CN107443847A - Food packaging no white casse is without floating object polyethylene film and preparation method thereof - Google Patents

Food packaging no white casse is without floating object polyethylene film and preparation method thereof Download PDF

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Publication number
CN107443847A
CN107443847A CN201710828188.2A CN201710828188A CN107443847A CN 107443847 A CN107443847 A CN 107443847A CN 201710828188 A CN201710828188 A CN 201710828188A CN 107443847 A CN107443847 A CN 107443847A
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CN
China
Prior art keywords
resin
food packaging
polyethylene film
floating object
white casse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710828188.2A
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Chinese (zh)
Inventor
薛鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Blue Rhyme Packaging Co Ltd
Original Assignee
Anhui Blue Rhyme Packaging Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Blue Rhyme Packaging Co Ltd filed Critical Anhui Blue Rhyme Packaging Co Ltd
Priority to CN201710828188.2A priority Critical patent/CN107443847A/en
Publication of CN107443847A publication Critical patent/CN107443847A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/327—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polyolefins obtained by a metallocene or single-site catalyst
    • 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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • 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
    • 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
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
    • 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)
    • 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
    • C08L2207/068—Ultra high molecular weight polyethylene

Abstract

The invention discloses a kind of food packaging no white casse without floating object polyethylene film and preparation method thereof, it is co-extruded by internal layer and outer layer, described internal layer includes 19 29% ldpe resins, 70 80% medium density polyethylene resins, 1% stabilizer EAZ 10；Described outer layer includes 40 60% polyvinyl resin with super-high molecular weight, 30 50% medium density polyethylene resins, 5 10% maleic anhydride grafted polyethylenes.

Description

Food packaging no white casse is without floating object polyethylene film and preparation method thereof
Technical field
The present invention relates to packaging material for food technical field, more particularly to food packaging no white casse to gather without floating object Vinyl film and preparation method thereof.
Background technology
PE inner membrane bags are to be used to inside woven bag use as liner, play a part of moistureproof, damp proof, leakproof to product, It can also be independently operated, directly to contact with content.With expanding economy, food packaging safety has had become now One of focal issue of social concerns, polyethylene is as most important packaging material for food, during it is manufactured usually Some chemical addition agents are added, such as antioxidant, plasticizer, ultra-violet absorber, heat stabilizer, fire retardant, brightening agent, sterilization Agent etc., to improve the performance of plastic product.After the package plastics of food bag of domestic production at present substantially pours into pure water The muddy water for having floating object of milky is reformed into through rocking its water, its main cause is plastics in by high temperature working processes Chemical addition agent in raw material is separated out absorption the body of people is eaten with the food of packaging in the surface of film, these additives It is interior, the health of human body is impacted.
The content of the invention
The defects of the object of the invention is exactly to make up prior art, there is provided a kind of food packaging no white casse is without drift Float polyethylene film and preparation method thereof.
The present invention is achieved by the following technical solutions：
Food packaging no white casse is co-extruded by internal layer and outer layer without floating object polyethylene film, described internal layer bag Include 19-29% ldpe resins, 70-80% medium density polyethylene resins, 1% stabilizer EAZ-10；Described outer layer includes 40-60% polyvinyl resin with super-high molecular weight, 30-50% medium density polyethylene resins, 5-10% maleic anhydride grafted polyethylenes.
Described medium density polyethylene resin includes linear density polyethylene resin and metallocene medium density polyethylene tree Fat, both weight ratios are 1：（0.5-1.5）.
Described the internal layer also environmentally friendly bactericide including 0.01-0.1%, 0.1-1% environment-friendly plasticizers, 0.1-0.5% native annulus The one or more protected in antioxidant, 0.01-0.05% environmental protection slipping agents.
Described outer layer also includes the agent of 0.05-0.1% gas barriers, 1-5% color stuffings or 0.1-1% environment-friendly plasticizers.
The density of the ldpe resin is 0.89-0.92g/cm3, melt index 0.5-1.5g/10min； The density of described medium density polyethylene resin is 0.935-0.945g/cm3, and melt index is 0.8-5g/10min；It is described Polyvinyl resin with super-high molecular weight 0.940-0.964g/cm3, equal viscoelastic element amount be more than 2,000,000.
Described internal layer and the thickness ratio of outer layer are 1:（1-5）.
The preparation method of described polyethylene film, comprises the following steps：Layer resin raw material inside and outside first is put into baking oven 80 DEG C of -85 DEG C of drying, are then mixed homogeneous, warp in the ratio by each layer resin raw material and corresponding annexing ingredient respectively Inside and outside layer resin concentrates are made in double screw extruder heating, shearing, extrusion, pelletizing respectively, in the interior cold exhaust of extrusion blow molding machine Corona impact machine is installed on post, same mouth mold blowing extrusion barrel, blowing extrusion are entered after inside and outside layer raw materials melt is plastified While open corona impact machine to inner membrance carry out shock treatment, the voltage of electric shock is ten thousand volts of 1 Wan Fu -1.5, inner membrance is formed surely Fixed molecular gap network structure, through cooling and shaping, draw, winding, described polyethylene film is made.
The invention provides a kind of polyethylene film for packaging for foodstuff with double-decker, this polythene material Internal layer mixed using low density polyethylene (LDPE) with metallocene medium density polyethylene or linear density polyethylene and be used as resin binder, And add the processing aid such as appropriate stabilizer or environmentally friendly bactericide, environment-friendly plasticizer, obtain with good heat endurance, The environment-protecting and non-poisonous multi-functional internal layer of thermal viscosity, flexibility；Outer layer surpasses 2,000,000 ultra-high molecular weight polyethylene with using molecular weight Density polyethylene mixes, and using maleic anhydride grafted polyethylene as compatilizer, can also be needed to add gas barrier according to use The various functions auxiliary agent such as agent, color stuffing, the outer membrane of acquisition have that highly polished, impact resilience is good, is easy to bonding, is wear-resisting, airtight The advantages that property is good；Ectonexine coextrusion, which obtains polyethylene film and effectively overcomes chemical substance in existing plastic foil, easily analyses The defects of going out, membrane structure is more stable, and feature is stronger, more environmentally friendly and practical.
Embodiment
Food packaging no white casse is co-extruded, described is interior without floating object polyethylene film by internal layer and outer layer Layer includes 19% ldpe resin, 79.9% medium density polyethylene resin, 1% stabilizer EAZ, 0.1% Tea Polyphenols；Described Outer layer includes 50% polyvinyl resin with super-high molecular weight, 44.95% medium density polyethylene resin, 0.05% gas barrier agent, 5% Malaysia Anhydride grafted lldpe.
Wherein medium density polyethylene resin includes linear density polyethylene resin and metallocene medium density polyethylene resin, Both weight ratios are 1：1.
Wherein the density of ldpe resin is 0.91g/cm3, melt index 0.8g/10min；It is close in described The density for spending polyvinyl resin is 0.940g/cm3, and melt index is 1.5g/10min；Described ultra-high molecular weight polyethylene Resin 0.955g/cm3, equal viscoelastic element amount are 3,000,000.
The internal layer of the film and the thickness ratio of outer layer are 1:1.
The preparation method of the embodiment polyethylene film, comprises the following steps：Layer resin raw material inside and outside first is put into baking oven Interior 80 DEG C of drying, it is then respectively that each layer resin raw material and corresponding annexing ingredient is homogeneous in ratio mixing, through double Inside and outside layer resin concentrates are made in screw extruder heating, shearing, extrusion, pelletizing respectively, in the interior cold exhaust post of extrusion blow molding machine Upper installation corona impact machine, same mouth mold blowing extrusion barrel is entered after inside and outside layer raw materials melt is plastified, is blow molded extrusion Corona impact machine being opened simultaneously shock treatment being carried out to inner membrance, the voltage of electric shock is 10,000 volts, inner membrance is formed the intermolecular of stabilization Gap network structure, through cooling and shaping, draw, winding, described polyethylene film is made.

Claims (7)

1. food packaging no white casse is without floating object polyethylene film, it is characterised in that it is co-extruded by internal layer and outer layer, Described internal layer includes 19-29% ldpe resins, 70-80% medium density polyethylene resins, 1% stabilizer EAZ-10；Institute The outer layer stated includes 40-60% polyvinyl resin with super-high molecular weight, 30-50% medium density polyethylene resins, 5-10% maleic anhydrides and connect Branch polyethylene.
2. food packaging no white casse as claimed in claim 1 is without floating object polyethylene film, it is characterised in that described Medium density polyethylene resin include linear density polyethylene resin and metallocene medium density polyethylene resin, both weight Than for 1：（0.5-1.5）.
3. food packaging no white casse as claimed in claim 1 is without floating object polyethylene film, it is characterised in that described Internal layer also including 0.01-0.1% environmentally friendly bactericide, 0.1-1% environment-friendly plasticizers, 0.1-0.5% natural environmental-protectives antioxidant, One or more in 0.01-0.05% environmental protection slipping agents.
4. food packaging no white casse as claimed in claim 1 is without floating object polyethylene film, it is characterised in that described Outer layer also include the agent of 0.05-0.1% gas barriers, 1-5% color stuffings or 0.1-1% environment-friendly plasticizers.
5. food packaging no white casse as claimed in claim 1 is without floating object polyethylene film, it is characterised in that described The density of ldpe resin is 0.89-0.92g/cm3, melt index 0.5-1.5g/10min；Described Midst density The density of polyvinyl resin is 0.935-0.945g/cm3, and melt index is 0.8-5g/10min；Described super high molecular weight Polyvinyl resin 0.940-0.964g/cm3, equal viscoelastic element amount are more than 2,000,000.
6. food packaging no white casse as claimed in claim 1 is without floating object polyethylene film, it is characterised in that described Internal layer and outer layer thickness ratio be 1:（1-5）.
7. a kind of preparation method of polyethylene film as described in claim 1-6 is any, comprises the following steps：It is inside and outside first Layer resin raw material is put into 80 DEG C of -85 DEG C of drying in baking oven, and each layer resin raw material then is pressed into institute with corresponding annexing ingredient respectively State ratio and mix homogeneous, heat, shear through double screw extruder, extruding, inside and outside layer resin concentrates are made in pelletizing respectively, Corona impact machine is installed on the interior cold exhaust post of extrusion blow molding machine, enters same mouth after inside and outside layer raw materials melt is plastified Mould is blow molded extrusion barrel, corona impact machine is opened while blowing is extruded shock treatment is carried out to inner membrance, the voltage of electric shock is 10,000 - 1.5 ten thousand volts of volt, inner membrance is formed the molecular gap network structure of stabilization, through cooling and shaping, draw, winding, be made described and gather Vinyl film.
CN201710828188.2A 2017-09-14 2017-09-14 Food packaging no white casse is without floating object polyethylene film and preparation method thereof Pending CN107443847A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710828188.2A CN107443847A (en) 2017-09-14 2017-09-14 Food packaging no white casse is without floating object polyethylene film and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710828188.2A CN107443847A (en) 2017-09-14 2017-09-14 Food packaging no white casse is without floating object polyethylene film and preparation method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108384093A (en) * 2018-02-26 2018-08-10 淄博华致林包装制品有限公司 Medicinal freeze-drying aseptic polyethylene film and preparation method thereof
CN114311904A (en) * 2021-12-17 2022-04-12 佛山市南海区长晟塑料包装有限公司 Double-layer PE composite hose sheet and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003267471A (en) * 2002-03-15 2003-09-25 Nipro Corp Protecting external packaging bag for container for freezing and storing living tissue
CN1616315A (en) * 2004-11-23 2005-05-18 上海大智企业(集团)有限公司 Special film for container buffer air bag
CN1616314A (en) * 2004-11-23 2005-05-18 上海大智企业(集团)有限公司 Cloth packaging film
KR20120009617A (en) * 2010-07-19 2012-02-02 주식회사 알앤에프케미칼 Lcd protection film comprising permanent antistatic agent
CN104476889A (en) * 2015-01-16 2015-04-01 永新股份（黄山）包装有限公司 PE film and preparation method thereof
CN106218159A (en) * 2016-07-19 2016-12-14 杭州德雅包装有限公司 A kind of heat shrink films and utilize the packaging material that this heat shrink films makes
CN106626636A (en) * 2016-12-01 2017-05-10 成泰昌包装制品(深圳)有限公司 High-strength packaging film

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003267471A (en) * 2002-03-15 2003-09-25 Nipro Corp Protecting external packaging bag for container for freezing and storing living tissue
CN1616315A (en) * 2004-11-23 2005-05-18 上海大智企业(集团)有限公司 Special film for container buffer air bag
CN1616314A (en) * 2004-11-23 2005-05-18 上海大智企业(集团)有限公司 Cloth packaging film
KR20120009617A (en) * 2010-07-19 2012-02-02 주식회사 알앤에프케미칼 Lcd protection film comprising permanent antistatic agent
CN104476889A (en) * 2015-01-16 2015-04-01 永新股份（黄山）包装有限公司 PE film and preparation method thereof
CN106218159A (en) * 2016-07-19 2016-12-14 杭州德雅包装有限公司 A kind of heat shrink films and utilize the packaging material that this heat shrink films makes
CN106626636A (en) * 2016-12-01 2017-05-10 成泰昌包装制品(深圳)有限公司 High-strength packaging film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108384093A (en) * 2018-02-26 2018-08-10 淄博华致林包装制品有限公司 Medicinal freeze-drying aseptic polyethylene film and preparation method thereof
CN108384093B (en) * 2018-02-26 2023-04-25 山东华致林医药科技有限公司 Medicinal freeze-dried sterile polyethylene film and preparation method thereof
CN114311904A (en) * 2021-12-17 2022-04-12 佛山市南海区长晟塑料包装有限公司 Double-layer PE composite hose sheet and preparation method thereof

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Application publication date: 20171208