CN104177704A - Method for enhancing properties of film - Google Patents
Method for enhancing properties of film Download PDFInfo
- Publication number
- CN104177704A CN104177704A CN201410416619.0A CN201410416619A CN104177704A CN 104177704 A CN104177704 A CN 104177704A CN 201410416619 A CN201410416619 A CN 201410416619A CN 104177704 A CN104177704 A CN 104177704A
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- China
- Prior art keywords
- film
- ldpe
- improve
- heat
- mpe
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Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention discloses a method for enhancing properties of a film, belonging to the field of plastic films. By respectively improving and researching the strength and smoothness of the film and the properties of the valve and hot blast, a polymerizable monomer is added to enhance the copolymerization property of the film, thereby enhancing the strength; a lubricant is added to enhance the smoothness of the film; a resin is added to improve the inclusion property and low-temperature heat sealability of the film; and finally, the film can be improved according to the practical application performance requirements.
Description
Technical field
The present invention relates to plastics film field, be specifically related to a kind of method that improves film performance.
Background technology
Film is a kind of thin and soft transparent sheet, with plastics, tackiness agent, rubber or other materials, makes, and polyester film is scientific to be interpreted as: by atom, and the 2 dimension materials that molecule or ion deposition form at substrate surface.Example: optical thin film, laminated film, superconducting thin film, polyester film, nylon film, plastics film etc.Film is widely used in electronic apparatus, machinery, the industries such as printing.
Thin-film material refers to that electronic semi-conductor's functional device and optical coating are the main application of thin film technique to thickness to thin metal or organism between several millimeters between monatomic, and the performance of film is different and different according to the field of its application.
Summary of the invention
The object of the present invention is to provide a kind of method that improves film performance, it mainly improves respectively research from thin film strength, slipping and valve, hot blast performance, thereby can improve according to film practical application performance demand.
Technical solution problem of the present invention adopts following technical scheme:
A kind of method that improves film performance is provided, and it mainly improves and improves from thin film strength, film slipping and heat sealability aspect, it is characterized in that: the method for described raising film is as follows:
(1) improve film strength: polyacrylic intensity is high, but polypropylene is general with the consistency of LDPE, can not be completely compatible, when PP is during with LDPE blend, should use containing the co-polypropylene of vinyl monomer mixed or make compatilizer with EVA mutually;
(2) improve blowing ldpe film slipping: the slipping of film is good, can be within the shorter filling time weight of fully filling full regulation, in order to improve the slipping of film, can in LDPE particle, add lubricant;
Be used as having of LDPE lubricant: liquid or solid paraffin; Stearic acid and stearate; Amide substance, as: stearic amide and amine hydroxybenzene etc., low molecular PE wax etc.;
Because the heat sealability of the interpolation film of lubricant reduces, heat-sealing fastness reduces, and the surface printing of film degenerates, and is difficult for making ink to be bonded in surface.Addition generally can be between 0.2 ~ 0.4%, and the kinetic friction coefficient of the film inner layer of general requirement packing film is between 0.18 ~ 0.25;
(3) improve heat sealability: Inclusion
Inclusion heat sealability refers on heat cover and is infected with also and can well seals by dust, ink, precipitate;
What inclusion heat sealability was best is ionic resin, and it even can seal bag under liquid level, is secondly MPE and LLDPE, and metallocene PE (MPE) has the similar inclusion heat sealability of same LLDPE;
Use LLDPE admixture to enter after LDPE, although can improve the inclusion heat sealability of LDPE blown film, improve the obdurability of LDPE blown film, but also improved the heat-sealing temperature of LDPE blown film, generally speaking, the LDPE of same melt index and LLDPE particle, LLDPE fusing point will be higher than the about 10 ℃ of left and right of LDPE;
(4) improve heat sealability: low-temperature heat-sealing
Low-temperature heat-sealing is the essential characteristic of flexible packaging packaging material that high speed auto packer is used, and at lower temperature, heat-sealing can be accelerated heat-sealing speed;
The blending resin that is commonly used to improve LDPE blown film has EVA, MPE and other low melting point ethylene copolymer.The fusing point of EVA reduces with the increase of VA content, for example: the EVA fusing point of VA content 14% is 85 ~ 93 ℃, when VA content is 28%, therefore the fusing point of EVA is 62 ~ 75 ℃, uses LDPE can obtain the LDPE blown film of low-temperature heat-sealing with EVA blend, but that shortcoming is EVA is more soft than LDPE, intensity is low, when using LDPE+EVA blend, in order to improve hot sealing layer intensity, preferably use thicker blown film;
The low-temperature heat-sealing that improves LDPE blown film with MPE is best, can obtain good processing characteristics and good intensity simultaneously.The fusing point of MPE, most of trade mark is between 85 ~ 108 ℃, lower than LDPE fusing point, and MPE melt strength is more taller than LLDPE, and therefore, during MPE blown film, bubble stability is good, and inflation processibility is good, and because melt bonds is good, heat seal strength is high, and reliability is large.
The use cost performance of MPE consumption between 10% ~ 20% is the highest.
Compared with prior art, its beneficial effect is in the present invention: from thin film strength, slipping and valve, hot blast performance, improve respectively research, improve the copolymerizable of film, thereby improve its intensity by adding polymerization single polymerization monomer; Add the slipping of lubricant raising film, by adding resin, improve Inclusion and the low-temperature heat-sealing of film, finally can improve according to film practical application performance demand.
Embodiment
Below the present invention is specifically described.
Improve a method for film performance, it mainly improves and improves from thin film strength, film slipping and heat sealability aspect, it is characterized in that: the method for described raising film is as follows:
1, improve film strength: polyacrylic intensity is high, but polypropylene is general with the consistency of LDPE, can not be completely compatible, when PP is during with LDPE blend, should use containing the co-polypropylene of vinyl monomer mixed or make compatilizer with EVA mutually.
2, improve blowing ldpe film slipping: the slipping of film is good, can be within the shorter filling time weight of fully filling full regulation, in order to improve the slipping of film, can in LDPE particle, add lubricant;
Be used as having of LDPE lubricant: liquid or solid paraffin; Stearic acid and stearate; Amide substance, as: stearic amide and amine hydroxybenzene etc., low molecular PE wax etc.;
Because the heat sealability of the interpolation film of lubricant reduces, heat-sealing fastness reduces, and the surface printing of film degenerates, and is difficult for making ink to be bonded in surface.Addition generally can be between 0.2 ~ 0.4%, and the kinetic friction coefficient of the film inner layer of general requirement packing film is between 0.18 ~ 0.25;
3, improve heat-sealing Inclusion: inclusion heat sealability refers on heat cover and is infected with also and can well seals by dust, ink, precipitate;
What inclusion heat sealability was best is ionic resin, and it even can seal bag under liquid level, is secondly MPE and LLDPE, and metallocene PE (MPE) has the similar inclusion heat sealability of same LLDPE;
Use LLDPE admixture to enter after LDPE, although can improve the inclusion heat sealability of LDPE blown film, improve the obdurability of LDPE blown film, but also improved the heat-sealing temperature of LDPE blown film, generally speaking, the LDPE of same melt index and LLDPE particle, LLDPE fusing point will be higher than the about 10 ℃ of left and right of LDPE;
4, improve heat sealability: low-temperature heat-sealing
Low-temperature heat-sealing is the essential characteristic of flexible packaging packaging material that high speed auto packer is used, and at lower temperature, heat-sealing can be accelerated heat-sealing speed;
The blending resin that is commonly used to improve LDPE blown film has EVA, MPE and other low melting point ethylene copolymer.The fusing point of EVA reduces with the increase of VA content, for example: the EVA fusing point of VA content 14% is 85 ~ 93 ℃, when VA content is 28%, therefore the fusing point of EVA is 62 ~ 75 ℃, uses LDPE can obtain the LDPE blown film of low-temperature heat-sealing with EVA blend, but that shortcoming is EVA is more soft than LDPE, intensity is low, when using LDPE+EVA blend, in order to improve hot sealing layer intensity, preferably use thicker blown film;
The low-temperature heat-sealing that improves LDPE blown film with MPE is best, can obtain good processing characteristics and good intensity simultaneously.The fusing point of MPE, most of trade mark is between 85 ~ 108 ℃, lower than LDPE fusing point, and MPE melt strength is more taller than LLDPE, and therefore, during MPE blown film, bubble stability is good, and inflation processibility is good, and because melt bonds is good, heat seal strength is high, and reliability is large.
The use cost performance of MPE consumption between 10% ~ 20% is the highest.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. a kind of method that improves film performance is provided, and it mainly improves and improves from thin film strength, film slipping and heat sealability aspect, it is characterized in that: the method for described raising film is as follows:
(1) improve film strength: the co-polypropylene adding containing vinyl monomer mixes mutually or makes compatilizer with EVA;
(2) improve blowing ldpe film slipping: in LDPE particle, add lubricant;
Be used as having of LDPE lubricant: liquid or solid paraffin; Stearic acid and stearate; Amide substance, as: stearic amide and amine hydroxybenzene etc., low molecular PE wax etc.;
Because the heat sealability of the interpolation film of lubricant reduces, heat-sealing fastness reduces, and the surface printing of film degenerates, and is difficult for making ink to be bonded in surface.
2. addition generally can be between 0.2 ~ 0.4%, and the kinetic friction coefficient of the film inner layer of general requirement packing film is between 0.18 ~ 0.25;
(3) improve heat sealability: Inclusion
Select the best ionic resin of inclusion heat sealability, MPE or LLDPE to adulterate;
Use LLDPE admixture to enter after LDPE, although can improve the inclusion heat sealability of LDPE blown film, improve the obdurability of LDPE blown film, but also improved the heat-sealing temperature of LDPE blown film, generally speaking, the LDPE of same melt index and LLDPE particle, LLDPE fusing point will be higher than the about 10 ℃ of left and right of LDPE;
(4) improve heat sealability: low-temperature heat-sealing
Select the blending resins such as EVA, MPE and other low melting point ethylene copolymer to improve LDPE blown film low-temperature heat-sealing.
3. a kind of method that improves film performance according to claim 1, it is characterized in that: the low-temperature heat-sealing that described (5) improve LDPE blown film with MPE is best, can obtain good processing characteristics and good intensity simultaneously, the fusing point of MPE is between 85 ~ 108 ℃, lower than LDPE fusing point, and MPE melt strength is more taller than LLDPE, therefore, during MPE blown film, bubble stability is good, and inflation processibility is good, because melt bonds is good, heat seal strength is high, and reliability is large, and the use cost performance of MPE consumption between 10% ~ 20% is the highest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416619.0A CN104177704A (en) | 2014-08-22 | 2014-08-22 | Method for enhancing properties of film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416619.0A CN104177704A (en) | 2014-08-22 | 2014-08-22 | Method for enhancing properties of film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104177704A true CN104177704A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410416619.0A Pending CN104177704A (en) | 2014-08-22 | 2014-08-22 | Method for enhancing properties of film |
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| CN (1) | CN104177704A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079791A (en) * | 2016-08-10 | 2016-11-09 | 浙江金石包装有限公司 | Composite membrane printing variable code and preparation method thereof in a kind of location |
| CN106945366A (en) * | 2017-03-22 | 2017-07-14 | 知为（上海）实业有限公司 | A kind of high speed machine fresh-keeping dedicated film of packaged food and preparation method thereof |
| CN107932939A (en) * | 2017-11-10 | 2018-04-20 | 安徽省方舟九社包装有限公司 | A kind of wet tissue low temperature assembly line automatic packaging production line film processing method |
| CN111688320A (en) * | 2020-06-06 | 2020-09-22 | 湖北富思特材料科技集团有限公司 | Extrusion composite low-temperature heat-sealing shrinkage tobacco film |
| CN113024946A (en) * | 2021-03-08 | 2021-06-25 | 安徽联科水基材料科技有限公司 | High-heat-seal-strength PP (polypropylene) modified material for film blowing and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286272A (en) * | 1999-08-31 | 2001-03-07 | 住友化学工业株式会社 | Ethene-alpha-olefin copolymer and polyethylene composition |
| DE10128711A1 (en) * | 2001-06-13 | 2002-12-19 | Trespaphan Gmbh | Label film useful as a top layer for PS, PP, PE, PVC, metal, and tin plate containers, has improved adhesion and subsequent application |
| CN101787154A (en) * | 2009-12-30 | 2010-07-28 | 上海展骋高分子材料有限公司 | Film special for shockproof buffer air bag and application thereof |
-
2014
- 2014-08-22 CN CN201410416619.0A patent/CN104177704A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1286272A (en) * | 1999-08-31 | 2001-03-07 | 住友化学工业株式会社 | Ethene-alpha-olefin copolymer and polyethylene composition |
| DE10128711A1 (en) * | 2001-06-13 | 2002-12-19 | Trespaphan Gmbh | Label film useful as a top layer for PS, PP, PE, PVC, metal, and tin plate containers, has improved adhesion and subsequent application |
| CN101787154A (en) * | 2009-12-30 | 2010-07-28 | 上海展骋高分子材料有限公司 | Film special for shockproof buffer air bag and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 周祥兴: "聚乙烯吹塑膜的改性", 《塑料包装》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079791A (en) * | 2016-08-10 | 2016-11-09 | 浙江金石包装有限公司 | Composite membrane printing variable code and preparation method thereof in a kind of location |
| CN106945366A (en) * | 2017-03-22 | 2017-07-14 | 知为（上海）实业有限公司 | A kind of high speed machine fresh-keeping dedicated film of packaged food and preparation method thereof |
| CN107932939A (en) * | 2017-11-10 | 2018-04-20 | 安徽省方舟九社包装有限公司 | A kind of wet tissue low temperature assembly line automatic packaging production line film processing method |
| CN111688320A (en) * | 2020-06-06 | 2020-09-22 | 湖北富思特材料科技集团有限公司 | Extrusion composite low-temperature heat-sealing shrinkage tobacco film |
| CN113024946A (en) * | 2021-03-08 | 2021-06-25 | 安徽联科水基材料科技有限公司 | High-heat-seal-strength PP (polypropylene) modified material for film blowing and preparation method thereof |
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Application publication date: 20141203 |