CN106750828A - Liquid packaging film white master material special, its preparation method and its application - Google Patents
Liquid packaging film white master material special, its preparation method and its application Download PDFInfo
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- CN106750828A CN106750828A CN201710046173.0A CN201710046173A CN106750828A CN 106750828 A CN106750828 A CN 106750828A CN 201710046173 A CN201710046173 A CN 201710046173A CN 106750828 A CN106750828 A CN 106750828A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C08L2203/00—Applications
- C08L2203/16—Applications used for films
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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Abstract
The present invention proposes a kind of liquid packaging film white master material special, its preparation method and its application, belong to plastic package material field, the liquid packaging film white master material special has the advantages that high concentration, high dispersive, whiteness high, composite performance are excellent, properties are balanced, can meet liquid packaging film industry use requirement.The liquid packaging film white master material special, in terms of parts by weight, including 21 30 parts of major ingredient, 65 75 parts of titanium dioxide, 35 parts of antioxidant, 0.4 1 parts of pigment；Wherein, major ingredient is the mixture of LLDPE and melting means LDPE high.The present invention can be applied in the manufacturing process of liquid packaging film.
Description
Technical field
The invention belongs to plastic package material field, more particularly to a kind of liquid packaging film white master material special, its preparation
Method and its application.
Background technology
In plastic package material, the market demand amplification of thin-film material is maximum, accounts for plastic package material total amount
46%.Plastic film mainly includes：Heat shrinkable package film, winding package film, food aseptic packaging film, preserving fruit and vegetable utilizing
Film, liquids packaging film etc..
As China's plastic sheeting industry equipment constantly improves, a collection of new product is emerged, for example, as compound
The biaxially oriented film of packaging base material not only overcomes the situation of long-term import, and now annual also 300,000 tons or so of outlet,
Earn foreign exchange more than 30 hundred million dollars.The number of the packing film manufacturing enterprise of scale quickly grows in China, and the ecology potential of packing film must
The synchronized development of the special color masterbatch of film can be driven, therefore researches and develops this project and meet industry development trend.
Liquids packaging film white master material special has stronger versatility compared with other color masterbatch kinds, can be applicable to not
With the liquid packaging film field of purposes, and in production process, the versatility of raw material and finished product can avoid the formation of dead stock
And cause enterprises' loss, it is easy to large-scale production is formed, enterprise can do greatly, be worth enterprise to develop as major products.However,
The enterprise that high-end liquid packaging film color masterbatch can be produced at present only has only a few Ji Jia large enterprises, is mainly used in daily side
The application fields such as faeces bag coloring, agricultural film coloring, liquid packaging composite film, but overall cost is still higher, and individual product is being used
When occur composite bed cracking, it is poorly sealed the problems such as.Therefore research and develop that a kind of liquid packaging film is special, high-end, steady quality
Reliable white master material meets industry development trend.
The content of the invention
The invention provides a kind of liquid packaging film white master material special, its preparation method and its application, the flexible package punch
Film white master material special has the advantages that high concentration, high dispersive, whiteness high, composite performance are excellent, and properties are balanced, can be full
Sufficient liquid packaging film industry use requirement, product cost can be reduced after being applied to high-end liquid packaging film product, improve quality
Stability.
In order to achieve the above object, the technical solution adopted by the present invention is：
An aspect of of the present present invention provides a kind of liquid packaging film white master material special, in terms of parts by weight, including major ingredient
21-30 parts, titanium dioxide 65-75 parts, antioxidant 3-5 parts, pigment 0.4-1 parts；
Wherein, major ingredient is the mixture of LLDPE and melting means LDPE high.
As optimal technical scheme, in terms of weight fraction, LLDPE 9-14 parts, 12-16 parts of melting means LDPE high.
Used as optimal technical scheme, the melt index of the melting means LDPE high reaches 50g/10min.
As optimal technical scheme, the antioxidant be three (2,4- di-tert-butyl-phenyl) phosphite esters, phosphorous acid three (2,
4- di-tert-butyl-phenyls) ester and four [3- (3,5- di-t-butyl -4- hydroxyphenyls) propionic acid] quaternary amyl alcohol esters mixture.
It is special white another aspect provides a kind of liquid packaging film as described in above-mentioned any one technical scheme
The preparation method of color masterbatch, comprises the following steps：
Compounding process：Major ingredient, titanium dioxide, antioxidant, pigment are accurately weighed by weight, then according to first addition master
Expect, add that be added to for said components by the order of other components and mixing is stirred in mixer, after being well mixed, matched somebody with somebody
Mixed material；
Granulation process：To be compounded in the twin-screw underwater cutpellet extruding granulator of material feeding preset temperature, be compounded material
It is blended through twin-screw high speed shear by high temperature melting, after extrusion, underwater cutpellet, dehydration, obtains the special white of liquid packaging film
Masterbatch.
Used as optimal technical scheme, twin-screw underwater cutpellet extruding granulator includes the feeding section of preset temperature, melting
Section, fluxing zone and head area, wherein, the temperature of feeding section is 140 DEG C -150 DEG C, the temperature of melt zone is 160 DEG C -170 DEG C,
The temperature of fluxing zone is 170 DEG C -180 DEG C, and the temperature in head area is 190 DEG C -200 DEG C.
It is special white that another aspect of the invention provides a kind of liquid packaging film as described in above-mentioned any one technical scheme
Application of the color masterbatch in liquid packaging film is prepared.
It is yet another aspect of the present invention to provide a kind of liquid packaging film, with the liquid bag described in any of the above-described technical scheme
Dress film white master material special is used as main component.
Used as optimal technical scheme, described liquid packaging film white master material special passes through any of the above-described technical scheme institute
The preparation method stated is prepared.
Compared with prior art, advantages and positive effects of the present invention are：
1st, the invention provides a kind of liquid packaging film white master material special, the formula is by optimization and improves major ingredient
Selection and ratio collocation so that product can have the modeling of fine dispersion performance, MULTILAYER COMPOSITE performance, printing performance and good internal layer
Material film glass intensity；Meanwhile, coordinate other components, especially in the case of titanium dioxide addition higher, disperse without addition
Agent achieves that good mobile performance and processing characteristics, so that the combination property of product is ensured；
2nd, when aforesaid liquid packaging film white master material special is prepared, the advanced twin-screw of industry has been used cooperatively and has cut under water
Grain extruding granulator, it can be ensured that the normal underwater cutpellet of product, normal process, this be excellent liquid packaging film it is special
The technology key step of white master material；
3rd, the liquid packaging film prepared by aforesaid liquid packaging film white master material special is being applied to high-end liquid bag
Product cost can be substantially reduced after dress film product, quality stability is improved.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
The embodiment of one aspect of the present invention provides a kind of liquid packaging film white master material special, in terms of parts by weight, bag
Include major ingredient 21-30 parts, titanium dioxide 65-75 parts, antioxidant 3-5 parts, pigment 0.4-1 parts；Wherein, major ingredient is LLDPE and melting means high
The mixture of LDPE.
In the present embodiment, improvement is mainly optimized to liquid packaging film white master material special, the major ingredient is
The mixture of LLDPE (LLDPE) and melting means LDPE high (low density polyethylene (LDPE)) compoundings, wherein, LLDPE has
Tenacity excellent is its tensile strength, tearing toughness, environmental stress crack resistance, lower temperature resistance, heat-resisting the advantages of be as good as taste
Property and paracentesis resistance it is particularly superior, melting means LDPE high has melt index higher, and mobile performance is splendid, and adding the material can be with
Instead of conventional dispersant, make in color masterbatch without adding dispersant again, so as to ensure printing and composite performance.It is preferred real one
Apply in example, the melt index of the melting means LDPE high reaches 50g/10min.To the melt index of melting means LDPE high in the present embodiment
It is defined, this is mainly to ensure that it there can be above-mentioned performance, to reach the Expected Results of product with LLDPE compoundings.
The advantage of the formula is the compounding use of LLDPE and melting means LDPE high in system, two kinds of poly- second of different qualities
The compounding use of olefine resin can make invention product while having mechanical property, dispersive property and MULTILAYER COMPOSITE performance, comprehensive
Can be excellent；In addition, from the print request of film article, not only mobility is very good for the LDPE of melting means high, but also can be with
Play a part of dispersant, therefore can ensure still further add dispersant in formula；In other cases, if in formula
Use other eutectics to refer to LDPE, or common dispersant is with the addition of in formula, be then not only not up to expected effect
Really, but also can cause film surface print it is bad, fall paint etc. phenomenon, so as to influence the MULTILAYER COMPOSITE intensity of film.
In a preferred embodiment, the preferable high-end rutile type titanium white of import Du Pont of the titanium dioxide, it has excellent
Different weather resistance, dispersive property and Color Stability, tinctorial property are excellent.Meanwhile, in another preferred embodiment, due to
Final products are high-end white, therefore, pigment preferred import top grade pigment to adjust the color coloured light of color masterbatch, so as to improve most
The visual effect of whole product.It is understood that the specific color of available pigment can be according to the tool of product in the present embodiment
Body is required and adjusted, as long as the visual effect for improving end article can be played.
In a preferred embodiment, in terms of weight fraction, LLDPE 9-14 parts, 12-16 parts of melting means LDPE high.With reference to upper
State the reasonability of formula combination, the present embodiment to major ingredient in the specific weight portion of two components be defined, wherein,
LLDPE can also further be optimized for 10,11,12,13 parts, and melting means LDPE high can also further be optimized for 13,14,15 parts, ability
Field technique personnel can within the above range be adjusted according to actual conditions.
In a preferred embodiment, the antioxidant be three (2,4- di-tert-butyl-phenyl) phosphite esters, phosphorous acid three (2,
4- di-tert-butyl-phenyls) ester and four [3- (3,5- di-t-butyl -4- hydroxyphenyls) propionic acid] quaternary amyl alcohol esters mixture.In this implementation
In example, from the anti-oxidant ability for making final products that there is resistance photooxidation xanthochromia of compounding, the sustained color of color is kept, held
Long color is as bright as new.It is understood that in the present embodiment available antioxidant be not limited to it is above-mentioned cited, also
Can those skilled in the art carried out rationally being replaced according to general knowledge.
The embodiment of another aspect of the present invention provides a kind of special white of liquid packaging film as described in above-mentioned embodiment
The preparation method of masterbatch, comprises the following steps：
Compounding process：Major ingredient, titanium dioxide, antioxidant, pigment are accurately weighed by weight, then according to first addition master
Expect, add that be added to for said components by the order of other components and mixing is stirred in mixer, after being well mixed, matched somebody with somebody
Mixed material；
Granulation process：To be compounded in the twin-screw underwater cutpellet extruding granulator of material feeding preset temperature, be compounded material
It is blended through twin-screw high speed shear by high temperature melting, after extrusion, underwater cutpellet, dehydration, obtains the special white of liquid packaging film
Masterbatch.
Above mentioned embodiment provide a kind of preparation method of liquid packaging film white master material special, it is preferred that in compounding
And in whipping process, there is strict control for the feeding sequence of each component, only in this way just can ensure that between each component
To fully pretreatment.Specifically, major ingredient need to be added first, other components, start stirring 7-8 minutes are then added.Meanwhile,
Advanced twin-screw underwater cutpellet extruding granulator in industry of being arranged in pairs or groups in granulation process, it can be ensured that the normal underwater cutpellet of product,
Normal process, so that it is guaranteed that easily-controllable by white master material steady quality that the preparation method is prepared.
In a preferred embodiment, twin-screw underwater cutpellet extruding granulator includes the feeding section of preset temperature, melting
Section, fluxing zone and head area, wherein, the temperature of feeding section is 140 DEG C -150 DEG C, the temperature of melt zone is 160 DEG C -170 DEG C,
The temperature of fluxing zone is 170 DEG C -180 DEG C, and the temperature in head area is 190 DEG C -200 DEG C.It is listed double in the present embodiment
The temperature in each section in screw rod underwater cutpellet extruding granulator can be entered according to practical condition in the range of said temperature
The a little adjustment of row, to ensure that whole method is carried out in order.
It is special that the embodiment of further aspect of the present invention provides a kind of liquid packaging film as described in above-mentioned any embodiment
Application of the white master material in liquid packaging film is prepared.The liquid packaging film white master material special that above-described embodiment is provided is due to tool
There are fine dispersion performance, MULTILAYER COMPOSITE performance, printing performance and good inner plastic film glass intensity；Meanwhile, coordinate other
Component, achieves that good mobile performance and processing characteristics, therefore can obtain the combination property of product without adding dispersant
To ensure, can effectively apply in the preparation of liquid packaging film, to obtain more high-end liquid packaging film.
The embodiment of another aspect of the invention provides a kind of liquid packaging film, with the liquid described in any of the above-described embodiment
Body packaging film white master material special is used as main component.In a preferred embodiment, the special white of described liquid packaging film is female
Material is prepared by the preparation method described in any of the above-described embodiment.
Because the liquid packaging film white master material special that above-described embodiment is provided has fine dispersion performance, MULTILAYER COMPOSITE
The advantages of energy, printing performance and good inner plastic film glass intensity, and properties are balanced, can meet industry use will
Ask, therefore can strictly be adopted as the main component for making high-end liquid packaging film, the preparation method for coordinating above-described embodiment to provide
Advanced manufacturing equipment is used, each committed step of technique, therefore the excellent liquid packaging film of availability is advantageously controlled.
In order to become apparent from introducing liquid packaging film white master material special, its preparation that the embodiment of the present invention is provided in detail
Method and its application, are described below in conjunction with specific embodiment.
Embodiment 1
12 parts of LLDPE, 13 parts of melting means LDPE high, 70 parts of rutile type titanium white, antioxygen are accurately weighed by weight
4.5 parts of agent, 0.5 part of pigment, and according to LLDPE and melting means LDPE high is first added, the order for adding remaining component will be above-mentioned each
Component is stirred in being added to high-speed mixer, it is to be mixed it is well mixed after, obtain being compounded material.
Will compounding material feeding twin-screw underwater cutpellet extruding granulator in, compounding material sequentially pass through 140 DEG C of feeding section,
After 160 DEG C of melt zone, 170 DEG C of fluxing zone, 190 DEG C of head area high temperature melting, it is blended through twin-screw high speed shear, extrudes, crosses water
Cooling, air-dried, pelletizing, obtain liquid packaging film white master material special 1.
Embodiment 2
14 parts of LLDPE, 13 parts of melting means LDPE high, 68 parts of rutile type titanium white, antioxygen are accurately weighed by weight
4.5 parts of agent, 0.5 part of pigment, and according to LLDPE and melting means LDPE high is first added, the order for adding remaining component will be above-mentioned each
Component is stirred in being added to high-speed mixer, it is to be mixed it is well mixed after, obtain being compounded material.
Will compounding material feeding twin-screw underwater cutpellet extruding granulator in, compounding material sequentially pass through 145 DEG C of feeding section,
After 165 DEG C of melt zone, 175 DEG C of fluxing zone, 205 DEG C of head area high temperature melting, it is blended through twin-screw high speed shear, extrudes, crosses water
Cooling, air-dried, pelletizing, obtain liquid packaging film white master material special 2.
Embodiment 3
9 parts of LLDPE, 14 parts of melting means LDPE high, 72 parts of rutile type titanium white, antioxidant are accurately weighed by weight
4.6 parts, 0.4 part of pigment, and according to LLDPE and melting means LDPE high is first added, the order of remaining component is added by above-mentioned each group
Point be added in high-speed mixer and be stirred, it is to be mixed it is well mixed after, obtain being compounded material.
Will compounding material feeding twin-screw underwater cutpellet extruding granulator in, compounding material sequentially pass through 150 DEG C of feeding section,
After 170 DEG C of melt zone, 180 DEG C of fluxing zone, 200 DEG C of head area high temperature melting, it is blended through twin-screw high speed shear, extrudes, crosses water
Cooling, air-dried, pelletizing, obtain liquid packaging film white master material special 3.
Performance test
Performance survey is carried out in terms of following respectively to the liquid packaging film white master material special that above-described embodiment 1-3 is obtained
Examination, test result is referring to table 1-3.
The Specifeca tion speeification index test result of 1 embodiment of table 1
The Specifeca tion speeification index test result of 2 embodiment of table 2
The Specifeca tion speeification index test result of 3 embodiment of table 3
By the test result of each embodiment in above-mentioned table 1-3 performance tests, provided by the embodiment of the present invention
The liquid packaging film white master material special for preparing of composition of raw materials either from dispersiveness, foodsafety, inner plastic
Film peel strength or whiteness aspect can reach every testing standard, therefore can be effectively used for the preparation of liquid packaging film,
With prepare function admirable, meet the liquid packaging film of high-end standard requirement.
Claims (9)
1. a kind of liquid packaging film white master material special, it is characterised in that in terms of parts by weight, including major ingredient 21-30 parts, titanium white
Powder 65-75 parts, antioxidant 3-5 parts, pigment 0.4-1 parts；
Wherein, major ingredient is the mixture of LLDPE and melting means LDPE high.
2. liquid packaging film white master material special according to claim 1, it is characterised in that in terms of weight fraction, LLDPE
9-14 parts, 12-16 parts of melting means LDPE high.
3. liquid packaging film white master material special according to claim 1 and 2, it is characterised in that the melting means LDPE high
Melt index reach 50g/10min.
4. liquid packaging film white master material special according to claim 1 and 2, it is characterised in that the antioxidant is three
(2,4- di-tert-butyl-phenyls) phosphite ester, (2,4- di-tert-butyl-phenyls) ester of phosphorous acid three and four [3- (3,5- di-t-butyls-
4- hydroxyphenyls) propionic acid] quaternary amyl alcohol ester mixture.
5. a kind of preparation method of liquid packaging film white master material special as described in claim any one of 1-4, its feature exists
In comprising the following steps：
Compounding process：Major ingredient, titanium dioxide, antioxidant, pigment are accurately weighed by weight, then according to first adding major ingredient, again
Add the order of other components to be added to said components and mixing is stirred in mixer, after being well mixed, obtain blend
Material；
Granulation process：To be compounded in the twin-screw underwater cutpellet extruding granulator of material feeding preset temperature, compounding material passes through
High temperature melting is blended through twin-screw high speed shear, after extrusion, underwater cutpellet, dehydration, obtains liquid packaging film white master material special.
6. preparation method according to claim 5, it is characterised in that twin-screw underwater cutpellet extruding granulator includes in advance
If the feeding section of temperature, melt zone, fluxing zone and head area, wherein, the temperature of feeding section is 140 DEG C -150 DEG C, melt zone
Temperature be 160 DEG C -170 DEG C, the temperature of fluxing zone be 170 DEG C -180 DEG C, the temperature in head area is 190 DEG C -200 DEG C.
7. a kind of liquid packaging film white master material special as described in claim any one of 1-4 is in liquid packaging film is prepared
Using.
8. a kind of liquid packaging film, it is characterised in that female with the special white of the liquid packaging film described in claim any one of 1-4
Material is used as main component.
9. liquid packaging film according to claim 8, it is characterised in that described liquid packaging film white master material special leads to
The preparation method described in claim 5 or 6 is crossed to prepare.
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Cited By (7)
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| CN107383520A (en) * | 2017-06-26 | 2017-11-24 | 李春秀 | PE liquid packaging films |
| CN107973960A (en) * | 2017-12-07 | 2018-05-01 | 广东波斯科技股份有限公司 | Low film masterbatch for separating out color inhibition features and preparation method thereof |
| CN107973957A (en) * | 2017-11-23 | 2018-05-01 | 常州圣雅塑母粒有限公司 | Anti- precipitation type Masterbatch |
| CN111218047A (en) * | 2019-08-19 | 2020-06-02 | 江苏秀乐新材料科技有限公司 | Pre-dispersed product for multilayer co-extrusion protective film and production method thereof |
| CN114249935A (en) * | 2020-09-19 | 2022-03-29 | 青岛周氏塑料包装有限公司 | Weather-resistant color master batch and preparation method thereof |
| CN114790310A (en) * | 2021-12-30 | 2022-07-26 | 青岛润兴塑料新材料有限公司 | White nut for composite film packaging bag |
| CN116023729A (en) * | 2023-01-09 | 2023-04-28 | 广州华新科智造技术有限公司 | Special master batch for PE white film and preparation method thereof |
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| CN116023729A (en) * | 2023-01-09 | 2023-04-28 | 广州华新科智造技术有限公司 | Special master batch for PE white film and preparation method thereof |
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