CN110406224A - Cross-linked polyolefin heat shrink films and preparation method thereof with good impressionability energy - Google Patents
Cross-linked polyolefin heat shrink films and preparation method thereof with good impressionability energy Download PDFInfo
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- 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
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- 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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- 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
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
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- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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Abstract
The present invention provides a kind of cross-linked polyolefin heat shrink films and preparation method thereof with good impressionability energy.Cross-linked polyolefin heat shrink films with good impressionability energy, including the outer layer, sandwich layer and internal layer stacked gradually.The preparation method of the cross-linked polyolefin heat shrink films with good impressionability energy: fusion plastification is distinguished after each layer raw material is mixed in proportion, layer, which is closed, subsequently into multilayer parallel conical mould head co-extrusion obtains multilayer melt, the multilayer melt is inflated to obtain film bubble, and then cooling and shaping obtains multilayer inflation membrane tube；The multilayer inflation membrane tube finally carries out thermal finalization processing and cooling through exhaust, cross-linking radiation processing, then transverse and longitudinal synchro-draw cooling using heating, sizing, and flattening, trimming, sided corona treatment, winding obtain the cross-linked polyolefin and be heat-shrinked Coloured film.Cross-linked polyolefin heat shrink films provided by the present application with good impressionability energy, surface tension are stablized, and have good impressionability energy.
Description
Technical field
The present invention relates to Polyolefin Heat Shrinkable Film fields, in particular to a kind of friendship with good impressionability energy
Join Polyolefin Heat Shrinkable Film and preparation method thereof.
Background technique
Polyolefin Heat Shrinkable Film is a kind of packaging material that market prospects are boundless.With the continuous expansion of packing instructions
Exhibition, a kind of Polyolefin Heat Shrinkable Film that can be good at being printed become the very big product of market demand.
The existing Polyolefin Heat Shrinkable Film for surface printing, with the extension of time, its surface tension with just under
The film of line is compared, it may occur that very big decline is no longer desirable for printing.Develop a kind of polyolefin that surface tension is stable thermal contraction
Film becomes the hot topic of research and development.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of cross-linked polyolefin heat shrink films with good impressionability energy, table
Face tension stability has good impressionability energy.
The second object of the present invention is to provide a kind of preparation method of cross-linked polyolefin thermal contraction Coloured film, technique letter
Single, surface tension is stablized.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
It is a kind of with good impressionability can cross-linked polyolefin heat shrink films, including stack gradually outer layer, sandwich layer and
Internal layer,
The outer layer, raw material is by percentage to the quality, comprising: LDPE55-65%, mLDPE20-35%, maleic anhydride
Modified poly ethylene 5-10%, silicone resist blocking and that master batch 1-5%；
The sandwich layer, raw material is by percentage to the quality, comprising: LDPE60-70%, mLDPE15-25%, erucyl amide
Smooth master batch 1-10% and N,N methylene bis acrylamide cross-linked evocating agent master batch 3-5%；
The internal layer, raw material is by percentage to the quality, comprising: LDPE60-65%, mLDPE30-35%, silicone are anti-stick
Even master batch 1-5%.
Preferably, 2.16kg pressure, under the conditions of 190 DEG C, the melt index of the outer layer and the LDPE in the internal layer are equal
For 0.5-1.0g/10min, the melt index of the LDPE in the sandwich layer is 1.0-1.5g/10min, the outer layer, the sandwich layer
Melt index with the mLDPE in the internal layer is 1.0-1.5g/10min.
Preferably, 2.16kg pressure, under the conditions of 190 DEG C, the melting of the maleic anhydride modified polyethylene in the outer layer refers to
Number is 1-5g/10min.
Preferably, the cross-linked polyolefin heat shrink films with good impressionability energy, with a thickness of 10-40 μm.
Optionally, the surface tension on surface of the outer layer far from the sandwich layer is greater than 38 dynes.
A kind of preparation method of the cross-linked polyolefin heat shrink films with good impressionability energy, including following step
It is rapid:
Fusion plastification is distinguished after each layer raw material is mixed in proportion, is closed layer subsequently into multilayer parallel conical mould head co-extrusion and is obtained
To multilayer melt, the multilayer melt is inflated to obtain film bubble, and then cooling and shaping obtains multilayer inflation membrane tube；
The multilayer inflation membrane tube is through exhaust, cross-linking radiation processing, and cooling using heating, sizing, then transverse and longitudinal is same
Step stretches, and finally carries out thermal finalization processing and cooling, and flattening, trimming, sided corona treatment, winding obtain the cross-linked polyolefin heat and receive
Contracting Coloured film.
Preferably, the temperature of the screw extruder is 150-200 DEG C；The temperature of membrane tube is 80-120 after the heating
℃；The temperature of the thermal finalization processing is 65-85 DEG C.
Preferably, the film interlabial gap of the multilayer parallel conical mould head is 1.0-2.5mm.
Preferably, the cross-linking radiation processing is carried out using electron irradiation crosslinking apparatus, the electron irradiation crosslinking apparatus
Accelerator energy be 0.5-1.2MeV, electronic beam current 0.5-40mA.
Optionally, the sizing is cooling uses three-level cooling air ring；In the three-level cooling air ring, three-level vane air quantity is
600-800m3/ h, second level vane air quantity are 1000-2000m3/ h, level-one vane air quantity are 1000-2000m3/h。
Compared with prior art, the invention has the benefit that
(1) the cross-linked polyolefin heat shrink films provided by the present application with good impressionability energy, surface tension are stablized, tool
There is good impressionability energy；
(2) preparation method of the cross-linked polyolefin heat shrink films provided by the present application with good impressionability energy, obtains
With good impressionability can cross-linked polyolefin heat shrink films surface tension stablize.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
Embodiment 1
Raw material preparation:
Outer layer:
65wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
20wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
10wt% horse Lay anhydride modified lldpe (2.16kg pressure, melt index is 2g/10min at 190 DEG C)
5wt% silicone resist blocking and that master batch；
Sandwich layer:
70wt%LDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
20wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
The smooth master batch of 6wt% erucyl amide
4wt%N, N- methylene-bisacrylamide cross-linked evocating agent master batch；
Internal layer:
65wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
30wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
5wt% silicone resist blocking and that master batch.
Preparation process:
Screw extruder fusion plastification is used after each layer raw material is mixed in proportion respectively, the temperature of screw extruder is 150
℃；Obtained melt enters multilayer parallel conical mould head co-extrusion conjunction layer and obtains multilayer melt, the film lip of multilayer parallel conical mould head
Gap is 1.0mm；Four sections of temperature controlled regions are arranged in multilayer parallel conical mould head, and the temperature setting range in each area is 180 DEG C；
Multilayer melt is inflated to obtain film bubble, using ultrasonic sensor reflect induction film bubble size come control inner gas pressure with
Reach required vesicle diameter, then cooling and shaping obtains multilayer inflation membrane tube；
Multilayer inflation membrane tube through exhaust obtain smooth membrane tube, subsequently into electron irradiation crosslinking apparatus line output window into
The processing of row cross-linking radiation, the accelerator energy of electron irradiation crosslinking apparatus are 0.8MeV, electronic beam current 10mA；It enters back into remote red
Outer enamel oven heating, the temperature of membrane tube is 85 DEG C after heating；
Continuing sizing to cool down, sizing, which cools down, uses three-level cooling air ring, in three-level cooling air ring, three-level vane air quantity
For 800m3/ h, second level vane air quantity are 1200m3/ h, level-one vane air quantity are 1800m3/h；Then transverse and longitudinal synchro-draw, most
Thermal finalization processing is carried out under the conditions of 85 DEG C afterwards, then cool down, flatten, trimming, then sided corona treatment, winding obtain 10 μ m-thicks
With good impressionability can cross-linked polyolefin heat shrink films.
Embodiment 2
Outer layer:
58.5wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
35wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
5wt% horse Lay anhydride modified lldpe (2.16kg pressure, melt index is 2g/10min at 190 DEG C)
1.5wt% silicone resist blocking and that master batch；
Sandwich layer:
60wt%LDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
25wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
The smooth master batch of 10wt% erucyl amide
5wt%N, N- methylene-bisacrylamide cross-linked evocating agent master batch；
Internal layer:
63.5wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
35wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
1.5wt% silicone resist blocking and that master batch.
Preparation process:
Screw extruder fusion plastification is used after each layer raw material is mixed in proportion respectively, the temperature of screw extruder is 180
℃；Obtained melt enters multilayer parallel conical mould head co-extrusion conjunction layer and obtains multilayer melt, the film lip of multilayer parallel conical mould head
Gap is 1.0mm；Four sections of temperature controlled regions are arranged in multilayer parallel conical mould head, and the temperature setting range in each area is 190 DEG C；
Multilayer melt is inflated to obtain film bubble, using ultrasonic sensor reflect induction film bubble size come control inner gas pressure with
Reach required vesicle diameter, then cooling and shaping obtains multilayer inflation membrane tube；
Multilayer inflation membrane tube through exhaust obtain smooth membrane tube, subsequently into electron irradiation crosslinking apparatus line output window into
The processing of row cross-linking radiation, the accelerator energy of electron irradiation crosslinking apparatus are 1.0MeV, electronic beam current 20mA；It enters back into remote red
Outer enamel oven heating, the temperature of membrane tube is 105 DEG C after heating；
Continuing sizing to cool down, sizing, which cools down, uses three-level cooling air ring, in three-level cooling air ring, three-level vane air quantity
For 600m3/ h, second level vane air quantity are 2000m3/ h, level-one vane air quantity are 2000m3/h；Then transverse and longitudinal synchro-draw, most
Thermal finalization processing is carried out under the conditions of 65 DEG C afterwards, then cool down, flatten, trimming, then sided corona treatment, winding obtain 30 μ m-thicks
With good impressionability can cross-linked polyolefin heat shrink films.
Embodiment 3
Outer layer:
65wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
24wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
7wt% horse Lay anhydride modified lldpe (2.16kg pressure, melt index is 2g/10min at 190 DEG C)
4wt% silicone resist blocking and that master batch；
Sandwich layer:
65wt%LDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
20wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
The smooth master batch of 10wt% erucyl amide
5wt%N, N- methylene-bisacrylamide cross-linked evocating agent master batch；
Internal layer:
61.5wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
34wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
4.5wt% silicone resist blocking and that master batch.
Preparation process:
Screw extruder fusion plastification is used after each layer raw material is mixed in proportion respectively, the temperature of screw extruder is 190
℃；Obtained melt enters multilayer parallel conical mould head co-extrusion conjunction layer and obtains multilayer melt, the film lip of multilayer parallel conical mould head
Gap is 1mm；Four sections of temperature controlled regions are arranged in multilayer parallel conical mould head, and the temperature setting range in each area is 195 DEG C；
Multilayer melt is inflated to obtain film bubble, using ultrasonic sensor reflect induction film bubble size come control inner gas pressure with
Reach required vesicle diameter, then cooling and shaping obtains multilayer inflation membrane tube；
Multilayer inflation membrane tube through exhaust obtain smooth membrane tube, subsequently into electron irradiation crosslinking apparatus line output window into
The processing of row cross-linking radiation, the accelerator energy of electron irradiation crosslinking apparatus are 1.0MeV, electronic beam current 10mA；It enters back into remote red
Outer enamel oven heating, the temperature of membrane tube is 100 DEG C after heating；
Continuing sizing to cool down, sizing, which cools down, uses three-level cooling air ring, in three-level cooling air ring, three-level vane air quantity
For 650m3/ h, second level vane air quantity are 1000m3/ h, level-one vane air quantity are 1000m3/h；Then transverse and longitudinal synchro-draw, most
Thermal finalization processing is carried out under the conditions of 70 DEG C afterwards, then cool down, flatten, trimming, then sided corona treatment, winding obtain 20 μ m-thicks
With good impressionability can cross-linked polyolefin heat shrink films.
Embodiment 4
Outer layer:
62wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
30wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
6wt% horse Lay anhydride modified lldpe (2.16kg pressure, melt index is 2g/10min at 190 DEG C)
2wt% silicone resist blocking and that master batch；
Sandwich layer:
68wt%LDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
25wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
The smooth master batch of 4wt% erucyl amide
3wt%N, N- methylene-bisacrylamide cross-linked evocating agent master batch；
Internal layer:
65wt%LDPE (2.16kg pressure, melt index is 0.5g/10min at 190 DEG C)
34wt%mLDPE (2.16kg pressure, melt index is 1.5g/10min at 190 DEG C)
1wt% silicone resist blocking and that master batch.
Preparation process:
Screw extruder fusion plastification is used after each layer raw material is mixed in proportion respectively, the temperature of screw extruder is 200
℃；Obtained melt enters multilayer parallel conical mould head co-extrusion conjunction layer and obtains multilayer melt, the film lip of multilayer parallel conical mould head
Gap is 1.0mm；Four sections of temperature controlled regions are arranged in multilayer parallel conical mould head, and the temperature setting range in each area is 200 DEG C；
Multilayer melt is inflated to obtain film bubble, using ultrasonic sensor reflect induction film bubble size come control inner gas pressure with
Reach required vesicle diameter, then cooling and shaping obtains multilayer inflation membrane tube；
Multilayer inflation membrane tube through exhaust obtain smooth membrane tube, subsequently into electron irradiation crosslinking apparatus line output window into
The processing of row cross-linking radiation, the accelerator energy of electron irradiation crosslinking apparatus are 1.0MeV, electronic beam current 20mA；It enters back into remote red
Outer enamel oven heating, the temperature of membrane tube is 105 DEG C after heating；
Continuing sizing to cool down, sizing, which cools down, uses three-level cooling air ring, in three-level cooling air ring, three-level vane air quantity
For 600m3/ h, second level vane air quantity are 1000m3/ h, level-one vane air quantity are 2000m3/h；Then transverse and longitudinal synchro-draw, most
Thermal finalization processing is carried out under the conditions of 60 DEG C afterwards, then cool down, flatten, trimming, then sided corona treatment, winding obtain 40 μ m-thicks
With good impressionability can cross-linked polyolefin heat shrink films.
Comparative example 1
Compared with Example 1, difference is, the slipping agent of 1-3% is added in outer layer.
Comparative example 2
Compared with Example 2, difference is, outer layer is free of maleic anhydride modified polyethylene.
Comparative example 3
Compared with Example 3, difference is, outer layer is free of surfactant type antistatic agent functional master batches.Comparative example 4
Compared with Example 4, difference is, without sided corona treatment.
Comparative example 5
Compared with Example 1, difference is, handles without thermal finalization.
Comparative example 6
Compared with Example 2, difference is, sandwich layer is free of the smooth master batch of erucyl amide.
Comparative example 7
Compared with Example 3, difference is, internal layer is free of silicone resist blocking and that master batch.
The performance for the Polyolefin Heat Shrinkable Film that testing example 1-4 and comparative example 1-7 are obtained, as a result as shown in table 1 below:
1 test result of table
By upper table data it is found that outer composition, sided corona treatment and thermal finalization processing can generate larger shadow to surface tension
It rings.The ingredient of sandwich layer and internal layer has an impact the stability of surface tension.
Cross-linked polyolefin heat shrink films provided by the present application with good impressionability energy, can guarantee good surface
Tension stability has good impressionability energy.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of cross-linked polyolefin heat shrink films with good impressionability energy, which is characterized in that outer including what is stacked gradually
Layer, sandwich layer and internal layer,
The outer layer, raw material is by percentage to the quality, comprising: LDPE55-65%, mLDPE20-35%, maleic anhydride modified
Polyethylene 5-10%, silicone resist blocking and that master batch 1-5%；
The sandwich layer, raw material is by percentage to the quality, comprising: LDPE60-70%, mLDPE15-25%, erucyl amide are smooth
Master batch 1-10% and N,N methylene bis acrylamide cross-linked evocating agent master batch 3-5%；
The internal layer, raw material is by percentage to the quality, comprising: LDPE60-65%, mLDPE30-35%, silicone resist blocking and that are female
Grain 1-5%.
2. the cross-linked polyolefin heat shrink films according to claim 1 with good impressionability energy, which is characterized in that
2.16kg pressure, under the conditions of 190 DEG C, the melt index of the outer layer and the LDPE in the internal layer are 0.5-1.0g/
The melt index of 10min, the LDPE in the sandwich layer are 1.0-1.5g/10min, the outer layer, the sandwich layer and the internal layer
In the melt index of mLDPE be 1.0-1.5g/10min.
3. the cross-linked polyolefin heat shrink films according to claim 1 with good impressionability energy, which is characterized in that
2.16kg pressure, under the conditions of 190 DEG C, the melt index of the maleic anhydride modified polyethylene in the outer layer is 1-5g/10min.
4. the cross-linked polyolefin heat shrink films according to claim 1 with good impressionability energy, which is characterized in that thick
Degree is 10-40 μm.
5. the cross-linked polyolefin heat shrink films according to claim 1-4 with good impressionability energy, special
Sign is that the surface tension on surface of the outer layer far from the sandwich layer is greater than 38 dynes.
6. a kind of preparation of the described in any item cross-linked polyolefin heat shrink films with good impressionability energy of claim 1-5
Method, which comprises the following steps:
Fusion plastification is distinguished after each layer raw material is mixed in proportion, is obtained subsequently into multilayer parallel conical mould head co-extrusion conjunction layer more
Layer melt, the multilayer melt are inflated to obtain film bubble, and then cooling and shaping obtains multilayer inflation membrane tube；
The multilayer inflation membrane tube is through exhaust, cross-linking radiation processing, and cooling using heating, sizing, then transverse and longitudinal is synchronous draws
It stretches, finally carries out thermal finalization processing and cooling, flattening, trimming, sided corona treatment, winding obtain the cross-linked polyolefin and are heat-shrinked to have
Color film.
7. preparation method according to claim 6, which is characterized in that the temperature of the screw extruder is 150-200 DEG C；
The temperature of membrane tube is 80-120 DEG C after the heating；The temperature of the thermal finalization processing is 65-85 DEG C.
8. preparation method according to claim 6, which is characterized in that the film interlabial gap of the multilayer parallel conical mould head is
1.0-2.5mm。
9. preparation method according to claim 6, which is characterized in that the cross-linking radiation processing is crosslinked using electron irradiation
Device carries out, and the accelerator energy of the electron irradiation crosslinking apparatus is 0.5-1.2MeV, electronic beam current 0.5-40mA.
10. according to the described in any item preparation methods of claim 6-9, which is characterized in that the sizing is cooling cold using three-level
But vane；In the three-level cooling air ring, three-level vane air quantity is 600-800m3/ h, second level vane air quantity are 1000-2000m3/
H, level-one vane air quantity is 1000-2000m3/h。
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| CN111114068A (en) * | 2019-12-13 | 2020-05-08 | 宁波市付枫塑业有限公司 | Environment-friendly clothing packaging film and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000336309A (en) * | 1999-06-01 | 2000-12-05 | Teijin Ltd | Polyester film readily adherent to ink image receiving layer |
| CN108516212A (en) * | 2018-03-30 | 2018-09-11 | 浙江众成包装材料股份有限公司 | A kind of multi-layer co-extruded low temperature polyolefin crosslinking heat shrink films and preparation method thereof |
-
2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000336309A (en) * | 1999-06-01 | 2000-12-05 | Teijin Ltd | Polyester film readily adherent to ink image receiving layer |
| CN108516212A (en) * | 2018-03-30 | 2018-09-11 | 浙江众成包装材料股份有限公司 | A kind of multi-layer co-extruded low temperature polyolefin crosslinking heat shrink films and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114068A (en) * | 2019-12-13 | 2020-05-08 | 宁波市付枫塑业有限公司 | Environment-friendly clothing packaging film and preparation method thereof |
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