Claims
- 1. A wound package produced according to a process comprising:i) mechanically drawing continuous filaments from thin streams of molten glass flowing from apertures provided in a base of a die plate; ii) collecting said filaments to form a strand or strands which are collected on a support, wherein a surface of said filaments is coated with a sizing composition while said filaments are being drawn, wherein said sizing composition has a solvent content less than 5 wt %, and wherein said sizing composition comprises a mixture of constituents which can be polymerized and/or crosslinked by heat treatment, at least 60 wt % of the constituents having a molecular weight (Mw) less than 750, less than 10 wt % being film-forming agents and 0 to 25 wt % being a member selected from the group consisting of a coupling agent, a lubricant, a stabilizer, an initiator, a catalyst for polymerization by heat treatment and a mixture thereof, and wherein said solvent is selected from the group consisting of an organic solvent and water; and iii) winding said strand or strands, formed by collection of said filaments, on a rotating support so as to form said wound package consisting of turns of strand coated with said sizing composition, wherein said filaments have an average diameter of between 5 and 24 μm.
- 2. The wound package of claim 1, wherein at least 60 wt % of said sizing composition is formed of constituents having a molecular weight (Mw) less than approximately 500.
- 3. The wound package of claim 1, wherein at least 60 wt % of said constituents of said mixture are monomers.
- 4. The wound package of claim 1, wherein said sizing composition is depleted of solvent prior to being coated on said filaments.
- 5. The wound package of claim 1, wherein said sizing composition further comprises up to 5 wt % of a film-forming agent selected from the group consisting of derivatives of silicones and/or siloxanes.
- 6. The wound package of claim 1, wherein said sizing composition further comprises up to 15 wt % of an organo silane coupling agent.
- 7. The wound package of claim 1, wherein said sizing composition further comprises up to 8 wt % of a lubricant.
- 8. The wound package of claim 1, wherein said sizing composition further comprises up to 4 wt % of a polymerization catalyst or an initiator.
- 9. The wound package of claim 1, wherein said sizing composition further comprises up to 3 wt % of a stabilizer.
- 10. The process of claim 1, wherein said wound package comprises an effective amount for sizing but less than 5 wt % of said sizing composition.
- 11. The wound package of claim 1, wherein said wound package is formed by observing an angle of intersection of at least 1.5°.
- 12. The wound package of claim 1, wherein a viscosity of said sizing composition is less than or equal to 400 cP.
- 13. The wound package of claim 1, wherein said sizing composition comprises at least 70 wt % of constituents which can be polymerized and/or crosslinked.
- 14. The wound package of claim 1, wherein between 75 and 100 wt % of said constituents of said sizing composition can be polymerized and/or crosslinked.
- 15. A wound package obtained by heat treating the wound package of claim 1, wherein said heat treating causes said glass strand or strands to become coated with said sizing composition in polymerized form.
- 16. The wound package obtained by heat treating of claim 15, wherein said coated glass strand or strands has an ignition loss of less than 5 wt %.
Priority Claims (1)
Number |
Date |
Country |
Kind |
93-14795 |
Dec 1993 |
FR |
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Parent Case Info
This is a Continuation, of application Ser. No. 08/354,822 filed on Dec. 8, 1994, now U.S. Pat. No. 5,698,000.
US Referenced Citations (14)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0001286 |
Apr 1979 |
EP |
0243275 |
Oct 1987 |
EP |
0570283 |
Nov 1993 |
EP |
Non-Patent Literature Citations (1)
Entry |
Abstract, JP-A-02 175 634(Sumitomo Electric Ind. Ltd.) Jul. 6, 1990. |
Continuations (1)
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Number |
Date |
Country |
Parent |
08/354822 |
Dec 1994 |
US |
Child |
08/933038 |
|
US |