CN105482260B - A kind of severe cold areas Biaxially oriented polypropylene bag making film and preparation method thereof - Google Patents
A kind of severe cold areas Biaxially oriented polypropylene bag making film and preparation method thereof Download PDFInfo
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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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- 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
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- 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
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- 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
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- 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
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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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
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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Abstract
The present invention relates to bidirectional stretching polypropylene film processing technique field, specially a kind of severe cold areas Biaxially oriented polypropylene bag making film and preparation method thereof.The bag making film of the present invention includes upper epidermis, sandwich layer and layer；The upper epidermis includes：Homopolypropylene, antitack agent；The sandwich layer includes：Homopolypropylene, antistatic agent, slipping agent；The layer includes：Homopolypropylene, antitack agent；The antistatic agent includes the following raw material：Modifying agent, monoglyceride, antioxidant and polypropylene；The modifying agent is compounded to obtain by ethoxylation octadecylamine, N, (hydroxyethyl) coconut oleoyl amines of N-bis- and alkylboronic acids alkanolamine ester.The bag making film of the present invention has good technique effect, solves the antistatic technology problem in the Northeast's bidirectional stretching polypropylene film production and use.
Description
Technical field
The present invention relates to a kind of severe cold areas Biaxially oriented polypropylene bag making films and preparation method thereof, and it is poly- to belong to biaxial tension
Polypropylene film processing technique field.
Background technology
Biaxially oriented polypropylene (BOPP) film has light, nontoxic, odorless, moisture-proof, high mechanical strength, dimensional stability
The advantages that good, printing performance is well, the transparency is good, is widely used in food, candy, cigarette, tealeaves, fruit juice, milk, textile
Deng packaging field, have the laudatory title of " packaging queen ".BOPP film is wide, pollution low and to forest natural resources using it
Protection, becomes the packaging material more welcome than paper and polyvinyl chloride (PVC)；The simple reliable, price of manufacturing process
Rationally make it more more commonly used than biaxial stretching polyester (BOPET) film and biaxial tension nylon (BOPA) film again
Packaging material.But due to polypropylene low pole, water imbibition is poor, has very forceful electric power insulation performance so that BOPP film is producing
Electrostatic is generated with a large amount of charges of accumulation are easy during use, brings security risk to production, while packing and bag making processing
In the process because of Electrostatic Absorption processing difficulties, a large amount of Electrostatic Absorption dust in air influence attractive packages.So in process of production
It is usually added into antistatic agent and eliminates article of manufacture generation electrostatic.Antistatic agent has ionic anti-static agent and nonionic antistatic
Agent.Ionic anti-static agent turns to be yellow, embrittlement is not used by BOPP film industry, BOPP because easily making polypropylene articles accelerated ageing
Film industry is generally using addition non-ionic antistatic agent.
The non-ionic antistatic agent mechanism of action is that the interior doping in BOPP film moves to film surface, wherein hating
Water base to be planted in inside acrylic resin, hydrophilic group is outside, absorbs moisture content in air, forms water membrane, and moisture film has conductor
Feature, to make BOPP film reach antistatic effect.It is uniformly dispersed in BOPP film to reach antistatic agent, at present industry
Interior open report is that antistatic agent masterbatch is made with fatty amine and monoglyceride and certain proportion polypropylene material mixture, melting extrusion,
Antistatic agent masterbatch is added in process of production.In order to reinforce antistatic effect, fatty amine is changed into ethoxylated fat by majority
Amine.Such antistatic agent plays necessary condition there are two effects, when the migration of antistatic agent, second is that the humidity of air.Experiment
Show that ethoxylated fatty amine loses activity when environment temperature is less than 20 DEG C, does not migrate or migrate very slow, monoglyceride is in ring
Migration is very slow when border temperature is less than 15 DEG C.When ambient humidity is less than 50%, with ethoxylated fatty amine and monoglyceride poor effect,
Antistatic effect is not achieved in BOPP products.Northeast severe cold areas has 12 BOPP production lines at present, and production capacity surpasses 500,000 tons.But
The high and cold weather in northeast constrains the development of BOPP, and workshop temperature is at 15 DEG C or so in winter, and humidity is 25% or so, very much
Product cannot all produce, and production capacity is remote less than 500,000 tons, seriously limits the development of company.
Invention content
To solve the above problems, the present invention provides a kind of severe cold areas Biaxially oriented polypropylene bag making film and its preparation sides
Method.
Technical scheme is as follows：One kind be used for severe cold areas Biaxially oriented polypropylene bag making film, including upper epidermis,
Sandwich layer and layer；The upper epidermis includes the raw material of following weight percent：Homopolypropylene 97-98%, antitack agent 2-
3%；The sandwich layer includes the raw material of following weight percent：Homopolypropylene 95-98.2%, antistatic agent 1.0-3.0%, it feels well
Lubrication prescription 0.7-2%；The layer includes the raw material of following weight percent：Homopolypropylene 97-98.5%, antitack agent 1.5-
3%；The antistatic agent includes the following raw material：Modifying agent, monoglyceride, antioxidant and polypropylene；The modifying agent is by ethoxy
Base octadecylamine, N, (hydroxyethyl) coconut oleoyl amines of N-bis- and alkylboronic acids alkanolamine ester compound to obtain.
Further, the weight percent of the modifying agent is 8%-12%；The weight percent of monoglyceride is 8%-
12%；The weight percent of antioxidant is 0.3%；Polyacrylic weight percent is 79.7%.
Further, the thickness of the upper epidermis is 1.0 μm, the thickness of sandwich layer is 10.0-60.0 μm, the thickness of layer
Degree is 1.0 μm；Preferably, the thickness of upper epidermis is 1.0 μm, the thickness of sandwich layer is 18.0 μm, the thickness of layer is 1.0 μm.
One optimization formula of bag making film of the present invention is：
Upper epidermis includes the raw material of following weight percent：Homopolypropylene 97.5%, antitack agent 2.5%；Sandwich layer includes
The raw material of following weight percent：Homopolypropylene 97.4%, antistatic agent 1.6%, slipping agent 1.0%；Layer includes such as
The raw material of lower weight percent：Homopolypropylene 98%, antitack agent 2.0%；Wherein antistatic agent includes following weight percent
Raw material：Modifying agent 12%, monoglyceride 8%, antioxidant 0.3%, polypropylene 79.7%；The thickness of the upper epidermis be 1.0 μm,
The thickness of sandwich layer is 18.0 μm, the thickness of layer is 1.0 μm.
The antitack agent, the slipping agent that are used in raw material of the present invention are the convenient source of bag making technical field of membrane, the present invention couple
It is not specifically designated.
The preparation method of above-mentioned severe cold areas Biaxially oriented polypropylene bag making film is claimed in the present invention simultaneously, including as follows
Step：
(1) preparation of antistatic agent：
A. by octadecylamine, (hydroxyethyl) coconut oleoyl amine of N, N- bis- and alkylboronic acids alkanolamine ester and reacting ethylene oxide
Obtain modifying agent；
B. modifying agent 8-12% and monoglyceride 8-12%, antioxidant 0.3%, polypropylene 79.7% are mixed
Close material；
C. it adds mixture into extruder, melting squeezes out, and antistatic master batch is made；
D. the dry, pelletizing by antistatic master batch cooling made of step (c), packs up to antistatic agent；
(2) it feeds intake：Each raw material of upper epidermis, sandwich layer, layer is put into corresponding double screw extruder respectively
It is interior；The wherein described upper epidermis includes the raw material of following weight percent：Homopolypropylene 97-98%, antitack agent 2-3%；It is described
Sandwich layer includes the raw material of following weight percent：Homopolypropylene 95-98.2%, antistatic agent 1.0-3.0%, slipping agent 0.8-
2%；The layer includes the raw material of following weight percent：Homopolypropylene 97-98%, antitack agent 2-3%；
(3) extrusion plasticizing：It is plasticized and squeezes out at a temperature of 250 DEG C；
(4) slab cools down：At 30 ± 5 DEG C, the water temperature of sink is controlled at 30 ± 5 DEG C for the water temperature control of sharp cooling roll；
(5) longitudinal stretching：Stretching ratio is increased to 4.8-5.5；
(6) cross directional stretch：Stretching ratio is increased to 10.0-12.0；
(7) Thickness Measurement by Microwave, sided corona treatment are drawn：Sided corona treatment is carried out to upper epidermis, wetting tension is 44-46 dynes, so as to
Wetting tension is more than 38 dynes after ensuring ageing treatment；
(8) it winds；
(9) ageing treatment.
Beneficial effects of the present invention are as follows：
(1) severe cold areas Biaxially oriented polypropylene bag making film provided by the invention can use and anti-in northeast severe cold areas
Electrostatic efficiency is apparent, has good technique effect, solves such as northeast severe cold areas winter bag making film, print film, compound
Film production bottleneck；
(2) severe cold areas Biaxially oriented polypropylene bag making film provided by the invention, cost of material is low, and bag making film thickness is suitable
In, there is good antistatic effect；
(3) preparation method of severe cold areas Biaxially oriented polypropylene bag making film provided by the invention is simple, is increased in temperature
When can also be by adjusting raw material proportioning to meet production requirement, production cost is low, adaptable, convenient for promoting the use of.
Specific implementation mode
The present invention is described in detail below by embodiment, but do not limit the invention in any way.Following embodiments
In unless otherwise specified, used test method is conventional method, material therefor, reagent, instrument etc. can from biology or
Chemical company buys.Sheet resistance tester produces for Japan ADCMT, model 8340A；Product antistatic agent effective concentration is
2500ppm；Polypropylene：Dalian petrochemical industry T36F.
Embodiment 1
Preparation-the AT1 of antistatic agent
(1) by 75 kilograms of octadecylamine, 8.3 kilograms of N, N-bis- (hydroxyethyl) coconut oleoyl amine, boric acid alkyl alcoholamine ester
16.7 kilograms are added to high mixer mixing reaction kettle are added and are passed through 12.5 kilograms of addition reactions of ethylene oxide and obtain modifying agent.
(2) be respectively by weight percent 12%, 8%, 0.3%, 79.7% modifying agent, monoglyceride, three (bis- uncles of 2,4-
Butyl) phenyl-phosphite, polypropylene be uniformly mixed obtain mixture；
(3) THJ- high rotating speed high torque corotating twin-screw mixing extruder meltings extrusion is added mixture into, is made
Antistatic master batch, 210 DEG C, pressure 6Mpa, rotating speed 500rpm, screw diameter 75mm of extrusion temperature, draw ratio 40：1；
(4) the dry, pelletizing by antistatic master batch cooling made of step (3)；
(5) the antistatic master batch cyclic drying after pelletizing is uniformly mixed pack and obtains antistatic agent AT1.
Embodiment 2
Preparation-the AT2 of antistatic agent
(1) by 75 kilograms of octadecylamine, 8.3 kilograms of N, N-bis- (hydroxyethyl) coconut oleoyl amine, boric acid alkyl alcoholamine ester
16.7 kilograms are added to high mixer mixing reaction kettle are added and are passed through 12.5 kilograms of addition reactions of ethylene oxide and obtain modifying agent.
(2) be respectively by weight percent 8%, 12%, 0.3%, 79.7% modifying agent, monoglyceride, three (bis- uncles of 2,4-
Butyl) phenyl-phosphite, polypropylene be uniformly mixed obtain mixture；
(3) THJ- high rotating speed high torque corotating twin-screw mixing extruder meltings extrusion is added mixture into, is made
Antistatic master batch, 210 DEG C, pressure 6Mpa, rotating speed 500rpm, screw diameter 75mm of extrusion temperature, draw ratio 40：1；
(4) the dry, pelletizing by antistatic master batch cooling made of step (3)；
(5) the antistatic master batch cyclic drying after pelletizing is uniformly mixed pack and obtains antistatic agent AT2.
Embodiment 3
The bag making film of the present embodiment includes the raw material of following weight percent：Upper epidermis includes：Homopolypropylene 97.5%,
Antitack agent 2.5%；Sandwich layer includes：Homopolypropylene 97.4%, antistatic agent 1.6%, slipping agent 1.0%；Layer includes：
Poly- polypropylene 98%, antitack agent 2.0%；Wherein antistatic agent is AT1 prepared by embodiment 1；The thickness of the upper epidermis is 1.0
μm, the thickness of sandwich layer be 18.0 μm, the thickness of layer is 1.0 μm.
Specific preparation method is as follows：
(1) it feeds intake：Each raw material of upper epidermis, sandwich layer, layer is put into corresponding double screw extruder respectively
It is interior；
(2) extrusion plasticizing：By each raw material in double screw extruder, the melting extrusion under 250 DEG C of temperature condition；
(3) slab cools down：The melt that double screw extruder squeezes out is squeezed out through flat membrane mouth gap and is cooled down through sharp cooling roll and sink
At sheet, mouth mold gap 2.7mm, at 32 DEG C, the water temperature of sink is controlled at 32 DEG C for the water temperature control of sharp cooling roll；
(4) longitudinal stretching：Sheet preheats 28 seconds at being 138 DEG C in preheating temperature, and 5.0 times are stretched at a temperature of 130 DEG C,
It shapes 1.5 seconds at a temperature of 140 DEG C；
(5) cross directional stretch：Sheet preheats 6 seconds in transverse stretching machine at a temperature of 172 DEG C, is laterally drawn at a temperature of 158 DEG C
10.0 times are stretched, is shaped 6 seconds at a temperature of 168 DEG C；
(6) Thickness Measurement by Microwave, sided corona treatment are drawn：Sided corona treatment, wetting tension 42 are carried out to upper epidermis after Thinner Films degree
Dyne, to ensure that wetting tension is more than 37 dynes after ageing treatment；
(7) it winds:Film is rolled into semi-finished product under suitable tension；
(8) ageing treatment：Under 15-20 DEG C of temperature, humidity 28%-30% environment, 3 days are stood to get bag making film.
Embodiment 4
The antistatic agent used in the bag making film raw material of the present embodiment is AT2 prepared by embodiment 2, and the thickness of sandwich layer is 60
μm, when specific preparation method is same for other material compositions and weight percent
Embodiment 3.
Comparative example
Antistatic agent in the bag making film raw material of comparative example is the universal antistatic agent in market；Its upper epidermis includes as follows
The raw material homopolypropylene 97.5% of weight percent, antitack agent 2.5%；Sandwich layer includes the raw material homopolymerization of following weight percent
Polypropylene 97.4%, antistatic agent 1.6%, slipping agent 1.0%；Layer includes the raw material homopolymerization poly- third of following weight percent
Alkene 98%, antitack agent 2%；The thickness control of upper epidermis is 1.0 μ, the thickness control of sandwich layer is 18.0 μ, the thickness control of layer
It is made as 1.0 μ.
The bag making film of embodiment and comparative example is detected, as a result such as table 1：
Table 1
Condition of storage：Temperature：15-20℃；Humidity：28%-30%；Place：Dalian
From table 1 it follows that the severe cold areas Biaxially oriented polypropylene bag making film of the present invention compares traditional two-way drawing
Faster, hygroscopicity is strong for polypropylene stretched film antistatic agent migration velocity, and placement same time surface resistivity was lower, at three days
It is interior to reach using standard.Solve northeast severe cold areas winter bag making film, print film, composite membrane production bottleneck.
The specific embodiment of the invention is explained in detail above, but present invention is not limited to the embodiments described above,
Within the knowledge of those skilled in the art, various changes can also be made without departing from the inventive concept of the premise
Change.
Above-mentioned specific implementation mode is only used for illustrating the design of the present invention, rather than the limit to rights protection of the present invention
Fixed, all changes for carrying out unsubstantiality to the present invention using this design each fall within protection scope of the present invention.
Claims (4)
1. a kind of severe cold areas Biaxially oriented polypropylene bag making film, including upper epidermis, sandwich layer and layer；It is characterized in that, institute
State the raw material that upper epidermis includes following weight percent：Homopolypropylene 97-98%, antitack agent 2-3%；The sandwich layer includes such as
The raw material of lower weight percent：Homopolypropylene 95-98.2%, antistatic agent 1.0-3.0%, slipping agent 0.7-2.0%；It is described
Layer includes the raw material of following weight percent：Homopolypropylene 97-98.5%, antitack agent 1.5-3%；
The antistatic agent includes the following raw material：Modifying agent, monoglyceride, antioxidant and polypropylene；The modifying agent is by ethoxy
Base octadecylamine, N, (hydroxyethyl) coconut oleoyl amines of N-bis- and alkylboronic acids alkanolamine ester compound to obtain；
(1) preparation of antistatic agent：
A. by octadecylamine, (hydroxyethyl) coconut oleoyl amine of N, N- bis- and alkylboronic acids alkanolamine ester and reacting ethylene oxide obtain
Modifying agent；
B. modifying agent 8-12% and monoglyceride 8-12%, antioxidant 0.3%, polypropylene 79.7% are mixed
Material；
C. it adds mixture into extruder, melting squeezes out, and antistatic master batch is made；
D. the dry, pelletizing by antistatic master batch cooling made of step (c), packs up to antistatic agent；
(2) it feeds intake：The raw material of upper epidermis, sandwich layer, layer is put into respectively in corresponding extruder；
(3) extrusion plasticizing；
(4) slab cools down；
(5) longitudinal stretching；
(6) cross directional stretch；
(7) Thickness Measurement by Microwave, sided corona treatment are drawn；
(8) it winds；
(9) ageing treatment.
2. bag making film as described in claim 1, which is characterized in that the thickness of the upper epidermis is 1.0 μm, the thickness of sandwich layer
Thickness for 10.0-60.0 μm, layer is 1.0 μm.
3. bag making film as described in claim 1, which is characterized in that the upper epidermis includes the original of following weight percent
Material：Homopolypropylene 97.5%, antitack agent 2.5%；Sandwich layer includes the raw material of following weight percent：Homopolypropylene
97.4%, antistatic agent 1.6%, slipping agent 1.0%；Layer includes the raw material of following weight percent：Homopolypropylene
98%, antitack agent 2.0%；Wherein antistatic agent includes the raw material of following weight percent：Modifying agent 12%, resists monoglyceride 8%
Oxygen agent 0.3%, polypropylene 79.7%；The thickness of the upper epidermis is 1.0 μm, the thickness of sandwich layer is 18.0 μm, the thickness of layer
Degree is 1.0 μm.
4. bag making film as described in claim 1, which is characterized in that the weight percent of the modifying agent is 12% and list is sweet
The weight percent of ester is 8%, the weight percent of antioxidant is 0.3%, polyacrylic weight percent is 79.7%.
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| CN113492567A (en) * | 2021-06-22 | 2021-10-12 | 安徽国风塑业股份有限公司 | Biaxially oriented polypropylene film with high transverse extensibility and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110228179A (en) * | 2019-05-29 | 2019-09-13 | 宿迁市金田塑业有限公司 | A kind of electronic product processing procedure protection manufacturing process of biaxial tension colored base film |
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