CN106750823A - A kind of PE heat-shrinkable films and its production technology - Google Patents

A kind of PE heat-shrinkable films and its production technology Download PDF

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Publication number
CN106750823A
CN106750823A CN201710037648.XA CN201710037648A CN106750823A CN 106750823 A CN106750823 A CN 106750823A CN 201710037648 A CN201710037648 A CN 201710037648A CN 106750823 A CN106750823 A CN 106750823A
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China
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heat
shrinkable films
hdpe
ldpe
punching
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CN201710037648.XA
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Chinese (zh)
Inventor
江龙义
江嘉
李青
江丽
江薇薇
高海军
徐春
王楷
邵彦凌
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Anhui Shengda Packing Co Ltd
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Anhui Shengda Packing Co Ltd
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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • 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
    • C08L2207/062—HDPE
    • 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)

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a kind of PE heat-shrinkable films and its production technology, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 80~100, MLLDPE metallocenes 4~7, HDPE high density polyethylene (HDPE)s 15~20, LLDPE linear polyethylenes 10~15, Tissuemat E 3~10, production technology mainly comprises the following steps：（1）Raw material outbound →（2）By formula batch mixing →（3）Into main frame →（4）High-temperature mixing →（5）Mould molding →（6）Double air port coolings →（7）Upper traction →（8）Subsidiary engine splitting winding →（9）Semi-finished product →（10）Punching →（11）Rewinding machine →（12）Inspection vanning →（13）Finished product is put in storage.The present invention is the leading production and supply of tobacco business to the PE heat shrink films using punching, the characteristics of it can keep big heat shrink films elongation percentage, good tack and transparency high, and with good tear strength, fracture tensile strength, elongation at break, impact strength, effectively save material, it is possible to decrease 10.79% packing cost.

Description

A kind of PE heat-shrinkable films and its production technology
Technical field
The invention belongs to field of packaging material, and in particular to a kind of PE heat-shrinkable films and its production technology.
Background technology
PE heat shrink films are widely used in the products such as tobacco and wine class, pop can class, mineral water class, various beverage classes, cloth One integral piece assembly package, it has pliability good, and impact resistance, tear resistance are strong, not cracky, be not afraid of tide, the advantages of shrinkage factor is big, It is wound packaging to the goods being deposited on supporting plate, packing material is more consolidated clean and tidy, and more superpower waterproof is widely used In foreign export, papermaking, hardware, plastics, chemical industry, building materials, food pharmaceuticals industry.
Existing PE heat shrink films have limitation in terms of intensity and toughness, and intensity is typically improved using HDPE, but HDPE can be such that the toughness of heat shrink films significantly declines, and cigarette class packs after general whole piece packaging assembly package again, but for two Assembly package PE heat shrink films more than bar, existing PE heat shrink films are easily broken during packed and transported, and waste Greatly, therefore stretching and the toughness of heat shrink films how are improved, and PE heat shrink films used by saving assembly package, become urgently The problem of solution.
The content of the invention
It is an object of the invention to provide a kind of PE heat-shrinkable films and its production technology, with solving above-mentioned background technology The problem of proposition.
The technical problems to be solved by the invention are realized using following technical scheme：
A kind of PE heat-shrinkable films, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 80~100, MLLDPE metallocenes 4~7, HDPE high density polyethylene (HDPE)s 15~20, LLDPE linear polyethylenes 10~15, Tissuemat E 3~10.
Preferably, the melt index MI of the LDPE is 0.3~0.5, and density is 0.920~0.923g/cm3。
Preferably, the melt index MI of the MLLDPE metallocenes is 0.2~0.3, and density is 0.925~0.960g/ cm3。
Preferably, the melt index MI of the HDPE high density polyethylene (HDPE)s is less than 0.02, and density is 0.950 g/cm3With On.
Preferably, the LLDPE linear polyethylenes density is 0.918~0.935 g/cm3。
A kind of PE heat-shrinkable films production technology, it mainly comprises the following steps：（1）Raw material outbound →
（2）By formula batch mixing →（3）Into main frame →（4）High-temperature mixing →（5）Mould molding →（6）Double air port coolings →（7） Upper traction →（8）Subsidiary engine splitting winding →（9）Semi-finished product →（10）Punching →（11）Rewinding machine →（12）Inspection vanning →（13） Finished product is put in storage.
Preferably, the high-temperature mixing temperature is 170~195 DEG C.
Preferably, after the upper traction, the blow-up ratio of extrusion film is controlled 2.0~3.5.
Preferably, the punching is mainly uniformly punched to semi-finished product, and every square metre of PE heat shrink films are calculated, hole chi Very little distribution proportion is as follows：A length of 1.6667 meters of film, a width of 0.6 meter, a diameter of 0.025 meter of circular hole, the spacing of circular hole is 0.0375 meter, save PE heat shrink films about 10.79%.
The beneficial effects of the invention are as follows：The present invention is used in the invention production and supply that take the lead in of national tobacco business to tobacco company The PE heat shrink films of punching, the characteristics of it can keep big heat shrink films elongation percentage, good tack and transparency high, and with good The physical and mechanical properties such as good tearing strength, fracture tensile strength, elongation at break, impact strength, PE heat shrink films punching is main For the cigarette assembly package of more than 2, effectively save material reduces the usage amount of PE heat shrink films, it is possible to decrease 10.79% bag Dress up this；There is sense directly perceived using punching PE heat shrink films, in the outer commodity that be can see from punching in packaging of packaging, do not influence Products propaganda.
Brief description of the drawings
Fig. 1 is a kind of PE heat-shrinkable films production technological process proposed by the present invention；
Fig. 2 is the front view after PE heat-shrinkable films punching of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing of the invention, the technical scheme in the embodiment of the present invention is clearly and completely described, Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of protection of the invention.
Embodiment 1：
A kind of PE heat-shrinkable films, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 100kg, MLLDPE Metallocene 5kg, HDPE high density polyethylene (HDPE) 20kg, LLDPE linear polyethylene 10kg, Tissuemat E 5kg.
For further optimisation technique scheme, the melt index MI of the LDPE is 0.3~0.5, density is 0.920~ 0.923g/cm3。
For further optimisation technique scheme, the melt index MI of the MLLDPE metallocenes is 0.2~0.3, and density is 0.925~0.960g/cm3。
For further optimisation technique scheme, the melt index MI of the HDPE high density polyethylene (HDPE)s is less than 0.02, close It is 0.950 g/cm to spend3More than.
For further optimisation technique scheme, the LLDPE linear polyethylenes density is 0.918~0.935 g/cm3。
Embodiment 2：
A kind of PE heat-shrinkable films, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 85kg, MLLDPE cyclopentadienyl Metal 4.5kg, HDPE high density polyethylene (HDPE) 16kg, LLDPE linear polyethylene 13kg, Tissuemat E 3kg.
For further optimisation technique scheme, the melt index MI of the LDPE is 0.3~0.5, density is 0.920~ 0.923g/cm3。
For further optimisation technique scheme, the melt index MI of the MLLDPE metallocenes is 0.2~0.3, and density is 0.925~0.960g/cm3。
For further optimisation technique scheme, the melt index MI of the HDPE high density polyethylene (HDPE)s is less than 0.02, close It is 0.950 g/cm to spend3More than.
For further optimisation technique scheme, the LLDPE linear polyethylenes density is 0.918~0.935 g/cm3。
Embodiment 3：
A kind of PE heat-shrinkable films, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 90kg, MLLDPE cyclopentadienyl Metal 6kg, HDPE high density polyethylene (HDPE) 15kg, LLDPE linear polyethylene 11kg, Tissuemat E 4kg.
For further optimisation technique scheme, the melt index MI of the LDPE is 0.3~0.5, density is 0.920~ 0.923g/cm3。
For further optimisation technique scheme, the melt index MI of the MLLDPE metallocenes is 0.2~0.3, and density is 0.925~0.960g/cm3。
For further optimisation technique scheme, the melt index MI of the HDPE high density polyethylene (HDPE)s is less than 0.02, close It is 0.950 g/cm to spend3More than.
For further optimisation technique scheme, the LLDPE linear polyethylenes density is 0.918~0.935 g/cm3。
For further optimisation technique scheme, the interlayer of the filtering lining 1 is the screen pack of nanometer material.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used Modified with to the technical scheme described in foregoing embodiments, or equivalent carried out to which part technical characteristic, All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention Within protection domain.

Claims (9)

1. a kind of PE heat-shrinkable films, its primary raw material composition and quality proportion are：LDPE low density polyethylene (LDPE)s 80~100, MLLDPE metallocenes 4~7, HDPE high density polyethylene (HDPE)s 15~20, LLDPE linear polyethylenes 10~15, Tissuemat E 3~10.
2. a kind of PE heat-shrinkable films according to claim 1, it is characterised in that the melt index MI of the LDPE is 0.3~0.5, density is 0.920~0.923g/cm3。
3. a kind of PE heat-shrinkable films according to claim 1, it is characterised in that the melting of the MLLDPE metallocenes refers to Number MI is 0.2~0.3, and density is 0.925~0.960g/cm3。
4. a kind of PE heat-shrinkable films according to claim 1, it is characterised in that the HDPE high density polyethylene (HDPE)s it is molten It is less than 0.02 to melt index M I, and density is 0.950 g/cm3More than.
5. a kind of PE heat-shrinkable films according to claim 1, it is characterised in that the LLDPE linear polyethylenes density It is 0.918~0.935 g/cm3。
6. a kind of PE heat-shrinkable films production technology, it mainly comprises the following steps：（1）Raw material outbound →
（2）By formula batch mixing →（3）Into main frame →（4）High-temperature mixing →（5）Mould molding →（6）Double air port coolings →（7） Upper traction →（8）Subsidiary engine splitting winding →（9）Semi-finished product →（10）Punching →（11）Rewinding machine →（12）Inspection vanning →（13） Finished product is put in storage.
7. a kind of PE heat-shrinkable films according to claim 6, it is characterised in that the high-temperature mixing temperature is 170~ 195℃。
8. a kind of PE heat-shrinkable films according to claim 6, it is characterised in that after the upper traction, extrusion film Blow-up ratio is controlled 2.0~3.5.
9. a kind of PE heat-shrinkable films according to claim 6, it is characterised in that the punching is mainly carried out to semi-finished product Uniform punching, every square metre of PE heat shrink films are calculated, and pore size distribution ratio is as follows：A length of 1.6667 meters of film, a width of 0.6 Rice, a diameter of 0.025 meter of circular hole, the spacing of circular hole is 0.0375 meter, saves PE heat shrink films about 10.79%.
CN201710037648.XA 2017-01-19 2017-01-19 A kind of PE heat-shrinkable films and its production technology Pending CN106750823A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107400283A (en) * 2017-08-30 2017-11-28 桐城市华猫软膜有限公司 A kind of PE punching heat shrink films and its production technology
CN107501680A (en) * 2017-08-30 2017-12-22 桐城市华猫软膜有限公司 One kind punching PE heat shrink films
CN108773095A (en) * 2018-06-29 2018-11-09 南雄市金叶包装材料有限公司 Cigarette PE heat shrink films production equipments
CN111846327A (en) * 2020-07-22 2020-10-30 山东野迈塑胶有限公司 Full-degradable PE heat shrinkable film
CN112135874A (en) * 2018-04-20 2020-12-25 陶氏环球技术有限责任公司 High temperature tie layer compositions and articles made therefrom
CN113831621A (en) * 2020-06-24 2021-12-24 中国石油化工股份有限公司 Polyolefin composition, preparation method and application thereof
CN116178829A (en) * 2022-12-28 2023-05-30 上海云开塑胶制品有限公司 Unidirectional polyethylene shrink film with stable shrinkage rate and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102173160A (en) * 2010-12-29 2011-09-07 东莞市正新包装制品有限公司 Heavy-duty thermal shrinkage polyethylene film and preparation method thereof
CN103264553A (en) * 2013-04-28 2013-08-28 无锡市方成彩印包装有限公司 Shrink package color film and production method thereof
CN104311949A (en) * 2014-10-11 2015-01-28 中国石油化工股份有限公司 High-strength polyethylene material for preparing heat shrinkable film, and preparation method of high-strength polyethylene material
CN104844916A (en) * 2015-04-29 2015-08-19 安徽松泰包装材料有限公司 Enhanced polyethylene heat shrinkable film
CN106046500A (en) * 2016-07-08 2016-10-26 安徽致达包装有限公司 PE heat shrinkage film packing bag production technology for tobacco cigarettes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102173160A (en) * 2010-12-29 2011-09-07 东莞市正新包装制品有限公司 Heavy-duty thermal shrinkage polyethylene film and preparation method thereof
CN103264553A (en) * 2013-04-28 2013-08-28 无锡市方成彩印包装有限公司 Shrink package color film and production method thereof
CN104311949A (en) * 2014-10-11 2015-01-28 中国石油化工股份有限公司 High-strength polyethylene material for preparing heat shrinkable film, and preparation method of high-strength polyethylene material
CN104844916A (en) * 2015-04-29 2015-08-19 安徽松泰包装材料有限公司 Enhanced polyethylene heat shrinkable film
CN106046500A (en) * 2016-07-08 2016-10-26 安徽致达包装有限公司 PE heat shrinkage film packing bag production technology for tobacco cigarettes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107400283A (en) * 2017-08-30 2017-11-28 桐城市华猫软膜有限公司 A kind of PE punching heat shrink films and its production technology
CN107501680A (en) * 2017-08-30 2017-12-22 桐城市华猫软膜有限公司 One kind punching PE heat shrink films
CN112135874A (en) * 2018-04-20 2020-12-25 陶氏环球技术有限责任公司 High temperature tie layer compositions and articles made therefrom
CN112135874B (en) * 2018-04-20 2023-11-28 陶氏环球技术有限责任公司 High temperature tie layer compositions and articles made therefrom
CN108773095A (en) * 2018-06-29 2018-11-09 南雄市金叶包装材料有限公司 Cigarette PE heat shrink films production equipments
CN113831621A (en) * 2020-06-24 2021-12-24 中国石油化工股份有限公司 Polyolefin composition, preparation method and application thereof
CN111846327A (en) * 2020-07-22 2020-10-30 山东野迈塑胶有限公司 Full-degradable PE heat shrinkable film
CN116178829A (en) * 2022-12-28 2023-05-30 上海云开塑胶制品有限公司 Unidirectional polyethylene shrink film with stable shrinkage rate and preparation method thereof
CN116178829B (en) * 2022-12-28 2024-04-30 上海云开塑胶制品有限公司 Unidirectional polyethylene shrink film with stable shrinkage rate and preparation method thereof

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Application publication date: 20170531