CN1559782A - Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager - Google Patents

Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager Download PDF

Info

Publication number
CN1559782A
CN1559782A CNA2004100219142A CN200410021914A CN1559782A CN 1559782 A CN1559782 A CN 1559782A CN A2004100219142 A CNA2004100219142 A CN A2004100219142A CN 200410021914 A CN200410021914 A CN 200410021914A CN 1559782 A CN1559782 A CN 1559782A
Authority
CN
China
Prior art keywords
composite membrane
film
stretching
compound
stretch
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.)
Granted
Application number
CNA2004100219142A
Other languages
Chinese (zh)
Other versions
CN1311960C (en
Inventor
甘国工
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNB2004100219142A priority Critical patent/CN1311960C/en
Publication of CN1559782A publication Critical patent/CN1559782A/en
Application granted granted Critical
Publication of CN1311960C publication Critical patent/CN1311960C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

A method for continuously producing the orthongonal combined bidirectional stretch resistant,cylindrical film with heat-sealed layer includes such steps as continuously producing the composite unidirectional stretch film with a heat-sealed layer, which is used as internal layer, and the unidirectional stretch filmas external layer, feeding the internal film in the cavity of external film, unidirectional stretch of external film for fixing its shape, heating for combining internal and external films to gether, and cooling.

Description

Produce method and the device that the compound bidirectional stretch of quadrature has hot sealing layer tubular film continuously
Technical field:
The present invention is relevant with the tear-resistant laminated film that monodirectional tension film quadrature composite combined is formed bidirectional stretch, the manufacture method of hot sealing layer tubular film is arranged and install relevant with the continuous compound bidirectional stretch of quadrature of producing especially.
Background technology:
Plastics and coextrusion composite membrane have been used quite general as the base material and the geo-membrane material of packaging material, for the waste that reduces resource with widen the range of application of plastic foil at packing and earthwork engineering, people have utilized tensile strength after the plastic foil hot-stretch orientation to increase the characteristics of this macromolecular material molecule stretching orientation of 5 to 15 times, the product that provides many stretched plastic films to make, polyethylene as simple tension, polypropylene packaging film, in order to as packing with tie up purposes, known have a biaxial tension diaphragm, the compound film sheet that biaxial tension diaphragm and unstretched plastics and plastic film are composited, the simple tension diaphragm, the compound film sheet that simple tension diaphragm and unstretched plastics and plastic film are composited.Biaxial stretching film is extrudate flow Yangjing diaphragm or extrudes blowfilm shaping tubular diaphragm and divide macromolecule that other hot-stretch makes diaphragm through, latitude both direction generation molecular orientation effect and arrangement through institute's external force of executing to warp-wise, broadwise below the above viscous state temperature of glassy state temperature, thereby produce the stretching resistance of both direction, the tensile strength of both direction is all higher 5 to 10 times than the plastic film of the same basal area that does not stretch, and we can obtain the more not better base material of stretched plastic diaphragm performance of bidirectional stretch intensity to utilize this characteristic and processing technology.This film is widely used in food, electronic publication and clothing etc., but as the packing base material, it has a fatal weakness, it is exactly counter stress mouth tear resistance extreme difference, promptly in case there is a stress to produce, even a little pin hole begins to be easy to be torn from this hole, the packaging field and the geotechnological field that can not be used for tear-proof or easily produce the stress mouth.
The simple tension diaphragm is being at warp-wise or broadwise simple tension diaphragm more than the glassy state temperature, below the viscous state temperature after being into diaphragm, the macromolecule that makes diaphragm through or direction of latitude produce orientation and arrangement and produce advantages of higher tensile strength on the direction, the tensile strength of this draw direction is higher 5 to 15 times with the diaphragm of basal area than not stretching, but the tensile strength on the direction that does not stretch is more much lower with the diaphragm of basal area than not stretching, and more easily tear, and make this film tear resistance poor.
In order to prevent to adopt the simple tension diaphragm to make a direction that tensile strength be arranged, another direction does not have tensile strength fully and easily tears, people utilize plastics to make packing and geotextiles, have to reach the two-way tensile strength and tear-resistant that all has with fillet braiding on warp, latitude both direction of simple tension, but braid is if want waterproof, antiseep, also must be through a compound skim, but can have aforesaid recycling and environmental issue.
The problem that occurs when overcoming the application that aforementioned bidirectional stretch stretches diaphragm and simple tension diaphragm, the structural composite sheet of having invented above-mentioned known several types.It is the composite plastic film sheet that biaxial stretching film and unstretched plastics and plastic film are composited.
Two kinds of composite plastic film sheets that this is main, easily tear weakness with the tear resistance difference in order to overcome the stress mouth, it is compound with it to have increased unstretched plastics and composite plastic film sheet, design is respectively more even to intensity by unstretching film, there is certain lear energy to remedy the defective of biaxial tension diaphragm and simple tension diaphragm, in the application of reality, also obtained some actual effects, but also do not reached requirement far away for demanding packing of load bearing requirements height, tensile strength and tear-proof and geotechnological application.
It is a kind of by warp, the compound bidirectional tensile plastic composite film sheet of latitude simple tension plastic film that the patent No. 97244530 provides.This compound film sheet is by warp, the compound bidirectional stretch compound film sheet of latitude simple tension plastic film, it is characterized in that the plastic film of one deck warp direction stretching is at least arranged in the described compound film sheet, at least the plastic film of one deck broadwise stretching has tack coat between the plastic film that the plastic film of warp direction stretching and broadwise stretch.This compound film sheet has adopted the plastic film of warp direction stretching and the plastic film that broadwise stretches respectively at warp-wise and broadwise, therefore the tensile strength of two directions all has separately the simple tension film of direction bear respectively, because of the simple tension film itself has intensity the highest in the same film, therefore each to stretching resistance reached best fit, also be the maximum tensile strength.This two-layerly is combined as a whole with tack coat, if produce stress mouth or breach, because of the use of tack coat, breach tear by through, the two-layer quadrature of latitude promptly 90 ° of compound stretched film stop, and improved tear resistance greatly.This film can also according to service condition to the tensile strength through, latitude both direction require to increase one deck warp direction stretching film or broadwise stretched film and the compound more performance that gets.This film is used to pack, paulin, geomembrane have good performance and purposes.But, it is more very difficult that fusion between simple tension film and the biaxial stretching film connects, will make the film of contact be molten because want fusion to connect, and just to have destroyed the stretch orientation macromolecule and arranged orientation and intensity, and can reduce that this will seal, the tensile strength values of interface.So for the higher packaging bag of ask for something seal and automatic packaging line on seal or geomembrane connect the width of cloth, can only adopt binding agent bonding, limited the range of application of this film, for this reason, I have invented a kind of bidirectional stretch intensity height in 00113098.6 patent, can do packing, paulin, materials such as geomembrane, the bidirectional tensile plastic composite film sheet of the heat sealability excellence that the scope of application is wide, this compound film sheet is at warp, all brought into play plastics simple tension macromolecule on the latitude both direction and aligned back tensile strength than the stretched plastic diaphragm is not high 5 to 15 times, bidirectional stretch intensity height, the tearing toughness height, fusion, the heat sealability excellence, the scope of application is wide, can be used as packaging bag, geomembrane, materials such as paulin, greatly reduce cost, more conveniently seal and be connected, baling line is easily realized automation, the recyclable utilization of product, it is the environmental protection type packing material, in addition, I have invented a kind of " production method and the device of bidirectional stretch tubular compound film sheet peace film compound film sheet " and have produced this compound film sheet specially in 00113159.1 patent, this technology has been utilized the multiple film sizing mechanism of hot case fit body instant heating case, and the technology of the storing hollow shaft mechanism of the promptly interior complex membrane mechanism of whole cloth mechanism, this patent is the compound of film and film, particularly the simple tension film is made outer membrane, with coextrusion the compound of the film of making inner layer film after the film drawn orientation of adhesive layer and film arranged, though adopted coextrusion to have the binding agent tunic to make interior pad pasting, carry out the compound of outer membrane and inner layer film, but still employing is the method and the device of hot case fit body of class formula and the whole cloth mechanism of class formula, the problem of this scheme is that producing of outer membrane and inner layer film and outer membrane carried out with compound the separating of inner layer film, that is to say one group of device fabrication inner layer film and rolling, another group device fabrication outer membrane and rolling, at last outer membrane is put into complex structure with inner layer film and heats compound on the huge interior complex membrane mechanism, this interrupted production method is not only at the bottom of the efficient, and quality instability, do not reach the technological requirement of multiple film, device therefor is complicated and huge, floor space is also big, and is very uneconomical.
Summary of the invention:
The objective of the invention is in order to provide a kind of quadrature Composite Double of producing continuously high and thermal bonding is good, be beneficial to environmental protection and be convenient to the method for the tubular film that hot sealing layer is arranged of suitability for industrialized production to tensile strength.Another object of the present invention is in order to provide a kind of continuous production quadrature the compound device that hot sealing layer tubular film is arranged for bidirectional stretch.
The object of the present invention is achieved like this:
The present invention produces the compound bidirectional stretch of quadrature continuously has the method step of hot sealing layer tubular film as follows:
(1) utilizes at least one plastic extruder, adopt two-layerly or three-layer co-extruded to go out die head and extrude two-layerly or three-layer co-extruded to go out compound preparation and be used for the periosteum base that warp direction stretching or broadwise stretch; Between extrusion die and periosteum base carry-over pinch rolls, utilize and to make the periosteum base carry out rubbing rotation and cooling and shaping to the cooling body of periosteum base vacuum suction and/or blowing attaching rubbing rotation; Being provided with heating arrangements between carry-over pinch rolls and stretching and traction roller heats the periosteum base, the viscous state temperature temperature range following, that the glassy state temperature is above that makes the periosteum base reach its material is carried out the inflation stretching of broadwise (laterally) several times diameter or the stretching of warp-wise (vertically) several times length to it, so that it produces the tensile strength of several times for stretching thing not along the orientation of draw direction generation polymer macromolecule; Make simple tension composite membrane that inner surface has a hot sealing layer internal layer thus as the compound tubular film that hot sealing layer is arranged for bidirectional stretch, internal layer simple tension composite membrane produce and outer the producing of composite membrane of next step is continuously to produce synchronously equally;
(2) in the simple tension composite membrane of successively producing as internal layer, utilize at least one extruder, adopt that the individual layer extrusion die is two-layer or three-layer co-extruded to be gone out die head and extrude that individual layer is two-layer or three-layer co-extruded to be gone out compound preparation and be used for the periosteum base that warp direction stretching or broadwise stretch; Between extrusion die and periosteum base carry-over pinch rolls, utilize and to carry out rubbing rotation and cooling and shaping to the cooling body of periosteum base vacuum suction and/or blowing attaching rubbing rotation to the periosteum base; Being provided with heating arrangements between carry-over pinch rolls and stretching and traction roller heats the periosteum base, the periosteum base is reached below the viscous state temperature of its material, the above temperature range of glassy state temperature is stretched by the inflation of broadwise (laterally) several times diameter under inflation or is inflating under the support by the stretching of warp-wise (vertically) several times length, so that it produces the orientation of polymer macromolecule and produces the tensile strength of several times for stretching thing not along draw direction, the simple tension film that makes inner surface or outer surface thus and have hot sealing layer is the outer membrane as the compound tubular film that hot sealing layer is arranged for bidirectional stretch, the film of herein producing is continuously to produce synchronously with producing equally of internal layer composite membrane, one hollow siphunculus is arranged between extrusion die and stretching and traction roller, one is connected with the extruded film head, the carry-over pinch rolls clamping that is stretched, this pipe is hollow can produce UNICOM of mechanism with the extrusion die external world and internal layer composite membrane, and be coated on wherein by the outer composite membrane of this operation, with step (1) make the warp direction stretching film got or broadwise stretching stretched film as the internal layer composite membrane by being connected in above-mentioned (2) method with extrusion die, the passage of hollow siphunculus of carry-over pinch rolls clamping of being stretched is sent into the outer membrane inner chamber continuously, the outer membrane coverlet to stretch and typing after, the internal layer composite membrane stretch out the hollow siphunculus under the effect of heat treatment stretching and traction roller continuously will in, the synchronous clamping traction of outer membrane participates in the compound of ectonexine composite membrane, herein compound be the internal layer composite membrane when being the warp direction stretching film corresponding compound outer composite membrane be the broadwise stretched film, corresponding compound outer composite membrane was the warp direction stretching film when internal layer composite membrane was the broadwise stretched film, in, have with internal layer composite membrane or the compound adhesive layer of outer composite membrane coextrusion between the outer composite membrane, the heat-sealing tunic of the compound heat sealability excellence of coextrusion is arranged at the inner surface of internal layer composite membrane;
(3) between heat treatment stretching and traction roller and compound traction pressure roller, be provided with heating arrangements and cooling body, the internal layer composite membrane is got in continuous also synchronous drawing from hollow siphunculus passage when the heat treatment stretching and traction roller is drawn outer composite membrane, this two membranes is heated between heat treatment stretching and traction roller and compound traction pressure roller, inflation, the internal layer composite membrane is close to adventitia, adhesive layer between the two-layer composite membrane is in unformed shape because of the heating melting, the ectonexine composite membrane is pasted together, through the suitable temperature control cooling of cooling body, again through compound traction pressure roller to pressing, the ectonexine composite membrane is bonded together firmly the tubular film that hot sealing layer is arranged that becomes bidirectional stretch.This cooperates notes not using the needle tubing aerator easily in internal layer broadwise stretched film mechanism, because of the ectonexine compound tense if broken hole arranged, the inflation of compound working procedure can not be airtight, just have a strong impact on yield rate and production continuously, because skin is the warp direction stretching film, easy longitudinal cracking, produce broken hole, so the exhaust between the ectonexine breaks skin or adds the perverse outer exhaust of acupuncture roller pin in the time of can beginning, in order to make inside and outside laminating get togather, glue, can use the sizing grid, add far-infrared heater at grid.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, after the internal layer simple tension composite membrane of producing in (1) step collected with winder, by hollow siphunculus passage internal layer simple tension composite membrane is sent into the outer membrane inner chamber continuously with unreeling machine.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, internal layer composite membrane and outer composite membrane are after process warp direction stretching or broadwise stretching, after stretching and traction roller, be provided with the heat treatment stretching and traction roller, between two rollers, be provided with heating arrangements and cooling body, the internal layer composite membrane of drawn or outer composite membrane produced 0.5%～20% thermal contraction respectively and handle under the temperature that is higher than 5 ℃～20 ℃ of draft temperatures on its draw direction length, make its dimensionally stable through cooling body according to the suitable cooling and shaping of temperature requirement then, film is smooth.Control well simultaneously and can fully use its heat energy, can reduce to shorten thermal contraction and handle heating power and drying tunnel length, and make inside and outside layer compound tense internal layer also have sufficient heat.Be ptfe surface perhaps with the surface treatment of broadwise stretching and traction roller, can be to surperficial binding agent cooling, more can make full use of heat energy, but must be noted that pressure and the gap adjustment into problem of heat treatment station of exitting, steel pipe can not be used in the roller surface, certain elasticity.Because of heat treatment temperature is higher 10～15 ℃ than draft temperature, thermal contraction 0.5～10% just is full of gas, keep tubular all right, here preferably fully shrink, prevent from now on thermal deformation and contraction, prevent from especially may make the very out-of-flatness of film bag with the compound back redeformation of longitudinal stretching film.The most handy low-pressure hot wind circulation of the heater of heat treatment station, (also may not adding) EVA+LLDPE film of in the cooling of stretching station only need reach in the internal layer of multiple film 10% or LDPE film be not to sticking just passable, between 100～120 ℃, helping does not so need to be raised to 135 ℃～140 ℃ (HDPE material) or 155 ℃～165 ℃ (PP material) again from cooling off shape fully in heat treatment station, but prevent the carry-over pinch rolls after the heat treatment station and the outer EVA film roll banding of trilamellar membrane, carry-over pinch rolls with silica gel roller or the film temperature that reduces the carry-over pinch rolls place again below 100 ℃.Carry-over pinch rolls linear speed after the heat treatment station should be than the carry-over pinch rolls before the heat treatment station low 0.5%～10%, the heat treatment drying tunnel can be considered cylindrical shape, also can consider oblateness, and the former circulates easily by hot blast and circumference evenly distributes, the latter can go up lower leaf blowing and air draught, also even districution temperature.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, as the internal layer composite membrane of the tubular film that hot sealing layer is arranged of bidirectional stretch, outer composite membrane produce and inside and outside tunic compound can adopt respectively upwards to draw to follow the example of or draw downwards follow the example of or parallel drawing followed the example of making, and their combined method is produced.No matter the broadwise stretched film is at skin, still the warp direction stretching film is at skin, and the extrusion die of inner layer film and the type of cooling can be upward types, also can be to put down to blow formula, and also can be bottom blowing type.And outer membrane is because die head and traction nip rolls will be by the hollow pipes that can pass with inner layer film of clamping, as stainless steel tube, so generally only suitable upward type and the flat formula of blowing, for bottom blowing type, the extruder die head is in too high height, generally design, and can not produce outer membrane with the roller stretching with regard to bad layout.If inner layer film is a stretched film, can also adopt the roll-type pulling method to produce the warp direction stretching film, the warp direction stretching whole production line also can design by upward type, but equipment is higher than 11.5m, ordinary plant there is problem, in order to reduce device height, can be with a shelf, two heat treatment station allow film can pass heat treatment station up and down back and forth; Also the station of extruding, typing is shunk in stretching, heat treatment all can be designed to horizontally carry out on ground, and with compound be distributed as in the air vertical, batch from returning ground in the air the cooling back at last, but the horizontal baking oven of heat treatment contraction typing is bigger to the film circumference heating temperature difference.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, as the internal layer composite membrane of the tubular film that hot sealing layer is arranged of bidirectional stretch is that warp direction stretching film and material are when being low density polyethylene (LDPE) (LDPE) and two layers of composite construction of high density polyethylene (HDPE) (HDPE), it can be that roller clamping or the stretching of many group row's rollers are produced that the warp-wise of its film or broadwise stretching and thermal contraction are handled, cancellation drum type brake heat treatment drying tunnel, simplified apparatus.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, except that the internal layer composite membrane is the warp direction stretching film and is low density polyethylene (LDPE) (LDPE) and two layers of composite construction of high density polyethylene (HDPE) (HDPE) material are produced with roller clamping or many group row's roller drawing process, the warp direction stretching of remaining internal layer composite membrane and outer composite membrane or broadwise stretch to use with head and are connected, it is big or realize stretching under inflation is supported under the heated situation of film pipe that the gas tube that is pulled roller clamping sealing carries out inflation to the film pipe, or with the needle tubing aerator film pipe is carried out the big or inflation of inflation and support and under the heated situation of film pipe, realize down stretching, it is to rely on stretching and drawing to adjust its pressure and gap between roll-to-roll that inflation when thermal contraction is handled or inflation are supported, the gas of stretching station is put into thermal contraction to be handled station or with the needle tubing aerator its inflation or inflation support is realized, in, the compound station inflation inflation of outer composite membrane relies on the needle tubing aerator that the internal layer composite membrane is inflated and realizes, inflate available heavy caliber tracheae at the initial inflation of start and carry out.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, handle station at the warp direction stretching of internal layer composite membrane or the stretching station and the thermal contraction fixation thereof of broadwise stretching, stretching station that the warp direction stretching of outer composite membrane or broadwise stretch and thermal contraction fixation thereof are handled station, and in, in the compound station of the compound tubular film that hot sealing layer is arranged for bidirectional stretch of outer composite membrane, extexine at film does not have under the situation of adhesive layer, be provided with the sizing mechanism that hole or grid hole are arranged that can fully carry out heat exchange in stretching and compound periosteum periphery, to prevent that the periosteum diameter from enlarging arbitrarily and multiple film is pasted not strongly, the interlayer exhaust is insufficient.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, and the warp direction stretching of internal layer composite membrane, outer composite membrane or broadwise are drawn the thermal contraction fixation of station, internal layer composite membrane, outer composite membrane to handle station and the compound station of inside and outside layer composite membrane and be provided with cooling air mechanism and can carry out cooling and shaping by the technological temperature requirement to film.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, when producing internal layer or outer field broadwise stretched film or warp direction stretching film, in the horizontal broadwise of blowing when stretching, the speed that can set and regulate between the carry-over pinch rolls is poor, simultaneously film is carried out warp direction stretching, thereby obtain the stretched film that broadwise stretch orientation intensity is higher than the warp direction stretching directional intensity, and when warp direction stretching, under inflation supports, simultaneously film is carried out broadwise and stretch, thereby obtain the stretched film that the warp direction stretching directional intensity is higher than broadwise stretch orientation intensity.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, bidirectional stretch tubular composite membrane cut open can obtain flat diaphragm, if need the diaphragm of bidirectional stretch all to need hot sealing layer on the two sides, promptly when producing outer composite membrane at the polymer of outermost layer coextrusion one deck heat sealability excellence.
The above-mentioned compound bidirectional stretch of continuous production quadrature has the method for hot sealing layer tubular film, the broadwise stretched film can be designed to skin, the warp direction stretching film is designed to inner layer film, even tack coat and hot sealing layer also can design and 2 layers of co-extrusion of outer field broadwise film even 3 layers of co-extrusion form broadwise tensile layer/tack coats (or outer hot sealing layer/broadwise tensile layer/tack coat), the warp direction stretching film of internal layer is designed to two layers, be warp direction stretching layer/interior hot sealing layer, at this moment device and station are done slightly to change and both can be accomplished; Also the drawn film can be designed to skin, the broadwise stretched film is an internal layer, so the structure of at least four layers of composite membrane of conduct can have following several combination mode of film again:
Warp direction stretching film+adhesive layer/broadwise stretched film/hot sealing layer
Outer hot sealing layer/warp direction stretching film+adhesive layer/broadwise stretched film/hot sealing layer
Warp direction stretching film/adhesive layer+broadwise stretched film/hot sealing layer
Outer hot sealing layer/warp direction stretching film/adhesive layer+broadwise stretched film/hot sealing layer
Broadwise stretched film+adhesive layer/warp direction stretching film/hot sealing layer
Outer hot sealing layer/broadwise stretched film+adhesive layer/warp direction stretching film/hot sealing layer
Broadwise stretched film/adhesive layer+warp direction stretching film/hot sealing layer
Outer hot sealing layer/broadwise stretched film/adhesive layer+warp direction stretching film/hot sealing layer
And best fit should be 2 layers of co-extrusion+2 layer co-extrusion, or the combination of 3 layers of co-extrusion+individual layer, 3 layers of co-extrusion+individual layer combination cooperate with broadwise stretched film individual layer as adhesive layer/warp direction stretching film/interior hot sealing layer, 2 layers of co-extrusion+2 layer co-extrusion such as warp direction stretching film/interior hot sealing layer cooperate with broadwise stretched film/adhesive layer, also cooperate with warp direction stretching film/interior hot sealing layer such as broadwise stretched film/adhesive layer, also can 2 layers co-extrusion outer hot sealing layer/the broadwise stretched film cooperates with 3 layers of coextruding binders layer/warp direction stretching film/interior hot sealing layer is 5 layers; When 1 layer of outer stretched film was extruded for the warp direction stretching film, usefulness warp direction stretching film cooperated with adhesive layer/broadwise stretched film/interior hot sealing layer.Preferable with the warp direction stretching film in actual production as skin.
The polymer that broadwise stretched film in inside and outside layer composite membrane and warp direction stretching film adopt crosslinked with silicane, the present invention can produce compound by the monoway stretch-oriented crosslinkable polymer film of the monoway stretch-oriented crosslinkable polymer film of warp-wise and compound broadwise after inside and outside layer composite membrane is compound, under wet heat condition, form the compound bidirectional stretching-resisting polymer film of crosslinked with silicane again through the hydrolytic condensation cross-linking reaction, film is had outside the good tensile strength, also have better anti-stress mouth cracking performance and resistant to thermal aging and ultraviolet ray irradiation ageing properties.The tubular film that hot sealing layer is arranged of the bidirectional stretch after compound is cut open, both can have been obtained the flat diaphragm of the crosslinked with silicane that hot sealing layer is arranged of bidirectional stretch, can be advantageously applied to packing, geotechnological material.
The present invention produces the compound bidirectional stretch of quadrature continuously has the device of hot sealing layer tubular film to make mechanism by the internal layer composite membrane system of stretching of tubular film, outer composite membrane stretches and produces mechanism, via outer composite membrane stretch produce mechanism being connected with the external world and internal layer composite membrane drawing mechanism UNICOM with extrusion die, produced the carry-over pinch rolls clamping of mechanism and the hollow siphunculus that is coated by outer composite membrane by outer composite membrane stretching, can be stretched by outer composite membrane and produce heat treatment stretching and traction roller in the mechanism, and the compound mechanism that produces of ectonexine composite membrane forms together with the internal layer composite membrane passage of clamping of outer composite membrane continuous synchronization and traction; The internal layer composite membrane stretch produce mechanism by at least one plastic extruder, two-layerly or three-layer co-extruded go out die head, can attach the rubbing rotation cooling body of its rotation of rubbing and cooling periosteum base vacuum suction and/or blowing, to the heating temperature-controlling mechanism of periosteum base heating, periosteum is carried out that broadwise stretches or the nip rolls of warp direction stretching and the inflation mechanism of rotating mechanism and inflation are formed; Outer composite membrane stretch produce mechanism by at least one plastic extruder, individual layer or two-layer or three layers coextrusion die head, can attach the rubbing rotation cooling body of its rotation of rubbing and cooling to periosteum base vacuum suction and/or blowing, to the heating temperature-controlling mechanism of periosteum base heating, periosteum is carried out that broadwise stretches or the nip rolls of warp direction stretching and the inflation mechanism of transmission mechanism and inflation are formed; The compound mechanism that produces of ectonexine composite membrane forms the traction nip rolls of pressure and the inflation mechanism of transmission mechanism and inflation by carrying out to draw to the heating temperature-controlling mechanism of periosteum heating, to periosteum; The internal layer composite membrane stretches and to produce mechanism and outer composite membrane and stretch and produce mechanism by the thermal contraction fixation processing of being made up of heating temperature-controlling mechanism that is provided with between heat treatment stretching and traction roller and two carry-over pinch rolls and cooling temperature-controlling mechanism the stretching and traction roller of warp direction stretching after or after the carry-over pinch rolls that stretch of broadwise of mechanism.
The compound bidirectional stretch of above-mentioned continuous production quadrature have the internal layer composite membrane of tubular film in the device of hot sealing layer tubular film, outer composite membrane to stretch to produce in the mechanism its inflation mechanism have one is connected with extruder head and connects with extraneous source of the gas, one by the carry-over pinch rolls clamping of reeded rubber roll and the gas tube of sealing, by gas tube to film base pipe inflation or inflate support and stretch; Pressure and adjustable gaps between stretching and traction roller 38 pair rollers realize inflation or inflation support so that stretching station gas is put into thermal contraction fixation processing station tubular film, it is poor that mould pipe depanning carry-over pinch rolls 19 and stretching and traction roller 38 have 4 to 9 times speed, should note the self-locking property of mould pipe depanning carry-over pinch rolls 19, linear speed is 8.8 meters～20 meters, stretching and traction roller 38 should have with the same speed of broadwise drawing mechanism supporting, the highest should have 80 meters/minute linear speeds, use gear drive between the pair roller, preferably have 2 pairs of stretching and traction roller pulling force just enough.Mould pipe depanning carry-over pinch rolls 19 all should be the also supporting rubber roll that ring shaped slot is arranged of sealing of folder steel pipe with stretching and traction roller 38.Stretching and traction roller 38 is in heating during stretched film, because of there being air pressure to go ahead of the rest film had the broadwise stretching when preventing from film heat, should add the stainless steel cloth that prevents its broadwise stretching at periosteum.
The stainless steel tube that the passage of the inner layer film that broadwise stretches adopts, the back pair of rolls that can only arrive two pair rollers of stretching and traction roller 38 just finishes, the linear velocity of pulling out from pipe because of the broadwise film is involved by the clamping of thermal contraction rear haulage roller 41 and the warp direction stretching film after the thermal contraction synchronously, be compound station between 41 rollers and 45 rollers,, to internal layer broadwise film in ventilate make it distending and warp-wise film fit with hand-held needle tubing this moment.But behind the outer warp-wise film group warp direction stretching broadwise stretching resistance completely without, be easy to longitudinal cracking during inflation, thus this section should have prevent excessive inflation cause the warp-wise film vertically split can not be compound problem, should add stainless steel cloth in this section, ectonexine is close to, otherwise is had the bubble imbed.Internal layer was not easy to heat the EVA fusion was fitted with outer very much this moment, except will making it to be close to steel wire, except blowing circulating air, also should on the circumference between the 20-30mm outside cylindrical membrane, distribute and scribble the heating radiating board of Far-infrared Heating coating, internal layer is not only because of contacting is given birth to the heat welding that heats up, also will utilize far ultrared paint can produce interlayer and add that thermal effect makes it and outer fusion is fitted internal layer.Cooling vane will fully cool off composite membrane, but the main points of control are can not paste because of pressing with clamping of roller between the internal layer LDPE of broadwise stretched film, but the EVA between broadwise stretched film and the outer field warp direction stretching film fully pastes inside and outside tunic in the time of must reaching through traction pressure roller 45 crampings, so the temperature control to cool wind box is also very careful, traction pressure roller 45 rollers can design a pair of clamping pressure roller when if internally the cramping ability of outer membrane is not enough more.The composite membrane finished product batches can take the central coiling mode, but wishes to move continuously and at 80-100 rice/minute handled easily.
Warp-wise hot-stretch station is by mould pipe depanning carry-over pinch rolls 1 and stretching and traction roller 2 (2 pairs) and hot air circulation air channel, and prevent broadwise from expanding and the steel wire composition of generation broadwise stretching phenomenon, can design the increase cooling vane does not paste with the control composite bed yet, circulating air and cooling vane should be established a system specially in the outside, air channel, can strict temperature control, utilize at least one group of blowing ring and air draught ring hot blast to be made full use of and makes it circulation, in order to be heated up in the long space of 4.5m gradient is arranged, also can design two to three pairs of blowings and air draught EGR, stretching and traction roller 22 pairs of clampings stretchings possibly could stretch the particularly stretching of higher multiple to thick film.In order to make the pair of rolls can both normally also non-slip stretching, pass with gear mesh.Gear centre after the rubber roll wearing and tearing will make allowances apart from changing.Rubber roll is wanted hollow stainless steel tube of clamping, and internal layer broadwise stretched film is therefrom passed, and the stainless steel caliber is as far as possible little, and enough elasticity and processing leeway, wearing and tearing back are arranged too at the size bottom of the encapsulate thickness of carry-over pinch rolls rubber roll, sealing ring shaped slot.
The compound bidirectional stretch of above-mentioned continuous production quadrature has the device of hot sealing layer tubular film, before outer composite membrane stretches the coextrusion die head of producing mechanism, be provided with the internal layer composite membrane storage box with internal layer composite membrane passage UNICOM, send in the storage box certain-length and make a buffering to adapt to the speed of production of back operation so that the internal layer composite membrane that the body plan of internal layer composite membrane stretching preparing machine is got is pulled roller or wind.Or be provided with the retractable volume machine that internal layer is stretched that the composite membrane rolling is collected and internal layer simple tension composite membrane is sent into continuously the outer membrane inner chamber by hollow siphunculus passage.
The compound bidirectional stretch of above-mentioned continuous production quadrature has the device of hot sealing layer tubular film, the internal layer of tubular film, outer composite membrane stretch produce mechanism and in, outer composite membrane composite structure is stretching and compound periosteum periphery is provided with and prevents that the periosteum diameter from enlarging arbitrarily, in making, outer compound firm stickup, the abundant exhaust of interlayer, can fully carry out the sizing mechanism that hole or grid hole are arranged of heat exchange, sizing mechanism adopts stainless steel cloth, corrosion resistant plate or scribble the hole pattern steel plate grid of antiseized polytetrafluoroethylene (PTFE) is interior, install in helping of outer membrane being pierced through before outer membrane is compound, the acupuncture air bells removing roll of abundant exhaust between outer membrane.
The compound bidirectional stretch of above-mentioned continuous production quadrature has the device of hot sealing layer tubular film, it is that film pipe periphery at viscous state is provided with and can inhales the coolant jacket that vacuum suction film pipe attaches rotation and logical cooling medium that vacuum suction and/or blowing attach rubbing rotation cooling body, the cold wind inlet channel is arranged in extrusion die, channel outlet distributes and in the form of a ring towards coolant jacket certain blowing angle that tilts, make cooling air blow to periosteum base inwall and the film pipe is attached on the outer rotation coolant jacket of wall, the recovery tube that reclaims cooling air is arranged in the extrusion die.This inside and outside wall has cooling effectiveness faster in conjunction with the type of cooling, utilize simultaneously and press air that the film pipe is further cooled off in the cold wind loop control, be particularly suitable for wide film base inflation, help periosteum be close to coolant jacket and rotation make the uneven thickness point of periosteum can be constantly in circumference up conversion position to guarantee that back in-process, the compound tubular film of skin have uniform wall thickness and smooth reeling quality.Therefore vacuum suction rubbing rotation coolant jacket is the key device that thickness is evenly distributed on circumference, film inner rotary vacuum cooled cover can be arranged, also can design the rotation coolant jacket in film, this cover can utilize its rotation of vacuum suction film rubbing and cooling, the thickness point is rotated on circumference be evenly distributed.The cooling length of coolant jacket can be considered 0.8～1.2m, and the contact wall has vacuum suction hole and groove, and logical again shower water cooling in the contact wall will be that vacuum-pumping amplexiforms film to touch wall here, but shower water does not flow to wall again from the hole external even come to die head.Go out to add the cold wind ring behind the coolant jacket and further cool off; Or do not vacuumize, just the coolant jacket of water flowing is blowed to film the contact of contact wall and to the cooling of film pipe, the angle of a blowing outlet is arranged here by blowing in the film; Or coolant jacket placed in the film, film external application cooling vane blown film attaches coolant jacket, or the coolant jacket rotation, also inhales vacuum film is attached.Certainly preferably transmission and best operated layout design is to be enclosed within the outer mode of film, can be vacuum suction but film is attached on the cooling contact wall, and also can be has the blowing mouth blowing that film is attached on the coolant jacket contact wall on the die head in the film.
Have the vacuum cooled cover of vacuum suction rubbing rotation and water tank also to can be designed as horizontal, make things convenient for the endless tube exit seal, ponding is in the case bottom, not in rubber seal place.The extruder height might as well arrange, case also can be grown to 2 to 4m, can improve cooling effectiveness and output, and it is long that rotary sleeve can only design 600～1000mm.
The present invention adopt with the simple tension of internal layer composite membrane produce, outer composite membrane simple tension is produced and composite membrane is compound continues the production composite methods for bidirectional stretch has hot sealing layer tubular symphysis for inside and outside layer, and adopted vacuum suction and/or blowing to attach rubbing rotation cooling body, not only cancelled the pause operation in producing, reduced the equipment preparation, improved production efficiency, reduced production cost, also guaranteed the composite membrane quality, making large-scale industrialization produce bidirectional stretch has hot sealing layer tubular film to become possibility.The continuous production composite methods of the present invention, can not only produce compound internal layer composite membrane continuously and be the warp direction stretching film and outer composite membrane is the broadwise stretched film, also can compound internal layer composite membrane be that broadwise stretched film and outer composite membrane are that the bidirectional stretch of warp direction stretching film has hot sealing layer tubular film.The tubular film that will have inside and outside hot sealing layer is cut open, both can obtain the flat diaphragm that hot sealing layer is arranged of the bidirectional stretch of wide cut monolithic, this flat diaphragm is used for waterproofing geomembrane or the geotechnique is furnished with good intensity, if the material of stretched film replaces with crosslinkable organosilane crosslinked polyethylene, at the compound bidirectional stretch that stretches, under wet heat condition, form crosslinked with silicane again after compound the finishing the polymer film of hot sealing layer is arranged, can obtain high and ageing-resistant, the convenient geotechnological material that seals of intensity through the hydrolytic condensation cross-linking reaction.
Description of drawings:
The tubular membrane structure schematic diagram that four-layer structure arranged of Fig. 1 for producing with the present invention.
The tubular membrane structure schematic diagram that five-layer structure arranged of Fig. 2 for producing with the present invention.
Fig. 3 is outer for the present invention produces to be that warp direction stretching film, internal layer are the apparatus structure schematic diagram of the compound tubular film of broadwise stretched film.
Fig. 4 carries inner layer film hollow pipe and outer membrane inflation bracing or strutting arrangement partial enlarged drawing among Fig. 3.
Fig. 5 is the vacuum suction and the attaching rubbing whirligig partial enlarged drawing of blowing among Fig. 3.
Fig. 6 is outer for the present invention produces to be that broadwise stretched film, internal layer are the method and the apparatus structure schematic diagram of the compound tubular film of warp direction stretching film.
Fig. 7 for the present invention produces outer for broadwise stretched film, internal layer be the warp direction stretching film compound tubular film method and install another structural representation.
Skin blows formula warp direction stretching film for putting down to Fig. 8, internal layer is the method and the apparatus structure schematic diagram of the compound tubular film of broadwise stretched film for the present invention produces.
Fig. 9 for the present invention produces outer for warp direction stretching film, internal layer be the broadwise stretched film compound tubular film method and install another structural representation.
Figure 10 has apparatus of the present invention schematic diagram of the vacuum suction cover of rotation in periosteum for upward type.
Figure 11 has apparatus of the present invention schematic diagram of the vacuum suction cover of rotation in periosteum for bottom blowing type.
The specific embodiment:
Fig. 1 has provided 4 layers of tubular membrane structure schematic diagram producing with the inventive method.The tubular film does not have seam, and the compound hot sealing layer of coextrusion 1 is arranged from the inside to surface, broadwise stretched film 2, binding agent rete 3, warp direction stretching film 4.
Fig. 2 has provided 5 layers of tubular membrane structure schematic diagram producing with the inventive method.Be outside the warp direction stretching film 4 in tubular film shown in Figure 1 again coextrusion be compounded with hot sealing layer 1.
Embodiment 1:
Fig. 3～Fig. 5 provided the present invention produce outer for warp direction stretching film, internal layer be the apparatus structure schematic diagram and the production procedure schematic diagram of the compound tubular film of broadwise stretched film.Have the inner layer film of tubular film to stretch in the device and produce mechanism, outer membrane stretches and produces mechanism, the hollow siphunculus, internal layer composite membrane passage, the compound mechanism that produces of inside and outside tunic that stretch and produce mechanism and be communicated with extraneous and internal layer composite membrane drawing mechanism via outer membrane.Produce among the station I in internal layer broadwise stretched film, interior hot sealing layer extruder 6, bonding agent extruder 7, broadwise tensile layer extruder 8 is extruded embryonic tube by three-layer co-extruded pipe-shaped membrane die head 9 and is passed embryonic tube vacuum suction and blowing attaching rubbing rotation cooling body 10, mechanism 10 is by placing the outer vacuum suction rotary sleeve 11 of embryonic tube, drive the travelling gear 12 that vacuum suction rotary sleeve 11 rotates, cooling water inlet 13, spray head 14, coolant outlet 15, evacuation passageway 16, blowing attaches air inlet pipe 47, pass the inflatable mouth 17 of die head in embryonic tube, return-air mouth 18 is formed, the embryonic tube that pipe-shaped membrane die head 9 is extruded is attached at rotary sleeve inwall and rotation under the effect of vacuum suction rotary sleeve 11 and inflatable mouth 17, the thickness point is rotated on circumference to be evenly distributed, at membrane carry-over pinch rolls 19, carry-over pinch rolls 24 tractions down, (carry-over pinch rolls 24 can line transfer speed ratio carry-over pinch rolls 19 height herein, can make two rollers that the speed difference of magnification be arranged by technological design, film is stretched at the broadwise inflation also the stretching of (vertically) of suitable warp-wise simultaneously.Tubular embryonic tube film enters by broadwise stretch blow pipe 20, circulating air heater 21, the steel wire 22 of control broadwise stretching diameter (can be adhesive layer because of three-layer co-extruded skin also, easy steel bonding silk screen and do not establish steel wire, control broadwise stretching diameter usefulness is blown into the pressure of air and the temperature control of heater is controlled), the broadwise drawing mechanism that cooling vane 23 is formed, there is hot blast to import and export 26 in the circulating air heater 21, the collapser 25 that the tubular embryonic tube film of smooth importing is arranged before membrane carry-over pinch rolls 19, the steel wire 22 of control broadwise stretching diameter has been determined the diameter and the blow-up ratio (about 4～9 times) of broadwise stretched film, stretched film 27 after the process broadwise stretches is under 28 tractions of heat treatment rear haulage roller, (this thermal contraction fixation device can be higher than draft temperature 10-15 ℃ to film to shrink the typing processing by circulating air heat treatment contraction calibrator 39, shrinkage ratio is to make its thermal contraction and suitable cooling and shaping under 0.5%～20% the situation), enter then in the internal layer broadwise stretched film storage bin 29 among the station II, entering outer warp direction stretching film by internal layer broadwise stretched film admission passage 30 produces among the station III, individual layer pipe-shaped membrane extrusion die 31 is arranged among the station III, outer warp direction stretching layer extruder 32, vacuum suction and blowing attach rubbing rotation cooling body 10, tubular embryonic tube is through circulating air heater 35, (whether steel wire diameter herein can stretch and determine that its diameter be greater than or less than film base pipe diameter its suitable broadwise by needing to prevent the steel wire 36 that broadwise stretches, greater than its diameter its broadwise is stretched, allow the stretched film broadwise that appropriate molecular orientation is arranged and reduce warp-wise (vertically) and easily tear trend and degree), cooling vane 37 carries out warp direction stretching membrane carry-over pinch rolls 19 and having under the poor draw of speed of warp direction stretching carry-over pinch rolls 38, in the warp direction stretching film, have support that warp direction stretching and heat treatment shrinks that typing handles with die head 31 and the extraneous insufflation channel 33 that communicates with by the passage hollow pipe 34 (herein available stainless steel tube or copper pipe) of membrane carry-over pinch rolls 19 with the internal layer broadwise stretched film of warp direction stretching carry-over pinch rolls 38 clampings sealing, outer stretched film 40 behind the process warp direction stretching is under 41 tractions of heat treatment rear haulage roller, shrink calibrator 39 by circulating air heat treatment and shrink the typing processing, enter internal layer broadwise stretched film, the compound station IV of outer warp direction stretching film, available acupuncture rod 5 punctures outer membrane before inside and outside tunic is compound, get rid of gas between the inside and outside tunic, in order to compound.In compound station IV, two membranes closely and entirely is combined with each other under the steel wire 43 of inner blow gas pressure and circulating air heater 42, control composite membrane diameter, cooling vane 44,45 effects of compound traction pressure roller forms the tubular film that bidirectional stretch has hot sealing layer, collects with the winder rolling in composite membrane rolling double V at last.
Embodiment 2:
Fig. 6 provided the present invention produce outer for broadwise stretched film, internal layer be the apparatus structure schematic diagram and the production procedure schematic diagram of the compound tubular film of warp direction stretching film.Present embodiment 2 and embodiment 1 be different to be in the skin of broadwise stretched film as compound tubular film, and with the internal layer of warp direction stretching film as compound tubular film, therefore in station I, carry out producing of internal layer warp direction stretching film 49 earlier, internal layer warp direction stretching film 49 herein is by warp direction stretching layer extruder 32, interior hot sealing layer extruder 6, two-layer co-extrusion pipe-shaped membrane die head 48 is extruded embryonic tube and is passed embryonic tube vacuum suction and blowing and attach rubbing rotation cooling body 10 backs carry out warp direction stretching formation under the draw that speed poor (about 4～9 times) is arranged of membrane carry-over pinch rolls 19 and warp direction stretching carry-over pinch rolls 38, internal layer warp direction stretching film 49 is produced among the station III by admission passage 30 in outer broadwise stretched film 50, two-layer co-extrusion pipe-shaped membrane die head 51 enters outer broadwise stretched film 50 inside, shrinking the outer broadwise stretched film 50 of typing with broadwise stretching back and heat treatment carries out compound in compound station IV, forming skin is the broadwise stretched film, internal layer is the tubular film that the bidirectional stretch of warp direction stretching film has hot sealing layer, collects with the winder rolling in composite membrane rolling double V at last.
Embodiment 3:
Fig. 7 provided the present invention produce outer for broadwise stretched film, internal layer be another structural representation of device and the production procedure schematic diagram of the compound tubular film of warp direction stretching film.Present embodiment 3 is with embodiment 2 production methods and install basic identical, different is extrudes the embryonic tube among the station I produced of internal layer warp direction stretching film 49 to pass embryonic tube vacuum suction and blowing with embryonic tube and attach rubbing rotation cooling body 10 and inner layer film warp direction stretching and heat treatment and shrink typing and be divided into two stations and carry out, warp direction stretching film base pipe adopts upwards to draw and follows the example of, and warp direction stretching adopts to draw downwards and follows the example of.
Embodiment 4:
Fig. 8 provided the present invention produce outer for warp direction stretching film, internal layer be another structural representation of device and the production procedure schematic diagram of the compound tubular film of broadwise stretched film.Present embodiment 4 is with embodiment 1 production method and install basic identical, warp direction stretching film base pipe employing level that different is is drawn and is followed the example of, the compound employing of inside and outside layer stretched film is upwards drawn and is followed the example of, the vacuum cooled cover of vacuum suction rubbing rotation and waterbox design are horizontal, make things convenient for base pipe exit seal, ponding is in the case bottom, not in rubber seal place.The extruder height might as well arrange, case also can be grown to 2 to 4m, can improve cooling effectiveness and output, and it is long that rotary sleeve can only design 600～1000mm.
Embodiment 5:
Fig. 9 provided the present invention produce outer for warp direction stretching film, internal layer be the broadwise stretched film compound tubular film method and install another structural representation and the production procedure schematic diagram.Present embodiment 5 is with embodiment 1 production method and install basic identical, different is is provided with and internal layer is stretched the composite membrane rolling is collected and by hollow siphunculus passage internal layer simple tension composite membrane is sent into winder 75, the unreeling machine 76 of outer membrane inner chamber continuously, thereby has replaced internal layer broadwise stretched film storage bin 29.
Figure 10 has provided another structural representation of vacuum suction rubbing rotation cooling body in apparatus of the present invention.Place have on the vacuum suction rotary sleeve 53 of embryonic tube film 52 inside vacuumize, logical cold air or the passage 54 of heat medium, the trickle aperture 55 that communicates with passage 54.Motor 56 makes the rotation of vacuum suction rotary sleeve by the sprocket wheel 59 on the sprocket wheel on the output shaft 57 and chain 58 and the vacuum suction rotary sleeve 53.The Plastic tube membrane extrusion die 61 that communicates with extruder 60 be sleeved on the vacuum suction rotary sleeve and with spring bearing 62 is arranged therebetween.The haulage gear 63 that contains man-like shelf 25 and membrane carry-over pinch rolls 19 is positioned at the side of vacuum suction rotary sleeve.Inner cooling vane 64 is arranged between haulage gear and vacuum suction rotary sleeve.The air-out passage 68 that contains the air intake passage 66 of inner cooling air inlet 65 and contain inner cooling air air outlet 67 pass that the vacuum suction rotary sleeve is communicated with inner cooling vane 64 and and the vacuum suction rotary sleeve between spring bearing 62 is arranged.The viscous flow state blank tube film of extruding from extrusion die 69 be attracted on the vacuum suction rotary sleeve and thereupon rotation and under the haulage gear traction at inner cooling vane be positioned at the cold wind that external refrigeration vane 70 blew out periosteum outside and rapid cooling and shaping is a multi-layer barrel plastic blank periosteum 52.
Figure 11 has provided another structural representation of vacuum suction rubbing rotation cooling body in apparatus of the present invention.This cooling body is basic identical with cooling body shown in Figure 10, different is that this cooling body extruded film adopts bottom blowing type, evacuation passageway 73 in the vacuum suction rotary sleeve 53 is separated with the passage 74 of logical cold air or heat medium, cancelled inner cooling vane 64 and external refrigeration vane 70, and with have water inlet 72 and eliminate the cooling water droplet hang flannelette 73 that line uses 71 generations of overflow-type external refrigeration water ring it.

Claims (16)

1, produce the method that the compound bidirectional stretch of quadrature has hot sealing layer tubular film continuously, it is characterized in that method step is as follows:
(1) utilizes at least one plastic extruder, adopt two-layerly or three-layer co-extruded to go out die head and extrude two-layerly or three-layer co-extruded to go out compound preparation and be used for the periosteum base that warp direction stretching or broadwise stretch; Between extrusion die and periosteum base carry-over pinch rolls, utilize and to make the periosteum base carry out rubbing rotation and cooling and shaping to the cooling body of periosteum base vacuum suction and/or blowing attaching rubbing rotation; Being provided with heating arrangements between carry-over pinch rolls and stretching and traction roller heats the periosteum base, the viscous state temperature temperature range following, that the glassy state temperature is above that makes the periosteum base reach its material is carried out the inflation stretching of broadwise several times diameter or the stretching of warp-wise several times length to it, so that it produces the orientation of polymer macromolecule and produce the tensile strength of several times for stretching thing not along draw direction; Make inner surface thus and the simple tension composite membrane of hot sealing layer is arranged as the compound internal layer that the tubular film of hot sealing layer is arranged for bidirectional stretch;
(2) in the simple tension composite membrane of successively producing as internal layer, utilize at least one extruder, adopt that the individual layer extrusion die is two-layer or three-layer co-extruded to be gone out die head and extrude that individual layer is two-layer or three-layer co-extruded to be gone out compound preparation and be used for the periosteum base that warp direction stretching or broadwise stretch; Between extrusion die and periosteum base carry-over pinch rolls, utilize and to carry out rubbing rotation and cooling and shaping to the cooling body of periosteum base vacuum suction and/or blowing attaching rubbing rotation to the periosteum base; Being provided with heating arrangements between carry-over pinch rolls and stretching and traction roller heats the periosteum base, the periosteum base is reached below the viscous state temperature of its material, the above temperature range of glassy state temperature is stretched by the inflation of broadwise several times diameter under inflation or is inflating under the support by the stretching of warp-wise several times length, so that it produces the orientation of polymer macromolecule and produces the tensile strength of several times for stretching thing not along draw direction, the simple tension film that makes thus is the outer membrane as the compound tubular film that hot sealing layer is arranged for bidirectional stretch, between extrusion die and stretching and traction roller, there is an end to be connected with the extruded film head, the be stretched hollow siphunculus of carry-over pinch rolls clamping of one end, the warp direction stretching film that (1) step is produced or broadwise stretching stretched film as the internal layer composite membrane by being connected with extrusion die, the passage of hollow siphunculus of carry-over pinch rolls clamping of being stretched is sent into the outer membrane inner chamber continuously, the outer membrane coverlet to stretch and typing after, the internal layer composite membrane stretch out the hollow siphunculus under the effect of heat treatment stretching and traction roller continuously will in, the synchronous clamping traction of outer membrane participates in the compound of ectonexine composite membrane, herein compound be the internal layer composite membrane when being the warp direction stretching film corresponding compound outer composite membrane be the broadwise stretched film, corresponding compound outer composite membrane was the warp direction stretching film when internal layer composite membrane was the broadwise stretched film, in, have with internal layer composite membrane or the compound adhesive layer of outer composite membrane coextrusion between the outer composite membrane, the compound heat-sealing tunic of coextrusion is arranged at the inner surface of internal layer composite membrane.
(3) between heat treatment stretching and traction roller and compound traction pressure roller, be provided with heating arrangements and cooling body, the internal layer composite membrane is got in continuous also synchronous drawing from hollow siphunculus passage when the heat treatment stretching and traction roller is drawn outer composite membrane, this two membranes is heated between heat treatment stretching and traction roller and compound traction pressure roller, inflation, the internal layer composite membrane is close to adventitia, adhesive layer between the two-layer composite membrane is in unformed shape because of the heating melting, the ectonexine composite membrane is pasted together, temperature control cooling through cooling body, again through compound traction pressure roller to pressing, the ectonexine composite membrane is bonded together firmly the tubular film that hot sealing layer is arranged that becomes bidirectional stretch.
2, the compound bidirectional stretch of continuous production quadrature as claimed in claim 1 has the method for hot sealing layer tubular film, after it is characterized in that the internal layer simple tension composite membrane of producing in (1) step collected with winder, by hollow siphunculus passage internal layer simple tension composite membrane is sent into the outer membrane inner chamber continuously with unreeling machine.
3, the compound bidirectional stretch of continuous production quadrature as claimed in claim 1 has the method for hot sealing layer tubular film, it is characterized in that internal layer composite membrane and outer composite membrane are after process warp direction stretching or broadwise stretching, after stretching and traction roller, be provided with the heat treatment stretching and traction roller, between two rollers, be provided with heating arrangements and cooling body, the internal layer composite membrane of drawn or outer composite membrane produced 0.5%～20% thermal contraction respectively and handle under the temperature that is higher than 5 ℃～20 ℃ of draft temperatures on its draw direction length, make its dimensionally stable through cooling body according to the suitable cooling and shaping of temperature requirement then, film is smooth.
4, the compound bidirectional stretch of continuous production quadrature as claimed in claim 1 or 2 has the method for hot sealing layer tubular film, it is characterized in that as the internal layer composite membrane of the tubular film that hot sealing layer is arranged of bidirectional stretch, outer composite membrane produce and inside and outside tunic compound can adopt respectively upwards to draw to follow the example of or draw downwards follow the example of or parallel drawing followed the example of making, and their combined method is produced.
The method that 5, hot sealing layer tubular film is arranged as claim 1 or the compound bidirectional stretch of 2 or 3 described continuous production quadratures, it is characterized in that internal layer composite membrane as the tubular film that hot sealing layer is arranged of bidirectional stretch is warp direction stretching film and material when being low density polyethylene (LDPE) and two layers of composite construction of high density polyethylene (HDPE), it is that roller clamping or many group row's rollers stretch and produce that the warp direction stretching of its film and thermal contraction are handled.
6, the method that hot sealing layer tubular film is arranged as right 1 or the compound bidirectional stretch of 2 or 3 described continuous production quadratures, it is characterized in that the warp direction stretching of internal layer composite membrane and outer composite membrane or broadwise stretch to use with head is connected, it is big or realize stretching under inflation is supported under the heated situation of film pipe that the gas tube that is pulled roller clamping sealing carries out inflation to the film pipe, or with the needle tubing aerator film pipe is carried out the big or inflation of inflation and support and under the heated situation of film pipe, realize down stretching, it is to rely on stretching and drawing to adjust its pressure and gap between roll-to-roll that inflation when thermal contraction is handled or inflation are supported, the gas of stretching station is put into thermal contraction to be handled station or with the needle tubing aerator its inflation or inflation support is realized, in, the compound station inflation inflation of outer composite membrane relies on the needle tubing aerator that the internal layer composite membrane is inflated and realizes, inflate available heavy caliber tracheae at the initial inflation of start and carry out.
7, as claim 12 or 3 or the many or compound bidirectional stretch of 5 described continuous production quadratures the method for hot sealing layer tubular film is arranged, it is characterized in that handling station at the warp direction stretching of internal layer composite membrane or the stretching station and the thermal contraction fixation thereof of broadwise stretching, stretching station that the warp direction stretching of outer composite membrane or broadwise stretch and thermal contraction fixation thereof are handled station, and in, in the compound station of the compound tubular film that hot sealing layer is arranged for bidirectional stretch of outer composite membrane, extexine at film is provided with under the situation of adhesive layer, is provided with the sizing mechanism that hole or grid hole are arranged that can fully carry out heat exchange in stretching and compound periosteum periphery.
The method that 8, hot sealing layer tubular film is arranged as claim 1 or the compound bidirectional stretch of 2 or 3 described continuous production quadratures is characterized in that the warp direction stretching of internal layer composite membrane, outer composite membrane or the thermal contraction fixation that broadwise is drawn station, internal layer composite membrane, outer composite membrane handle station and the compound station of inside and outside layer composite membrane and be provided with cooling air mechanism and can carry out cooling and shaping by the technological temperature requirement to film.
The method that 9, hot sealing layer tubular film is arranged as claim 1 or the compound bidirectional stretch of 2 or 3 described continuous production quadratures, it is characterized in that bidirectional stretch tubular composite membrane cut open and can obtain flat diaphragm, when producing outer composite membrane, just can produce the diaphragm that all there is the bidirectional stretch of hot sealing layer on the two sides at the polymer of outermost layer coextrusion one deck tool heat sealability.
The method that 10, hot sealing layer tubular film is arranged as claim 1 or the compound bidirectional stretch of 2 or 3 described continuous production quadratures, it is characterized in that when producing internal layer or outer field broadwise stretched film or warp direction stretching film, in the horizontal broadwise of blowing when stretching, the speed that can set and regulate between the carry-over pinch rolls is poor, simultaneously film is carried out warp direction stretching, and when warp direction stretching, under inflation supports, simultaneously film is carried out broadwise and stretch.
11, produce the device that the compound bidirectional stretch of quadrature has hot sealing layer tubular film continuously, it is characterized in that continuous process units is stretched by the internal layer composite membrane of tubular film produces mechanism, outer composite membrane stretches and produces mechanism, stretch via outer composite membrane and to produce being connected with extrusion die of mechanism and produce UNICOM of mechanism with extraneous and the stretching of internal layer composite membrane, produced the carry-over pinch rolls clamping of mechanism and the hollow siphunculus that is coated by outer composite membrane by outer composite membrane stretching, can be stretched by outer composite membrane and produce heat treatment stretching and traction roller in the mechanism, and the compound mechanism that produces of ectonexine composite membrane forms together with the internal layer composite membrane passage of clamping of outer composite membrane continuous synchronization and traction; The internal layer composite membrane stretch produce mechanism by at least one plastic extruder, two-layerly or three-layer co-extruded go out die head, can attach the rubbing rotation cooling body of its rotation of rubbing and cooling periosteum base vacuum suction and/or blowing, to the heating temperature-controlling mechanism of periosteum base heating, periosteum is carried out that broadwise stretches or the nip rolls of warp direction stretching and the inflation mechanism of rotating mechanism and inflation are formed; Outer composite membrane stretch produce mechanism by at least one plastic extruder, individual layer or two-layer or three layers coextrusion die head, can attach the rubbing rotation cooling body of its rotation of rubbing and cooling to periosteum base vacuum suction and/or blowing, to the heating temperature-controlling mechanism of periosteum base heating, periosteum is carried out that broadwise stretches or the nip rolls of warp direction stretching and the inflation mechanism of rotating mechanism and inflation are formed; The compound mechanism that produces of ectonexine composite membrane forms the traction nip rolls of pressure and the inflation mechanism of rotating mechanism and inflation by carrying out to draw to the heating temperature-controlling mechanism of periosteum heating, to periosteum; The internal layer composite membrane stretch produce mechanism and outer composite membrane stretch produce mechanism the stretching and traction roller of warp direction stretching after or after the carry-over pinch rolls that stretch of broadwise by by the heat treatment stretching and traction roller, be arranged on the mechanism of the thermal contraction fixation processing that heating temperature-controlling mechanism between the carry-over pinch rolls and cooling temperature-controlling mechanism form.
12, the device that hot sealing layer tubular film is arranged as the compound bidirectional stretch of continuous production quadrature as described in the claim 11, mechanism is produced in the internal layer composite membrane stretching that it is characterized in that the tubular film, outer composite membrane stretches and produces inflation mechanism in the mechanism and have an end to be connected with extruder head respectively and connect with extraneous source of the gas and the other end is supported the gas tube that stretches by the carry-over pinch rolls clamping of reeded rubber roll and sealing to film base pipe inflation or inflation, and pressure and adjustable gaps between stretching and drawing is roll-to-roll are handled station tubular film and realized inflation or inflate support so that stretching station gas is put into thermal contraction fixation.
13, the device that hot sealing layer tubular film is arranged as the compound bidirectional stretch of continuous production quadrature as described in claim 11 or 12, it is characterized in that before outer composite membrane stretches the coextrusion die head of producing mechanism, being provided with internal layer composite membrane storage box with internal layer composite membrane passage UNICOM, send in the storage box certain-length and make a buffering adapting to the speed of production of back operation so that the internal layer stretching composite membrane that the body plan of internal layer stretching composite membrane stretching preparing machine is got is pulled roller or wind, or be provided with the internal layer composite membrane rolling that stretches is collected, and internal layer simple tension composite membrane is sent into continuously the receipts of outer membrane inner chamber by hollow siphunculus passage, unreeling machine.
14, the device that hot sealing layer tubular film is arranged as the compound bidirectional stretch of continuous production quadrature as described in claim 11 or 12, mechanism is produced in the internal layer composite membrane stretching that it is characterized in that the tubular film, outer composite membrane stretch produce mechanism and in, outer composite membrane composite structure is stretching and compound periosteum periphery is provided with and prevents that the periosteum diameter from enlarging arbitrarily, in making, outer compound firm stickup, the abundant exhaust of interlayer, can fully carry out the sizing mechanism that hole or grid hole are arranged of heat exchange, sizing mechanism adopts stainless steel cloth, corrosion resistant plate or scribble the hole pattern steel plate grid of antiseized polytetrafluoroethylene (PTFE) is interior, install in helping of outer membrane being pierced through before outer membrane is compound, the acupuncture air bells removing roll of abundant exhaust between outer membrane.
15, the device that hot sealing layer tubular film is arranged as the compound bidirectional stretch of continuous production quadrature as described in claim 11 or 12, it is characterized in that the vacuum suction rotating mechanism is arranged in the device, the vacuum suction rotating mechanism comprises between the port of export that is arranged on the Plastic tube membrane extrusion die and the haulage gear, be positioned at that the inwall of the plastic blank periosteum of extruding or outer wall communicate with vacuum line can vacuumize and can active rotation, when vacuumizing the viscous flow state blank tube film of die head exit end because of vacuum suction attach thereon with the vacuum suction cover that has trickle aperture of its rotation or contain rotation the vacuum suction cover vacuum tank or contain the rotation vacuum tank of vacuum suction cover.
16, the device that hot sealing layer tubular film is arranged as the compound bidirectional stretch of continuous production quadrature as described in claim 11 or 12, it is characterized in that it is that film pipe periphery at viscous state is provided with and can inhales the coolant jacket that vacuum suction film pipe attaches rotation and logical cooling medium that vacuum suction and/or blowing attach rubbing rotation cooling body, the cold wind inlet channel is arranged in extrusion die, channel outlet distributes and in the form of a ring towards coolant jacket certain blowing angle that tilts, make cooling air blow to periosteum base inwall and the film pipe is attached on the outer rotation coolant jacket of wall, the recovery tube that reclaims cooling air is arranged in the extrusion die.
CNB2004100219142A 2004-02-26 2004-02-26 Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager Expired - Fee Related CN1311960C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2004100219142A CN1311960C (en) 2004-02-26 2004-02-26 Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2004100219142A CN1311960C (en) 2004-02-26 2004-02-26 Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager

Publications (2)

Publication Number Publication Date
CN1559782A true CN1559782A (en) 2005-01-05
CN1311960C CN1311960C (en) 2007-04-25

Family

ID=34440913

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2004100219142A Expired - Fee Related CN1311960C (en) 2004-02-26 2004-02-26 Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager

Country Status (1)

Country Link
CN (1) CN1311960C (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117033B (en) * 2007-09-19 2010-09-01 甘国工 Light-solidifying binding agent compounded multiaspect drag-resisting compound film and method for producing the same
CN103578493A (en) * 2012-07-31 2014-02-12 通用电气公司 Stacked film threshold component, device, and method of manufacture
CN105563997A (en) * 2014-11-11 2016-05-11 苏州莫立克新型材料有限公司 Method for improving tear resistance of stretch films
CN109311210A (en) * 2016-05-09 2019-02-05 温德莫勒及霍尔希尔公司 For manufacturing the inflation film unit of inflation film
CN109732892A (en) * 2019-01-23 2019-05-10 戴元庆 A kind of manufacturing method and its equipment of multi-layer heat preserving plastic inflatable film
CN113787700A (en) * 2021-08-13 2021-12-14 重庆沃特智成新材料科技有限公司 Film blowing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2985092A1 (en) * 2014-08-12 2016-02-17 Alstom Technology Ltd Tool and method for machining a winding

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1055506A (en) * 1990-04-13 1991-10-23 成都科技大学 Three-layer plastic compound film used for packaging food
DE69629469T3 (en) * 1995-04-25 2012-06-28 Exxonmobil Oil Corp. Production of uniaxially shrinkable, biaxially oriented polypropylene films
CN1095747C (en) * 1997-03-31 2002-12-11 三井化学株式会社 Multilayered laminate containing ultrahigh-molecular polyolefin layer, process for producing same, and apparatus therefor
CN1055264C (en) * 1997-10-09 2000-08-09 哈尔滨市罡昊塑料研究所 Multiple layer co-extruded thermal shrinkage film producing machine set and technology for producing multiple layer co-extruded thermal shrinkage film (high isolation-resistant property)
CN2367450Y (en) * 1999-04-27 2000-03-08 哈尔滨市罡昊塑料研究所 Multilayer coextruding pyrocondensation film apparatus
CN1160185C (en) * 2000-09-05 2004-08-04 甘国工 Method and implement for producing bidirectional stretching-resistant tube-shape compound diaphragm and plain compound liaphragm
CN1160182C (en) * 2002-03-19 2004-08-04 邓昭明 Method for single layer or multilayer coextruding two-way extension polypropylene film and special equipment
CN1448317A (en) * 2003-03-21 2003-10-15 深圳市俊豪塑料制品有限公司 Plastic bag with different heat sealing thread shapes
CN1278843C (en) * 2003-05-30 2006-10-11 甘国工 Coextruded, stretched and compounded two-way tensile tubular film with hot sealing layer and its producing method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101117033B (en) * 2007-09-19 2010-09-01 甘国工 Light-solidifying binding agent compounded multiaspect drag-resisting compound film and method for producing the same
CN103578493A (en) * 2012-07-31 2014-02-12 通用电气公司 Stacked film threshold component, device, and method of manufacture
CN105563997A (en) * 2014-11-11 2016-05-11 苏州莫立克新型材料有限公司 Method for improving tear resistance of stretch films
CN105563997B (en) * 2014-11-11 2017-11-17 苏州莫立克新型材料有限公司 A kind of method for improving stretched film tear resistance
US10399297B2 (en) 2014-11-11 2019-09-03 Molecon (Suzhou) Novel Materials Co., Ltd. Method for improving tear resistance of stretching film
CN109311210A (en) * 2016-05-09 2019-02-05 温德莫勒及霍尔希尔公司 For manufacturing the inflation film unit of inflation film
CN109311210B (en) * 2016-05-09 2022-12-30 温德莫勒及霍尔希尔公司 Blown film unit for producing blown films
CN109732892A (en) * 2019-01-23 2019-05-10 戴元庆 A kind of manufacturing method and its equipment of multi-layer heat preserving plastic inflatable film
CN109732892B (en) * 2019-01-23 2023-06-20 戴元庆 Method and equipment for manufacturing multi-layer heat-insulating plastic inflatable film
CN113787700A (en) * 2021-08-13 2021-12-14 重庆沃特智成新材料科技有限公司 Film blowing device
CN113787700B (en) * 2021-08-13 2022-12-02 重庆沃特智成新材料科技有限公司 Film blowing device

Also Published As

Publication number Publication date
CN1311960C (en) 2007-04-25

Similar Documents

Publication Publication Date Title
CN100532086C (en) One-way stretching film compounded multidirectional drag-resisting avulsion-resisting film and method for producing the same
CN104527189B (en) A kind of online double-layer composite plastic blowing diaphragm and manufacture method thereof
CN1160182C (en) Method for single layer or multilayer coextruding two-way extension polypropylene film and special equipment
CN107696623B (en) Heat shrinkage film suitable for automatic quick packaging of production line
CN1311960C (en) Method and device of continuous producing orthogonal complex bidirection antistretching cylindrical film having heat-seal lager
CN100355554C (en) Continuous method for fabricating orthogonal composite bidirectional tensile cylindrical shaped membrane with heat seal layer, and equipment
CN107053802A (en) A kind of highlighted high-barrier cosmetics are aluminized composite sheet hose construction and preparation method thereof
CN1160185C (en) Method and implement for producing bidirectional stretching-resistant tube-shape compound diaphragm and plain compound liaphragm
CN1836884A (en) Method for manufacturing oriented plastic film
CN1478645A (en) Method and device for manufacturing bidirectional stretching polyproplyene pearl light syntheric paper using pipe film method
CN102205645B (en) Method and device for machining film-blowing type vacuum heat-sealing drip irrigation belts
CN1886248A (en) Process and plant for making a breathable, elastic polyolefin film
CN202114920U (en) Down-blow water cooled non-PVC (polyvinyl chloride) film blow molding equipment
CN101117033B (en) Light-solidifying binding agent compounded multiaspect drag-resisting compound film and method for producing the same
CN104070671B (en) Heat shrink films blown film unit self-fixing device
CN1760084A (en) Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method
CN1278843C (en) Coextruded, stretched and compounded two-way tensile tubular film with hot sealing layer and its producing method
CN106273527A (en) A kind of production method of the high intensity hot-forming composite of film woven cloth
CN203994696U (en) Heat shrink films blown film unit self-fixing device and PVC heat shrink films system thereof
CN105058825A (en) Production method of crossed multi-barrier-layer co-extruded film
CN115742509A (en) High-performance PEF (polyethylene terephthalate) multilayer co-extrusion shrink film and preparation process thereof
CN101117032A (en) Plastic and cloth composite sheet material and method of processing the same and the special extruding mould head
CN2475550Y (en) A two-way extended thermal contracted environment-protection type plastic film forming device
CN110834453A (en) High-temperature-resistant plastic film and production process thereof
CN102814958A (en) Method for improving polyolefin gas barrier properties

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070425

Termination date: 20130226