CN102198746A - 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 PDFInfo
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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
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), for the various performances of packaging material strict requirement is arranged, 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 or the like.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 excellent comprehensive performances, to reach the requirement of commodity packaging.Compound package material commonly used mainly is various laminated films, be basic material promptly, through compound, the resulting flexibility compound package materials of various combined machining methods such as lamination is compound, coextru-lamination of coating with combination property with flexible packages such as paper, glassine paper, plastic sheeting, metal formings.Wherein, aluminum-plastic composite membrane has been subjected to packaging industry and user's favor owing to having very excellent barrier, waterproof and dampproof property, printability and heat sealability etc., proportion reaches more than 50% in flexible package composite material, nearly 5,000,000 tons of the annual production of aluminium plastic composite packaging material at present.
Yet traditional aluminum-plastic composite membrane needs intermediate layer-adhesive layer, forms aluminum-plastic composite membrane thereby just need to use intermediate layer with bonding force that aluminium foil and plastic sheeting are bonded together.At present industrially be used for plastic-aluminum combined method and mainly contain following several:
1) glue method: it is compound and wet method is compound to be divided into dry method again according to the difference of combination process, so-called wet method is compound to be that adhesive is uniformly coated in aluminium foil or the plastic sheeting substrate, then that aluminium foil and plastic sheeting is compound under certain pressure, by baking oven the solvent evaporates in the adhesive is fallen then; And compound being meant of dry method evenly coated adhesive in aluminium foil or the plastic sheeting substrate, and be compound under certain pressure again after with solvent evaporates in the adhesive by baking oven; Yet, being that the compound or wet method of dry method is compound all needs to use a large amount of organic solvents, according to statistics, China is used for nearly 40,000 tons of the compound solvent type adhesive of packaging material every year, rough estimation, and annual organic solvent total amount consumed is no less than 60,000 tons, and the sizing material that really plays adhesive effect has only more than 25,000 ton, will consume so a large amount of organic solvent every year, this has at first 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 to improve greatly, by the about 8,000 yuan calculation of price 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 expenditure of one in adhesive will so improve (than the method without organic solvent) more than 40%; In addition, the organic solvent emission that has penetrating odor in a large number, not only can cause abominable production environment, but also the respiratory apparatus that may stimulate shop personnel, influence production safety, promptly 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, a large amount of negative effects that organic solvent brought more and more has been subjected to people's attention to consuming so;
2) solvent-free composite algorithm: promptly do not have solvent in the adhesive, use this method environmentally safe, yet the initial bonding strength of this method gained joint product is extremely low, can not satisfy actual instructions for use;
3) precoating method: be about to PUR and be coated in advance on the film, as long as with film and aluminium foil hot pressing, this method also can be without solvent during use, 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 improvement and the innovation 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 big, plastic-aluminum with low cost, resource-effective does not have the compound polyethylene film of using of glue, also correspondingly provide that a kind of preparation technology is simple, preparation cost is little, process safety is good and plastic-aluminum environmental protection does not have the compound preparation method with polyethylene film of glue.
For solving the problems of the technologies described above, the technical scheme that the present invention proposes is that a kind of plastic-aluminum does not have the compound polyethylene film of using of glue, described polyethylene film includes and the contacted no glue 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 no glue composite bed is provided with the nano array structure of similar gecko pin.Described hot sealing layer generally is used for the heat sealing of bag when packing endosexine, and 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 the packing and directly directly contacts with aluminium foil of packing external application, has effects such as anticorrosive, waterproof, protection against the tide; Not have glue compound for the aluminium foil of external application when described no glue composite bed then was mainly used in and packs.
It is compound with in the polyethylene film that above-mentioned plastic-aluminum does not have glue, 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 is provided with and is the cylinder bodily form or cuboid.When being set to the cylinder bodily form, the bottom surface diameter of described cylinder bodily form nanoscale protrusion is preferably 10nm～80nm; When being set to cuboid, the bottom width of described cuboid nanoscale protrusion is preferably 10nm～80nm.
It is compound with in the polyethylene film that above-mentioned plastic-aluminum does not have glue, and the thickness of described no glue composite bed, body layer and hot sealing layer all is preferably 0.001 μ m～20 μ m.
It is compound with in the polyethylene film that above-mentioned plastic-aluminum does not have glue, the preferred main raw material blend moulding by following mass fraction of described no glue 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.
It is compound with in the polyethylene film that above-mentioned plastic-aluminum does not have glue, 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.
It is compound with in the polyethylene film that above-mentioned plastic-aluminum does not have glue, 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 not have the compound preparation method with polyethylene film of glue, specifically may further comprise the steps: will be respectively applied for the described no glue composite bed of preparation, the various raw materials of body layer and hot sealing layer (comprising main material and various functional aid) mix by prescription and stir, the raw mix of each layer after will stirring then 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; Adopt nanometer embossing to process described nano array structure then on the half-finished no glue composite bed of described polyethylene film, after cooling, sided corona treatment or flame treatment harvest parent roll, obtaining plastic-aluminum does not have the compound polyethylene film finished product of using of glue.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:
1. plastic-aluminum of the present invention do not have the compound no glue composite bed with polyethylene film of glue can be directly and the no glue of aluminium foil realization compound: in concrete application, no glue composite bed in the polyethylene film of the present invention can produce bond properties when being heated to 60 ℃～100 ℃, be not provided with on the surface under the situation of nano array structure, its bonding force is difficult to satisfy compound needed bonding strength; In order to improve bonding force, the present invention creatively no glue composite bed Surface Machining go out similar gecko pin nano array structure (the gecko pin be exactly rely on its pin countless nanometer bristle configurations realize its with the superpower bonding of body surface and adsorb), through our experiment and observation repeatedly, this nano array structure just can be realized firm combining with any smooth solid under without any the prerequisite of glue, the thin film composition of adding no glue 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 improve its bonding force greatly undoubtedly, to satisfy the needs of the compound production of aluminium plastic membrane; In concrete combination process operating process, only need aluminium foil and polyethylene film of the present invention are handled by a pair of cylinder (temperature is 60 ℃～100 ℃) of heating up and down, under the temperature and pressure effect of cylinder, just can realize the recombination process of polyethylene film of the present invention and aluminium foil, whole application operating process is simple relatively, can significantly reduce organic solvent and binding agent are used, the consumption of the resource and the energy all significantly reduces, production cost also further reduces, and economic benefit obviously improves;
2. it is strong that plastic-aluminum of the present invention does not have the compound initial bonding strength with polyethylene film of glue, and peel strength is big, can satisfy the requirement of packaging material on mechanical property better;
3. coextrusion preparation technology of the present invention is simple, owing to avoided a large amount of uses of chemical reagent such as organic solvent, not only more helps ensureing producers' health and safety, and the pollution of environment is reduced greatly that environmental protection is easy to promotion and application.
Description of drawings
Fig. 1 does not have the compound vertical view (partial view) with polyethylene film of glue for plastic-aluminum of the present invention.
Fig. 2 is the cutaway view at A-A place among Fig. 1.
Marginal data:
1, no glue composite bed;
2, body layer;
3, hot sealing layer;
4, nanoscale protrusion.
The specific embodiment
Embodiment 1:
A kind of plastic-aluminum of the present invention does not as shown in Figure 1 and Figure 2 have the compound polyethylene film of using of glue, this polyethylene film includes and the contacted no glue 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 no glue composite bed 1 is provided with the nano array structure of similar gecko pin.The thickness of no glue composite bed 1, body layer 2 and hot sealing layer 3 is 5 μ m in the present embodiment.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 is provided with and is the cylinder bodily form (also can be cuboid), and the bottom surface diameter D of this cylinder bodily form nanoscale protrusion is 10nm.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, no glue composite bed 1 main raw material blend moulding by following mass fraction:
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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, 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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, hot sealing layer 3 main raw material blend moulding by following mass fraction:
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.
It specifically is to be prepared by following steps with polyethylene film that the plastic-aluminum of present embodiment does not have glue compound: will be respectively applied for the above-mentioned no glue composite bed 1 of preparation, the various raw materials of body layer 2 and hot sealing layer 3 (comprising above main material organic polymer of listing and various functional aid) mix by above-mentioned prescription and stir, the raw mix of each functional layer after will stirring then injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer is again through pipeline transmission, 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; Adopt nanometer embossing to process the nano array structure of corresponding size then on the half-finished no glue composite bed 1 of polyethylene film, after cooling, sided corona treatment or flame treatment harvest parent roll, obtaining plastic-aluminum does not have the compound polyethylene film finished product of using of glue.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is a colorless and transparent film.
The plastic-aluminum of present embodiment do not had glue is compound to carry out compound with polyethylene film and aluminium foil, the polyethylene film of aluminium foil and present embodiment is handled by a pair of cylinder (60 ℃～100 ℃ of temperature) of heating up and down, under the temperature and pressure effect of cylinder, can be realized compound.By the composite effect of peeling off experiment test present embodiment polyethylene film of routine, its bonding force can satisfy the bonding strength requirement of packing with aluminium plastic composite material fully.
Embodiment 2:
A kind of plastic-aluminum of the present invention does not as shown in Figure 1 and Figure 2 have the compound polyethylene film of using of glue, this polyethylene film includes and the contacted no glue 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 no glue composite bed 1 is provided with the nano array structure of similar gecko pin.The thickness of no glue composite bed 1, body layer 2 and hot sealing layer 3 is 5 μ m in the present embodiment.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 is provided with and is the cylinder bodily form (also can be cuboid), and the bottom surface diameter D of this cylinder bodily form nanoscale protrusion is 15nm.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, no glue composite bed 1 main raw material blend moulding by following mass fraction:
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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, 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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, hot sealing layer 3 main raw material blend moulding by following mass fraction:
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.
It specifically is to be prepared by following steps with polyethylene film that the plastic-aluminum of present embodiment does not have glue compound: will be respectively applied for the above-mentioned no glue composite bed 1 of preparation, the various raw materials of body layer 2 and hot sealing layer 3 (comprising above main material organic polymer of listing and various functional aid) mix by above-mentioned prescription and stir, the raw mix of each functional layer after will stirring then injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer is again through pipeline transmission, 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; Adopt nanometer embossing to process the nano array structure of corresponding size then on the half-finished no glue composite bed 1 of polyethylene film, after cooling, sided corona treatment or flame treatment harvest parent roll, obtaining plastic-aluminum does not have the compound polyethylene film finished product of using of glue.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is a colorless and transparent film.
The plastic-aluminum of present embodiment do not had glue is compound to carry out compound with polyethylene film and aluminium foil, the polyethylene film of aluminium foil and present embodiment is handled by a pair of cylinder (60 ℃～100 ℃ of temperature) of heating up and down, under the temperature and pressure effect of cylinder, can be realized compound.By the composite effect of peeling off experiment test present embodiment polyethylene film of routine, its bonding force can satisfy the bonding strength requirement of packing with aluminium plastic composite material fully.
Embodiment 3:
A kind of plastic-aluminum of the present invention does not as shown in Figure 1 and Figure 2 have the compound polyethylene film of using of glue, this polyethylene film includes and the contacted no glue 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 no glue composite bed 1 is provided with the nano array structure of similar gecko pin.The thickness of no glue composite bed 1, body layer 2 and hot sealing layer 3 is 10 μ m in the present embodiment.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 is provided with and is the cylinder bodily form (also can be cuboid), and the bottom surface diameter D of this cylinder bodily form nanoscale protrusion is 18nm.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, no glue composite bed 1 main raw material blend moulding by following mass fraction:
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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, 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.
It is compound with in the polyethylene film that the plastic-aluminum of present embodiment does not have glue, hot sealing layer 3 main raw material blend moulding by following mass fraction:
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.
It specifically is to be prepared by following steps with polyethylene film that the plastic-aluminum of present embodiment does not have glue compound: will be respectively applied for the above-mentioned no glue composite bed 1 of preparation, the various raw materials of body layer 2 and hot sealing layer 3 (comprising above main material organic polymer of listing and various functional aid) mix by above-mentioned prescription and stir, the raw mix of each functional layer after will stirring then injects extruder and is processed into plasticizing, uniform raw material melt, the raw material melt of each layer is again through pipeline transmission, 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; Adopt nanometer embossing to process the nano array structure of corresponding size then on the half-finished no glue composite bed 1 of polyethylene film, after cooling, sided corona treatment or flame treatment harvest parent roll, obtaining plastic-aluminum does not have the compound polyethylene film finished product of using of glue.Parent roll is cut at last and is obtained various film articles through Ageing Treatment.The polyethylene film that the present invention makes is a colorless and transparent film.
The plastic-aluminum of present embodiment do not had glue is compound to carry out compound with polyethylene film and aluminium foil, the polyethylene film of aluminium foil and present embodiment is handled by a pair of cylinder (60 ℃～100 ℃ of temperature) of heating up and down, under the temperature and pressure effect of cylinder, can be realized compound.By the composite effect of peeling off experiment test present embodiment polyethylene film of routine, its bonding force can satisfy the bonding strength requirement of packing with aluminium plastic composite material fully.
Claims (9)
1. a plastic-aluminum does not have the compound polyethylene film of using of glue, it is characterized in that: described polyethylene film includes and the contacted no glue 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 no glue composite bed is provided with the nano array structure of similar gecko pin.
2. plastic-aluminum according to claim 1 does not have the compound polyethylene film of using of glue, it is characterized in that, described nano array structure includes the nanoscale protrusion that is array distribution.
3. plastic-aluminum according to claim 2 does not have the compound polyethylene film of using of glue, it is characterized in that, the spacing of described nanoscale protrusion is 1nm～50nm; The height of described nanoscale protrusion is 40nm～100nm.
4. plastic-aluminum according to claim 3 does not have the compound polyethylene film of using of glue, it is characterized in that, described nanoscale protrusion is the cylinder bodily form or cuboid; The bottom surface diameter of described cylinder bodily form nanoscale protrusion is 10nm～80nm; The bottom width of described cuboid nanoscale protrusion is 10nm～80nm.
5. do not have the compound polyethylene film of using of glue according to each described plastic-aluminum in the claim 1～4, it is characterized in that, described no glue 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.
6. do not have the compound polyethylene film of using of glue according to each described plastic-aluminum in the claim 1～4, it 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.
7. do not have the compound polyethylene film of using of glue according to each described plastic-aluminum in the claim 1～4, it 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.
8. do not have the compound polyethylene film of using of glue according to each described plastic-aluminum in the claim 1～4, it is characterized in that, the thickness of described no glue composite bed, body layer and hot sealing layer is 0.001 μ m～20 μ m.
9. one kind is not had the compound preparation method with polyethylene film of glue as each described plastic-aluminum in the claim 1～8, may further comprise the steps: the various raw materials that will be respectively applied for preparation described no glue composite bed, body layer and hot sealing layer mix by prescription and stir, the raw mix of each layer after will stirring then 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; Adopt nanometer embossing to process described nano array structure then on the half-finished no glue composite bed of described polyethylene film, after cooling, sided corona treatment or flame treatment harvest parent roll, obtaining plastic-aluminum does not have the compound polyethylene film finished product of using of glue.
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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 |
| CN105058919A (en) * | 2015-08-13 | 2015-11-18 | 东莞市泰和塑胶制品有限公司 | Aluminum foil for adhesive-free aluminum-plastic compositing and preparation method of aluminum foil |
| 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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