fibers having a desired cross-sectional shape.

A nozzle tip for producing glass fibers has a pair of long-side walls and a pair of short-side walls, each of the long-side walls and the short-side walls containing platinum or a platinum alloy, and a nozzle orifice for discharging the glass melt, the nozzle orifice being formed by the long-side walls and the short-side walls. The nozzle orifice has a flat hole shape in horizontal cross-section. Each of the long-side walls has a cut-out on a discharge side of the glass melt, a width of the cut-out being 10-55% of a length of a longitudinal center axis of the flat hole shape of the nozzle orifice. The pair of long-side walls has a symmetrical shape about the center axis of the nozzle orifice. This nozzle tip makes it possible to efficiently produce glass fibers having a desired cross-sectional shape.