CN105172290A - Polyethylene film, packaging composite film, and making method of packaging composite film - Google Patents
Polyethylene film, packaging composite film, and making method of packaging composite film Download PDFInfo
- Publication number
- CN105172290A CN105172290A CN201510560211.5A CN201510560211A CN105172290A CN 105172290 A CN105172290 A CN 105172290A CN 201510560211 A CN201510560211 A CN 201510560211A CN 105172290 A CN105172290 A CN 105172290A
- Authority
- CN
- China
- Prior art keywords
- film
- layer
- polyethylene
- polyethylene film
- low density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a polyethylene film, a packaging composite film, and a making method of the packaging composite film. The polyethylene film sequentially comprises a corona layer, a middle layer and a heat sealing layer; the corona layer comprises linear low density polyethylene; the middle layer comprises linear low density polyethylene and olefin resin, and the olefin resin comprises a cycloolefin copolymer and/or polybutylene resin; and raw materials of the heat sealing layer comprise low density polyethylene and metallocene linear low density polyethylene. The linear low density polyethylene and the olefin resin in the polyethylene film are microscopically incompatible and form a unidirectional island structure to make the polyethylene film and the packaging composite film made through using the polyethylene film respectively have good linear tearability. Experiment results show that the tearing width of the polyethylene film is 18.5-19.1mm at an unsealing speed of 1000+/-50 ~ 1000+/-10 mm/min with the reference of 20mm width; and the tearing width of the packaging composite film is 18.5-19.6mm at an unsealing speed of 1000+/-50 ~ 1000+/-10 mm/min with the reference of 20mm width.
Description
Technical field
The present invention relates to field of packaging material, particularly relate to a kind of polyethylene film, packaging composite film and preparation method thereof.
Background technology
Along with the lifting day by day of packing technique, people no longer content just to packaging for foodstuff and simply protect food, extend the necessary functions such as effective period of food quality, and propose more and more higher requirement to the ease for use in the actual use procedure of packaging for foodstuff.Wherein, the tearability of packaging is one of people's utility function comparing concern, and therefore, novel composite membrane of easily tearing just is given birth at once, and is subject to extensive concern gradually.
Ideal, easily to tear the functional composite membrane into target, need to possess following several feature: (1), when consumer opens food pack, should have more satisfactory cracking effect needing the place of cracking; (2) under the prerequisite guaranteeing in-built food security, tear propogation power should be little as much as possible, is convenient to tear simultaneously; (3) effect of paper tear mouth should be possessed during tearing port expansion, and tear line should close to straight line.
Polyethylene film in packaging film is called for short PE film, and the thermoplastic polyester obtained by vinyl polymerization, polyethylene film is colourless, tasteless, nontoxic, and be translucent shape.Polyethylene film has excellent dielectricity and moisture resistivity, can keep flexibility and chemical stability when low temperature.Common polyethylene film, comprises skin, middle level and internal layer, and described internal layer is ionomeric polymer layer, and outer and middle level is polyethylene layer, and described skin, middle level are connected with internal layer coextru-lamination.Common polyethylene film has good chemical resistance, grease resistance, but its smooth tearing is poor.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of polyethylene film, packaging composite film and preparation method thereof, polyethylene film provided by the invention has good straight line tearability energy.
The invention provides a kind of polyethylene film, comprise corona layer, intermediate layer and hot sealing layer successively;
The raw material packet of described corona layer draws together LLDPE;
The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin;
The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.
Preferably, the percentage elongation of described olefine kind resin is lower than 100%.
Preferably, the mass ratio of described intermediate layer neutral line low density polyethylene (LDPE) and olefine kind resin is 4.5 ~ 5.5:1.5 ~ 5.5.
Preferably, the melt index of described cyclic olefine copolymer is 1.8 ~ 2.0g/10min.
Preferably, in described hot sealing layer, the mass ratio of low density polyethylene (LDPE) and metallocene linear-low density polyethylene is 1.5 ~ 2.5:1.
Preferably, the thickness of described polyethylene film is 30 μm ~ 90 μm.
Preferably, the raw material of described hot sealing layer also comprises slipping agent and/or opening agent.
The invention provides a kind of packaging composite film, comprise the polyethylene film described in polypropylene screen, aluminium foil layer, polyester film and technique scheme successively;
Described polyester film contacts with the corona layer of polyethylene film.
Preferably, the Thickness Ratio of described polypropylene screen, aluminium foil layer, polyester film and polyethylene film is (18 ~ 20): (7 ~ 9): (12 ~ 15): (30 ~ 90).
The invention provides the preparation method of packaging composite film described in a kind of technique scheme, comprise the following steps:
By polypropylene screen, aluminium foil layer and polyester film successively compound, obtain composite membrane intermediate;
By the polyethylene film compound described in described composite membrane intermediate and technique scheme, obtain packaging composite film;
Described polyester film contacts with the corona layer of polyethylene film.
The invention provides a kind of polyethylene film, comprise corona layer, intermediate layer and hot sealing layer successively; The raw material packet of described corona layer draws together LLDPE; The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin; The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.LLDPE in polyethylene film provided by the invention is incompatible with olefine kind resin microcosmic, and forms unidirectional " island " structure, makes the packaging composite film of polyethylene film and preparation thereof all have good straight line tearability.Experimental result shows: be 1000 ± 50mm/min ~ 1000 ± 10mm/min in Kaifeng speed, and during with 20mm width for benchmark, the width of tearing of polyethylene film is 18.5 ~ 19.1mm; The width torn of packaging composite film is 18.5 ~ 19.6mm.
Accompanying drawing explanation
The production technological process of the packaging composite film that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the assay maps that the present invention tests smooth tearing;
Fig. 3 is the schematic diagram that sample of the present invention stretches;
Fig. 4 is the schematic diagram that sample of the present invention is torn;
Fig. 5 be the polyethylene film prepared of common PE film and the embodiment of the present invention 1 tear result schematic diagram.
Detailed description of the invention
The invention provides a kind of polyethylene film, comprise corona layer, intermediate layer and hot sealing layer successively;
The raw material packet of described corona layer draws together LLDPE;
The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin;
The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.
Polyethylene film provided by the invention has good straight line tearability.
Polyethylene film provided by the invention comprises corona layer, and the raw material packet of described corona layer draws together LLDPE (LLDPE).In the present invention, the LLDPE in described corona layer preferably includes the LLDPE that the trade mark is 7042.In the present invention, the raw material of described corona layer preferably also comprises low density polyethylene (LDPE); In an embodiment, the low density polyethylene (LDPE) in described corona layer is preferably the low density polyethylene (LDPE) that the trade mark is 2012TN00.In a particular embodiment of the present invention, in described corona layer, the mass ratio of the trade mark to be the low density polyethylene (LDPE) trade mark of 2012TN00 the be LLDPE of 7042 is preferably 0.8 ~ 1.2:2, is more preferably 1:2.In the present invention, the thickness of described corona layer is preferably 10 ~ 30 μm.In the present invention, described corona layer is used for compound.In the present invention, not containing the small-molecule substance that can separate out in the raw material of described corona layer, make the surface tension value after film corona can keep lastingly, be also conducive to the raising of compound peeling force simultaneously.
Polyethylene film provided by the invention comprises intermediate layer, and the raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin.In the present invention, the raw material LLDPE in described intermediate layer and the mass ratio of olefine kind resin are preferably 4.5 ~ 5.5:1.5 ~ 5.5.In the present invention, the percentage elongation of described olefine kind resin preferably lower than 100%, more preferably less than 50%.In the present invention, described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin, is preferably cyclic olefine copolymer; The melt index of described cyclic olefine copolymer is preferably 1.8 ~ 2.0g/10min (190 DEG C, 2.16kg); The density of described cyclic olefine copolymer is preferably 1.02g/cm
3; Described cyclic olefine copolymer preferably has formula I structure:
In formula I, 4≤x≤7,3≤y≤6.
In the present invention, the source of the present invention to described polybutene hydrocarbon resin does not have special restriction, adopts polybutene resin well known to those skilled in the art, as adopted its commercial goods.In the present invention, the melt index of described polybutene resin is preferably 0.5 ~ 2.0g/10min; The percentage elongation of described polybutene resin is preferably 100% ~ 300%.
In the present invention, the thickness in described intermediate layer is preferably 10 ~ 30 μm.In a particular embodiment of the present invention, the raw material in described intermediate layer preferably include the trade mark be 7042 LLDPE and the trade mark be the cyclic olefine copolymer of COC8007F-04; The LLDPE of described 7042 and the trade mark are that the mass ratio of the cyclic olefine copolymer of COC8007F-04 is preferably 4.5 ~ 5.5:2, are more preferably 5:2.In the present invention, described intermediate layer provides the structure of smooth tearing, and intermediate layer is the articulamentum of corona layer and hot sealing layer, and this intermediate layer has smooth tearing effect, just two top layers (hot sealing layer and corona layer) related being in line can be torn.
Polyethylene film provided by the invention comprises hot sealing layer, and the raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene (mLLDPE).In the present invention, the thickness of described hot sealing layer is preferably 10 ~ 30 μm.In the present invention, in described hot sealing layer, the mass ratio of low density polyethylene (LDPE) and metallocene linear-low density polyethylene is preferably 1.5 ~ 2.5:1, is more preferably 2:1; Described low density polyethylene (LDPE) is preferably the low density polyethylene (LDPE) that the trade mark is 100AC; It is SP1520 metallocene linear-low density polyethylene that described metallocene linear-low density polyethylene is preferably the trade mark.In the present invention, the raw material of described hot sealing layer when lower heat-sealing temperature or higher packaging speed, can obtain the effect of higher heat seal strength and antipollution heat-sealing; Meanwhile, low density polyethylene (LDPE) add the processability also improving metallocene linear-low density polyethylene, hot sealing layer be used for involution packaging.
In the present invention, the raw material of described hot sealing layer preferably also comprises slipping agent and/or opening agent.The kind of the present invention to described slipping agent and opening agent does not have special restriction, adopts slipping agent well known to those skilled in the art and opening agent, as adopted its commercial goods.In the present invention, described slipping agent and opening agent all can reduce the coefficient of friction of polyethylene film, make composite film packaging walk machine good.In the present invention, the preferred trade mark of described slipping agent is the slipping agent of 10090-K.In the present invention, described opening agent is divided into organic and mineral-type; Organic opening agent mainly comprises oleamide; Mineral-type opening agent is mainly based on silica.Concrete, the preferred trade mark of described opening agent is the opening agent of AB-20LD and the trade mark is the opening agent of 100991-K.The present invention preferably adopts slipping agent and opening agent simultaneously, best results.In the present invention, the Functionality, quality and appealing design of described slipping agent elects 0.005 ~ 0.008:1 of low density polyethylene (LDPE) and metallocene linear-low density polyethylene gross mass in hot sealing layer as; The Functionality, quality and appealing design of described opening agent elects 0.008 ~ 0.013:1 of low density polyethylene (LDPE) and metallocene linear-low density polyethylene gross mass in hot sealing layer as.
In the present invention, described polyethylene film is preferably by the raw material Coextrusion Blow Moulding of corona layer described in technique scheme, intermediate layer and hot sealing layer.Corona layer raw material, intermediate layer raw material and hot sealing layer raw material preferably add in three barrels of extruder well known to those skilled in the art by the present invention respectively, and carry out three sections of heating to each barrel.It is 120 DEG C ~ 130 DEG C that the present invention preferably arranges each barrel one section of heating-up temperature; Two sections of heating-up temperatures are 130 DEG C ~ 140 DEG C; Three sections of heating-up temperatures are 140 DEG C ~ 150 DEG C; Arranging die head temperature is 140 DEG C ~ 160 DEG C; Control melt extrusion pressure and be less than 45MPa.Raw material in above-mentioned three barrels is through extruder melting and form pipe, compressed air is gone out from extruder die head center after being stretched by pipe, pipe is blown into blister film, simultaneously by blister film through vane cooling air cooling and shaping, thus the obtained polyethylene film comprising corona layer, intermediate layer and hot sealing layer successively.
In the present invention, the blow-up ratio of described Coextrusion Blow Moulding is preferably less than 2, is more preferably 1.2 ~ 2.Blow-up ratio refers to the number ratios after film inflation and between non-inflation, in actual production, if laterally stretched to film, nanometer stretching will produce certain orientation to plastics, and blow-up ratio will increase, thus film is made laterally to obtain the lifting in intensity.The present invention controls the blow-up ratio of co-polymer membrane well in processing technology, strengthen the difference of mechanical property in length and breadth of co-polymer membrane, obviously improve percentage elongation, the composite membrane of co-polymer membrane is when tearing, and the mechanical property of this species diversity just can give packaging composite film better smooth tearing.Therefore, polyethylene film provided by the invention has good straight line tearability energy.
In the present invention, the thickness of described corona layer, intermediate layer and hot sealing layer is all preferably 10 ~ 30 μm; The thickness of obtained polyethylene film is preferably 30 ~ 90 μm.Concrete, the Thickness Ratio of described corona layer, intermediate layer and hot sealing layer is preferably 1:(1 ~ 2): (1 ~ 2), as be 1:2:1, for equipment processing, this designs the most rational three-decker to distribute; Also can be 1:1:2, need the performance of hot sealing layer as more outstanding in antipollution heat sealability; Can also be 1:2:2, need the performance of hot sealing layer and intermediate layer resin more outstanding; Be more preferably 1:1:1, the performance of three-layer resin is even.
Present invention also offers a kind of packaging composite film prepared by above-mentioned polyethylene film, it comprises the polyethylene film described in polypropylene screen, aluminium foil layer, polyester film and technique scheme successively;
Described polyester film contacts with the corona layer of described polyethylene film.
Packaging composite film provided by the invention uses the polypropylene screen with smooth tearing guiding to guide to produce smooth tearing effect, and firm composite polyester film and aluminium foil intercept in centre, internal layer more firmly compound easily to tear and pollution resistance is good, the polyethylene film of high heat-sealing strength, therefore, the packaging composite film that described packaging composite film is a kind of high-barrier, energy smooth tearing is opened, is beneficial to application.
In the present invention, the Thickness Ratio of described polypropylene screen, aluminium foil layer, polyester film and polyethylene film is preferably (18 ~ 20): (7 ~ 9): (12 ~ 15): (30 ~ 90).。
In the present invention, described packaging composite film comprises polypropylene screen, and it is the outermost layer of packaging composite film, is preferably the polypropylene print film (BOPP print film) of Biaxially oriented polypropylene (BOPP) after printing.In the present invention, described polypropylene screen is outer membrane, has smooth tearing, can guide whole composite membrane straight line tearing notch.In the present invention, the thickness of described polypropylene screen is preferably 18 ~ 20 μm.
In the present invention, described packaging composite film comprises aluminium foil (AL) layer.Described aluminium foil layer plays the effect of obstruct, and aluminium foil has impermeability to light, air, water and other majority of gas and liquid, and can high temperature sterilization, can keep the local flavor of food preferably, and can preserve food for a long time.In the present invention, the thickness of described aluminium foil layer is preferably 7 ~ 9 μm.The material aluminium foil of the present invention to aluminium foil layer does not have special restriction, adopts aluminium foil well known to those skilled in the art.
In the present invention, described packaging composite film comprises polyester film (PET film).Described polyester film can protect the resistance to jackknifing of aluminium foil.In the present invention, the thickness of described polyester film is preferably 12 ~ 15 μm.The source of the present invention to described polyester film does not have special restriction, adopts polyester film well known to those skilled in the art, as adopted its commercial goods.Concrete, described polyester film is preferably polyethylene terephthalate thin film.
In the present invention; described packaging composite film comprises polyethylene (PE) film mentioned above; it is as the inner layer film of composite membrane; not only there is good antipollution heat-sealing effect and high heat-sealing strength; good antipollution, heat-sealing and sealing protection performance is had to the pack content of liquid or powder; and there is good straight line tearability energy, and then packaging composite film energy smooth tearing is opened, make content convenient to remove.
When compound peeling force is inadequate, when composite membrane is torn, there will be layering, if polyethylene film layering, will after-drawing be produced, thus cause the smooth tearing of packaging composite film significantly to reduce.Therefore, as preferably, the compound peeling force of described polyester film and polyethylene film ensures at more than 3N/15mm.
Present invention also offers the preparation method of the packaging composite film described in a kind of technique scheme, comprise the following steps:
By polypropylene screen, aluminium foil layer and polyester film successively compound, obtain composite membrane intermediate;
By described composite membrane intermediate and polyethylene film compound, obtain packaging composite film;
Described polyester film contacts with the corona layer of polyethylene film.
See the production technological process of the packaging composite film that Fig. 1, Fig. 1 provide for the embodiment of the present invention.
The present invention, by polypropylene screen, aluminium foil layer and polyester film compound, obtains composite membrane intermediate.In the present invention, the mode of described compound is preferably dry type compound.Polypropylene screen and aluminium foil layer are preferably carried out the first compound by the present invention, obtain polypropylene screen-aluminium foil layer composite membrane; Again by described polypropylene screen-aluminium foil layer composite membrane and polyester film second compound, obtain composite membrane intermediate.
In the embodiment of the present application, described BOPP print film is obtained through printing by BOPP; Described BOPP can adopt monoaxial stretching method to produce, and after making film forming, strand aligns, thus produces directed smooth tearing performance, as the BOPP film that Japanese two chemical companies of village can be used to provide.
The present invention preferably adopts adhesive to carry out the dry type compound of polypropylene screen and aluminium foil layer and the compound of polypropylene screen-aluminium foil layer composite membrane and polyester film.In order to distinguish adhesive described in following technical proposals, by compound called after first adhesive of the dry type compound and polypropylene screen-aluminium foil layer composite membrane and polyester film of carrying out polypropylene screen and aluminium foil layer.The adhesive that dry type compound working procedure adopts needs to have excellent resistance to chemical corrosion, to ensure that each layer has higher peel strength for a long time.Concrete, adhesive and the ethyl ester of the trade mark that in the embodiment of the present invention, the first adhesive preferably includes Gao Meng company and provides to be the adhesive of SY-03A and the trade mark be SY-03B; The mass ratio of three is preferably 20:4.8:30.The viscosity of the first adhesive adopted is preferably 3# cup 17 ~ 19s; The applicator roll being coated with the first adhesive is preferably 100 line 70 object mesh rollers; Spread is preferably 2.5g/m
2~ 3g/m
2.
Dry type compound working procedure is technological means well known to those skilled in the art, in the present invention, include in described first compound and the second compound and loosen tension force (being called that first time loosens and second time is loosened), slaking, frictioning, moulding, laminating, preheating, drying and rolling for twice.Concrete, the board speed of a motor vehicle of described first compound is preferably 100m/min ~ 120m/min; The tension force that first time loosens is preferably 80 ~ 90N; The tension force that second time is loosened is preferably 50 ~ 60N; The temperature of described slaking is preferably 45 DEG C ~ 50 DEG C, is more preferably 48 DEG C; The time of described slaking is preferably 30h ~ 36h.Frictioning adopts scraper to carry out, and the pressure of scraper can manual adjustments.During moulding, the pressure of pressure roller or Non-follow control is preferably 0.3 ± 0.1MPa; The pressure of laminating is preferably 0.4 ± 0.1MPa; The temperature of laminating is preferably 55 ~ 65 DEG C.The temperature of described preheating is preferably 30 DEG C ~ 40 DEG C; The temperature of described drying is preferably 55 DEG C ~ 75 DEG C; The tension force of dry baking tunnel is preferably 70N; The pressure of described rolling is preferably 95 ~ 105N.
In the second compound, the board speed of a motor vehicle is preferably 100m/min ~ 120m/min; The tension force that first time loosens is preferably 80 ~ 90N; The tension force that second time is loosened is preferably 50 ~ 60N.The temperature of described slaking is preferably 45 DEG C ~ 50 DEG C, is more preferably 48 DEG C; The time of described slaking is preferably 30h ~ 36h.Frictioning adopts scraper to carry out, and the pressure of scraper can manual adjustments.During moulding, the pressure of pressure roller or Non-follow control is preferably 0.3 ± 0.1MPa; The pressure of laminating is preferably 0.4 ± 0.1MPa; The temperature of laminating is preferably 55 ~ 65 DEG C.The temperature of described preheating is preferably 30 DEG C ~ 40 DEG C.The temperature of described drying is preferably 55 DEG C ~ 75 DEG C; The tension force of dry baking tunnel is preferably 70N; The pressure of described rolling is preferably 95 ~ 105N.
After obtaining composite membrane intermediate, the present invention by described composite membrane intermediate and with polyethylene film the 3rd compound, obtain packaging composite film; Described polyester film contacts with the corona layer of polyethylene film.The present invention preferably adopts the second adhesive to carry out the 3rd compound.In the present invention, adhesive and the ethyl ester of the trade mark that described second adhesive preferably includes Gao Meng company and provides to be the adhesive of SY-03A and the trade mark be SY-03B; The mass ratio of three is preferably 20:4.8:32.The viscosity of described second adhesive is preferably 3# cup 16 ~ 18s; Spread is preferably 3g/m
2~ 3.5g/m
2.
In the present invention, described 3rd compound also comprises and loosens tension force (being called that first time loosens and second time is loosened), slaking, frictioning, moulding, laminating, preheating, drying and rolling for twice.Concrete, at the 3rd compound tense, the board speed of a motor vehicle is preferably 100m/min ~ 120m/min; The tension force that first time loosens is preferably 90 ~ 100N; The tension force that second time is loosened is preferably 40 ~ 50N.The temperature of described slaking is preferably 45 DEG C ~ 50 DEG C, is more preferably 48 DEG C; The time of described slaking is preferably 30h ~ 36h.Frictioning adopts scraper to carry out, and the pressure of scraper can manual adjustments.During moulding, the pressure of pressure roller or Non-follow control is preferably 0.3 ± 0.1MPa.The pressure of laminating is preferably 0.4 ± 0.1MPa; The temperature of laminating is preferably 55 ~ 65 DEG C.The temperature of described preheating is preferably 30 DEG C ~ 40 DEG C.The temperature of described drying is preferably 80 DEG C ~ 90 DEG C; The tension force of dry baking tunnel is preferably 150N.The pressure of described rolling is preferably 95 ~ 105N.
The present invention carries out the test of smooth tearing to polyethylene film and packaging composite film, and method of testing is as follows:
Fig. 2 is the assay maps that the present invention tests smooth tearing, gets the rectangular sample film shown in Fig. 2, cuts 2 otch, this section is cut into three parts in sample one end.With the two panels of XLW-100E type micro-control electronic tension tester (Materials Testing Instrument factory provides by Guangzhou) backward haulage sample both sides and between the end of a slice, draw the two panels of both sides, it is made to separate with middle a slice, simulate the speed in people Kaifeng by the speed pulled open, be generally set as 1000 ± 50mm/min; Sample stretches as shown in Figure 3, and Fig. 3 is the schematic diagram that sample of the present invention stretches.After stretching is torn, measure the effect numerical value of the sample film as shown in Figure 4 torn apart, Fig. 4 is the schematic diagram that sample of the present invention is torn.If film is separated into three rectangles, so the effect of its smooth tearing is best; If Splitting is centre slowly become rectangular.Attenuate, at this moment measure and leave width rectangular between beginning breach 50mm place, using this width value as the index of smooth tearing.Result shows: polyethylene film provided by the invention and packaging composite film have good straight line tearability energy.
The Performance Detection index of packaging composite film provided by the invention is shown in Table 1, and table 1 is the Performance Detection index of packaging composite film provided by the invention:
The Performance Detection index of table 1 packaging composite film provided by the invention
The invention provides a kind of polyethylene film, comprise corona layer, intermediate layer and hot sealing layer successively; The raw material packet of described corona layer draws together LLDPE; The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin; The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.LLDPE in polyethylene film provided by the invention is incompatible with olefine kind resin microcosmic, and forms unidirectional " island " structure, makes the packaging composite film of polyethylene film and preparation thereof all have good straight line tearability.Experimental result shows: the present invention is 1000 ± 50mm/min ~ 1000 ± 10mm/min in Kaifeng speed, and during with 20mm width for benchmark, the width that polyethylene film is torn is 18.5 ~ 19.1mm; The width torn of packaging composite film is 18.5 ~ 19.3mm.
In order to further illustrate the present invention, below in conjunction with embodiment, a kind of polyethylene film provided by the invention, packaging composite film and preparation method thereof being described in detail, but they can not being interpreted as limiting the scope of the present invention.
Embodiment 1
In three barrels of extruder machine, add the raw material of the raw material of corona layer, the raw material in intermediate layer and hot sealing layer respectively, each composition of raw materials is as follows:
Corona layer: 50kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 LLDPE LLDPE and the trade mark that dispatches from the factory of 25kg Qilu Petrochemical be the low density polyethylene of 2102TN00;
Intermediate layer: 50kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 LLDPE and the 20kg trade mark be the cyclic olefine copolymer TopasAdvancedPolymers company of COC8007F-04,
Above-mentioned cyclic olefine copolymer has following structure:
Hot sealing layer: metallocene linear-low density polyethylene mLLDPE, 0.5kg trade mark that the 50kg trade mark is the low density polyethylene of 100AC, the 25kg trade mark is SP1520 is the slipping agent of 10090-K and the 0.8kg trade mark is the opening agent of AB-20LD.
Arranging each barrel one section of heating-up temperature is 120 DEG C, and two sections of heating-up temperatures are 140 DEG C, and three sections of heating-up temperatures are 145 DEG C, and the temperature arranging die head is 150 DEG C, controls melt extrusion pressure and is less than 45MPa; Raw particles in above-mentioned three barrels is through extruder melting and form pipe, go out compressed air from extruder die head center after being stretched by pipe, pipe blown film is blown into blister film, and blow-up ratio is 1.8, simultaneously by blister film through vane cooling air cooling and shaping, obtained polyethylene film;
Described polyethylene film comprises corona layer, intermediate layer and hot sealing layer successively, and the thickness of corona layer is 15 μm, and the thickness in intermediate layer is 20 μm, and the thickness of hot sealing layer is 30 μm.
The preparation process of common PE film: the raw material adding the raw material of corona layer of common PE film, the raw material in intermediate layer and hot sealing layer in three barrels of extruder machine respectively, each composition of raw materials is as follows:
Corona layer: 50kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 LLDPE LLDPE and the trade mark that dispatches from the factory of 25kg Qilu Petrochemical be the low density polyethylene of 2102TN00;
It is the LLDPE of 7042 that intermediate layer: 50kg raises the trade mark that sub-petrochemical industry dispatches from the factory; Hot sealing layer: metallocene linear-low density polyethylene mLLDPE, 0.5kg trade mark that the 50kg trade mark is the low density polyethylene of 100AC, the 25kg trade mark is SP1520 is the slipping agent of 10090-K and the 0.8kg trade mark is the opening agent of AB-20LD.
The preparation process of common PE film prepares polyethylene film with above-described embodiment 1, and obtained common PE film comprises corona layer, intermediate layer and hot sealing layer successively, and the thickness of corona layer is 15 μm, and the thickness in intermediate layer is 20 μm, and the thickness of hot sealing layer is 30 μm.
The present invention carries out lancinating test to polyethylene film prepared by common material PE film and embodiment 1, and it tears result schematic diagram as shown in Figure 5, Fig. 5 be the polyethylene film prepared of common PE film and the embodiment of the present invention 1 tear result schematic diagram.The smooth tearing of the present invention to polyethylene film prepared by common material PE film and embodiment 1 is tested, and in table 2, table 2 is the smooth tearing test data of polyethylene film prepared by common PE film and embodiment 1 ~ 3:
The smooth tearing test data (unit mm) of polyethylene film prepared by table 2 common PE film and embodiment 1 ~ 3
As can be seen from Table 2, the polyethylene film that prepared by the present invention has good straight line tearability energy.
Embodiment 2
In three barrels of extruder machine, add the raw material of the raw material of corona layer, the raw material in intermediate layer and hot sealing layer respectively, each composition of raw materials is as follows:
Corona layer: 55kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 LLDPE LLDPE and the trade mark that dispatches from the factory of 20kg Qilu Petrochemical be the low density polyethylene of 2102TN00;
Intermediate layer: 45kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 the trade mark that dispatches from the factory of LLDPE and 25kgTopasAdvancedPolymers company be the cyclic olefine copolymer of COC8007F-04;
Above-mentioned cyclic olefine copolymer has following structure:
Hot sealing layer: metallocene linear-low density polyethylene mLLDPE, 0.4kg trade mark that the 55kg trade mark is the low density polyethylene of 100AC, the 20kg trade mark is SP1520 is the slipping agent of 10090-K and the 1.0kg trade mark is the opening agent of AB-20LD.
Arranging each barrel one section of heating-up temperature is 130 DEG C, and two sections of heating-up temperatures are 135 DEG C, and three sections of heating-up temperatures are 140 DEG C, and the temperature arranging die head is 155 DEG C, controls melt extrusion pressure and is less than 45MPa; Raw particles in above-mentioned three barrels is through extruder melting and form pipe, go out compressed air from extruder die head center after being stretched by pipe, pipe blown film is blown into blister film, and blow-up ratio is 1.5, simultaneously by blister film through vane cooling air cooling and shaping, obtained polyethylene film;
Described polyethylene film comprises corona layer, intermediate layer and hot sealing layer successively, and the thickness of corona layer is 10 μm, and the thickness in intermediate layer is 30 μm, and the thickness of hot sealing layer is 20 μm.The present invention carries out performance test to polyethylene film prepared by embodiment 2, and test result is in table 2; Show that it has good straight line tearability energy.
Embodiment 3
In three barrels of extruder machine, add the raw material of the raw material of corona layer, the raw material in intermediate layer and hot sealing layer respectively, each composition of raw materials is as follows:
Corona layer: 45kg raise the trade mark that sub-petrochemical industry dispatches from the factory be 7042 LLDPE LLDPE and the trade mark that dispatches from the factory of 15kg Qilu Petrochemical be the low density polyethylene of 2102TN00;
Intermediate layer: 55kg raises LLDPE and the 15kg polybutene resin (buying in TopasAdvancedPolymers company) that the trade mark that sub-petrochemical industry dispatches from the factory is 7042;
Hot sealing layer: metallocene linear-low density polyethylene mLLDPE, 0.6kg trade mark that the 50kg trade mark is the low density polyethylene of 100AC, the 15kg trade mark is SP1520 is the slipping agent of 10090-K and the 0.9kg trade mark is the opening agent of AB-20LD.
Arranging each barrel one section of heating-up temperature is 125 DEG C, and two sections of heating-up temperatures are 130 DEG C, and three sections of heating-up temperatures are 150 DEG C, and the temperature arranging die head is 160 DEG C, controls melt extrusion pressure and is less than 45MPa; Raw particles in above-mentioned three barrels is through extruder melting and form pipe, go out compressed air from extruder die head center after being stretched by pipe, pipe blown film is blown into blister film, and blow-up ratio is 1.2, simultaneously by blister film through vane cooling air cooling and shaping, obtained polyethylene film;
Described polyethylene film comprises corona layer, intermediate layer and hot sealing layer successively, and the thickness of corona layer is 30 μm, and the thickness in intermediate layer is 30 μm, and the thickness of hot sealing layer is 30 μm.The present invention carries out performance test to polyethylene film prepared by embodiment 2, and test result is in table 2; Show that it has good straight line tearability energy.
Embodiment 4
Smooth for ingredient requirement, without mass defects such as brilliant point, water ripples, color lump and worm corpse, the BOPP film that BOPP print film is provided by Japanese two chemical companies of village is obtained through printing; Aluminium foil is provided by Zhong Ji company; The polyethylene terephthalate thin film of polyester film for being provided by national practice of forms of behavior Su Ye company;
Adopt adhesive, BOPP print film and aluminium foil AL are carried out the first dry type compound, obtains BOPP/AL composite membrane; Wherein, adhesive and the ethyl ester of the trade mark that adhesive comprises Gao Meng company and provides to be the adhesive of SY-03A and the trade mark be SY-03B; The mass ratio of three is 20:4.8:30; The viscosity of adhesive is 3# cup 17 ~ 19s; The applicator roll of coating adhesive is preferably 100 line 70 object mesh rollers; Spread is preferably 2.8g/m
2; The concrete technology parameter of the first dry type compound is in table 2, and table 2 is the concrete technology parameter of the embodiment of the present invention 3 dry type compound;
After obtaining BOPP/AL composite membrane, BOPP/AL composite membrane will be obtained and PET film adopts adhesive to carry out the second dry type compound, obtain BOPP/AL/PET composite membrane, i.e. composite membrane intermediate; Wherein, adhesive and the ethyl ester of the trade mark that adhesive comprises Gao Meng company and provides to be the adhesive of SY-03A and the trade mark be SY-03B; The mass ratio of three is 20:4.8:30; The viscosity of adhesive is 3# cup 17 ~ 19s; The applicator roll being coated with the first adhesive is 100 line 70 object mesh rollers; Spread is 2.5g/m
2; The concrete technology parameter of the second dry type compound is in table 2;
Adhesive is adopted to carry out the 3rd dry type compound polyethylene film prepared by BOPP/AL/PET composite membrane and embodiment 1 ~ 3, obtain packaging composite film, wherein, adhesive and the ethyl ester of the trade mark that adhesive comprises Gao Meng company and provides to be the adhesive of SY-03A and the trade mark be SY-03B; The mass ratio of three is 20:4.8:32; The viscosity of adhesive is 3# cup 16 ~ 18s; Spread is preferably 3.5g/m
2; The concrete technology parameter of the 3rd dry type compound is in table 3;
The concrete technology parameter of table 3 embodiment of the present invention 4 dry type compound
| Technological parameter | First dry type compound | Second dry type compound | 3rd dry type compound |
| The speed of a motor vehicle | 120 | 110 | 120 |
| One puts tension force/N | 80 | 90 | 100 |
| Two put tension force/N | 60 | 50 | 40 |
| Drying tunnel tension force/N | 70 | 70 | 150 |
| Winding tension/N | 100 | 98 | 100 |
| Curing temperature/DEG C | 48 | 45 | 48 |
| Curing time/h | 30 | 30 | 36 |
| Scraper pressure | Manual adjustments | Manual adjustments | Manual adjustments |
| Moulding pressure/N | 0.3 | 0.35 | 0.3 |
| Platen pressure/N | 0.3 or manual adjustments | 0.4 or manual adjustments | 0.4 |
| Laminate pressure/N | 0.4 | 0.45 | 0.5 |
| Binding temperature/DEG C | 60 | 65 | 55 |
| Preheat temperature/DEG C | 35 | 40 | 40 |
| Baking temperature/DEG C | 70 | 65 | 85 |
The present embodiment is according to the method described in technique scheme, packaging composite film prepared by common material composite membrane (BOPP film that national practice of forms of behavior company provides) and the present embodiment is carried out the test of straight line tearability, the results are shown in Table 4, table 4 is the smooth tearing the performance test results (unit: mm) of packaging composite film prepared by existing packaging composite film and the present embodiment 1 ~ 3:
The smooth tearing the performance test results (unit: mm) of packaging composite film prepared by the existing packaging composite film of table 4 and the present embodiment 1 ~ 3
As can be seen from Table 4, the embodiment of the present invention 1 ~ 3 prepare packaging composite film be a kind of can smooth tearing open packaging composite film, be beneficial to application.
As seen from the above embodiment, the invention provides a kind of polyethylene film, comprise corona layer, intermediate layer and hot sealing layer successively; The raw material packet of described corona layer draws together LLDPE; The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin; The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.LLDPE in polyethylene film provided by the invention is incompatible with olefine kind resin microcosmic, and forms unidirectional " island " structure, makes the packaging composite film of polyethylene film and preparation thereof all have good straight line tearability.Experimental result shows: the present invention is 1000 ± 50mm/min ~ 1000 ± 10mm/min in Kaifeng speed, and during with 20mm width for benchmark, the width of tearing of polyethylene film is 18.5 ~ 19.1mm; The width of tearing of packaging composite film is 18.5 ~ 19.6mm.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a polyethylene film, comprises corona layer, intermediate layer and hot sealing layer successively;
The raw material packet of described corona layer draws together LLDPE;
The raw material packet in described intermediate layer draws together LLDPE and olefine kind resin, and described olefine kind resin comprises cyclic olefine copolymer and/or polybutene resin;
The raw material of described hot sealing layer comprises low density polyethylene (LDPE) and metallocene linear-low density polyethylene.
2. polyethylene film according to claim 1, is characterized in that, the percentage elongation of the olefine kind resin in described intermediate layer is lower than 100%.
3. polyethylene film according to claim 1, is characterized in that, the mass ratio of described intermediate layer neutral line low density polyethylene (LDPE) and olefine kind resin is 4.5 ~ 5.5:1.5 ~ 5.5.
4. polyethylene film according to claim 1, is characterized in that, the melt index of described cyclic olefine copolymer is 1.8 ~ 2.0g/10min.
5. polyethylene film according to claim 1, is characterized in that, in described hot sealing layer, the mass ratio of low density polyethylene (LDPE) and metallocene linear-low density polyethylene is 1.5 ~ 2.5:1.
6. polyethylene film according to claim 1, is characterized in that, the thickness of described polyethylene film is 30 μm ~ 90 μm.
7. polyethylene film according to claim 1, is characterized in that, the raw material of described hot sealing layer also comprises slipping agent and/or opening agent.
8. a packaging composite film, comprises polypropylene screen, aluminium foil layer, polyester film and the polyethylene film described in claim 1 ~ 7 any one successively;
Described polyester film contacts with the corona layer of polyethylene film.
9. packaging composite film according to claim 8, it is characterized in that, the Thickness Ratio of described polypropylene screen, aluminium foil layer, polyester film and polyethylene film is (18 ~ 20): (7 ~ 9): (12 ~ 15): (30 ~ 90).
10. a preparation method for packaging composite film described in claim 8 ~ 9 any one, comprises the following steps:
By polypropylene screen, aluminium foil layer and polyester film successively compound, obtain composite membrane intermediate;
By described composite membrane intermediate and polyethylene film compound, obtain packaging composite film;
Described polyester film contacts with the corona layer of polyethylene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560211.5A CN105172290A (en) | 2015-09-06 | 2015-09-06 | Polyethylene film, packaging composite film, and making method of packaging composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510560211.5A CN105172290A (en) | 2015-09-06 | 2015-09-06 | Polyethylene film, packaging composite film, and making method of packaging composite film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105172290A true CN105172290A (en) | 2015-12-23 |
Family
ID=54894933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510560211.5A Pending CN105172290A (en) | 2015-09-06 | 2015-09-06 | Polyethylene film, packaging composite film, and making method of packaging composite film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105172290A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313414A (en) * | 2015-10-22 | 2016-02-10 | 安徽双津实业有限公司 | Linear unstretched polyethylene film easy to tear |
| CN108673989A (en) * | 2018-05-21 | 2018-10-19 | 黄山永新股份有限公司 | A kind of high-barrier transparency film and its production method suitable for High-Speed Automatic packaging |
| CN109263200A (en) * | 2018-09-30 | 2019-01-25 | 黄山永新股份有限公司 | A kind of two-way linear easily tears polyethylene film and its production technology |
| CN109291591A (en) * | 2018-10-08 | 2019-02-01 | 广东铭丰包装材料有限公司 | A kind of polyethylene film and its application |
| CN109291597A (en) * | 2018-10-18 | 2019-02-01 | 浙江金石包装有限公司 | A kind of package compound film of media-resistant and preparation method thereof |
| CN109514957A (en) * | 2017-09-16 | 2019-03-26 | 浙江保禄包装科技股份有限公司 | The repeatable polyolefin film sealed, composite covering film and preparation method thereof |
| CN109648968A (en) * | 2018-12-18 | 2019-04-19 | 江门市蓬江区华龙包装材料有限公司 | A kind of two-way easily tore film |
| CN110281621A (en) * | 2019-07-19 | 2019-09-27 | 河南省银丰塑料有限公司 | A kind of polyethylene is two-way easily to tear packaging film |
| CN110328956A (en) * | 2019-06-28 | 2019-10-15 | 江阴市江泰高分子新材料有限公司 | A kind of home appliance panel is dedicated easily to tear protective film |
| CN110509646A (en) * | 2019-09-19 | 2019-11-29 | 四川厚诚新材料有限公司 | A kind of high anti-puncture curtain coating polyethylene film and preparation method thereof |
| CN112848588A (en) * | 2021-01-04 | 2021-05-28 | 浙江海顺新材料有限公司 | Medium-resistant low-migration easy-to-tear polyolefin film, preparation method and easy-to-tear packaging structure |
| JP7342694B2 (en) | 2019-12-25 | 2023-09-12 | Dic株式会社 | Laminated films and packaging materials |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034737A (en) * | 1987-12-28 | 1989-08-16 | 出光石油化学株式会社 | Butene-1 polymer film and laminated film thereof |
| JP2009172902A (en) * | 2008-01-25 | 2009-08-06 | Toppan Printing Co Ltd | Barrier packaging material having straight line-cuttability |
| CN101927590A (en) * | 2010-02-26 | 2010-12-29 | 成都思雅科高分子材料有限公司 | Multilayer coextruded polyethylene film processed in down-blowing water-cooling ring film method |
| CN101942133A (en) * | 2010-08-13 | 2011-01-12 | 黄山永新股份有限公司 | Polyethylene film and laminated film with even heat-seal strength |
| JP2012000885A (en) * | 2010-06-17 | 2012-01-05 | Japan Polyethylene Corp | Easily tearable multilayered film and packaging material |
| CN104385732A (en) * | 2014-11-21 | 2015-03-04 | 江门市蓬江区华龙包装材料有限公司 | Easy-torn film and using method thereof |
-
2015
- 2015-09-06 CN CN201510560211.5A patent/CN105172290A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034737A (en) * | 1987-12-28 | 1989-08-16 | 出光石油化学株式会社 | Butene-1 polymer film and laminated film thereof |
| JP2009172902A (en) * | 2008-01-25 | 2009-08-06 | Toppan Printing Co Ltd | Barrier packaging material having straight line-cuttability |
| CN101927590A (en) * | 2010-02-26 | 2010-12-29 | 成都思雅科高分子材料有限公司 | Multilayer coextruded polyethylene film processed in down-blowing water-cooling ring film method |
| JP2012000885A (en) * | 2010-06-17 | 2012-01-05 | Japan Polyethylene Corp | Easily tearable multilayered film and packaging material |
| CN101942133A (en) * | 2010-08-13 | 2011-01-12 | 黄山永新股份有限公司 | Polyethylene film and laminated film with even heat-seal strength |
| CN104385732A (en) * | 2014-11-21 | 2015-03-04 | 江门市蓬江区华龙包装材料有限公司 | Easy-torn film and using method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105313414A (en) * | 2015-10-22 | 2016-02-10 | 安徽双津实业有限公司 | Linear unstretched polyethylene film easy to tear |
| CN109514957A (en) * | 2017-09-16 | 2019-03-26 | 浙江保禄包装科技股份有限公司 | The repeatable polyolefin film sealed, composite covering film and preparation method thereof |
| CN108673989A (en) * | 2018-05-21 | 2018-10-19 | 黄山永新股份有限公司 | A kind of high-barrier transparency film and its production method suitable for High-Speed Automatic packaging |
| CN109263200B (en) * | 2018-09-30 | 2020-08-25 | 黄山永新股份有限公司 | Bidirectional linear easy-to-tear polyethylene film and production process thereof |
| CN109263200A (en) * | 2018-09-30 | 2019-01-25 | 黄山永新股份有限公司 | A kind of two-way linear easily tears polyethylene film and its production technology |
| CN109291591A (en) * | 2018-10-08 | 2019-02-01 | 广东铭丰包装材料有限公司 | A kind of polyethylene film and its application |
| CN109291597A (en) * | 2018-10-18 | 2019-02-01 | 浙江金石包装有限公司 | A kind of package compound film of media-resistant and preparation method thereof |
| CN109648968A (en) * | 2018-12-18 | 2019-04-19 | 江门市蓬江区华龙包装材料有限公司 | A kind of two-way easily tore film |
| CN110328956A (en) * | 2019-06-28 | 2019-10-15 | 江阴市江泰高分子新材料有限公司 | A kind of home appliance panel is dedicated easily to tear protective film |
| CN110328956B (en) * | 2019-06-28 | 2021-04-27 | 江阴市江泰高分子新材料有限公司 | Special easy-tearing protective film for household appliance panel |
| CN110281621A (en) * | 2019-07-19 | 2019-09-27 | 河南省银丰塑料有限公司 | A kind of polyethylene is two-way easily to tear packaging film |
| CN110509646A (en) * | 2019-09-19 | 2019-11-29 | 四川厚诚新材料有限公司 | A kind of high anti-puncture curtain coating polyethylene film and preparation method thereof |
| JP7342694B2 (en) | 2019-12-25 | 2023-09-12 | Dic株式会社 | Laminated films and packaging materials |
| CN112848588A (en) * | 2021-01-04 | 2021-05-28 | 浙江海顺新材料有限公司 | Medium-resistant low-migration easy-to-tear polyolefin film, preparation method and easy-to-tear packaging structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105172290A (en) | Polyethylene film, packaging composite film, and making method of packaging composite film | |
| CN104191766A (en) | Polyethylene film, packaging composite film and preparation method thereof | |
| EP3224015B1 (en) | Polymer compositions and extrusion coated articles | |
| CN106183292B (en) | Three-layer co-extruded quick biaxial tension wide cut polyethylene co-extruded film and preparation method thereof | |
| CN104260520B (en) | Thick chilli sauce packaging composite film and preparation method thereof | |
| CN102285174B (en) | Composite packaging film and preparation method thereof | |
| CN101624112B (en) | Composite membrane for sauce and preparation method thereof | |
| CN102380996B (en) | A kind of food package plastic base material film and production technology thereof | |
| CN103895307B (en) | The non-stretched multilayer film of polyolefin | |
| CN102514329B (en) | Polyethylene film with resealing function and preparation method thereof | |
| CN103879112B (en) | Plastic compound flexible packaging polyethylene film and blow moiding method thereof | |
| KR20150106964A (en) | Improved multilayer blown films | |
| CN102719200B (en) | High-stiffness high-strength heat-sealing embossed film and preparation method thereof | |
| CN102416744A (en) | Food packaging plastic substrate film and production technology thereof | |
| CN106164162A (en) | The biaxial orientation metallocene linear-low density polyethylene film of improvement, its method and resin combination | |
| CN103434237B (en) | A kind of easy-tear type dry type composite sheet and production method thereof | |
| CN105073421A (en) | Packaging laminate, method for producing same, and packaging container produced from the packaging laminate | |
| CN104772956B (en) | A kind of light-weight packed film and preparation method thereof | |
| CN105415829B (en) | A kind of openable cover polyethylene film, the high-barrier openable cover film and preparation method thereof comprising the film | |
| CN105922690A (en) | Permeation resisting composite film | |
| CN105172291B (en) | Polyethylene film with easy straight-line tearing and preparation method for polyethylene film | |
| CN109177415A (en) | A kind of package compound film and preparation method thereof | |
| CN102173149B (en) | Antibacterial composite film used for vacuum packing of household articles and preparation method thereof | |
| CN108189506A (en) | PE films and preparation method thereof are easily taken off in heat-sealing repeatedly | |
| CN102423942A (en) | Plastic substrate film for food packaging and processing technic thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |