CN105860200A - High-viscosity self-adhesion protective film and preparation method thereof - Google Patents
High-viscosity self-adhesion protective film and preparation method thereof Download PDFInfo
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- CN105860200A CN105860200A CN201610258013.8A CN201610258013A CN105860200A CN 105860200 A CN105860200 A CN 105860200A CN 201610258013 A CN201610258013 A CN 201610258013A CN 105860200 A CN105860200 A CN 105860200A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- 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
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
- B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/04—Homopolymers or copolymers of ethene
- C09J123/08—Copolymers of ethene
- C09J123/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C09J123/0815—Copolymers of ethene with aliphatic 1-olefins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/04—Presence of homo or copolymers of ethene
Abstract
The invention discloses a high-viscosity self-adhesion protective film and a preparation method thereof. The high-viscosity self-adhesion protective film comprises four layers, i.e. an A outer layer, a B middle layer, a C middle layer and a D inner layer; raw materials of four layers mainly comprise linear low density polyethylene, metallocene and SEBS; in the preparation method, a high-speed running pressure box is adopted, a mode of multiple groups of extrusion screws is adopted, and after raw materials are in a high-temperature molten state, repeated multilayer filtration is adopted by a candle-type screen changer. The protective film disclosed by the invention has high self-adhesion, high stability and a wide application range, is more transparent in film appearance, has fewer film surface fish eye phenomena, has a mush higher physical property than a conventional self-adhesion protective film, is easy to adhere and easy to tear, has a more prominent protective effect, is low in cost, is simple in process, and is energy-saving and environmental-friendly.
Description
Technical field
The present invention relates to adhesive membrane, it is low to be specifically related to a kind of production cost, and autohension is high and stable, brilliant point
Little new generation of environment protection high viscosity adhesive protecting film and preparation method thereof.
Background technology
All the time, the adhesive film for the purpose of the surface protection of nappe is at construction material, electric, electric
Using when the processing of sub-product, automobile etc., keeping, transport, this adhesive film must have good gluing
Conjunction property, and can be easily peeled off after a procedure without making each surface by adhesive contamination.
The adhesive protecting film of supply on existing market, mostly is low gluing and glues protecting film with middle height.It is many that middle height glues protecting film
Using import raw material, equipment has upper blowing mode and curtain coating mode, and production cost is the most relatively costly, and produces
Quality occurs raw material strand and ruptures, and produces fish stricture of vagina, tiny brilliant some phenomenon.Traditional making side
Method makes can not stablizing from viscosity of product, is particularly affected the most prominent by variation of ambient temperature.
The patent of invention of Publication No. CN104220548A discloses self adhesion surface protective film and disclosure
Self adhesion surface protection film number disclosed in CN104685017A, both the above protecting film mainly by substrate layer,
Adhesive layer and release layer up of three layers, its adhesive layer includes the styrene series elastomer (benzene of 35 parts-99 parts
The hydride of the block copolymer of ethylene-based polymer block and butadiene-based polymer blocks or there is benzene second
The hydride of the block copolymer of the block of random copolymer of alkene based polymer block and styrene and butadiene,
Described polyethylene-based resin is Alathon and/or ethylene-alpha-olefin copolymer) and 1 part-65 parts poly-
Vinylite, it is different with coefficient that it is mainly characterized by its proportioning raw materials, its preparation method predominantly routine
Extrusion curtain coating, production cost is high.Publication No. CN104527187A discloses a kind of adhesive protecting film and system thereof
Preparation Method, it is mainly made up of with inner layer film D inner layer film, mesopelagic layer, and its D inner layer film and mesopelagic layer are main
Raw material is metallocene PE, Low Density Polyethylene or linear low density polyethylene, and inner layer film is mainly Tao Shi
Chemistry elastomer, in its preparation method, have employed extrusion film-blowing process, and cost is high.
In sum, current high viscosity adhesive protecting film, although composition is the most different, but all use and blow
Mould mode and curtain coating mode, improve production cost, and autohension is unstable, and by variation of ambient temperature
Impact is big.
Summary of the invention
In order to solve above-mentioned deficiency and defect, it is good that the present invention proposes a kind of viscosity, and the scope of application is wider,
Film appearance is transparent, brilliant some phenomenon of face is few, and physical property is high, and easy sticker is easily torn, and protected effect highlights, low cost,
Technique simple environmental protection type high viscosity adhesive protecting film and preparation method thereof.
To achieve these goals, the present invention is achieved through the following technical solutions:
A kind of high viscosity adhesive protecting film, including A outer layer, B middle level, C middle level and D internal layer four layers composition；
Described A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30-40 part, metallocene
40-50 part, SEBS 15-20 part, opening auxiliary agent 1-5 part, PPA auxiliary agent 1-5 part；
Described B middle level is identical with layer component in C, by the weight portion of following components is: the poly-second of linear, low density
Alkene 40-60 part, metallocene 25-35 part, SEBS 15-25 part, PPA auxiliary agent 1-5 part；
Described D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 28-35 part, metallocene
45-55 part, SEBS 15-25 part, uvioresistant auxiliary agent 1-5 part, PPA auxiliary agent 1-5 part.
Further, a kind of high viscosity adhesive protecting film, including A outer layer, B middle level, C middle level and D internal layer
Four layers of composition；
Described A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 34-36 part, metallocene
42-46 part, SEBS 18-20 part, opening auxiliary agent 1-3 part, PPA auxiliary agent 1-2 part；
Described B middle level is identical with layer component in C, by the weight portion of following components is: the poly-second of linear, low density
Alkene 45-55 part, metallocene 28-32 part, SEBS 18-24 part, PPA auxiliary agent 1-2 part；
Described D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30-35 part, metallocene
50-55 part, SEBS 15-22 part, uvioresistant auxiliary agent 1-2 part, PPA auxiliary agent 1-2 part.
Further, described opening auxiliary agent includes silicon dioxide and erucamid erucyl amide, described silicon dioxide and the acid that is situated between
The ratio of amide is 1.5:1.
Further, described PPA auxiliary agent is macromolecule fluoropolymer processing agent.
The preparation method of a kind of high viscosity adhesive protecting film, comprises the following steps:
(1) batch mixing, after the component raw material of every layer is weighed by automatic Weighing mixing system, sealed blended
After be respectively delivered in screw extruder, screw extruder is divided into four layers, every layer component raw material respectively enters
Respective batch mixing 10～12min after four layers, after batch mixing the material of every layer by fully automatic vacuum Material sucking machine pump respectively to
In the transparent storage bin of automatic metering unloading machine, during whole, every layer component raw material is all held apart at state；
(2) extrusion: the compound in each transparent storage bin is added separately in four screw extruders,
Set the temperature in each stage in screw extruder and be extruded into granular pattern masterbatch；
(3) melt filteration: set melt temperature as 241 DEG C, pressure 240Mpa, melts every layer of masterbatch
Melting, every layer of masterbatch after melting enters allotter after filtering each via " candle formula net-changing device ", will be every
The masterbatch distribution of layer molten condition forms T-shaped mould, film forming to different die heads；
(4) molding regulation: the thin film after molding carries out cooling and shaping through cooling device and obtains protecting film, and
By X-ray automatic thickness tester, film thickness is fed back to automatic mold-adjustment system, die gap thickness is carried out
After being uniformly automatically adjusted, film trimming is carried out tension coiling by winding device after cutting, and obtains autohension protection
Film；Utilizing water-cooling system in cooling, have employed cooling stick in water-cooling system, cooling stick inner cold water follows back and forth
Ring, and cooling stick surface is used fog cooling, make nunchakus body surface temperature consistent, it is ensured that the cooling of thin film
Crystallize basically identical, it is ensured that thin film is uniform at the thickness of extrusion molding.
Further, the draw ratio of described screw extruder is 32:1.
Further, in described screw extruder, the co-extrusion interlayer ratio of four layers is 1.5:3.5:3.5:1.5；
Further, in described screw extruder, the extrusion coefficient of four layers is A outer layer: B middle level: C middle level:
D internal layer=4.3:4.5:4.5:4.3.
High viscosity adhesive protecting film of the present invention and preparation method thereof, protecting film of the present invention is by interior, in A and in B,
Outer four layers of composition, have employed different raw materials and proportioning, it is possible to the autohension of enhanced film in every layer, and
Stability strengthens, moreover it is possible to improves the transparency of thin film and attractive in appearance, and increases its slickness.Processing aid is
PPA macromolecule fluoropolymer processing agent, uses this auxiliary agent to form fluoroelastomer thin layer on membrana oralis surface, passes through
This smooth non-adhesive coating, reduces the friction that contacts of resin and membrana oralis, increases resin discharge-amount, suppression
The generation of melt fracture.
In preparation method of the present invention, use traditional Screw Extrusion, but use different height in extrusion pressure case
Speed exploitation speed carries out pressing case, reduces raw material viscosity on screw rod.In Screw Extrusion, middle level is divided into A
Layer and B layer two-layer, owing to combined amount is certain, use two-layer in the present invention, it is possible to makes quantitative former
Material plastifies respectively in two screw rods, improves plasticizing effect, better in the effect of follow-up membrane,
Prevent rupturing after molten condition and film forming, improve the stability of self-adhesive film.And use many groups of multilamellar
Separately extrude, it is to avoid blended raw material is mutually restrained, constrained raw material decay functionally simultaneously；Former material
Material uses multilamellar multiple times of filtration through " candle formula net-changing device " after high-temperature molten-state, it is ensured that raw material molten state
Middle impurities and segment effective filtration of sub-thing, it is ensured that thin film is high thoroughly without brilliant some phenomenon, and mould uses domestic
Raw material design runner, reduces production cost.
High viscosity adhesive protecting film of the present invention and preparation method thereof, it has the beneficial effects that: autohension is high, surely
Qualitative good, usage range is wide, and film appearance is more transparent, brilliant some phenomenon of face less, and physical property is far above tradition
Adhesive protecting film, easy sticker easily tears, and protected effect is more prominent, low cost, and technique is simple, energy-conserving and environment-protective.
Detailed description of the invention
The present invention is further described below in conjunction with specific embodiment.
Embodiment 1
A kind of high viscosity adhesive protecting film, including A outer layer, B middle level, C middle level and D internal layer four layers composition；
A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30 parts, metallocene 50 parts, SEBS
20 parts, opening auxiliary agent 5 parts, PPA auxiliary agent 5 parts；
B middle level is identical with layer component in C, by the weight portion of following components is: linear low density polyethylene (LLDPE) 40
Part, metallocene 35 parts, SEBS 25 parts, PPA auxiliary agent 1 part；
D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 28 parts, metallocene 55 parts, SEBS
15 parts, uvioresistant auxiliary agent 5 parts, PPA auxiliary agent 5 parts.
A kind of high viscosity adhesive protecting film, preparation method comprises the following steps:
(1) batch mixing, after the component raw material of every layer is weighed by automatic Weighing mixing system, sealed blended
After be respectively delivered in screw extruder, screw extruder is divided into four layers, every layer component raw material respectively enters
Respective batch mixing 10-12min after four layers, each batch mixing is in 100-125kg, and after batch mixing, the material of every layer is by entirely
Automatic vacuum Material sucking machine is pumped respectively to the transparent storage bin of automatic metering unloading machine, every during whole
Layer component raw material is all held apart at state；
(2) extrusion: the compound in each transparent storage bin is added separately in four screw extruders,
In screw extruder, set 7 phase temperature, set the temperature in each stage in screw extruder and be extruded into
Granular pattern masterbatch；
(3) melt filteration: set melt temperature as 241 DEG C, pressure 240Mpa, melts every layer of masterbatch
Melting, every layer of masterbatch after melting enters allotter after filtering each via " candle formula net-changing device ", will be every
The masterbatch distribution of layer molten condition forms T-shaped mould, film forming to different die heads；
(4) molding regulation: the thin film after molding carries out cooling and shaping through cooling device and obtains protecting film, and
By X-ray automatic thickness tester, film thickness is fed back to automatic mold-adjustment system, die gap thickness is carried out
After being uniformly automatically adjusted, film trimming is carried out tension coiling by winding device after cutting, and obtains autohension protection
Film；Utilizing water-cooling system in cooling, cooling water system uses 160 horsepowers, and water temperature can be at 12 DEG C-18 DEG C
Regulation, operating pressure 2-4bar, the maximum 12 degree of dh (DH Defo hardness) of water source total hardness, non-carbon hardness is maximum
Being 5 degree of dh (DH Defo hardness), have employed cooling stick in water-cooling system, cooling stick inner cold water circulates back and forth, and
Cooling stick surface is used fog cooling, makes nunchakus body surface temperature consistent, it is ensured that the crystallisation by cooling base of thin film
This is consistent, it is ensured that thin film is uniform at the thickness of extrusion molding.
7 phase temperature such as tables 1 in step (2):
| Section between 1st | Section between 2nd | Section between 3rd | Section between 4th | Section between 5th | Section between 6th | Section between 7th |
| 170℃ | 172℃ | 185℃ | 200℃ | 205℃ | 205℃ | 200℃ |
Table 1
Screw rod squeezes shown in rotating speed and a diameter of table 2 of four layers of screw rod in main frame:
| Project | A outer layer | B middle level | C middle level | D internal layer |
| Rotating speed (r/min) | 52 | 66 | 66 | 56 |
| Radius (mm) | 90 | 120 | 120 | 90 |
Table 2
Four layers of molten condition raw material enter in the T-shaped mould that allotter enters, the temperature of four kinds of T-shaped moulds
As shown in table 3:
| A outer layer | B middle level | C middle level | D internal layer |
| 200℃ | 205℃ | 205℃ | 210℃ |
Table 3
Embodiment 2
A kind of high viscosity adhesive protecting film, including A outer layer, B middle level, C middle level and D internal layer four layers composition；
A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 35 parts, metallocene 45 parts, SEBS
20 parts, opening auxiliary agent 2 parts, PPA auxiliary agent 1.5 parts；
B middle level is identical with layer component in C, by the weight portion of following components is: linear low density polyethylene (LLDPE) 50
Part, metallocene 30 parts, SEBS 20 parts, PPA auxiliary agent 1.5 parts；
D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30 parts, metallocene 50 parts, SEBS
20 parts, uvioresistant auxiliary agent 1.5 parts, PPA auxiliary agent 1.5 parts.
A kind of high viscosity adhesive protecting film, preparation method comprises the following steps:
(1) batch mixing, after the component raw material of every layer is weighed by automatic Weighing mixing system, sealed blended
After be respectively delivered in screw extruder, screw extruder is divided into four layers, every layer component raw material respectively enters
Respective batch mixing 10-12min after four layers, each batch mixing is in 100-125kg, and after batch mixing, the material of every layer is by entirely
Automatic vacuum Material sucking machine is pumped respectively to the transparent storage bin of automatic metering unloading machine, every during whole
Layer component raw material is all held apart at state；
(2) extrusion: the compound in each transparent storage bin is added separately in four screw extruders,
In screw extruder, set 7 phase temperature, set the temperature in each stage in screw extruder and be extruded into
Granular pattern masterbatch；
(3) melt filteration: set melt temperature as 241 DEG C, pressure 240Mpa, melts every layer of masterbatch
Melting, every layer of masterbatch after melting enters allotter after filtering each via " candle formula net-changing device ", will be every
The masterbatch distribution of layer molten condition forms T-shaped mould, film forming to different die heads；
(4) molding regulation: the thin film after molding carries out cooling and shaping through cooling device and obtains protecting film, and
By X-ray automatic thickness tester, film thickness is fed back to automatic mold-adjustment system, die gap thickness is carried out
After being uniformly automatically adjusted, film trimming is carried out tension coiling by winding device after cutting, and obtains autohension protection
Film；Utilizing water-cooling system in cooling, cooling water system uses 160 horsepowers, and water temperature can be at 12 DEG C-18 DEG C
Regulation, operating pressure 2-4bar, the maximum 12 degree of dh (DH Defo hardness) of water source total hardness, non-carbon hardness is maximum
Being 5 degree of dh (DH Defo hardness), have employed cooling stick in water-cooling system, cooling stick inner cold water circulates back and forth, and
Cooling stick surface is used fog cooling, makes nunchakus body surface temperature consistent, it is ensured that the crystallisation by cooling base of thin film
This is consistent, it is ensured that thin film is uniform at the thickness of extrusion molding.
7 phase temperature such as tables 1 in step (2):
| Section between 1st | Section between 2nd | Section between 3rd | Section between 4th | Section between 5th | Section between 6th | Section between 7th |
| 170℃ | 172℃ | 185℃ | 200℃ | 205℃ | 205℃ | 200℃ |
Table 1
Screw rod squeezes shown in rotating speed and a diameter of table 2 of four layers of screw rod in main frame:
| Project | A outer layer | B middle level | C middle level | D internal layer |
| Rotating speed (r/min) | 52 | 66 | 66 | 56 |
| Radius (mm) | 90 | 120 | 120 | 90 |
Table 2
Four layers of molten condition raw material enter in the T-shaped mould that allotter enters, the temperature of four kinds of T-shaped moulds
As shown in table 3:
| A outer layer | B middle level | C middle level | D internal layer |
| 200℃ | 205℃ | 205℃ | 210℃ |
Table 3
Embodiment 3
A kind of high viscosity adhesive protecting film, including A outer layer, B middle level, C middle level and D internal layer four layers composition；
A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 40 parts, metallocene 40 parts, SEBS
15 parts, opening auxiliary agent 1 part, PPA auxiliary agent 1 part；
B middle level is identical with layer component in C, by the weight portion of following components is: linear low density polyethylene (LLDPE) 60
Part, metallocene 25 parts, SEBS 15 parts, PPA auxiliary agent 1.5 parts；
D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 35 parts, metallocene 45 parts, SEBS
25 parts, uvioresistant auxiliary agent 5 parts, PPA auxiliary agent 1.5 parts.
A kind of high viscosity adhesive protecting film, preparation method comprises the following steps:
(1) batch mixing, after the component raw material of every layer is weighed by automatic Weighing mixing system, sealed blended
After be respectively delivered in screw extruder, screw extruder is divided into four layers, every layer component raw material respectively enters
Respective batch mixing 10-12min after four layers, each batch mixing is in 100-125kg, and after batch mixing, the material of every layer is by entirely
Automatic vacuum Material sucking machine is pumped respectively to the transparent storage bin of automatic metering unloading machine, every during whole
Layer component raw material is all held apart at state；
(2) extrusion: the compound in each transparent storage bin is added separately in four screw extruders,
In screw extruder, set 7 phase temperature, set the temperature in each stage in screw extruder and be extruded into
Granular pattern masterbatch；
(3) melt filteration: set melt temperature as 241 DEG C, pressure 240Mpa, melts every layer of masterbatch
Melting, every layer of masterbatch after melting enters allotter after filtering each via " candle formula net-changing device ", will be every
The masterbatch distribution of layer molten condition forms T-shaped mould, film forming to different die heads；
(4) molding regulation: the thin film after molding carries out cooling and shaping through cooling device and obtains protecting film, and
By X-ray automatic thickness tester, film thickness is fed back to automatic mold-adjustment system, die gap thickness is carried out
After being uniformly automatically adjusted, film trimming is carried out tension coiling by winding device after cutting, and obtains autohension protection
Film；Utilizing water-cooling system in cooling, cooling water system uses 160 horsepowers, and water temperature can be at 12 DEG C-18 DEG C
Regulation, operating pressure 2-4bar, the maximum 12 degree of dh (DH Defo hardness) of water source total hardness, non-carbon hardness is maximum
Being 5 degree of dh (DH Defo hardness), have employed cooling stick in water-cooling system, cooling stick inner cold water circulates back and forth, and
Cooling stick surface is used fog cooling, makes nunchakus body surface temperature consistent, it is ensured that the crystallisation by cooling base of thin film
This is consistent, it is ensured that thin film is uniform at the thickness of extrusion molding.
7 phase temperature such as tables 1 in step (2):
| Section between 1st | Section between 2nd | Section between 3rd | Section between 4th | Section between 5th | Section between 6th | Section between 7th |
| 170℃ | 172℃ | 185℃ | 200℃ | 205℃ | 205℃ | 200℃ |
Table 1
Screw rod squeezes shown in rotating speed and a diameter of table 2 of four layers of screw rod in main frame:
| Project | A outer layer | B middle level | C middle level | D internal layer |
| Rotating speed (r/min) | 52 | 66 | 66 | 56 |
| Radius (mm) | 90 | 120 | 120 | 90 |
Table 2
Four layers of molten condition raw material enter in the T-shaped mould that allotter enters, the temperature of four kinds of T-shaped moulds
As shown in table 3:
| A outer layer | B middle level | C middle level | D internal layer |
| 200℃ | 205℃ | 205℃ | 210℃ |
Table 3
The technical scheme provided the embodiment of the present invention above is described in detail, tool used herein
Principle and the embodiment of the embodiment of the present invention are set forth by body example, and the explanation of above example is only
It is adapted to assist in understanding the principle of the embodiment of the present invention；Simultaneously for one of ordinary skill in the art, depend on
According to the embodiment of the present invention, detailed description of the invention and range of application all will change, in sum,
This specification content should not be construed as limitation of the present invention.
Claims (8)
1. a high viscosity adhesive protecting film, it is characterised in that: include A outer layer, B middle level, C middle level and
D internal layer four layers composition；
Described A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30-40 part, metallocene
40-50 part, SEBS 15-20 part, opening auxiliary agent 1-5 part, PPA auxiliary agent 1-5 part；
Described B middle level is identical with layer component in C, by the weight portion of following components is: the poly-second of linear, low density
Alkene 40-60 part, metallocene 25-35 part, SEBS 15-25 part, PPA auxiliary agent 1-5 part；
Described D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 28-35 part, metallocene
45-55, SEBS 15-25 part, uvioresistant auxiliary agent 1-5 part, PPA auxiliary agent 1-5 part.
High viscosity adhesive protecting film the most according to claim 1, it is characterised in that: include A outer layer,
B middle level, C middle level and D internal layer four layers composition；
Described A outer layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 34-36 part, metallocene
42-46 part, SEBS 18-20 part, opening auxiliary agent 1-3 part, PPA auxiliary agent 1-2 part；
Described B middle level is identical with layer component in C, by the weight portion of following components is: the poly-second of linear, low density
Alkene 45-55 part, metallocene 28-32 part, SEBS 18-24 part, PPA auxiliary agent 1-2 part；
Described D internal layer by the weight portion of following components is: linear low density polyethylene (LLDPE) 30-35 part, metallocene
50-55 part, SEBS 15-22 part, uvioresistant auxiliary agent 1-2 part, PPA auxiliary agent 1-2 part.
High viscosity adhesive protecting film the most according to claim 1, it is characterised in that: described opening helps
Agent includes that silicon dioxide and erucamid erucyl amide, the ratio of described silicon dioxide and erucamid erucyl amide are 1.5:1.
High viscosity adhesive protecting film the most according to claim 1, it is characterised in that: described PPA helps
Agent is macromolecule fluoropolymer processing agent.
5. according to a preparation method for the high viscosity adhesive protecting film described in claim 1-4 any one,
It is characterized in that: comprise the following steps:
(1) batch mixing, after the component raw material of every layer is weighed by automatic Weighing mixing system, sealed blended
After be respectively delivered in screw extruder, screw extruder is divided into four layers, every layer component raw material respectively enters
Respective batch mixing 10～12min after four layers, after batch mixing the material of every layer by fully automatic vacuum Material sucking machine pump respectively to
In the transparent storage bin of automatic metering unloading machine, during whole, every layer component raw material is all held apart at state；
(2) extrusion: the compound in each transparent storage bin is added separately in four screw extruders,
Set the temperature in each stage in screw extruder and be extruded into granular pattern masterbatch；
(3) melt filteration: set melt temperature as 241 DEG C, pressure 240Mpa, melts every layer of masterbatch
Melting, every layer of masterbatch after melting enters allotter after filtering each via " candle formula net-changing device ", will be every
The masterbatch distribution of layer molten condition forms T-shaped mould, film forming to different die heads；
(4) molding regulation: the thin film after molding carries out cooling and shaping through cooling device and obtains protecting film, and
By X-ray automatic thickness tester, film thickness is fed back to automatic mold-adjustment system, die gap thickness is carried out
After being uniformly automatically adjusted, film trimming is carried out tension coiling by winding device after cutting, and obtains autohension protection
Film.
The preparation method of high viscosity adhesive protecting film the most according to claim 5, it is characterised in that: institute
The draw ratio stating screw extruder is 32:1.
The preparation method of high viscosity adhesive protecting film the most according to claim 5, it is characterised in that: institute
The co-extrusion interlayer ratio stating in screw extruder four layers is 1.5:3.5:3.5:1.5.
The preparation method of high viscosity adhesive protecting film the most according to claim 5, it is characterised in that: institute
The extrusion coefficient stating in screw extruder four layers is A outer layer: B middle level: C middle level: D internal layer
=4.3:4.5:4.5:4.3.
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| CN109605885A (en) * | 2018-11-15 | 2019-04-12 | 永新股份（黄山）包装有限公司 | A kind of optical glass self-adhesive protective film and its production method |
| EP4306291A1 (en) * | 2022-06-30 | 2024-01-17 | Industria Termoplastica Pavese S.p.A. | Polymeric film for covering cars |
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Application publication date: 20160817 |