CN109016765A - A kind of polyethylene film - Google Patents
A kind of polyethylene film Download PDFInfo
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- CN109016765A CN109016765A CN201811170498.0A CN201811170498A CN109016765A CN 109016765 A CN109016765 A CN 109016765A CN 201811170498 A CN201811170498 A CN 201811170498A CN 109016765 A CN109016765 A CN 109016765A
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- hot sealing
- polyethylene film
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- 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
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/75—Printability
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- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
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- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of polyethylene films, including the corona layer, middle layer and hot sealing layer successively contacted；The raw material of the corona layer includes linear low density polyethylene, opening agent and auxiliary agent；The raw material of the middle layer includes vinyl olefins copolymer；The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；The mass ratio of vinyl olefins copolymer in the middle layer and the vinyl olefins copolymer in hot sealing layer is 1:0.15 ~ 0.3.Include the vinyl olefins copolymer of special ratios in the middle layer and hot sealing layer of polyethylene film provided by the invention, makes it have preferable flexibility.In addition, the polyethylene film easily prints, feel is preferable.The results showed that the flexibility of polyethylene film provided by the invention is 0.8 ~ 1.2mm；It carries out reverse drawing, ink three times in ink surface using 3mm thickness rubber strip not fall, and film deforms.
Description
Technical field
The present invention relates to field of packaging material more particularly to a kind of polyethylene films.
Background technique
With the increasingly promotion of packing technique, people no longer content just to food packaging and simply protect food, extend
The necessary functions such as effective period of food quality, and increasingly higher demands are proposed to the flexibility of food packaging in actual use.
Wherein, the flexibility of packaging is that people compare one of utility function of concern, therefore, soft packaging film it is just seasonable and
It is raw, and gradually receive significant attention.
Polyethylene film abbreviation PE film in packaging film, the thermoplastic polyester as obtained from vinyl polymerization, poly- second
Alkene film is colourless, tasteless, nontoxic, and be translucent shape.Polyethylene film has excellent dielectricity and moisture resistivity, can protect in low temperature
Hold flexibility and chemical stability.Common polyethylene film, including outer layer, middle layer and internal layer, the internal layer are ionomer
Layer, outer layer and middle layer are polyethylene layer, and the outer layer, middle layer are connected with internal layer coextru-lamination.Common polyethylene film has good
Chemical resistance well, grease resistance, but its flexibility is poor.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of polyethylene film, polyethylene film provided by the invention have compared with
Good flexibility.
The present invention provides a kind of polyethylene films, including the corona layer, middle layer and hot sealing layer successively contacted；
The raw material of the corona layer includes linear low density polyethylene, opening agent and auxiliary agent；
The raw material of the middle layer includes vinyl olefins copolymer；
The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；
The mass ratio of vinyl olefins copolymer in the middle layer and the vinyl olefins copolymer in hot sealing layer is 1:
0.15~0.3.
Preferably, in the raw material of the corona layer linear low density polyethylene, opening agent and auxiliary agent mass ratio be 0.4~
0.5:0.5~0.6:0.003~0.005.
Preferably, it linear low density polyethylene, vinyl olefins copolymer, opening agent and is helped in the raw material of the hot sealing layer
The mass ratio of agent is 0.70~0.85:0.3~0.15:0.006~0.012:0.007~0.009.
Preferably, the vinyl olefins copolymer is selected from ethylene-octene copolymer.
Preferably, the vinyl olefins copolymer includes the vinyl olefins copolymer and/or board that the trade mark is A1085S
Number be A4085S vinyl olefins copolymer.
Preferably, the linear low density polyethylene include the trade mark be matt 2230 linear low density polyethylene and/or
The trade mark is the linear low density polyethylene of 0220KJ.
Preferably, the opening agent is silica.
Preferably, the auxiliary agent is poly(p-phenylene terephthalamide).
Preferably, the thickness ratio of the corona layer, middle layer and hot sealing layer is (15~25): (15~25): (15~25).
The present invention provides a kind of polyethylene films, including the corona layer, middle layer and hot sealing layer successively contacted；The corona
The raw material of layer includes linear low density polyethylene, opening agent and auxiliary agent；The raw material of the middle layer includes vinyl olefins copolymerization
Object；The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；In described
The mass ratio of vinyl olefins copolymer in interbed and the vinyl olefins copolymer in hot sealing layer is 1:0.15~0.3.This
Invent provide polyethylene film middle layer and hot sealing layer in include special ratios vinyl olefins copolymer, make it have compared with
Good flexibility.In addition, the polyethylene film easily prints, feel is preferable.The results showed that polyethylene film provided by the invention
Flexibility is 0.8~1.2mm；Reverse drawing three times is carried out in ink surface with 3mm thickness rubber strip, ink does not fall, and film deforms.
Specific embodiment
The present invention provides a kind of polyethylene films, including the corona layer, middle layer and hot sealing layer successively contacted；
The raw material of the corona layer includes linear low density polyethylene, opening agent and auxiliary agent；
The raw material of the middle layer includes vinyl olefins copolymer；
The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；
The mass ratio of vinyl olefins copolymer in the middle layer and the vinyl olefins copolymer in hot sealing layer is 1:
0.15~0.3.
The present invention provides a kind of polyethylene films, including corona layer.In the present invention, the raw material of the corona layer includes line
Property low density polyethylene (LDPE), opening agent and auxiliary agent；Linear low density polyethylene in the raw material of the corona layer, opening agent and auxiliary agent
Mass ratio is preferably 0.4~0.5:0.6~0.5:0.003~0.005, more preferably 0.42~0.48:0.52~0.57:
0.004。
In the present invention, the linear low density polyethylene is preferably selected from the linear low density polyethylene that the trade mark is matt 2230
The linear low density polyethylene that alkene and/or the trade mark are 0220KJ；In a specific embodiment of the present invention, the trade mark in the raw material layer
The mass ratio for the linear low density polyethylene that linear low density polyethylene and the trade mark for matt 2230 are 0220KJ is 0.4~
0.5:0.5~0.6.The present invention does not have special limitation to the source of above-mentioned linear low density polyethylene, using art technology
Linear low density polyethylene known to personnel can such as use its commercial goods.In a specific embodiment of the present invention, institute
The linear low density polyethylene that the trade mark is matt 2230 is stated to buy in Co., Ltd of Borealis.
In the present invention, the opening agent is preferably silica；It is opening for AB06 that the opening agent, which is preferably selected from the trade mark,
The opening agent that mouth agent and/or the trade mark are 08H.In a specific embodiment of the present invention, the trade mark is the opening agent and board of AB06
It number is preferably 0.006:0.005~0.007 for the mass ratio of opening agent of 08H.The present invention does not have the source of above-mentioned opening agent
Special limitation can such as use its commercial goods using above-mentioned opening agent well known to those skilled in the art.
In the present invention, the auxiliary agent is preferably poly(p-phenylene terephthalamide)；The auxiliary agent is preferably selected from the trade mark
The poly(p-phenylene terephthalamide) of A100.In the present invention, the auxiliary agent makes the more smooth adaptation printing of film surface.The present invention
There is no special limitation to the source of above-mentioned auxiliary agent, using above-mentioned auxiliary agent well known to those skilled in the art, can such as adopt
With its commercial goods.
Polyethylene film provided by the invention includes the middle layer contacted with above-mentioned corona layer.In the present invention, the centre
The raw material of layer includes vinyl olefins copolymer.In the present invention, the vinyl olefins copolymer is preferably selected from ethylene-octene
Copolymer.In the present invention, the vinyl olefins copolymer is preferably selected from the ethylene-octene copolymer that the trade mark is A1085S
And/or the trade mark is the ethylene-octene copolymer of A4085S.The present invention is not special to the source of above-mentioned vinyl olefins copolymer
Limitation its commercial goods can such as be used using above-mentioned vinyl olefins copolymer well known to those skilled in the art.At this
In the specific embodiment of invention, the vinyl olefins copolymer of the A1085S is bought in Mitsui Co., Ltd.
Polyethylene film provided by the invention includes the hot sealing layer contacted with above-mentioned middle layer.In the present invention, the heat-sealing
The raw material of layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；In the raw material of the hot sealing layer
Linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent mass ratio be preferably 0.7~0.85:0.3~
0.15:0.006~0.012:0.007~0.009, more preferably 0.78~0.83:0.22~0.17:0.007~0.011:
0.008.In the present invention, the line in corona layer described in the linear low density polyethylene and above-mentioned technical proposal in the hot sealing layer
The type of property low density polyethylene (LDPE) is consistent, and details are not described herein.It is linear in the hot sealing layer in the specific embodiment of the invention
Low density polyethylene (LDPE) is the linear low density polyethylene of trade mark matt 2230.
In the present invention, in middle layer described in the vinyl olefins copolymer in the hot sealing layer and above-mentioned technical proposal
The category of vinyl olefins copolymer is consistent, and details are not described herein.In the present invention, the vinyl alkene in the middle layer
The mass ratio of vinyl olefins copolymer in hydrocarbon copolymer and hot sealing layer is 1:0.15~0.3, preferably 1:0.17~0.25.
In the present invention, raw material includes opening agent in the hot sealing layer, and the opening agent in the hot sealing layer is preferably dioxy
SiClx；Opening agent in the hot sealing layer is preferably selected from the opening agent that the opening agent that the trade mark is AB06 and/or the trade mark are 08H.?
In specific embodiments of the present invention, when the opening agent that the opening agent includes the opening agent that the trade mark is AB06 and the trade mark is 08H, institute
The mass ratio for stating the opening agent that the trade mark is AB06 and the opening agent that the trade mark is 08H is preferably 1:1.
In the present invention, raw material includes auxiliary agent in the hot sealing layer, and the auxiliary agent in the heat-sealing is preferably poly- terephthaldehyde
Acyl p-phenylenediamine；The auxiliary agent is preferably selected from the poly(p-phenylene terephthalamide) that the trade mark is A100.
In the present invention, the thickness of the corona layer, middle layer and hot sealing layer is than being preferably (15~25): (15~25):
(15~25), more preferably (18~22): (19~21): (17~23).In a specific embodiment of the present invention, the corona
The thickness of layer, middle layer and hot sealing layer is 20 μm.
The polyethylene film preferably raw material of corona layer, middle layer as described in above-mentioned technical proposal and hot sealing layer coextrusion is blow molded into
Type.Corona layer raw material, middle layer raw material and hot sealing layer raw material are preferably separately added into well known to those skilled in the art by the present invention
In three barrels of extruder, and three sections of heating are carried out to each barrel.It is excellent that the present invention is preferably provided with one section of heating temperature of each barrel
It is selected as 170 DEG C~180 DEG C；Two sections of heating temperatures are preferably 185 DEG C~195 DEG C；Three sections of heating temperatures are preferably 185 DEG C~195
℃；It is preferably 178 DEG C~180 DEG C, more preferably 180 DEG C that die head temperature, which is arranged,；Control melt extrusion pressure is preferably 25~
35MPa.Raw material in above three barrel melts and is formed pipe by extruder, after pipe is stretched from extruder die head
The heart goes out compressed air, pipe is blown into blister film, while by blister film through vane cooling wind cooling and shaping, thus be made according to
The secondary polyethylene film including corona layer, middle layer and hot sealing layer.
The present invention tests the flexibility of the polyethylene film of above-mentioned offer, and test method includes:
The both ends of above-mentioned polyethylene film are superimposed together to form a ring, are placed on a horizontal plate, and with a steel pole pressure
The end firmly overlapped；It parks after a certain period of time, the maximum height with the two sides of graduated scale measurement ring relative to plate.With ring
Height characterizes the flexibility of polyethylene film (height of ring is lower, and expression flexibility is bigger).
Test result shows: polyethylene film provided by the invention has preferable flexibility.
The present invention tests the easy printing of the polyethylene film of above-mentioned offer, and test method includes:
By the corona level coating printing ink of above-mentioned polyethylene film, dry, it is anti-three times in ink surface progress using 3mm thickness rubber strip
It draws, whether detection ink does not fall and film deforms.
Test result shows: polyethylene film ink provided by the invention does not fall, and easily prints, and film deforms.
The present invention provides a kind of polyethylene films, including the corona layer, middle layer and hot sealing layer successively contacted；The corona
The raw material of layer includes linear low density polyethylene, opening agent and auxiliary agent；The raw material of the middle layer includes vinyl olefins copolymerization
Object；The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；In described
The mass ratio of vinyl olefins copolymer in interbed and the vinyl olefins copolymer in hot sealing layer is 1:0.15~0.3.This
Invent provide polyethylene film middle layer and hot sealing layer in include special ratios vinyl olefins copolymer, make it have compared with
Good flexibility.In addition, the polyethylene film easily prints, feel is preferable.The results showed that polyethylene film provided by the invention
Flexibility is 0.8~1.2mm；It carries out reverse drawing, ink three times in ink surface using 3mm thickness rubber strip not fall, and film deforms.
In order to further illustrate the present invention, detailed to a kind of polyethylene film progress provided by the invention below with reference to embodiment
Ground description, but they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.4kg trade mark be the linear low density polyethylene of matt 2230,0.6kg the trade mark be the linear low of 0220KJ
Density polyethylene, 0.006kg the trade mark be the opening agent of 08H, 0.005kg the trade mark be AB06 opening agent and 0.004kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.75kg be the linear low density polyethylene of matt 2230,0.25kg the trade mark be the second of A1085S
Alkene-octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark be A100 auxiliary agent poly(p-phenylene terephthalamide)；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 185 DEG C, and three sections of heating temperatures are 190 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 35MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The present invention carries out polyethylene film prepared by embodiment 1 according to the test method of flexibility described in above-mentioned technical proposal
Flexibility test, test result are as follows: the flexibility of polyethylene film prepared by the embodiment of the present invention 1 is 1mm.
The polyethylene film that the present invention is prepared embodiment 1 according to the test method of easy printing described in above-mentioned technical proposal into
The easy printing test of row, test result are as follows: polyethylene film prepared by the embodiment of the present invention 1 easily prints.
Embodiment 2
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.5kg trade mark be the linear low density polyethylene of matt 2230,0.5kg the trade mark be the linear low of 0220KJ
Density polyethylene, 0.006kg the trade mark be the opening agent of 08H, 0.007kg the trade mark be AB06 opening agent and 0.004kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.8kg be the linear low density polyethylene of matt 2230,0.2kg the trade mark be the ethylene-of A1085S
Octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 190 DEG C, and three sections of heating temperatures are 185 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 25MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The present invention carries out polyethylene film prepared by embodiment 2 according to the test method of flexibility described in above-mentioned technical proposal
Flexibility test, test result are as follows: the flexibility of polyethylene film prepared by the embodiment of the present invention 2 is 1.2mm.
The polyethylene film that the present invention is prepared embodiment 2 according to the test method of easy printing described in above-mentioned technical proposal into
The easy printing test of row, test result are as follows: polyethylene film prepared by the embodiment of the present invention 2 easily prints.
Embodiment 3
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.55kg trade mark be the linear low density polyethylene of matt 2230,0.45kg the trade mark be the linear of 0220KJ
Low density polyethylene (LDPE), 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.004kg
The trade mark be A100 auxiliary agent poly(p-phenylene terephthalamide)；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.7kg be the linear low density polyethylene of matt 2230,0.3kg the trade mark be the ethylene-of A1085S
Octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 190 DEG C, and three sections of heating temperatures are 185 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 30MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The present invention carries out polyethylene film prepared by embodiment 3 according to the test method of flexibility described in above-mentioned technical proposal
Flexibility test, test result are as follows: the flexibility of polyethylene film prepared by the embodiment of the present invention 3 is 0.8mm.
The polyethylene film that the present invention is prepared embodiment 3 according to the test method of easy printing described in above-mentioned technical proposal into
The easy printing test of row, test result are as follows: polyethylene film prepared by the embodiment of the present invention 3 easily prints.
Comparative example 1
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.6kg trade mark be the linear low density polyethylene of matt 2230,0.4kg the trade mark be the linear low of 0220KJ
Density polyethylene, 0.006kg the trade mark be the opening agent of 08H, 0.005kg the trade mark be AB06 opening agent and 0.004kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.9kg be the linear low density polyethylene of matt 2230,0.1kg the trade mark be the ethylene-of A1085S
Octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 185 DEG C, and three sections of heating temperatures are 190 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 35MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The polyethylene film that this comparative example 1 is prepared comparative example 1 according to the test method of flexibility described in above-mentioned technical proposal
Carry out flexibility test, test result are as follows: the flexibility of polyethylene film prepared by comparative example 1 is 2mm.
Comparative example 2
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.4kg trade mark be the linear low density polyethylene of matt 2230,0.6kg the trade mark be the linear low of 0220KJ
Density polyethylene, 0.006kg the trade mark be the opening agent of 08H, 0.007kg the trade mark be AB06 opening agent and 0.004kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.6kg be the linear low density polyethylene of matt 2230,0.4kg the trade mark be the ethylene-of A4085S
Octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 190 DEG C, and three sections of heating temperatures are 185 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 25MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The polyethylene film that this comparative example 2 is prepared comparative example 2 according to the test method of flexibility described in above-mentioned technical proposal
Carry out flexibility test, test result are as follows: the flexibility of polyethylene film prepared by comparative example 2 of the present invention is 0.7mm, and pliability subtracts
It is small to be unable to volume production.
Comparative example 3
The raw material, the raw material of middle layer and the raw material of hot sealing layer of corona layer are separately added into three barrels of extruder machine,
Each composition of raw materials is as follows:
Corona layer: the 0.55kg trade mark be the linear low density polyethylene of matt 2230,0.45kg the trade mark be the linear of 0220KJ
Low density polyethylene (LDPE), 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.004kg
The trade mark be A100 auxiliary agent poly(p-phenylene terephthalamide)；
Middle layer: the trade mark of 1kg is the ethylene-octene copolymer of A1085S；
Hot sealing layer: the trade mark of 0.5kg be the linear low density polyethylene of matt 2230,0.5kg the trade mark be the ethylene-of A1085S
Octene copolymer, 0.006kg the trade mark be the opening agent of 08H, 0.006kg the trade mark be AB06 opening agent and 0.008kg
The trade mark is the auxiliary agent poly(p-phenylene terephthalamide) of A100；
It is 180 DEG C that one section of heating temperature of each barrel, which is arranged, and two sections of heating temperatures are 190 DEG C, and three sections of heating temperatures are 185 DEG C, if
The temperature for setting die head is 180 DEG C, and control melt extrusion pressure is 30MPa；Raw particles in above three barrel are by squeezing out
Machine melts and is formed pipe, goes out compressed air from extruder die head center after pipe is stretched, and pipe blown film is blown into bubble
Shape film, blow-up ratio 1:2.5, while polyethylene film is made through vane cooling wind cooling and shaping in blister film；
The polyethylene film successively includes corona layer, middle layer and hot sealing layer, corona layer with a thickness of 20 μm, the thickness of middle layer
Be 20 μm, hot sealing layer with a thickness of 20 μm.
The polyethylene film that this comparative example 3 is prepared comparative example 3 according to the test method of flexibility described in above-mentioned technical proposal
Carry out flexibility test, test result are as follows: the flexibility of polyethylene film prepared by comparative example 3 of the present invention is 0.5mm, substantially not
It is capable of processing.
As seen from the above embodiment, the present invention provides a kind of polyethylene films, including corona layer, the middle layer successively contacted
And hot sealing layer；The raw material of the corona layer includes linear low density polyethylene, opening agent and auxiliary agent；The raw material packet of the middle layer
Include vinyl olefins copolymer；The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening
Agent and auxiliary agent；The mass ratio of vinyl olefins copolymer in the middle layer and the vinyl olefins copolymer in hot sealing layer is
1:0.15~0.3.Vinyl olefins in the middle layer and hot sealing layer of polyethylene film provided by the invention including special ratios are total
Polymers makes it have preferable flexibility.In addition, the polyethylene film easily prints, feel is preferable.The results showed that of the invention
The flexibility of the polyethylene film of offer is 0.8~1.2mm；Reverse drawing three times is carried out in ink surface using 3mm thickness rubber strip, ink is not
Fall, and film deforms.
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, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of polyethylene film, including the corona layer, middle layer and hot sealing layer successively contacted；
The raw material of the corona layer includes linear low density polyethylene, opening agent and auxiliary agent；
The raw material of the middle layer includes vinyl olefins copolymer；
The raw material of the hot sealing layer includes linear low density polyethylene, vinyl olefins copolymer, opening agent and auxiliary agent；
The mass ratio of vinyl olefins copolymer in the middle layer and the vinyl olefins copolymer in hot sealing layer is 1:
0.15~0.3.
2. according to claim 1 polyethylene film, which is characterized in that linear low density polyethylene in the raw material of the corona layer
The mass ratio of alkene, opening agent and auxiliary agent is 0.4~0.5:0.6~0.5:0.003~0.005.
3. according to claim 1 polyethylene film, which is characterized in that linear low density polyethylene in the raw material of the hot sealing layer
Alkene, vinyl olefins copolymer, opening agent and auxiliary agent mass ratio be 0.70~0.85:0.3~0.15:0.006~0.012:
0.007~0.009.
4. according to claim 1 polyethylene film, which is characterized in that the vinyl olefins copolymer be selected from ethylene-octene
Copolymer.
5. according to claim 1 polyethylene film, which is characterized in that the vinyl olefins copolymer includes that the trade mark is
The vinyl olefins copolymer and/or the trade mark of A1085S is the vinyl olefins copolymer of A4085S.
6. according to claim 1 polyethylene film, which is characterized in that the linear low density polyethylene include the trade mark be matt
2230 linear low density polyethylene and/or the trade mark is the linear low density polyethylene of 0220KJ.
7. according to claim 1 polyethylene film, which is characterized in that the opening agent be silica.
8. according to claim 1 polyethylene film, which is characterized in that the auxiliary agent be poly(p-phenylene terephthalamide).
9. according to claim 1 polyethylene film, which is characterized in that the thickness ratio of the corona layer, middle layer and hot sealing layer
For (15~25): (15~25): (15~25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811170498.0A CN109016765A (en) | 2018-10-09 | 2018-10-09 | A kind of polyethylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811170498.0A CN109016765A (en) | 2018-10-09 | 2018-10-09 | A kind of polyethylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109016765A true CN109016765A (en) | 2018-12-18 |
Family
ID=64615798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811170498.0A Withdrawn CN109016765A (en) | 2018-10-09 | 2018-10-09 | A kind of polyethylene film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109016765A (en) |
-
2018
- 2018-10-09 CN CN201811170498.0A patent/CN109016765A/en not_active Withdrawn
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