CN110497677A - A kind of co-extruding biaxial stretched packing film - Google Patents
A kind of co-extruding biaxial stretched packing film Download PDFInfo
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- CN110497677A CN110497677A CN201910685826.9A CN201910685826A CN110497677A CN 110497677 A CN110497677 A CN 110497677A CN 201910685826 A CN201910685826 A CN 201910685826A CN 110497677 A CN110497677 A CN 110497677A
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber 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
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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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/16—Layered products comprising a layer of natural or synthetic rubber comprising polydienes homopolymers or poly-halodienes homopolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
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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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- 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
- B32B2270/00—Resin or rubber layer containing a blend of at least two different 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/406—Bright, glossy, shiny surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/412—Transparent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
Abstract
The present invention provides a kind of co-extruding biaxial stretched packing film, includes at least sandwich layer and hot sealing layer；The sandwich layer includes mass fraction for 60% ~ 80% ultra-high molecular weight polyethylene, the C9 resin that mass fraction is 20% ~ 40%, and extruded bidirectional drawing and forming is sandwich layer after the ultra-high molecular weight polyethylene and C9 resin alloy；The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 60% ~ 70%, C5 resin that mass fraction is 25% ~ 35%, the silicone resin that mass fraction is 3% ~ 6%, extruded bidirectional drawing and forming is hot sealing layer after the ternary ethylene-propylene copolymer, C5 resin and silicone resin are blended；The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1, the sandwich layer main component uses ultra-high molecular weight polyethylene (UHMWPE), and using extruded bidirectional drawing and forming after mechanical blending, the film longitudinal tensile strength being ultimately formed is not less than 25MPa, transverse tensile strength is not less than 20 MPa, tearing strength and puncture resistance greatly improve simultaneously.
Description
Technical field
The present invention relates to packing film technical field, in particular to a kind of co-extruding biaxial stretched packing film.
Background technique
High-performance shrinkage packing film is usually used in special-shaped product packaging, such as skin packaging, high-speed packaging, this kind of film
Can it is excellent, sealing-strength is high, for pack it is fit after, phase appearance is bright, without any wrinkle, sealing line is tiny securely, ungauged regions
Hard angle afterwards, the bandwagon effect of perfect reproduction packing material.For packing machine wide adaptability, no matter in old slow packing machine or
Perfect packaging effect can be realized on new high-speed packaging machine.
It for a long time, is all with chemical crosslink technique and electron radiation in the manufacturing process of high-performance shrinkage packing film
Cross-linking method produces, and has obvious drawback with the production of both Radiation Crosslinking Methods: (1) being produced using chemical crosslink technique technique
Film there are gel phenomenon, trimming material and leftover pieces after heating fusing since polymer molecule is cross-linked into reticular structure
It is unable to online recycling utilization, high production cost, product material consumption is greatly；(2) either chemical crosslink technique or electron radiation are crosslinked all
Anthropochemistry, radiation injury there are environmental pollution and to worker, there is also row's hydrogen etc. to produce hazard Identification in process of production,
And equipment investment is big, takes up a large area, and wears film long flow path, increases the difficulty and cost of plant maintenance.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of co-extruding biaxial stretched packing film, i.e. film
The improvement of the formula and moulding process of sandwich layer and hot sealing layer, improves the performance of packing film.
The present invention provides a kind of co-extruding biaxial stretched packing film, includes at least sandwich layer and hot sealing layer；
The sandwich layer includes the ultra-high molecular weight polyethylene that mass fraction is 60% ~ 80%, the C9 tree that mass fraction is 20% ~ 40%
Extruded bidirectional drawing and forming is sandwich layer after rouge, the ultra-high molecular weight polyethylene and C9 resin alloy；
The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 60% ~ 70%, the C5 tree that mass fraction is 25% ~ 35%
Rouge, the silicone resin that mass fraction is 3% ~ 6%, the ternary ethylene-propylene copolymer, C5 resin and silicone resin squeeze out double after being blended
It is hot sealing layer to drawing and forming；
The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1.
Further, the molecular weight of the ultra-high molecular weight polyethylene is 5,000,000-600 ten thousand.
Further, the sandwich layer further includes 0% ~ 6% dicyclopentadiene that mass fraction is, the sandwich layer is blended the time and is
50min。
Further, the time is blended as 60min in the hot sealing layer.
Further, longitudinal stretching multiple is 6 ~ 8 when the drawing and forming, and longitudinal drawing temperature is 140 DEG C ~ 160 DEG C；Institute
Transverse stretch ratio is 8 ~ 9 when stating drawing and forming, and transverse drawing temperature is 180 DEG C ~ 220 DEG C.
Further, the setting temperature of the packing film is 90 DEG C ~ 100 DEG C.
By above-mentioned improvement, the technical effect realized is as follows:
(1) the sandwich layer main component uses ultra-high molecular weight polyethylene (UHMWPE), and using extruded bidirectional after mechanical blending
Drawing and forming, the film longitudinal tensile strength being ultimately formed are not less than 25MPa, and transverse tensile strength is not less than 20 MPa, together
When tearing strength and puncture resistance greatly improve.
(2) hot sealing layer selects ternary ethylene-propylene copolymer as surface layer heat-sealable material, to increase sealing-strength and fit
Packaging character.
(3) the hot sealing layer addition C5 resin advantageously reduces the shrinkage temperature and heat of film as hot sealing layer additive
Temperature is sealed, addition silicone resin improves packaging speed as slipping agent to increase smooth performance when high-speed packaging.
(4) C9 resin is added in the sandwich layer is modulus in order to increase film, while improving the glossiness and thoroughly of film
Lightness.
(5) co-extruding biaxial stretched packing film can meet or exceed the performance requirement of cross-linking method film, and manufacturing cost is aobvious
Writing reduces, and economic benefit improves, while realizing the online recycling of thin film leftover material, production process safety and environmental protection.
(6) mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1, and ultra-high molecular weight polyethylene excessively adds
Add meeting so that film flexible nature, antistatic property decline, are constrained by the mass ratio between hot sealing layer C5 thus, made
Using ultra-high molecular weight polyethylene, guarantee that film flexible nature, antistatic property meet requirement.
Specific embodiment
It below in conjunction with specific embodiment, elaborates to the technical solution of invention, it should be understood that these embodiments are only used
In illustrating the present invention rather than limit the scope of the invention, after the present invention has been read, those skilled in the art are to this hair
The modification of bright various equivalent forms is each fallen in the application range as defined in the appended claims.
Embodiment 1
The present invention provides a kind of co-extruding biaxial stretched packing film, includes at least sandwich layer and hot sealing layer；
The sandwich layer includes the ultra-high molecular weight polyethylene that mass fraction is 60% ~ 80%, the C9 tree that mass fraction is 20% ~ 40%
Extruded bidirectional drawing and forming is sandwich layer after rouge, the ultra-high molecular weight polyethylene and C9 resin alloy；
The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 60% ~ 70%, the C5 tree that mass fraction is 25% ~ 35%
Rouge, the silicone resin that mass fraction is 3% ~ 6%, the ternary ethylene-propylene copolymer, C5 resin and silicone resin squeeze out double after being blended
It is hot sealing layer to drawing and forming；
The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1.
The technical effect that above embodiment is realized is as follows:
(1) the sandwich layer main component uses ultra-high molecular weight polyethylene (UHMWPE), and using extruded bidirectional after mechanical blending
Drawing and forming, the film longitudinal tensile strength being ultimately formed are not less than 25MPa, and transverse tensile strength is not less than 20 MPa, together
When tearing strength and puncture resistance greatly improve.
(2) hot sealing layer selects ternary ethylene-propylene copolymer as surface layer heat-sealable material, to increase sealing-strength and fit
Packaging character.
(3) the hot sealing layer addition C5 resin advantageously reduces the shrinkage temperature and heat of film as hot sealing layer additive
Temperature is sealed, addition silicone resin improves packaging speed as slipping agent to increase smooth performance when high-speed packaging.
(4) C9 resin is added in the sandwich layer is modulus in order to increase film, while improving the glossiness and thoroughly of film
Lightness.
(5) co-extruding biaxial stretched packing film can meet or exceed the performance requirement of cross-linking method film, and manufacturing cost is aobvious
Writing reduces, and economic benefit improves, while realizing the online recycling of thin film leftover material, production process safety and environmental protection.
(6) mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1, and ultra-high molecular weight polyethylene excessively adds
Add meeting so that film flexible nature, antistatic property decline, are constrained by the mass ratio between hot sealing layer C5 thus, made
Using ultra-high molecular weight polyethylene, guarantee that film flexible nature, antistatic property meet requirement.
As a kind of preferred embodiment of the present embodiment, the molecular weight of the ultra-high molecular weight polyethylene is 5,000,000-
6000000.
In this embodiment, the restriction of molecular weight is so that finally formed film has had both flexibility and intensity index.
As a kind of preferred embodiment of the present embodiment, the sandwich layer further includes 0% ~ 6% bicyclic penta that mass fraction is
The time is blended as 50min in diene, the sandwich layer.
The additive when dicyclopentadiene is blended as sandwich layer, with the ultra-high molecular weight polyethylene further progress
Polymerization reaction helps to improve film strength.
As a kind of preferred embodiment of the present embodiment, the time is blended as 60min in the hot sealing layer.
As a kind of preferred embodiment of the present embodiment, longitudinal stretching multiple is 6 ~ 8, Zong Xiangla when the drawing and forming
Stretching temperature is 140 DEG C ~ 160 DEG C；Transverse stretch ratio is 8 ~ 9 when the drawing and forming, and transverse drawing temperature is 180 DEG C ~ 220
℃。
As a kind of preferred embodiment of the present embodiment, the setting temperature of the packing film is 90 DEG C ~ 100 DEG C.
Embodiment 2
The present invention provides a kind of co-extruding biaxial stretched packing film, includes at least sandwich layer and hot sealing layer；
The sandwich layer includes the ultra-high molecular weight polyethylene that mass fraction is 60%, and the C9 resin that mass fraction is 40% is described super
Extruded bidirectional drawing and forming is sandwich layer after High molecular weight polyethylene and C9 resin alloy；
The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 70%, C5 resin that mass fraction is 25%, quality point
Extruded bidirectional drawing and forming is after the silicone resin that number is 5%, the ternary ethylene-propylene copolymer, C5 resin and silicone resin are blended
Hot sealing layer；
The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1.
The technical effect that above embodiment is realized is as follows:
(1) the sandwich layer main component uses ultra-high molecular weight polyethylene (UHMWPE), and using extruded bidirectional after mechanical blending
Drawing and forming, the film longitudinal tensile strength being ultimately formed are not less than 25MPa, and transverse tensile strength is not less than 20 MPa, together
When tearing strength and puncture resistance greatly improve.
(2) hot sealing layer selects ternary ethylene-propylene copolymer as surface layer heat-sealable material, to increase sealing-strength and fit
Packaging character.
(3) the hot sealing layer addition C5 resin advantageously reduces the shrinkage temperature and heat of film as hot sealing layer additive
Temperature is sealed, addition silicone resin improves packaging speed as slipping agent to increase smooth performance when high-speed packaging.
(4) C9 resin is added in the sandwich layer is modulus in order to increase film, while improving the glossiness and thoroughly of film
Lightness.
(5) co-extruding biaxial stretched packing film can meet or exceed the performance requirement of cross-linking method film, and manufacturing cost is aobvious
Writing reduces, and economic benefit improves, while realizing the online recycling of thin film leftover material, production process safety and environmental protection.
(6) mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1, and ultra-high molecular weight polyethylene excessively adds
Add meeting so that film flexible nature, antistatic property decline, are constrained by the mass ratio between hot sealing layer C5 thus, made
Using ultra-high molecular weight polyethylene, guarantee that film flexible nature, antistatic property meet requirement.
The technical effect that above embodiment is realized is as follows:
As a kind of preferred embodiment of the present embodiment, the molecular weight of the ultra-high molecular weight polyethylene is 5,000,000.
In this embodiment, the restriction of molecular weight is so that finally formed film has had both flexibility and intensity index.
As a kind of preferred embodiment of the present embodiment, the sandwich layer further includes 0% bicyclic penta 2 that mass fraction is
The time is blended as 50min in alkene, the sandwich layer.
The additive when dicyclopentadiene is blended as sandwich layer, with the ultra-high molecular weight polyethylene further progress
Polymerization reaction helps to improve film strength.
As a kind of preferred embodiment of the present embodiment, the time is blended as 60min in the hot sealing layer.
As a kind of preferred embodiment of the present embodiment, longitudinal stretching multiple is 7 when the drawing and forming, longitudinal stretching
Temperature is 150 DEG C；Transverse stretch ratio is 8 when the drawing and forming, and transverse drawing temperature is 200 DEG C.
As a kind of preferred embodiment of the present embodiment, the setting temperature of the packing film is 90 DEG C.
Embodiment 3
The present invention provides a kind of co-extruding biaxial stretched packing film, includes at least sandwich layer and hot sealing layer；
The sandwich layer includes the ultra-high molecular weight polyethylene that mass fraction is 70%, and the C9 resin that mass fraction is 25% is described super
Extruded bidirectional drawing and forming is sandwich layer after High molecular weight polyethylene and C9 resin alloy, and the sandwich layer further includes mass fraction
The time is blended as 50min in 5% dicyclopentadiene, the sandwich layer；
The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 65%, C5 resin that mass fraction is 30%, quality point
Extruded bidirectional drawing and forming is after the silicone resin that number is 5%, the ternary ethylene-propylene copolymer, C5 resin and silicone resin are blended
Hot sealing layer；
The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1.
The technical effect that above embodiment is realized is as follows:
(1) the sandwich layer main component uses ultra-high molecular weight polyethylene (UHMWPE), and using extruded bidirectional after mechanical blending
Drawing and forming, the film longitudinal tensile strength being ultimately formed are not less than 25MPa, and transverse tensile strength is not less than 20 MPa, together
When tearing strength and puncture resistance greatly improve.
(2) hot sealing layer selects ternary ethylene-propylene copolymer as surface layer heat-sealable material, to increase sealing-strength and fit
Packaging character.
(3) the hot sealing layer addition C5 resin advantageously reduces the shrinkage temperature and heat of film as hot sealing layer additive
Temperature is sealed, addition silicone resin improves packaging speed as slipping agent to increase smooth performance when high-speed packaging.
(4) C9 resin is added in the sandwich layer is modulus in order to increase film, while improving the glossiness and thoroughly of film
Lightness.
(5) co-extruding biaxial stretched packing film can meet or exceed the performance requirement of cross-linking method film, and manufacturing cost is aobvious
Writing reduces, and economic benefit improves, while realizing the online recycling of thin film leftover material, production process safety and environmental protection.
(6) mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1, and ultra-high molecular weight polyethylene excessively adds
Add meeting so that film flexible nature, antistatic property decline, are constrained by the mass ratio between hot sealing layer C5 thus, made
Using ultra-high molecular weight polyethylene, guarantee that film flexible nature, antistatic property meet requirement.
As a kind of preferred embodiment of the present embodiment, the molecular weight of the ultra-high molecular weight polyethylene is 6,000,000.
In this embodiment, the restriction of molecular weight is so that finally formed film has had both flexibility and intensity index.
The additive when dicyclopentadiene is blended as sandwich layer, with the ultra-high molecular weight polyethylene further progress
Polymerization reaction helps to improve film strength.
As a kind of preferred embodiment of the present embodiment, the time is blended as 60min in the hot sealing layer.
As a kind of preferred embodiment of the present embodiment, longitudinal stretching multiple is 8 when the drawing and forming, longitudinal stretching
Temperature is 160 DEG C；Transverse stretch ratio is 9 when the drawing and forming, and transverse drawing temperature is 220 DEG C.
As a kind of preferred embodiment of the present embodiment, the setting temperature of the packing film is 100 DEG C.
Claims (6)
1. a kind of co-extruding biaxial stretched packing film, which is characterized in that include at least sandwich layer and hot sealing layer；
The sandwich layer includes the ultra-high molecular weight polyethylene that mass fraction is 60% ~ 80%, the C9 tree that mass fraction is 20% ~ 40%
Extruded bidirectional drawing and forming is sandwich layer after rouge, the ultra-high molecular weight polyethylene and C9 resin alloy；
The hot sealing layer includes the ternary ethylene-propylene copolymer that mass fraction is 60% ~ 70%, the C5 tree that mass fraction is 25% ~ 35%
Rouge, the silicone resin that mass fraction is 3% ~ 6%, the ternary ethylene-propylene copolymer, C5 resin and silicone resin squeeze out double after being blended
It is hot sealing layer to drawing and forming；
The mass ratio of the ultra-high molecular weight polyethylene and C5 resin is 3:1.
2. a kind of co-extruding biaxial stretched packing film as described in claim 1, which is characterized in that the superhigh molecular weight polyethylene
The molecular weight of alkene is 5,000,000-600 ten thousand.
3. a kind of co-extruding biaxial stretched packing film as described in claim 1, which is characterized in that the sandwich layer further includes quality
The time is blended as 50min in 0% ~ 6% dicyclopentadiene that score is, the sandwich layer.
4. a kind of co-extruding biaxial stretched packing film as described in claim 1, which is characterized in that the time is blended in the hot sealing layer
For 60min.
5. a kind of co-extruding biaxial stretched packing film a method as claimed in any one of claims 1 to 5, which is characterized in that the drawing and forming
When longitudinal stretching multiple be 6 ~ 8, longitudinal drawing temperature be 140 DEG C ~ 160 DEG C；When the drawing and forming transverse stretch ratio be 8 ~
9, transverse drawing temperature is 180 DEG C ~ 220 DEG C.
6. a kind of co-extruding biaxial stretched packing film as claimed in claim 5, which is characterized in that the sizing of the packing film
Temperature is 90 DEG C ~ 100 DEG C.
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|---|---|---|---|
| CN201910685826.9A CN110497677B (en) | 2019-07-28 | 2019-07-28 | Co-extrusion two-way stretching packaging film |
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|---|---|---|---|
| CN201910685826.9A CN110497677B (en) | 2019-07-28 | 2019-07-28 | Co-extrusion two-way stretching packaging film |
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| CN110497677A true CN110497677A (en) | 2019-11-26 |
| CN110497677B CN110497677B (en) | 2021-05-14 |
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| JPS59169858A (en) * | 1983-03-17 | 1984-09-25 | 大石産業株式会社 | Film for stacked bag |
| CN1616315A (en) * | 2004-11-23 | 2005-05-18 | 上海大智企业(集团)有限公司 | Special film for container buffer air bag |
| CN101966891A (en) * | 2010-10-25 | 2011-02-09 | 黄山永新股份有限公司 | Casting polypropylene (CPP) membrane for paper packaging and preparation method thereof |
| CN101985501A (en) * | 2010-10-16 | 2011-03-16 | 甘肃华峰管业科技有限公司 | Method for preparing extrusion-grade ultrahigh molecular weight polyethylene-high density polyethylene-attapulgite pregel composite material |
| CN105644092A (en) * | 2015-12-30 | 2016-06-08 | 江阴中达软塑新材料股份有限公司 | Low-temperature heat-sealing non-paper packaging film for cigarettes in carton and manufacturing method thereof |
| CN106183292A (en) * | 2016-07-03 | 2016-12-07 | 厦门大学 | Three-layer co-extruded quick biaxial tension wide cut polyethylene co-extruded film and preparation method thereof |
-
2019
- 2019-07-28 CN CN201910685826.9A patent/CN110497677B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59169858A (en) * | 1983-03-17 | 1984-09-25 | 大石産業株式会社 | Film for stacked bag |
| CN1616315A (en) * | 2004-11-23 | 2005-05-18 | 上海大智企业(集团)有限公司 | Special film for container buffer air bag |
| CN101985501A (en) * | 2010-10-16 | 2011-03-16 | 甘肃华峰管业科技有限公司 | Method for preparing extrusion-grade ultrahigh molecular weight polyethylene-high density polyethylene-attapulgite pregel composite material |
| CN101966891A (en) * | 2010-10-25 | 2011-02-09 | 黄山永新股份有限公司 | Casting polypropylene (CPP) membrane for paper packaging and preparation method thereof |
| CN105644092A (en) * | 2015-12-30 | 2016-06-08 | 江阴中达软塑新材料股份有限公司 | Low-temperature heat-sealing non-paper packaging film for cigarettes in carton and manufacturing method thereof |
| CN106183292A (en) * | 2016-07-03 | 2016-12-07 | 厦门大学 | Three-layer co-extruded quick biaxial tension wide cut polyethylene co-extruded film and preparation method thereof |
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| CN110497677B (en) | 2021-05-14 |
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