CN102198746B - Adhesive-free aluminium and plastic compounded polyethylene film and manufacturing method thereof - Google Patents

Adhesive-free aluminium and plastic compounded polyethylene film and manufacturing method thereof Download PDF

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CN102198746B
CN102198746B CN 201110067768 CN201110067768A CN102198746B CN 102198746 B CN102198746 B CN 102198746B CN 201110067768 CN201110067768 CN 201110067768 CN 201110067768 A CN201110067768 A CN 201110067768A CN 102198746 B CN102198746 B CN 102198746B
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glue
polyethylene film
free
plastic
aluminum
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CN102198746A (en
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袁志庆
王剑
李铁山
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Hunan yiyongfeng New Material Technology Co.,Ltd.
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HUNAN YIYONGFENG PRINGTING PACKAGING CO Ltd
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Abstract

The invention discloses an adhesive-free aluminium and plastic compounded polyethylene film and a manufacturing method thereof. The polyethylene film comprises an adhesive-free compounding layer contacting an external aluminium foil, a main body layer in the middle and an inner heat-sealing layer, wherein a gecko foot-like nano-array structure is arranged on the outer surface of the adhesive-free compounding layer. The manufacturing method comprises the following steps of: firstly, uniformly mixing raw materials for manufacturing each layer respectively according to a formula; secondly, injecting a raw material mixture into an extruder and processing the mixture into a raw material melt; thirdly, filtering the raw material melt, distributing flow passages and extruding the raw material melt from a mould head to obtain a coextruded compound film billet and extending the film billet to obtain a semifinished product with corresponding thickness; fourthly, processing the nano-array structure on the adhesive-free compounding layer of the semifinished product by a nano stamping technology; and finally, cooling and performing corona treatment or flame treatment to obtain a finished product of the adhesive-free aluminium and plastic compounded polyethylene film. The polyethylene film has the advantages of strong early bonding force, high peeling strength, low cost and resource saving; and the manufacturing process is simple, safe and environment-friendly.

Description

Plastic-aluminum is glue-free compound with polyethylene film and preparation method thereof
Technical field
The invention belongs to packaging material and preparing technical field thereof, relate in particular to a kind of aluminum-plastic composite membrane packaging material and preparation method thereof.
Background technology
In the modern goods packaging process, the packing of some commodity (especially food and medicine), various performances for packaging material have strict requirement, as require packaging material have protection against the tide, waterproof, obstruct gas, lucifuge, heat-resisting, oil resistant, high temperature resistant, be easy to heat-sealing, be easy to printing etc.Single packaging material are difficult to reach multinomial requirement, and therefore, in the production process of packaging material, the packaging material that usually two or more had different qualities are combined with each other, and utilize their good combination properties, to reach the requirement of commodity packaging.Compound package material commonly used is mainly various laminated films, namely take flexible packages such as paper, glassine paper, plastic sheeting, metal formings as basic material, through compound, the resulting flexibility compound package materials with combination property of various combined machining methods such as lamination is compound, coextru-lamination of coating.Wherein, aluminum-plastic composite membrane is due to the favor that has very excellent barrier, waterproof and dampproof property, printability and heat sealability etc. and be subject to packaging industry and user, proportion reaches more than 50% in flexible package composite material, nearly 5,000,000 tons of the annual production of present aluminium plastic composite packaging material.
Yet traditional aluminum-plastic composite membrane needs intermediate layer-adhesive layer, forms aluminum-plastic composite membrane thereby namely need to use intermediate layer with bonding force that aluminium foil and plastic sheeting are bonded together.At present industrial mainly contain for plastic-aluminum combined method following several:
1) glue method: be divided into dry laminating again and wet method is compound according to the difference of combination process, so-called wet method is compound is that adhesive is uniformly coated in aluminium foil or plastic sheeting substrate, then aluminium foil and plastic sheeting is compound under certain pressure, then by baking oven, the solvent evaporates in adhesive is fallen; And dry laminating refers to adhesive is evenly coated in aluminium foil or plastic sheeting substrate, and is compound under certain pressure again after with solvent evaporates in adhesive by baking oven; Yet, being that dry laminating or wet method are compound all needs to use a large amount of organic solvents, according to statistics, annual nearly 40,000 tons of the compound solvent type adhesive of packaging material that is used for of China, rough estimation, annual organic solvent total amount consumed is no less than 60,000 tons, and the sizing material that really plays adhesive effect only has more than 25,000 ton, will consume so a large amount of organic solvent every year, at first this caused the serious wasting of resources, runs counter to the current resource saving economy development model of advocating; Secondly, this also causes the production cost of wrapping enterprise greatly to improve, press the approximately calculation of price of 8,000 yuan of present organic solvent per ton, the amount of money that expends on organic solvent every year of wrapping enterprise in the whole nation is just up to 400,018,000 yuan, and only the cost payout of one, adhesive will so improve (than the method without organic solvent) more than 40%; In addition, the organic solvent emission that has in a large number penetrating odor, not only can cause abominable production environment, but also the respiratory apparatus that may stimulate shop personnel, affect production safety, namely enable all organic solvents all are discharged into outdoor, this also can pollute atmospheric environment, does not meet the current environmental type sustainable development idea of advocating; In today of more and more paying attention to low-carbon (LC), health, safety and environmental protection, resources conservation and green ecological, more and more received people's concern to consuming the negative effect that like this a large amount of organic solvent brings;
2) solvent-free composite algorithm: namely there is no solvent in adhesive, use this method environmentally safe, yet the initial bonding strength of this method gained joint product is extremely low, can not satisfy actual operation requirements;
3) precoating method: be about to PUR and be coated in advance on film, during use, as long as with film and aluminium foil hot pressing, this method also can be without solvent, but operation is more, the increase cost.
In addition, the composite packing film that above-mentioned various existing methods make, the time dependence of its tack coat peel strength is more obvious.Therefore, those skilled in the art are being devoted to pack the improvement and bring new ideas with aluminum-plastic composite membrane product and combination process thereof always.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provide that a kind of initial bonding strength is strong, peel strength is large, the glue-free compound polyethylene film of using of plastic-aluminum with low cost, resource-effective, also correspondingly provide that a kind of preparation technology is simple, preparation cost is little, process safety is good and the glue-free compound preparation method with polyethylene film of plastic-aluminum environmental protection.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is the glue-free compound polyethylene film of using of a kind of plastic-aluminum, described polyethylene film includes and the contacted glue-free composite bed of external application aluminium foil, the body layer of centre and the hot sealing layer of nexine from outside to inside, and the outer surface of described glue-free composite bed is provided with the nano array structure of similar gecko pin.The heat sealing of endosexine when described hot sealing layer generally is used for the bag packing, this layer can directly contact by content when packing; Described body layer is the intermediate layer of polyethylene film of the present invention, and it mainly plays the content that stops after packing and directly directly contacts with aluminium foil of packing external application, has the effects such as anticorrosive, waterproof, protection against the tide; Described glue-free composite bed is mainly used in that the aluminium foil of external application carries out glue-free compound when packing.
Above-mentioned plastic-aluminum is glue-free compound with in polyethylene film, and described nano array structure comprises preferably the nanoscale protrusion that is array distribution.The spacing of described nanoscale protrusion is preferably 1nm~50nm.The height of described nanoscale protrusion is preferably 40nm~100nm.Described nanoscale protrusion preferably arranges and is cylindrical or cuboid.When being set to cylindrical, the bottom surface diameter of described cylindrical nanoscale protrusion is preferably 10nm~80nm; When being set to cuboid, the bottom width of described cuboid nanoscale protrusion is preferably 10nm~80nm.
Above-mentioned plastic-aluminum is glue-free compound with in polyethylene film, and the thickness of described glue-free composite bed, body layer and hot sealing layer all is preferably 0.001 μ m~20 μ m.
Above-mentioned plastic-aluminum is glue-free compound with in polyethylene film, the preferred main raw material blend moulding by following mass fraction of described glue-free composite bed:
50%~95% ethylene-vinyl acetate copolymer,
0.1%~10% antioxidant 1010,
0.1%~10% silica,
0.1%~20% oleamide,
0.1%~5% calcium carbonate,
0.5%~30% titanium dioxide and
0.2%~20% glycerin monostearate.
Above-mentioned plastic-aluminum is glue-free compound with in polyethylene film, the preferred main raw material blend moulding by following mass fraction of described body layer:
30%~90% crystalline polyethylene and
10%~70% ethylene/alpha-olefin random copolymer.
Above-mentioned plastic-aluminum is glue-free compound with in polyethylene film, the preferred main raw material blend moulding by following mass fraction of described hot sealing layer:
50%~95% low density polyethylene (LDPE),
0.1%~10% antioxidant 1010,
0.1%~10% silica,
0.1%~20% oleamide,
0.1%~5% calcium carbonate,
0.5%~30% titanium dioxide and
0.2%~20% glycerin monostearate.
as a total technical conceive, the present invention also provides a kind of above-mentioned plastic-aluminum glue-free compound preparation method with polyethylene film, specifically comprise the following steps: will be respectively used to prepare described glue-free composite bed, the various raw materials of body layer and hot sealing layer (comprising main material and various functional aid) mix and stir by formula, the raw mix of each layer after then stirring injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer more after filtration, runner distributes and die head is extruded, form the composite membrane base of coextrusion, the polyethylene film semi-finished product of the stretched formation respective thickness of composite membrane base, then adopt nanometer embossing to process described nano array structure on the half-finished glue-free composite bed of described polyethylene film, finally by cooling, sided corona treatment or flame treatment harvest parent roll, obtain the glue-free compound polyethylene film finished product of using of plastic-aluminum.In concrete application, parent roll can pass through Ageing Treatment, cuts at last or obtains various film articles through cutting again.
Compared with prior art, the invention has the advantages that:
the glue-free compound glue-free composite bed with polyethylene film of plastic-aluminum of the present invention can be directly and aluminium foil realize glue-free compound: in concrete application, glue-free composite bed in polyethylene film of the present invention can produce bond properties when being heated to 60 ℃~100 ℃, in the situation that the surface does not arrange nano array structure, its bonding force is difficult to satisfy compound needed bonding strength, in order to improve bonding force, the present invention creatively goes out the nano array structure (gecko pin be exactly rely on its pin, countless nanometer bristle configurations realizes it with the superpower bonding of body surface and adsorbs) of similar gecko pin in glue-free composite bed Surface Machining, through our experiment and observation repeatedly, this nano array structure just can be realized firmly being combined with any smooth solid under without any the prerequisite of glue, the thin film composition of adding glue-free composite bed originally will produce adhesive effect under the condition of heating, as seen, the Surface Machining that will have bonding force becomes the nano array structure of similar gecko pin can greatly improve its bonding force undoubtedly, to satisfy the needs of aluminium plastic membrane laminating production, in concrete combination process operating process, only need aluminium foil and polyethylene film of the present invention are processed by a pair of cylinder (temperature is 60 ℃~100 ℃) of heating up and down, just can realize the recombination process of polyethylene film of the present invention and aluminium foil under the temperature and pressure effect of cylinder, whole application operating process is relatively simple, can greatly reduce organic solvent and binding agent are used, the consumption of resource and the energy all greatly reduces, production cost also further reduces, and economic benefit obviously improves,
2. the glue-free compound initial bonding strength with polyethylene film of plastic-aluminum of the present invention is strong, and peel strength is large, can satisfy better the requirement of packaging material on mechanical property;
3. coextrusion preparation technology of the present invention is simple, due to a large amount of uses of having avoided the chemical reagent such as organic solvent, not only more is conducive to ensure producers' health and safety, and the pollution of environment is reduced greatly, and environmental protection is easy to promotion and application.
Description of drawings
Fig. 1 is the glue-free compound top view (partial view) with polyethylene film of plastic-aluminum of the present invention.
Fig. 2 is the cutaway view at A-A place in Fig. 1.
Marginal data:
1, glue-free composite bed;
2, body layer;
3, hot sealing layer;
4, nanoscale protrusion.
The specific embodiment
Embodiment 1:
The glue-free compound polyethylene film of using of a kind of plastic-aluminum of the present invention as shown in Figure 1 and Figure 2, this polyethylene film includes and the contacted glue-free composite bed 1 of external application aluminium foil, the body layer 2 of centre and the hot sealing layer 3 of nexine from outside to inside, and the outer surface of glue-free composite bed 1 is provided with the nano array structure of similar gecko pin.In the present embodiment, the thickness of glue-free composite bed 1, body layer 2 and hot sealing layer 3 is 5 μ m.Nano array structure includes the nanoscale protrusion 4 that is array distribution.The spacing W of nanoscale protrusion 4 is 5nm.The height H of nanoscale protrusion 4 is 50nm.Nanoscale protrusion 4 arranges and is cylindrical (also can be cuboid), and the bottom surface diameter D of this cylindrical nanoscale protrusion is 10nm.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of glue-free composite bed 1:
95% ethylene-vinyl acetate copolymer,
0.5% antioxidant 1010,
1% silica,
0.5% oleamide,
2% calcium carbonate,
0.5% titanium dioxide and
0.5% glycerin monostearate.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, and body layer 2 is mainly by the raw material blend moulding of following mass fraction: 90% crystalline polyethylene and 10% ethylene/alpha-olefin random copolymer.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of hot sealing layer 3:
95% low density polyethylene (LDPE),
0.3% antioxidant 1010,
1.2% silica,
0.5% oleamide,
1.5% calcium carbonate,
1% titanium dioxide and
0.5% glycerin monostearate.
the plastic-aluminum of the present embodiment is glue-free compoundly specifically to be prepared by following steps with polyethylene film: will be respectively used to prepare above-mentioned glue-free composite bed 1, the various raw materials of body layer 2 and hot sealing layer 3 (comprising the above main material organic polymer of listing and various functional aid) mix and stir by above-mentioned formula, the raw mix of each functional layer after then stirring injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer transmits through pipeline again, filter filters, runner distributes and die head is extruded, form the composite membrane base of coextrusion, the polyethylene film semi-finished product of the stretched formation respective thickness of composite membrane base, then adopt nanometer embossing to process the nano array structure of corresponding size on the half-finished glue-free composite bed 1 of polyethylene film, finally by cooling, sided corona treatment or flame treatment harvest parent roll, obtain the glue-free compound polyethylene film finished product of using of plastic-aluminum.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is colorless and transparent film.
Compoundly carry out compound with polyethylene film and aluminium foil with the plastic-aluminum of the present embodiment is glue-free, the polyethylene film of aluminium foil and the present embodiment is processed by a pair of cylinder of heating up and down (temperature 60 C~100 ℃), can be realized compound under the temperature and pressure effect of cylinder.Test the composite effect of the present embodiment polyethylene film by the peel test of routine, its bonding force can satisfy the bonding strength requirement that packing is used aluminium plastic composite material fully.
Embodiment 2:
The glue-free compound polyethylene film of using of a kind of plastic-aluminum of the present invention as shown in Figure 1 and Figure 2, this polyethylene film includes and the contacted glue-free composite bed 1 of external application aluminium foil, the body layer 2 of centre and the hot sealing layer 3 of nexine from outside to inside, and the outer surface of glue-free composite bed 1 is provided with the nano array structure of similar gecko pin.In the present embodiment, the thickness of glue-free composite bed 1, body layer 2 and hot sealing layer 3 is 5 μ m.Nano array structure includes the nanoscale protrusion 4 that is array distribution.The spacing W of nanoscale protrusion 4 is 8nm.The height H of nanoscale protrusion 4 is 60nm.Nanoscale protrusion 4 arranges and is cylindrical (also can be cuboid), and the bottom surface diameter D of this cylindrical nanoscale protrusion is 15nm.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of glue-free composite bed 1:
93.5% ethylene-vinyl acetate copolymer,
0.5% antioxidant 1010,
1% silica,
0.5% oleamide,
3% calcium carbonate,
1% titanium dioxide and
0.5% glycerin monostearate.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, and body layer 2 is mainly by the raw material blend moulding of following mass fraction: 89% crystalline polyethylene and 11% ethylene/alpha-olefin random copolymer.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of hot sealing layer 3:
94.5% low density polyethylene (LDPE),
0.5% antioxidant 1010,
1.5% silica,
0.5% oleamide,
1.5% calcium carbonate,
1% titanium dioxide and
0.5% glycerin monostearate.
the plastic-aluminum of the present embodiment is glue-free compoundly specifically to be prepared by following steps with polyethylene film: will be respectively used to prepare above-mentioned glue-free composite bed 1, the various raw materials of body layer 2 and hot sealing layer 3 (comprising the above main material organic polymer of listing and various functional aid) mix and stir by above-mentioned formula, the raw mix of each functional layer after then stirring injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer transmits through pipeline again, filter filters, runner distributes and die head is extruded, form the composite membrane base of coextrusion, the polyethylene film semi-finished product of the stretched formation respective thickness of composite membrane base, then adopt nanometer embossing to process the nano array structure of corresponding size on the half-finished glue-free composite bed 1 of polyethylene film, finally by cooling, sided corona treatment or flame treatment harvest parent roll, obtain the glue-free compound polyethylene film finished product of using of plastic-aluminum.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is colorless and transparent film.
Compoundly carry out compound with polyethylene film and aluminium foil with the plastic-aluminum of the present embodiment is glue-free, the polyethylene film of aluminium foil and the present embodiment is processed by a pair of cylinder of heating up and down (temperature 60 C~100 ℃), can be realized compound under the temperature and pressure effect of cylinder.Test the composite effect of the present embodiment polyethylene film by the peel test of routine, its bonding force can satisfy the bonding strength requirement that packing is used aluminium plastic composite material fully.
Embodiment 3:
The glue-free compound polyethylene film of using of a kind of plastic-aluminum of the present invention as shown in Figure 1 and Figure 2, this polyethylene film includes and the contacted glue-free composite bed 1 of external application aluminium foil, the body layer 2 of centre and the hot sealing layer 3 of nexine from outside to inside, and the outer surface of glue-free composite bed 1 is provided with the nano array structure of similar gecko pin.In the present embodiment, the thickness of glue-free composite bed 1, body layer 2 and hot sealing layer 3 is 10 μ m.Nano array structure includes the nanoscale protrusion 4 that is array distribution.The spacing W of nanoscale protrusion 4 is 10nm.The height H of nanoscale protrusion 4 is 70nm.Nanoscale protrusion 4 arranges and is cylindrical (also can be cuboid), and the bottom surface diameter D of this cylindrical nanoscale protrusion is 18nm.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of glue-free composite bed 1:
95% ethylene-vinyl acetate copolymer,
0.3% antioxidant 1010,
1% silica,
0.3% oleamide,
1.4% calcium carbonate,
1% titanium dioxide and
1% glycerin monostearate.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, and body layer 2 is mainly by the raw material blend moulding of following mass fraction: 90% crystalline polyethylene and 10% ethylene/alpha-olefin random copolymer.
The plastic-aluminum of the present embodiment is glue-free compound with in polyethylene film, the main raw material blend moulding by following mass fraction of hot sealing layer 3:
95% low density polyethylene (LDPE),
0.5% antioxidant 1010,
1.3% silica,
0.7% oleamide,
1% calcium carbonate,
1% titanium dioxide and
0.5% glycerin monostearate.
the plastic-aluminum of the present embodiment is glue-free compoundly specifically to be prepared by following steps with polyethylene film: will be respectively used to prepare above-mentioned glue-free composite bed 1, the various raw materials of body layer 2 and hot sealing layer 3 (comprising the above main material organic polymer of listing and various functional aid) mix and stir by above-mentioned formula, the raw mix of each functional layer after then stirring injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer transmits through pipeline again, filter filters, runner distributes and die head is extruded, form the composite membrane base of coextrusion, the polyethylene film semi-finished product of the stretched formation respective thickness of composite membrane base, then adopt nanometer embossing to process the nano array structure of corresponding size on the half-finished glue-free composite bed 1 of polyethylene film, finally by cooling, sided corona treatment or flame treatment harvest parent roll, obtain the glue-free compound polyethylene film finished product of using of plastic-aluminum.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is colorless and transparent film.
Compoundly carry out compound with polyethylene film and aluminium foil with the plastic-aluminum of the present embodiment is glue-free, the polyethylene film of aluminium foil and the present embodiment is processed by a pair of cylinder of heating up and down (temperature 60 C~100 ℃), can be realized compound under the temperature and pressure effect of cylinder.Test the composite effect of the present embodiment polyethylene film by the peel test of routine, its bonding force can satisfy the bonding strength requirement that packing is used aluminium plastic composite material fully.

Claims (8)

1. glue-free compound polyethylene film of using of plastic-aluminum, it is characterized in that: described polyethylene film includes and the contacted glue-free composite bed of external application aluminium foil, the body layer of centre and the hot sealing layer of nexine from outside to inside, and the outer surface of described glue-free composite bed is provided with the nano array structure of similar gecko pin;
Described glue-free composite bed is mainly by the raw material blend moulding of following mass fraction:
50%~95% ethylene-vinyl acetate copolymer,
0.1%~10% antioxidant 1010,
0.1%~10% silica,
0.1%~20% oleamide,
0.1%~5% calcium carbonate,
0.5%~30% titanium dioxide and
0.2%~20% glycerin monostearate.
2. the glue-free compound polyethylene film of using of plastic-aluminum according to claim 1, is characterized in that, described nano array structure includes the nanoscale protrusion that is array distribution.
3. the glue-free compound polyethylene film of using of plastic-aluminum according to claim 2, is characterized in that, the spacing of described nanoscale protrusion is 1nm~50nm; The height of described nanoscale protrusion is 40nm~100nm.
4. the glue-free compound polyethylene film of using of plastic-aluminum according to claim 3, is characterized in that, described nanoscale protrusion is cylindrical or cuboid; The bottom surface diameter of described cylindrical nanoscale protrusion is 10nm~80nm; The bottom width of described cuboid nanoscale protrusion is 10nm~80nm.
5. the glue-free compound polyethylene film of using of the described plastic-aluminum of any one according to claim 1~4, is characterized in that, described body layer is mainly by the raw material blend moulding of following mass fraction:
30%~90% crystalline polyethylene and
10%~70% ethylene/alpha-olefin random copolymer.
6. the glue-free compound polyethylene film of using of the described plastic-aluminum of any one according to claim 1~4, is characterized in that, described hot sealing layer is mainly by the raw material blend moulding of following mass fraction:
50%~95% low density polyethylene (LDPE),
0.1%~10% antioxidant 1010,
0.1%~10% silica,
0.1%~20% oleamide,
0.1%~5% calcium carbonate,
0.5%~30% titanium dioxide and
0.2%~20% glycerin monostearate.
7. the glue-free compound polyethylene film of using of the described plastic-aluminum of any one according to claim 1~4, is characterized in that, the thickness of described glue-free composite bed, body layer and hot sealing layer is 0.001 μ m~20 μ m.
8. the glue-free compound preparation method with polyethylene film of a plastic-aluminum as described in any one in claim 1~7, comprise the following steps: the various raw materials that will be respectively used to prepare described glue-free composite bed, body layer and hot sealing layer mix and stir by formula, the raw mix of each layer after then stirring injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer more after filtration, runner distributes and die head is extruded, form the composite membrane base of coextrusion, the polyethylene film semi-finished product of the stretched formation respective thickness of composite membrane base; Then adopt nanometer embossing to process described nano array structure on the half-finished glue-free composite bed of described polyethylene film, finally by cooling, sided corona treatment or flame treatment harvest parent roll, obtain the glue-free compound polyethylene film finished product of using of plastic-aluminum.
CN 201110067768 2011-03-21 2011-03-21 Adhesive-free aluminium and plastic compounded polyethylene film and manufacturing method thereof Active CN102198746B (en)

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CN103709479B (en) * 2013-12-18 2016-03-09 江苏标榜装饰新材料股份有限公司 Aluminum-plastic composite board of a kind of high rigidity and high bending strength and preparation method thereof
CN105058919B (en) * 2015-08-13 2018-04-10 东莞市泰和塑胶制品有限公司 Plastic-aluminum is without the compound aluminium foil and preparation method thereof of glue
CN105623549A (en) * 2015-12-31 2016-06-01 安徽省元琛环保科技有限公司 Novel filter bag needle hole coating method
CN107089043A (en) * 2017-04-10 2017-08-25 滁州卷烟材料厂 A kind of aluminium-foil paper being combined without glue
CN111993744A (en) * 2020-09-15 2020-11-27 温州市金田塑业有限公司 BOPP (biaxially-oriented Polypropylene) glue-free hot-pressing film processing method
CN114132041A (en) * 2021-12-14 2022-03-04 江西明冠锂膜技术有限公司 Aluminum plastic film with low surface friction coefficient and preparation method thereof

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