CN103786999B - Food liquid paper-plastic stick flexible packing material, box-packed white wine special box and production technology thereof - Google Patents
Food liquid paper-plastic stick flexible packing material, box-packed white wine special box and production technology thereof Download PDFInfo
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- CN103786999B CN103786999B CN201410021461.7A CN201410021461A CN103786999B CN 103786999 B CN103786999 B CN 103786999B CN 201410021461 A CN201410021461 A CN 201410021461A CN 103786999 B CN103786999 B CN 103786999B
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- 229920003023 plastic Polymers 0.000 title claims abstract description 130
- 239000004033 plastic Substances 0.000 title claims abstract description 130
- 239000000463 material Substances 0.000 title claims abstract description 43
- 238000012856 packing Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 235000013305 food Nutrition 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 235000020097 white wine Nutrition 0.000 title claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 147
- 239000004698 Polyethylene Substances 0.000 claims abstract description 55
- 229920001577 copolymer Polymers 0.000 claims abstract description 31
- 239000005977 Ethylene Substances 0.000 claims abstract description 30
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims abstract description 24
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims abstract description 20
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 238000007765 extrusion coating Methods 0.000 claims abstract description 13
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000000071 blow moulding Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 abstract description 17
- 230000004888 barrier function Effects 0.000 abstract description 14
- 239000000123 paper Substances 0.000 abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 9
- 239000011521 glass Substances 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000011888 foil Substances 0.000 abstract description 5
- 230000000593 degrading effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000010101 extrusion blow moulding Methods 0.000 abstract 1
- 235000021056 liquid food Nutrition 0.000 description 10
- 241001435619 Lile Species 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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- Wrappers (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a kind of food liquid paper-plastic stick flexible packing material, box-packed white wine special box and production technology thereof; comprise A, B, C, D, E layer; it is characterized in that: A is PE plastic protective layer; B is bonding glue-line; C is extrusion coating paper flaggy; D is bonding glue-line; E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, the production technology of food liquid paper-plastic stick flexible packing material of the present invention: its structure is PE/TIE/PA/EVOH/PA/TIE/PE seven-layer co-extrusion blow molding process and molding thickness is composited with cardboard between 0.06-0.08mm.Product of the present invention can substitute traditional glass bottle completely, alleviate the weight of packaging for foodstuff, thus reducing the consumption of production, traffic cost and the energy, this packing barrier layer instead of current aluminum foil metal is simultaneously that barrier layer reclaims the environmental issue of not easily degrading.
Description
technical field:
The present invention relates to a kind of food liquid paper-plastic stick flexible packing material, box-packed white wine special box and production technology thereof, belong to packing field.
background technology:
Existing liquid food major part all adopts glass bottle splendid attire, and this splendid attire mode not only causes higher production, traffic cost, and reusable glass bottle also also exists secondary pollution problems.The cleaning of reusable glass bottle in production process in addition, sterilization bring the loss of large water gaging, electricity, coal, and wherein the quantity discharged of sewage is maximum.
summary of the invention:
The object of the present invention is to provide a kind of liquid food paper-plastic stick flexible packing material and production technology thereof, the combination of this material is 5 layers of compound, moulds the low cost and other advantages of production Technology 7-9 layer compound than existing aluminium paper.Liquid food paper-plastic packaging box, bag are not only easy to manufacture, productive costs is low, and can ensure liquid food mouthfeel and shelf-life well; And this production technology is easy.
Food liquid paper-plastic stick flexible packing material of the present invention, it is characterized in that: comprise A, B, C, D, E, layer, A is PE plastic protective layer, B is bonding glue-line, C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
Further; above-mentioned food liquid paper-plastic stick flexible packing material; it is characterized in that: each layer material thickness is: A is PE plastic protective layer 0.012-0.015mm; B is bonding glue-line 0.008-0.012mm; C is extrusion coating paper flaggy 0.25-0.45mm; D is bonding glue-line 0.008-0.012mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.06-0.08mm.
Further; the best component of above-mentioned each layer material is: A is PE plastic protective layer 0.015mm, B is bonding glue-line 0.01mm, and C is extrusion coating paper flaggy 0.35mm; D is bonding glue-line 0.01mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.07mm.
The box-packed white wine special box that the present invention uses food liquid paper-plastic stick flexible packing material to make, it is characterized in that: the box wall of described packaging bag box includes A, B, C, D, E layer, A is PE plastic protective layer, B is bonding glue-line, C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
Further, described packaging bag box upper surface is provided with box mouth and lid, described box mouth is tubing string shape, top is screw thread mouth, bottom is provided with square sheet, and this square sheet is folded between ply of board and EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete, and in the middle part of described tubing string shape box mouth, inner edge is hinged with the sharp-pointed crotch of plastics, between the sharp-pointed crotch of plastics and seven-layer coextruded plastic rete, be covered with plastic membranous layer, plastic membranous layer has rectangular extension.
The production technology of the box-packed white wine special box of the present invention, it is characterized in that: first make EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete: by PE/TIE/PA/EVOH/PA/TIE/PE, component massfraction is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.The thickness going out blow molding process through seven-layer co-extrusion is the E layer of 0.06-0.08mm, seven layer materials are extruded by seven extruders respectively, through same mould superposition coextrusion one-shot forming seven layers of laminated film, after the laminated film this extruded carries out the air-cooled 30-50s of wind speed 1-2m/s, the impression that roll extrusion forms Triangular array is carried out through roll-pressing machine, the rotating speed of roll-pressing machine is 0.10-0.16m/s, and bowl temperature controls at 60-75 degree; Then there is the bonding glue-line of surface coating thickness 0.008-0.012mm of impression, ensure that adhesive glue temperature is between 32-40 degree, then paste the ply of board through impression process, large compared with laminated film of equilateral triangle on ply of board, ensures that the equilateral triangle on laminated film is absorbed in the equilateral triangle of ply of board; Last the bonding glue-line of coating thickness 0.008-0.012mm and PE plastic layer on ply of board again, ensure that adhesive glue temperature is between 32-40 degree equally.
Product of the present invention can substitute traditional glass bottle completely, alleviate the weight of liquid food packing, store convenient transportation (in packing material, weight only accounts for 5% ~ 10% of food weight) thus reduce the consumption of production, traffic cost and the energy, this packing barrier layer instead of current aluminum foil metal is simultaneously that barrier layer reclaims the environmental issue of not easily degrading, another aspect is conducive to the mouthfeel and the shelf-life that ensure liquid food, for drinking of customer is provided convenience.
accompanying drawing illustrates:
Fig. 1 is organigram of the present invention;
Fig. 2 is Fig. 1 box mouth place partial enlarged drawing;
Fig. 3 is the section-drawing of box wall;
Fig. 4 is the impression schematic diagram on E layer;
Fig. 5 is the impression schematic diagram of ply of board outside face.
detailed description of the invention:
Liquid food paper-plastic stick flexible packing material of the present invention, comprises A, B, C, D, E layer, and A is PE plastic printing layer, and B is bonding glue-line, and C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer.Structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
In order to ensure intensity and the barrier of this liquid food paper-plastic stick flexible packing material; the component of each layer material is: A is PE plastic protective layer 0.012-0.015mm; B is bonding glue-line 0.008-0.012mm; C is extrusion coating paper flaggy 0.25-0.45mm; D is bonding glue-line 0.008-0.012mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.06-0.08mm.
In order to improve intensity and the barrier of this liquid food paper-plastic stick flexible packing material further; the best component of each layer material is: A is PE plastic protective layer 0.015mm; B is bonding glue-line 0.01mm; C is extrusion coating paper flaggy 0.40mm; D is bonding glue-line 0.01mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.07mm.
The box-packed white wine special box that the present invention uses food liquid paper-plastic stick flexible packing material to make, the box wall of described packaging bag box includes A, B, C, D, E layer, A is PE plastic protective layer, B is bonding glue-line, C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
Described packaging bag box 1 upper surface is provided with box mouth 2 and lid 3, described box mouth is tubing string shape, top is screw thread mouth, bottom is provided with square sheet 4, this square sheet is folded between ply of board and EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete, in the middle part of described tubing string shape box mouth, inner edge is hinged with the sharp-pointed crotch 5 of plastics, and between the sharp-pointed crotch of plastics and seven-layer coextruded plastic rete, be covered with plastic membranous layer 6, plastic membranous layer has rectangular extension 7.
Ply of board outside face binds round from top to bottom and is provided with long narrow plastic strip 8, and the spacing of plastic strip is 3cm between two, wide 1 cm of plastic strip.
Above-mentioned ply of board and EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer surface are suppressed with Triangular array impression 9 respectively, and the inscribe circle diameter of described equilateral triangle is respectively 9-12mm and 5-8mm, and thickness is 0.02-0.03mm.Preferably the inscribe circle diameter of equilateral triangle is 10mm and 6mm, and the spacing of two two triangle incenters is 2.5 times of inscribed circle diameter.
The production technology of the box-packed white wine special box of the present invention, it is characterized in that: first make EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete: by PE/TIE/PA/EVOH/PA/TIE/PE, component massfraction is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.The thickness going out blow molding process through seven-layer co-extrusion is the E layer of 0.06-0.08mm, seven layer materials are extruded by seven extruders respectively, through same mould superposition coextrusion one-shot forming seven layers of laminated film, after the laminated film this extruded carries out the air-cooled 30-50s of wind speed 1-2m/s, the impression that roll extrusion forms Triangular array is carried out through roll-pressing machine, the rotating speed of roll-pressing machine is 0.10-0.16m/s, and bowl temperature controls at 60-75 degree; Then there is the bonding glue-line of surface coating thickness 0.008-0.012mm of impression, ensure that adhesive glue temperature is between 32-40 degree, then paste the ply of board through impression process, large compared with laminated film of equilateral triangle on ply of board, ensures that the equilateral triangle on laminated film is absorbed in the equilateral triangle of ply of board; Last the bonding glue-line of coating thickness 0.008-0.012mm and PE plastic layer on ply of board again, ensure that adhesive glue temperature is between 32-40 degree equally.
This liquid food paper-plastic stick flexible packing material production technology, through upper machine printing of getting the raw materials ready, coating, compound, glazing, production technology finally box processed or the bag → finished product that seal, cut.
EVOH (ethene, ethenol copolymer) applies maximum high barrier material.The film type of this material is except non-stretching type, also have biaxial tension type, aluminium-vapour deposition type, binder application type etc., add EVOH in the present invention and have fabulous barrier and fabulous processability to gas, the transparency, glossiness, mechanical strength, retractility, resistance to abrasion, resistance to cold and surface strength are all very excellent in addition.
The feature of liquid food---mouthfeel, fragrance and shelf-life mainly gas obstruct protection, and apply existing aluminium plastic paper box barrier material mainly by aluminum foil metal replace.And aluminum foil metal shortcoming: according to the show, China in 2004 amounts to and consumes Lile packaging 11,000,000,000, accounts for 10% of global total amount.According to each packing 10 grams calculating, these Lile packagings amount to 110,000 tons, and wherein aluminium accounts for 5%, 2,20,000 tons, pollute and there is common garbage problem.Current many experts think, first through various channels the harm of composite cardboard packaging should be informed customer, and suggestion customer drinks Tetrapack dress product less.Secondly Lile packaging produces more seriously, and the internal layer of this packing is aluminium, and this metal level is not easily degraded, and does not have better method of destruction at present, and pile up like a mountain to cause the Lile packaging discarded in certain areas.If things go on like this, once metallics permeate the ground can have influence on quality of groundwater, infiltrate soil can affect soil property.Because rural area or area, rurbania are often put in the stacking of this kind of rubbish, contaminated water and soil can pollute crops, livestock again, finally makes human health be endangered.And the present invention is by the environment-friendly materials with PE, EVOH-ethylene/vinyl alcohol copolymer, both can substitute traditional glass bottle packaging completely, and facilitate the carrying of customer, drink, avoid secondary pollution food-safety problem.Thus the more important thing is that instead of current plastic-aluminum paper composites aluminum foil metal is that barrier layer reclaims the harmfulness of not easily degrading.
According to light science and technology: the application of EVOH high barrier material in packaging for foodstuff in the past people selects metal or glass material as packaging for foodstuff, thus effectively isolate the infiltration of inside and outside various gas componant, to ensure quality and the commodity value of content.But as the second of high barrier plastic package material rare-the rare alcohol copolymer of second (EVOH) resin, replace these conventional packaging material more and more, and development is rapidly, future is vast, more and more receives the concern of industrial community.In recent years, food and drug safety problem frequently occurs, and affects the healthy and social stable development of people, causes the extensive concern of various circles of society.EVOH (ethylene-vinyl alcohol copolymer) high obstructing performance packing become the packaging of environment-friendly type in this context, renewable repeated usage, and refuse process can not produce any pollution to environment, are the first-selections of safety packaging thing.At present, global EVOH production firm is also few, is mainly Japan, the U.S..EVOH by internationally recognized nontoxic ep-type material as one, not only can improve the quality of life of people, also play an important role to environmental protection.EVOH(ethylene-vinyl alcohol copolymer): the iris action of polyvinyl processability and vinyl alcohol polymer is combined, ethylene-vinyl alcohol copolymer not only shows fabulous processing characteristics, and presents excellent blocking effect to gas, smell, spices, solvent etc.Have heat stability because same ethene combines, the laminated vessel containing EVOH barrier layer can reuse completely.These features just, make the plastic container containing EVOH barrier layer replace much glass and flexible packaging industry in packaging for foodstuff.
Claims (6)
1. a food liquid paper-plastic stick flexible packing material, it is characterized in that: comprise A, B, C, D, E, layer, A is PE plastic protective layer, B is bonding glue-line, C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
2. food liquid paper-plastic stick flexible packing material according to claim 1; it is characterized in that: each layer material thickness is: A is PE plastic protective layer 0.012-0.015mm; B is bonding glue-line 0.008-0.012mm; C is extrusion coating paper flaggy 0.25-0.45mm; D is bonding glue-line 0.008-0.012mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.06-0.08mm.
3. food liquid paper-plastic stick flexible packing material according to claim 1; it is characterized in that: the best component of each layer material is: A is PE plastic protective layer 0.015mm; B is bonding glue-line 0.01mm; C is extrusion coating paper flaggy 0.35mm; D is bonding glue-line 0.01mm, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete 0.07mm.
4. the box-packed white wine special box using food liquid paper-plastic stick flexible packing material to make, it is characterized in that: the box wall of described packing box includes A, B, C, D, E layer, A is PE plastic protective layer, B is bonding glue-line, C is extrusion coating paper flaggy, and D is bonding glue-line, and E is EVOH-ethylene/vinyl alcohol copolymer seven-layer co-extrusion high-isolating plastic membranous layer, structure is PE/TIE/PA/EVOH/PA/TIE/PE, and the thickness of this film is between 0.06-0.08mm; The component massfraction of E layer material is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%.
5. box-packed white wine special box according to claim 4, it is characterized in that: described packing box upper surface is provided with box mouth and lid, described box mouth is tubing string shape, top is screw thread mouth, bottom is provided with square sheet, this square sheet is folded between ply of board and EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete, in the middle part of described tubing string shape box mouth, inner edge is hinged with the sharp-pointed crotch of plastics, between the sharp-pointed crotch of plastics and seven-layer coextruded plastic rete, be covered with plastic membranous layer, plastic membranous layer has rectangular extension.
6. the production technology of a box-packed white wine special box as claimed in claim 4, it is characterized in that: first make EVOH-ethylene/vinyl alcohol copolymer seven-layer coextruded plastic rete: by PE/TIE/PA/EVOH/PA/TIE/PE, component massfraction is: PE plastic layer 12%-18%, TIE plastic layer 8%-10%, PA plastic layer 8%-9%, EVOH-ethylene/vinyl alcohol copolymer layer 8%-9%, PA plastic layer 8%-9%, TIE plastic layer 8%-10%, PE plastic layer 12%-18%; The thickness going out blow molding process through seven-layer co-extrusion is the E layer of 0.06-0.08mm, seven layer materials are extruded by seven extruders respectively, through same mould superposition coextrusion one-shot forming seven layers of laminated film, after the laminated film this extruded carries out the air-cooled 30-50s of wind speed 1-2m/s, the impression that roll extrusion forms Triangular array is carried out through roll-pressing machine, the rotating speed of roll-pressing machine is 0.10-0.16m/s, and bowl temperature controls at 60-75 degree; Then there is the bonding glue-line of surface coating thickness 0.008-0.012mm of impression, ensure that adhesive glue temperature is between 32-40 degree, then paste the ply of board through impression process, large compared with laminated film of equilateral triangle on ply of board, ensures that the equilateral triangle on laminated film is absorbed in the equilateral triangle of ply of board; Last the bonding glue-line of coating thickness 0.008-0.012mm and PE plastic layer on ply of board again, ensure that adhesive glue temperature is between 32-40 degree equally.
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| CN107618725A (en) * | 2017-09-28 | 2018-01-23 | 上海界龙永发包装印刷有限公司 | Packing box with visual window and preparation method thereof |
| CN109263158A (en) * | 2018-10-12 | 2019-01-25 | 江阴升辉包装材料有限公司 | A kind of non-woven fabric compounded film and its application |
| CN114379158B (en) * | 2022-01-20 | 2022-08-30 | 广州市瑞高包装工业有限公司 | Waterproof paper-plastic composite hose and preparation method thereof |
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