CN106795344A - Polypropylene resin composite and the film being produced from it - Google Patents
Polypropylene resin composite and the film being produced from it Download PDFInfo
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- CN106795344A CN106795344A CN201580055808.2A CN201580055808A CN106795344A CN 106795344 A CN106795344 A CN 106795344A CN 201580055808 A CN201580055808 A CN 201580055808A CN 106795344 A CN106795344 A CN 106795344A
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- ethylene
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- polypropylene resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/02—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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
-
- 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
-
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Wrappers (AREA)
Abstract
The present invention relates to polypropylene resin composite.More specifically, it is related to a kind of impact resistance and Thermoadhesive excellent, orange peel occurs few particularly after cooking disinfection, excellent appearance, it is adapted to the polypropylene resin composite of cooking food packaging applicationss, is related to a kind of polypropylene resin composite comprising Noblen or ethylene, propylene random copolymer and the ethylene-propylene block copolymer of ethylene propylene rubber polymerization.
Description
Technical field
The present invention relates to polypropylene resin composite.More specifically, it is related to a kind of impact resistance and Thermoadhesive excellent,
Particularly after cooking disinfection there is few, excellent appearance in orange peel, be adapted to poly- the third of cooking food (retortfood) packaging applicationss
Olefine resin composition, is related to a kind of Ethylene-Propylene Block Copolymer being polymerized comprising Noblen and ethylene-propylene rubber
Polypropylene resin composite.
Background technology
Sterilization processing will be carried out after packaging for foodstuff and the long-term cooking food packaging taken care of under normal temperature or low temperature, it is and original
Glass or metal can compare, treatment is easy, occupies that volume is small, packaging material it is low-cost, thus be to widely use
Packing technique.
Main sterilized boiling container at 120~135 DEG C is that polypropylene, polyester, nylon film and metal foil etc. are entered
Row is bonded and used with multilayer form, and according to purposes, by polyester/nylon/metal foil/polypropylene or polyester/metal foil/poly- third
What the structure of alkene etc. was formed.Wherein, polypropylene generally uses Ethylene-Propylene Block Copolymer, is processed into without stretched PTFE film (non-
Oriented cast polypropylene film, CPP film), most medial surface is located at as thermal adhesive layer.
CPP films have required heat resistance because sterilized at high temperature, and are needed for fracture when preventing packaging for foodstuff and transport
There are the characteristics such as impact resistance, Thermoadhesive.Further, since the outward appearance of packaging should be beautiful, so that being sent out after suppressing sterilization
The generation of (orange peel) of raw fine irregularities.
In Japan Patent 2012-184302A, to the linea low density-polyethylene (LLDPE) using metallocene catalyst
Mixed, it is suppressed that orange peel occurs, but causes heat adhesive strength to decline due to being mixed with LLDPE.Therefore Japanese special
In sharp 2013-087275A, added in the masking of CPP films and be mixed with rubber constituent and high density-polyethylene (HDPE), suppressed
Orange peel generation, but there occurs as the uneven problem of the dispersion for mixing a large amount of rubber constituents and HDPE and expense increase,
Have the shortcomings that to be difficult to control to dispersed phase according to process equipment simultaneously.
The content of the invention
Technical problem
It is an object of the invention to provide one kind can high temperature sterilization, impact resistance and bonding characteristics are excellent, after sterilization
Outward appearance is beautiful, i.e. can suppress the polypropylene for films resin combination of orange peel generation.
Another object of the present invention is to provide one kind can high temperature sterilization, impact resistance and bonding characteristics are excellent, and
Even if there is no the film of orange peel after sterilization yet.
Technical scheme
In order to reach the purpose of the present invention, the present invention provides a kind of polypropylene resin composite, it is characterised in that comprising by
The ethene that the weight % of Noblen 65~82 and the weight % of ethylene propylene rubber 18~35 are periodically polymerized in reactor
Propylene-based block copolymer, the ethylene contents of the ethylene propylene rubber are 25~50 weight %, are decahydronaphthalene, 135 DEG C in solvent
The intrinsic viscosity of the solvent extractable matter in Shi Suoshu ethylene propylene rubbers is 1~2.5dl/g.
In order to reach another object of the present invention, the present invention provides one kind and is manufactured by polypropylene resin composite of the invention
Film.
Invention effect
Polypropylene resin composite of the invention can be used for the thermal adhesive layer of the boiling packaging being made up of multilayer, be in
Existing excellent impact resistance and bonding characteristics, suppress the generation of the orange peel after sterilization, thus are expected to be suitable for requirement high temperature
Sterilized boiling packaging applicationss.
Preferred forms
The present invention is described in more detail below.
According to one embodiment of present invention, there is provided a kind of polypropylene resin composite, it is characterised in that comprising by (a)
The second that the weight % of Noblen 65~82 and the weight % of (b) ethylene propylene rubber 18~35 are periodically polymerized in reactor
Allyl alkene block copolymer, the ethylene contents of the ethylene propylene rubber are 25~50 weight %, are decahydronaphthalene, 135 in solvent
DEG C when, the intrinsic viscosity of the solvent extractable matter of the ethylene propylene rubber is 1~2.5dl/g.
For polypropylene resin composite of the invention, the acrylic resin has the resistance to of suitable high temperature sterilization
Hot, impact resistance and bonding characteristics are excellent, suppress the orange peel after sterilization such that it is able to provide with excellent appearance
CPP films.
Composition (a) Noblen
Noblen in the composition (a) is separately injected into propylene polymerization and forms in polymerizing reactor.It is described poly-
The polymerization of compound will not be particularly limited according to usual way well-known in the art in the present invention.
The composition (a) is 65~82 weight % in Ethylene-Propylene Block Copolymer.If the content of composition (a) is not
65 weight % of foot, then crystallinity is low, so that heat resistance declines, heat adhesive strength declines.In addition, if more than 82 weight %,
Then impact resistance declines, and orange peel occurs after sterilization, thus is worthless.
Composition (b) ethylene-propylene rubber
The composition (b) after the composition (a) of being polymerized, in ensuing polymerizing reactor, in the composition (a)
In the presence of continuous polymerization.The polymerization of the rubbery copolymer is according to usual way well-known in the art, this hair
Will not be particularly limited in bright.
The constituent of the composition (b) continuous polymerization in reactor after composition (a) polymerization, composition (a) and composition (b)
A matter part is propylene chain, is identical, dispersed by means of the affinity of two-phase such that it is able to minimize heat bonding special
Property decline, improve impact strength, suppress sterilization after orange peel generation.The composition (b) is embedding relative to ethylene-propylene
Section copolymer, is polymerized by 18~35 weight %.
In the composition (b), the intrinsic viscosity (decahydronaphthalene solvent) of preferred solvent extract is 1~2.5dl/g.It is described
If intrinsic viscosity reduces less than 1dl/g, the size of rubber constituent, the molecular weight of rubber constituent is small, so that under impact characteristics
Drop.Intrinsic viscosity if it exceeds 2.5dl/g, then so that dispersiveness declines, kill by the size increase of rubber constituent, and luming
There is orange peel after bacterium.In addition, when there is locality caking, the locality fracture of sack film may occur after sterilization.
Also, the dispersion of rubber is occurred by composition (a) with the viscosity differences of composition (b), thus optimal ethylene propylene is embedding
In section copolymer in intrinsic viscosity and the ethylene-propylene block copolymer of solvent insoluble component solvent extractable matter intrinsic viscosity it
It is 0.6~1.4 than { (intrinsic viscosity of solvent extractable matter)/(intrinsic viscosity of solvent insoluble component) }.Intrinsic viscosity such as
Less than 0.6, then the size of rubber constituent reduces fruit, so that impact characteristics decline, if it exceeds 1.4, then there is rubber constituent
Caking, so that dispersiveness declines.
In the composition (b), optimal ethylene content is 25~50 weight %.If the ethylene contents are less than 20 weights
Amount %, then the elasticity reduction of rubber, impact resistance declines, if it exceeds 50 weight %, then composition (a) and composition (b) mix
Property reduce so that rubber phase size increase, therefore reduce dispersiveness, cause occur orange peel.
It is preferred that the melt index of the acrylic resin is 1~10g/10 minutes (1238,230 DEG C of ASTM D).It is described molten
If melting index less than 1g/10 minutes, the mobility of melting resin declines, and load is extruded in the masking of CPP films and is risen, raw
Yield declines to a great extent, if it exceeds 10g/10 minutes, then the viscosity of the melting resin for being spued from mould (die) declines, so that
When CPP films are molded, thickness evenness declines, and due to low molecular weight, mechanical strength declines, thus is worthless.
Polypropylene resin composite of the invention can further include one's own profession within the scope without prejudice to the object of the present invention
Additive known in the industry and solvent.Specifically, for example can be using antioxidant, nucleator, heat-resisting stabilizing agent, weather-proof steady
Determine agent, charged preventor, lubricant, help sliding additive, fire retardant, pigment, dyestuff etc., it is preferable that be heat-resisting and resistance in order to assign
Stability is waited, antioxidant and ultra-violet absorber etc. can be added.The additive can not damage the object of the invention
In the range of, practitioner can suitably adjust its content.
For preparing the method for polypropylene resin composite of the invention, have no particular limits, it is possible to use generally
The preparation method of known polypropylene resin composite, or in order to reach the purpose of the present invention, can be with a deformation part
Mode is utilized.In addition, constitute the composition of the resin combination limited without special order, can be according to desired suitable
Sequence is selected and mixed, and specifically, for example, can be prepared by means of following method, but not limited to this, and methods described is
For, by each composition as described above and other additives be injected into the desired amount kneader (kneader), roller (roll),
After the kneading machines or single shaft/biaxial extruder etc. such as banbury (Banbury mixer), and using the machine to input original
The method that material is kneaded.
The present invention provides the film manufactured with the polypropylene resin composite.
The film can apply to diaphragm, the dress that liquid crystal display device etc. requires the electronic product of high precision
Plaque (deco sheet), retort pouch etc..Retort pouch can be particularly preferably applied to.
Specific embodiment
Below by embodiment, the present invention is illustrated in greater detail.But, these embodiments are used to exemplarily illustrate this hair
Bright, the scope of the present invention is not limited to these embodiments.
Embodiment 1~2 and comparative example 1~4
By constituting for table 1 below, after the ethylene contents being prepared into ethylene propylene rubber reach 25 weight %, each step is adjusted
Polymerization amount so that the content ratio of composition (a) and composition (b) is when composition (a) is 75 weight %, composition (b) is 25 weights
Amount %, intrinsic viscosity ratio turns into 0.6, so as to be kneaded the ethylene-propylene block copolymer of (a), (b).
In the ethylene-propylene block copolymer obtained in the step, the weight % of antioxidant 0.1 and nertralizer are kneaded
0.02 weight %, extrusion processing is carried out in biaxial extruder and after being made particle, using common cast film extrusion equipment,
Mold the film of 0.07mm thickness.In film masking, extruder temperature is 230 DEG C, the chill roll needed for film masking
Temperature is 30 DEG C.The physical property of the film of such masking is have rated, its result is shown in table 1.
Experimental example
The experimental technique that will be used in the present invention arranges as follows.
* property measurement method * *
(1) melt index (Melt Index)
According to ASTM D1238 conditions, measured under conditions of 230 DEG C, 2.16kg.
(2) ethylene contents
Using infrared absorption spectrometer (FT-IR), using 720,730cm-1Characteristic crest, measures ethylene contents.
(3) intrinsic viscosity
Under 135 DEG C of decahydronaphthalene solution, using viscosity measuring instrument, intrinsic viscosity is measured.
Intrinsic viscosity ratio is calculated according to following.
The solvent extractable matter of ethylene propylene rubber composition (b) is represented using the solvable composition at 150 DEG C of decahydronaphthalene solvent.
Intrinsic viscosity ratio=(intrinsic viscosity of solvent extractable matter in ethylene-propylene block copolymer) ÷ (ethylene-propylene blocks
The intrinsic viscosity of solvent insoluble component in copolymer)
(4) crooked elastic rate
Measured according to ASTM D790 methods.
(5) Izod impact strengths
According to ASTM D256 methods, measured under normal temperature and low temperature (0 DEG C).
(6) heat distortion temperature
Measured according to ASTM D648 methods.
(7) film modulus
70 μm of film is cut into 15mm wide, 100mm long, in UTM, is measured with the draw speed of 300m/ minutes.
(8) dart impact strength
70 μm of films are measured according to ASTM D4226 methods.
(9) heat adhesive strength
After laminating polypropylene film (70 μm), aluminium foil (9 μm), nylon (15 μm), PET (12 μm), in 2kgf/cm2Pressure
Bonded 1 second under power, be shaped to sack.
Be cut into for sterilized front/rear adhesive film after sterilization under conditions of 130 DEG C, 20 minutes by the sack that will be molded
15mm wide, measures the peel strength of film.
(10) whether there is orange peel
Confirm sack outward appearance after sterilization to evaluate whether orange peel.
Table 1
As shown in table 1, acrylic resin of the invention shows that Izod impact strengths and heat distortion temperature higher etc. is excellent
Different mechanical properties, film impact strength is high, and good heat adhesive strength is also showed that after sterilization.Even if in addition, outward appearance side
Also not there is no orange peel in face, so as to show with excellent characteristic.
Conversely, although the acrylic resin heat adhesive strength of comparative example 1 is good, the content of composition (b) is low, so that dart
Impact strength declines to a great extent, and a large amount of generation orange peels after sterilization, so that bad order.Comparative example 2 and 3 is due to composition (b)
Content, Izod impact strengths and dart impact strength are good, but solvent extractable matter intrinsic viscosity and intrinsic viscosity than high so that
Orange peel is there occurs after sterilization.Particularly, comparative example 2 due to the ethylene contents of composition (b) it is high, sterilized front/rear heat bonding is strong
Degree change is serious.Comparative example 4 is high due to the content of composition (b), and, less than 5kgf, not meeting business should for heat adhesive strength after sterilization
With.
Claims (6)
1. a kind of polypropylene resin composite, it is characterised in that
Comprising by the weight % of Noblen 65~82 and the weight % of ethylene propylene rubber 18~35 in reactor periodically
The ethylene-propylene block copolymer of polymerization,
The ethylene contents of the ethylene propylene rubber are 25~50 weight %,
Be decahydronaphthalene in solvent, the intrinsic viscosity of solvent extractable matter at 135 DEG C in the ethylene-propylene block copolymer for 1~
2.5dl/g。
2. polypropylene resin composite according to claim 1, it is characterised in that
It is decahydronaphthalene, the intrinsic viscosity of solvent extractable matter at 135 DEG C in the ethylene-propylene block copolymer and institute in solvent
State the intrinsic viscosity ratio [intrinsic viscosity of solvent extractable matter of the intrinsic viscosity of solvent insoluble component in ethylene-propylene block copolymer
The intrinsic viscosity of degree/solvent insoluble component] it is 0.6~1.4.
3. polypropylene resin composite according to claim 1, it is characterised in that
At 230 DEG C, the melt index of the ethylene-propylene block copolymer is the scope of 1~10g/10 minutes under 2.16kg.
4. the film that a kind of polypropylene resin composite as any one of claims 1 to 3 is manufactured.
5. film according to claim 4, it is characterised in that
The film is without stretched PTFE film.
6. film according to claim 5, it is characterised in that
The film is used in diaphragm, decorative panel or retort pouch.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140157223A KR101598715B1 (en) | 2014-11-12 | 2014-11-12 | Polypropylene resin composition and film produced by the same |
| KR10-2014-0157223 | 2014-11-12 | ||
| PCT/KR2015/004206 WO2016076490A1 (en) | 2014-11-12 | 2015-04-28 | Polypropylene resin composition and film prepared therefrom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106795344A true CN106795344A (en) | 2017-05-31 |
| CN106795344B CN106795344B (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580055808.2A Active CN106795344B (en) | 2014-11-12 | 2015-04-28 | Polypropylene resin composition and film made therefrom |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101598715B1 (en) |
| CN (1) | CN106795344B (en) |
| WO (1) | WO2016076490A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500541A (en) * | 2019-09-16 | 2021-03-16 | 韩华道达尔有限公司 | Polypropylene resin composition having excellent whitening resistance and heat resistance, method for preparing the same, and molded article therefrom |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101871072B1 (en) * | 2016-12-21 | 2018-06-25 | 한화토탈 주식회사 | Polypropylene resin composition for easy peel film and article produced with the same |
| KR101988156B1 (en) | 2018-01-22 | 2019-06-11 | 한화토탈 주식회사 | Polypropylene Resin for Insulating Power Cables |
| KR102124702B1 (en) | 2018-11-14 | 2020-06-19 | 한화토탈 주식회사 | Polypropylene resin composition with excellent stress-whitening resistance, process for preparing the same, and article molded therefrom |
| KR102590937B1 (en) * | 2018-12-20 | 2023-10-18 | 롯데케미칼 주식회사 | Polypropylene block copolymer resin with high thermal adhesiveness and impact resistance |
| KR102209154B1 (en) | 2019-12-24 | 2021-01-29 | 한화토탈 주식회사 | Polypropylene Resin Composition with Excellent Stress-whitening Resistance, Process for Preparing the Same, and Article Molded Therefrom |
| KR102587753B1 (en) | 2021-08-31 | 2023-10-11 | 한화토탈에너지스 주식회사 | Polypropylene Resin Composition and Article Molded Therefrom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143564A (en) * | 1995-07-24 | 1997-02-26 | 蒙岱尔北美股份有限公司 | Polypropylene blown film |
| CN1653113A (en) * | 2002-05-10 | 2005-08-10 | 昭和电工塑料产品株式会社 | Cast film, process for production thereof, and bags made of the film |
| CN101175796A (en) * | 2005-05-12 | 2008-05-07 | 北方科技有限公司 | Transparent easy tearable film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2998448B2 (en) * | 1992-09-16 | 2000-01-11 | 住友化学工業株式会社 | Polypropylene block copolymer and its film |
| EP2053086A4 (en) * | 2006-08-11 | 2010-12-22 | Mitsui Chemicals Inc | Propylene resin composition for packaging material |
| KR101007785B1 (en) * | 2008-11-25 | 2011-01-14 | 삼성토탈 주식회사 | Ethylene propylene block copolymer for protective film |
| KR101298417B1 (en) * | 2011-05-16 | 2013-08-20 | 삼성토탈 주식회사 | Polypropylene resin with Excellent stress whitening resistance, Impact strength and Transparency and its Film |
| KR101309329B1 (en) * | 2011-06-28 | 2013-10-14 | 삼성토탈 주식회사 | Polypropylene resin for Protective Film |
-
2014
- 2014-11-12 KR KR1020140157223A patent/KR101598715B1/en active IP Right Grant
-
2015
- 2015-04-28 WO PCT/KR2015/004206 patent/WO2016076490A1/en active Application Filing
- 2015-04-28 CN CN201580055808.2A patent/CN106795344B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1143564A (en) * | 1995-07-24 | 1997-02-26 | 蒙岱尔北美股份有限公司 | Polypropylene blown film |
| CN1653113A (en) * | 2002-05-10 | 2005-08-10 | 昭和电工塑料产品株式会社 | Cast film, process for production thereof, and bags made of the film |
| CN101175796A (en) * | 2005-05-12 | 2008-05-07 | 北方科技有限公司 | Transparent easy tearable film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112500541A (en) * | 2019-09-16 | 2021-03-16 | 韩华道达尔有限公司 | Polypropylene resin composition having excellent whitening resistance and heat resistance, method for preparing the same, and molded article therefrom |
| CN112500541B (en) * | 2019-09-16 | 2023-06-09 | 韩华道达尔能源有限公司 | Polypropylene resin composition having excellent whitening resistance and heat resistance, method for preparing the same, and molded article molded therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106795344B (en) | 2020-01-14 |
| WO2016076490A1 (en) | 2016-05-19 |
| KR101598715B1 (en) | 2016-02-29 |
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