CN111674133A - High-friction biaxially oriented polyamide film and preparation method thereof - Google Patents

High-friction biaxially oriented polyamide film and preparation method thereof Download PDF

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Publication number
CN111674133A
CN111674133A CN202010551031.1A CN202010551031A CN111674133A CN 111674133 A CN111674133 A CN 111674133A CN 202010551031 A CN202010551031 A CN 202010551031A CN 111674133 A CN111674133 A CN 111674133A
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friction
polyamide
polyamide resin
film
biaxially oriented
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Chinese (zh)
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王彩霞
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Kunshan Yuncheng Plastic Industry Co ltd
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Kunshan Yuncheng Plastic Industry Co ltd
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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
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/005—Processes for mixing polymers
    • 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
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • 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
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    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. 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
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B32B2038/0028—Stretching, elongating
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • 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
    • B32B2307/514—Oriented
    • B32B2307/518—Oriented bi-axially
    • 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
    • B32B2307/70—Other properties
    • B32B2307/744—Non-slip, anti-slip
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
    • 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
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
    • 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
    • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2477/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • 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
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    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • 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
    • C08K5/20—Carboxylic acid amides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Abstract

The invention relates to the technical field of films, in particular to a high-friction biaxially oriented polyamide film which comprises a first film layer, a core layer and a second film layer, wherein the first film layer is fixedly connected to the top of the core layer, the second film layer is fixedly connected to the bottom of the core layer, and the first film layer comprises the following components in parts by mass: 8-15% of ultrahigh friction master batch and 85-92% of polyamide resin, wherein the core layer comprises the following components in percentage by mass: 100% of polyamide resin, wherein the second film layer comprises the following components in percentage by mass: 3 to 6 percent of anti-sticking master batch and 94 to 97 percent of polyamide resin, and also relates to a preparation method of the high-friction biaxially oriented polyamide film. The invention can solve the problem of film breaking caused by reducing the content of the opening agent to improve friction in the prior art, the soft polyester crosslinked particles and the polyamide resin interface are well combined, and the polyamide film prepared from the ultrahigh-friction master batch has low haze and high light transmittance.

Description

High-friction biaxially oriented polyamide film and preparation method thereof
Technical Field
The invention relates to the technical field of films, in particular to a high-friction biaxially oriented polyamide film and a preparation method thereof.
Background
Biaxially oriented polyamide films (BOPA) are obtained from various nylon raw materials by a biaxially oriented polymerization process, and have many excellent properties that many films lack, for example, biaxially oriented polyamide films (BOPA) have excellent mechanical strength, barrier properties, puncture resistance, transparency, oil resistance, chemical solvent resistance, and nontoxicity, and thus are widely used in the field of food packaging, and from the recent development trend, currently, polyamide/polyethylene (PA/PE) structure packaging bags are replacing kraft paper bags and being applied to rice packaging due to their excellent mechanical strength, barrier properties, puncture resistance, and the like, and biaxially oriented polyamides have attracted attention in industrial product packaging. The rice bag package and the industrial product package are required to be stacked, stored and transported, however, the surface friction coefficient COF of the common biaxially oriented polyamide film is smaller, under normal conditions, the friction coefficient COF of a non-corona-treated surface of the synchronously oriented polyamide film is less than or equal to 0.5, the friction coefficient COF of a corona-treated surface of the synchronously oriented polyamide film is less than or equal to 0.6, the friction coefficient COF of a stepwise-oriented polyamide film is less than or equal to 0.7, and the friction coefficient COF of a corona-treated surface of the synchronously oriented polyamide film is less than or equal to 0.8, in the actual production process, the addition amount of the anti-sticking master batch is reduced, the friction coefficient can be properly increased, but the amplitude is extremely small, and the risk of film fracture is increased, so that the rice and industrial products adopting the biaxially oriented polyamide composite packaging bag often slide down in the stacking process due to the small surface friction coefficient, increasing the production cost of the product and even causing serious consequences.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the high-friction biaxially oriented polyamide film and the preparation method thereof, which have the advantage of high friction and solve the problems that rice and industrial products adopting biaxially oriented polyamide composite packaging bags slide down in the stacking process, the working efficiency is reduced, the production cost of the products is increased, and even serious consequences are caused due to too small surface friction coefficient of common biaxially oriented polyamide films.
(II) technical scheme
In order to achieve the technical problem, the invention provides a high-friction biaxially oriented polyamide film, which comprises a first film layer, a core layer and a second film layer, wherein the first film layer is fixedly connected to the top of the core layer, and the second film layer is fixedly connected to the bottom of the core layer;
the first film layer comprises the following components in percentage by mass: 8-15% of ultrahigh friction master batch and 85-92% of polyamide resin, wherein the core layer comprises the following components in percentage by mass: 100% of polyamide resin, wherein the second film layer comprises the following components in percentage by mass: 3 to 6 percent of anti-sticking master batch and 94 to 97 percent of polyamide resin.
Further, the ultrahigh friction master batch is composed of 5% -8% of soft polyester cross-linked particles and 92% -95% of polyamide resin.
Further, the soft polyester crosslinked particles are one of polybutylene adipate, polybutylene succinate, polybutylene carbonate, polybutylene adipate and polybutylene terephthalate.
Further, the average particle size of the soft polyester crosslinked particles is 8-12 μm.
Further, the anti-sticking master batch comprises the following components in parts by mass: 5 to 8 percent of opening agent, 0.5 to 3 percent of slipping agent and 89 to 95 percent of polyamide resin.
Further, the opening agent is one of silicon dioxide, cross-linked particles and calcium carbonate, and the slipping agent is one of erucamide and oleamide.
Further, the polyamide resin is one of nylon 6, nylon 66, nylon 46, nylon 56, nylon 10, nylon 12, nylon 610, nylon 6, nylon 66, and a copolymer.
A preparation method of a high-friction biaxially oriented polyamide film comprises the following steps:
1) mixing 5-8% of soft polyester crosslinked particles and 92-95% of polyamide resin, adding the mixture into an extruder with the temperature of 185-285 ℃ for melting, wherein the rotating speed of the extruder is preferably 400-550 r/min, dividing the mixture into strips through a porous die head, cooling the strips in a water tank with the water temperature of 30-55 ℃, cutting the strips through a granulator, sucking the strips into an oven with the temperature of 60-90 ℃ for drying, and thus obtaining the ultrahigh-friction master batch;
2) mixing 5-8% of an opening agent, 0.5-3% of a slipping agent and 89-95% of polyamide resin to obtain an anti-sticking master batch;
3) respectively melting 8-15% of ultrahigh friction master batch and 85-92% of polyamide resin of a first film layer, 100% of polyamide resin of a core layer, 3-6% of anti-sticking master batch and 94-97% of polyamide resin of a second film layer by feeding scales at 220-285 ℃, uniformly flowing out through a t-shaped die head, and cooling on a quenching roller at 25-55 ℃ to form an unstretched sheet;
4) cooling the polyamide hot film to the temperature range of 5-40 ℃, controlling the temperature range of 35-75 ℃ of the polyamide film from the sheet casting process to stretch, controlling the longitudinal stretching ratio to the range of 250-350%, controlling the temperature range of 40-130 ℃ of the polyamide film from the longitudinal stretching process to stretch, controlling the transverse stretching ratio to the range of 300-400%, controlling the temperature range of 180-230 ℃ of the polyamide film from the transverse stretching process to shape, and obtaining the high-friction biaxially oriented polyamide film.
(III) advantageous effects
The invention provides a high-friction biaxially oriented polyamide film and a preparation method thereof, and the high-friction biaxially oriented polyamide film has the following beneficial effects:
1. according to the high-friction biaxially oriented polyamide film and the preparation method thereof, the COF (chip on film) of the polyamide film prepared from the ultrahigh-friction master batch is more than or equal to 1.0, the polyamide film is particularly suitable for packaging foods, industries and electronic products needing to be stacked, the application field of the polyamide film is expanded, and meanwhile, the problem of film breakage caused by friction improvement by reducing the content of a shedding agent in the prior art can be solved.
2. According to the high-friction biaxially oriented polyamide film and the preparation method thereof, the soft polyester cross-linked particles can be easily dispersed, so that the dependency of the preparation of the ultrahigh-friction master batch on equipment and a process is small, and the problems of crystal and black spots on the film surface caused by poor dispersion of the opening agent can be avoided.
3. According to the high-friction biaxially oriented polyamide film and the preparation method thereof, the soft polyester cross-linked particles are well combined with the polyamide resin interface, and the polyamide film prepared from the ultrahigh-friction master batch is low in haze and high in light transmittance.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. a first film layer; 2. a core layer; 3. a second film layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention will now be further illustrated with reference to figure 1 and examples,
the utility model provides a high friction biaxial stretching polyamide film, includes first rete 1, sandwich layer 2 and second rete 3, and first rete 1 fixed connection is at the top of sandwich layer 2, and second rete 3 fixed connection is at the bottom of sandwich layer 2.
The first film layer 1 comprises the following components in percentage by mass: 8-15% of ultrahigh friction master batch and 85-92% of polyamide resin, wherein the core layer 2 comprises the following components in percentage by mass: the polyamide resin is 100%, and the second film layer 3 comprises the following components in percentage by mass: 3-6% of anti-sticking master batch and 94-97% of polyamide resin, wherein the ultrahigh friction master batch consists of 5-8% of soft polyester crosslinked particles and 92-95% of polyamide resin, the soft polyester crosslinked particles are one of polybutylene adipate, polybutylene succinate, polybutylene carbonate, polybutylene adipate and polybutylene terephthalate, and the average particle size of the soft polyester crosslinked particles is 8-12 mu m.
The anti-sticking master batch comprises the following components in percentage by mass: 5-8% of an opening agent, 0.5-3% of a slipping agent and 89-95% of polyamide resin, wherein the opening agent is one of silicon dioxide, cross-linked particles and calcium carbonate, the slipping agent is one of erucamide and oleamide, and the polyamide resin is one of nylon 6, nylon 66, nylon 46, nylon 56, nylon 10, nylon 12, nylon 610, nylon 6, nylon 66 and a copolymer.
The first embodiment is as follows:
a preparation method of a high-friction biaxially oriented polyamide film comprises the following steps:
1) mixing 5% of soft polyester crosslinked particles and 92% of polyamide resin, adding the mixture into an extruder with the temperature of 185 ℃ for melting after mixing, wherein the rotating speed of the extruder is preferably 400r/min, dividing the mixture into strips through a porous die head, cooling the strips in a water tank with the water temperature of 30 ℃, granulating the strips through a granulator, and sucking the strips into an oven with the temperature of 60 ℃ for drying to obtain the ultrahigh-friction master batch, wherein the water content of the master batch in the water tank is 1000 ppm;
2) mixing 5% of opening agent, 0.5% of slipping agent and 89% of polyamide resin to obtain an anti-sticking master batch;
3) respectively melting 8% of the ultrahigh friction master batch and 85% of polyamide resin of the first film layer, 100% of the polyamide resin of the core layer and 3% of the anti-sticking master batch and 94% of polyamide resin of the second film layer by feeding scales at 220 ℃ through respective extruders, uniformly flowing out through a t-shaped die, and cooling on a chill roll at 25 ℃ to form an unstretched sheet;
4) the polyamide membrane from the casting step is controlled to be stretched in the temperature range of 190 ℃, the longitudinal stretching ratio is controlled to be in the range of 250%, the polyamide membrane from the longitudinal stretching step is controlled to be stretched in the temperature range of 90 ℃, the transverse stretching ratio is controlled to be in the range of 300%, and the polyamide membrane from the transverse stretching step is controlled to be in the temperature range of 180 ℃ for shaping, so that the high-friction biaxially oriented polyamide film can be obtained.
Example two:
a preparation method of a high-friction biaxially oriented polyamide film comprises the following steps:
1) mixing 7% of soft polyester crosslinked particles and 93% of polyamide resin, adding the mixture into an extruder with the temperature of 250 ℃ for melting after mixing, wherein the rotating speed of the extruder is preferably 500r/min, stripping the mixture through a porous die head, cooling the mixture in a water tank with the water temperature of 50 ℃, granulating the mixture through a granulator, and sucking the mixture into an oven with the temperature of 80 ℃ for drying to obtain the ultrahigh-friction master batch, wherein the water content of the master batch in the water tank is 1500 ppm;
2) mixing 6% of an opening agent, 2% of a slipping agent and 90% of polyamide resin to obtain an anti-sticking master batch;
3) respectively melting 10% of the ultrahigh friction master batch and 76% of polyamide resin of the first film layer, 100% of the polyamide resin of the core layer and 5% of the anti-sticking master batch and 95% of polyamide resin of the second film layer by feeding scales at the temperature of 250 ℃, uniformly flowing out through a t-shaped die, and cooling on a chill roll at the temperature of 30 ℃ to form an unstretched sheet;
4) the polyamide membrane from the casting step is controlled to be stretched in a temperature range of 230 ℃, the longitudinal stretching ratio is controlled to be 300 percent, the polyamide membrane from the longitudinal stretching step is controlled to be stretched in a temperature range of 200 ℃, the transverse stretching ratio is controlled to be 350 percent, and the polyamide membrane from the transverse stretching step is controlled to be shaped in a temperature range of 200 ℃, so that the high-friction biaxially oriented polyamide film can be obtained.
Example three:
a preparation method of a high-friction biaxially oriented polyamide film comprises the following steps:
1) mixing 8% of soft polyester crosslinked particles and 95% of polyamide resin, adding the mixture into an extruder at 285 ℃ for melting, wherein the rotating speed of the extruder is preferably 550r/min, dividing the mixture into strips through a porous die head, cooling the strips in a water tank with the water temperature of 55 ℃, granulating the strips through a granulator, and sucking the strips into an oven at 90 ℃ to dry so as to obtain the ultrahigh-friction master batch, wherein the water content of the master batch in the water tank is 1500 ppm;
2) mixing 8% of opening agent, 3% of slipping agent and 95% of polyamide resin to obtain an anti-sticking master batch;
3) respectively melting 15% of the ultrahigh friction master batch and 92% of polyamide resin of the first film layer, 100% of the polyamide resin of the core layer and 6% of the anti-sticking master batch and 97% of the polyamide resin of the second film layer by feeding scales at 285 ℃, uniformly flowing out through a t-shaped die, and cooling on a chill roll at 55 ℃ to form an unstretched sheet;
4) the polyamide membrane from the casting step is controlled to be stretched in a temperature range of 250 ℃, the longitudinal stretching ratio is controlled to be 350 percent, the polyamide membrane from the longitudinal stretching step is controlled to be stretched in a temperature range of 250 ℃, the transverse stretching ratio is controlled to be 400 percent, and the polyamide membrane from the transverse stretching step is controlled to be shaped in a temperature range of 230 ℃, so that the high-friction biaxially oriented polyamide film can be obtained.
In conclusion, the high-friction biaxially oriented polyamide film and the preparation method thereof have the advantages that the COF (chip on film) of the polyamide film prepared from the ultrahigh-friction master batch is more than or equal to 1.0, the polyamide film is particularly suitable for packaging foods, industries and electronic products needing to be stacked, the application field of the polyamide film is expanded, and meanwhile, the problem of film breakage caused by friction improvement by reducing the content of the opening agent in the prior art can be solved.
According to the high-friction biaxially oriented polyamide film and the preparation method thereof, the soft polyester cross-linked particles can be easily dispersed, so that the dependency of the preparation of the ultrahigh-friction master batch on equipment and a process is small, and the problems of crystal and black spots on the film surface caused by poor dispersion of the opening agent can be avoided.
According to the high-friction biaxially oriented polyamide film and the preparation method thereof, the soft polyester cross-linked particles are well combined with the polyamide resin interface, and the polyamide film prepared from the ultrahigh-friction master batch is low in haze and high in light transmittance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A high friction biaxially oriented polyamide film comprising a first film layer (1), a core layer (2) and a second film layer (3), characterized in that: the first film layer (1) is fixedly connected to the top of the core layer (2), and the second film layer (3) is fixedly connected to the bottom of the core layer (2);
the first film layer (1) comprises the following components in percentage by mass: 8% -15% of ultrahigh friction master batch and 85% -92% of polyamide resin, wherein the core layer (2) comprises the following components in percentage by mass: 100% of polyamide resin, wherein the second film layer (3) comprises the following components in percentage by mass: 3 to 6 percent of anti-sticking master batch and 94 to 97 percent of polyamide resin.
2. A high-friction biaxially oriented polyamide film according to claim 1, wherein: the ultrahigh friction master batch consists of 5-8% of soft polyester crosslinked particles and 92-95% of polyamide resin.
3. A high-friction biaxially oriented polyamide film according to claim 2, wherein: the soft polyester crosslinked particles are one of polybutylene adipate, polybutylene succinate, polybutylene carbonate, polybutylene adipate and polybutylene terephthalate.
4. A high-friction biaxially oriented polyamide film according to claim 2, wherein: the average particle size of the soft polyester crosslinked particles is 8-12 mu m.
5. A high-friction biaxially oriented polyamide film according to claim 1, wherein: the anti-sticking master batch comprises the following components in parts by mass: 5 to 8 percent of opening agent, 0.5 to 3 percent of slipping agent and 89 to 95 percent of polyamide resin.
6. A high-friction biaxially oriented polyamide film according to claim 5, wherein: the opening agent is one of silicon dioxide, cross-linked particles and calcium carbonate, and the slipping agent is one of erucamide and oleamide.
7. A high-friction biaxially oriented polyamide film according to claim 1, wherein: the polyamide resin is one of nylon 6, nylon 66, nylon 46, nylon 56, nylon 10, nylon 12, nylon 610, nylon 6, nylon 66 and copolymer.
8. A preparation method of a high-friction biaxially oriented polyamide film is characterized by comprising the following steps:
1) mixing 5-8% of soft polyester crosslinked particles and 92-95% of polyamide resin, adding the mixture into an extruder with the temperature of 185-285 ℃ for melting, wherein the rotating speed of the extruder is preferably 400-550 r/min, dividing the mixture into strips through a porous die head, cooling the strips in a water tank with the water temperature of 30-55 ℃, cutting the strips through a granulator, sucking the strips into an oven with the temperature of 60-90 ℃ for drying, and thus obtaining the ultrahigh-friction master batch;
2) mixing 5-8% of an opening agent, 0.5-3% of a slipping agent and 89-95% of polyamide resin to obtain an anti-sticking master batch;
3) respectively melting 8-15% of ultrahigh friction master batch and 85-92% of polyamide resin of a first film layer, 100% of polyamide resin of a core layer, 3-6% of anti-sticking master batch and 94-97% of polyamide resin of a second film layer by feeding scales at 220-285 ℃, uniformly flowing out through a t-shaped die head, and cooling on a quenching roller at 25-55 ℃ to form an unstretched sheet;
4) controlling the temperature of the polyamide membrane from the casting process to be 190-250 ℃ for stretching, controlling the longitudinal stretching ratio to be 250-350%, controlling the temperature of the polyamide membrane from the longitudinal stretching process to be 90-250 ℃ for stretching, controlling the transverse stretching ratio to be 300-400%, controlling the temperature of the polyamide membrane from the transverse stretching process to be 180-230 ℃ for shaping, and obtaining the high-friction biaxially oriented polyamide film.
CN202010551031.1A 2020-06-17 2020-06-17 High-friction biaxially oriented polyamide film and preparation method thereof Pending CN111674133A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278298A (en) * 2023-05-10 2023-06-23 内蒙古大汗青洲环保科技有限公司 PBAT composite material with adjustable surface friction coefficient and preparation process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010253712A (en) * 2009-04-22 2010-11-11 Toyobo Co Ltd Laminated biaxial stretched polyamide-based film
TW201934343A (en) * 2018-01-17 2019-09-01 日商東洋紡股份有限公司 Multi-layer stretched polyamide film
CN110540747A (en) * 2019-10-12 2019-12-06 厦门长塑实业有限公司 Ultrahigh-friction master batch and preparation method thereof, ultrahigh-friction polyamide film and preparation method thereof
CN110843310A (en) * 2019-11-11 2020-02-28 厦门长塑实业有限公司 Biaxially oriented tactile polyamide film and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010253712A (en) * 2009-04-22 2010-11-11 Toyobo Co Ltd Laminated biaxial stretched polyamide-based film
TW201934343A (en) * 2018-01-17 2019-09-01 日商東洋紡股份有限公司 Multi-layer stretched polyamide film
CN110540747A (en) * 2019-10-12 2019-12-06 厦门长塑实业有限公司 Ultrahigh-friction master batch and preparation method thereof, ultrahigh-friction polyamide film and preparation method thereof
CN110843310A (en) * 2019-11-11 2020-02-28 厦门长塑实业有限公司 Biaxially oriented tactile polyamide film and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116278298A (en) * 2023-05-10 2023-06-23 内蒙古大汗青洲环保科技有限公司 PBAT composite material with adjustable surface friction coefficient and preparation process thereof
CN116278298B (en) * 2023-05-10 2023-07-18 内蒙古大汗青洲环保科技有限公司 PBAT composite material with adjustable surface friction coefficient and preparation process thereof

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