CN102719200B - High-stiffness high-strength heat-sealing embossed film and preparation method thereof - Google Patents
High-stiffness high-strength heat-sealing embossed film and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a high-stiffness high-strength heat-sealing embossed film and a preparation method thereof, in particular to a thin film applied to a curtain coating technology. The densities of film layers are controlled through components, and the deformation trend of each layer of the three-layer coextruded curtain coating film embossed film is optimized by refining processing technique, so as to obtain the high-stiffness high-strength heat-sealing embossed film. The embossed film has the advantages of great elastic modulus, high tensile strength, good heat-sealing property and excellent processing property. The thickness can be effectively reduced when the embossed film is used, so as to save cost. The embossed film can be used on occasions highly requiring anti-pollution heat-sealing.
Description
Technical field
The present invention relates to a kind of high very high-strength heat sealability graining film and preparation method thereof, particularly a kind of application curtain coating pressure
Thin film prepared by stricture of vagina technique.
Background technology
Composite plastic flexible packing material major part is all formed by which floor Film laminated, is typically had by function and is stressed to distinguish
The compound composition of film layer, such as：Adhesive linkage provides heat sealability, usually blow-molding polyethylene (IPE) thin film, curtain coating polyethylene
(CPE) thin film, cast polypropylene (CPP) thin film and EVA (ethylene-vinyl acetate copolymer) thin film；The power that substrate layer is provided
Learn performance and functional performance, generally biaxially oriented polyester film (BOPET), BON biaxially oriented nylon film (BOPA), two-way drawing
The resistances such as polypropylene stretched film (BOPE), coating polyvinylidene chloride film (PVDC), polyvinyl alcohol film (PVA), aluminium foil, paper
Every the good material of property.Simultaneously the number of plies and formula of each film layer are optimized according to the field applied, therefore, composite plastic
Flexible packing material applied range.But, the thicker shortcoming of current composite plastic flexible packing material generally existing, its raw material
Materials are more, relatively costly.
Additionally, in order to reduce material cost, the casting films thinner thickness for often using, its curtain coating film dynamic performance is corresponding
Reduce with thickness, easily produce that pinprick, mechanical properties decrease, temperature tolerance are poor during the processing and use of material, endure
Degree is little, and during as defending material wrapper, binding material easily tears thin film, and heat sealability has high demands.Meanwhile, in its production process
In, the thickness of its thin film is difficult to control to, and causes its film performance unbalanced.
The content of the invention
It is an object of the invention to provide a kind of high very high-strength heat sealability graining film, while having high elastic modulus, height
Tensile strength, with good heat sealability, and its processing characteristics is excellent, and thickness can be effectively reduced when using, cost-effective,
The occasion for having high request to antipollution heat-sealing can be used in.
Further object is that providing the preparation method of the very high-strength heat sealability graining film of this height, using should
Method prepare thin film have thickness deviation little, produce it is continuous the characteristics of.
The very high-strength heat sealability graining film of height of the present invention, it is characterised in that comprising three-decker：(1) adhesion coating, bag
Metallocene PE containing 30-60wt%, 5-50wt%LDPE and 20-35wt%HDPE；(2) intermediate layer, includes 75-
The MDPE and 10-25wt%LDPE of 90wt%；(3) backing layer：Comprising 70-90wt%HDPE and 10-30wt%LDPE.
The gross thickness of trilamellar membrane structure is 20-30 microns；Wherein adhesion coating: intermediate layer: backing thickness degree ratio is 1-1.5:
0.7-0.8: 0.5, more preferably：1.25∶0.75∶0.5.
The metallocene PE is the linear low density polyethylene (LLDPE) (mLLDPE) of metallocene catalysis, is ethylene and other alkene
The copolymer of the copolymer of hydrocarbon monomer, such as ethylene and 1-butylene, 1- alkene or 1- octenes.Melt index (MI) is less than or equal to
1.0g/10min, density is 0.900-0.908 grams per cubic centimters.
The LDPE is Low Density Polyethylene, and melt index is 2-3g/10min, and density is 0.918-0.925g/cm3；
The HDPE is high density polyethylene (HDPE), and melt index is 3-4g/10min, and density is 0.951-0.963g/cm3；
The MDPE is medium density polyethylene, and melt index is 4g/10min, and density is 0.926-0.940g/cm3；
Preferably, the content of mLLDPE is 50-60wt%, 5-30wt%LDPE and 20-35wt%HDPE in the adhesion coating；
Can be containing standard additive such as antioxidant, anti-blocking agent, antistatic additive, smooth in each film layer component
Agent, pigment, dyestuff etc..According to specifically used field and performance requirement, can be added accordingly.
Preparing the method for the very high-strength heat sealability graining film of above-mentioned height is：Using three-layer co-extruded casting films graining film unit,
Raw material is extruded according to above-mentioned three-decker：(1) raw material of each film layer, and mix homogeneously are configured；(2) will match somebody with somebody in step (1)
Material is added separately in different extruders, and each film layer raw mixture is respectively by different extruders in 180-280 DEG C of temperature range
Melted, plastified, being extruded and conflux in same T-shaped mould head, die head is flowed out melt Jing chill rolls and is cooled into diaphragm, obtains final product three layers
Coextrusion casting film；(3) again by the three-layer co-extruded casting films Jing dandy roll obtained in (2), in its thermosphere surface extruding embossing；(4)
Optional, Jing after conventional corona or flame treatment, obtain final product three-layer co-extruded curtain coating graining film.
Wherein, the chiller is chill roll；According to the demand of different product, chill roll can be multiple series connection, and
Chilling temperature can be to arrange in 0 DEG C -60 DEG C in scope；The screw rod of extruder is straight in the three-layer co-extruded casting films graining film unit
Footpath is respectively 45/90/45mm, and the draw ratio of the screw rod of extruder is 35: 1, and extrusion dimension is 50-200m/min.With
Preferably three extruder screw rotating speeds are adhesion coating: intermediate layer: backing layer=30rpm: 50rpm under upper component proportion and appointed condition
∶75rpm。
Advantageous Effects acquired by the present invention are：
(1) adjusted by selecting the consumption of each layer component different densities and melt index each film layer final densities and
Die orifice mobility, makes gained thin film have high modulus, particularly initial moduluss, to meet production line quantity-produced requirement；
Meanwhile, by controlling the technological parameter of three-layer co-extruded casting films graining film unit and then realizing the thickness of three composite films of control
Proportioning so that sandwich diaphragm three film layers when stress is received have close deformation variation tendency, and then cause it
Physical and mechanical propertiess are maximized, and huge deformation or broken will not be caused because the performance indications of a film layer reach maximum in advance
Split so that drastically losing occurs in sandwich diaphragm overall performance.
(2) melt index (MI) of generally curtain coating membrane material requires that in the range of 2-8 the application refers to by adopting compared with low melt
The mLLDPE of number (MI≤1.0g/10min) can improve the gluing thermostability of the modulus (especially initial moduluss) of obtained thin film,
So that adhesion coating has high heat sealability and outstanding contamination resistance.
(3) make compositionss that there is excellent processing characteristics by adjusting melt index (MI), add man-hour to protect at high shear rates
Hold extrusion stability.
(4) special equipment need not be used, is capable of achieving on the basis of existing equipment.
Above feature enables that the very high-strength heat sealability graining film of the height of the application is entirely appropriate to be applied to hygienically packaged film,
And be used in and have the occasion of high request to antipollution heat-sealing.
Specific embodiment
The present invention is described in further detail with reference to concrete real mode, is only to inventive technique in concrete mode
The checking of effect, due to can in a variety of ways implement the present invention, therefore this enforcement without departing from the premise in the spirit of the present invention
Mode is illustrative and be not restrictive.
Raw material used in embodiment：
mLLDPE：SP0510 (Japanese Pu Ruiman), melt index 1.2g/10min, density is 0.903g/cm3；
HDPE：HDPE/8049/ Holland DSM, melt index 5g/10min, density is 0.953g/cm3；
LDPE：FA201-0 SUMITOMO CHEMICALs, 2g/10min, density：0.919g/cm3；
MDPE：MBO435 (Brazilian Braskem), melt index 4g/10min, density is 0.9333g/cm3；
The three-layer co-extruded curtain coating of timber-used of defending of the application design requirement embosses composite membrane technology requirement：
Finished product thickness 20-30 microns
Finished width 1200-2000mm
Longitudinal tensile strength >=7.5MPa
Cross directional stretch fracture strength >=7.5Mpa
Longitudinal elongation at break rate >=500%
Transverse breakage percentage elongation >=600%
5 DEG C of difference ＜ of surface temperature and indoor temperature when film winds
Film roll palpus surfacing, two ends are neat.
The main performance test index of table 1 and testing standard
The three-layer co-extrusion tape casting machine for being adopted in the present embodiment is the multi-layer co-extruded curtain coating embossing film production lines of SJLY-, presses
It is prepared according to the formula in table 2 below, the screw diameter of three extruders is followed successively by 45/90/45mm, the screw rod of three extruders
Draw ratio be 35: 1, barrel zone temperature：210 DEG C, 230 DEG C, 240 DEG C, 255 DEG C, 265 DEG C totally 5 sections, T Mould Breadth degree is 2.4m, with
T die heads are extruded at 180-280 DEG C, and extrusion dimension is 150-200m/min.Three in embodiment 1-8 and comparative example 1-4
The respective extruder screw rotating speed of tunic is respectively adhesion coating: intermediate layer: backing layer=30rpm: 50rpm: 75rpm.
The curtain coating of table 2 embossing composite membrane embodiment and comparative example formula
The film prepared according to the formula of embodiment 1-8 and comparative example 1-4 and above-mentioned preparation method is carried out into performance survey
Examination, averages and the result for obtaining is compiled in table 3
The three-layer co-extruded curtain coating stricture of vagina press mold performance test table of table 3
Knowable to the data in table 3, when ratio of the component in required restriction in each layer in three-layer co-extruded curtain coating stricture of vagina press mold
When in the range of example, its performance indications can reach design and use requirement.But as shown in comparative example 1-4, only when in adhesion coating
When the content of mLLDPE exceeds 30-60%, its stretching and the performance indications for rupturing occur in that fluctuation, and have less than required finger
The item of scale value.It can be seen that, by the final densities for selecting the consumption of each layer component to adjust each film layer, make gained thin film have compared with
Good comprehensive mechanical performance.
Comparative example 5-8 in addition to screw speed, using the processing step of embodiment 7.
The screw speed value of comparative example 5 is, adhesion coating: intermediate layer: backing layer=50rpm: 50rpm: 50rpm；
The screw speed value of comparative example 6 is, adhesion coating: intermediate layer: backing layer=75rpm: 75rpm: 75rpm；
The screw speed value of comparative example 7 is, adhesion coating: intermediate layer: backing layer=35rpm: 50rpm: 70rpm；
The screw speed value of comparative example 8 is, adhesion coating: intermediate layer: backing layer=40rpm: 50rpm: 60rpm；
By in the performance parameter test result remittance table 3 of comparative example 5-8 for obtaining.It can be seen that, in material proportion identical feelings
Under condition, carry out producing the three-layer co-extruded curtain coating stricture of vagina press mold ratio for obtaining using differentiated screw speed and use identical screw speed
The three-layer co-extruded curtain coating stricture of vagina press mold for obtaining has more preferable mechanical performance.Meanwhile, even if under differentiated screw speed, obtaining
Three-layer co-extruded curtain coating stricture of vagina press mold performance still have difference, this be because although trilamellar membrane is combined with each other, but its is right
Bearing mainly on the bearing of trend of single layer in external force.It is somebody's turn to do when certain layer of external force being subject on the direction for extending exceedes
During the limit of tunic, strong deformation or rupture failure will occur, now this destruction may result in the layer cannot bear this
External force, and the external force is acted on completely in other film layers so that the three-layer co-extruded curtain coating stricture of vagina press mold only 1 or 2 tunics are holding
Acted on by external force, this necessarily causes its ability to bear to greatly reduce.Therefore, illustrate before composition and processing technique identical
(composition in technical scheme can provide stable film mouth processing stability) is put, can be made by adjusting screw speed
The stress and deformation variation tendency convergence for obtaining different film layers is identical so that it is when suffering that external force is destroyed close to the film institute energy
Bear the peak value of external force.Improved by technologic change, optimize the mechanical performance of three-layer co-extruded curtain coating stricture of vagina press mold.And material
Mechanical deformation strong or weak relation macro manifestations be obtained three-layer co-extruded curtain coating stricture of vagina press mold each layer thickness ratio.Therefore,
Knowable to integrated embodiment 1-8, the experimental result of comparative example 1-8, the density of the three-layer co-extruded thickness and single layer for being cast stricture of vagina press mold
There is direct relation with its mechanical property to a certain extent.And the three-layer co-extruded curtain coating stricture of vagina press mold of the application composition and use
Under requirement, through above-mentioned analysis, digital simulation and lot of experiment validation, adhesion coating: intermediate layer: backing layer=30rpm is found:
The deformation tendency of each film layer in three-layer co-extruded curtain coating stricture of vagina press mold when 50rpm: 75rpm is closest.The resultant force of its film
Learn performance and be also at preferable level.And then preparation technology is optimized accordingly.
In order to realize identical the brought power of stress and deformation variation tendency convergence of the different film layers of the thin-film material of preparation
Learn the imagination of the raising in index.Through many experiments, selection is presented as in the component of material and density of fraction and melting is referred to
Several cooperations, and the optimization brought by screw speed under the premise of extruder other specification identical is presented as in technique.
These two aspects is targetedly improved, and is easily realized for technique productions, it is not necessary to add new equipment.
In addition, the layer coextrusion casting stricture of vagina press mold prepared in Example 7 and comparative example 1, carries out heat seal strength test,
The results are shown in Table 4.
The three-layer co-extruded curtain coating stricture of vagina press mold heat seal strength test table of table 4
It can be seen that, adding proper amount of mLLDPE in the hotting mask in three-layer co-extruded curtain coating stricture of vagina press mold can provide preferable heat
Sealing property.
Meanwhile, the online thickness detecting system used in multi-layer co-extruded curtain coating embossing film production line, in above-mentioned process conditions
Under the thickness deviation of preparation-obtained thin film be less than 0.2%, meet in industry for the requirement index of film gauge variation.
Claims (10)
1. a kind of high very high-strength heat sealability graining film, it is characterised in that include the three-decker that gross thickness is 20-30 microns
Constitute：(1) adhesion coating, includes metallocene PE, 5-50wt%LDPE and the 20-35wt%HDPE of 30-60wt%；(2) in
Interbed, includes the MDPE and 10-25wt%LDPE of 75-90wt%；(3) backing layer：Comprising 70-90wt%HDPE and 10-
30wt%LDPE.
2. the very high-strength heat sealability graining film of height according to claim 1, wherein the metallocene PE is metallocene
The linear low density polyethylene (LLDPE) (mLLDPE) of catalysis, is the copolymer of ethylene and 1-butylene, 1- hexenes or 1- octenes, melt index (MI)
Less than or equal to 1.0g/10min, density is 0.900-0.908g/cm3。
3. the very high-strength heat sealability graining film of height according to claim 1, wherein the LDPE is Low Density Polyethylene, melts
It is 2-3g/10min to melt index, and density is 0.918-0.925g/cm3；The HDPE is high density polyethylene (HDPE), and melt index is 3-
4g/10min, density is 0.951-0.963g/cm3；The MDPE is medium density polyethylene, and melt index is 4g/10min, close
Spend for 0.926-0.940g/cm3。
4. the very high-strength heat sealability graining film of height according to claim 2, wherein the adhesion coating is comprising 50-60wt%
MLLDPE, 5-30wt%LDPE and 20-35wt%HDPE.
5. the very high-strength heat sealability graining film of height according to claim 1, its adhesion coating：Intermediate layer：Backing thickness degree ratio is
1-1.5:0.7-0.8:0.5。
6. the very high-strength heat sealability graining film of height according to claim 1, its adhesion coating：Intermediate layer：Backing thickness degree ratio is
1.25：0.75：0.5.
7. the preparation method of very high-strength heat sealability graining film as claimed in claim 1 high, it is characterised in that：By raw material according to
The component of the very high-strength heat sealability graining film of the arbitrary height carries out raw material configuration in claim 1-6, using three-layer co-extruded stream
Prolong film graining film unit to be prepared, its concrete steps includes：
(1) configure the raw material mix homogeneously of each film layer according to raw material；
(2) dispensing in step (1) is added separately in different extruders, each film layer raw mixture is respectively by different extruders
Melted, plastified, being extruded and conflux in same T-shaped mould head in 180-280 DEG C of temperature range, it is cold that die head is flowed out melt Jing chill rolls
But diaphragm is formed, three-layer co-extruded casting films are obtained final product；
(3) again by the three-layer co-extruded casting films Jing dandy roll obtained in (2), in its thermosphere surface extruding embossing；
(4) Jing after conventional corona or flame treatment, Jing obtains final product three-layer co-extruded curtain coating graining film.
8. according to the preparation method of the very high-strength heat sealability graining film of the height described in claim 7, wherein, according to different product
Demand, chill roll can be multiple series connection, and chilling temperature can scope be 0 DEG C -60 DEG C in arrange.
9. according to the preparation method of the very high-strength heat sealability graining film of the height described in claim 7, wherein, it is described three-layer co-extruded
The screw diameter of extruder is 45/90/45mm in casting films graining film unit, and the draw ratio of the screw rod of extruder is 35:1, squeeze
It is 50-200m/min to go out production line degree.
10. according to the preparation method of the very high-strength heat sealability graining film of the height described in claim 7, wherein, extruder screw
Rotating speed is respectively adhesion coating：Intermediate layer：Backing layer=30rpm：50rpm：75rpm.
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| CN104339794A (en) * | 2014-10-30 | 2015-02-11 | 昆山金盟塑料薄膜有限公司 | Composite membrane |
| CN104354415B (en) * | 2014-11-15 | 2015-09-09 | 佛山新长盛塑料薄膜有限公司 | A kind of puncture-resistant oil resistivity heat-sealing compound counterdie and preparation method thereof |
| CN107458057A (en) * | 2017-07-28 | 2017-12-12 | 四川兴达塑料有限公司 | A kind of grease proofing PE preservative films |
| CN109203616B (en) * | 2018-07-11 | 2021-01-08 | 银金达(上海)新材料有限公司 | Three-layer co-extrusion casting film and preparation method thereof |
| CN109016750A (en) * | 2018-07-26 | 2018-12-18 | 黄山永新股份有限公司 | A kind of polyethylene embossing packaging film and its production technology |
| CN109749236A (en) * | 2018-12-24 | 2019-05-14 | 东莞市杰士奇塑胶科技有限公司 | The formula that a kind of MODIFIED PP film, its production method and this method use |
| CN110181911A (en) * | 2019-06-27 | 2019-08-30 | 常州工程职业技术学院 | A kind of multi-layer co-extruded polyethylene torsion film of simple tension |
| CN110328821B (en) * | 2019-07-22 | 2021-10-12 | 广东安德力新材料有限公司 | Extinction label film, preparation method thereof and preparation method of transparent label film |
| CN110816004A (en) * | 2019-11-19 | 2020-02-21 | 山东亚新塑料包装有限公司 | Ultralow-temperature PE (polyethylene) membrane and raw material process thereof |
| CN112895647B (en) * | 2021-02-07 | 2023-03-21 | 黄山永新股份有限公司 | Uniaxially stretched polyethylene resin film and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350843A (en) * | 2011-09-13 | 2012-02-15 | 佛山新长盛塑料薄膜有限公司 | Formula of standing bag laminated film with high impact resistance and high stiffness |
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| BR112012005433B1 (en) * | 2009-09-11 | 2021-03-02 | Tetra Laval Holdings & Finance Sa | polymeric film, thermomechanically stable, heat sealable, packaging laminate, packaging container for liquids, and method for making the polymeric film |
| CN102294867B (en) * | 2011-07-13 | 2012-11-07 | 佛山新长盛塑料薄膜有限公司 | Optical-grade self-adhesive polyethylene protective film and preparation method thereof |
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2012
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| CN102350843A (en) * | 2011-09-13 | 2012-02-15 | 佛山新长盛塑料薄膜有限公司 | Formula of standing bag laminated film with high impact resistance and high stiffness |
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