CN2452913Y - Package bag made biaxial anti-stretching compound film - Google Patents
Package bag made biaxial anti-stretching compound film Download PDFInfo
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- CN2452913Y CN2452913Y CN 00244468 CN00244468U CN2452913Y CN 2452913 Y CN2452913 Y CN 2452913Y CN 00244468 CN00244468 CN 00244468 CN 00244468 U CN00244468 U CN 00244468U CN 2452913 Y CN2452913 Y CN 2452913Y
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- plastic film
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Abstract
The utility model provides a package bag made of a bidirectional anti-stretching compound film. The utility model comprises a barrel-shaped bag body; the barrel-shaped bag body is made of bidirectional anti-stretching compound film; the bidirectional anti-stretching compound film is provided with at least one layer of warp-wise unidirectional stretching plastic film and at least one layer of weft-wise unidirectional stretching plastic film or at least one layer of plastic film whose warp-wise tensile strength is higher than weft-wise tensile strength and at least one layer of plastic film whose weft-wise tensile strength is higher than warp-wise tensile strength. The utility model has the advantages of high strength, no leakage, antiskid, raw material saving, and good film performance. Therefore, the package can realize automation. The package bag can be recovered and used again, which is good for the environmental protection.
Description
The utility model relates to a kind of packaging bag, particularly be a kind of Bidiretional tension-resistant packing bag of composite plastic film.
With plastic film or multi-layer co-extruded plastic film packing as food, chemical etc., the consumption in 1 year in the whole world is at least more than 1,000 ten thousand tons, people are in order to economize on resources and cost-cutting, made full use of plastic film more than the glassy state temperature, the following hot-stretch of viscous state temperature can increase the characteristic of 5 to 15 times of these High molecular materials of tensile strength, various packing are produced in plastic film unilateral stretching or biaxial tension, these materials appear on the market in a large number, in various packaging fields, bring into play enormous function, also saved ample resources.
But the diaphragm of unilateral stretching, just high molecularly align thereby increased 5 to 15 times of tensile strengths producing along draw direction, but be significantly less than robber before not stretching at the tensile strength of another direction that does not stretch, and the utmost point tearing of anti-this direction not.Therefore the less packing that is used for of this class unilateral stretching film is used as tie string for general.If will be used for packing, generally the film cutting must be stretched as the method production woven cloth that fillet is knitted with warp, weft knitting, for waterproof and antiseep, need again to using behind its multiple film.At present this multiple film woven cloth is still the main packing that consumption is big, purposes is wide, intensity is high.Its application has been saved a lot of resources than traditional plastic film or multi-layer co-extruded plastic film.
But along with the increase of labor wage and processing charges, in addition knitting process be the consumption worker, expend, processing consuming time, the tooling cost that the cost of raw material originally has been increased is offset.The packing of the braiding dry goods of film differs too big because of knitting and multiple rete fusion index and mol wt again in addition, and the recycling rate is very low, and cost recovery is also high, and this discarded class packing has become the environmental protection public hazards, becomes global problem.Because of also there not being better method to solve,,, the trend of using the conventional plastic diaphragm or adopting multi-layer co-extruded plastic film as far as possible of getting back to is arranged again in the world so that packing is convenient to reclaiming or is utilized for the reason of environmental protection.
When increasing this characteristic of tensile strength, there is a kind of important biaxial tension plastic film that no small effect is played in the saving of raw material utilizing the Polymer stretch orientation to arrange.It also is the packing that a kind of consumption is big, purposes is wide.This biaxial tension plastic film is that Polymer that the year diaphragm that will extrude that curtain coating (comprising which floor coextrusion curtain coating) cooling makes carries out several times of linear speeds through the roll-type heat stretching machine on warp-wise (vertically) stretching has obtained this direction aligns and obtained tensile strength times over the unstretching film sheet, continuing to give the expanding heat stretching machine carries out several times of width on broadwise (laterally) stretching with this film that has stretched then also obtains Polymer in this direction again and aligns and obtain tensile strength times over the unstretching film sheet, all have at both direction through the diaphragm of this biaxial tension to be higher than the tensile strength of unstretching film sheet more than several times, this film is used for food in a large number, clothing, stationery, the packing of books etc.
The biaxial tension plastic film also has another kind of method production to make.It is to adopt the blown film form to become the periosteum sheet, in periosteum, charge into pressurized air, the Polymer that under heating state periosteum is carried out through the stretching of, latitude both direction and obtain both direction aligns and at both direction the tensile strength that is higher than several times of unstretching film sheets is arranged all, and this film and above-mentioned film purposes are much the same.But these films have a fatal defective, are exactly stress mouth peel strength extreme difference, and the stress mouth is torn does not have intensity, has hindered application and scope greatly.
The diaphragm that also has multiple film after a kind of unilateral stretching in addition, hope can some improvement to the stress mouth tear resistance of biaxial stretching film, it will carry out compound through one deck plastic film of warp direction stretching and the plastic film that does not stretch, wish by the unstretching film sheet more even because of all directions intensity, there is certain lear energy to remedy the defective that the warp direction stretching film does not almost have intensity easily to tear in broadwise, this film also has certain purposes, require in the packaging field certain purposes is arranged preferably at the warp-wise tensile strength especially, but its tear resistance still just is based upon on the only index of unstretching film material, produces this property of tensile strength more than 5 to 15 times for making full use of the arrangement of Polymer stretch orientation.
In view of above reason, the purpose of this utility model is in order to overcome above deficiency, a kind of intensity height to be provided, and is non-leakage, anti-skidding, save material, film properties is good, and packing can realize automation, applied range, recyclable utilization is beneficial to the Bidiretional tension-resistant packing bag of composite plastic film of environmental protection.
The purpose of this utility model is achieved like this:
The utility model packaging bag comprises the tubular bag, sealing arranged on the tubular bag or have discharge port the bag end, breakdown is arranged or the sack of filling exit is arranged, the tubular bag is made by the bidirectional tensile plastic composite film sheet, have in the bidirectional tensile plastic composite film sheet one deck warp-wise unilateral stretching plastic film at least and at least one deck broadwise unilateral stretching plastic film or have one deck warp-wise tensile strength at least be higher than the plastic film of broadwise tensile strength and at least one deck broadwise tensile strength be higher than the plastic film of warp-wise tensile strength, the warp-wise tensile strength is higher than the plastic film of broadwise tensile strength, or the broadwise tensile strength plastic film that is higher than the warp-wise tensile strength is to form plastic film is stretched, and the warp-wise tensile strength is higher than the plastic film of broadwise tensile strength or plastic film that the broadwise tensile strength is higher than the warp-wise tensile strength is respectively to be extruded by extruder by at least two kinds of different materials to form.
Also have the plastic film of the unstretched heat sealability excellence of one deck at least in the above-mentioned bidirectional tensile plastic composite film sheet, have fusion and connect and the anti-function that punctures.
Above-mentioned bidirectional tensile plastic composite film sheet is at least simultaneously gone up pile to be had anti-skidding and concavo-convex muscle line that gain in strength.
Above-mentioned bidirectional tensile plastic composite film sheet is the jointless plastic film of tubular.
Above-mentioned bidirectional tensile plastic composite film sheet is a flat diaphragm, and the tubular bag is with back welding of flat diaphragm overlap joint and/or bonding forming.
Compound film sheet in the packaging bag of the utility model compound film sheet after on, latitude both direction, all having brought into play plastics unilateral stretching Polymer and having aligned tensile strength than the stretched plastic diaphragm is not high 5 to 15 times, bidirectional stretch intensity height, compound film sheet has also adopted the plastic film of the unstretched heat sealability excellence of one deck at least, more conveniently seals and is connected.
The utility model packaging bag tensile strength height, non-leakage, anti-skidding, save material, film properties is good, and packing can realize automation, applied range, recyclable utilization is beneficial to environmental protection.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Fig. 1 is compound film sheet structural representation Fig. 1.
Fig. 2 is diaphragm 1 structural representation shown in Figure 1.
Fig. 3 is diaphragm 2 structural representations shown in Figure 1.
Fig. 4 is compound film sheet structural representation Fig. 2.
Fig. 5 is compound film sheet structural representation Fig. 3.
Fig. 6 is compound film sheet structural representation Fig. 4.
Fig. 7 is compound film sheet structural representation Fig. 5.
Fig. 8 is a package construction scheme drawing 1.
Fig. 9 is a packaging bag enclosing constitution diagram shown in Figure 8.
Figure 10 is a package construction scheme drawing 2.
Figure 11 is a package construction scheme drawing 3.
Figure 12 is a package construction scheme drawing 4.
Figure 13 is the block diagram of Figure 12.
Figure 14 is a package construction scheme drawing 5.
Figure 15 is an I portion enlarged drawing among Figure 14.
Fig. 1 is flat film compound film sheet structural representation.Fig. 4 is the jointless compound film sheet structural representation of tubular.
The acrylic plastering diaphragm 1 that the warp-wise tensile strength is higher than the broadwise tensile strength is plastic film tubular diaphragm or flat diaphragm through the warp direction stretching orientation more than the glassy state temperature of plastics, below the viscous state temperature.Can adjust the high molecular intensity that aligns of warp direction stretching direction because of warp direction stretching multiple and draft temperature, draw speed etc., and the tensile strength size of warp-wise can be regulated, also can be according to need (such as the tear resistance that suitably needs to improve broadwise) and suitably keep the tensile strength of certain diaphragm broadwise, the diaphragm that obtains like this is that the warp-wise tensile strength is higher than the broadwise tensile strength.The higher diaphragm material of broadwise tensile strength is an acrylic plastering 3, also be as warp direction stretching method and condition, diaphragm is carried out broadwise to stretch, be higher than the warp-wise tensile strength and obtain the broadwise tensile strength, the diaphragm that this warp-wise and broadwise each have than high-tensile is the bonding of ethene one acetate ethylene copolymer 2 through bonding material, makes compound film sheet all advantages of higher tensile strength arranged and become the bidirectional stretch composite plastic diaphragm at warp, latitude both direction.Because of all being to bear stretching resistance and be agglomerated into one upwards respectively, make its tear-resistant performance and tensile strength and unstretching film and biaxial stretching film ratio that great raising be arranged by the unilateral stretching film at warp, latitude.In order to improve the flexible tear resistance and the heat sealability of the higher compound film sheet 3 of higher compound film sheet of warp-wise tensile strength 1 and broadwise tensile strength, extruding blown film cooling when producing diaphragm 1 and diaphragm 3, extrude the complex film that makes 2 layers of co-extrusion with multi-layer co-extruded machine, the stretching of process warp direction stretching and broadwise is at last compound as stated above respectively again is compound film sheet 1 shown in Figure 1 and compound film sheet 2.Referring to Fig. 2, Fig. 3, diaphragm 1 is one deck by high density polyethylene (HDPE) 4 and linear polyethylene 5 coextrusion, and diaphragm 3 is one deck by high density polyethylene (HDPE) 6 and linear polyethylene 7 coextrusion.
Fig. 5 has provided another structural representation of compound film sheet.In order to make compound film sheet be used to pack bag and more convenient when sealing.The plastic layer that need seal, seam has the easy welding of one deck, on compound film sheet basis shown in Figure 1, promptly be higher than on the plastic film 8 of broadwise tensile strength and plastic film 9 that the broadwise tensile strength is higher than the warp-wise tensile strength compound film sheet compound and melt extrude not stretched plastic diaphragm 11 by adhesive agent 10 at the warp-wise tensile strength.(get on the hot-rolling pressure is compound after also can producing a skim earlier, also can add one deck adhesive layer again) in the centre.
Fig. 6 has provided a structural representation again of compound film sheet.The warp-wise tensile strength that adopts high-density polyethylene material to make is higher than to be had anti-skidding and concavo-convex muscle line 13 that gain in strength on the plastic film 12 of broadwise tensile strength, concavo-convex muscle line is that this diaphragm is unstretched preceding when the fusion extrusion casting flat diaphragm, or the concavo-convex groove that has by the extruded film head when blown film is extruded stays on the diaphragm when the film moulding, and the general concavo-convex discrepancy in elevation is 1/3 to 1/2 of this tunic.This broadwise tensile strength that has higher plastic film 12 of the warp-wise tensile strength of concavo-convex muscle line and high-density polyethylene material to make is higher than between the plastic film 14 of warp-wise tensile strength becomes the bidirectional stretch composite plastic diaphragm by ethene-acetate ethylene copolymer adhesive layer 15 bondings.
Fig. 7 has provided the another structural representation of compound film sheet.The broadwise tensile strength that adopts high-density polyethylene material to make is higher than the plastic film 16,17 of warp-wise tensile strength, and 18 of the plastic films that the warp-wise tensile strength is higher than the broadwise tensile strength have ethene-acetate ethylene copolymer adhesive layer 19,20 respectively.The not stretched plastic diaphragm 21 that compound one deck linear polyethylene material is made on plastic film 16.
Embodiment 1:
Fig. 8, Fig. 9 have provided embodiment 1 structural representation.This packaging bag is the packaging bag made from one of Fig. 1～bidirectional tensile plastic composite film sheet shown in Figure 7, the tubular bag 22 that this bag adopts tubular bidirectional tensile plastic composite film sheet to make, the below of bag is the bag end 23, at the bottom of adopting method of heating such as high frequency to seal bag, the heat-sealing sack generally is to seal after packing material is packed into again, the 24th, and the heat-sealing sack.Seal the bag end and sack when this bag can be packed with the tubular bidirectional tensile plastic composite film sheet of rolling and form packaging bag on automatic packaging line, the diaphragm of use can have the plastic membranous layer that also can not have unstretched heat sealability excellence.
Embodiment 2:
Figure 10 has provided embodiment 2 structural representations.Present embodiment 2 packaging bag tubular bags 25 are to have adopted tubular bidirectional tensile plastic composite film sheet, the socket self-sealing filling exit 26 that has plastic film to make, and this plastic film is sewed on or is bonded on the tubular compound film sheet.The heat-sealing bag end 27 and heat-sealing sack 28 (diaphragm of use can have the plastic membranous layer of the heat sealability excellence that also can not stretch) are arranged.
Embodiment 3:
Figure 11 has provided embodiment 3 structural representations.This is the flexible freight container of 0.5 ton, 1 ton and 2 tons article of packing.Comprise the tubular bag 29 that adopts bidirectional stretch tubular composite plastic film sheet to make, thick 1 to 2 times of the pouch diaphragm of 25 kilograms or the 50 kilograms dresses that compound film sheet is more common.30 is that cylindrical sheet with bag is folded into and after square back adds coating adhesive with the flat film compound film sheet of bidirectional stretch burst is bonded (or the surface has the flat film compound film sheet heat-sealing of bidirectional stretch of heat sealability excellence to form) at the bottom of this bag.Suspender belt 31 is that unilateral stretching diaphragm or arrowband are made, can be with 0.5 ton to 2 tons goods packing and handling by catching the bottom.Sequence number 32 is sacks of the band filling exit made of bidirectional tensile plastic composite film sheet or general plastic film.This bag can be packed the chemical that antiseep is had relatively high expectations.
Embodiment 4:
Figure 12,13 has provided embodiment 4 structural representations.Tubular bag 33 be with flat film compound film sheet become on the tube Bag Making Machine with the diathermic heating mode extrude molten plastic or the adhesive agent mode with the welding of diaphragm lap-joint or bond together.The heat-sealing bag ends 34 usefulness diathermic heating mode seals.The diaphragm that uses can have the plastic membranous layer that also can not have unstretched heat sealability excellence.Sequence number 35 is sacks.
Embodiment 5:
Figure 14, Figure 15 have provided embodiment 5 structural representations.Present embodiment 5 is basic same with embodiment 1.Not existing together is the concavo-convex muscle line 37 that pile is arranged and gain in strength on the outer diaphragm of tubular bag 36.
More than these packaging bags, can be widely used in the packing of food, chemical industry, mineral products, far products, feed etc., the packaging bag made from traditional composite plastic diaphragm and traditional multiple film woven bag ratio, have the intensity height, non-leakage, anti-skidding, save material, film properties is good, convenient printing, packing can realize automation, applied range, recyclable utilization, is beneficial to the advantage of environmental protection.It is a kind of composite packaging of excellent performance.
Claims (5)
1, Bidiretional tension-resistant packing bag of composite plastic film, it is characterized in that packaging bag comprises the tubular bag, sealing arranged on the tubular bag or have discharge port the bag end, breakdown is arranged or the sack of filling exit is arranged, the tubular bag is made by the bidirectional tensile plastic composite film sheet, and one deck warp-wise unilateral stretching plastic film at least and one deck broadwise unilateral stretching plastic film or have one deck warp-wise tensile strength at least to be higher than the plastic film that the plastic film of broadwise tensile strength and one deck broadwise tensile strength at least are higher than the warp-wise tensile strength are at least arranged in the bidirectional tensile plastic composite film sheet.
2, Bidiretional tension-resistant packing bag of composite plastic film according to claim 1 is characterized in that in the bidirectional tensile plastic composite film sheet also having the plastic film of the unstretched heat sealability excellence of one deck at least.
3, Bidiretional tension-resistant packing bag of composite plastic film according to claim 1 and 2 is characterized in that the bidirectional tensile plastic composite film sheet has the concavo-convex muscle line that pile is anti-skidding and gain in strength on the one side at least.
4, Bidiretional tension-resistant packing bag of composite plastic film according to claim 1 and 2 is characterized in that the bidirectional tensile plastic composite film sheet is the jointless plastic film of tubular.
5, Bidiretional tension-resistant packing bag of composite plastic film according to claim 1 and 2 is characterized in that the bidirectional tensile plastic composite film sheet is a flat diaphragm, and the tubular bag is with back welding of flat diaphragm overlap joint and/or bonding forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244468 CN2452913Y (en) | 2000-09-19 | 2000-09-19 | Package bag made biaxial anti-stretching compound film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00244468 CN2452913Y (en) | 2000-09-19 | 2000-09-19 | Package bag made biaxial anti-stretching compound film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2452913Y true CN2452913Y (en) | 2001-10-10 |
Family
ID=33604138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00244468 Expired - Fee Related CN2452913Y (en) | 2000-09-19 | 2000-09-19 | Package bag made biaxial anti-stretching compound film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2452913Y (en) |
-
2000
- 2000-09-19 CN CN 00244468 patent/CN2452913Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |