CN109397817A - A kind of low temperature packing film without crosslinking Treatment - Google Patents
A kind of low temperature packing film without crosslinking Treatment Download PDFInfo
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- CN109397817A CN109397817A CN201811392636.XA CN201811392636A CN109397817A CN 109397817 A CN109397817 A CN 109397817A CN 201811392636 A CN201811392636 A CN 201811392636A CN 109397817 A CN109397817 A CN 109397817A
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- layer
- crosslinking treatment
- surlyn
- low temperature
- eva
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Classifications
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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
- B32B27/30—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
- B32B27/06—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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of low temperature packing films without crosslinking Treatment, from top to bottom successively are as follows: hot sealing layer, middle layer and surface layer；The middle layer uses material for Surlyn sarin material；The hot sealing layer uses material for EVA；The surface layer uses material for the mixture of EVA and PE.Low temperature packing film provided by the invention without crosslinking Treatment adds Surlyn material in middle layer, Surlyn material at low temperature toughness is good, excellent melt intensity with outstanding wear-resistant and excellent melt, to make packing film not need crosslinking Treatment, heat posted can be carried out with materials such as PET, PS, metals；And structural strength with higher can satisfy high-intensitive puncture resistance requirement, since the material used is lower melting-point material, so temperature needed for fit preheating substantially reduces.
Description
Technical field
The invention belongs to pack technical field of membrane, in particular to a kind of low temperature packing film without crosslinking Treatment.
Background technique
With the innovation of manner of packing, skin packaging becomes the upstart of packaging, therefore fit film is rapidly developed.Patch
Body film carries out cross-linking reaction by the irradiation of high-voltage electricity beamlet, to promote the physical property of fit film, while its heat resistance
It increases.But higher preheating temperature is needed using crosslinking method during skin packaging, and some packaging products need
Low-temperature prewarming is fit, is not available crosslinking packing film at this time.Therefore, it is badly in need of a kind of low-temperature prewarming skin packaging product.
Summary of the invention
The object of the present invention is to provide a kind of applied to low-temperature prewarming skin packaging product and toughness is good is not necessarily to
The low temperature packing film of crosslinking Treatment.
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 low temperature packing film without crosslinking Treatment, from top to bottom successively
Are as follows: hot sealing layer, middle layer and surface layer；The middle layer uses material for Surlyn sarin material；The hot sealing layer uses material
For EVA；The surface layer uses material for the mixture of EVA and PE.
Mass ratio range both in the mixture of the EVA and PE is 30:(40~100).
Preferably, the mass ratio both in the mixture of the EVA and PE is 30:70.
The middle layer uses material Surlyn sarin material for 1~9 layer, preferably 1,3,5,7,8,9 layer.
The second aspect of the invention provides the preparation side described in one kind without the low temperature packing film of crosslinking Treatment
Method, comprising the following steps:
1st layer i.e. hot sealing layer, EVA is added in the hopper 1 of extruder, and temperature melts under conditions of being 160-190 DEG C, into
Enter mouth mold；
2~n-layer Surlyn sarin material is added in 2~n of hopper of extruder, under the conditions of temperature is 160-190 DEG C
Melting, into mouth mold, n is 3~11；
(n+1)th layer i.e. surface layer, the mixture of EVA and PE is added in the hopper n+1 of extruder, and temperature is 180-200 DEG C
Under the conditions of melt, into mouth mold；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment.
Due to the adoption of the above technical scheme, the present invention has the following advantages and beneficial effects:
Low temperature packing film provided by the invention without crosslinking Treatment is a kind of applied to low-temperature prewarming skin packaging
Product and the good product of toughness.Low temperature packing film provided by the invention without crosslinking Treatment without crosslinking at
Reason, under the preheating condition of lower temperature, reaches fit effect, and tensile property is good.
Low temperature packing film provided by the invention without crosslinking Treatment adds Surlyn material, Surlyn in middle layer
Material at low temperature toughness is good, have it is outstanding wear-resistant and it is excellent melt it is excellent melt intensity, so that packing film be made not need to hand over
Connection processing can carry out heat posted with materials such as PET (polyethylene terephthalate), PS (polystyrene), metals；And have
There is higher structural strength, can satisfy high-intensitive puncture resistance requirement, since the material used is lower melting-point
Material, so temperature needed for fit preheating substantially reduces.
Existing fit film needs to change molecular chain structure by crosslinking Treatment, high temperature resistance is improved, to meet patch
Body effect, the low temperature packing film provided by the invention without crosslinking Treatment save crosslinking Treatment process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the low temperature packing film without crosslinking Treatment prepared by the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of the low temperature packing film without crosslinking Treatment prepared by the embodiment of the present invention 2.
Fig. 3 is the method flow without barrier packing film Jing Guo crosslinking Treatment for needing crosslinking Treatment prepared by comparative example 1
Schematic diagram.
Wherein: 11 being hot sealing layer, 12 be middle layer, 13 be surface 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.
The raw materials used in the present invention EVA (ethylene-vinyl acetate copolymer), the trade mark 3190 are purchased from E.I.Du Pont Company；Or the trade mark
For E180L, it is purchased from HanwhaTotal producer；Sarin material, trade mark Surlyn 1605, manufacturer: E.I.Du Pont Company；Surlyn
1601-2 sarin material is made of the ethylene-methacrylic acid copolymer of high-pressure free radical polymerization through partly or entirely neutralizing
A kind of copolymer, manufacturer: E.I.Du Pont Company；The PE trade mark is Q2018C, is purchased from Qatar's petrochemical industry Co., Ltd.
Embodiment 1
A kind of low temperature packing film without crosslinking Treatment, as shown in FIG. 1, FIG. 1 is nothings prepared by the embodiment of the present invention 1
Need the structural schematic diagram of the low temperature packing film of crosslinking Treatment；From top to bottom successively are as follows: hot sealing layer 11, middle layer 12 and surface layer
13, add Surlyn sarin material in middle layer, Surlyn sarin material at low temperature toughness is good, have it is outstanding wear-resistant and
It is excellent melt it is excellent melt intensity, so that packing film be made not need crosslinking Treatment, heat can be carried out with materials such as PET, PS, metals
Patch；And structural strength with higher can satisfy high-intensitive puncture resistance requirement, since the material used is molten
The lower material of point, so temperature needed for fit preheating substantially reduces.
The middle layer 12 uses material for Surlyn 1601-2 sarin material, the ethylene-first being polymerize by high-pressure free radical
Base acrylic copolymer is partly or entirely neutralized and a kind of manufactured copolymer, manufacturer: E.I.Du Pont Company.
The middle layer 12 uses material Surlyn sarin material for 1~9 layer, and preferably 1,3,5,7,8,9 layer (in this reality
It applies and selects 7 layers in example).
The hot sealing layer 11 uses material for EVA (ethylene-vinyl acetate copolymer), and trade mark E180L is purchased from
HanwhaTotal producer.
The surface layer 13 uses material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the mass ratio of the two
Example is 30:70.
A kind of preparation method of the low temperature packing film without crosslinking Treatment the following steps are included:
1st layer, EVA is added in the hopper 1 of extruder, temperature melts under conditions of being 160-190 DEG C, into mouth mold；
2nd layer, Surlyn sarin material being added in the hopper 2 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
3rd layer, Surlyn sarin material being added in the hopper 3 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
4th layer, Surlyn sarin material is added in the hopper 4 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
5th layer, Surlyn sarin material being added in the hopper 5 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
6th layer, Surlyn sarin material being added in the hopper 6 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold.
7th layer, Surlyn sarin material being added in the hopper 7 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
8th layer, Surlyn sarin material is added in the hopper 8 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
9th layer, EVA+PE (mass ratio is 30:70) is added in the hopper 9 of extruder, temperature is 180-200 DEG C of condition
Lower melting, into mouth mold；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment, finally, as needed
It is wound with winder.
The present embodiment adds 7 layers of structure containing Surlyn sarin material in the intermediate layer, can greatly improve structure
Intensity improves its puncture resistance.
Comparative example 1
Need the structure without barrier packing film (VEV) of crosslinking Treatment are as follows: EVA+PE/EVA+PE/EVA+PE/EVA+
PE/EVA+PE/EVA+PE/EVA+PE/EVA+PE/EVA+PE。
Need the preparation method without barrier packing film (VEV) of crosslinking Treatment, 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.As shown in figure 3, Fig. 3 is comparative example 1
The method flow schematic diagram without barrier packing film Jing Guo crosslinking Treatment for needing crosslinking Treatment of preparation.
Table 1 is that the low temperature packing film without crosslinking Treatment prepared by the embodiment of the present invention 1 adds Surlyn material
The VEV for being not added with Surlyn material that is prepared without crosslinking Treatment and comparative example 1 of low temperature packing film (VEV) by handing over
Join the packing film of processing tensile property and puncture can contrast and experiment, in table, MD indicates longitudinal, and TD is indicated
Laterally.
Table 1
The testing standard method of tensile strength is ASTM D882, and the testing standard method of punctured resistance is ASTM
D882.The product that test data can be seen that the product of the preparation of embodiment 1 from table 1 and prepared by comparative example 1 is on tensile property
Very close on puncture resistance, product prepared by embodiment 1 is more preferable, and main is that temperature required for preheating substantially reduces.
Embodiment 2
A kind of low temperature packing film without crosslinking Treatment, as shown in Fig. 2, Fig. 2 is nothing prepared by the embodiment of the present invention 2
The structural schematic diagram of the low temperature packing film of crosslinking Treatment is needed, from top to bottom successively are as follows: hot sealing layer 11, middle layer 12 and surface layer
13；
The middle layer 12 uses material for Surlyn sarin material, the ethylene-metering system being polymerize by high-pressure free radical
Acid copolymer is partly or entirely neutralized and a kind of manufactured copolymer, manufacturer: E.I.Du Pont Company.
The middle layer 12 uses material Surlyn sarin material for 1~9 layer, and preferably 1,3,5,7,8,9 layer (in this reality
It applies and selects 8 layers in example).
The hot sealing layer 11 uses material for EVA (ethylene-vinyl acetate copolymer), and trade mark E180L is purchased from
HanwhaTotal producer.
The surface layer 13 uses material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the mass ratio of the two
Example is 30:40.
A kind of preparation method of the low temperature packing film without crosslinking Treatment the following steps are included:
1st layer, EVA is added in the hopper 1 of extruder, temperature melts under conditions of being 160-190 DEG C, into mouth mold；
2nd layer, Surlyn sarin material being added in the hopper 2 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
3rd layer, Surlyn sarin material being added in the hopper 3 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
4th layer, Surlyn sarin material is added in the hopper 4 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
5th layer, Surlyn sarin material being added in the hopper 5 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
6th layer, Surlyn sarin material being added in the hopper 6 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold.
7th layer, Surlyn sarin material being added in the hopper 7 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
8th layer, Surlyn sarin material is added in the hopper 8 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
9th layer, Surlyn sarin material is added in the hopper 9 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
10th layer, EVA+PE is added in the hopper 10 of extruder, temperature melts under the conditions of being 180-200 DEG C, inlet port
Mould；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment, finally, as needed
It is wound with winder.
The present embodiment adds 8 layers of structure containing Surlyn material in the intermediate layer, can greatly improve structural strength,
Improve its puncture resistance.
Embodiment 3
A kind of low temperature packing film without crosslinking Treatment, from top to bottom successively are as follows: hot sealing layer 11, middle layer 12 and table
Layer 13；
The middle layer 12 uses material for Surlyn sarin material, the ethylene-metering system being polymerize by high-pressure free radical
Acid copolymer is partly or entirely neutralized and a kind of manufactured copolymer, manufacturer: E.I.Du Pont Company.
The middle layer 12 uses material Surlyn sarin material for 1~9 layer, and preferably 1,3,5,7,8,9 layer (in this reality
It applies and selects 3 layers in example).
The hot sealing layer 11 uses material for EVA (ethylene-vinyl acetate copolymer), and trade mark E180L is purchased from
HanwhaTotal producer.
The surface layer 13 uses material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the mass ratio of the two
Example is 30:100.
A kind of preparation method of the low temperature packing film without crosslinking Treatment the following steps are included:
1st layer, EVA is added in the hopper 1 of extruder, temperature melts under conditions of being 160-190 DEG C, into mouth mold；
2nd layer, Surlyn sarin material being added in the hopper 2 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
3rd layer, Surlyn sarin material being added in the hopper 3 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
4th layer, Surlyn sarin material is added in the hopper 4 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
5th layer, EVA+PE is added in the hopper 5 of extruder, temperature melts under the conditions of being 180-200 DEG C, into mouth mold；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment, finally, as needed
It is wound with winder.
The present embodiment adds 3 layers of structure containing Surlyn material in the intermediate layer, can greatly improve structural strength,
Improve its puncture resistance.
Embodiment 4
A kind of low temperature packing film without crosslinking Treatment, from top to bottom successively are as follows: hot sealing layer 11, middle layer 12 and table
Layer 13；
The middle layer 12 uses material for Surlyn sarin material, the ethylene-metering system being polymerize by high-pressure free radical
Acid copolymer is partly or entirely neutralized and a kind of manufactured copolymer, manufacturer: E.I.Du Pont Company.
The middle layer 12 uses material Surlyn sarin material for 1~9 layer, and preferably 1,3,5,7,8,9 layer (in this reality
It applies and selects 9 layers in example).
The hot sealing layer 11 uses material for EVA (ethylene-vinyl acetate copolymer), and trade mark E180L is purchased from
HanwhaTotal producer.
The surface layer 13 uses material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the mass ratio of the two
Example is 30:70.
A kind of preparation method of the low temperature packing film without crosslinking Treatment the following steps are included:
1st layer, EVA is added in the hopper 1 of extruder, temperature melts under conditions of being 160-190 DEG C, into mouth mold；
2nd layer, Surlyn sarin material being added in the hopper 2 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
3rd layer, Surlyn sarin material being added in the hopper 3 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
4th layer, Surlyn sarin material is added in the hopper 4 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
5th layer, Surlyn sarin material being added in the hopper 5 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
6th layer, Surlyn sarin material being added in the hopper 6 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold.
7th layer, Surlyn sarin material being added in the hopper 7 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
8th layer, Surlyn sarin material is added in the hopper 8 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
9th layer, Surlyn sarin material is added in the hopper 9 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
10th layer, Surlyn sarin material is added in the hopper 10 of extruder, temperature melts under conditions of being 160-190 DEG C
Melt, into mouth mold；
11th layer EVA+PE is added in the hopper 11 of extruder, and temperature melts under the conditions of being 180-200 DEG C, inlet port
Mould；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment, finally, as needed
It is wound with winder.
The present embodiment adds 9 layers of structure containing Surlyn material in the intermediate layer, can greatly improve structural strength,
Improve its puncture resistance.
Embodiment 5
A kind of low temperature packing film without crosslinking Treatment, from top to bottom successively are as follows: hot sealing layer 11, middle layer 12 and table
Layer 13；
The middle layer 12 uses material for Surlyn sarin material, the ethylene-metering system being polymerize by high-pressure free radical
Acid copolymer is partly or entirely neutralized and a kind of manufactured copolymer, manufacturer: E.I.Du Pont Company.
The middle layer 12 uses material Surlyn sarin material for 1~9 layer, and preferably 1,3,5,7,8,9 layer (in this reality
It applies and selects 1 layer in example).
The hot sealing layer 11 uses material for EVA (ethylene-vinyl acetate copolymer), and trade mark E180L is purchased from
HanwhaTotal producer.
The surface layer 13 uses material for EVA (ethylene-vinyl acetate copolymer) and PE (polyethylene), the mass ratio of the two
Example is 30:70.
A kind of preparation method of the low temperature packing film without crosslinking Treatment the following steps are included:
1st layer, EVA is added in the hopper 1 of extruder, temperature melts under conditions of being 160-190 DEG C, into mouth mold；
2nd layer, Surlyn sarin material being added in the hopper 2 of extruder, temperature melts under the conditions of being 160-190 DEG C,
Into mouth mold；
3rd layer, EVA+PE is added in the hopper 3 of extruder, temperature melts under the conditions of being 180-200 DEG C, into mouth mold；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment, finally, as needed
It is wound with winder.
The present embodiment adds 1 layer of structure containing Surlyn material in the intermediate layer, can greatly improve structural strength,
Improve its puncture resistance.
Then the product prepared to embodiment 2~5 is tested for the property, as shown in table 2, the testing standard side of tensile strength
Method is ASTM D882, and the testing standard method of punctured resistance is ASTM D882, and in table, MD indicates longitudinal, and TD is indicated laterally.
Table 2
It can be seen from the data in Table 2 that the embodiment of the present invention 2~5 prepare product performance compared with comparative example 1,
Under the premise of physical property is not much different, preheating temperature is greatly reduced, meets the fit requirement of low temperature of client.
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 (6)
1. a kind of low temperature packing film without crosslinking Treatment, it is characterised in that: from top to bottom successively are as follows: hot sealing layer, centre
Layer and surface layer；The middle layer uses material for Surlyn sarin material；The hot sealing layer uses material for EVA；The surface layer
Use material for the mixture of EVA and PE.
2. the low temperature packing film according to claim 1 without crosslinking Treatment, it is characterised in that: the EVA and PE
Mixture in both mass ratio range be 30:(40~100).
3. the low temperature packing film according to claim 2 without crosslinking Treatment, it is characterised in that: the EVA and PE
Mixture in both mass ratio be 30:70.
4. the low temperature packing film according to claim 1 without crosslinking Treatment, it is characterised in that: the middle layer is adopted
It is 1~9 layer with material Surlyn sarin material.
5. the low temperature packing film according to claim 4 without crosslinking Treatment, it is characterised in that: the middle layer is adopted
It is 1,3,5,7,8,9 layer with material Surlyn sarin material.
6. a kind of preparation method of the low temperature packing film described in any one of claim 1 to 5 without crosslinking Treatment, special
Sign is: the following steps are included:
1st layer i.e. hot sealing layer, EVA is added in the hopper 1 of extruder, and temperature melts under conditions of being 160-190 DEG C, inlet port
Mould；
2~n-layer Surlyn sarin material is added in 2~n of hopper of extruder, and temperature melts under the conditions of being 160-190 DEG C
Melt, into mouth mold, n is 3~11；
(n+1)th layer i.e. surface layer, the mixture of EVA and PE is added in the hopper n+1 of extruder, and temperature is 180-200 DEG C of condition
Lower melting, into mouth mold；
Then by squeezing out, cooling and shaping obtains the low temperature packing film for being not necessarily to crosslinking Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392636.XA CN109397817A (en) | 2018-11-21 | 2018-11-21 | A kind of low temperature packing film without crosslinking Treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392636.XA CN109397817A (en) | 2018-11-21 | 2018-11-21 | A kind of low temperature packing film without crosslinking Treatment |
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| Publication Number | Publication Date |
|---|---|
| CN109397817A true CN109397817A (en) | 2019-03-01 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202412842U (en) * | 2011-12-30 | 2012-09-05 | 上海唐科新型包装材料有限公司 | Low-temperature heat-sealing barrier membrane |
| CN204249480U (en) * | 2014-06-30 | 2015-04-08 | 江阴升辉包装材料有限公司 | Chilled meat packaging heat shrink films |
| CN107627686A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film of high puncturing resistance |
-
2018
- 2018-11-21 CN CN201811392636.XA patent/CN109397817A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202412842U (en) * | 2011-12-30 | 2012-09-05 | 上海唐科新型包装材料有限公司 | Low-temperature heat-sealing barrier membrane |
| CN204249480U (en) * | 2014-06-30 | 2015-04-08 | 江阴升辉包装材料有限公司 | Chilled meat packaging heat shrink films |
| CN107627686A (en) * | 2017-08-07 | 2018-01-26 | 江阴升辉包装材料有限公司 | A kind of vacuum skin packaging film of high puncturing resistance |
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Application publication date: 20190301 |
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