CN85104384A - Quadrature is spread repeatedly method and machine for cross-laying on the plastics adhesive-bonded fabric - Google Patents

Abstract

The present invention is a kind of forming method of netted plastic fiber adhesive-bonded fabric and the machine for cross-laying of implementing this forming method.The forming method of existing netted plastic fiber adhesive-bonded fabric has plastic flat fiber to intersect compound with binding agent, or forward compound with plastic flat fiber and netted tunic, the scope of application, the technological forming method of polyolefin plastics there are shortcomings such as the factor of complexity, moulding mutual restriction is many.The present invention is an independent operation for the netted tunic moulding of plastic optical fibre, and the money fibrous web-like tunic of moulding that makes carries out drawing-off and compound in length and breadth by machine for cross-laying, makes each netted plastic fiber adhesive-bonded fabric to the hot strength unanimity.

Description

Quadrature is spread repeatedly method and machine for cross-laying on the plastics adhesive-bonded fabric

The present invention is the improvement of plastics adhesive-bonded fabric quadrature being spread repeatedly method and machine for cross-laying.

Plastics adhesive-bonded fabric of the present invention is meant to be respectively through, latitude with stretched plastic flat silk screen and carries out repeatedly bonding the making in back of quadrature shop, right angle that it is different from the fiber is the nonwoven or the adhesive-bonded fabric of raw material.

The used crossing net of plastics adhesive-bonded fabric is to be raw material with polyolefin (polyethylene, polypropylene) plastics etc., can certainly be other plastic raw materials.Owing to, make the molecular link section of its high polymer make directed proper alignment along bearing of trend to drawing-off to 6～10 of plastics times, thus the attraction between the molecule increase greatly, thereby the tensile strength of crossing net has been improved widely.

The manufacturing technology of existing plastics adhesive-bonded fabric is studied the longitude and latitude crossing at right angle unit mahine of finishing in 1975 for Japan's (strain) Process Technology of Polymer, makes the plastics adhesive-bonded fabric that name is called SOF group cloth.With the similar technology of SOF be Japan special permission 835956(S, 51,11,30) fixing flat filament arrangement method continuously; Japan special permission 956336(S, 54,5,31) manufacturing of the longitude and latitude of wide cut flat filament intersection cloth body, the basic skills of its technology is in the process that vertically wire rod moves continuously, supply with horizontal wire rod with widthwise, with the corresponding length of vertical wire width on cut off, on the vertical money material that moves seamlessly, combined crosswise continuously.Vertical wire rod of its conduct or horizontal wire rod can be the fleece of the mesh structure of wide cut stretched PTFE film production, also can be the narrow extension flat filament of various organic or inorganic fibers productions.Wherein realize that with flat filament the process of above-mentioned manufacture method is: plastics are extruded blown film by extruder, make the tubular film through the air cooling, flatten after film splitter shreds, again with the heating roller, extension apparatus extends, the heat treatment rolling forms flat filament, then the flat filament with a part of extend through is organized into cylindric, and in moving process, have from the periphery that is arranged on the cylinder center position in the rotating disc of aperture of certain intervals, rely on action of centrifugal force rotary spraying hot-melt adhesive on the flat filament that is arranged in cylinder constantly, it is netted that flat filament is sticked into, and is fixed into the plane pattern through flattening.This flat filament of bonding agent that has is as horizontal wire rod, be in traverse cycle on the combined crosswise machine and doing the running of moving vertically and be with, constantly the horizontal flat filament that cuts off is lifted, the conveyer belt that speckles with viscous liquid by the surface adsorbs liftoff the delivering on the vertical flat filament that moves continuously of horizontal flat filament short distance and carries out combined crosswise, and heating makes that flat filament is bonding in length and breadth then.And stick in viscosity roll body on the horizontal flat filament through cleaning, after the drying, carry out heat bonding again.Its method of operating is trouble, and viscous liquid also is a kind of waste, and device therefor is also many.

China is domestic to have the stenter of the horizontal expanding of the Jia Xingshi of Zhejiang Province plastics three station-services that the plastic flat silk screen is carried out horizontal hot-stretch, the typing back is as horizontal flat silk screen, again with make the plastics silk that warp-wise arranges in advance and carry out compound in the same way, with the bonding plastics adhesive-bonded fabric of making of adhesive, in fact this method is to the improvement of Japanese SOF group cloth technology, has realized one-step method production.Although both at home and abroad to intersecting existing report of compound plastics adhesive-bonded fabric forming method and equipment and use, but because technical process and material pattern is different, as structure difference with silk, wherein lamination need be coated with before compound and add adhesive etc., especially relatively poor to plastics for the polyolefin plastics adhesion strength, and this plastics adhesive-bonded fabric can not use separately, can only be as the base material of composite.The technical process more complicated of prior art, the frame for movement of use are also just inevitable complicated, and investment is big in addition simultaneously, device takes up room greatly, the mutual restriction factor of moulding is many, operant level requires shortcomings such as height, cost height.

Purpose of the present invention is exactly that the quadrature of plastics adhesive-bonded fabric shop is repeatedly proposed that be suitable for, new more forming method and the machine for cross-laying device of simple in structure, the flexible operation created for implementation method.

The present invention finishes above-mentioned purpose by following method: the two kinds of polyolefin plastics of high low-density with high and low fusing point are extruded by extruder separately respectively, form compound periosteum or flat film by a coextrusion head then, through cooling, cutting, stretch and make and have cancellated plastic flat silk screen, obtain the reel of flat silk screen through rolling.Above-mentioned plastic flat silk screen reel by vertical unwinding device and horizontal unwinding device loose winding, flattens plastic flat silk screen (calling flat silk screen in the following text) through thermal finalization respectively, enters the traction of chill roll and a pair of conveying roller, output thereafter.This moment, the flat silk screen of output made low melting point one face up longitudinally, horizontal low-melting one side will be down, vertical flat silk screen is advanced along the traffic direction of machine continuously, after perpendicular horizontal flat silk screen is held the device clamping, it is online to be drawn to vertical flat filament, constantly cut off continuously simultaneously, it is online constantly to drop on vertical flat filament, finishes repeatedly operation of quadrature shop.Laterally spread continuity repeatedly by test for assurance, and the laminated unlikely drift that is in operation in horizontal shop that the shop is changed, so when taking the shop repeatedly, there is the overlap joint of 3～5mm every section horizontal flat silk screen joint, the repeatedly good flat silk screen of double-basis in shop that intersects clads with plain cloth, make the fusing of low melting point face and bonding through hot-rolling heating, can batch after the cooling becomes reel plastics adhesive-bonded fabric, contrast common plastics weaving has been simplified numerous and diverse technology and equipment that the whole weft knitting of warping is knitted greatly, and the SOF group cloth technology of ratio Japan also will save the warping of anchoring filament, spray glue, stick with paste cloth, the branch silk of flat filament, rolling, complicated procedures of forming such as the coordination arrangement that unreels, what above-mentioned again technical process was used is flat silk screen, thereby provides condition for the simplification of the production equipment of plastics adhesive-bonded fabric.The flat silk screen of reel unreels on the unwinding device that tension force control is arranged, and launches original uneven flat silk screen, after hot-rolling is put in order, cools off in carrying running.The power that unreels, puts in order flat silk screen is the traction of flat silk screen when entering a pair of conveying roller, and flat silk screen is sent.Laterally pinching, the shop repeatedly, in the device that cuts off, with chain transmit and with the equidistant clamper of vertical flat silk screen width, when the flat silk screen of first clamper clamping is drawn to the opposite side of vertical flat silk screen, second clamper run to the input of horizontal flat silk screen traction, the electric heat cutter instantaneous time cuts off horizontal flat silk screen, the input of the flat silk screen after will cutting off simultaneously is clamped in second clamper, first clamper unclamps flat silk screen in the same time, finished once the shop repeatedly, promptly horizontal flat silk screen is cut off and drops on that vertical flat filament of operation is online forward continuously.For keeping repeatedly smooth to the shop of flat silk screen in length and breadth, laterally spreading the Tewo position, be provided with the plane liner plate at vertical flat filament face off the net, be behind the repeatedly good intersection double-layer flat silk screen out-of-plane liner plate in shop that the plain cloth cladding enters press bonding roller, hot-rolling gives bonding, make the flat silk screen of the longitude and latitude location that tentatively bondd, thereafter again through heat bonding cylinder heating make the low melting point one side the plastics fusion and bonded to each other fully, trim through the cooling of cooling cylinder, edge-trimming cutter again, by devices for taking-up the plastics adhesive-bonded fabric is rolled into the cylinder finished product at last.

Quadrature of the present invention is spread repeatedly the quadrature of forming method and the domestic and international existing plastics adhesive-bonded fabric of machine for cross-laying contrast and is spread repeatedly technology, because no necessary adhesive applies, flat silk screen itself promptly is the conveyer that the compound flat silk screen that becomes one does not need the gluing of assisting, also not the cleaning and the dry run of viscous liquid.Simple in structure, so just there is cost low, the benefit that takes up room and save.Machine for cross-laying with the system flat silk screen unit work respectively, have a style of one's own, thus two operations be not subjected to mutually to restrict each other and influence, but according to specific time and site is provided with flexibly again, is convenient to operational administrative.

Fig. 1 is the repeatedly technical process schematic diagram of moulding of plastics adhesive-bonded fabric quadrature shop.1, vertical flat silk screen 2, horizontal flat silk screen 3, hot-rolling arrangement 4, cooling 5, traction 6, cut off 7, the shop repeatedly 8, plain cloth cladding 9, hot-rolling fusion 10, cooling 11, cut edge 12, batch.

Fig. 2 is vertical schematic diagram of machine for cross-laying.30, deflector roll 13, hot-leveling roller 14, unwinding device 15, clip conveying mechanism 16, devices for taking-up 17, plane liner plate 18, chill roll 19, plain cloth 20, insertion and thermal cutting mechanism 21, carry-over pinch rolls 22, give heat bonding roller 23, heat bonding roller 24, hold-down roller 25, chill roll 26, edge-trimming cutter 27, carry-over pinch rolls 28, deflector roll 29, press bonding roller.

Fig. 3 is the horizontal schematic diagram of machine for cross-laying.14, unwinding device 30, deflector roll 13, hot-leveling roller 18, chill roll 21, carry-over pinch rolls 31, plane liner plate 32, charged hot knife and insertion device 33, cam 34, chain conveyer 35, back-moving spring 36, movable clip 37, spring 38, insertion plate 39, electric heat cutter 40, clip 41, pine folder push rod.

Fig. 4 is unwinding device 45, frame 42, brake 43, flat silk screen 44, pivoted arm.

Fig. 5 is a plastics adhesive-bonded fabric sample

By plastics adhesive-bonded fabric quadrature of the present invention shop repeatedly forming method and machine for cross-laying device optimum implementation as shown in Figure 1, Manufactured sample such as Fig. 5.

The primary raw material of this sample is, GF7750 etc. is produced in Liaoyang, wire drawing level low-pressure polyethylene, leading indicator is: melt index MI:0.35～1.0, density p: 0.945～0.96, the composite adhered layer material of low melting point is a polyethylene from high pressure process, leading indicator is: melt index MI3～5, density p: 0.905～0.921, low-pressure polyethylene is 6: 1 with the ratio of polyethylene from high pressure process consumption.Two kinds of polyethylene are extruded by extruder separately respectively, collect in the head of coextrusion, and what extrude from head is to be the flat film of composite plastic, through cooling, prestretched, cutting, multistage stretching again, finally coil into the flat silk screen of reel.

The flat silk screen of reel be loaded on respectively machine for cross-laying in length and breadth to unwinding device such as Fig. 4, the flat silk screen of rolling (43) rotates by pivoted arm (44) and can take turns uninterruptedly to unreel, reduced nonproductive time, improved operating rate, owing on the spool brake (42) is arranged, so can control the speed when unreeling by vary in diameter and inertia effects, keep in the flat filament network operation steadily.Flat silk screen mesohigh polyethylene surface layer when unreeling,, thinks that compound tense provides bond condition down along laterally the time up in the time of longitudinally, thus shown in Fig. 2,3 on the unwinding device trend of flat filament valve according to shop direction repeatedly different and difference.Flat silk screen as Fig. 2 unwinding device (14) under 100～110 ℃ temperature carries out heat arrangement through the stable hot-leveling roller (13) that enters of deflector roll (30) once, walk around chill roll (18) after smooth to carry-over pinch rolls (21), again by the carry-over pinch rolls running under power and send chilled smooth flat silk screen.Longitudinally promptly enter press bonding roller (29) through the plane of machine for cross-laying liner plate successively; Horizontal is promptly drawn by clip (40) clamping on the chain conveyer (34) as Fig. 3, carry out quadrature with the flat silk screen that moves continuously longitudinally, the shop repeatedly, clip (40) is behind terminal point, drive the push rod (32) that cam (33) acts on charged hot knife, cut off horizontal flat silk screen on the one hand, simultaneously the head of next section is clamped in second clip (40), the clip of front (40) is subjected to the effect of push rod (41) and unclamps the flat silk screen that traction is come, this moment cut horizontal flat silk screen to fall the flat filament that vertically moves online, finish the quadrature shop repeatedly.Laterally spread the overlap joint that 3-5mm is repeatedly arranged with last shop flat silk screen repeatedly for second.Entering press bonding roller (29) in proper order as Fig. 2 shop flat silk screen after repeatedly gives heat bonding roller (22) and gives bonding under 110～114 ℃ of temperature, under 115～118 ℃ temperature, heat fully bonding through heat bonding roller (23) again, enter then chill roll (25) finished quadrature shop repeatedly and adhesion technique made the plastics adhesive-bonded fabric, cut edge through edge-trimming cutter again and put in order, on the one hand the plastics adhesive-bonded fabric is drawn through carry-over pinch rolls (27), send finished product on the other hand by devices for taking-up (16), be rolled into plastics adhesive-bonded fabric reel and send.The wide 1100mm of products obtained therefrom, thick 0.07mm, about 50 grams of every weight per square meter.

Claims (4)

1, a kind of is the plastic flat silk by material, the plastics adhesive-bonded fabric that after quadrature heat in right angle is compound, forms, its quadrature composite forming method, it is characterized in that quadrature shop repeatedly method be directly over the plastic flat silk of vertically advancing continuously by perpendicular to horizontal longitudinally, same plastic flat silk screen is carried out the shop, limit continuously repeatedly cuts off on the limit.

2,, it is characterized in that plastic foil is the composite plastic film that contains self hot melt adhesive plastic layer by the described forming method of claim 1.

3, by claim 1,2 described forming methods, it is characterized in that at the composite plastic flat filament of vertically advancing continuously online, when changing the flat silk screen of composite plastic by its vertical horizontal shop, every section overlap joint that 3～5mm is all arranged.

4, quadrature is spread the repeatedly used machine for cross-laying of method on the plastics adhesive-bonded fabric, it is characterized in that having the clamper device of the spring structure that transmits with chain, and this clamper device can automatically be spread continuously repeatedly and cut off.

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