CN102501501A - BOPP isolation film - Google Patents

BOPP isolation film Download PDF

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Publication number
CN102501501A
CN102501501A CN2011103038806A CN201110303880A CN102501501A CN 102501501 A CN102501501 A CN 102501501A CN 2011103038806 A CN2011103038806 A CN 2011103038806A CN 201110303880 A CN201110303880 A CN 201110303880A CN 102501501 A CN102501501 A CN 102501501A
Authority
CN
China
Prior art keywords
polypropylene
bopp
film
vinyl alcohol
sandwich layer
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
CN2011103038806A
Other languages
Chinese (zh)
Inventor
姚瑱
严剑峰
陈滨
张瑾瑾
王敬华
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.)
SHANGHAI JINPU PLASTIC PACKING MATERIALS CO Ltd
Original Assignee
SHANGHAI JINPU PLASTIC PACKING MATERIALS 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 SHANGHAI JINPU PLASTIC PACKING MATERIALS CO Ltd filed Critical SHANGHAI JINPU PLASTIC PACKING MATERIALS CO Ltd
Priority to CN2011103038806A priority Critical patent/CN102501501A/en
Publication of CN102501501A publication Critical patent/CN102501501A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing

Abstract

The invention belongs to the field of new materials, and particularly relates to a BOPP isolation film and a preparation method thereof; the invention is characterized in that the isolation film comprises three layers which are respectively an upper surface layer, a core layer and a lower surface layer, wherein the upper surface layer comprises polypropylene; the core layer comprises an ethane-vinyl alcohol copolymer, nanometer silica, and polypropylene grafted maleic anhydride; the lower surface layer comprises polypropylene and an antiadhesion agent; materials of the three layers are extruded and cast through a three-layer mold head according to the formula content; the extrusion temperature is 210-250 DEG C; then longitudinal stretching and horizontal stretching and traction are performed to form a film; the film is treated by corona to form a mother coil; the mother coil is treated by aging treatment to obtain the BOPP isolation film finished product. The invention fully combines excellent electric insulation and chemical stability of polypropylene and good isolation performance to gas of ethane-vinyl alcohol copolymer; and the prepared BOPP isolation film has good isolation performance to water, gas and the like.

Description

A kind of BOPP barrier film
Technical field
The invention belongs to field of new, be specifically related to a kind of BOPP barrier film and preparation method thereof.
Background technology
The raising of Along with people's material and cultural life, people have higher requirement to the fresh-keeping and nutritive value of food.In order to satisfy people's requirement, the circulation of all over the world food increases, to store, the time requirement of shelf-life also improved.Therefore, food fresh keeping and the commodity technology of guaranteeing the quality develop rapidly, fresh-keeping, the new technologies of guaranteeing the quality such as vacuum packaging, Deoxygen Packaging, ventilation packing occurred, and purpose is in order to control the harm to food of oxygen and microorganism.
Usually, packaging material for food can be divided into rigid package material and flexible packing material, and plastic sheeting belongs to flexible packing material.It can be divided into two types again: the first kind is monomer film (like PE, PP etc.), and they are transparent, nontoxic, and easily processing has certain moisture-proof function, but do not have air-tightness, therefore, and good preserve foods; Second type of composite membrane that forms for multilayer monomer film-stack (like PP/PE, NYION/PE, PET/PE; BOPP/ aluminium case/PE etc.); Wherein the BOPP/PE gas barrier properties is poor, is mainly used in the damp-prrof packing of dry food, and NY-LON/PE and PET/PE valency height and NY-LON film will lean on import; Its moisture resistance is mainly used in the anti-oxidation rotten packing of fatty foods such as sausage, jerky not as BOPP/PE; BOPP/ aluminium foil/PE excellent combination property, but the aluminium foil valency is high, and mainly lean on import.
Summary of the invention
The objective of the invention is to solve the defective that exists in the existing packaging material for food, a kind of BOPP barrier film and preparation method thereof is provided.
For realizing above-mentioned purpose, the present invention takes following technical scheme:
A kind of BOPP barrier film; It is characterized in that: it is formed by 3 layers; Be respectively upper epidermis, sandwich layer and following top layer; Wherein upper epidermis is made up of polypropylene, and sandwich layer is made up of ethylene-vinyl alcohol copolymer, nano silicon and polypropylene grafted maleic anhydride, and following top layer is made up of polypropylene and anti-blocking agent.
Said upper epidermis material is made up of polypropylene;
Polypropylene is an isotactic polypropylene in the said upper epidermis, and density is 0.89～0.91g/cm3, and its molecular structure is regular, degree of crystallinity is high, thereby has excellent mechanical property, good heat resistance, and 164～170 ℃ of fusing points, ability is high temperature more than 100 ℃;
The material of said sandwich layer and each constituent content (weight portion) are 100 parts of ethylene-vinyl alcohol copolymers, 2～5 parts of nano silicons, 40～50 parts of polypropylene grafted maleic anhydrides;
Ethylene-vinyl alcohol copolymer in the said sandwich layer, vinyl alcohol content are 60～75%, and melt index is 3g/10min;
Nano silicon is for through silane coupler modified nano silicon in the said sandwich layer, and wherein silane coupler is a kind of among KH550, KH560 and the KH570;
Polypropylene grafted maleic anhydride is the compatilizer of system in the said sandwich layer, improves the compatibility of polypropylene and ethylene-vinyl alcohol copolymer;
The material on said top layer down is by polypropylene and SiO 2Form, wherein polypropylene is 100 parts, SiO 2It is 1～3 part;
Anti-blocking agent is a silica in the said top layer down;
Said BOPP barrier film, wherein upper epidermis material: core material: following skin-material mass ratio is 3: 2: 3.
Said BOPP barrier film preparation method is: trilaminate material according to formulation content, is added three extruders respectively, wherein a main extruder; Two auxilliary extruders, through extruding the casting sheet behind three layers of die head, extrusion temperature is 210～250 ℃; Carry out then becoming film after longitudinal stretching and cross directional stretch and the traction; Film becomes parent roll through corona treatment, and parent roll obtains BOPP barrier film finished product through Ageing Treatment.
Beneficial effect of the present invention:
The present invention has fully combined polypropylene excellent electrical insulating property, chemical stability, and ethylene-vinyl alcohol copolymer is to the gas good barrier performance, and the BOPP barrier film of preparing all has good barrier performance to water, gas etc.; Simultaneously, add silane-modified nano silicon, improved the influence that the ethylene-vinyl alcohol copolymer performance is subject to steam.
The specific embodiment
Embodiment 1
A kind of BOPP barrier film; Form by 3 layers; Be respectively upper epidermis, sandwich layer and following top layer; Wherein upper epidermis is made up of polypropylene, and sandwich layer is that 100 parts of 60% ethylene-vinyl alcohol copolymers, 3 parts of KH550 modified manometer silicon dioxides and polypropylene grafted maleic anhydride are formed for 40 parts by vinyl alcohol content, and following top layer is by 100 parts of polypropylene and SiO 22 parts of compositions.
Get the upper epidermis material: core material: following skin-material mass ratio is 3: 2: 3, adds three extruders respectively, wherein a main extruder; Two auxilliary extruders, through extruding the casting sheet behind three layers of die head, extrusion temperature is 220 ℃; Carry out then becoming film after longitudinal stretching and cross directional stretch and the traction; Film becomes parent roll through corona treatment, and parent roll obtains BOPP barrier film finished product through Ageing Treatment.
Embodiment 2
A kind of BOPP barrier film; Form by 3 layers; Be respectively upper epidermis, sandwich layer and following top layer; Wherein upper epidermis is made up of polypropylene, and sandwich layer is that 100 parts of 70% ethylene-vinyl alcohol copolymers, 4 parts of KH550 modified manometer silicon dioxides and polypropylene grafted maleic anhydride are formed for 45 parts by vinyl alcohol content, and following top layer is by 100 parts of polypropylene and SiO 23 parts of compositions.
Get the upper epidermis material: core material: following skin-material mass ratio is 3: 2: 3, adds three extruders respectively, wherein a main extruder; Two auxilliary extruders, through extruding the casting sheet behind three layers of die head, extrusion temperature is 250 ℃; Carry out then becoming film after longitudinal stretching and cross directional stretch and the traction; Film becomes parent roll through corona treatment, and parent roll obtains BOPP barrier film finished product through Ageing Treatment.
Embodiment 3
A kind of BOPP barrier film; Form by 3 layers; Be respectively upper epidermis, sandwich layer and following top layer; Wherein upper epidermis is made up of polypropylene, and sandwich layer is that 100 parts of 75% ethylene-vinyl alcohol copolymers, 5 parts of KH550 modified manometer silicon dioxides and polypropylene grafted maleic anhydride are formed for 50 parts by vinyl alcohol content, and following top layer is by 100 parts of polypropylene and SiO 23 parts of compositions.
Get the upper epidermis material: core material: following skin-material mass ratio is 3: 2: 3, adds three extruders respectively, wherein a main extruder; Two auxilliary extruders, through extruding the casting sheet behind three layers of die head, extrusion temperature is 230 ℃; Carry out then becoming film after longitudinal stretching and cross directional stretch and the traction; Film becomes parent roll through corona treatment, and parent roll obtains BOPP barrier film finished product through Ageing Treatment.
The foregoing description is carried out Performance Detection, and concrete data are as shown in the table:
Figure BSA00000587790200031
Can find out that from above-mentioned data BOPP barrier film of the present invention possesses good gas-barrier properties ability and block-water performance, and good mechanical property.

Claims (2)

1. BOPP barrier film; It is characterized in that: it is formed by 3 layers; Be respectively upper epidermis, sandwich layer and following top layer; Wherein upper epidermis is made up of polypropylene, and sandwich layer is made up of ethylene-vinyl alcohol copolymer, nano silicon and polypropylene grafted maleic anhydride, and following top layer is made up of polypropylene and anti-blocking agent;
Polypropylene is an isotactic polypropylene in the said upper epidermis, and density is 0.89～0.91g/cm3, and its molecular structure is regular, degree of crystallinity is high, thereby has excellent mechanical property, good heat resistance, and 164～170 ℃ of fusing points, ability is high temperature more than 100 ℃;
Ethylene-vinyl alcohol copolymer in the said sandwich layer, vinyl alcohol content are 60～75%, and melt index is 3g/10min;
Nano silicon is for through silane coupler modified nano silicon in the said sandwich layer, and wherein silane coupler is a kind of among KH550, KH560 and the KH570.
2. one kind is removed said BOPP barrier film by claim, and its preparation method is: trilaminate material according to formulation content, is added three extruders respectively; Main extruder wherein, two auxilliary extruders are through extruding the casting sheet behind three layers of die head; Extrusion temperature is 210～250 ℃, carries out then becoming film after longitudinal stretching and cross directional stretch and the traction, and film becomes parent roll through corona treatment; Parent roll obtains BOPP barrier film finished product through Ageing Treatment.
CN2011103038806A 2011-10-10 2011-10-10 BOPP isolation film Pending CN102501501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011103038806A CN102501501A (en) 2011-10-10 2011-10-10 BOPP isolation film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011103038806A CN102501501A (en) 2011-10-10 2011-10-10 BOPP isolation film

Publications (1)

Publication Number Publication Date
CN102501501A true CN102501501A (en) 2012-06-20

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Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN102501501A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508074A (en) * 2012-06-26 2014-01-15 层层包装事业股份有限公司 Food packing materials
CN104015328A (en) * 2014-05-27 2014-09-03 浙江金瑞薄膜材料有限公司 Polyolefin high barrier film processing technology
WO2015039203A1 (en) * 2013-09-20 2015-03-26 Embalagens Flexíveis Diadema S.A. Method for producing a flexible laminated structure, resulting flexible laminated structure, uniaxially stretched polyethylene film and package formed by the flexible laminated structure
CN109070568A (en) * 2016-03-28 2018-12-21 东洋纺株式会社 Biaxial stretch-formed laminated polypropylene film
CN109206651A (en) * 2018-07-10 2019-01-15 上海大汇塑业有限公司 Medicinal powder is packed for cast polypropylene film
CN110920192A (en) * 2019-11-15 2020-03-27 安徽国风塑业股份有限公司 Metalized double-sided corona BOPP extinction heat-sealing film and preparation method thereof
CN115847978A (en) * 2022-12-28 2023-03-28 浙江凯利新材料股份有限公司 Water-blocking oxygen-blocking BOPP film capable of being subjected to microwave and preparation method thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4561920A (en) * 1984-02-08 1985-12-31 Norchem, Inc. Formerly Northern Petrochemical Company Biaxially oriented oxygen and moisture barrier film
CN1733397A (en) * 2004-07-09 2006-02-15 朱春蕾 Biaxial tension co-extrusion high-obstruct base material membrane and process for preparing the same
CN101717553A (en) * 2009-12-07 2010-06-02 湖南工业大学 High-barrier composite material and preparation process thereof
US20110236708A1 (en) * 2008-09-23 2011-09-29 Borealis Ag Polyolefin Construction

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US4561920A (en) * 1984-02-08 1985-12-31 Norchem, Inc. Formerly Northern Petrochemical Company Biaxially oriented oxygen and moisture barrier film
CN1733397A (en) * 2004-07-09 2006-02-15 朱春蕾 Biaxial tension co-extrusion high-obstruct base material membrane and process for preparing the same
US20110236708A1 (en) * 2008-09-23 2011-09-29 Borealis Ag Polyolefin Construction
CN101717553A (en) * 2009-12-07 2010-06-02 湖南工业大学 High-barrier composite material and preparation process thereof

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Title
洪定一: "《聚丙烯——原理、工艺与技术》", 30 September 2002, 中国石化出版社 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508074A (en) * 2012-06-26 2014-01-15 层层包装事业股份有限公司 Food packing materials
CN103508074B (en) * 2012-06-26 2016-03-16 层层包装事业股份有限公司 Packaging for foodstuff material
WO2015039203A1 (en) * 2013-09-20 2015-03-26 Embalagens Flexíveis Diadema S.A. Method for producing a flexible laminated structure, resulting flexible laminated structure, uniaxially stretched polyethylene film and package formed by the flexible laminated structure
CN104015328A (en) * 2014-05-27 2014-09-03 浙江金瑞薄膜材料有限公司 Polyolefin high barrier film processing technology
CN109070568A (en) * 2016-03-28 2018-12-21 东洋纺株式会社 Biaxial stretch-formed laminated polypropylene film
CN109070568B (en) * 2016-03-28 2021-08-27 东洋纺株式会社 Biaxially stretched laminated polypropylene film
CN109206651A (en) * 2018-07-10 2019-01-15 上海大汇塑业有限公司 Medicinal powder is packed for cast polypropylene film
CN109206651B (en) * 2018-07-10 2021-06-18 上海大汇塑业有限公司 Cast polypropylene film for packaging medicinal powder
CN110920192A (en) * 2019-11-15 2020-03-27 安徽国风塑业股份有限公司 Metalized double-sided corona BOPP extinction heat-sealing film and preparation method thereof
CN115847978A (en) * 2022-12-28 2023-03-28 浙江凯利新材料股份有限公司 Water-blocking oxygen-blocking BOPP film capable of being subjected to microwave and preparation method thereof
CN115847978B (en) * 2022-12-28 2023-09-22 浙江凯利新材料股份有限公司 Microwave water-blocking oxygen-blocking BOPP film and preparation method thereof

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Application publication date: 20120620