CN101618621A - CPP film with high interfacial bonding strength - Google Patents
CPP film with high interfacial bonding strength Download PDFInfo
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- CN101618621A CN101618621A CN200910059743A CN200910059743A CN101618621A CN 101618621 A CN101618621 A CN 101618621A CN 200910059743 A CN200910059743 A CN 200910059743A CN 200910059743 A CN200910059743 A CN 200910059743A CN 101618621 A CN101618621 A CN 101618621A
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Abstract
The invention discloses a CPP film with high interfacial bonding strength, which is prepared by a surface coating method. The CPP film comprises a CPP base material layer and a coating layer, and the coating layer is polymer microemulsion. A preparation process of the polymer microemulsion comprises the following steps: adding 1-3 percent of emulsifying agent and 97-99 percent of water into a reaction kettle provided with a temperature controller, an N2 ingress pipe, a stirrer and a condensation pipe and carrying out dispersion at 45-65 DEG C; keeping constant temperature for 0.5-1.5 hours after the dispersion; dropping a mixed solution containing 0.5-1 percent of the emulsifying agent and 0.2-3 percent of crosslinking functional monomers into the reaction kettle and the pH being maintained between 3 and 9; after keeping the constant temperature for 1-2 hours, adding an aqueous initiating agent into the reaction kettle and raising the temperature to 75-95 DEG C; and after reacting for 4-6 hours, obtaining the polymer microemulsion. The CPP film can adopt the self-synthesized polymer microemulsion as coating liquid which ensures that the surface tension of the coated CPP film can be adjusted, and after the CPP film is plated with aluminum, the interlaminar strength of the CPP film reaches more than 1.5N/15mm. The CPP film completely meets the requirement on the compound interlaminar strength of gas packaging, and the bag breaking rate of the coated CPP film reaches a standard being lower than 0.1 percent of an industry requirement.
Description
Technical field
The present invention relates to the CPP film of packaging material, particularly a kind of CPP film with high interfacial bonding strength.
Background technology
The CPP film is polypropylene (PP) film of producing by the curtain coating extrusion process in the plastic cement industry.Such film is different with BOPP (two-way polypropylene) film, belongs to non-oriented film.The CPP film has that the transparency is good, glossiness is high, deflection good, moist good, the fine heat-resisting performance of resistance, be easy to characteristics such as heat sealing.The CPP film is applicable to clothes, knit goods and flower packaging bag in a large number through printing, bag, and documents pouch and photograph album are packagings for foodstuff and be applicable to barrier package and the metallized film of decoration.In addition, increase day by day in aspect demands such as food casing, candy external packing (torsion film), medicine packing (infusion bag), Pressure sensitive adhesive tape, cards folder, annulus files.
China's CPP film is started in the eighties in 20th century, has just begun by external introduction individual layer casting apparatus, and wide have only 1m～1.5m, the about 1000 tons/platform of yearly productive capacity～1500 tons/platform.Enter the nineties, from Austrian Lenzin company, Mitsubishi heavy industry, German Reifenhauser, W﹠amp; H, Italian Colines, Dolci, U.S. Battenfeld etc. have introduced multi-layer co-extruded casting films production line, wide 2m～2.5m, 3000 tons/platform of yearly productive capacity～4000 tons/platform.Advanced by leaps and bounds especially since 2000, introduced more advanced production line, mainly with wide 4m～4.5m, the multi-layer co-extruded casting films production line of 5000 tons/platform of yearly productive capacity～6000 tons/platform is main.Wherein Foshan Plastics Group Co., Ltd introduces U.S. David standard production live width 5.4m, and yearly productive capacity reaches 11,000 tons.Simultaneously, home equipment also obtains the fast speed development.According to incompletely statistics, to 2006 the year end China CPP film introduction of production line surpass 77, production capacity is above 390,000 tons; Homemade line surpasses 150, and production capacity surpasses 260,000 tons, adds up to production capacity above 650,000 tons.According to industry survey, the demand of national CPP film in 2006 is near 400,000 tons, and demand was 500,000 tons in 2008.
But often cause the delamination quality accident of CPP and composite bed such as BOPP, BOPET, aluminium coated etc. for habitual at present inert gas packing, so much need address this problem with claiming per family.Problem hereto,
At present more film surface modification processing method is arranged both at home and abroad, specific as follows:
Sided corona treatment: sided corona treatment is meant and is in the impact that plastic sheeting in the high voltage electric field is subjected to the high energy electron that negative electrode penetrates, its surface stays a large amount of electronics indentations, form a spot of active group simultaneously, and then improve the surface tension of film, improve surface adhesion.In a word, sided corona treatment technology is simple, effect obvious, be suitable for online production, extensive use at present.But sided corona treatment has certain damage to the human body of film, has reduced the combination property of material, and this processing method has tangible degradation effect, and especially this effect is more remarkable in damp-heat air.
Plasma processing method: plasma treatment is the conventional process that material surface is handled.Under the condition of low vacuum, under the high voltage electric field reacting gas is dissociated, the positive and negative charged particles of formation is in the surface of film, and then improves the surface property of film; The plasma processing method effect obviously and give material new surface characteristic, controllability is good and do not damage base material.But the equipment complexity, the conditional request harshness is difficult to produce continuously, and products obtained therefrom fringe cost height is unfavorable for market competition.
The surface solution facture: the surface solution facture is comparatively simple surface treatment method.Utilize the solubility or the microsolubility reagent of base material that the base material top layer is handled, form the compound liquid film that comprises substrate molecule and former solute molecule at material surface, along with the volatilization of solvent, form one deck functional membrane at substrate surface, thereby improved the surface property of material.This method is simple, and operability is good, and effect is obvious, but is difficult to select suitable solvent, and the volatilization of organic solvent simultaneously also can bring serious environmental to pollute.
The surface grafting polymerization method: film surface glycerol polymerization method is meant on the macromolecular chain on film surface the active initiation center that forms, and the initiation grafting monomer polymerization generates side chain and improves a kind of polymerization of material surface performance.The effect of this method surface modification is very outstanding, does not destroy the internal structure of film simultaneously again, does not influence the performance of film, yet the generation of film surface active site is difficulty very, does not have mature theory again simultaneously and is instructed, and also is in the experimental study stage at present.
The surface-coated method: the surface-coated method is meant on the film surface and is coated with the resin that last layer contains amphiphilic group, thereby forms the surface tension that a transition zone improves film on its surface, increases surface adhesion force, gives the surface property of new film.Surface-coated method technology is simple, easy to operate, effect is remarkable, can produce continuously, and the product fringe cost is low, helps market competition.If with water is that solvent can be avoided contaminated environment, be the surface modification technology of a kind of pure " green ".
Except that the surface treatment method of above-mentioned introduction, also have surperficial flame modification method, surface chemistry vapour deposition process, surface physics vapour deposition process and surperficial mechanically modifying method etc.Take all factors into consideration factor in many ways, the surface-coated method is the extraordinary method of application prospect, but relevant coating resin but is a vacancy always, so just can not obtain a kind of CPP film of high interfacial bonding strength.
Summary of the invention
The present invention provides a kind of CPP film with high interfacial bonding strength for solving the problems of the technologies described above, and can adopt the mode of coating to solve that the surface tension of CPP corona treated film is low, degradation effect is obvious etc. to trouble the problem of industry development.
Technical scheme of the present invention is as follows:
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and it is characterized in that: comprise CPP substrate layer, coating layer, described coating layer is a polymer micro-emulsion, and the preparation process of polymer micro-emulsion is as follows: temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 45～65 ℃ condition; Disperseed back constant temperature 0.5～1.5 hour, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1～2 hour again, adding water-based initator is warming up to 75～95 ℃, reacts to make polymer micro-emulsion after 4～6 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
By the drum-type dispense tip polymer micro-emulsion is coated on the CPP base material.
The oven drying temperature of surface-coated method is set at 40～85 ℃, and drying tunnel length is 8～15m, has not both had the stretcher strain of film with this understanding, again can quick-drying order.
Beneficial effect of the present invention is as follows:
The present invention can adopt the mode of coating to solve that the surface tension of CPP corona treated film is low, degradation effect is obvious etc. to trouble the problem of industry development; Adopt synthetic voluntarily polymer micro-emulsion as coating fluid, the CPP surface tension that reaches after the coating is adjustable, and its interlaminar strength of back of aluminizing reaches more than the 1.5N/15mm; Be useful for the requirement of gas flush packaging fully, use its broken bag rate of this kind coating CPP film to reach 0.1% the standard of being lower than of industry requirement compound interface layer intensity.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is a coating process process schematic diagram of the present invention
The specific embodiment
Embodiment 1
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and comprises CPP substrate layer, coating layer, and described coating layer is that the preparation process of polymer micro-emulsion is as follows:
A, temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 65 ℃ condition;
Solution process constant temperature after B, the dispersion 0.5 hour, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1 hour again, adding water-based initator is warming up to 75 ℃, reacts to make polymer micro-emulsion after 6 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
Described water-based initator uses potassium peroxydisulfate.
By the drum-type dispense tip polymer micro-emulsion is coated on the CPP base material.
The oven drying temperature of surface-coated method is set at 40～85 ℃, and drying tunnel length is 8～15m, has not both had the stretcher strain of film with this understanding, again can quick-drying order.
Embodiment 2
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and comprises CPP substrate layer, coating layer, and described coating layer is that the preparation process of polymer micro-emulsion is as follows:
A, temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 60 ℃ condition;
Solution process constant temperature after B, the dispersion 1 hour, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1 hour again, adding water-based initator is warming up to 85 ℃, reacts to make polymer micro-emulsion after 5 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
Described water-based initator uses potassium peroxydisulfate.
Embodiment 3
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and comprises CPP substrate layer, coating layer, and described coating layer is that the preparation process of polymer micro-emulsion is as follows:
A, temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 45 ℃ condition;
Solution process constant temperature after B, the dispersion 1.5 hours, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 2 hours again, adding water-based initator is warming up to 90 ℃, reacts to make polymer micro-emulsion after 4.5 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
Described water-based initator uses ammonium persulfate.
Embodiment 4
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and comprises CPP substrate layer, coating layer, and described coating layer is that the preparation process of polymer micro-emulsion is as follows:
A, temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 55 ℃ condition;
Solution process constant temperature after B, the dispersion 1.2 hours, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1.5 hours again, adding water-based initator heats up 80 ℃, reacts to make polymer micro-emulsion after 5.5 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
Described water-based initator uses ammonium persulfate.
Embodiment 5
CPP film with high interfacial bonding strength adopts the surface-coated method to make, and comprises CPP substrate layer, coating layer, and described coating layer is that the preparation process of polymer micro-emulsion is as follows:
A, temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 50 ℃ condition;
Solution process constant temperature after B, the dispersion 1.5 hours, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1.5 hours again, adding water-based initator is warming up to 90 ℃, reacts to make polymer micro-emulsion after 4.5 hours.
Described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
Described water-based initator uses potassium peroxydisulfate.
Claims (4)
1, CPP film with high interfacial bonding strength adopts the surface-coated method to make, and it is characterized in that: comprise CPP substrate layer, coating layer, described coating layer is a polymer micro-emulsion, and the preparation process of polymer micro-emulsion is as follows: temperature controller, N are being housed
2In the reactor of ingress pipe, agitator and condenser pipe, the emulsifying agent of adding 1～3% and the water of 97-99% disperse under 45～65 ℃ condition; Disperseed back constant temperature 0.5～1.5 hour, the mixed solution that adds the crosslinking functionality monomer contain 0.5～1% emulsifying agent and 0.2～3% again splashes in the reactor, the pH value maintains in 3～9, constant temperature is after 1～2 hour again, adding water-based initator is warming up to 75～95 ℃, reacts to make polymer micro-emulsion after 4～6 hours.
2, CPP film with high interfacial bonding strength according to claim 1, it is characterized in that: described emulsifying agent contains methyl methacrylate, ethyl acrylate, acrylic acid, hydroxy-ethyl acrylate, hydroxyethyl methacrylate (mass fraction), more than each component according to mass fraction: 5～80%, 0～40%, 0～20%, 5～50%, 1～30% carries out proportioning, and the residual mass mark is a water.
3, CPP film with high interfacial bonding strength according to claim 1 and 2 is characterized in that: by the drum-type dispense tip polymer micro-emulsion is coated on the CPP base material.
4, CPP film with high interfacial bonding strength according to claim 1 is characterized in that: the oven drying temperature of described surface-coated method is set at 40～85 ℃, and drying tunnel length is 8～15m.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886936A (en) * | 2011-07-18 | 2013-01-23 | 上海永超真空镀铝有限公司 | BOPP aluminum laminated film and preparation method thereof |
| CN104185783A (en) * | 2012-03-27 | 2014-12-03 | 杰富意钢铁株式会社 | Method for evaluating inter-coal adhesion |
| CN105690946A (en) * | 2015-11-29 | 2016-06-22 | 惠州卫生职业技术学院 | Formula of CPP film and production technology thereof |
| CN106626646A (en) * | 2015-10-30 | 2017-05-10 | 东莞市伟达包装制品有限公司 | Formula and production process of CPP film |
| CN108285543A (en) * | 2018-01-31 | 2018-07-17 | 苏州维洛克电子科技有限公司 | A kind of preparation method of antibacterial polyester sheet |
-
2009
- 2009-06-24 CN CN200910059743A patent/CN101618621A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102886936A (en) * | 2011-07-18 | 2013-01-23 | 上海永超真空镀铝有限公司 | BOPP aluminum laminated film and preparation method thereof |
| CN104185783A (en) * | 2012-03-27 | 2014-12-03 | 杰富意钢铁株式会社 | Method for evaluating inter-coal adhesion |
| CN104185783B (en) * | 2012-03-27 | 2017-06-09 | 杰富意钢铁株式会社 | The evaluation method of the caking property between coal |
| CN106626646A (en) * | 2015-10-30 | 2017-05-10 | 东莞市伟达包装制品有限公司 | Formula and production process of CPP film |
| CN105690946A (en) * | 2015-11-29 | 2016-06-22 | 惠州卫生职业技术学院 | Formula of CPP film and production technology thereof |
| CN108285543A (en) * | 2018-01-31 | 2018-07-17 | 苏州维洛克电子科技有限公司 | A kind of preparation method of antibacterial polyester sheet |
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Open date: 20100106 |