CN1760084A - Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method - Google Patents
Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method Download PDFInfo
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- CN1760084A CN1760084A CN 200410040844 CN200410040844A CN1760084A CN 1760084 A CN1760084 A CN 1760084A CN 200410040844 CN200410040844 CN 200410040844 CN 200410040844 A CN200410040844 A CN 200410040844A CN 1760084 A CN1760084 A CN 1760084A
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Abstract
A cylindrical packing bag is composed of a bidirectionally stretched cylindrical film made up of polymer through fusing, blowing, cooling, reheating and bidirectional stretching, and an unstretched cylindrical film made up of polyolefin through fusing, blowing and cooling. Its advantages are high strength and high utilization rate of material.
Description
Technical field:
What the present invention relates to is a kind of packaging bag, particularly be the directed tubular film of a kind of biaxial tension and the compound tubular package bag of polyolefin tubular film of stretch orientation not.
Background technology:
Existing unilateral stretching diaphragm or biaxial tension diaphragm and compound flat diaphragm production and the report of unstretching film sheet, but flat diaphragm is made the tubular bag of packaging bag must be with the overlap joint melting welding of diaphragm edge, complex process not only, and waste material, the intensity that the molten commissure of overlap joint has reduced compound film sheet is corresponding also just to have reduced the packaging bag transverse strength greatly, and the weight capacity of bag is descended greatly.Also have in addition my application by one deck warp-wise unilateral stretching plastics tubular diaphragm at least and one deck broadwise unilateral stretching plastics tubular diaphragm quadrature at least bidirectional tensile plastic tubular composite film packaging bag that is composited, monoway stretch-oriented quadrature is compound be in the method for tubular film useful in coating machine compound, the blown film mechanism of also useful band rotation rubbing adsorption plant carries out quantity-produced, though these methods can obtain the high tubular bag of intensity, but this method equipment complexity, the production difficulty of the tubular film of cross directional stretch is big, operation is many, productive costs is higher, the bag that obtains is because of all being that stretch film is composited, the bag flexibility is not enough, the internal layer hot sealing layer participates in the thickness low LCL of sweat soldering, weld strength is not high enough, the compound tubular film bag intensity of the intensity of weld and quadrature is not equal to, the loss that also is weld strength has influenced giving full play to of bag intensity, should have to improve the necessity that obtains the compound tubular film of better cost performance; The blown film of Japanese also existing super high molecular weight is compound with the tubular film of vertically unilateral stretching to be the report of tubular film, but vertically the tubular film of unilateral stretching only has very high tensile strength on the direction of vertically unilateral stretching, and the intensity on draw direction not is very low, the transverse strength of this kind bag relies on the blown film of the super high molecular weight that does not stretch fully, because of the blown film thickness of its this layer of technological reason super high molecular weight has only 0.04MM, transversely tensile strength is very low to make it, packaging bag is easy to generate in the horizontal breaks.At present still unparalleledly be the report of packaging bag to the stretch orientation tubular film and the tubular film that do not stretch are compound, do not have more that multi-layer co-extruded no stretch film and multi-layer co-extruded stretch orientation film are compound to be the report of tubular film package bag.
Summary of the invention:
In view of above reason, the objective of the invention is in order to overcome above deficiency, a kind of intensity height be provided, save material, vertical transverse strength is all higher and the anti-ability of puncturing is strong, the simple biaxial tension tubular of the manufacturing that heat sealability is good film with do not stretch the compound tubular package bag of tubular film.Another object of the present invention is for the production method of this tubular package bag is provided.
The object of the present invention is achieved like this:
The biaxial tension tubular film of the present invention and the compound tubular package bag of tubular film that do not stretch, be included in the tubular bag of no any melting soldered on periphery, the tubular bag is composited by at least two layers of tubular polymer film, wherein one deck tubular polymer film is to extrude blowfilm shaping through melting at least, cooling and shaping is that the tubular film reheats to more than the glassy state temperature again, the viscous state temperature is following after biaxial tension produces the bipartite molecules stretch orientation, the tensile strength of its warp-wise and broadwise is all greater than the tubular film more than a times of the film strength of not carrying out stretch orientation of gauge material of the same race, at least one deck tubular film is that polyolefine material is extruded blowfilm shaping through melting, directed and the heat sealability and the anti-tubular film that punctures excellent performance that form of drawn no longer behind the cooling and shaping, the tubular package bag that this complex film is made, all the film that does not carry out stretch orientation than condition of equivalent thickness and material has 3-8 times or higher tensile strength on warp-wise and broadwise, the intensity height, economize in raw materials, and, make the tubular package bag have good heat sealability and the anti-performance that punctures because compound one deck does not carry out the film of stretch orientation.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, the tubular bag of this packaging bag is suitable for reading to seal with the diaphragm sealing label by the inner layer film heat sealing or with the folding back of the cylindrical shell at sack place with going to the bottom.
The tubular film of stretch orientation that the above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, biaxial tension produce the bipartite molecules orientation is with unstretched orientation and heat sealability and anti-the compound of tubular film that punctures excellent performance are that producing fusion compound by the tubular film of tubular film heating back with stretch orientation that do not stretch is one.This packaging bag has only double-layer structure, and rete is thin, saves material, and the intensity height is manufactured easily.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, have coextrusion to be compounded in its surperficial adhesive agent rete on the interior or outside face of the tubular film of stretch orientation or unstretched directed tubular film, this adhesive agent rete is with the stretch orientation tubular film and the compound tubular complex film that is structure as a whole of polyolefin tubular film bond vitrified of stretch orientation not.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, the directed tubular film of biaxial tension is at the outermost layer of packaging bag, and the polyolefin tubular film of stretch orientation is not in the innermost layer.The nexine heat sealability of this kind structure bag is good, the heat seal strength height of bag, and outer intensity height, the shock resistance of bag, outer tear resistance because of the directed counter stress mouth of biaxial tension is poor, but there is the anti-polyolefin tubular film that punctures the good not stretch orientation of tear resistance to do nexine tight bond applying with it, can stop tearing arbitrarily and extending of stress mouth, this bag has promptly been saved material, has improved intensity again.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, the directed tubular film of biaxial tension is at the innermost layer of packaging bag, and the polyolefin tubular film of stretch orientation is not at outermost layer.This stretch film is at the tubular complex pocket of internal layer, convenient inside and outside tunic compound working procedure continuity is produced, the extrusion-blown modling head central aisle that passes through unstretching film that symphysis behind the stretch orientation is continuous is sent into the blow molding inner chamber of unstretching film, when the unstretching film cooling and shaping with the air-blowing stretch film that expands, itself and unstretching film are fitted, outside under the effect of calibration sleeve, make with unstretching film coextrusion adhesive agent and the stretch film applying of layer within it compound, or fit and compound at its outer field adhesive agent and unstretching film internal layer with the stretch film coextrusion, or directly the unstretching film heating being made it tubular film with stretch orientation without adhesive layer produces that fusion is compound to be one.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, the directed tubular film of biaxial tension are that it(?) by two or three different materials but each other can melting fit that not stratified employing is two-layer or three-layer co-extruded to go out the film that composite molding drawn orientation forms.The existing a large amount of reports of technology that this coextrusion is compound have been mature technology, just select layers of material with function as required.Go out composite molding after drawing orientation such as the two-layer coextrusion of blend of the LLDPE of one deck homopolymerization PP or two yuan of copolymerization PP or ternary polymerization PP material and one deck metallocene Hi-fax MLLDPE or Hi-fax LLDPE or carbon eight is compound or three-layer co-extruded, wherein the polyolefin film of MLLDPE and this layer of LLDPE blend and stretch orientation not is by the adhesive agent EVA bonding that fits, can make stretch orientation film and the bonding of stretch orientation film fit more not firm, more anti-stress mouth is torn and is extended, the film of three-layer co-extruded stretching can be MLLDPE+LLDPE/PP/MLLDPE+LLDPE, this film and unstretching film are compounded with better flexibility and tear resistance, simultaneously the intensity height, cost is low; The film of three-layer co-extruded stretching can be PA/EVOH or ionic resin/MLLDPE+LLDPE, this film and its barrier property excellence of the compound back of the polyolefine material film that does not stretch, can fresh-keeping and oxygen barrier, internal layer is again the polyolefin that does not stretch, and has good heat sealability and heat seal strength simultaneously; The material of the two-layer or trilamellar membrane of coextrusion stretch orientation can because of the requirement of function with different materials, as long as intensity can improve and again can be by selection of binder and the tubular polymer film that does not stretch bonding, all in the application example scope of this patent claim behind the stretch orientation.The outermost layer that the EVA that three-layer co-extruded EVA/HDPE+MLLDPE/ skin is very thin is compound to extrude the tubular film of back EVA after compound that stretch can play the surface anti-skidding effect.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, the polyolefin tubular film of stretch orientation is not two layers or three-layer co-extrudedly goes out complex film.For intensity and the anti-ability of puncturing that improves unstretching film, so that itself and stretch orientation film have more high strength after compound, anti-performance and the tear resistance of puncturing, though can being one deck, unstretching film has heat sealability, tear resistance and have the LDPE or the LLDPE of good tensile strength properties (to comprise MLLDPE, the LLDPE of carbon eight), but if adopt two-layer or three-layer co-extruded compound polyolefin film, have than the better above-mentioned performance of monofilm, two-layer or three-layer co-extruded material, can be identical LDPE or the blend of LLDPE or MLLDP and LLDPE, also can adopt different materials to come compound extruding by each layer, such as LDPE/MLLDPE+LLDPE or MLLDPE+LLDPE/LDPE/MLLDPE+LLDPE or LDPE/MLLDPE+LLDPE/LDPE.
The above-mentioned biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, compound or be coated with blend layer or the fine particle shape thing skid resistant course that one deck is used for skidproof adhesive agent (EVA) polymeric layer or poly-mer and inorganic material in the outermost layer coextrusion of tubular package bag.
Biaxial tension tubular film of the present invention and the production method of the compound tubular package bag of tubular film of not stretching are that one or more layers polymeric layer blowfilm shaping and the cooling and shaping melting extruded with inflation film manufacturing machine are to reheat to more than the glassy state temperature behind the tubular film again, following tubular film and the cooling rolling that produces the stretch orientation of bipartite molecules orientation through biaxial tension of viscous state temperature, the tubular film that one or more layers polyolefin layer blowfilm shaping of melting being extruded with inflation film manufacturing machine is unstretched orientation also cools off rolling, the tubular film of the tubular film of biaxial tension orientation and unstretched orientation is sent on interior multiple film device be heated to the state that ectonexine tubular film can bond vitrified in the casing of the multiple film sizing mechanism of hot case, meanwhile give internal layer tubular film inwall pressurized air and be close to outer tubular film inwall so that internal layer tubular film expands, compress firm welding or bonding forms the biaxial tension tubular film tubular multiple film compound with the tubular film that do not stretch through at least one pair of membrane nip rolls traction of casing exit end, cut off back cover through Bag Making Machine and make the tubular package bag through on packing bag production line automatically, forming packing or tubular film after the rolling rolling; Or be the inner chamber that the passage of hollow siphunculus of inflation film manufacturing machine die head of the tubular film of unstretched orientation is sent into the tubular film of unstretched orientation continuously by extruding blowfilm shaping with biaxial tension tubular film, or the passage of the hollow siphunculus of the tubular film of the unstretched orientation inflation film manufacturing machine die head by extruding blown film biaxial tension attitude reference device is sent into continuously the inner chamber of the tubular film of biaxial tension orientation, give the inflation of internal layer tubular film, make internal layer tubular film be close to the inwall of outer tubular film, make interface that two-layer tubular film is close to mutually under hot melting state that the welding of ectonexine tubular film is compound or utilize adhesive agent on the interface to paste to be combined with each other, the compound tubular film that it is biaxial tension tubular film that outer tubular film internal layer for unstretched orientation is made in the cooling rolling or outer for biaxial tension tubular film internal layer is the compound tubular film of the tubular film of unstretched orientation is through forming packaging bag after the rolling rolling or cutting off back cover through Bag Making Machine and make the tubular package bag on automatic packing bag production line; The investment of this production method is little, technology is simple, coating machine production stretch film tubular complex film outside in available, also available blown film mechanism carries out continuous production stretch film at interior tubular complex film, continuity method produce best adhesive agent at the unstretching film inside face with convenient compound with the stretch film of being inserted in inner chamber while hot the time, certainly, if produce the big tubular film in folding footpath, also can adopt continuity method production stretch film tubular complex film outside, as long as the film innermost layer has heat sealable material that heat seal strength is just arranged, because compound back rete is than the compound thickness of unilateral stretching quadrature, particularly the unstretching film layer is when innermost layer, even part is separated to also not influencing cylindrical shell bag intensity and heat seal strength during heat-sealing.
Above-mentioned interior coating machine and film coating method disclose in many patent documentations in detail, as application number is 03117965.7 patent " at the method and the device thereof of plastics tubular film or the multiple film of tube-shaped fabric inwall ", automatically packing bag production line also has commercially available complete production line to supply, and is not described in detail in this.
The compound tubular film of wherein one deck in the composite film packaging bag of the present invention after biaxial tension tensile strength than the stretched plastic diaphragm is not high 3 to 8 times, bidirectional stretch intensity height, complex film has also adopted the plastics tubular film of the unstretched heat sealability excellence of one deck at least, more conveniently seals and is connected.
Packaging bag tensile strength height of the present invention, non-leakage, anti-skidding, save material, film properties is good, and particularly as the transverse strength height of tubular film, packing can realize automation, applied range, recyclable utilization is beneficial to environmental protection.
Description of drawings:
Fig. 1 is flat limit, a bottom heat sealing open package bag scheme drawing.
Fig. 2 is an A-A sectional structure scheme drawing among Fig. 1.
Fig. 3 is a bottom heat sealing valve port bag packaging bag scheme drawing.
Fig. 4 is the valve port bag packaging bag scheme drawing that the diaphragm sealing label is arranged on rectangular base and top.
Fig. 5 is another structural representation.
Fig. 6 is a MULTILAYER COMPOSITE film package bag cross-sectional structure scheme drawing.
Direct pressing forms the cross-sectional structure scheme drawing to Fig. 7 at the interface by the hot pressing melting for outer biaxial stretching film and internal layer unstretching film.
Direct pressing forms the cross-sectional structure scheme drawing to Fig. 8 at the interface by the hot pressing melting for outer unstretching film and internal layer biaxial stretching film.
Fig. 9 makes composite film packaging bag method scheme drawing for utilizing inflation film manufacturing machine and interior multiple film device.
Figure 10 is that unstretched tubular film, internal layer are the compound tubular film production method scheme drawing of biaxial tension tubular film for producing outer continuously.
Figure 11 is that biaxial tension tubular film, internal layer are the compound tubular film production method scheme drawing of unstretched tubular film for producing outer continuously.
The specific embodiment:
Embodiment 1:
Fig. 1, Fig. 2 have provided the embodiment of the invention 1 structural representation.Referring to Fig. 1, Fig. 2, heat sealing 2 is arranged at the bottom of tubular package bag 1.Packing bag 1 is to be composited by adhesive agent rete 5 by outer biaxial stretching film 3 and internal layer unstretching film 4.
Embodiment 2:
Fig. 3 has provided present embodiment 2 figure.Present embodiment 2 is basic same with embodiment 1, and not existing together is that valve port 11 is arranged on the packaging bag cylindrical body.Cylindrical body is to be composited by adhesive agent rete 5 by outer biaxial stretching film 3 and internal layer unstretching film 4 equally, at the outside face of film one deck skid resistant course 67 is arranged.
Embodiment 3:
Fig. 4 has provided present embodiment 3 figure.Present embodiment 3 is basic same with embodiment 1.Do not exist together is valve port 11 to be arranged on the packaging bag cylindrical body and have folded patch to seal 6 up and down.The packaging bag cylindrical body is to be composited by adhesive agent rete 5 by outer biaxial stretching film 3 and internal layer unstretching film 4 equally.
Embodiment 4:
Fig. 5 has provided the embodiment of the invention 4 structural representations.Present embodiment 4 is basic same with embodiment 1, and not existing together is that the cylindrical body of packaging bag is to be composited by adhesive agent rete 5 by outer unstretching film 7 and internal layer biaxial stretching film 8.
Embodiment 5:
Fig. 6 has provided the embodiment of the invention 5 structural representations.In present embodiment 5, skin is two-layer coextrusion biaxial stretching film 9, and internal layer is two-layer coextrusion unstretching film 10, by the adhesive agent rete 5 packing bag that is composited.
Embodiment 6:
Fig. 7 has provided the embodiment of the invention 6 structural representations.In present embodiment 6, the cylindrical body of packaging bag is directly to be composited by hot pressing by outer biaxial stretching film 3 and internal layer unstretching film 4.
Embodiment 7:
Fig. 8 has provided the embodiment of the invention 7 structural representations.Present embodiment 7 is basic same with embodiment 6, and not existing together is that the cylindrical body of packaging bag is directly to be composited by hot pressing by outer unstretching film 7 and internal layer biaxial stretching film 8.
Embodiment 8:
Fig. 9 has provided the present invention and has utilized inflation film manufacturing machine and interior multiple film device to make composite film packaging bag production method embodiment scheme drawing.In the present embodiment, producing biaxial tension tubular membrane process: first step A utilizes two extruders 13 and coextrusion die head 14 in the blown film unit 12 to extrude tubular film 16, after air ring 15 coolings, enter in the biaxial stretching film mechanism 18, heater via 19 is heated to the draft temperature interval again, charged pressure gas 20 in the tubular film, tubular film 16 is drawn as biaxial tension tubular film 21 under the effect of pressed gas 20 and the nip rolls 17,22 that the speed difference is arranged, then by winder 23 rollings; The second step B utilizes two extruders 25 and coextrusion die head 26 in the blown film unit 24 to extrude tubular film 28, by winder 29 direct rollings, forms unstretched tubular film 28 after air ring 27 coolings; Biaxial tension tubular film in promptly the 3rd step C utilizes with the tubular film compound working procedure that do not stretch multiple film device biaxial tension tubular film 21 and unstretched tubular film 28 be combined with each other form compound tubular film, method is that the biaxial tension tubular film 21 that first film placing mechanism 30 runs out is pinched on hollow major axis 31, the unstretched tubular film 28 that second film placing mechanism 32 is run out passes from hollow major axis 31, tubular film 21,28 pinch in the casing that is admitted to down the multiple film sizing mechanism 34 of hot case at least one group of traction nip rolls 33 and to be heated to tubular film 21 by temperature booster 38, the state of energy bond vitrified between 28, meanwhile give tubular film 28 inwall pressurized airs and be close to tubular film 21 inwalls so that tubular film 28 expands with aerator 37, tubular film 21 and the tubular film 28 of being close to tubular film 21 inwalls compress secure bond through at least one pair of membrane nip rolls traction 33 of casing exit end and form tubular complex film 35, then by winder 36 rollings; Compound tubular film printing and bag making operation i.e. the 4th step D is utilized the bag manufacturing line, complex film 35 runs out from unreeling machine 39, after printer 40 printings, be the composite film packaging bag 42 of unstretched tubular film 28 for biaxial tension tubular film 21 internal layers after cutting off and seal end mechanism 41 cut-out back covers, making skin.
Embodiment 9:
Figure 10 provided the present invention produce continuously outer for unstretched tubular film, internal layer be compound tubular film production method embodiment 9 scheme drawings of biaxial tension tubular film.In the present embodiment, the biaxial tension tubular film of biaxial tension tubular film 21 by inflation film manufacturing machine die head 43 enters and draws the inner chamber that film tube passage 44 directly enters unstretched tubular film 28, under the effect of blowing, biaxial tension tubular film 21 inner inflatable, make biaxial tension tubular film 21 be close to the inwall of the unstretched tubular film 28 that is in the hot melt state, thereby make the complex film 46 that skin is a biaxial tension tubular film 21 for unstretched tubular film 28 internal layers, producing skin through the bag manufacturing line is the composite film packaging bag of biaxial tension tubular film 21 for unstretched tubular film 28 internal layers.
In the present embodiment, elder generation introduces passage with biaxial stretching film and draws film pipe 44 and emit biaxial stretching film at the height that is higher than more than the blown film cooling line of outer unstretching film, draw traction nip rolls 17 again, internally inflate with needle tubing, make biaxial stretching film 21 inflations stick the inwall of unstretching film 28, and control the external diameter of complex films 46 by sizing tool 45.Unstretching film 28 forms the tubular film 28 that do not stretch by extruding blown-film die 43 (double-layer coextrusion mould or 3 layers of co-extrusion die head), cooling vane 15; utilize the waste heat of this film; also be that film bubble internal layer also is in viscous state; but film bubble skin cools off film forming substantially; outside multiple film, decide 28 internal layers are steeped co-extrusion at device 45 places at film EVA tack coat; or co-extrusion is utilized waste heat that two membranes is combined with each other and is made complex film shown in Figure 5 at biaxial stretching film 21 outer field EVA tack coats.Perhaps all do not design adhesive layer, utilize unstretching film 28 its internal layer in extruding cooling process also to be in viscous state, and under the air-cooled basic film forming situation of its skin, utilize biaxial stretching film 21 air pressure inside, sizing tool 45 places are exerted pressure by air pressure two membranes are combined outside, make Fig. 7 or complex film shown in Figure 8.
Embodiment 10:
Figure 11 has provided the present invention, and to produce outer continuously be the compound tubular film production method flow implementation illustration intention of unstretched tubular film for biaxial tension tubular film, internal layer.In the present embodiment, have the inner layer film of unstretched tubular film 28 to produce mechanism 47, mechanism 48 is produced in the outer membrane biaxial tension, produces mechanism 48 and can be by the hollow siphunculus 55 of inner layer film 28, the compound mechanism 64 that produces of inside and outside tunic through the outer membrane biaxial tension.Produce among the station I at unstretched tubular inner layer film 28, inner layer film 28 makes by producing mechanism 47, the outer biaxial stretching film that enters among the station II by inner layer film access passage 51 is produced in the mechanism 48 then, individual layer pipe-shaped membrane extrusion die 50 is arranged among the station II, outer extruder 49, the air ring 52 of tubular embryonic tube 65, tubular embryonic tube 65 is heated to the draft temperature interval through circulating air heating arrangement 56, under the effect of gas blow pipe passage 54, to tubular embryonic tube 65 inner inflatable, at pressed gas and the nip rolls 53 that the speed difference is arranged, tubular embryonic tube 65 is drawn as biaxial tension tubular film 21 under 58 the effect, after cooling vane 57 coolings, enter the unstretched tubular film 28 of internal layer among the station III, in the composite structure 64 of outer biaxial tension tubular film 21, available acupuncture rod 66 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 III, two membranes is at inner blow gas pressure and circulating air heating arrangement 59, the wire net 60 of control complex film diameter, cooling vane 61, compound traction pressure roller 62 effects closely and entirely are combined with each other down forms the outer biaxial tension tubular film that is, internal layer is the compound tubular film 35 of unstretched tubular film, collects with winder 63 rolling in complex film rolling double IV at last.In compound station III, with inflating needle tubing to inflation in the unstretching film 28, be attached to together on the wire net 60 of control diameter after making it inflation and being affixed to the inside face of biaxial stretching film 21, the heating of the circulating air heating arrangement 59 that utilizes the waste heat of biaxial stretching film 21 or increase again, design worked at the adhesive layer of unstretching film 28 skins or biaxial stretching film 21 internal layers make two membranes compound at 60 places, perhaps utilize heating and biaxial stretching film 21 the viscosity flow temperature difference also promptly to be arranged with different viscous state temperature is not arranged between the stretch film 28, be combined with each other exerting pressure with melting between two-layer, and the interface that can be in first melting here is the outside face of unstretching film 28, because of unstretching film 28 has lower viscous state temperature than the film 21 that has carried out biaxial tension, the melting of surface energy elder generation makes Fig. 7 or complex film shown in Figure 8.
The various embodiments described above are that foregoing of the present invention is further described, but this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to the foregoing description.All technology that realizes based on foregoing all belong to scope of the present invention.
Claims (10)
1, the biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, be included in the tubular bag of no any melting soldered on the periphery, it is characterized in that tubular package bag tubular bag is composited by at least two layers of tubular polymer film, wherein one deck tubular polymer film is to extrude blowfilm shaping through melting at least, cooling and shaping is that the tubular film reheats to more than the glassy state temperature again, the viscous state temperature is following after biaxial tension produces the bipartite molecules stretch orientation, all greater than the tubular film more than a times of the film strength of not carrying out stretch orientation of gauge material of the same race, one deck tubular film is that polyolefine material is extruded blowfilm shaping through melting to the tensile strength of its warp-wise and broadwise at least, unstretched orientation behind the cooling and shaping and the heat sealability and the anti-tubular film that punctures excellent performance that form.
2, the biaxial tension tubular film as claimed in claim 1 and the compound tubular package bag of tubular film that do not stretch is characterized in that the tubular bag of this packaging bag is suitable for reading and go to the bottom and seal with the diaphragm sealing label by the inner layer film heat sealing or with the folding back of the cylindrical shell at sack place.
3, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that the tubular film of stretch orientation that biaxial tension produces the bipartite molecules orientation is with unstretched orientation and heat sealability and anti-the compound of tubular film that punctures excellent performance are that producing fusion compound by the tubular film of tubular film heating back with stretch orientation that do not stretch is one.
4, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch, it is characterized in that on the interior or outside face of the tubular film of stretch orientation or unstretched directed tubular film, having coextrusion to be compounded in its surperficial adhesive agent rete, be one with the tubular film of stretch orientation and the tubular film bond vitrified that do not stretch are compound.
5, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that the outermost layer of the directed tubular film of biaxial tension in packaging bag, and the polyolefin tubular film of stretch orientation is not in the innermost layer.
6, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that the innermost layer of the directed tubular film of biaxial tension in packaging bag, and the polyolefin tubular film of stretch orientation is not at outermost layer.
7, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that the directed tubular film of biaxial tension is that it(?) by two or three different materials but each other can melting fit that not stratified employing is two-layer or three-layer co-extruded to go out the film that composite molding drawn orientation forms.
8. the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that not the polyolefin tubular film of stretch orientation is two layers or three-layer co-extrudedly goes out complex film.
9, the biaxial tension tubular film as claimed in claim 1 or 2 and the compound tubular package bag of tubular film that do not stretch is characterized in that compound or be coated with blend layer or the fine particle shape thing skid resistant course that one deck is used for skidproof binder polymer layer or poly-mer and inorganic material in the outermost layer coextrusion of tubular package bag.
10, the production method of the biaxial tension tubular film and the compound tubular package bag of tubular film that do not stretch, it is characterized in that one or more layers polymeric layer blowfilm shaping and the cooling and shaping melting extruded with inflation film manufacturing machine are to reheat to more than the glassy state temperature behind the tubular film again, following tubular film and the cooling rolling that produces the stretch orientation of bipartite molecules orientation through biaxial tension of viscous state temperature, the tubular film that one or more layers polyolefin layer blowfilm shaping of melting being extruded with inflation film manufacturing machine is unstretched orientation also cools off rolling, the tubular film of the tubular film of biaxial tension orientation and unstretched orientation is sent on interior multiple film device be heated to the state that ectonexine tubular film can bond vitrified in the casing of the multiple film sizing mechanism of hot case, meanwhile give internal layer tubular film inwall pressurized air and be close to outer tubular film inwall so that internal layer tubular film expands, compress secure bond through at least one pair of membrane nip rolls traction of casing exit end and form biaxial tension tubular film and do not draw the compound tubular complex film of secondary tubular film, cut off back cover through Bag Making Machine and make the tubular package bag through on packing bag production line automatically, forming packaging bag or tubular film after the rolling rolling; Or be the inner chamber that the passage of hollow siphunculus of inflation film manufacturing machine die head of the tubular film of unstretched orientation is sent into the tubular film of unstretched orientation continuously by extruding blowfilm shaping with biaxial tension tubular film, or the passage of the hollow siphunculus of the tubular film of the unstretched orientation inflation film manufacturing machine die head by extruding blown film biaxial tension attitude reference device is sent into continuously the inner chamber of the tubular film of biaxial tension orientation, give the inflation of internal layer tubular film, make internal layer tubular film be close to the inwall of outer tubular film, interface melting under hot melting state that two-layer tubular film is close to mutually is compound or utilize the adhesive agent stickup on the interface to be combined with each other, the compound tubular film that it is biaxial tension tubular film that outer tubular film internal layer for unstretched orientation is made in the cooling rolling or outer for biaxial tension tubular film internal layer is the compound tubular film of the tubular film of unstretched orientation is through forming packaging bag after the rolling rolling or cutting off back cover through Bag Making Machine and make the tubular package bag on automatic packing bag production line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100408445A CN100390026C (en) | 2004-10-15 | 2004-10-15 | Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method |
Applications Claiming Priority (1)
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| CNB2004100408445A CN100390026C (en) | 2004-10-15 | 2004-10-15 | Packaging bag combined bi-directional drawn cylindrical shaped membrane with not drawn cylindrical shaped membrane, and production method |
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| CN1760084A true CN1760084A (en) | 2006-04-19 |
| CN100390026C CN100390026C (en) | 2008-05-28 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508049A (en) * | 2013-10-20 | 2014-01-15 | 江苏申凯包装高新技术股份有限公司 | High-temperature-resistant cylinder material double-bottom-sealing bag |
| CN104786513A (en) * | 2015-03-30 | 2015-07-22 | 安徽松泰包装材料有限公司 | Production technology of food packaging film |
| CN105150565A (en) * | 2015-07-07 | 2015-12-16 | 浙江新高包装有限公司 | High-density polyethylene (HDPE) composite packing film |
| CN109080098A (en) * | 2017-06-14 | 2018-12-25 | 广东红波建材科技有限公司 | A kind of cold and hot composite PVC plastic made tile surface layer moulding process and device |
| CN110421944A (en) * | 2019-08-15 | 2019-11-08 | 郑文冉 | The antibacterial preserving fruit and vegetable utilizing material and preparation method of a kind of decomposing ethylene and slow-release function |
| CN114055762A (en) * | 2021-12-08 | 2022-02-18 | 广州美斯乐科技有限公司 | Manufacturing equipment and manufacturing process of vacuum packaging bag |
| CN117429128A (en) * | 2023-12-20 | 2024-01-23 | 杭州神彩包装印业有限公司 | Self-moisture-absorbing packaging bag and manufacturing process thereof |
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| US3758354A (en) * | 1969-10-18 | 1973-09-11 | Gunze Kobunshi Kogyo Co Ltd | Manufacture of multi ply board of thermoplastic material |
| BE756616A (en) * | 1969-10-31 | 1971-03-01 | Reifenhauser K G | BLOWING PROCESS AND INSTALLATION FOR MANUFACTURING MULTI-LAYER SHEETS OF PLASTIC MATERIALS |
| US3853661A (en) * | 1971-05-01 | 1974-12-10 | Mitsubishi Petrochemical Co | A method of producing plastic bags |
| JP3258800B2 (en) * | 1993-12-30 | 2002-02-18 | 大日本印刷株式会社 | Laminated material |
| CN1142061C (en) * | 2000-07-07 | 2004-03-17 | 甘国工 | Bidiretional tension-resistant packing bag of composite plastic film |
| 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 |
| JP2004243523A (en) * | 2002-12-17 | 2004-09-02 | Toyo Seikan Kaisha Ltd | Multilayered barrier film and package using the same |
| CN2616363Y (en) * | 2003-05-30 | 2004-05-19 | 甘国工 | Cylindrical film having heat-sealing layer with coextrusion stretching and composite biaxial tension |
| CN1478645A (en) * | 2003-07-01 | 2004-03-03 | 甘国工 | Method and device for manufacturing bidirectional stretching polyproplyene pearl light syntheric paper using pipe film method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103508049A (en) * | 2013-10-20 | 2014-01-15 | 江苏申凯包装高新技术股份有限公司 | High-temperature-resistant cylinder material double-bottom-sealing bag |
| CN103508049B (en) * | 2013-10-20 | 2015-11-18 | 江苏申凯包装高新技术股份有限公司 | High-temperature-rescylinder cylinder material double-bottom-sealinbag bag |
| CN104786513A (en) * | 2015-03-30 | 2015-07-22 | 安徽松泰包装材料有限公司 | Production technology of food packaging film |
| CN105150565A (en) * | 2015-07-07 | 2015-12-16 | 浙江新高包装有限公司 | High-density polyethylene (HDPE) composite packing film |
| CN105150565B (en) * | 2015-07-07 | 2017-11-28 | 浙江新高包装有限公司 | HDPE composite package films |
| CN109080098A (en) * | 2017-06-14 | 2018-12-25 | 广东红波建材科技有限公司 | A kind of cold and hot composite PVC plastic made tile surface layer moulding process and device |
| CN110421944A (en) * | 2019-08-15 | 2019-11-08 | 郑文冉 | The antibacterial preserving fruit and vegetable utilizing material and preparation method of a kind of decomposing ethylene and slow-release function |
| CN114055762A (en) * | 2021-12-08 | 2022-02-18 | 广州美斯乐科技有限公司 | Manufacturing equipment and manufacturing process of vacuum packaging bag |
| CN114055762B (en) * | 2021-12-08 | 2022-06-07 | 广州美斯乐科技有限公司 | Manufacturing equipment and manufacturing process of vacuum packaging bag |
| CN117429128A (en) * | 2023-12-20 | 2024-01-23 | 杭州神彩包装印业有限公司 | Self-moisture-absorbing packaging bag and manufacturing process thereof |
| CN117429128B (en) * | 2023-12-20 | 2024-03-12 | 杭州神彩包装印业有限公司 | Self-moisture-absorbing packaging bag and manufacturing process thereof |
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| CN100390026C (en) | 2008-05-28 |
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