US2913799A - Woven, lined tubular fabric and method and means for manufacturing same - Google Patents

Description

Nov. 24, 1959 J. RABEUX ETAL WOVEN, LINED TUBULAR FABRIC AND METHOD AND MEANS FOR MANUFACTURING SAME v Y 5 Sheets-Sheet 1 Filed Dec. 14, 1954 ATTORNEY Nov. 24, 1959 J. RABEUX ETAL 2,913,799

WOVEN, LINED TUBULAR FABRIC AND METHOD AND MEANS FOR MANUFACTURING SAME Filed Dec. 14, 1954 3 Sheets-Sheet 2 J. RABEUX ETAL Nov. 24, 1959 WOVEN, LINED TUBULAR FABRIC AND METHOD AND MEANS FOR MANUFACTURING SAME s Sheets-Sheet :s

'- Filed Dec. 14, 1954 gvENToRs @mm A v 0111/1/11 IIIIIIII/ AAA IIlIl/IIIIII/I/IIII ll/l/l/l/I/ Two supplyrollers material, of paper for example, wound thereon are rotat- U M 2,913,799 a i WOVEN, LINED TUBULAR FABRIC AND METHOD ANDMEANS FOR MANUFACTURING SAME Jean RaheuinJP'aris, and Raymond Jacob; Eaubonne,

' France: assignors to Societe dApplications Generales dElectricite & de Mecanique, Paris, France ice , Patented Nov. 24, 1959 'Aft'er passing the ',"adjustable guide mechanism the coated-surfaceloflthespaper ii faces outward, so

' the weaving ring 33 'of the loom, it may be cemented to An object of the invention is to provide a method by means of which seamless woven, lined tubular fabrics may be manufactured."

Anotherobject of the invention is to provide a device by means of which lined tubular fabrics may he'manufactured on a circular loom.

Other objects andstructural details of the invention will beapparentfrom the following description when read invconjunctionwith the accompanying drawings forming part of this specification, wherein'the device for use on a circular loom according to the invention is illustrated by way of example. v r

Fig. 1 is a fragmentaryvertical sectional view 'of the device according to the inventionfsome parts being brokenraway for the sake of better, illustration,

Fig. 2 is a secti fnal view taken on line II-II ofFi'g.

1, illustrating means broken away in Fig.1, a a

Fig. 3 is a sectional view taken on line III-III'of Fig.

1, illustrating the pressing means of the device, .partly' broken away inFig. 1, and e Fig. 4 is a side elevation, partly in section, of the pressing means showninFig, 3. V I g i Fig 5 shows at 53 the storing in rolls of two sheets :(54and 55) of material previously coated with an adhesive product, these-tWo sheets being rolled up with the two adhesive 'faces one against the other.

Fig. 6 shows a heating device placed in the weaving zone itself. This device substantially cornprisesfa heating ring 50 separated 'bya thin conducting wall 51 from the fabric-and-sheet product coated with the thermoplastic which is to insure adhesion.

lap 3 of several centimeters (Fig, 3);

Upon the cementing. of'the paper panel '3 to the tt1l: iila' r i fabric 38 withinthe weavi'ng ring '33 the paper 3 firmly? adheres to the inner surface of the fabric138.: Asthe' drawing-tut mechanism draws ofi theicollapsedvtubular. fabric 38 with the paper lining Scemente'd to the inner surface thereof, the feeding speed of the paper'3 equals the drawing-off speed of'the fabric 38. The tension in the paper 3 may be adjusted by a'suitable adjustment of the guiding mechanism 5 by means of the lever 5.

In order to assist the paper 3, are; its unwindingfrom the supply roll 1 and passingguidemechan sm '5, in changing from its planesha'pe into the required semicylindrical shape, another guiding device is provided which is mounted onarms 4t), 41 rigid with a sleeve ZSYadjuStably attached .to..the shaft 9 bya'screwjAZ. Said guiding device comprises small rollers 28 journalled at the ends of bars 26, 27 secured to the arms 40 and 41 respectively. Said rollers 28 urge the paper 3 inwardly into curved shape. i

' Above the weaving zonejiedabove the upper of the weaving ring 33several heating lamps (i radiat ng infra-red rays are mounted one ring 29 carried by reds The heating of the ,ring

may be effected by, a wound electric resistance or by a circulating hot fluid, liquid, steam or air. The heat is limited to the desired zone by, the protection of a thermal insulator 40 placed outside of the heating ring.

Fig. 7 illustrates a modifi ation of the heating system.

plied through coating .by means of a roller and vat or whichmay have been pulverized or deposited at 40 (Fig. 61) is caused to form a bond by means .of pressure in the rolls and is thendried at 44 below the weaving zone by a lamp or bank of lamps.

-Referring now to Fig. '1, 36 generally indicates'. the

auxiliary device according to the invention attached ito a circular loom with a horizontal shed 31 and aweaving 1 each having a sheet 3 of lining ably mounted diametrically opposite to each other, on a frame 2 l'adjustably mounted ,on a fixed vertical shaft 9 --oaxially arranged with the longitudinal axis of the cir- The undriedadhesive product which may have been ap- 3t; hinged to the frame) at 31. Theintensity of radiation orthese lamps acting on the coated surface of the paper 3 within a rangelim'itedby ,thej circl es 7 and 4 (see Fig. 1) is adjusted in accordance with the speed ofope'ration, and, "thus, output of the loom in such a mani1er" that the asphaltic cement jon the paper 3'isfsoft enough jtostick to the fabric 38 when it contacts the latterbe'yond circle 4, The switching-onand switchingoif .of'these lamps is synchronized vwith the operation of the loom. "in order to avoid faults in thecementing of the paper 3 tothe" fabric, 'means may be'p'rovided by which the lamps 6 maybe switched on ,before the loom is started alter a relativelylong standstill.

In order to paste the paper 3 firmly to the fabric 38 upon entering the weavingzone it is pressed against the fairness by means of apressing device 45'arranged within the weaving ring 33. As best shown in Fig.v 3,'said pressing device 45 comprising four wooden rollersjs rnay rotate. around the vertical axis of the loom, coinciding with the longitudinal axis of the shaft 9, in the direction of the arrow A, i.e. opposit e to the direction of rotation of the shuttles. The speed of rotation of said pressure device 45 must be such that the path described by the rollers 8 on the downwardly moving fabric 38 is in the form of a helix which is .so fiat that during each revolution of the pressure device 45 the pressure zone of each wooden roller 8 joverlaps a portion ofthe pressure zone ofthe preceding roller. 9 r r As best shown in Figs. 3 and 4, a bracket 10 is secured to the upper part of a sleeve 11 fixed to the shaft 9. A hub 12 provided with four hollow spokes 13 is rotatably mounted on the lower part of sleeve 11. A sleeve 22 is axially movable in each of the hollow spokes 13. Each wall 46-of the associated sleeve 22; the other end of said spring 20 presses against the bottom 21 of the hollow cular loom. One surface of ,the sheet 3 of paper coated withan adhesive, for example an asphaltic cement spoke 13. A rod 23 on the lower part of sleeve 22 carrying the rollers 8 is guided in a hole of a projection 24 of the hollow spoke 13 in order to prevent the parts 22, 23 hearing the rollers 8 from rotation.

On the] bracket an electromotor 15 is mounted which by" means of gear wheels'16, 17 and a worm 18 rotates a Bythe use of the device the doubling of the fabric, i.e.

the attachment of a lining to the fabric in a separate working step is avoided. Furthermore, the device according to the present invention renders possible the manufacture of seamless woven tubular fabrics with a lining attached thereto. The lining may be of any suitable material, for example paper, rubber, a plastic, or any other synthetic or natural. material. Any suitable adhesive may beused for cementing the lining to the fabric.

Aseamless woven, lined tubular fabric according to the invention is especially useful for the manufacture of bags, sacks or the like, wherein the lining is used to prevent the escape of material placed into the bag or the like through pores of the fabric thereof and to prevent further outside air or moisture from entering into the bag or the like.

Hitherto lined fabrics are made in such a way that the fabric is'woven on an ordinary loom and subsequently a lining is applied to the fiat fabric in a separate step one pasting machine requiring additional space in the factory and operators for servicing same, whereby the costs of manufacture become very high. The bags and sacks produced from doubled fabrics woven on ordinary looms and lined in this hitherto customary manner, however, have at least one lateral seam. As a matter of fact, the protective lining and, of course, the fabric are interrupted atsuch a seam, so that moisture is liable to enter, or powdery material may escape through the seam.

1y after the pressing-on of the sheet to the tubular fabric so as to cause a drying and binding of the adhesive. Preferably an adhesive is used, which binds fast enough so that the normal speed of operation of the loom may be maintained. I

When an asphaltic cement is to be applied to the sheet, preferably heating devices with automatic temperature control are used.

The heating device causes a heating of the adhesive or the coated sheet or the thermoplastic sheet (if such a material is used) to the desired temperature necessary to cause the adhesive effect.

If desired the weaving ring arranged in the weaving zone can be designed as a heating means which may be switched on and off together with the motor driving the loom.

Instead of a dynamic pressure device as that shown in the drawings (see Figs. 3 and 4), which is automatically started and stopped with the starting and stopping of the loom, stationary pressure means may be provided within the weaving ring, such as leaf springs or spring-loaded pressure members.

We have described preferred embodiments of our invention, but it is understood that this disclosure is for the purpose of illustration and that various omissions or changes in shape, proportion and arrangements of parts,

. as Well as the substitution of equivalent elements for These drawbacks are avoided by the present invention, 7

according to which 'a tubular fabric is woven on a circular loom and panels of a lining material, preferably a non-textile material,'are cemented to the inside of said tubular fabric in the same operation.

The woven tubular fabric manufactured in the manner described above comprises two panels of non-textile material cemented to the inner surface of the tubular fabric. If desired, however, more than two such panels could be cemented to the tubular fabric in a similar manner.

Instead of using two individual supply rolls witha winding of a sheet of lining material on each roll, only one supply rol-l could be arranged above the loom, the sheet wound thereon consists of two non-textile layers sticking to each other through an adhesive. In such a case, however, means must be provided by which the sheet consisting of two layers at first is guided upwardly, whereupon the two layers are separated from each other by rollers and guided laterally and downwardly to the weaving zone, where, as in the illustrated example, a pressure device is arranged to press both layers onto the inner surface of the tubular fabric, it being understood that the coated surface of each layer faces the inner surface of the tubular fabric.

Instead of using supply rolls with a'winding of a sheet coated at one of its surfaces with an adhesive, it is possible to use rolls with a winding of a sheet free from any adhesive coating and to apply an adhesive substance to the sheet, by spraying or spreading-on the adhesive, for example, during its downward movement to the weaving zone. In this case, of course, the adhesivemust be subjected to a heat treatment simultaneous with or shortthose, herein shown and described may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

What we claim is:

1. A method for the manufacture of a woven, lined tubular fabric, comprising the steps of: weaving a tubular fabric on a circular loom having a weaving ring, supplying to the interior of said weaving ring a lining material coated at one of its surfaces with a material capable of becoming an adhesive, processing said material so that it becomes an adhesive, and bringing the adhesive opposite the inner surface of the tubular fabric, drawing off the tubular fabric and the lining material at the same speed, and pressing the adhesive against the inner surface of said tubular fabric for cementing the former to the latter.

2. In amethod as claimed in claim 1, the step of subjecting the coated surface of the lining material to a heat treatment.

3. In a method as claimed in claim 2, the step of subjecting the coated surface of the lining material to a heat treatment before it reaches the'weaving ring.

4. In a method as claimed in claim 2, the step of subjecting the coated surface of the lining material to a heat treatment during its passage through the weaving ring.

5. In a circular loom, the combination'of: a weaving ring, means for supplying at least one length of lining material coated at one of its surfaces with an adhesive into the interior of said weaving ring, guiding means for guiding the supplied lining material to said weaving ring with its coated surface facing the inner surface of the tubular fabric woven by the implements of the loom, heating means for heating the coated surface of the lining material, pressing means for pressing said lining material onto the inner surface of the tubular fabric so as to cause an adhesion of the lining material to the fabric, means for drawing off the tubular fabric with the lining material cemented thereon, said heating means comprising a heated device arranged above said weaving ring for heating the coated surface of the lining material in the zone above the weaving ring.

6. In a circular loom,-the combination of: a weaving ring, means for supplying at least one length of lining material coated at one of its surfaces with an adhesive into the interior of said weaving ring, guiding means for guiding the supplied lining material to said weaving ring with its coated surface facing the inner surface of the tubular fabric woven by the implements of theloom, heating means for heating the coated surface of the lining material, pressing means for pressing said lining material onto the inner surface of the tubular fabric so as to cause an adhesion of the lining material to the fabric, means for drawing off the tubular fabric with the lining material cemented thereon, said heating means comprising a ring arranged above said weaving ring, and a series of infra-red lamps mounted on said ring for emanating rays onto the coated surface of the lining material in a zone above the upper edge of said weaving ring. I

7. In a circular loom, the combination of: a weaving ring, means for supplying at least one length of lining material coated at one of its surfaces with an adhesive into the interior of said weaving ring, guiding means for guiding the supplied lining material to said weaving ring with its coated surface facing the inner surface of the tubular fabric woven by the implements of the loom, heating means for heating the coated surface of the lining material, pressing means for pressing said lining material onto the inner surface of the tubular fabric so as to cause an adhesion of the lining material to the fabric, means for drawing off the tubular fabric with the lining material cemented thereon, said heating means comprising a heating device arranged in said weaving ring for heating the coated surface of the lining material during its passage through said weaving ring.

8. In a circular loom, the combination of: a weaving ring, means for supplying at least one length of lining material with a coating into the interior of said weaving ling, means for processing said coating so that it becomes an adhesive, the adhesive facing the inner surface of the tubular fabric woven by the implements of the loom, pressing means arranged within said weaving ring for pressing the lining material with the surface bearing the adhesive against the inner surface of said tubular fabric, and means for drawing-off the tubular fabric together with the lining material.

9. In a circular loom as claimed in claim 8, said pressing means being arranged within said weaving ring, and a heating device arranged at the level of said pressing means for heating the adhesive in the pressing zone.

10. In a circular loom as claimed in claim 8, said pressing means being arranged within said weaving ring, and a heating device arranged below the level of said pressing means for heating the adhesive after passing the pressing zone.

11. In a circular loom, the combination of a weaving ring, means for supplying at least one length of lining material coated at one of its surfaces with an adhesive into the interior of said Weaving ring, guiding means for guiding the supplied lining material to said Weaving ring with its coated surface facing the inner surface of the tubular fabric woven by the implements of the loom, heating means for heating the coated surface of the lining material, pressing means for pressing said lining material onto the inner surface of the tubular fabric so as to cause an adhesion of the lining material to the fabric, means for drawing off the tubular fabric with the lining material cemented thereon, said supplying means comprising a roller having a winding of a sheet of lining material consisting of two layers sticking to each other through an adhesive, means for separating said two layers from each other at a point between said supplying means and said weaving ring, and guiding means for guiding the separated layers to said weaving ring in a position wherein the surfaces carrying the adhesive face the inner side of the tubular fabric.

References Cited in the file of this patent UNITED STATES PATENTS 749,424 Collins Jan. 12, 1904 757,610 Flowers Apr. 19, 1904 1,110,671 Cobb Sept. 15, 1914 1,327,677 Kennedy Jan. 13, 1920 2,127,012 Spangler et al. Aug. 16, 1938 2,321,937 Quinn June 15, 1943 2,459,688 De Vyver Jan. 18, 1949 2,735,451 Christiansen et al Feb. 21, 1956 FOREIGN PATENTS 475,544 Italy Nov. 3, 1952 1,118,814 France Mar. 26, 1956

Images