CN109397777A - A kind of high-barrier packing film and its cross-linking treatment method - Google Patents
A kind of high-barrier packing film and its cross-linking treatment method Download PDFInfo
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- CN109397777A CN109397777A CN201811391731.8A CN201811391731A CN109397777A CN 109397777 A CN109397777 A CN 109397777A CN 201811391731 A CN201811391731 A CN 201811391731A CN 109397777 A CN109397777 A CN 109397777A
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (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
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of high-barrier packing films, are followed successively by outer layer, upper adhesive layer, high-obstruction, lower adhesive layer, hot sealing layer from top to bottom；The outer layer uses raw material for the mixture of EVA and PE；The upper adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；The high-obstruction uses raw material for ethylene-vinyl alcohol copolymer；The lower adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；The hot sealing layer uses raw material for the mixture of EVA and PE.High-barrier packing film provided by the invention has the characteristics that barrier property is high, overall structural strength is good, stability is good, can satisfy the market demand.
Description
Technical field
The invention belongs to pack technical field of membrane, in particular to a kind of high-barrier packing film and its crosslinking Treatment side
Method.
Background technique
With the innovation of manner of packing, skin packaging becomes the upstart of packaging, and fit film is rapidly developed.It is existing
Fit film often use dry process that each film structure is combined by adhesive, such technique be difficult to control it is compound after
The flatness and thickness of fit film, so that the barriering effect of packing film is bad, whole structural strength is not high enough, and
The phenomenon that combined strength bination decays at any time is also more apparent, can not effectively meet Packaging Industry demand.
Summary of the invention
The object of the present invention is to provide a kind of barrier property height, the fit packet of high-barrier that overall structural strength is good, stability is good
Film is filled, the market demand is met.
A second object of the present invention is to provide a kind of cross-linking treatment methods of high-barrier packing film.
To achieve the goals above, The technical solution adopted by the invention is as follows:
The first aspect of the invention provides a kind of high-barrier packing film, is followed successively by outer layer, upper viscous from top to bottom
Close layer, high-obstruction, lower adhesive layer, hot sealing layer；
The outer layer uses raw material for the mixture of EVA and PE；
The upper adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；
The high-obstruction uses raw material for ethylene-vinyl alcohol copolymer；
The lower adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；
The hot sealing layer uses raw material for the mixture of EVA and PE.
The mass ratio of EVA and PE is 20:80~80:20 in the mixture of the EVA and PE.
The outer layer is 1~5 layer, preferably 1,3,4,5 layer.
The maleic anhydride modified density of pe 0.91~0.925g/ml of range, melt index are 1~5.
In the upper adhesive layer, lower adhesive layer the mass ratio of maleic anhydride modified polyethylene and polyethylene be 10:90~
90:10。
The density range of the ethylene-vinyl alcohol copolymer is 1.17~1.25g/ml, it is desirable that 44% or less ethylene contents.
The hot sealing layer is 1~5 layer, preferably 1,3,4,5 layer.
The second aspect of the invention provides a kind of preparation method of high-barrier packing film, including following step
It is rapid:
Outer layer the mixture of EVA and PE is added in the hopper of extruder, and temperature melts under conditions of being 160-200 DEG C,
Into mouth mold；
Upper adhesive layer the mixture of Tie and PE is added in the hopper of extruder, under conditions of temperature is 190-220 DEG C
Melting, into mouth mold；
High-obstruction EVOH is added in the hopper of extruder, and temperature melts under the conditions of being 180-200 DEG C, into mouth mold；
Lower adhesive layer the mixture of Tie and PE is added in the hopper of extruder, and temperature melts under the conditions of being 190-220 DEG C
Melt, into mouth mold；
Hot sealing layer 15 mixture of EVA and PE is added in the hopper of extruder, and temperature melts under the conditions of being 160-215 DEG C
Melt, into mouth mold；
Then by squeezing out, cooling and shaping obtains the high-barrier packing film.
The third aspect of the invention provides a kind of preparation method of high-barrier packing film by crosslinking Treatment,
The following steps are included:
By the high-barrier skin packaging film roll of preparation by unreeling, high-energy ray scanning is carried out under different irradiation doses
Irradiation carries out crosslinking Treatment, and processing voltage is 0.1-100Mv, treatment dosage 8-22Mrad, obtains the height Jing Guo crosslinking Treatment
Obstruct packing film.
Due to the adoption of the above technical scheme, the present invention has the following advantages and beneficial effects:
High-barrier packing film provided by the invention has the spy that barrier property is high, overall structural strength is good, stability is good
Point, can satisfy the market demand.
Cross-linking treatment method of the invention, it can be ensured that packing film keeps higher heat seal strength before and after the processing,
Making the homogeneity of packing film fitting intensity is improved, while not having the shortcomings that fit heat seal strength is substantially reduced.
High-barrier packing film provided by the invention is suitable for stored under refrigeration (0-4 DEG C), there is the longer shelf-life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of high-barrier packing film prepared by the embodiment of the present invention 1.
Fig. 2 be the embodiment of the present invention 2 prepare high-barrier packing film structural schematic diagram (outer layer be 1 layer, hot sealing layer
It is 1 layer).
Fig. 3 be the embodiment of the present invention 3 prepare high-barrier packing film structural schematic diagram (outer layer be 5 layers, hot sealing layer
It is 5 layers).
Fig. 4 is the flow diagram of the cross-linking treatment method of high-barrier packing film prepared by the embodiment of the present invention 1.
Wherein, 11 be outer layer, and 12 be upper adhesive layer, and 13 be high-obstruction, and 14 be lower adhesive layer, and 15 be hot sealing layer.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
Embodiment 1
A kind of high-barrier packing film is followed successively by outer layer 11, upper adhesive layer 12, high-obstruction 13, lower viscous from top to bottom
Layer 14, hot sealing layer 15 are closed, as shown in FIG. 1, FIG. 1 is the structural representations of high-barrier packing film prepared by the embodiment of the present invention 1
Figure.
The outer layer 11 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), and the EVA trade mark is
E180L is purchased from HanwhaTotal producer；The PE trade mark is 2038.68, is purchased from DOW producer；The mass ratio of EVA and PE is 20:80
~80:20；Outer layer 11 includes three layers in the present embodiment, is all made of raw material EVA and PE and is made.
The upper adhesive layer 12 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The high-obstruction 13 uses raw material for ethylene-vinyl alcohol copolymer (EVOH), density range be 1.17~
1.25g/ml, it is desirable that 44% or less ethylene contents.High-obstruction has used EVOH, it is ensured that packs long quality guarantee period and the guarantor of product
Effect is deposited, film has preferable flexibility, impact resistance, tensile property and heat sealability.
The lower adhesive layer 14 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The hot sealing layer 15 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), and the EVA trade mark is
E180L is purchased from H anwhaTotal producer；The PE trade mark is 5500G, is purchased from DOW producer；The mass ratio of EVA and PE be 20:80~
80:20；Hot sealing layer 15 includes three layers in the present embodiment, is all made of raw material EVA and PE and is made.
A kind of preparation method of high-barrier packing film, comprising the following steps:
1st layer, EVA+PE (mass ratio 30:70) is added in the hopper 1 of extruder, the condition that temperature is 180-200 DEG C
Lower melting, into mouth mold；
2nd layer, EVA+PE (mass ratio 60:40) is added in the hopper 2 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
3rd layer, EVA+PE (mass ratio 30:70) is added in the hopper 3 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
The above up of three-layer outer layer 11；
4th layer of upper adhesive layer 12 Tie+PE (mass ratio 90:10) is added in the hopper 4 of extruder, temperature 190-
It is melted under conditions of 220 DEG C, into mouth mold；
5th layer high-barrier layer 13 EVOH is added in the hopper 5 of extruder, and temperature melts under the conditions of being 180-200 DEG C,
Into mouth mold；
6th layer of lower adhesive layer 14 Tie+PE (mass ratio 90:10) is added in the hopper 6 of extruder, temperature 190-
It is melted under the conditions of 220 DEG C, into mouth mold.
7th layer, EVA+PE (mass ratio 30:70) is added in the hopper 7 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
8th layer, EVA+PE (mass ratio 60:40) is added in the hopper 8 of extruder, the condition that temperature is 160-190 DEG C
Lower melting, into mouth mold；
9th layer, EVA+PE (mass ratio 30:70) is added in the hopper 9 of extruder, under the conditions of temperature is 175-215 DEG C
Melting, into mouth mold；
7,8,9 ups of three-layer hot sealing layer 15；
Then by squeezing out, cooling and shaping, finally, being wound as needed with winder.
The structure of the high-barrier packing film (VOV) of acquisition is EVA+PE/EVA+PE/EVA+PE/Tie+PE/EVOH/
Tie+PE/EVA+PE/EVA+PE/EVA+PE。
A kind of preparation method of the high-barrier packing film by crosslinking Treatment, cross-linking treatment method use and penetrate processing
Mode, comprising the following steps:
Production equipment: offline EB machine is purchased from Wuxi Apong Radiation Technology Co., Ltd.
The high-barrier skin packaging film roll of preparation is put into offline EB machine by unwinding equipment, in different irradiation doses
Lower progress high-energy ray scanning irradiation carries out crosslinking Treatment, and processing voltage is 0.1-100Mv, treatment dosage 8-22Mrad, leads to
Supercooling roller rolling after cooling obtains the high-barrier packing film Jing Guo crosslinking Treatment.As shown in figure 4, Fig. 4 is of the invention real
Apply the flow diagram of the cross-linking treatment method of the high-barrier packing film of the preparation of example 1.
Influence of the different irradiation dose to the high-barrier packing film degree of cross linking is different, and the size of dosage is by setting
Standby state modulator, physical relationship are as follows:
D=(K*N*I)/V
V: linear velocity (10~40m/min)；K:K numerical constant (2.2-2.7)；N: the quenching treatment number of plies (1-5)；I: line
(< 55mA)；D (unit Mrad): dosage (fixed according to the technological requirements).
Table 1 is the data that different parameters handle high-barrier packing film, and sample 1~6 is using manufactured in the present embodiment
Six samples of high-barrier packing film are irradiated using different irradiation doses.
Table 1
| Voltage Mv | K value | It is quenched number of plies N | I line mA | V linear velocity m/min | |
| Sample 1 | 0.5 | 2.3 | 4.5 | 30 | 31.1 |
| Sample 2 | 0.5 | 2.3 | 4.5 | 30 | 25.9 |
| Sample 3 | 0.5 | 2.3 | 4.5 | 30 | 22.2 |
| Sample 4 | 0.5 | 2.3 | 4.5 | 30 | 19.4 |
| Sample 5 | 0.5 | 2.3 | 4.5 | 30 | 17.3 |
| Sample 6 | 0.5 | 2.3 | 4.5 | 30 | 15.5 |
High-barrier packing film manufactured in the present embodiment is without the sample of crosslinking Treatment and after crosslinking Treatment
The performance comparison of sample 1~6 is as shown in table 2, and in table, MD indicates longitudinal, and TD is indicated laterally.
Table 2
From the data in table 2, it can be seen that the mechanical performance of the sample 1~6 after crosslinking Treatment is better than without crosslinking Treatment
Sample, wherein it is optimal with the mechanical performance of sample 4.High-barrier packing film of the invention passes through crosslinking Treatment appropriate
Afterwards, heat resistance is more preferable, and tensile strength increases.
Comparative example 1
Structure without barrier packing film (VEV) are as follows: EVA+PE/EVA+PE/EVA+PE/EVA+PE/EVA+PE/EVA+
PE/EVA+PE/EVA+PE/EVA+PE。
Preparation method without barrier packing film (VEV), comprising the following steps:
1st layer, EVA+PE (mass ratio is 30:70) is added in the hopper 1 of extruder, the item that temperature is 180-200 DEG C
It is melted under part, into mouth mold；
2nd layer, EVA+PE (mass ratio is 60:40) is added in the hopper 2 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
3rd layer, EVA+PE (mass ratio is 30:70) is added in the hopper 3 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
4th layer, EVA+PE (mass ratio is 60:40) is added in the hopper 3 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
5th layer, EVA+PE (mass ratio is 30:70) is added in the hopper 3 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
6th layer, EVA+PE (ratio is 60:40) is added in the hopper 3 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
7th layer, EVA+PE (mass ratio is 30:70) is added in the hopper 7 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
8th layer, EVA+PE (mass ratio is 60:40) is added in the hopper 8 of extruder, the item that temperature is 160-190 DEG C
It is melted under part, into mouth mold；
9th layer, EVA+PE (mass ratio is 30:70) is added in the hopper 9 of extruder, temperature is 175-215 DEG C of condition
Lower melting, into mouth mold；
Then by squeezing out, cooling and shaping, finally, being wound as needed with winder.
A kind of preparation method without barrier packing film by crosslinking Treatment, cross-linking treatment method use and penetrate processing
Mode, comprising the following steps:
By being put into offline EB machine without barrier packing film volume by unwinding equipment for preparation, in different irradiation doses
Lower progress high-energy ray scanning irradiation carries out crosslinking Treatment, and processing voltage is 0.1-100Mv, treatment dosage 8-22Mrad, leads to
Supercooling roller rolling after cooling is obtained by crosslinking Treatment without barrier packing film.
The used device parameter of the irradiation dose of sample 7~12 is as shown in table 3, and irradiation dose calculating is mentioned according to embodiment 1
The formula of confession calculates:
Table 3
| Voltage Mv | K value | It is quenched number of plies N | I line mA | V linear velocity m/min | |
| Sample 7 | 0.5 | 2.3 | 4.5 | 30 | 31.1 |
| Sample 8 | 0.5 | 2.3 | 4.5 | 30 | 25.9 |
| Sample 9 | 0.5 | 2.3 | 4.5 | 30 | 22.2 |
| Sample 10 | 0.5 | 2.3 | 4.5 | 30 | 19.4 |
| Sample 11 | 0.5 | 2.3 | 4.5 | 30 | 17.3 |
| Sample 12 | 0.5 | 2.3 | 4.5 | 30 | 15.5 |
The sample 1~6 of high-barrier packing film prepared by embodiment 1 after crosslinking Treatment is prepared with comparative example 1
The performance comparison without sample 7~12 of the barrier packing film after crosslinking Treatment it is as shown in table 4, in table, MD indicates vertical
To TD is indicated laterally.
Table 4
From the data in table 4, it can be seen that the machinery of the high-barrier packing film (sample 1~6) by crosslinking Treatment of embodiment 1
Performance is better than comparative example 1 by crosslinking Treatment without barrier packing film (sample 7~12) performance, and has barrier property
Energy.The OTR oxygen transmission rate very little of sample 1~6, the OTR oxygen transmission rate of sample 7~12 is big, without barrier property, production prepared by the present invention
Product are suitable for refrigeration package and frozen-pack, and product prepared by comparative example 1 may be only available for frozen-pack.
Embodiment 2
A kind of high-barrier packing film is followed successively by outer layer 11, upper adhesive layer 12, high-obstruction 13, lower viscous from top to bottom
Layer 14, hot sealing layer 15 are closed, as shown in Fig. 2, Fig. 2 is the structural representation of high-barrier packing film prepared by the embodiment of the present invention 2
Scheme (outer layer is 1 layer, hot sealing layer is 1 layer).
The outer layer 11 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the present embodiment China and foreign countries
Layer 11 includes one layer, is made of raw material EVA and PE.
The upper adhesive layer 12 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The high-obstruction 13 uses raw material for ethylene-vinyl alcohol copolymer (EVOH), density range be 1.17~
1.25g/ml, it is desirable that 44% or less ethylene contents.
The lower adhesive layer 14 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The hot sealing layer 15 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), in the present embodiment
Hot sealing layer 15 includes one layer, is made of raw material EVA and PE.
A kind of preparation method of high-barrier packing film, comprising the following steps:
1st layer of outer layer 11 EVA+PE (mass ratio 30:70) is added in the hopper 1 of extruder, and temperature is 180-200 DEG C
Under conditions of melt, into mouth mold；
2nd layer of upper adhesive layer 12 Tie+PE (mass ratio 90:10) is added in the hopper 2 of extruder, temperature 190-
It is melted under conditions of 220 DEG C, into mouth mold；
3rd layer high-barrier layer 13 EVOH is added in the hopper 3 of extruder, and temperature melts under the conditions of being 180-200 DEG C,
Into mouth mold；
4th layer of lower adhesive layer 14 Tie+PE (mass ratio 90:10) is added in the hopper 4 of extruder, temperature 190-
It is melted under the conditions of 220 DEG C, into mouth mold.
5th layer of hot sealing layer 15 EVA+PE (mass ratio 30:70) is added in the hopper 5 of extruder, temperature 175-215
It is melted under the conditions of DEG C, into mouth mold；
Then by squeezing out, cooling and shaping, finally, being wound as needed with winder.
The structure of the high-barrier packing film (VOV) of acquisition is EVA+PE/Tie+PE/EVOH/Tie+PE/EVA+PE.
A kind of preparation method of the high-barrier packing film by crosslinking Treatment, cross-linking treatment method use and penetrate processing
Mode, comprising the following steps:
Production equipment: offline EB machine is purchased from Wuxi Apong Radiation Technology Co., Ltd.
The high-barrier skin packaging film roll of preparation is put into offline EB machine by unwinding equipment, in different irradiation doses
Lower progress high-energy ray scanning irradiation carries out crosslinking Treatment, and processing voltage is 0.5Mv, and treatment dosage 14Mrad passes through cooling
Roller rolling after cooling obtains the high-barrier packing film Jing Guo crosslinking Treatment.
Embodiment 3
A kind of high-barrier packing film is followed successively by outer layer 11, upper adhesive layer 12, high-obstruction 13, lower viscous from top to bottom
Layer 14, hot sealing layer 15 are closed, as shown in figure 3, Fig. 3 is the structural representation of high-barrier packing film prepared by the embodiment of the present invention 3
Scheme (outer layer is 5 layers, hot sealing layer is 5 layers).
The outer layer 11 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the present embodiment China and foreign countries
Layer 11 includes 5 layers, is all made of raw material EVA and PE and is made.
The upper adhesive layer 12 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The high-obstruction 13 uses raw material for ethylene-vinyl alcohol copolymer (EVOH), density range be 1.17~
1.25g/ml, it is desirable that 44% or less ethylene contents.
The lower adhesive layer 14 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The hot sealing layer 15 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), in the present embodiment
Hot sealing layer 15 includes 5 layers, is all made of raw material EVA and PE and is made.
A kind of preparation method of high-barrier packing film, comprising the following steps:
1st layer, EVA+PE (mass ratio 30:70) is added in the hopper 1 of extruder, the condition that temperature is 180-200 DEG C
Lower melting, into mouth mold；
2nd layer, EVA+PE (mass ratio 60:40) is added in the hopper 2 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
3rd layer, EVA+PE (mass ratio 30:70) is added in the hopper 3 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
4th layer, EVA+PE (mass ratio 60:40) is added in the hopper 4 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
5th layer, EVA+PE (mass ratio 30:70) is added in the hopper 5 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
Above 5 layers of composition outer layer 11；
6th layer of upper adhesive layer 12 Tie+PE (mass ratio 90:10) is added in the hopper 6 of extruder, temperature 190-
It is melted under conditions of 220 DEG C, into mouth mold；
7th layer high-barrier layer 13 EVOH is added in the hopper 7 of extruder, and temperature melts under the conditions of being 180-200 DEG C,
Into mouth mold；
8th layer of lower adhesive layer 14 Tie+PE (mass ratio 90:10) is added in the hopper 8 of extruder, temperature 190-
It is melted under the conditions of 220 DEG C, into mouth mold.
9th layer, EVA+PE (mass ratio 30:70) is added in the hopper 9 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
10th layer, EVA+PE (mass ratio 60:40) is added in the hopper 10 of extruder, the item that temperature is 160-190 DEG C
It is melted under part, into mouth mold；
11th layer EVA+PE (mass ratio 30:70) is added in the hopper 11 of extruder, and temperature is 175-215 DEG C of condition
Lower melting, into mouth mold；
12nd layer, EVA+PE (mass ratio 60:40) is added in the hopper 12 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
13rd layer, EVA+PE (mass ratio 30:70) is added in the hopper 13 of extruder, temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
9~13 layers totally 5 layers constitute hot sealing layer 15；
Then by squeezing out, cooling and shaping, finally, being wound as needed with winder.
The structure of the high-barrier packing film (VOV) of acquisition are as follows: EVA+PE/EVA+PE/EVA+PE/EVA+PE/EVA+
PE/Tie+PE/EVOH/Tie+PE/EVA+PE/EVA+PE/EV A+PE/EVA+PE/EVA+PE。
A kind of preparation method of the high-barrier packing film by crosslinking Treatment, cross-linking treatment method use and penetrate processing
Mode, comprising the following steps:
Production equipment: offline EB machine is purchased from Wuxi Apong Radiation Technology Co., Ltd.
The high-barrier skin packaging film roll of preparation is put into offline EB machine by unwinding equipment, in different irradiation doses
Lower progress high-energy ray scanning irradiation carries out crosslinking Treatment, and processing voltage is 0.5Mv, and treatment dosage 17Mrad passes through cooling
Roller rolling after cooling obtains the high-barrier packing film Jing Guo crosslinking Treatment.
Embodiment 4
A kind of high-barrier packing film is followed successively by outer layer 11, upper adhesive layer 12, high-obstruction 13, lower viscous from top to bottom
Close layer 14, hot sealing layer 15.
The outer layer 11 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the present embodiment China and foreign countries
Layer 11 includes 4 layers, is all made of raw material EVA and PE and is made.
The upper adhesive layer 12 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The high-obstruction 13 uses raw material for ethylene-vinyl alcohol copolymer (EVOH), density range be 1.17~
1.25g/ml, it is desirable that 44% or less ethylene contents.
The lower adhesive layer 14 uses raw material for maleic anhydride modified polyethylene (Tie) and PE (polyethylene), maleic acid
Density of pe 0.91~0.925g/ml of range of anhydride modification, melt index (MI) are 1~5；Using Tie+PE, bonding is played
Layer effect.
The hot sealing layer 15 uses raw material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), in the present embodiment
Hot sealing layer 15 includes 4 layers, is all made of raw material EVA and PE and is made.
A kind of preparation method of high-barrier packing film, comprising the following steps:
1st layer, EVA+PE (mass ratio 30:70) is added in the hopper 1 of extruder, the condition that temperature is 180-200 DEG C
Lower melting, into mouth mold；
2nd layer, EVA+PE (mass ratio 60:40) is added in the hopper 2 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
3rd layer, EVA+PE (mass ratio 30:70) is added in the hopper 3 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
4th layer, EVA+PE (mass ratio 60:40) is added in the hopper 4 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
Above 4 layers of composition outer layer 11；
5th layer of upper adhesive layer 12 Tie+PE (mass ratio 90:10) is added in the hopper 5 of extruder, temperature 190-
It is melted under conditions of 220 DEG C, into mouth mold；
6th layer high-barrier layer 13 EVOH is added in the hopper 6 of extruder, and temperature melts under the conditions of being 180-200 DEG C,
Into mouth mold；
7th layer of lower adhesive layer 14 Tie+PE (mass ratio 90:10) is added in the hopper 7 of extruder, temperature 190-
It is melted under the conditions of 220 DEG C, into mouth mold.
8th layer, EVA+PE (mass ratio 30:70) is added in the hopper 8 of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold；
9th layer, EVA+PE (mass ratio 60:40) is added in the hopper 9 of extruder, the condition that temperature is 160-190 DEG C
Lower melting, into mouth mold；
10th layer, EVA+PE (mass ratio 30:70) is added in the hopper 10 of extruder, temperature is 175-215 DEG C of condition
Lower melting, into mouth mold；
11th layer EVA+PE (mass ratio 60:40) is added in the hopper 11 of extruder, and temperature is 160-190 DEG C of condition
Lower melting, into mouth mold；
8~11 layers totally 4 layers constitute hot sealing layer 15；
Then by squeezing out, cooling and shaping, finally, being wound as needed with winder.
The structure of the high-barrier packing film (VOV) of acquisition are as follows: EVA+PE/EVA+PE/EVA+PE/EVA+PE/Tie+
PE/EVOH/Tie+PE/EVA+PE/EVA+PE/EVA+PE/EV A+PE。
A kind of preparation method of the high-barrier packing film by crosslinking Treatment, cross-linking treatment method use and penetrate processing
Mode, comprising the following steps:
Production equipment: offline EB machine is purchased from Wuxi Apong Radiation Technology Co., Ltd.
The high-barrier skin packaging film roll of preparation is put into offline EB machine by unwinding equipment, in different irradiation doses
Lower progress high-energy ray scanning irradiation carries out crosslinking Treatment, and processing voltage is 0.5Mv, and treatment dosage 17Mrad passes through cooling
Roller rolling after cooling obtains the high-barrier packing film Jing Guo crosslinking Treatment.
High-barrier packing film prepared by embodiment 2~4 performance of product after crosslinking Treatment is as shown in table 5, table
In, MD indicates longitudinal, and TD is indicated laterally.
Table 5
From the data in table 5, it can be seen that the mechanical performance of the product of the embodiment 2~4 after crosslinking Treatment is excellent, it is of the invention
For high-barrier packing film after crosslinking Treatment appropriate, heat resistance is more preferable, and tensile strength increases.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (10)
1. a kind of high-barrier packing film, it is characterised in that: be followed successively by from top to bottom outer layer, upper adhesive layer, high-obstruction, under
Adhesive layer, hot sealing layer；
The outer layer uses raw material for the mixture of EVA and PE；
The upper adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；
The high-obstruction uses raw material for ethylene-vinyl alcohol copolymer；
The lower adhesive layer uses raw material for maleic anhydride modified polyethylene and polyethylene；
The hot sealing layer uses raw material for the mixture of EVA and PE.
2. high-barrier packing film according to claim 1, it is characterised in that: EVA in the mixture of the EVA and PE
Mass ratio with PE is 20:80~80:20.
3. high-barrier packing film according to claim 2, it is characterised in that: the outer layer is 1~5 layer.
4. high-barrier packing film according to claim 3, it is characterised in that: the outer layer is 1,3,4,5 layer.
5. high-barrier packing film according to claim 1, it is characterised in that: the maleic anhydride modified polyethylene
0.91~0.925g/ml of density range, melt index are 1~5；
The mass ratio of maleic anhydride modified polyethylene and polyethylene is 10:90~90 in the upper adhesive layer, lower adhesive layer:
10。
6. high-barrier packing film according to claim 1, it is characterised in that: the ethylene-vinyl alcohol copolymer
Density range is 1.17~1.25g/ml, it is desirable that 44% or less ethylene contents.
7. high-barrier packing film according to claim 1, it is characterised in that: the hot sealing layer is 1~5 layer.
8. high-barrier packing film according to claim 7, it is characterised in that: the hot sealing layer is 1,3,4,5 layer.
9. a kind of preparation method of the described in any item high-barrier packing films of claim 1 to 8, it is characterised in that: including
Following steps:
Outer layer the mixture of EVA and PE is added in the hopper of extruder, and temperature melts under conditions of being 160-200 DEG C, enters
Mouth mold；
Upper adhesive layer the mixture of Tie and PE is added in the hopper of extruder, and temperature melts under conditions of being 190-220 DEG C,
Into mouth mold；
High-obstruction EVOH is added in the hopper of extruder, and temperature melts under the conditions of being 180-200 DEG C, into mouth mold；
Lower adhesive layer the mixture of Tie and PE is added in the hopper of extruder, and temperature melts under the conditions of being 190-220 DEG C, into
Enter mouth mold；
Hot sealing layer 15 mixture of EVA and PE is added in the hopper of extruder, and temperature melts under the conditions of being 160-215 DEG C, into
Enter mouth mold；
Then by squeezing out, cooling and shaping obtains the high-barrier packing film.
10. a kind of preparation method of the high-barrier packing film by crosslinking Treatment, it is characterised in that: the following steps are included:
By the described in any item high-barrier skin packaging film rolls of claim 1 to 8 by unreeling, under different irradiation doses into
The scanning irradiation of row high-energy ray carries out crosslinking Treatment, and processing voltage is 0.1-100Mv, and treatment dosage 8-22Mrad is passed through
Cross the high-barrier packing film of crosslinking Treatment.
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| CN110722856A (en) * | 2019-10-22 | 2020-01-24 | 江阴升辉包装材料有限公司 | Puncture-resistant composite shrink film for refrigeration and preservation |
| CN110803388A (en) * | 2019-12-03 | 2020-02-18 | 江阴升辉包装材料有限公司 | Outer bag film of personal care product and packaging bag thereof |
| CN110901194A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | High-strength high-barrier pure water packaging film and electronic crosslinking treatment method thereof |
| CN110901195A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Personal care product outer bag film and preparation method thereof |
| CN110901193A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Pure water packaging film convenient to recycle and crosslinking treatment method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110722856A (en) * | 2019-10-22 | 2020-01-24 | 江阴升辉包装材料有限公司 | Puncture-resistant composite shrink film for refrigeration and preservation |
| CN110803388A (en) * | 2019-12-03 | 2020-02-18 | 江阴升辉包装材料有限公司 | Outer bag film of personal care product and packaging bag thereof |
| CN110901194A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | High-strength high-barrier pure water packaging film and electronic crosslinking treatment method thereof |
| CN110901195A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Personal care product outer bag film and preparation method thereof |
| CN110901193A (en) * | 2019-12-03 | 2020-03-24 | 江阴升辉包装材料有限公司 | Pure water packaging film convenient to recycle and crosslinking treatment method thereof |
| CN112677611A (en) * | 2020-12-31 | 2021-04-20 | 江阴升辉包装材料有限公司 | High-transparency recyclable low-temperature-resistant sheet and preparation method thereof |
| CN112677611B (en) * | 2020-12-31 | 2024-05-24 | 升辉新材料股份有限公司 | High-transparency recyclable low-temperature-resistant sheet and preparation method thereof |
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Application publication date: 20190301 |