Hybrid spinner for making a mixture of single-glass and dual-glass fibres right at the fibre forming stage

A spinner for use in producing a bi-component fibre containing fibreglass insulation product including an interior slinger cup;

• said slinger cup being circumferentially secured in a fixed manner to a bottom of said spinner inwardly of said spinner periphery;
• said slinger cup having a bottom portion extending inwardly and being adapted to receive a first molten glass A which, through centrifugal movement, forces said glass A in an outward direction;
• said slinger cup further comprising a vertically extending circumferential wall and an upper horizontally extending flange adapted to receive a second stream of molten glass B with a different coefficient of thermal expansion than said first glass A;
• said glass B being forced outwardly through centrifugal movement;
• said spinner having a plurality of vertical baffles creating vertical chambers inwardly of a spinner peripheral wall;
• said slinger cup having a plurality of openings on an outwardly facing wall, such that glass A emerges into first of said vertical chambers and glass B emerges above said slinger cup horizontal flange into second alternative vertical chambers;
• said chambers being greater than 2 in number and lesser than or equal to 32;
• said spinner further comprising a plurality of horizontal baffles disposed between said vertical chambers such that glass A and glass B enter separately from said vertical chambers between said baffles;
• said baffles creating alternate vertically disposed horizontal chambers;
• said spinner on its inner periphery wall having a plurality of apertures adapted to receive glass A from one horizontal chamber and glass B from an alternative upper or lower horizontal chamber;
• said apertures opening into either glass A or glass B channels leading to the exterior peripheral wall whereupon in operation each one of glass A channels and each one of glass B channels connects to a single common orifice through the spinner exterior peripheral wall;
• said spinner wall having a large number of orderly said single common orifices;
• thereby creating a bi-component primary glass fibre, which after further attenuation by a combined action of rotating spinner, external main burner and compressed air blower create curly, irregularly shaped glass fibres due to glass A and B having different coefficients of thermal expansion;
• said spinner further including portions of the inner peripheral wall containing a number of orifices or inlet holes accepting only glass A or glass B;
• said orifices communicating directly with the outer peripheral wall of said spinner through radial channels to outlets thereby producing through said orifices, channels and outlets straight glass fibres which will mix with said curly glass fibres and be further collected on the bottom, suction equipped, chain conveyor as a mixed fibre blanket or wool pack, subject to subsequent conventional processing down the production line.