CN104986437A - Production method for UV resistant unstretched polypropylene metalized film - Google Patents
Production method for UV resistant unstretched polypropylene metalized film Download PDFInfo
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- CN104986437A CN104986437A CN201510285203.4A CN201510285203A CN104986437A CN 104986437 A CN104986437 A CN 104986437A CN 201510285203 A CN201510285203 A CN 201510285203A CN 104986437 A CN104986437 A CN 104986437A
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Abstract
The invention discloses a production method for a UV resistant unstretched polypropylene metalized film. Materials of a corona layer comprise: 92-94% of ternary polypropylene random copolymer, 4.5-5.5% of abherent, 1.5-2.5% of zeolite master batch. Materials of a core layer comprise 100% ternary co-polypropylene. Materials of a heat-seal layer comprise 92.9-93.9% of homo-polypropylene, 3% of abherent, 2.5-3.5% of slipping agent, 0.6% of antistatic agent, and 0.1-0.3% of ultraviolet light absorber. The method comprises the following steps: batching, mixing, plasticizing, forming, casting sheet, measuring thickness, performing corona, rolling up, curing, and aluminizing. Through adding the ultraviolet light absorber UV531, the film can strongly absorb ultraviolet rays in wavelength of 270-330 nm. The corona layer uses the abherent in specific proportion, so an aluminum coated layer is not easy to fall off. The corona layer is added with natural zeolite powders. Since the zeolite powders have strong adsorbability, the aluminum coated layer can maintain relatively high surface tension. The core layer is not added with a thermal synthesis additive, so that the core layer would not generate any precipitate in a reaction process, thereby ensuring adhesion effect of aluminizing.
Description
Technical field
The invention belongs to packing production field, particularly a kind of production method of uvioresistant un-stretched polypropylene metallized film.
Background technology
Common un-stretched polypropylene aluminizer is packaged in ultraviolet and presents a note to the oxidizing reaction caused, and make article shelf lives in short, packaging in film service life short, occur rotten even too early, especially foodstuff, out of reach packs the requirement of guaranteeing the quality.
The current domestic common cast polypropylene aluminizer aluminium lamination adhesive ability that do not stretch is below 0.6 newton, and aluminium lamination adhesive ability is not high, there will be aluminium lamination large peeling with the cast polypropylene film of aluminizing that this common substrate is produced with other base material compound tense.
Summary of the invention
The object of the present invention is to provide a kind of production method of uvioresistant un-stretched polypropylene metallized film, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of production method of uvioresistant un-stretched polypropylene metallized film, wherein material comprises corona layer, sandwich layer, hot sealing layer, wherein, corona layer is made up of the following component in % by weight: ternary atactic copolymerized polypropene 92 ~ 94%, antiseize agent 4.5 ~ 5.5%, zeolite masterbatch 1.5 ~ 2.5%;
Sandwich layer is made up of the following component in % by weight: ternary polymerized polypropylene 100%;
Hot sealing layer is made up of the following component in % by weight: homo-polypropylene 92.6 ~ 93.8%, antiseize agent 3%, slipping agent 2.5 ~ 3.5%, antistatic additive 0.6%, ultraviolet absorbent 0.1 ~ 0.3%;
The production method of above-mentioned a kind of uvioresistant un-stretched polypropylene metallized film, comprises the following steps:
A), prepare burden: according to aforementioned proportion relation, raw material preparation is good;
B) mix: by each layer raw material mix and blend 3 minutes in high-speed mixer separately, mix;
C), extrusion plasticizing: respectively each layer material is sent into extruder one, extruder two, extruder three respectively in three units, fusion of heating is carried out in extruder, carry out extrusion plasticizing, the temperature in described extruder one, extruder two, extruder three is identical, and is 245 DEG C;
D), composite molding: in described three units, the mouth of extruder one, extruder two, extruder three is connected with die head through runner one, runner two, runner three respectively, the material exported at die head Nei Jiang No. tri-extruder carries out composite layered, adjust after corresponding products thickness through die head and export composite sheet, in die head, temperature is 245 DEG C;
E), slab: coordinate the mode of water-cooled to carry out cooling and shaping by sharp cooling roll the composite sheet exported by die head, in described slab step, the temperature of sharp cooling roll and water is 27 DEG C ~ 32 DEG C;
F), infrared system is adopted to carry out thickness measuring feedback;
G), corona: the process of corona spark is carried out to the surface of corona layer;
H), rolling: by winder, rolling is carried out to form film, speed 60 ~ 70m/min;
I), slaking: 27 ~ 28 DEG C of slakings 48 hours.
J), aluminize: reel drum film is placed in vacuum chamber, close vacuum chamber.When degree of vacuum reaches more than 4 × 10-4 pa, evaporation boat is warming up to 1300 DEG C ~ 1400 DEG C, and then the aluminium wire that purity is 99.9% is delivered on evaporation boat continuously.Regulate the speed of unreeling, rolling speed, wire feed rate and evaporation capacity, open cooling source, cryogenic temperature is transferred to less than-15 DEG C, aluminium wire is melted continuously on evaporation boat, evaporates, thus the aluminium lamination forming one deck light after the film surface cooling of movement is metallized film.
Described antiseize agent is made up of the following component accounting for antiseize agent % by weight: polypropylene 95%, micro glass bead 2%, polypropylene wax 3%.
Corona tension force is 48mN/m.
Zeolite masterbatch adds the granulation of 80 ~ 90wt% ternary polymerized polypropylene blending extrusion by the natural zeolite powder of 10 ~ 20wt% and obtains.Wherein, zeolite powder is prepared by the following method: natural zeolite ore is put into Muffle furnace and cure at least four hours through 750 DEG C, moisture in removing hole or other low molecular compounds, then in ball grinding mill, ball milling wears into 3 ~ 10 microns of fine powders, again through the particle that 1000 ~ 1500 object micro-mesh removings are greater than 10 microns, obtained zeolite powder.
In the process of aluminizing, often produce a volume product, be stained with alcohol with clean rag and each roller of equipment is cleaned.
In the process of aluminizing, aluminum layer thickness is 2.2 sheet resistances.
Described ultraviolet absorbent is ultraviolet absorbent UV-531.
Corona layer selects the PP of oil of SPC F800EDF, and sandwich layer selects the PP of oil of SPC FC801, and hot sealing layer selects the PP of Singapore import FL7623L.
Compared with prior art, the invention has the beneficial effects as follows:
By adding ultraviolet absorbent UV531, can absorbing wavelength be the ultraviolet of 270 ~ 330nm consumingly, good with polypropylene compatible, volatility is little, can anti-purple, the antioxygenic property of enhanced film, and keeping the characteristic of original film, the film made can stop oxidizing reaction caused by ultraviolet illumination by actv., solves short problem in film in prior art service life, by adding the antiseize agent of specific components, make the thickness of film thinner, and corona layer has selected atactic copolymerized polypropene to coordinate the antiseize agent of special ratios as major ingredient, make to be achieved compared with the swoon maintenance of handling property of forceful electric power, make aluminium coated difficult drop-off, a certain amount of natural zeolite powder is added at corona layer, because zeolite powder has a large amount of holes and strong adsorbability, in hole, preserved on the one hand the low polymer produced in catalyst residue in a part of polypropylene and polymerization process, another side, because mazy hole is crisscross, make that those low polymers becoming Showed Very Brisk due to the impact of high temperature aluminum molecule also do not impact surface and film is cooled, thus actv. prevents part low polymer to go out top layer, thus make the aspect of aluminizing keep higher surface tension, sandwich layer only uses ternary polymerized polypropylene as raw material simultaneously, does not add heat seal additive, makes sandwich layer not have any precipitate in course of reaction, further ensure the wetting tension of lower surface, thus the adhesion effect that guarantee is aluminized.
Detailed description of the invention
The production method of specific embodiment to a kind of uvioresistant un-stretched polypropylene metallized film of the present invention is described further below.
Embodiment 1
Material comprises corona layer, sandwich layer, hot sealing layer, and wherein, corona layer is made up of the following component in % by weight: ternary atactic copolymerized polypropene 94%, antiseize agent 4.5%, zeolite masterbatch 1.5%;
Sandwich layer is made up of the following component in % by weight: ternary polymerized polypropylene 100%;
Hot sealing layer is made up of the following component in % by weight: homo-polypropylene 93.8%, antiseize agent 3%, slipping agent 2.5%, antistatic additive 0.6%, ultraviolet absorbent UV-531 0.1%;
Corona layer selects the PP of oil of SPC F800EDF, and sandwich layer selects the PP of oil of SPC FC801, and hot sealing layer selects the PP of Singapore import FL7623L.
Described antiseize agent is made up of the following component accounting for antiseize agent % by weight: polypropylene 95%, micro glass bead 2%, polypropylene wax 3%.
Zeolite masterbatch adds the granulation of 80 ~ 90wt% ternary polymerized polypropylene blending extrusion by the natural zeolite powder of 10 ~ 20wt% and obtains.Wherein, zeolite powder is prepared by the following method: natural zeolite ore is put into Muffle furnace and cure at least four hours through 750 DEG C, moisture in removing hole or other low molecular compounds, then in ball grinding mill, ball milling wears into 3 ~ 10 microns of fine powders, again through the particle that 1000 ~ 1500 object micro-mesh removings are greater than 10 microns, obtained zeolite powder.
The production method of above-mentioned a kind of uvioresistant un-stretched polypropylene metallized film, comprises the following steps:
A), prepare burden: according to aforementioned proportion relation, raw material preparation is good;
B) mix: by each layer raw material mix and blend 3 minutes in high-speed mixer separately, mix;
C), extrusion plasticizing: respectively each layer material is sent into extruder one, extruder two, extruder three respectively in three units, fusion of heating is carried out in extruder, carry out extrusion plasticizing, the temperature in described extruder one, extruder two, extruder three is identical, and is 245 DEG C;
D), composite molding: in described three units, the mouth of extruder one, extruder two, extruder three is connected with die head through runner one, runner two, runner three respectively, the material exported at die head Nei Jiang No. tri-extruder carries out composite layered, adjust after corresponding products thickness through die head and export composite sheet, in die head, temperature is 245 DEG C;
E), slab: coordinate the mode of water-cooled to carry out cooling and shaping by sharp cooling roll the composite sheet exported by die head, in described slab step, the temperature of sharp cooling roll and water is 27 DEG C ~ 32 DEG C;
F), infrared system is adopted to carry out thickness measuring feedback;
G), corona: the process of corona spark is carried out to the surface of corona layer, makes its corona tension force become 48mN/m;
H), rolling: by winder, rolling is carried out to form film, speed 60 ~ 70m/min;
I), slaking: 27 ~ 28 DEG C of slakings 48 hours.
J), aluminize: reel drum film is placed in vacuum chamber, close vacuum chamber.When degree of vacuum reaches 4 × 10
-4during more than pa, evaporation boat is warming up to 1300 DEG C ~ 1400 DEG C, and then the aluminium wire that purity is 99.9% is delivered on evaporation boat continuously.Regulate the speed of unreeling, rolling speed, wire feed rate and evaporation capacity, open cooling source, cryogenic temperature is lowered to less than-15 DEG C from-5 DEG C, aluminium wire is melted continuously on evaporation boat, evaporates, thus the aluminium lamination forming one deck light after the film surface cooling of movement is metallized film, often produce a volume product, be stained with alcohol with clean rag to clean each roller of equipment, prevent from the aluminium slag on aluminium roller from causing CPP film scratch thus increase friction coefficient, in the process of aluminizing, aluminum layer thickness adjusts to 2.2 sheet resistances by 2.0 sheet resistances of routine.
The difference of following embodiment and embodiment 1 is:
Embodiment 2
Corona layer is made up of the following component in % by weight: ternary atactic copolymerized polypropene 93%, antiseize agent 5%, zeolite masterbatch 2%;
Sandwich layer is made up of the following component in % by weight: ternary polymerized polypropylene 100%;
Hot sealing layer is made up of the following component in % by weight: homo-polypropylene 93.2%, antiseize agent 3%, slipping agent 3%, antistatic additive 0.6%, ultraviolet absorbent UV-531 0.2%;
Embodiment 3
Corona layer is made up of the following component in % by weight: ternary atactic copolymerized polypropene 92%, antiseize agent 5.5%, zeolite masterbatch 2.5%;
Sandwich layer is made up of the following component in % by weight: ternary polymerized polypropylene 100%;
Hot sealing layer is made up of the following component in % by weight: homo-polypropylene 92.6%, antiseize agent 3%, slipping agent 3.5%, antistatic additive 0.6%, ultraviolet absorbent UV-531 0.3%.
Claims (8)
1. the production method of a uvioresistant un-stretched polypropylene metallized film, it is characterized in that, wherein material comprises corona layer, sandwich layer, hot sealing layer, wherein, corona layer is made up of the following component in % by weight: ternary atactic copolymerized polypropene 92 ~ 94%, antiseize agent 4.5 ~ 5.5%, zeolite masterbatch 1.5 ~ 2.5%;
Sandwich layer is made up of the following component in % by weight: ternary polymerized polypropylene 100%;
Hot sealing layer is made up of the following component in % by weight: homo-polypropylene 92.6 ~ 93.8%, antiseize agent 3%, slipping agent 2.5 ~ 3.5%, antistatic additive 0.6%, ultraviolet absorbent 0.1 ~ 0.3%;
The production method of above-mentioned a kind of uvioresistant un-stretched polypropylene metallized film, comprises the following steps:
A), prepare burden: according to aforementioned proportion relation, raw material preparation is good;
B) mix: by each layer raw material mix and blend 3 minutes in high-speed mixer separately, mix;
C), extrusion plasticizing: respectively each layer material is sent into extruder one, extruder two, extruder three respectively in three units, fusion of heating is carried out in extruder, carry out extrusion plasticizing, the temperature in described extruder one, extruder two, extruder three is identical, and is 245 DEG C;
D), composite molding: in described three units, the mouth of extruder one, extruder two, extruder three is connected with die head through runner one, runner two, runner three respectively, the material exported at die head Nei Jiang No. tri-extruder carries out composite layered, adjust after corresponding products thickness through die head and export composite sheet, in die head, temperature is 245 DEG C;
E), slab: coordinate the mode of water-cooled to carry out cooling and shaping by sharp cooling roll the composite sheet exported by die head, in described slab step, the temperature of sharp cooling roll and water is 27 DEG C ~ 32 DEG C;
F), infrared system is adopted to carry out thickness measuring feedback;
G), corona: the process of corona spark is carried out to the surface of corona layer;
H), rolling: by winder, rolling is carried out to form film, speed 60 ~ 70m/min;
I), slaking: 27 ~ 28 DEG C of slakings 48 hours;
J), aluminize: reel drum film is placed in vacuum chamber, close vacuum chamber;
When degree of vacuum reaches 4 × 10
-4during more than pa, evaporation boat is warming up to 1300 DEG C ~ 1400 DEG C, and then the aluminium wire that purity is 99.9% is delivered on evaporation boat continuously;
Regulate the speed of unreeling, rolling speed, wire feed rate and evaporation capacity, open cooling source, cryogenic temperature is transferred to less than-15 DEG C, aluminium wire is melted continuously on evaporation boat, evaporates, thus the aluminium lamination forming one deck light after the film surface cooling of movement is metallized film.
2. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, described antiseize agent is made up of the following component accounting for antiseize agent % by weight: polypropylene 95%, micro glass bead 2%, polypropylene wax 3%.
3. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, corona tension force is 48mN/m.
4. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, zeolite masterbatch adds the granulation of 80 ~ 90wt% ternary polymerized polypropylene blending extrusion by the natural zeolite powder of 10 ~ 20wt% and obtains;
Wherein, zeolite powder is prepared by the following method: natural zeolite ore is put into Muffle furnace and cure at least four hours through 750 DEG C, moisture in removing hole or other low molecular compounds, then in ball grinding mill, ball milling wears into 3 ~ 10 microns of fine powders, again through the particle that 1000 ~ 1500 object micro-mesh removings are greater than 10 microns, obtained zeolite powder.
5. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, in the process of aluminizing, has often produced a volume product, is stained with alcohol cleans each roller of equipment with clean rag.
6. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, in the process of aluminizing, aluminum layer thickness is 2.2 sheet resistances.
7. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, is characterized in that, described ultraviolet absorbent is ultraviolet absorbent UV-531.
8. the production method of uvioresistant un-stretched polypropylene metallized film according to claim 1, it is characterized in that, corona layer selects the PP of oil of SPC F800EDF, and sandwich layer selects the PP of oil of SPC FC801, and hot sealing layer selects the PP of Singapore import FL7623L.
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| CN107351500A (en) * | 2017-08-24 | 2017-11-17 | 安徽松泰包装材料有限公司 | A kind of production method of high-barrier, high surface tension CPP metallized films |
| CN108219172A (en) * | 2018-02-09 | 2018-06-29 | 武汉理工大学 | A kind of radiation cooling film and preparation method thereof |
| CN108456322A (en) * | 2018-03-16 | 2018-08-28 | 武汉理工大学 | A kind of thermal isolation film and preparation method thereof based on zircon and polyethylene |
| CN109177410A (en) * | 2018-09-03 | 2019-01-11 | 安徽金田高新材料股份有限公司 | A kind of blue protection film and preparation method thereof |
| WO2020087849A1 (en) * | 2018-10-29 | 2020-05-07 | 上海若祎新材料科技有限公司 | High melt strength polypropylene thin film composition, thin film and use thereof |
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Application publication date: 20151021 |