CN111761902A - Packaging film for brominated butyl rubber and preparation method thereof - Google Patents
Packaging film for brominated butyl rubber and preparation method thereof Download PDFInfo
- Publication number
- CN111761902A CN111761902A CN202010673616.0A CN202010673616A CN111761902A CN 111761902 A CN111761902 A CN 111761902A CN 202010673616 A CN202010673616 A CN 202010673616A CN 111761902 A CN111761902 A CN 111761902A
- Authority
- CN
- China
- Prior art keywords
- layer
- film
- zone
- temperature
- packaging film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
-
- 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
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- 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
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention aims to solve the problems that the existing packaging film used outside the brominated butyl rubber completely depends on import and is expensive, and discloses a packaging film used for the brominated butyl rubber and a preparation method thereof, wherein the packaging film comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer; the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃; the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 92-98% of high-density polyethylene (HDPE), 1-3% of opening slipping agent and 1-3% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃. The packaging film prepared by the invention fills the domestic production blank, reduces the production and transportation cost, and promotes the rapid development of the brominated butyl rubber industry.
Description
Technical Field
The invention relates to the technical field of packaging films, in particular to a packaging film for brominated butyl rubber and a preparation method thereof.
Background
Brominated butyl rubber (BIIR) is an isobutylene-isoprene copolymer elastomer containing active bromine; the brominated butyl rubber has a main chain basically saturated with butyl rubber, so that the brominated butyl rubber has various performance characteristics of butyl polymers, such as higher physical strength, better vibration damping performance, low permeability, aging resistance and weather resistance; the invention and use of halogenated butyl rubber innerliners have in many respects led to modern radial tires (vacuum tires); the use of such polymers in tire innerliner compounds can improve the holding pressure performance, improve the adhesion between the innerliner and the carcass, and improve the durability of the tire.
The demand for brominated butyl rubber production is increasing, and especially for packaging films for external use, the import of brominated butyl rubber is always required. The brominated butyl rubber is different from butadiene styrene, nitrile butadiene and other rubbers in 'soft' and 'sticky' and has high packaging requirements, and cannot be mixed with a packaging film to change the halogenation performance, so that the service life of the rubber is shortened, and great potential safety hazards exist. Therefore, the packaging film of the brominated butyl rubber also has special requirements, which are as follows:
tensile strength MD/TD (machine direction/transverse direction): not less than 2000/1500 psi;
elongation MD/TD (machine direction/transverse direction): not less than 250/325%;
the tearing strength N/25um is 5-10;
melting point: less than or equal to 110 ℃ (DSC method); the melting point of the film has 2 peak values, the first peak value is between 95 and 100 ℃, and the second peak value is less than or equal to 110 ℃.
Sufficient meltability: the film for packaging the brominated butyl rubber can be directly put into melting along with the rubber when in use, and when the rubber does not reach the melting point temperature, the packaging film is melted and fused into the rubber, so that the rubber characteristic is not influenced; at present, the packaging film depends on import and is expensive, no substitute product exists in China, and a technical blank exists.
Disclosure of Invention
In view of the shortcomings of the prior art, the first object of the present invention is to provide a packaging film for brominated butyl rubber.
The second purpose of the invention is to provide a preparation method of the packaging film for brominated butyl rubber, which has the advantages of simple preparation method and easy operation.
In order to achieve the first object, the invention provides the following technical scheme: a packaging film for brominated butyl rubber comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer;
the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃;
the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 92-98% of high-density polyethylene (HDPE), 1-3% of opening slipping agent and 1-3% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃.
In a preferred embodiment of the present invention, the ethylene-vinyl acetate copolymer (EVA) has a melt index of 1.9g/min and a density of 0.924g/cm 3.
In a preferred embodiment of the present invention, the High Density Polyethylene (HDPE) has a melt index of 2g/min and a density of 0.912g/cm 3.
As a preferred technical scheme of the invention, the type of the mouth-opening slipping agent is SAB-957, SAB-703 or POP 8102.
As a preferred technical scheme of the invention, the master batch is a modified master batch and comprises the following components in percentage by mass: 94-98% of High Density Polyethylene (HDPE), 1-3% of antioxidant 168 and 1-3% of light stabilizer 770.
As a preferred technical scheme of the invention, the thickness of the core layer is 20-80um, the thickness of the outer layer is 10-50um, and the thickness of the inner layer is 10-50 um.
In order to achieve the second object, the invention provides the following technical scheme: a preparation method of a packaging film for brominated butyl rubber comprises the following steps:
s1, stirring the raw materials of the inner layer and the outer layer; respectively putting the raw materials of the inner layer and the outer layer into a stirrer to be uniformly mixed;
s2, preheating preparation of a three-layer co-extrusion film blowing machine; the three-layer co-extrusion film blowing machine works to reach a preset temperature; inner layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-; middle layer: the first zone is 70-110 ℃, the second zone is 80-130 ℃, the third zone is 90-140 ℃, and the screen is changed at 100-; outer layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-;
s3, adding raw materials into a three-layer co-extrusion film blowing machine; correspondingly placing the inner layer raw material and the outer layer raw material obtained in the step 1 into corresponding feed hoppers on a three-layer co-extrusion film blowing machine, and simultaneously placing the raw material of the core layer into corresponding feed hoppers on the three-layer co-extrusion film blowing machine; setting different temperatures on a three-layer co-extrusion film blowing machine in a segmented manner to heat the raw materials, wherein the set temperatures of the three extrusion parts are the same, the temperature of a first zone is 100-135 ℃, the temperature of a second zone is 130-160 ℃, the temperature of a third zone is 145-175 ℃, and the temperature of a fourth zone is 120-180 ℃;
s4, obtaining a sheet-formed base double-layer packaging film; starting a three-layer co-extrusion film blowing machine, pushing each raw material subjected to segmented heating to flow to a forming machine head under the pushing of an internal screw rod, filtering to remove impurities, and extruding a cylindrical film blank through a die; cooling and blowing the film blank into a required film through an air ring, introducing the film blank into a ground winding machine through an upper rotary tractor, and then entering a winding station through lower traction to roll the film blank into a about 300KG film-based double-layer packaging film; the upper rotary tractor solves the problems that the thickness of a diaphragm is not uniform after a film coming out of a film core is cooled and blown by wind, and the tension of printing in the next process is influenced due to the fact that the diaphragm is uneven when the film is wound into a roll;
s5, obtaining a single-sheet film roll finished product; and cutting the sheet-shaped double-layer packaging film which is rolled into a large roll into a single-sheet film roll finished product, and then rolling the single-sheet film roll finished product into a roll by a traction rolling machine.
As the preferred technical scheme of the invention, the traction main roller of the traction winding machine adopts the prismatic pattern with the concave-convex surface, the prismatic pattern is meshed with the traction rubber roller which is wound oppositely, and the regular pattern is extruded on the thin surface of the base-shaped double-layer packaging film through the traction winding machine, so that the base-shaped double-layer packaging film is convenient to separate from other substances.
Compared with the prior art, the invention has the beneficial effects that:
the packaging film for brominated butyl rubber prepared by the invention fills the domestic production blank, reduces the production and transportation cost, and promotes the rapid development of the brominated butyl rubber industry; the upper rotating tractor is used in the preparation process, so that the problem that the thickness of a diaphragm is uneven after the film coming out of a film core is cooled by air and blown, and the tension of printing in the next procedure is influenced due to the fact that the diaphragm is uneven when the film is wound into a roll film is solved.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
The first embodiment is as follows:
a packaging film for brominated butyl rubber comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer;
the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃;
the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 98% of high-density polyethylene (HDPE), 1% of opening slipping agent and 1% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃.
The ethylene-vinyl acetate copolymer (EVA) had a melt index of 1.9g/min and a density of 0.924g/cm 3.
The High Density Polyethylene (HDPE) has a melt index of 2g/min and a density of 0.912g/cm 3.
The type of the mouth-opening slipping agent is SAB-957 or SAB-703 or POP 8102.
The master batch is a modified master batch and comprises the following components in percentage by mass: 94% of High Density Polyethylene (HDPE), 3% of antioxidant 168 and 3% of light stabilizer 770.
The thickness of sandwich layer is 20-80um, and the thickness of skin is 10-50um, and the thickness of inlayer is 10-50 um.
The preparation method of the packaging film for brominated butyl rubber comprises the following steps:
s1, stirring the raw materials of the inner layer and the outer layer; respectively putting the raw materials of the inner layer and the outer layer into a stirrer to be uniformly mixed;
s2, preheating preparation of a three-layer co-extrusion film blowing machine; the three-layer co-extrusion film blowing machine works to reach a preset temperature; inner layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-; middle layer: the first zone is 70-110 ℃, the second zone is 80-130 ℃, the third zone is 90-140 ℃, and the screen is changed at 100-; outer layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-;
s3, adding raw materials into a three-layer co-extrusion film blowing machine; correspondingly placing the inner layer raw material and the outer layer raw material obtained in the step 1 into corresponding feed hoppers on a three-layer co-extrusion film blowing machine, and simultaneously placing the raw material of the core layer into corresponding feed hoppers on the three-layer co-extrusion film blowing machine; setting different temperatures on a three-layer co-extrusion film blowing machine in a segmented manner to heat the raw materials, wherein the set temperatures of the three extrusion parts are the same, the temperature of a first zone is 100-135 ℃, the temperature of a second zone is 130-160 ℃, the temperature of a third zone is 145-175 ℃, and the temperature of a fourth zone is 120-180 ℃;
s4, obtaining a sheet-formed base double-layer packaging film; starting a three-layer co-extrusion film blowing machine, pushing each raw material subjected to segmented heating to flow to a forming machine head under the pushing of an internal screw rod, filtering to remove impurities, and extruding a cylindrical film blank through a die; cooling and blowing the film blank into a required film through an air ring, introducing the film blank into a ground winding machine through an upper rotary tractor, and then entering a winding station through lower traction to roll the film blank into a about 300KG film-based double-layer packaging film; the upper rotary tractor solves the problem that the film coming out of a film core is cooled by air and blown to have uneven film thickness, and the tension of the printing of the next procedure is influenced due to the fact that the film is uneven when the film is wound into a roll.
S5, obtaining a single-sheet film roll finished product; and cutting the sheet-shaped double-layer packaging film which is rolled into a large roll into a single-sheet film roll finished product, and then rolling the single-sheet film roll finished product into a roll by a traction rolling machine.
In the step S5, the traction main roller of the traction winding machine adopts a prismatic pattern with a concave-convex surface, the prismatic pattern is meshed with the traction rubber roller which is wound oppositely, and the base-shaped double-layer packaging film is extruded with a regular pattern on the thin surface through the traction winding machine, so that the base-shaped double-layer packaging film is convenient to separate from other substances.
Example two
A packaging film for brominated butyl rubber comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer;
the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃;
the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 95% of high-density polyethylene (HDPE), 2% of opening slipping agent and 3% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃.
The ethylene-vinyl acetate copolymer (EVA) had a melt index of 1.9g/min and a density of 0.924g/cm 3.
The High Density Polyethylene (HDPE) has a melt index of 2g/min and a density of 0.912g/cm 3.
The type of the mouth-opening slipping agent is SAB-957 or SAB-703 or POP 8102.
The master batch is a modified master batch and comprises the following components in percentage by mass: 96% of High Density Polyethylene (HDPE), 2% of antioxidant 168 and 2% of light stabilizer 770.
The thickness of sandwich layer is 20-80um, and the thickness of skin is 10-50um, and the thickness of inlayer is 10-50 um.
The preparation method of the packaging film for brominated butyl rubber comprises the following steps:
s1, stirring the raw materials of the inner layer and the outer layer; respectively putting the raw materials of the inner layer and the outer layer into a stirrer to be uniformly mixed;
s2, preheating preparation of a three-layer co-extrusion film blowing machine; the three-layer co-extrusion film blowing machine works to reach a preset temperature; inner layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-; middle layer: the first zone is 70-110 ℃, the second zone is 80-130 ℃, the third zone is 90-140 ℃, and the screen is changed at 100-; outer layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-;
s3, adding raw materials into a three-layer co-extrusion film blowing machine; correspondingly placing the inner layer raw material and the outer layer raw material obtained in the step 1 into corresponding feed hoppers on a three-layer co-extrusion film blowing machine, and simultaneously placing the raw material of the core layer into corresponding feed hoppers on the three-layer co-extrusion film blowing machine; setting different temperatures on a three-layer co-extrusion film blowing machine in a segmented manner to heat the raw materials, wherein the set temperatures of the three extrusion parts are the same, the temperature of a first zone is 100-135 ℃, the temperature of a second zone is 130-160 ℃, the temperature of a third zone is 145-175 ℃, and the temperature of a fourth zone is 120-180 ℃;
s4, obtaining a sheet-formed base double-layer packaging film; starting a three-layer co-extrusion film blowing machine, pushing each raw material subjected to segmented heating to flow to a forming machine head under the pushing of an internal screw rod, filtering to remove impurities, and extruding a cylindrical film blank through a die; cooling and blowing the film blank into a required film through an air ring, introducing the film blank into a ground winding machine through an upper rotary tractor, and then entering a winding station through lower traction to roll the film blank into a about 300KG film-based double-layer packaging film; the upper rotary tractor solves the problems that the thickness of a diaphragm is not uniform after a film coming out of a film core is cooled and blown by wind, and the tension of printing in the next process is influenced due to the fact that the diaphragm is uneven when the film is wound into a roll;
s5, obtaining a single-sheet film roll finished product; and cutting the sheet-shaped double-layer packaging film which is rolled into a large roll into a single-sheet film roll finished product, and then rolling the single-sheet film roll finished product into a roll by a traction rolling machine.
In the step S5, the traction main roller of the traction winding machine adopts a prismatic pattern with a concave-convex surface, the prismatic pattern is meshed with the traction rubber roller which is wound oppositely, and the base-shaped double-layer packaging film is extruded with a regular pattern on the thin surface through the traction winding machine, so that the base-shaped double-layer packaging film is convenient to separate from other substances.
EXAMPLE III
A packaging film for brominated butyl rubber comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer;
the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃;
the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 92% of high-density polyethylene (HDPE), 3% of opening slipping agent and 3% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃.
The ethylene-vinyl acetate copolymer (EVA) had a melt index of 1.9g/min and a density of 0.924g/cm 3.
The High Density Polyethylene (HDPE) has a melt index of 2g/min and a density of 0.912g/cm 3.
The type of the mouth-opening slipping agent is SAB-957 or SAB-703 or POP 8102.
The master batch is a modified master batch and comprises the following components in percentage by mass: 98 percent of High Density Polyethylene (HDPE), 1 percent of antioxidant 168 and 1 percent of light stabilizer 770.
The thickness of sandwich layer is 20-80um, and the thickness of skin is 10-50um, and the thickness of inlayer is 10-50 um.
The preparation method of the packaging film for brominated butyl rubber comprises the following steps:
s1, stirring the raw materials of the inner layer and the outer layer; respectively putting the raw materials of the inner layer and the outer layer into a stirrer to be uniformly mixed;
s2, preheating preparation of a three-layer co-extrusion film blowing machine; the three-layer co-extrusion film blowing machine works to reach a preset temperature; inner layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-; middle layer: the first zone is 70-110 ℃, the second zone is 80-130 ℃, the third zone is 90-140 ℃, and the screen is changed at 100-; outer layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-;
s3, adding raw materials into a three-layer co-extrusion film blowing machine; correspondingly placing the inner layer raw material and the outer layer raw material obtained in the step 1 into corresponding feed hoppers on a three-layer co-extrusion film blowing machine, and simultaneously placing the raw material of the core layer into corresponding feed hoppers on the three-layer co-extrusion film blowing machine; setting different temperatures on a three-layer co-extrusion film blowing machine in a segmented manner to heat the raw materials, wherein the set temperatures of the three extrusion parts are the same, the temperature of a first zone is 100-135 ℃, the temperature of a second zone is 130-160 ℃, the temperature of a third zone is 145-175 ℃, and the temperature of a fourth zone is 120-180 ℃;
s4, obtaining a sheet-formed base double-layer packaging film; starting a three-layer co-extrusion film blowing machine, pushing each raw material subjected to segmented heating to flow to a forming machine head under the pushing of an internal screw rod, filtering to remove impurities, and extruding a cylindrical film blank through a die; cooling and blowing the film blank into a required film through an air ring, introducing the film blank into a ground winding machine through an upper rotary tractor, and then entering a winding station through lower traction to roll the film blank into a about 300KG film-based double-layer packaging film; the upper rotary tractor solves the problems that the thickness of a diaphragm is not uniform after a film coming out of a film core is cooled and blown by wind, and the tension of printing in the next process is influenced due to the fact that the diaphragm is uneven when the film is wound into a roll;
s5, obtaining a single-sheet film roll finished product; and cutting the sheet-shaped double-layer packaging film which is rolled into a large roll into a single-sheet film roll finished product, and then rolling the single-sheet film roll finished product into a roll by a traction rolling machine.
In the step S5, the traction main roller of the traction winding machine adopts a prismatic pattern with a concave-convex surface, the prismatic pattern is meshed with the traction rubber roller which is wound oppositely, and the base-shaped double-layer packaging film is extruded with a regular pattern on the thin surface through the traction winding machine, so that the base-shaped double-layer packaging film is convenient to separate from other substances.
The packaging film for brominated butyl rubber prepared by the invention fills the domestic production blank, reduces the production and transportation cost, and promotes the rapid development of the brominated butyl rubber industry; the upper rotating tractor is used in the preparation process, so that the problem that the thickness of a diaphragm is uneven after the film coming out of a film core is cooled by air and blown, and the tension of printing in the next procedure is influenced due to the fact that the diaphragm is uneven when the film is wound into a roll film is solved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations are possible in light of the above teachings, for example, by routine/routine replacement of various elements of the invention, within the purview of one of ordinary skill in the art and all such modifications and variations are intended to fall within the scope of the invention as defined by the appended claims.
Claims (8)
1. A packaging film for brominated butyl rubber comprises an inner layer, an outer layer and a core layer arranged between the inner layer and the outer layer;
the core layer is ethylene-vinyl acetate copolymer (EVA), and the melting point range of the ethylene-vinyl acetate copolymer (EVA) is 60-105 ℃;
the outer layer and the inner layer are made of the same raw materials, and the raw materials comprise the following components in percentage by mass: 92-98% of high-density polyethylene (HDPE), 1-3% of opening slipping agent and 1-3% of master batch, wherein the melting point of the high-density polyethylene (HDPE) is 110 ℃.
2. The packaging film for brominated butyl rubber according to claim 1, wherein: the ethylene-vinyl acetate copolymer (EVA) had a melt index of 1.9g/min and a density of 0.924g/cm 3.
3. The packaging film for brominated butyl rubber according to claim 1, wherein: the High Density Polyethylene (HDPE) has a melt index of 2g/min and a density of 0.912g/cm 3.
4. The packaging film for brominated butyl rubber according to claim 1, wherein: the type of the mouth-opening slipping agent is SAB-957 or SAB-703 or POP 8102.
5. The packaging film for brominated butyl rubber according to claim 1, wherein: the master batch is a modified master batch and comprises the following components in percentage by mass: 94-98% of High Density Polyethylene (HDPE), 1-3% of antioxidant 168 and 1-3% of light stabilizer 770.
6. The packaging film for brominated butyl rubber according to claim 1, wherein: the thickness of sandwich layer is 20-80um, and the thickness of skin is 10-50um, and the thickness of inlayer is 10-50 um.
7. The method of claim 1, wherein the method comprises the steps of: the method comprises the following steps:
s1, stirring the raw materials of the inner layer and the outer layer; respectively putting the raw materials of the inner layer and the outer layer into a stirrer to be uniformly mixed;
s2, preheating preparation of a three-layer co-extrusion film blowing machine; the three-layer co-extrusion film blowing machine works to reach a preset temperature; inner layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-; middle layer: the first zone is 70-110 ℃, the second zone is 80-130 ℃, the third zone is 90-140 ℃, and the screen is changed at 100-; outer layer: the temperature of the first zone is 80-120 ℃, the temperature of the second zone is 90-140 ℃, the temperature of the third zone is 110-;
s3, adding raw materials into a three-layer co-extrusion film blowing machine; correspondingly placing the inner layer raw material and the outer layer raw material obtained in the step 1 into corresponding feed hoppers on a three-layer co-extrusion film blowing machine, and simultaneously placing the raw material of the core layer into corresponding feed hoppers on the three-layer co-extrusion film blowing machine; setting different temperatures on a three-layer co-extrusion film blowing machine in a segmented manner to heat the raw materials, wherein the set temperatures of the three extrusion parts are the same, the temperature of a first zone is 100-135 ℃, the temperature of a second zone is 130-160 ℃, the temperature of a third zone is 145-175 ℃, and the temperature of a fourth zone is 120-180 ℃;
s4, obtaining a sheet-formed base double-layer packaging film; starting a three-layer co-extrusion film blowing machine, pushing each raw material subjected to segmented heating to flow to a forming machine head under the pushing of an internal screw rod, filtering to remove impurities, and extruding a cylindrical film blank through a die; cooling and blowing the film blank into a required film through an air ring, introducing the film blank into a ground winding machine through an upper rotary tractor, and then entering a winding station through lower traction to roll the film blank into a about 300KG film-based double-layer packaging film;
s5, obtaining a single-sheet film roll finished product; and cutting the sheet-shaped double-layer packaging film which is rolled into a large roll into a single-sheet film roll finished product, and then rolling the single-sheet film roll finished product into a roll by a traction rolling machine.
8. The method of claim 7, wherein the method comprises the steps of: the traction main roller of the traction winding machine adopts a prismatic pattern with a concave-convex surface, the prismatic pattern is meshed with the traction rubber roller which is wound oppositely, and regular patterns are extruded on the thin surface of the base-shaped double-layer packaging film through the traction winding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010673616.0A CN111761902A (en) | 2020-07-14 | 2020-07-14 | Packaging film for brominated butyl rubber and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010673616.0A CN111761902A (en) | 2020-07-14 | 2020-07-14 | Packaging film for brominated butyl rubber and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111761902A true CN111761902A (en) | 2020-10-13 |
Family
ID=72725180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010673616.0A Pending CN111761902A (en) | 2020-07-14 | 2020-07-14 | Packaging film for brominated butyl rubber and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111761902A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565720A (en) * | 1983-07-27 | 1986-01-21 | Idemitsu Petrochemical Co., Ltd. | Packaging bag |
| CN102744943A (en) * | 2011-04-22 | 2012-10-24 | 白山市喜丰塑业有限公司 | Method for manufacturing agricultural film coated by high performance polyolefin |
| CN102816368A (en) * | 2012-09-05 | 2012-12-12 | 江苏万乐复合材料有限公司 | Easily-stripping polyethylene packaging film |
| CN111331980A (en) * | 2020-03-19 | 2020-06-26 | 青岛海益塑业有限责任公司 | Low-melting-point film, preparation method and application thereof |
-
2020
- 2020-07-14 CN CN202010673616.0A patent/CN111761902A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4565720A (en) * | 1983-07-27 | 1986-01-21 | Idemitsu Petrochemical Co., Ltd. | Packaging bag |
| CN102744943A (en) * | 2011-04-22 | 2012-10-24 | 白山市喜丰塑业有限公司 | Method for manufacturing agricultural film coated by high performance polyolefin |
| CN102816368A (en) * | 2012-09-05 | 2012-12-12 | 江苏万乐复合材料有限公司 | Easily-stripping polyethylene packaging film |
| CN111331980A (en) * | 2020-03-19 | 2020-06-26 | 青岛海益塑业有限责任公司 | Low-melting-point film, preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4589615B2 (en) | Inner liner for pneumatic tire and pneumatic tire | |
| CN103249546A (en) | Strip, method for producing same, and method for producing pneumatic tire | |
| CN102463845B (en) | Pneumatic tire with tie layer and method of making same | |
| EP0732224A1 (en) | Pneumatic tire and process of production thereof | |
| WO2012060130A1 (en) | Strip and process for producing same, and process for manufacturing pneumatic tire | |
| CN105764685A (en) | Laminate of film and rubber composition, and tire including same | |
| CN110696461B (en) | High-heat-seal-strength puncture-resistant BOPP film and preparation method thereof | |
| CN110696454A (en) | High-elongation polyester modified alloy film for waterproof coiled material and preparation method thereof | |
| CN109278388B (en) | Extinction type high-barrier biaxially-oriented polypropylene cold-seal base film and preparation method thereof | |
| CN111944213B (en) | Semi-steel radial tire crown strip rubber material suitable for extrusion method and preparation process thereof | |
| CN111761902A (en) | Packaging film for brominated butyl rubber and preparation method thereof | |
| CN102248728A (en) | Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof | |
| JP6262141B2 (en) | Winding multilayer tire inner liner product, pneumatic tire, and manufacturing method of winding multilayer tire inner liner product | |
| JP4368413B2 (en) | Method for producing low-permeability rubber laminate using multilayer film of low-permeability resin | |
| CN110696455B (en) | Toughening type polyester matrix film for waterproof coiled material and preparation method thereof | |
| JPS6026009B2 (en) | Method for producing cylindrical biaxially stretched sheet or film of thermoplastic resin containing inorganic filler | |
| CN101415538A (en) | Process for manufacturing pneumatic tire | |
| CN107936392B (en) | Production process of mixed rubber material for tire bladder | |
| CN111844978A (en) | Halogenated butyl rubber packaging film and production process thereof | |
| CN213108874U (en) | Novel puncture-proof folding tire | |
| KR20130004146A (en) | Film for tire inner-liner and preparation method thereof | |
| JP2010260280A (en) | Laminate, method of manufacturing the same, and pneumatic tire | |
| CN113861577A (en) | Production process capable of automatically repairing butyl rubber inner tube | |
| JP5783806B2 (en) | Tire and method for manufacturing the tire | |
| CN112708180B (en) | Tire and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201013 |
|
| RJ01 | Rejection of invention patent application after publication |