High throughput capacity spinner for manufacturing dual-component curly fibers

• US 6,990,837 B2
• Filed: 05/16/2002
• Issued: 01/31/2006
• Est. Priority Date: 04/04/2002
• Status: Expired due to Fees

• Current Assignee: Ottawa Fibre LP (Compagnie De Saint-Gobain S.A.)
• Original Assignee: Ottawa Fibre Inc. (Compagnie De Saint-Gobain S.A.)
• Inventors: Banaszkiewicz, Stan, Skarzenski, Joseph, Czastkiewicz, Witold S.
• Primary Examiner(s): Griffin, Steven P.
• Assistant Examiner(s): Herring, Lisa
• Application Number:
  US10/147,717
• Publication Number:
  US 20030188557A1
• Time in Patent Office: 1,356 Days
• Field of Search: 655/21, 655/22, 655/23, 655/02, 654/59, 654/70, 655/16, 425/8
• US Class Current: 65/521
• CPC Class Codes: C03B 37/044 for producing fibres of at least two distinct glass compositions, e.g. bi-component fibres conjugated artificial filaments or the like, e.g. with glass fibres, D01F8/00
• CPC Class Codes: D01D 5/18 by means of rotating spinnerets
• CPC Class Codes: Y02P 40/57 Improving the yield, e-g- reduction of reject rates

Abstract

A spinner and a distributor spinner cup fixedly nested within the spinner are adapted to receive two molten thermoplastic materials of different coefficients of thermal expansion to produce a dual-component glass fiber insulation product. The inside wall of the spinner peripheral side wall is adapted to receive, through horizontal slots adjacently vertically disposed, first and second molten thermoplastic materials and centrifuge same into horizontal annular non-interrupted circumferential cavities disposed above and below one another. Passages lead from exit orifices in each cavity outwardly at differing angles. Passages from first and second thermoplastic material cavities join with one another at orifices on an outer side of the peripheral side wall.

Claims

1. A spinner for use in producing a bi-component fiber containing fiberglass insulation product including an interior distributor spinner cup;

said distributor spinner cup being secured in a fixed manner to a bottom of said spinner inwardly of a peripheral side wall of said spinner;

said cup having a bottom wall adapted to receive a first molten glass A and move said glass A in an outward direction;

said 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 said spinner peripheral side wall;

said cup having a plurality of openings in said vertically extending circumferential wall, such that glass A emerges into first of said vertical chambers and glass B emerges above said 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 peripheral side wall further comprising a plurality of horizontal slots such that glass A and glass B enter separately from said vertical chambers into said slots;

said slots communicating with alternate vertically disposed annular horizontal cavities;

each said cavities having a plurality of apertures adapted to receive either alternatively glass A from one horizontal cavity and glass B from an alternative upper or lower horizontal cavity;

said apertures opening respectively into either glass A or glass B channels leading to an exterior wall surface of said peripheral side wall whereupon in operation each one of glass B channels connects to a single common orifice with a glass A channel through said exterior wall surface of said peripheral side wall;

said exterior wall surface having a large number of said single common orifices, thereby creating in operation dual component curly shaped glass fibers.

2. A spinner as claimed in claim 1 wherein said peripheral said wall includes a plurality of channels between an inside surface of said side wall and an outside surface of said side wall;

said channels permitting molten glass to pass through said peripheral side wall;

the number of said channels originating through each of first and second single glass inlet holes being four in number;

one of said channels of each of said first single glass inlet holes being positioned to join one channel of said single second glass inlet holes to exit through dual glass exit holes in said outside surface of said side wall.

3. A spinner as claimed in claim 2 wherein pairs of said channels reside in two distinct planes;

two of said channels being in a spinner radial plane; and

two of said channels being in a radially inclined plane parallel to a spinner axis.

4. A spinner as claimed in claim 3 wherein one channel in said radially inclined plane resides in a plane perpendicular to said spinner axis.

5. A spinner as claimed in claim 4 wherein an intersection of said channels in said radially inclined plane with said spinner outside peripheral wall lies between an intersection of two nearby radial plane channels.

6. A spinner as claimed in claim 5 wherein an angle between said spinner radial plane channels and radially inclined plane channels parallel to a spinner axis from said inlet holes is between 5 to 30 degrees.

7. A spinner as claimed in claim 6 wherein said angle is 5 to 20 degrees.

8. A spinner as claimed in claim 6 wherein said angle is between 7.5 and 15 degrees.

9. A spinner as claimed in claim 6 wherein an angle between channels in said radially inclined plane is between 25 and 75 degrees.

10. A spinner as claimed in claim 9 wherein the angle between flow channels in said radially inclined plane and a perpendicular to the spinner axis is between 15 and 60 degrees.

11. A spinner as claimed in claim 2 wherein a diameter of all four channels originating from said inlet holes is equal.

12. A spinner as claimed in claim 2 wherein said dual glass exit holes are not uniform from top to bottom of said spinner outer peripheral wall.

13. A spinner as claimed in claim 2 wherein said dual glass exit holes are staggered and fully symmetrical.

14. A spinner as claimed in claim 2 wherein said dual glass exit holes are staggered and partially offset to one side.

15. A spinner as claimed in claim 1 adapted to produce a dual component fiberglass product;

said spinner including an exterior peripheral side wall with a dense, staggered and uniform hole pattern.

16. An apparatus for making dual component glass fibers comprising:

a spinner having a bottom wall, a circumferential peripheral side wall, and an upper horizontally disposed top flange;

said apparatus including equipment for supplying first and second molten materials to a distributor spinner cup located within said spinner;

said spinner further comprising a plurality of vertically oriented flanges circumferentially placed about an inner surface of said peripheral side wall;

said vertically oriented flanges extending radially inwards and terminating adjacent to an outer side of a vertically disposed peripheral wall of said distributor spinner cup, thereby providing a plurality of vertically oriented compartments;

said distributor spinner cup also including a bottom wall fixedly attached to said bottom wall of said spinner, and a horizontally disposed mid-flange extending inwardly from said vertically disposed peripheral side wall;

said mid-flange including an upturned vertically disposed circumferential end flange, and said distributor spinner cup having a horizontally disposed top flange extending radially inwardly from the top of said vertically disposed peripheral side wall;

said distributor spinner cup mid-flange being adapted to receive a second molten B glass stream and, in operation, through rotation, centrifugally move said glass B stream to an inner side of said peripheral wall of said cup, above said mid flange through a plurality of horizontally disposed apertures openly connected to every second adjacent vertically oriented compartment;

said spinner distributor cup bottom wall being adapted to receive a first molten glass stream A and, in operation, through rotation, centrifugally move on said first molten glass stream A to said inner side of said peripheral side wall of said distributor spinner cup below said mid-flange through a plurality of horizontally disposed apertures openly connected to every first adjacent vertically oriented compartment;

said spinner peripheral side wall having an inner wall, an inner interior wall portion, an outer interior wall portion, located outwardly of said interior wall portion and an outer wall;

said inner wall and said inner interior wall portion of said spinner peripheral side wall having a plurality of first horizontal open slots, adapted to receive glass A from glass A vertical compartments, and vertically disposed upwards or downwards adjacently a plurality of second horizontal slots adapted to receive glass B from glass B vertical compartments, thus said horizontal slots are stacked upwardly and downwardly with adjacent molten glass streams of A and B glass;

each glass stream A exits outwardly to an annular, non-interrupted, horizontally-disposed cavity located circumferentially within said inner interior wall portion of the spinner peripheral side wall;

and each glass stream B exits outwardly to an annular upper or lower adjacent, non-interrupted, horizontally-disposed cavity located circumferentially within said inner wall portion of the spinner peripheral side wall;

each of said cavities containing said A and B glasses, includes a plurality of exit orifices, each of which communicates with a plurality of passages extending outwardly within said outer interior wall of said spinner peripheral side wall which join together as A &

B combined glass streams and exit through common orifices in said outer wall of said spinner peripheral side wall to form in operation, dual-component helical, curly glass fibers of two glasses of differing coefficients of thermal expansion.

17. An apparatus as claimed in claim 16, wherein each exit orifice in said cavities of said A and B glasses communicates with at least three of said passages extending outwardly within said outer interior wall of said spinner peripheral side wall.

18. An apparatus as claimed in claim 16, wherein said passages extending outwardly from said exit orifices in said cavities extend outwardly, at angles less than 60 degrees, providing that each passage containing A glass joins with a passage containing B glass at a common orifice in said outer wall of said spinner peripheral side wall.

19. An apparatus as claimed in claim 17, wherein said passages extend outwardly either horizontally to the left or right towards said outer wall, or vertically up or down towards said outer wall, or obliquely in any direction towards said outer wall.

20. An apparatus as claimed in claim 16, wherein said common orifices in said outer wall of said spinner peripheral side wall are at least 2 times greater in number than said exit orifices in said cavities.

21. An apparatus as claimed in claim 17, wherein said common orifices in said outer wall of said spinner peripheral side wall are at least 3 times greater in number than said exit orifices in said cavities.