EP0388260A1 - Vorrichtung zum kontinuierlichen Imprägnieren von Fäden - Google Patents

Vorrichtung zum kontinuierlichen Imprägnieren von Fäden Download PDF

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Publication number
EP0388260A1
EP0388260A1 EP90400632A EP90400632A EP0388260A1 EP 0388260 A1 EP0388260 A1 EP 0388260A1 EP 90400632 A EP90400632 A EP 90400632A EP 90400632 A EP90400632 A EP 90400632A EP 0388260 A1 EP0388260 A1 EP 0388260A1
Authority
EP
European Patent Office
Prior art keywords
wick
barrel
impregnation
conduit
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90400632A
Other languages
English (en)
French (fr)
Inventor
Jean Banos
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.)
Airbus Group SAS
Original Assignee
Airbus Group SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airbus Group SAS filed Critical Airbus Group SAS
Publication of EP0388260A1 publication Critical patent/EP0388260A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/04—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments
    • D06B3/045—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads or filaments in a tube or a groove

Definitions

  • the present invention relates to a device for impregnating a continuous wick which passes through an area of the device in which it is brought into contact with an impregnating liquid.
  • Such devices are used for the manufacture of composite materials, and more precisely for carrying out filament impregnation which makes it possible to produce coils by the wet route or semi-finished products called filament prepreg products.
  • filament prepreg products These techniques require the use of wicks or ribbons of filaments of any kind such as for example glass, kevlar, carbon, etc.
  • the impregnating liquid is generally a curable resin used as a binder or matrix for composite materials.
  • the resin is generally stored at temperature in a tank in which the wick is scrolled.
  • the quantity of resin stored at the desired temperature for good viscosity and therefore good impregnation is incompatible with the rate of sampling by the wick.
  • This has the drawback of causing premature aging of the overabundant resin in the tank, which causes changes in its properties, as well as a significant loss of resin when production is stopped, which necessitates complete cleaning of the equipment.
  • the die technique with a fixed or adjustable orifice, always causes more or less significant degradation of the wick by friction.
  • Document US-A-3,906,757 describes and represents a device for impregnating a wick which passes through a zone of the device which comprises a conduit for the pressurized arrival of the impregnating liquid, the outlet opening of which follows a transverse direction of the wick. This technique is not sufficiently effective because it does not allow the wick to be simultaneously impregnated all over its periphery and at heart.
  • the object of the present invention is to propose a device which makes it possible to remedy the drawbacks which have just been mentioned and which makes it possible to achieve perfect impregnation at the heart of the wick by using only the fairest quantity of impregnating liquid required. .
  • the invention proposes a device for impregnating a wick which passes through a zone of the device which comprises a conduit for the arrival under pressure of the impregnating liquid, the outlet orifice of which opens in a transverse direction of wick, characterized in that said zone is arranged in a guide barrel inside which the wick runs and in that the inlet duct opens into a straight part of the barrel generally perpendicular to the axis of this straight part.
  • the barrel has at least one change of direction downstream of the straight part;
  • the rectilinear part of the guide barrel is extended by a bent part of the barrel comprising two direction change elbows which are arranged successively to cause two changes of direction of the drill bit when it travels;
  • the two elbows are arranged in a plane containing the wick and the axis of the conduit perpendicular to one of the faces of the wick;
  • the device comprises at least two identical impregnation zones arranged in series; and -
  • Each inlet pipe is supplied with pressurized liquid by a circuit comprising a pressure source, pressure regulation means and means for regulating the flow rate of the impregnation liquid.
  • FIG. 1 shows a device 10 for impregnating a wick 12 with a resin contained in a closed pot forming a reservoir 14.
  • the wick 12 scrolls substantially horizontally in FIG. 1 in which the edge of the wick 12 can be seen, the plane common to its two opposite faces being perpendicular to the plane of the frame.
  • the tank-forming pot 14 is a pressure pot which is equipped with a pressure regulating device 16 from which there exits a conduit for supplying pressurized liquid 18 in which is interposed a valve for flow of the impregnation liquid under pressure 20 .
  • the end 22 of the conduit 18 is connected to a rectilinear bore 24 formed in a housing 26 fixed on a frame 28.
  • the bore 24 extends the conduit 22 and its outlet orifice 30 opens substantially perpendicularly into a barrel 32 for guiding the wick 12.
  • the barrel is rectilinear, of circular section and the outlet orifice 30 is opposite one of the faces 13 of the wick 12.
  • the drill bit scrolls in the direction of arrow A in Figure 1.
  • the length of the barrel, the pressure and the flow rate of the resin forming an impregnating agent must be determined according to the viscosity of the resin and the absorption capacity of the wick.
  • the barrel tube can be made of metal, plastic or glass.
  • the bent portion 36 comprises two direction change bends 38 and 40 which are arranged successively to cause two changes of direction of the wick 12 during its scrolling, both in the plane containing the wick and the axis of the duct 22 perpendicular to one of the faces of the wick.
  • the wick is found in a running direction parallel to that which it had before entering the impregnation zone of the housing 26.
  • T represents the tension applied to the wick 12 by the means causing it to run.
  • T ′ the reaction, P the pressure applied to the tape by the pressurized liquid.
  • This first part can make it possible to impregnate the core wick with a first product P1.
  • the device comprises a second part, to the right of FIG. 5, which is constituted by an arrangement similar to that of the first part, mounted in series in order to allow the wick already impregnated with the product P1 to be coated with a second product P2.
  • the device could of course include in series as many similar parts as there are layers which it is desired to deposit on the wick.
  • the use of a pressurized impregnation liquid makes it possible to impregnate the core of the wick without causing degradation or erosion.
  • the means 20 for regulating the flow make it possible to obtain a precise rate of impregnation of the wick while the combination of the means 20 and the pressure regulation means 16 makes it possible to avoid any loss of resin.
  • the resin under pressure forms a film between its face and the facing part of the impregnation device in the area of arrival of the resin, which practically prevents any erosion of the wick.
  • the invention is more particularly applicable to a circular section drill bit and therefore the realization of the circular section barrel using a portion of tube available on the market is very advantageous.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
EP90400632A 1989-03-14 1990-03-09 Vorrichtung zum kontinuierlichen Imprägnieren von Fäden Withdrawn EP0388260A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903304 1989-03-14
FR8903304A FR2644482B1 (fr) 1989-03-14 1989-03-14 Dispositif d'impregnation d'une meche en continu

Publications (1)

Publication Number Publication Date
EP0388260A1 true EP0388260A1 (de) 1990-09-19

Family

ID=9379653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400632A Withdrawn EP0388260A1 (de) 1989-03-14 1990-03-09 Vorrichtung zum kontinuierlichen Imprägnieren von Fäden

Country Status (2)

Country Link
EP (1) EP0388260A1 (de)
FR (1) FR2644482B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813699C (de) * 1949-03-19 1951-09-17 Rolf Hielle Einrichtung zum Impraegnieren von Faeden
GB943229A (en) * 1960-07-28 1963-12-04 William Watkins Improvements relating to the liquid treatment of textiles
US3906757A (en) * 1971-06-14 1975-09-23 Unitika Ltd Apparatus for continuous dyeing of yarns
FR2352092A1 (fr) * 1975-12-16 1977-12-16 Eltz H U Von Der Procede de teinture de matieres textiles sous forme de boyaux
US4119747A (en) * 1977-08-03 1978-10-10 Monsanto Company Method for applying a finish to a tow
FR2409798A1 (fr) * 1977-11-25 1979-06-22 Commw Scient Ind Res Org Procede et dispositif pour appliquer des liquides a des fils en deplacement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2328960A1 (de) * 1973-06-07 1975-01-02 Procter & Gamble Impraegnierverfahren und vorrichtung zur durchfuehrung des verfahrens
US4139662A (en) * 1977-11-14 1979-02-13 Armstrong Cork Company Method of and apparatus for metering fast-reacting saturant onto sheet material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE813699C (de) * 1949-03-19 1951-09-17 Rolf Hielle Einrichtung zum Impraegnieren von Faeden
GB943229A (en) * 1960-07-28 1963-12-04 William Watkins Improvements relating to the liquid treatment of textiles
US3906757A (en) * 1971-06-14 1975-09-23 Unitika Ltd Apparatus for continuous dyeing of yarns
FR2352092A1 (fr) * 1975-12-16 1977-12-16 Eltz H U Von Der Procede de teinture de matieres textiles sous forme de boyaux
US4119747A (en) * 1977-08-03 1978-10-10 Monsanto Company Method for applying a finish to a tow
FR2409798A1 (fr) * 1977-11-25 1979-06-22 Commw Scient Ind Res Org Procede et dispositif pour appliquer des liquides a des fils en deplacement

Also Published As

Publication number Publication date
FR2644482B1 (fr) 1991-06-07
FR2644482A1 (fr) 1990-09-21

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