CN103192570A - High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof - Google Patents
High-resistance steam resistant packaging film convenient for direct microwave heating and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of packaging materials, and in particular relates to a high-resistance steam resistant packaging film convenient for direct microwave heating and a preparation method thereof. The packaging film comprises an aluminum oxide plated PET (polyethylene terephthalate) film layer, a first steam resistant adhesive layer, a polyamide film layer, a second steam resistant adhesive layer and a steam resistant curtain coating polypropylene film layer which are adhered together in sequence. The preparation method of the packaging film comprises the following steps of: preparing an aluminum oxide plated PET film by steam-plating aluminum oxide on a PET film; then compounding the aluminum oxide plated PET film and the polyamide film layer together to obtain an outer layer film; and compounding the steam resistant curtain coating polypropylene film layer and the outer film layer together through a solvent-less compounding technology, thus obtaining the packaging film. The packaging film can heated with microwave directly, can resist 135DEG C high-temperature digestion to ensure that sterilization is carried out more comprehensive and thorough, and is high in resistance, good in heat sealability and air tightness, good in impact resistance, and excellent in physical mechanical property.
Description
Technical field
The invention belongs to field of packaging material, be specifically related to a kind of high-barrier retort packaging film of being convenient to direct heating using microwave and preparation method thereof.
Background technology
Plastic package material as " rising sun-industry " is an indispensable part in the national economic development, along with expanding economy, and the growth of social demand amount and the expansion of exporting, more and more higher to the requirement of plastic package material.Plastic package material will to be conducive to save energy and reduce the cost, direction anti-pollution, multi-functional and hommization develops.
Retort packaging is to develop over the past two years to pack one of classification faster.Digestion resistant food pack (hereinafter to be referred as anti-retort pouch) is commonly called as foods packed in carton containers, its most outstanding feature be long-term placement the and do not take place putrid and deteriorated at normal temperatures; Use also easily, can heat boil again by cold food.Present anti-retort pouch is mainly used in packing tinned food, prepared food etc., also is used for packaged beverage, fruit juice, mashed potatoes, cereal foods etc. in Japan, West Europe.
Usually common anti-retort pouch all is to adopt 121 ℃ of high-temperature sterilizations to handle on the market, can well preserve and protect content, and the general shelf-life is all in 6 months.China is along with the raising of people's living standard, and is more and more higher to the security requirement of packaging for foodstuff.How effectively to prolong the shelf-life of packing content thing, keep the local flavor of content and mouthfeel to become a needs problem demanding prompt solution to greatest extent.And at present external flexible package manufacturer mainly realizes by the combination of two aspects in order to prolong the shelf-life of packing content thing: 1, by improving boiling temperature, carry out content is carried out more comprehensively sterilization treatment completely in 135 ℃ steam.2, improve the barrier property of packaging film.Improve barrier and not only can prevent the content loss of aroma, guarantee the integrality of product fragrance and delicate flavour, simultaneously, excellent oxygen and steam barrier property can effectively be avoided quality problems such as product generation oxidation deterioration.
And with the quickening pace of modern life, the micro-wave oven of energy Fast Heating has also entered huge numbers of families, and directly the high-barrier thermophilic digestion packaging market of heating using microwave has obtained development fast.The more convenient inevitable requirement of manner of packing more efficiently packaging material possess more function.Can enter micro-wave oven and directly heat, be the function that this type of high-barrier thermophilic digestion material should possess, and also is an inevitable development trend.Tradition is used for packing the material that takes blocking effect and mostly is PVDC, EVOH, aluminium foil, aluminizer four big classes.As the PVDC that the high obstructing performance packaging material are widely used, its discarded object will produce Cl when burning is handled
2And can cause environmental pollution; The EVOH barrier property is affected by environment big, and when humidity＞60%, barrier property obviously descends; Aluminium foil is opaque, big, the easy wrinkle of resource consumption, obstruct microwave penetrating; Aluminizer be difficult for to reclaim, opaque, microwave penetrating is poor, and when thermophilic digestion the aluminium lamination obscission takes place easily.
Therefore the conventional obstructive material is difficult to adapt to the consumption occupation mode of direct heating using microwave, food processing industry be badly in need of a kind of not only have excellent barrier property, can anti-135 ℃ of boilings, and can be directly into the packaging material of micro-wave oven heating.
Summary of the invention
One of purpose of the present invention provides a kind of high-barrier retort packaging film of being convenient to direct heating using microwave, this packaging film not only have excellent barrier property, can anti-135 ℃ of boilings, and can directly enter the micro-wave oven heating.
For achieving the above object, the present invention has adopted following technical scheme: a kind of high-barrier retort packaging film of being convenient to direct heating using microwave, this packaging film comprise plating aluminium oxide PET thin layer, first adhesive layer of anti-boiling the, polyamide film layer, second adhesive layer of anti-boiling the and the cast polypropylene film of anti-boiling layer that fits successively; The described cast polypropylene film of anti-boiling layer is made of the corona layer, intermediate layer and the hot sealing layer that link to each other successively, and described corona layer is adjacent with described second adhesive layer of anti-the boiling.
The present invention can also be able to further realization by following technical measures:
Preferably, described first adhesive layer of anti-boiling the and second adhesive layer of anti-the boiling all adopt the double component solvent-free adhesive of anti-the boiling to make.
Preferably, the thickness of described plating aluminium oxide PET thin layer is 12 μ m, and the thickness of first adhesive layer of anti-the boiling is 1～3 μ m, and the thickness of polyamide film layer is 15 μ m, and the thickness of second adhesive layer of anti-the boiling is 1～3 μ m.
Preferably, described corona layer is the block copolymerization polypropylene layer, and the intermediate layer is block copolymerization polypropylene and SEBS elastomer composite layer, and hot sealing layer is the block copolymerization polypropylene layer.
Further, described SEBS elastomer is polystyrene-poly ethene/polybutene-polystyrene.
As the further preferred version of another kind of the present invention, the part by weight between described corona layer, intermediate layer and the hot sealing layer three is 1:3:1; The percentage by weight of the block copolymerization polypropylene in the described intermediate layer is 80～85%, and the percentage by weight of polystyrene-poly ethene/polybutene-polystyrene is 15～20%.
Preferably, the thickness of described corona layer is 15～20 μ m, and the thickness in intermediate layer is 60～70 μ m, and the thickness of hot sealing layer is 15～20 μ m.
Two of purpose of the present invention provides a kind of above-mentioned preparation method of being convenient to the high-barrier retort packaging film of direct heating using microwave, and it comprises the steps:
1), the PET film is made plating aluminium oxide PET film through the plating alumina technology;
And the batching of the cast polypropylene film of anti-the boiling prepared the cast polypropylene film of anti-the boiling through extruding operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut operation successively, the described cast polypropylene film of anti-the boiling is made of the corona layer, intermediate layer and the hot sealing layer that link to each other successively;
2), then by plating aluminium oxide PET film and polyamide film layer earlier by the compound outer membrane that makes of first adhesive layer of anti-the boiling;
3), the corona layer of the polyamide film layer of described outer membrane and the cast polypropylene film of anti-the boiling is combined with each other by first adhesive layer of anti-the boiling by solvent-free compound working procedure, finally obtain this packaging film.
Preferably, in the described cooling and shaping operation, casting roller carries out quick cooling and shaping to hot melt film under air knife, the effect of vacuum tank servicing unit, and the casting roller roll surface temperature is 20～30 ℃; The gap of described air knife is 1～2mm, and the angle of air knife is 16%.
Beneficial effect of the present invention is as follows:
1), to have adopted plating aluminium oxide PET film be the ALOx-PET film to the skin of this packaging film.Plating aluminium oxide PET film has good transparent obstructive, microwave penetrating and boiling resistance energy, and has the fragrant effect of fresh-keeping guarantor, can be compound with multiple flexible packages, and the suitable property of processing is good, can not pollute environment.
Plating aluminium oxide PET film can substitute barrier materials such as existing P VDC, EVOH, aluminium foil, aluminizer, plating silicon oxide film on function, and has successfully avoided the weak point of above various types of materials, is a kind of new packaging material with multinomial premium properties.
The intermediate layer of this packaging film is the BOPA film for the polyamide film layer, and the BOPA film has good obdurability, tensile strength, percentage elongation and wearability.Select for use nylon film to be because it has the better physical mechanical performance, withstand voltage, the shock-resistant and anti-performance such as fall that can strengthen product after compound can well be protected content, ensures the environmental suitability of product.BOPA nylon cost is moderate, and the polyamide film layer is combined with outer ALOx-PET film, can further improve barrier property and the environmental adaptability of composite membrane.
The internal layer of this packaging film is the RCPP film for the cast polypropylene film of anti-boiling layer that can anti-135 ℃ of thermophilic digestions.The described cast polypropylene film of anti-boiling layer has good hot sticky performance, boiling resistance energy, has good foreign matter to be mingled with heat sealability.Behind thermophilic digestion, packaging bag can guarantee not reveal, indeformable, do not curl, not stratified.Good physical and mechanical properties is arranged, can promote the deflection of packing; Adapt to the normal operation of high-speed packaging device.
2), common adhesive after boiling, be easy to take place lamination, will cause packing to lose efficacy quality problems such as outward appearance distortion.First adhesive layer of anti-boiling the and second adhesive layer of anti-boiling the among the present invention have all adopted the type of anti-boiling adhesive.The described type of anti-boiling adhesive has high solids content, low-viscosity, first viscous force height, boiling front and back peel strength advantages of higher, and has characteristics such as higher food sanitation safe and quality stability.Adhesive for polyurethane is the same with other polymer, and oxidation reaction takes place easily during high temperature, oxidized complexity in the time of can estimating its high temperature according to oxygen absorption rate.Therefore, when design digestion resistant adhesive for polyurethane, should select material and the slow material of oxygen absorption rate that can shield the carbon-oxygen bond hydrolysis.The present invention has namely selected the Henkel double component solvent-free adhesive of anti-boiling the 7735/6088 for use.
3), the RCPP film among the present invention is to use the cast polypropylene film of anti-boiling of three-layer co-extruded explained hereafter, advantage is as follows:
A) the RCPP film needs high cooking at high temperature, therefore need to use the PP(polypropylene of good heat resistance) resin, though homopolymerization PP resin temperature tolerance is good, but easy embrittlement in digestion process, cause the shock resistance of film to descend, so all used the block copolymerization PP resin that has good heat resistance and shock resistance simultaneously in the three-decker of RCPP film;
B) it is further impact-resistant modified so that block copolymerization PP is carried out that the SEBS elastomer has been sneaked in the intermediate layer of RCPP film, improved pliability and the impact resilience of RCPP film.SEBS is to be end segment with the polystyrene, and the ethylene-butene copolymer that obtains with the polybutadiene hydrogenation is the linearity three embedding copolymers of middle elastomeric block, has the mechanical property of good weatherability, hear resistance, excellence;
The performance of SEBS resin G2806GO is as follows: density 0.91g/cm
3, melt finger 5g/10min, styrene-content 30%.
C) distinctive soft or hard segment structure also offers the good heat sealability of RCPP thin layer in the block copolymerization PP strand outside the erosion-resisting characteristics of giving RCPP thin layer excellence, thereby has guaranteed that the packaging film among the present invention has higher sealing-strength;
D) block copolymerization PP resin F354NV distinctive surface coarsening effect in curtain coating machine-shaping process can guarantee that the RCPP thin layer under the situation of not adding any slipping agent, opening agent, has suitable opening performance.
The performance of block copolymerization PP resin F354NV is as follows: density 0.91g/cm
3, melt finger 3.5g/10min, 155 ℃ of Vicat softening points.
3), this packaging film barrier property height, can well guarantee the quality of content, prolong the shelf cycle.
4), this packaging film can anti-135 ℃ thermophilic digestion, sterilization is more comprehensively thoroughly.
5), this packaging film can directly carry out heating using microwave, it is edible to break a seal simply again, uses safe ready more.
6), this packaging film transparent wrapper, be beneficial to the observed content thing.
7), this packaging film heat sealability and sealing be good, impact resistance is good, the physical and mechanical properties excellence.
Description of drawings
Fig. 1 is the structural representation of the high-barrier retort packaging film among the present invention.
Fig. 2 is the preparation flow figure of the high-barrier retort packaging film among the present invention.
The implication of mark is as follows among the figure:
10-plating aluminium oxide PET thin layer, 20-the first adhesive layer of anti-the boiling
30-polyamide film BOPA layer, 40-the second adhesive layer of anti-the boiling
50-the cast polypropylene film of anti-boiling RCPP layer
51-corona layer, 52-intermediate layer, 53-hot sealing layer
The specific embodiment
As shown in Figure 1, a kind of high-barrier retort packaging film of being convenient to direct heating using microwave, this packaging film comprise plating aluminium oxide PET thin layer 10, first adhesive layer of anti-boiling the 20, polyamide film BOPA layer 30, second adhesive layer of anti-boiling the 40 and the cast polypropylene film of anti-boiling RCPP layer 50 that fits successively; The described cast polypropylene film of anti-boiling RCPP layer 50 is made of the corona layer 51, intermediate layer 52 and the hot sealing layer 53 that link to each other successively, and described corona layer 51 is adjacent with described second adhesive layer of anti-boiling the 40.
Described first adhesive layer of anti-boiling the 20 and second adhesive layer of anti-boiling the 40 all adopt the double component solvent-free adhesive of anti-the boiling to make.
Among Fig. 1, the thickness of described plating aluminium oxide PET thin layer 10 is that the thickness of 12 μ m, first adhesive layer of anti-boiling the 20 is that the thickness of 1～3 μ m, polyamide film BOPA layer 30 is that the thickness of 15 μ m, second adhesive layer of anti-boiling the 40 is 1～3 μ m.
Described corona layer 51 among Fig. 1 is the block copolymerization polypropylene layer, and intermediate layer 52 is block copolymerization polypropylene and SEBS elastomer composite layer, and hot sealing layer 53 is the block copolymerization polypropylene layer.
Further, described SEBS elastomer is polystyrene-poly ethene/polybutene-polystyrene.
Part by weight between described corona layer 51, intermediate layer 52 and hot sealing layer 53 threes is 1:3:1; The percentage by weight of the block copolymerization polypropylene in the described intermediate layer 52 is 80～85%, and the percentage by weight of polystyrene-poly ethene/polybutene-polystyrene is 15～20%.
Preferably, as shown in Figure 1, the thickness of described corona layer 51 is 15～20 μ m, and the thickness in intermediate layer 52 is 60～70 μ m, and the thickness of hot sealing layer 53 is 15～20 μ m.
As shown in Figure 2, a kind of preparation method of being convenient to the high-barrier retort packaging film of direct heating using microwave, it comprises the steps:
1), the PET film is made plating aluminium oxide PET film through the plating alumina technology;
And the batching of the cast polypropylene film of anti-boiling RCPP prepared the cast polypropylene film of anti-boiling RCPP through extruding operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut operation successively, the described cast polypropylene film of anti-boiling RCPP is made of the corona layer 51, intermediate layer 52 and the hot sealing layer 53 that link to each other successively;
2), then by plating aluminium oxide PET film and polyamide film BOPA layer earlier by the compound outer membrane that makes of first adhesive layer of anti-the boiling;
3), the corona layer 51 of the polyamide film BOPA layer of described outer membrane and the cast polypropylene film of anti-boiling RCPP is combined with each other by first adhesive layer of anti-the boiling by solvent-free compound working procedure, finally obtain this packaging film.
In the described cooling and shaping operation, casting roller carries out quick cooling and shaping to hot melt film under air knife, the effect of vacuum tank servicing unit, and the casting roller roll surface temperature is 20～30 ℃; The gap of described air knife is 1～2mm, and the angle of air knife is 16%.
Below in conjunction with specific embodiment preparation process of the present invention is elaborated.
Embodiment 1
1), the preparation of plating aluminium oxide PET film
The PET film is made plating aluminium oxide PET film through the aluminium oxide evaporation process
The aluminium oxide evaporation coating technique is on the basis of traditional aluminum plating process, using the radio frequency plasma treatment system is that the PET film carries out cleaning surfaces and functionalization to the evaporation base material, and recycling microwave plasma treatment system forms oxonium ion and aluminium ion with oxygen and aluminum vapor ionization; Oxonium ion and aluminium ion through ionization fully react formation aluminium oxide uniform deposition at the PET film surface on evaporating area top, thereby form the transparent ALOx evaporation layer of one deck densification.
The preparation of RCPP film
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut winding process.
A, extrude in the operation: in three extruder hoppers of coextrusion casting machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, the one-level extruder temperature is: 210 ℃, secondary extruder temperature: 225 ℃, three grades extruder temperatures: 230 ℃; Die head temperature: 225 ℃.
Weight ratio between corona layer 51, intermediate layer 52 and hot sealing layer 53 threes is 1:3:1.
In b, the cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under servicing unit effects such as air knife, vacuum tank, and the casting roller roll surface temperature is 30 ℃, and roll surface temperature is even; The gap of described air knife is 2mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air knife pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in the high-speed and continuous production process, the thickness measuring of film must use contactless tracking to detect automatically.In order to guarantee the thickness uniformity of film, the present invention has adopted beta thickness gauge.By the β ray of radioactive source Kr85 emission, be received by the receiver through the film that needs to measure thickness.The data of measuring gained can feed back to computer automatically and handle, and adjust die gap automatically by the die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, and effect is to eliminate the thickness deviation accumulation, makes the volume film flat appearance after the rolling.The beat frame is done the closed loop moving that track is parallelogram under the driving of motor, its result makes the film move left and right, eliminates film thickness deviation accumulation transversely with this.
In e, the corona operation: sided corona treatment power is that 6.2KW, corona roller pressure are 2.8bar, and the wetting tension of corona surface reaches 42 dynes per centimeter; Obtain the RCPP film after the sided corona treatment.
F, side cut winding process: wrap-up order takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Back cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Touch roll tension force: 100N; Touch roll pressure: 100N; The touch roll back pressure; 2.0bar; Rolling density: 90%.
3), selecting plating aluminium oxide PET film (being the ALOx-PET film) is first to unreel base material, make first to unreel base material under the tension force condition of 140N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 90mm in the coating system, the speed ratio of metering roll is 50%, and applicator roll is by pressure roller 0.3Mpa/cm in addition
2Pressure, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the substrate surface, drying tunnel tension force is 102N; Second unreels base material parallel flattening under the tension force condition of 120N, and process doubling roller and heat bonding roller are with 0.3Mpa/cm
2Pressure and first unreel the base material pressing.Bonding film is through the chill roll rolling after cooling, obtains the outer membrane after certain coil diameter.In this process, the metering roll temperature is 45 ℃, and the doubling roller temperature is controlled to be 50 ℃.
4), the outer membrane of selecting to obtain in the step 3) is first to unreel base material, make first to unreel base material under the tension force condition of 200N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 80mm in the coating system, the speed ratio of metering roll is 45%, and applicator roll is by pressure roller 0.25Mpa/cm in addition
2Pressure, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the surface of polyamide BOPA layer of base material, drying tunnel tension force is 100N; Second unreels base material parallel flattening under the tension force condition of 70N, and process doubling roller and heat bonding roller are with 0.25Mpa/cm
2Pressure and the first polyamide BOPA lamination that unreels base material close.Bonding film is through the chill roll rolling after cooling, finally obtains this packaging film after certain coil diameter.In this process, the metering roll temperature is 55 ℃, and the doubling roller temperature is controlled to be 65 ℃.
After the packaging film preparation finishes, according to the required different in width of consumer packaging, length, specification, compound good packaging film is cut the rolling film, to adapt to the requirement of user's automatic packaging machinery.The length and width specification of cutting the volume film should be in strict conformity with customer requirement, end face flatness≤2mm, and layout position does not have skew, and the calm space of a whole page of joint coincide.
In the packaging film in the present embodiment, the thickness of described plating aluminium oxide PET thin layer 10 is 12 μ m, the thickness of first adhesive layer of anti-boiling the 20 is 1 μ m, the thickness of polyamide BOPA layer 30 is 15 μ m, the thickness of second adhesive layer of anti-boiling the 40 is 1 μ m, the thickness of corona layer is 20 μ m, and the thickness in intermediate layer is 60 μ m, and the thickness of hot sealing layer is 20 μ m.
Embodiment 2
1), the preparation of plating aluminium oxide PET film
The PET film is made plating aluminium oxide PET film through the aluminium oxide evaporation process
The aluminium oxide evaporation coating technique is on the basis of traditional aluminum plating process, using the radio frequency plasma treatment system is that the PET film carries out cleaning surfaces and functionalization to the evaporation base material, and recycling microwave plasma treatment system forms oxonium ion and aluminium ion with oxygen and aluminum vapor ionization; Oxonium ion and aluminium ion through ionization fully react formation aluminium oxide uniform deposition at the PET film surface on evaporating area top, thereby form the transparent ALOx evaporation layer of one deck densification.
The preparation of RCPP film
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut winding process.
A, extrude in the operation: in three extruder hoppers of coextrusion casting machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, the one-level extruder temperature is: 210 ℃, secondary extruder temperature: 225 ℃, three grades extruder temperatures: 230 ℃; Die head temperature: 225 ℃.
Weight ratio between corona layer 51, intermediate layer 52 and hot sealing layer 53 threes is 1:3:1.
In b, the cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under servicing unit effects such as air knife, vacuum tank, and the casting roller roll surface temperature is 30 ℃, and roll surface temperature is even; The gap of described air knife is 3mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air knife pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in the high-speed and continuous production process, the thickness measuring of film must use contactless tracking to detect automatically.In order to guarantee the thickness uniformity of film, the present invention has adopted beta thickness gauge.By the β ray of radioactive source Kr85 emission, be received by the receiver through the film that needs to measure thickness.The data of measuring gained can feed back to computer automatically and handle, and adjust die gap automatically by the die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, and effect is to eliminate the thickness deviation accumulation, makes the volume film flat appearance after the rolling.The beat frame is done the closed loop moving that track is parallelogram under the driving of motor, its result makes the film move left and right, eliminates film thickness deviation accumulation transversely with this.
In e, the corona operation: sided corona treatment power is that 6.2KW, corona roller pressure are 2.8bar, and the wetting tension of corona surface reaches 42 dynes per centimeter; Obtain the RCPP film after the sided corona treatment.
F, side cut winding process: winding process takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Back cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Touch roll tension force: 100N; Touch roll pressure: 100N; The touch roll back pressure; 2.0bar; Rolling density: 90%.
3), selecting plating aluminium oxide PET film (being the ALOx-PET film) is first to unreel base material, make first to unreel base material under the tension force condition of 120N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 80mm in the coating system, the speed ratio of metering roll is 45%, and applicator roll is by pressure roller 0.25Mpa/cm in addition
2Pressure, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the substrate surface, drying tunnel tension force is 100N; Second unreels base material parallel flattening under 100N tension force condition, and process doubling roller and heat bonding roller are with 0.2Mpa/cm
2Pressure and first unreel the base material pressing.Bonding film is through the chill roll rolling after cooling, obtains the outer membrane after certain coil diameter.In this process, the metering roll temperature is 45 ℃, and the doubling roller temperature is controlled to be 50 ℃.
4), the outer membrane of selecting to obtain in the step 3) is first to unreel base material, make first to unreel base material under the tension force condition of 180N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 80mm in the coating system, the speed ratio of metering roll is 40%, and applicator roll is by pressure roller 0.25Mpa/cm in addition
2Pressure, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the surface of polyamide BOPA layer of base material, drying tunnel tension force is 99N; Second unreels base material parallel flattening under the tension force condition of 60N, and process doubling roller and heat bonding roller are with suitable 0.2Mpa/cm
2Pressure and the first polyamide BOPA lamination that unreels base material close.Bonding film is through the chill roll rolling after cooling, finally obtains this packaging film after certain coil diameter.In this process, the metering roll temperature is 55 ℃, and the doubling roller temperature is controlled to be 65 ℃.
After the packaging film preparation finishes, according to the required different in width of consumer packaging, length, specification, compound good packaging film is cut the rolling film, to adapt to the requirement of user's automatic packaging machinery.The length and width specification of cutting the volume film should be in strict conformity with customer requirement, end face flatness≤2mm, and layout position does not have skew, and the calm space of a whole page of joint coincide.
In the packaging film in the present embodiment, the thickness of described plating aluminium oxide PET thin layer 10 is 12 μ m, the thickness of first adhesive layer of anti-boiling the 20 is 1 μ m, the thickness of polyamide BOPA layer 30 is 15 μ m, the thickness of second adhesive layer of anti-boiling the 40 is 1 μ m, the thickness of corona layer is 15 μ m, and the thickness in intermediate layer is 70 μ m, and the thickness of hot sealing layer is 15 μ m.
Embodiment 3
1), the preparation of plating aluminium oxide PET film
The PET film is made plating aluminium oxide PET film through the aluminium oxide evaporation process
The aluminium oxide evaporation coating technique is on the basis of traditional aluminum plating process, using the radio frequency plasma treatment system is that the PET film carries out cleaning surfaces and functionalization to the evaporation base material, and recycling microwave plasma treatment system forms oxonium ion and aluminium ion with oxygen and aluminum vapor ionization; Oxonium ion and aluminium ion through ionization fully react formation aluminium oxide uniform deposition at the PET film surface on evaporating area top, thereby form the transparent ALOx evaporation layer of one deck densification.
2), the preparation of RCPP film
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut winding process.
A, extrude in the operation: in three barrels of coextrusion machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, the one-level extruder temperature is: 210 ℃, secondary extruder temperature: 225 ℃, three grades extruder temperatures: 230 ℃; Die head temperature: 225 ℃.
Weight ratio between corona layer 51, intermediate layer 52 and hot sealing layer 53 threes is 1:3:1.
In b, the cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under servicing unit effects such as air knife, vacuum tank, and the casting roller roll surface temperature is 30 ℃, and roll surface temperature is even; The gap of described air knife is 3mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air knife pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in the high-speed and continuous production process, the thickness measuring of film must use contactless tracking to detect automatically.In order to guarantee the thickness uniformity of film, the present invention has adopted beta thickness gauge.By the β ray of radioactive source Kr85 emission, be received by the receiver through the film that needs to measure thickness.The data of measuring gained can feed back to computer automatically and handle, and adjust die gap automatically by the die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, and effect is to eliminate the thickness deviation accumulation, makes the volume film flat appearance after the rolling.The beat frame is done the closed loop moving that track is parallelogram under the driving of motor, its result makes the film move left and right, eliminates film thickness deviation accumulation transversely with this.
In e, the corona operation: sided corona treatment power is that 6.2KW, corona roller pressure are 2.8bar, and the wetting tension of corona surface reaches 42 dynes per centimeter; Obtain the RCPP film after the sided corona treatment.
F, side cut winding process: wrap-up order takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Back cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Touch roll tension force: 100N; Touch roll pressure: 100N; The touch roll back pressure; 2.0bar; Rolling density: 90%.
3), selecting plating aluminium oxide PET film (being the ALOx-PET film) is first to unreel base material, make first to unreel base material under the tension force condition of 100N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 70mm in the coating system, the speed ratio of metering roll is that the gap is 40%, and applicator roll is by pressure roller 0.2Mpa/cm in addition
2Pressure, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the substrate surface, drying tunnel tension force is 100N; Second unreels base material parallel flattening under the tension force condition of 800N, and process doubling roller and heat bonding roller are with 0.3Mpa/cm
2Pressure and first unreel the base material pressing.Bonding film is through the chill roll rolling after cooling, obtains the outer membrane after certain coil diameter.In this process, the metering roll temperature is 45 ℃, and the doubling roller temperature is controlled to be 50 ℃.
4), the outer membrane of selecting to obtain in the step 3) is first to unreel base material, make first to unreel base material under the tension force condition of 160N then, through laterally entering to the correction parallel flattening in back coating system, the gap of metering roll is 75mm in the coating system, the speed ratio of metering roll is 46%, and applicator roll is by pressure roller suitable pressure 0.23Mpa/cm in addition
2, make the double component solvent-free adhesive of anti-the boiling be the glue quantitative and even transfer to first and unreel on the surface of polyamide BOPA layer of base material, drying tunnel tension force is 101N; Second unreels base material under the tension force condition of 58N, and parallel flattening process doubling roller and heat bonding roller are with 0.28Mpa/cm
2Pressure and the first polyamide BOPA lamination that unreels base material close.Bonding film is through the chill roll rolling after cooling, finally obtains this packaging film after certain coil diameter.In this process, the metering roll temperature is 55 ℃, and the doubling roller temperature is controlled to be 65 ℃.
After the packaging film preparation finishes, according to the required different in width of consumer packaging, length, specification, compound good packaging film is cut the rolling film, to adapt to the requirement of user's automatic packaging machinery.The length and width specification of cutting the volume film should be in strict conformity with customer requirement, end face flatness≤2mm, and layout position does not have skew, and the calm space of a whole page of joint coincide.
In the packaging film in the present embodiment, the thickness of described plating aluminium oxide PET thin layer 10 is 12 μ m, the thickness of first adhesive layer of anti-boiling the 20 is 1 μ m, the thickness of polyamide BOPA layer 30 is 15 μ m, the thickness of second adhesive layer of anti-boiling the 40 is 1 μ m, the thickness of corona layer is 17 μ m, and the thickness in intermediate layer is 65 μ m, and the thickness of hot sealing layer is 18 μ m.
The RCPP film of embodiment 1 to embodiment 3 preparation is carried out mechanical property and heat sealability test, and test result is listed in table 1.
The main performance technical indicator of table 1 RCPP film
The main performance technical indicator of the packaging film among above-mentioned three embodiment sees table 2 for details
The main performance technical indicator of table 2 packaging film
Testing result shows, the high-barrier retort packaging film cost of being convenient to direct heating using microwave among the present invention is lower, easy to use, adapt to modernization automated packaging equipment fast, package speed is fast, efficient height, thermophilic digestion that can anti-135 ℃, 40 minutes in sterilization.Packing back flat appearance after the boiling, aesthetic property is good, and sealing-strength is stable, and not stratified, the shelf-life is good than the full performance in Chang'an.Product when in use can be by heating using microwave, and is safe and convenient to use.This packaging film meets modernized anti-boiling, and demand for development such as heating using microwave, and is safe and reliable.
Claims (9)
1. high-barrier retort packaging film of being convenient to direct heating using microwave is characterized in that: this packaging film comprises plating aluminium oxide PET thin layer (10), first adhesive layer of anti-boiling the (20), polyamide film (BOPA) layer (30), second adhesive layer of anti-boiling the (40) and the cast polypropylene film of anti-boiling the (RCPP) layer (50) that fits successively; The described cast polypropylene film of anti-boiling the (RCPP) layer (50) is made of the corona layer (51) that links to each other successively, intermediate layer (52) and hot sealing layer (53), and described corona layer (51) is adjacent with described second adhesive layer of anti-boiling the (40).
2. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 1, it is characterized in that: described first adhesive layer of anti-boiling the (20) and second adhesive layer of anti-boiling the (40) all adopt the double component solvent-free adhesive of anti-the boiling to make.
3. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 1, it is characterized in that: the thickness of described plating aluminium oxide PET thin layer (10) is 12 μ m, the thickness of first adhesive layer of anti-boiling the (20) is 1～3 μ m, the thickness of polyamide film (BOPA) layer (30) is 15 μ m, and the thickness of second adhesive layer of anti-boiling the (40) is 1～3 μ m.
4. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 1, it is characterized in that: described corona layer (51) is the block copolymerization polypropylene layer, intermediate layer (52) is block copolymerization polypropylene and SEBS elastomer composite layer, and hot sealing layer (53) is the block copolymerization polypropylene layer.
5. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 4, it is characterized in that: described SEBS elastomer is polystyrene-poly ethene/polybutene-polystyrene.
6. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 4, it is characterized in that: the part by weight between described corona layer (51), intermediate layer (52) and hot sealing layer (53) three is 1:3:1; The percentage by weight of the block copolymerization polypropylene in the described intermediate layer (52) is 80～85%, and the percentage by weight of polystyrene-poly ethene/polybutene-polystyrene is 15～20%.
7. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 4, it is characterized in that: the thickness of described corona layer (51) is 15～20 μ m, the thickness in intermediate layer (52) is 60～70 μ m, and the thickness of hot sealing layer (53) is 15～20 μ m.
8. one kind according to each described preparation method of being convenient to the high-barrier retort packaging film of direct heating using microwave of claim 1～7, it is characterized in that comprising the steps:
1), the PET film is made plating aluminium oxide PET film through the plating alumina technology;
And the batching of the cast polypropylene film of anti-boiling the (RCPP) prepared the cast polypropylene film of anti-boiling the (RCPP) through extruding operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, side cut winding process successively, the described cast polypropylene film of anti-boiling the (RCPP) is by the corona layer (51) that links to each other successively, intermediate layer (52) and hot sealing layer (53) formation;
2), then by plating aluminium oxide PET film and polyamide film (BOPA) layer earlier by the compound outer membrane that makes of first adhesive layer of anti-the boiling;
3), the corona layer (51) of the polyamide film (BOPA) of described outer membrane layer and the cast polypropylene film of anti-boiling the (RCPP) is combined with each other by first adhesive layer of anti-the boiling by solvent-free compound working procedure, finally obtain this packaging film.
9. the high-barrier retort packaging film of being convenient to direct heating using microwave according to claim 8, it is characterized in that: in the described cooling and shaping operation, casting roller carries out quick cooling and shaping to hot melt film under servicing unit effects such as air knife, vacuum tank, the casting roller roll surface temperature is 20～30 ℃; The gap of described air knife is 2～3mm, and the angle of air knife is 16%.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104228215A (en) * | 2014-09-11 | 2014-12-24 | 黄山永新股份有限公司 | High-barrier cooking-resistant and corrosion-resistant packaging composite membrane and preparation method thereof |
| CN104369495A (en) * | 2014-10-23 | 2015-02-25 | 海南赛诺实业有限公司 | Aluminum oxide coated film coated with self-adhesive acrylic emulsion and preparation method of aluminum oxide coated film |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002053184A (en) * | 2000-08-10 | 2002-02-19 | Dainippon Printing Co Ltd | Packaging material for use in microwave oven and package using the same |
| JP2003155072A (en) * | 2001-11-16 | 2003-05-27 | Dainippon Printing Co Ltd | Packaging material for microwave oven, and packaging bag using it |
| EP1544127A1 (en) * | 2003-12-16 | 2005-06-22 | Amcor Flexibles Europe | Package with perforable lid |
| US20080292893A1 (en) * | 2006-02-28 | 2008-11-27 | Evonik Roehm Gmbh | Heat-Sealing Material for Aluminum Foils and Polyethylene Terephthalate Foils Against Polypropyl, Polyvinyl Chloride, and Polystyrol Containers |
| CN101607458A (en) * | 2009-07-17 | 2009-12-23 | 黄山永新股份有限公司 | Medical paper-plastic composite blue film and preparation method thereof |
| KR20110072794A (en) * | 2009-12-23 | 2011-06-29 | (주)엘지하우시스 | Complex film for vacuum insulation panel and vacuum insulation panel applied the same |
| CN201980564U (en) * | 2010-12-23 | 2011-09-21 | 黄山永新股份有限公司 | Composite film with high barrier property and boiling resistance, and bag with boiling resistance |
| CN102229269A (en) * | 2011-04-02 | 2011-11-02 | 黄山永新股份有限公司 | Transparent steaming and boiling-resistant film and its preparation method |
-
2013
- 2013-04-19 CN CN201310138523.8A patent/CN103192570B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002053184A (en) * | 2000-08-10 | 2002-02-19 | Dainippon Printing Co Ltd | Packaging material for use in microwave oven and package using the same |
| JP2003155072A (en) * | 2001-11-16 | 2003-05-27 | Dainippon Printing Co Ltd | Packaging material for microwave oven, and packaging bag using it |
| EP1544127A1 (en) * | 2003-12-16 | 2005-06-22 | Amcor Flexibles Europe | Package with perforable lid |
| US20080292893A1 (en) * | 2006-02-28 | 2008-11-27 | Evonik Roehm Gmbh | Heat-Sealing Material for Aluminum Foils and Polyethylene Terephthalate Foils Against Polypropyl, Polyvinyl Chloride, and Polystyrol Containers |
| CN101607458A (en) * | 2009-07-17 | 2009-12-23 | 黄山永新股份有限公司 | Medical paper-plastic composite blue film and preparation method thereof |
| KR20110072794A (en) * | 2009-12-23 | 2011-06-29 | (주)엘지하우시스 | Complex film for vacuum insulation panel and vacuum insulation panel applied the same |
| CN201980564U (en) * | 2010-12-23 | 2011-09-21 | 黄山永新股份有限公司 | Composite film with high barrier property and boiling resistance, and bag with boiling resistance |
| CN102229269A (en) * | 2011-04-02 | 2011-11-02 | 黄山永新股份有限公司 | Transparent steaming and boiling-resistant film and its preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 柯贤文: "《功能性包装材料》", 31 May 2004, 化学工业出版社 * |
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