IL29803A - Process for the production of foil ribbon fabrics and apparatus for carrying out this process - Google Patents

Description

PROCESS FOB THE PRODUCTION OF FOIL RIBBON FABRICS AND APPARATUS FOR CARRYING OUT THIS PROCESS invention relates to process for ducing foil ribbon fabrics on a said process comprising continuously feeding the ribbons ting the warps and those constituting the wefts to the Particularly suitable as foil materials are polymer which are capable of being stretched and fixed under in particular Foil ribbon fabrics have so far been tured in such a that oontlnuous sheet foil or tubular stock is produoed by an extrude having a slit or said or foils are then out to and finally wound up on Those ribbons destined to Constitute the warps are fed to loom by means of a grate and possibly a warp The weft ribbons are likewise colleoted on the bobbins onto shuttle spools and then fed to the Complicated looms also provide the possibilit of working without the wefts being directly drawn off bobbins stuck onto the the process is consuming in a large amount of space since the grates preceding the loom o a warp beam forming means must be to accommoda e hundreds of It also been proposed to produce fla yarn a woven or meshed using synthetic yarns made from in particular from waste cinematographic films being cut to ribbons and the ribbons being fed as warps directly from the cutting station to the weavin or meshing process avoids the intermediate of the warps and warping on a warp sinoe the material to be cut a cutting such as a cutting must be used in order to ensure parallel This volves additional alms at avoiding these vantages and difficulties and has as object provide a prooese for producing foil ribbon fabrics of high while avoiding the previous high capital and ture connected with the of the w and weft ribbons o yarns and the necessity of keeping a large stock of process of the invention cutting at least the warp ribbons from monoaxially stretched both the warp and the weft ribbons are out from stretched No complicated ing devices and no guide means are required for cutting a monoaxially stretched The work for be carried out with a stationary row of stretched foil splits up whore it is touched by the knife and this so that parallel makes no difficulties In cutting the weft as contrasted to the cutting of the warp a problem is due to the faot that the weft ribbons have to be fed to the loom or weaving machine at a much higher rate than the warp According to the preferred embodiment of the this problem is solved by the weft ribbons out from a monoaxially stretched wound to a roll peripheral parallel the distance between corresponding to the desired width of and the depth of each out reaching through several and the ribbons being continuously drawn off during outting and fed the loom or weaving Owing to the simultaneous cutting of plurality of superposed foil the rotation rate of the rotatin cutting knife oan be kept lower than the rate at which the foil is drawn off and fed to the apparatus of the invention for cutting foil ribbons destined to constitute the wefts in a foil ribbon fabric characterised by a table for receiving the foil roll and a knife arranged peripherally of the foil roll and movable in radial said table and knife being rotatable with respect to eaoh other and relative to each other of said foil as well as by a device for the cut foil process of the invention and the plant for carrying out this process are illustrated in more detail in the 1 is a diagrammatical view of an apparatus according to the where the warp ribbons cut from a stretched while the weft ribbons are cut from a foil and temporarily collected on 1a shows a modified part of this 2 is a view of apparatus according to the invention where the warp ribbons as well as the weft ribbons are out from monoaxially stretched 3 shows the fixing device for a continuous also diagramma 4 shows a lateral view of a machine for cutting weft ribbons from a roll of 5 a top view onto the receiving table of the machine according to and illustrates in plan View a lifting device for the receiving Humeral 1 in 1 denotes an extruder for extruding thermoplastic The extruder can have a slit or ring Humeral 2 denotes a device for producing flat foil a The apparatus part designated by in 1a is different from the device for producing a flat being a blowing which is used for producing a tubular foil 5 is a roller block having sleeves whereon the foil can be This rolle block of not absolutely the foil or which are numbered could also be directly to the subsequent These subsequent devices are a cutting device 6 wherein the foil is cut to a device comprising two stretching means 7 and a heat supply which oan either be hot water bath or a ho air The stretching means 7 comprise rollers running at different which exten the in desired Following stretching the fixing device 9 is comprising another heat supply means the ribbons which have been stretched and and which designated by are wound up on bobbins only a number of which shown in the 100 to 200 bobbins ar These bobbins are then onto shuttle spools and fed to the loom The warp of the invention are produced A or foil is produced on extruder which is similar to the extrude by means of the device for produolng a flat o by of a blowing device according to said foil is then the stretching and fixing in the monoaxlally at a ratio of 1 t 4 to 1 The construction and of the atretcbing device be described detail in connection After having passed through the stretching the monoaxlall stretched is again fed a roller block 19 with is similar to the roller and subsequently the foil is cut to ribbons means of cutting device said ribbons being immediately to the loom as foil ribbon fabric leaving the loom 14 can be used fo or the e fabric out for its high The preferred of the ie illustrated in In this the warp ribbons as well as the weft ribbone are cut from moaoaxiall stretched Numeral 1a denotes an extruder for extruding thermoplastic said extruder being to the extruder in 2a is a device fo producing fla foil a Instead of the a device to 1a may be Following the device for producing the fla the stretching device 18a for etretohlng the ie This followed by a roller block 19a having sleeves and whereon stretched when using the double foils are the roller block 19a the foil ie to the cutting device 20 where it is cut ribbons o desired The cutting device consist of a row of stationary knives arranged in The cut ribbons are fed as warps to the loom or weaving to the described device for producing the warp is the device for producing the weft again comprising an designated by a device 2b for producing a flat a stretching and fixing 18b and a roller E lally foil stock is produced also fo the weft ribbons and collected on the sleeves 4V of the roller block One sleeve 4b having the stretched foil wound up thereon is then traiiaported to the cutting 17 which be decribed in connection with 4 to cutting device weft ribbons 100 are fed to the loom or weaving machine where they are woven to a ribbon The fabric leaving the can be ueed for purposes where a very high strength io The stretching and device for foil stock illustrated in which device in producing warp ribbons ae well as weft comprises casing 21 and two successively arranged rolls 22 and stretching rolls 2 are allocated to the heating roll 2 eaid rolls being adapted to swung clockwise to the position shown in broken pair of stretching rolls is adjacent to the next roll 26 an is again adapted be clockwise to the position shown in broken evident from the ther a small distance between the stretching roll and stretching roll the stretching process place in that foil entering the according to 3 is heated o the rolls 22 and stretched between the pairs of stretching rolls and and drawn off by way of the roll During stretching between the pairs of stretching rolls and the foil does not alter its but only its extension ratio preferably 1 4 to 1 Followin the last roll 26 a device comprising two rolls 28 moving at different While the roll 27 runs at the same speed as the roll the roll 28 moves the fixing Numerals 29 and 30 denote cooling cutting device for the wef ribbons is illustrated in more detail in 4 to The cutting device comprises a lifting table spindle reoeiving a roll of foil 33 being rigidly connected foil roll with its sleeve is from the roller block 19b to the spindle lifting table is and lowerably supported on three spindles in vertical direction is effected by the or via the gears the ends of the screw spindles 34 connected by a ring 37 A plurality of rollere 39 horizontally supported on said ring 37 by means of vertical A revolving 40 with the rollers 39 and is driven by the motor 41 via the gear transmission The cutting device 43 is fastened revolvin ring 40 and comprises following as evident from 4 and An arm 45 slewably supported o an axle knife carriers 46 and a knife 47 are arranged on the end of the arm slewable arm 45 is driven by the 49 via a gear a feeler 50 is fastened to th axle 44 by means of a hollow shaft o the said feeler being adapted to or magnetically pressed by a means 52 against a step 51 the step forme when the foil ribbon as will be described yarn drawing device is mounted on 53 above the table d the cutting Said drawing device comprises rollers one of which is and rollers 57 and a revolving chain or rope drive and a device according to 6 in the following ways After the roll of 33 been set upon the spindle 32 of the the knife 47 positioned on the margin of the roll and under pressure by of the motor 49 and the gear cutting device with the ring 40 made to rotate peripherally around the foil roll the directio of arrow A that the knife cute through several foil layere at a 60 gripe outer end o the out ribbon and draws i off overhead of the foil roll direction of the foil ribbon is opposite to the direction of arrow indicated by arrow in When the knife has through all layers the foil roll and the sleeve core of the foil corresponding a certain position of the feeler the cutting device arm 45 the feeler move to thei initial position and the lifting lifts the table with foil roll in accordance the ribbon same cutting and off of the cut is interruption in the drawing off of the cut ribbons should the tonge 60 are eet in motion a short while before the ribbon completely run off that the end of the old the beginning of the new ribbon overlap for a ehort As indicated in 4 at the foil roll 33 along a small vertical zone eo that the front end of a slice out cut of the foil which taken up by the tonge will be joined to the end of the previous ribbon 100 is now fed to the or ae shown in and is interwoven with the warp A preferred process for producing foil ribbon fabrioe according to the comprises the warp ribbons to the loom in two or more layere end weaving them with the weft Λ method of producing foil has been mentioned in connection with when a tubular foil produced for a stock Said tubular foil le stretched and through both It ie also to feed three or even more stretched foils collected on foil rolls arranged by side or one after the in superposed relationship first to the cutting device and to the According to these embodiments with or warp foil ribbon fabrics having a high tensile strength longitudinal direction the rigidity of the wef ribbons is ensured by ribbons lying in superposed insufficientOCRQuality

Claims (1)

1. A process for producing foil ribbon fabrics on a weaving as a ribbons cut from foil and continuously fed to said device as warp weft in tha at least the foil ribbone constituting said warp elements are out from monoaxially stretched process according to claim characterized tha both the warp and weft constituting foil ribbons are cut from monoaxially stretched A according to claim characterized in that the weft constituting foil ribbons are made by ing peripheral parallel cute to a stretched foil wound to a the distance between corresponding to the desired width of said ribbons and the depth of each cut extending through several foil and that said foil ribbons are continuousl drawn off during cutting and fed to weaving process according to characterized that the warp constituting are out from monoaxially stretched foils in two or more layers and fed to the weaving device in superposed Apparatus for cutting destined to consti weft of a foil ribbon fabric out of a roll of characterised by a table adapted to support the foil a knife arranged peripherally of foil and in radial said table and aaid knife being relative to each other and relative to other the direction the foil roll and a device for aaid cut foil Λ for producing foil ribbon substantially ae herein described with reference to the Apparatus for cutting foil substan as herein described reference to 4 to 6 of the dr A foil ribbon fabric obtaine by the process ing any one of claims 1 to 4 Box Tel vi v Attorneys for Applicant insufficientOCRQuality