US3559618A - Apparatus for coating glass filaments - Google Patents

Apparatus for coating glass filaments Download PDF

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Publication number
US3559618A
US3559618A US807685A US3559618DA US3559618A US 3559618 A US3559618 A US 3559618A US 807685 A US807685 A US 807685A US 3559618D A US3559618D A US 3559618DA US 3559618 A US3559618 A US 3559618A
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United States
Prior art keywords
filaments
roller
comb
resin
tensioning
Prior art date
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Expired - Lifetime
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US807685A
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English (en)
Inventor
Robert Basier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Houilleres du Bassin du Nord et du Pas de Calais
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Houilleres du Bassin du Nord et du Pas de Calais
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Publication of US3559618A publication Critical patent/US3559618A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/12—General methods of coating; Devices therefor
    • C03C25/20—Contacting the fibres with applicators, e.g. rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8016—Storing, feeding or applying winding materials, e.g. reels, thread guides, tensioners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8066—Impregnating

Definitions

  • McIntosh Attorney-Mam & Jangarathis ABSTRACT Apparatus for coating glass filaments with a liquid cross-linkable resin, which comprises a freely rotatable roller coater, guide means located upstream of the roller whereby the length of the arc of contact of the filaments with the roller surface may be varied, a combined wiper and 'recombiner for the coated filaments located downstream of the roller, and tensioning means for tensioning the filaments passing through the apparatus.
  • PATENTED FEB 2197! APPARATUS FOR COATING GLASS FILAMENTS This invention is concerned with apparatus for coating glass filaments with a cross-linkable resin in liquid form.
  • cross-linkable resins such as polyesters, polyepoxides and phenolic resins
  • the glass filaments have been coated with resin by passing them through a bath of the resin.
  • the glass filaments come off a bobbin carriage and, after being aligned by passage through a metal comb, go over a stationary steel support rod and then descend inclinedly into a tank containing the resin.
  • the filaments pass round a stationary metal guide and tensioning rods at the bottom of the tank and ascend from the tank and pass to wiper rods and tensioning rods for removal of excess resin.
  • the filaments go over a pivoted arm tensioner which adjusts the tension of the sheet or sliver of filaments to a constant value, whereafter the sliver passes to a rodding device before being wound on to the rotating former.
  • a system of this kind has many disadvantages. For instance, since the sheet of glass filaments rubs on metal combs and stationary metal rods and describes sharp bends in the tank, a relatively large number of filaments are broken during the operation; also, the filaments which are under heavy tension are unsatisfactorily coated with resin and carry a considerable excess of resin which drips on to the wiper rods.
  • apparatus for coating glass filaments with a cross-linkable resin in liquid form which comprises a horizontally disposed, freely rotatable cylindrical roller, means for applying liquid resin to the surface of the roller so that, in use, glass filaments contacting the surface of the roller are coated with the resin, a first guide means located upstream of the roller for adjusting the path of the filaments passing to the roller whereby the length of the arc of contact of the filaments with the roller surface may be varied, a combined wiper and recombiner means disposed downstream of said roller and comprising a knife member having a planar convex rubber blade and a rigid member spaced from said blade and curved to conform to the curvature of said blade so that surplus liquid resin is wiped from the coated filaments passing between said blade and rigid member, and tensioning means for tensioning the filaments passing through the apparatus.
  • the first guide means preferably comprise a vertically adjustable tensioning jockey and the part of the latter that contacts the glass filaments is preferably formed of polyformal resin.
  • the apparatus preferably comprises a first comb arranged in the path of the filaments upstream of said first guide means,
  • a second comb arranged in the path of the filaments intermediate said roller and said combined wiper and recombiner means, and second guide means located intermediate a said roller and said second comb.
  • the cylindrical roller is preferably provided with a doctor blade having a micrometer adjustment, to adjust the thickness of the resin film on the roller, a gap of approximately 0.2-0.8 mm. being preferred, so as to reduce unnecessary carrying of an excess of the resin by the filaments.
  • the roller is preferably provided also with a scraper to collect any lumps or pieces of filament accidentally deposited on the cylinder.
  • the intertooth spacing of the second comb is preferably less than that of the first comb, and any comb further downstream has intertooth spacing less than the preceding upstream comb.
  • the combined wiper and recombiner means removes excess resin carried along by the glass filament sliver and combines all the filaments into a single sheet which thus becomes condensed and thickened.
  • FIG. 1 is a diagrammatic elevation, partly in section, of the apparatus.
  • FIG. 2 is a detailed plan view of the combined wiper and recombiner.
  • the apparatus comprises an entry comb 1 having cylindrical sintered titanium oxide teeth la mounted on a compressed bakelised wood support, the comb serving to lay in one direction glass filaments 2 going from a bobbin carriage (not shown) towards a jockey 3 made of polyformal resin and disposed after the comb 1 and mounted on an arm 4 adjustably secured to a frame 5.
  • the glass filaments then go over a stainless steel cylinder 6 adapted to rotate freely about its axis and partly immersed in a tank 7 containing cross-linkable resin 8.
  • a steel doctor blade 9 with a micrometer adjustment, and a scraper comb 10 are provided.
  • the device 9 serves to control the thickness of the resin film on cylinder 6 and the comb 10 serves to collect lumps of glass fibre deposited on the cylinder 6.
  • the impregnated filaments then go under a polished steel tensioning rod 11, through an intermediate comb 12 having sintered titanium oxide teeth, to a combined wiper and recombiner 13 comprising a steel knife having a planar convex blade 12a (see also FIG. 2) edged with rubber 13b and cooperating with a steel rod 13c which is curved at its center to intimately match the shape of the knife blade.
  • the impregnated glass filaments are then taken up on a pivoted arm tensioner 14 which is urged to apply tension by a resilient loading device 15 the tensioner 14 having tensioning and guide rollers 16-19 to adjust the tension of the sheet of impregnated filaments to a constant value.
  • the filaments then pass to a rodding device 20 having a comb with polished steel teeth 20a and polished steel rods 20b, 20c.
  • the jockey 3 can be moved between two positions to provide an adjustment, of between approximately 5 and 30, of the angle over which the glass filaments engage with the cylinder 6. On either side of these values there is appreciable filament breakage.
  • the use of combs having sintered titanium oxide teeth and of a smooth jockey of polyformal material is another means of reducing the breakage of untreated glass filaments.
  • limiting the thickness of resin film on the cylinder 6 to approximately 0.2- 0.8 mm. is an effective way of ensuring that the filaments do not carry an excess amount of resin.
  • Norsodyne type 292 T a tetrahydrophthalic polyester resin made by the Houilleres du Bassin du Nord et du Pas-de-Calais, having a 38.2 percent styrene content (viscosity: 3 poises at 25 C. and containing 2 percent (by weight) colloidal silica and 2 percent (by weight) paraffined styrene, was used as the cross-linkable resin.
  • This resin was used to coat glass filaments in two forms of apparatus, one according to the invention and the other a conventional apparatus (control experiment) and the filaments were wound on aformer to make 3,000-litre capacity tanks. The results obtained are given in table I below:
  • Theoretical weight 55.36 kg 140 kg.
  • the apparatus according to the invention enables the maximum sliver speed to be increased from 17 m./min. (conventional apparatus) to 43 m./min., i.e. by 2.5 times, sliver tension from 200 to 570 kg. (the output is practically prestressed material), the percentage of glass in the finished product from 60 percent to a constant and reproducible 80 percent, and the theoretical weight of glass filaments delivered per hour from 55 to 140 kg.
  • Apparatus for coating glass filaments with a cross-linkable resin in liquid form which comprises a horizontally disposed, freely rotatable cylindrical roller, means for applying liquid resin to the surface of the roller so that, in use, glass filaments contacting the surface of the roller are coated with the resin, a first guide means located upstream of the roller for adjusting the path of the filaments passing to the roller whereby the length of the arc of contact of the filaments with the roller surface may be varied, a combined wiper and recombiner means disposed downstream of said roller and comprising a knife member having a planar convex rubber blade and a rigid member spaced from said blade and curved to conform to the curvature of said blade so that surplus liquid resin is wiped from the coated filaments passing between said blade and rigid member, and tensioning means for tensioning the filaments passing through the apparatus.
  • said first guide means comprise a vertically adjustable tensioning jockey.
  • Apparatus according to claim 1 which comprises a first comb arranged in the path of the filaments upstream of said first guide means, a second comb arranged in the path of the filaments intermediate said roller and said combined wiper and recombiner means, and second guide means located intermediate said roller and said second comb.
  • said tensioning means comprise a pivoted arm tensioner arranged in the path of the filaments downstream of said combined wiper and recombiner means and rodding device carrying a third comb arranged in the path of the filaments downstream of said pivoted arm tensioner.
  • said first guide means is adapted to provide an arc of contact of the filaments with the roller surface of from 5 to 30.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Coating Apparatus (AREA)
  • Reinforced Plastic Materials (AREA)
US807685A 1968-03-29 1969-03-17 Apparatus for coating glass filaments Expired - Lifetime US3559618A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR146476 1968-03-29

Publications (1)

Publication Number Publication Date
US3559618A true US3559618A (en) 1971-02-02

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ID=8648404

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US807685A Expired - Lifetime US3559618A (en) 1968-03-29 1969-03-17 Apparatus for coating glass filaments

Country Status (7)

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US (1) US3559618A (xx)
BE (1) BE728528A (xx)
DE (1) DE1916262A1 (xx)
FR (1) FR1566785A (xx)
GB (1) GB1215102A (xx)
LU (1) LU58287A1 (xx)
NL (1) NL6904824A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908042A (en) * 1971-01-15 1975-09-23 Maschf Augsburg Nuernberg Ag Process for the impregnation of fiber strands and tapes
EP1864953A2 (en) * 2006-06-08 2007-12-12 Johns Manville Fiber sizing applicator and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2349674A1 (de) * 1973-10-03 1975-04-17 Arthur Benjamin Eymore Vorrichtung zum zufuehren von fluessigkeitsimpraegniertem faden- oder fasermaterial
US4068619A (en) * 1975-12-05 1978-01-17 Johns-Manville Corporation Assembly for applying liquid to elongated material
US4374689A (en) * 1981-07-23 1983-02-22 United Technologies Corporation Method and apparatus for filament winding

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1288641A (en) * 1917-03-13 1918-12-24 Charles W Mayer Coating-machine.
US2861541A (en) * 1955-08-16 1958-11-25 Beloit Iron Works Device for coating a traveling sheet
US3323298A (en) * 1963-09-09 1967-06-06 American Can Co Apparatus for treating a web material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1288641A (en) * 1917-03-13 1918-12-24 Charles W Mayer Coating-machine.
US2861541A (en) * 1955-08-16 1958-11-25 Beloit Iron Works Device for coating a traveling sheet
US3323298A (en) * 1963-09-09 1967-06-06 American Can Co Apparatus for treating a web material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908042A (en) * 1971-01-15 1975-09-23 Maschf Augsburg Nuernberg Ag Process for the impregnation of fiber strands and tapes
EP1864953A2 (en) * 2006-06-08 2007-12-12 Johns Manville Fiber sizing applicator and method
US20070298177A1 (en) * 2006-06-08 2007-12-27 Michael David Folk Fiber sizing applicator and method
EP1864953A3 (en) * 2006-06-08 2008-02-20 Johns Manville Fiber sizing applicator and method
US7803429B2 (en) * 2006-06-08 2010-09-28 Johns Manville Method of coating fibers

Also Published As

Publication number Publication date
BE728528A (xx) 1969-08-01
LU58287A1 (xx) 1969-07-15
NL6904824A (xx) 1969-10-01
GB1215102A (en) 1970-12-09
DE1916262A1 (de) 1969-12-18
FR1566785A (xx) 1969-05-09

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