CN109824925A - A kind of film and preparation method thereof using PCR-PE preparation - Google Patents
A kind of film and preparation method thereof using PCR-PE preparation Download PDFInfo
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- CN109824925A CN109824925A CN201910018810.2A CN201910018810A CN109824925A CN 109824925 A CN109824925 A CN 109824925A CN 201910018810 A CN201910018810 A CN 201910018810A CN 109824925 A CN109824925 A CN 109824925A
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Abstract
The invention discloses a kind of method for preparing film using PCR-PE, the raw material including (1) film is constituted by following mass percent: PCR-PE30~70%；Polyethylene virgin material particle 20~60%；Antioxidant 1~5%；Antiodorant 1~3%；Essence 0.5~1%；Processing aid 0.5~1%；(2) mixing of raw material: weighing above-mentioned raw materials, and by PCR-PE pre-fusion, pre-fusion temperature is 150~210 DEG C, is granulated again after the PCR-PE after pre-fusion is crossed 30/80/150/80/30 double strainer；PCR-PE particle and polyethylene virgin material particle are mixed, mixing temperature is 150~190 DEG C, and antioxidant, antiodorant, essence and processing aid are added in mixture；(3) by mixed raw material through multi-layer extrusion machine Blown Film.The problem of present invention provides a kind of method for preparing film using PCR-PE, eliminates the peculiar smell that PCR-PE is generated in production thin-film process, and the crystal point generated in plasticizing process, paste point, stain etc. influence appearance and heat-sealing.
Description
Technical field
The present invention relates to flexible packaging technical fields, and in particular to a kind of application PCR-PE prepares film and its preparation side
Method.
Background technique
Plastics are applied to every field as one of most widely used functional material on a large scale.Based on it
The excellent characteristics such as inexpensive, light, corrosion-resistant, easy to process, plastics substituted metal, timber, paper etc. more and more give people
Life, production bring huge convenience.
But the use of a large amount of plastic products also directly results in the generation of solid waste material, the production of waste plastic in China
Life is generally mostly derived from: first is that the leftover bits and pieces occurred in process of manufacture, leftover pieces and defect ware etc.；Second is that by civil canal
The plastic wastes (plastic film, plastic bottle, polybag etc.) in road or government regulation forced collection；Third is that discarded from family, business
In object, the plastic wastes (woven bag, container etc.) cleaned out of classifying.As limited resource is more and more nervous, actively development can
It recycles, it has also become the major issue concerning society and ecology.The processing of waste plastic has actively far-reaching meaning with recycling
Justice.
PCR full name is that consumer's obsolete material is recycled, and the full name of PE is polyethylene, and PCR-PE Chinese name is to disappear
Polyethylene component in the person's of expense obsolete material.
At present in Soft Roll field, most of enterprise makes heat sealability function film using dew material, in case supply corresponds to
Compound workshop process, generate and can satisfy the plyability packing film of performance indexes, to use economic convenient and fast mode
Maximally efficient packaging solution is provided.
Summary of the invention
It is an object of the invention to overcome defect existing in the prior art, provides and a kind of prepare film using PCR-PE
Method eliminates the peculiar smell that PCR-PE is generated in production thin-film process, the shadows such as the crystal point generated in plasticizing process, paste point, stain
The problem of ringing appearance and heat-sealing, provides a kind of multi-layer co-extruded property thin-film technique using PCR-PE applied to flexible packaging.This
It invents another purpose to be, a kind of laminated film prepared using PCR-PE is provided, the laminated film processing is stablized, can be answered
For flexible packaging field.
To achieve the above object, the technical scheme is to design a kind of method for preparing film using PCR-PE, packets
Include following steps:
(1) raw material of film is constituted by following mass percent: PCR-PE30~70%；Polyethylene virgin material particle 20~
60%；Antioxidant 1~5%；Antiodorant 1~3%；Essence 0.5~1%；Processing aid 0.5~1%；
(2) raw material mixes: weighing above-mentioned raw materials, by PCR-PE pre-fusion, pre-fusion temperature is 150~210 DEG C, by fritting
PCR-PE after melting is granulated again after crossing 30/80/150/80/30 double strainer；PCR-PE particle and polyethylene virgin material particle are mixed
It closes, mixing temperature is 150~190 DEG C, and antioxidant, antiodorant, essence and processing aid are added in mixture；
(3) by the raw material mixed in (2) through multi-layer extrusion machine Blown Film.
PCR full name is that consumer's obsolete material is recycled, and the full name of PE is polyethylene, and PCR-PE Chinese name is to disappear
Polyethylene component in the person's of expense obsolete material.The present invention is granulated again using the polyethylene component in consumer's obsolete material, is utilized
Antioxidant is easily activated peroxy-radical in the case of a high temperature, easily discharges radical-scavenging in heated situation using peroxy-radical
Group consumes macromolecular chain in plasticizing process in the case of a high temperature and is broken the small molecule free radical material dissociated and, terminates molten
Macromolecular chain cracks again when melting.Using the antioxidant that occupy gross mass component ratio be about 1%~5%, can be effectively controlled poly-
The crystal point that object is also easy to produce in plasticizing process is closed, point is pasted, stain etc. influences problem of appearance.
Cooperate with anti-oxidant action in PCR-PE material using the antiodorant that gross mass ratio is about 1~3% is occupied,
The penetrating odor being also easy to produce during adsorbed polymer material melts, and peculiar smell further is covered with essence smell, effectively solve
Certainly for PCR-PE material in process of production because recycling ratio is higher, easily there is crystal point, stain and stimulation in the film of PCR-PE production
Property smell problem.
The PCR-PE is high density polyethylene (HDPE) or low density polyethylene (LDPE) as a preferred technical solution,.Low density polyethylene
There are about 8~40 long branches on every 1000 carbon atoms of alkene main chain；Have on every 1000 carbon atoms of high density polyethylene (HDPE) main chain
Therefore the branch shorter less than 5 helps to improve the mechanical property of film using the content of high density polyethylene (HDPE).
The antioxidant includes primary antioxidant Hinered phenols and auxiliary anti-oxidant phosphite ester as a preferred technical solution,
The ratio of class, primary antioxidant and pro-oxygenic agent is 4:1.Antioxidant, which is used in compounding, can be obviously improved antioxidant effect.The main antioxygen
Agent and auxiliary anti-oxidant contain peroxy-radical.The Hinered phenols are phenolic antioxidant 1790, antioxidant 5057, antioxidant
1010, phosphite ester antioxidant 168, HP-10.The intermiscibility and heat resistance of phosphite ester antioxidant and polyolefin are preferable,
Between phenolic antioxidant and phosphorous acid esters and with there are synergistic effects.
The antiodorant is the zeolite or porous that average grain diameter is 100~300 nanometers as a preferred technical solution,
Ceramic particle or graphene.By the antiodorant with micropore in the way of physical absorption by off-flavor elimination.
The reinforced modifier is EP rubbers EPM, ethylene propylene diene rubber EPDM, ethylene-as a preferred technical solution,
The mixture of one or both of vinyl acetate co-polymer EVA.
The processing aid is talcum powder, PE wax as a preferred technical solution, tetrafluoroethene, one in hexafluoropropene
Kind or two kinds of mixing.Using the temperature tolerance of fluorine class polyolefin plastics and the incompatibility with metal class material, using it as melt
Lubricant between metallic walls.Talcum powder can significantly improve the easy Kekelé structure count of product, improve the heat resistance of material.
PCR-PE after melting as a preferred technical solution, passes through the porous mesh filter screen of multilayer 30/80/150/80/30.
The PCR-PE particle for selecting the mode being filtered for multiple times to remove the impurity in PCR-PE and do not melt completely, improves reclaimed materials
Plasticity.
The PCR-PE film is three layers of blown type film.
A kind of compound sheet material using PCR-PE film preparation, including outer membrane, barrier layer and internal layer membrane；Wherein
Outer membrane and/or internal layer membrane are made of hot sealing layer, sandwich layer and composite layer respectively again；Wherein outer membrane and/or internal layer are thin
The sandwich layer and composite layer of film contain PCR-PE；The barrier layer is aluminium layer or ethylene and ethenol copolymer film；The outer layer
Film, barrier layer and internal layer membrane are compounded to form the compound sheet material containing PCR-PE by extrusion or dry type.It is described simultaneously
PCR-PE multilayer blow moulding type film can provide the material with heat sealability for later process, can be used for making different types of soft
Property packaging product, such as MULTILAYER COMPOSITE shape Flexible tube for toothpaste, the small-sized Packing bag for handkerchief paper of personal nursing, packing particle inner lining bag etc..
The advantages and beneficial effects of the present invention are: being effectively reduced polyethylene using the film of PCR-PE particle preparation
The use of virgin material particle, collaboration use antioxidant and antiodorant, and it is inclined effectively to solve PCR-PE use ratio in production process
, there is the problem of sharp aroma and product appearance in Gao Shi, when processing, and the recycling ratio of PCR-PE material greatly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram using the compound sheet material of PCR-PE film preparation；
In figure: 1, outer membrane；2, internal layer membrane；3, the hot sealing layer of outer membrane；4, the sandwich layer of outer membrane；5, outer layer
The composite layer of film；6, adhesive layer；7, barrier layer；8, the composite layer of internal layer membrane；9, the sandwich layer of internal layer membrane；10, internal layer is thin
The hot sealing layer of film.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
A method of film is prepared using PCR-PE, comprising the following steps:
(1) raw material of film is constituted by following mass percent:
PCR-PE particle 32%；
Polyethylene virgin material particle 60%；
Antioxidant (ratio of phenolic antioxidant 1790 and irgasfos 168 is 4:1) 2%；
Antiodorant (zeolite and porous ceramic particles 1:1 mixture) 3%, antiodorant is that average grain diameter is 100
Nanometer；
Essence 2%；
Tetrafluoroethene 1%；
(2) it is pre-mixed: weighing above-mentioned raw materials, by PCR-PE particle pre-fusion, melting temperature is 200 DEG C, after melting
Reclaiming type polyethylene crosses 30/80/150/80/30 mesh filter screen of multilayer；By polyethylene virgin material particle pre-fusion, melting temperature 150
℃；Filtered PCR-PE and polyethylene virgin material are mixed, antioxidant, antiodorant, essence and processing is added in mixed liquid
Auxiliary agent；
(3) by above-mentioned mixed raw material through multi-layer extrusion machine Blown Film.
A kind of compound sheet material of PCR-PE film preparation, including outer membrane 1, barrier layer 7 and internal layer membrane 2；Its China and foreign countries
Layer film is made of the composite layer 5 of the hot sealing layer 3 of outer membrane, the sandwich layer 4 of outer membrane and outer membrane；Internal layer membrane is by interior
The hot sealing layer 10 of the composite layer 8 of layer film, the sandwich layer 9 of internal layer membrane and internal layer membrane is constituted；Wherein outer membrane and internal layer are thin
Sandwich layer and composite layer in film contain above-mentioned PCR-PE；The barrier layer is aluminium layer or ethylene and ethenol copolymer film；
The outer membrane, barrier layer and internal layer membrane pass through respectively adhesive layer using dry type is compound or extruded type be compounded to form containing
The compound sheet material of PCR-PE.
Embodiment 2
A method of film is prepared using PCR-PE, comprising the following steps:
(1) raw material of film is constituted by following mass percent:
PCR-PE particle 40%；
Polyethylene virgin material particle 52.9%；
Antioxidant (ratio of phenolic antioxidant 1790 and irgasfos 168 is 4:1) 3%；
Antiodorant (graphene powder, porous ceramic particles 1:1 mixture) 2%, antiodorant is average grain diameter
It is 150 nanometers；
Essence 1%；
Hexafluoropropene 1%；
Talcum powder 0.1%；
(2) it is pre-mixed: weighing above-mentioned raw materials, by PCR-PE particle pre-fusion, melting temperature is 210 DEG C, after melting
PCR-PE crosses 30/80/150/80/30 mesh filter screen of multilayer；By polyethylene virgin material particle pre-fusion, melting temperature is 170 DEG C；Incited somebody to action
PCR-PE and the mixing of polyethylene virgin material after filter, are added antioxidant, antiodorant, essence, processing aid in mixed liquid；
(3) by above-mentioned mixed raw material through multi-layer extrusion machine Blown Film.
Embodiment 3
A method of film is prepared using PCR-PE, comprising the following steps:
(1) raw material of film is constituted by following mass percent:
PCR-PE particle 50%；
Polyethylene virgin material particle 42.9%；
Antioxidant (ratio of phenolic antioxidant 1790 and irgasfos 168 is 4:1) 3%；
Antiodorant (graphene powder, porous ceramic particles 1:1 mixture) 2%；Antiodorant is average grain diameter
It is 300 nanometers；
Essence 1%；
The ratio of tetrafluoroethene and hexafluoropropene is 1:1, and the total addition level of tetrafluoroethene and hexafluoropropene is 1%；Second third
Rubber EPM 0.1%；
(2) it is pre-mixed: weighing above-mentioned raw materials, by PCR-PE particle pre-fusion, melting temperature is 210 DEG C, after melting
PCR-PE is granulated again after crossing 30/80/150/80/30 mesh filter screen of multilayer；By polyethylene virgin material particle pre-fusion, melting temperature is
170℃；Filtered PCR-PE and polyethylene virgin material are mixed, antioxidant, antiodorant is added in mixed liquid, essence adds
Work auxiliary agent；
(3) by above-mentioned mixed raw material through multi-layer extrusion machine Blown Film.
Embodiment 4
A method of film is prepared using reclaiming type polyethylene, comprising the following steps:
(1) raw material of film is constituted by following mass percent:
PCR-PE particle 70%；
Polyethylene virgin material particle 19.7%；
Antioxidant (ratio of phenolic antioxidant 1790 and irgasfos 168 is 4:1) 5%；
Antiodorant (zeolite, graphene powder, porous ceramic particles 1:1:1 mixture) 2%；Antiodorant is flat
Equal partial size is 250 nanometers；
Essence 2%；Hexafluoropropene 1%, erucyl amide 0.1%；Ethylene-vinyl acetate copolymer EVA0.2%；
(2) be pre-mixed: premixing: weighing above-mentioned raw materials, and by PCR-PE particle pre-fusion, melting temperature is 210 DEG C, will melt
PCR-PE after melting crosses 30/80/150/80/30 mesh filter screen of multilayer and is granulated again；PCR-PE particle and polyethylene virgin material particle are mixed
It closes, mixing temperature is 170 DEG C, and antioxidant, antiodorant, essence and processing aid are added in mixture；
(3) by above-mentioned mixed raw material through multi-layer extrusion machine Blown Film.
Reference examples
The preparation of recycle polyethylene film is carried out using the prior art:
(1) recycle polyethylene 94.7%；It is crosslinked master batch 4.7%；Antioxidant 0.47%；Processing aid 0.13%.
The refuse plastic that the polyethylene reclaimed materials is purchased from market is granulated by classification compounding, melt blending.
It is crosslinked in master batch, EVA mass fraction is that 96%, DBPH mass fraction is 4%；
Antioxidant is the mixture of antioxidant 1010 and irgasfos 168, and ratio (mass ratio) is 3:1, and processing aid is
Atoleine.
(2) raw material in above-mentioned formula is proportionally uniformly mixed in high-speed mixer, is then added to Screw Extrusion
In machine, extruding pelletization, blending temperature is 210 DEG C.
(3) above-mentioned mixed raw material is formed a film through extruding machine extruded blown.
The appearance characteristics of the film prepared in above-described embodiment 1~4 and reference examples are shown in Table 1；
The physical property of the film prepared in Examples 1 to 4 and reference examples is shown in Table 2；
The measuring method of tensile strength: GB/T 1040.2-2006；
The measuring method of elongation at break: GB/T 1040.2-2006；
The appearance characteristics of 1 film of table
| Peculiar smell | Color difference | Crystal point | |
| Embodiment 1 | Slightly fragranced | No color differnece | Without obvious crystal point |
| Embodiment 2 | Free from extraneous odour | No color differnece | Without obvious crystal point |
| Embodiment 3 | Free from extraneous odour | No color differnece | Without obvious crystal point |
| Embodiment 4 | Free from extraneous odour | Slightly color difference | Without obvious crystal point |
| Reference examples | Slightly peculiar smell | There is color difference | There is crystal point |
The physical property of 2 film of table
With the raising of PCR-PE proportion, the tensile strength of film is promoted to decrease with elongation at break；
Using the above method preparation material free from extraneous odour or have aromatic odor, with the extension of use time, aromatic odor can gradually disappear
It loses.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of method for preparing film using PCR-PE, which comprises the following steps:
(1) raw material of film is constituted by following mass percent: PCR-PE30~70%；Polyethylene virgin material particle 20~60%；
Antioxidant 1~5%；Antiodorant 1~3%；Essence 0.5~1%；Processing aid 0.5~1%；
(2) raw material mixes: weighing above-mentioned raw materials, by PCR-PE pre-fusion, pre-fusion temperature is 150~210 DEG C, after pre-fusion
PCR-PE cross 30/80/150/80/30 double strainer after be granulated again；PCR-PE particle and polyethylene virgin material particle are mixed, mixed
Closing temperature is 150~190 DEG C, and antioxidant, antiodorant, essence and processing aid are added in mixture；
(3) by the raw material mixed in (2) through multi-layer extrusion machine Blown Film.
2. a kind of method for preparing film using PCR-PE according to claim 1, which is characterized in that the PCR-PE is
High density polyethylene (HDPE) or low density polyethylene (LDPE).
3. a kind of method for preparing film using PCR-PE according to claim 2, which is characterized in that the antioxidant packages
Include primary antioxidant Hinered phenols and aid anti-oxidants phosphorous acid esters, the ratio of primary antioxidant and pro-oxygenic agent is 4:1.
4. a kind of method for preparing film using PCR-PE according to claim 3, which is characterized in that the odor eliminating
Agent is the zeolite that average grain diameter is 100~300 nanometers or porous ceramic particles or graphene.
5. a kind of method for preparing film using PCR-PE according to claim 4, which is characterized in that the processing aid
For the mixing of one or both of talcum powder, PE wax, tetrafluoroethene, hexafluoropropene.
6. a kind of method for preparing film using PCR-PE according to claim 5, which is characterized in that the PCR- after melting
PE is granulated again by the porous mesh filter screen of multilayer 30/80/150/80/30.
7. the film that a kind of application according to claim 1 prepares PCR-PE, which is characterized in that the PCR-PE film is three
Layer blown type film.
8. a kind of application compound sheet material of PCR-PE film preparation as claimed in claim 7, which is characterized in that thin including outer layer
Film, barrier layer and internal layer membrane；Wherein outer membrane and internal layer membrane are made of hot sealing layer, sandwich layer and composite layer respectively；Wherein
The sandwich layer and composite layer of outer membrane and internal layer membrane contain PCR-PE；The barrier layer is aluminium layer or ethylene and vinyl alcohol copolymer
Object film；The outer membrane, barrier layer and internal layer membrane are compounded to form by extruded type or dry type containing the compound of PCR-PE
Matrix material.
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| CN201910018810.2A CN109824925A (en) | 2019-01-09 | 2019-01-09 | A kind of film and preparation method thereof using PCR-PE preparation |
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| CN112341686A (en) * | 2020-10-24 | 2021-02-09 | 深圳市鹏展永晟实业有限公司 | Environment-friendly cosmetic hose with high PCR content and manufacturing process thereof |
| CN112708211A (en) * | 2021-01-12 | 2021-04-27 | 南京宝利通新材料科技有限公司 | High-fluidity, low-odor and scratch-resistant polypropylene material special for automotive interior and preparation method thereof |
| CN113246569A (en) * | 2021-05-19 | 2021-08-13 | 上海紫江彩印包装有限公司 | Polyethylene label film and preparation method and application thereof |
| CN113527789A (en) * | 2021-07-07 | 2021-10-22 | 江阴爱科森博顿聚合体有限公司 | Aromatic polyethylene optical cable sheath material for vehicles and preparation method thereof |
| CN114805975A (en) * | 2022-03-30 | 2022-07-29 | 联想(北京)有限公司 | Composition of blow molding film for packaging, preparation method of blow molding film and blow molding film |
| CN116535764A (en) * | 2023-06-01 | 2023-08-04 | 安徽海铭塑业有限公司 | Low-odor plastic film material and preparation process thereof |
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| CN112341686A (en) * | 2020-10-24 | 2021-02-09 | 深圳市鹏展永晟实业有限公司 | Environment-friendly cosmetic hose with high PCR content and manufacturing process thereof |
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| CN112708211A (en) * | 2021-01-12 | 2021-04-27 | 南京宝利通新材料科技有限公司 | High-fluidity, low-odor and scratch-resistant polypropylene material special for automotive interior and preparation method thereof |
| CN113246569A (en) * | 2021-05-19 | 2021-08-13 | 上海紫江彩印包装有限公司 | Polyethylene label film and preparation method and application thereof |
| CN113527789A (en) * | 2021-07-07 | 2021-10-22 | 江阴爱科森博顿聚合体有限公司 | Aromatic polyethylene optical cable sheath material for vehicles and preparation method thereof |
| CN114805975A (en) * | 2022-03-30 | 2022-07-29 | 联想(北京)有限公司 | Composition of blow molding film for packaging, preparation method of blow molding film and blow molding film |
| CN116535764A (en) * | 2023-06-01 | 2023-08-04 | 安徽海铭塑业有限公司 | Low-odor plastic film material and preparation process thereof |
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Application publication date: 20190531 |