CN102423942B - A kind of food package plastic base material film and production technology thereof - Google Patents

A kind of food package plastic base material film and production technology thereof Download PDF

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Publication number
CN102423942B
CN102423942B CN201110220639.7A CN201110220639A CN102423942B CN 102423942 B CN102423942 B CN 102423942B CN 201110220639 A CN201110220639 A CN 201110220639A CN 102423942 B CN102423942 B CN 102423942B
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China
Prior art keywords
lldpe
low density
density polyethylene
base material
plastic base
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Expired - Fee Related
Application number
CN201110220639.7A
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Chinese (zh)
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CN102423942A (en
Inventor
梁继鹏
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Dalian Ruixianda Plastic Co., Ltd.
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Dalian Ruixianda Plastic Co Ltd
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Priority to CN201110220639.7A priority Critical patent/CN102423942B/en
Publication of CN102423942A publication Critical patent/CN102423942A/en
Application granted granted Critical
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Expired - Fee Related 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
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C2948/9258—Velocity
    • B29C2948/9259—Angular velocity
    • 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
    • B29C2948/92885—Screw or gear
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

The present invention relates to a kind of food package plastic base material film, comprise internal layer, intermediate layer and outer three-decker; Described internal layer adopts low density polyethylene and metallocene linear-low density polyethylene mLLDPE to make, described intermediate layer adopts low density polyethylene and LLDPE LLDPE to make, and described skin adopts low density polyethylene and LLDPE LLDPE.Its production technology comprises the steps such as mixed feeding is extruded, blown film, sizing, traction cutting.The food package plastic base material film of the present invention's design and production technology thereof, there is provided that a kind of high barrier, high-air-tightness, resistance tocrocking, heat seal strength are high, heat sealability good, there are certain resistance to pressure and resistance to impact, meet the packaging for foodstuff Bag Material base film of food security certification.

Description

A kind of food package plastic base material film and production technology thereof
Technical field
The invention belongs to plastics chemical industry, particularly relate to a kind of food package plastic base material film and production technology thereof.Background technology
Current food packaging industry says that the packaging base material film quantity needed is large, kind is many, and the film adopting single raw material to produce is difficult to the packing instructions adapting to Special food.Trace it to its cause, although producer's production technology of mainly respectively producing plastic raw materials is each has something to recommend him, often kind of raw material has its weak point, so the film produced is difficult to the demand meeting various situation.Although also there are the way adopting different material used in combination in some companies, owing to lacking necessary testing equipment and the testing program of checkout equipment and system, its effect is unsatisfactory.
Requirement for packaging for foodstuff is especially harsh, requires that plastic substrate film must possess high barrier, high-air-tightness, resistance tocrocking, heat seal strength is high, heat sealability good, has certain resistance to pressure and resistance to impact, meets food security certification.Be applicable to packaging for foodstuff and use the useful LLDPE LLDPE of polyethylene raw material, hp-ldpe LDPE and metallocene linear polyethylene mLLDPE.But, simply the plastic sheeting that one or more polyethylene raw material mixing after-blow is made can not be met the needs of extra package, also need the analysis carrying out quantitative and qualitative analysis according to the density of various polyethylene raw material, melt index, vicat softening point temperature, biaxial tension rate and hot strength, the careful proportioning of system is done according to designing requirement, be aided with necessary processing aid again, finally make plastic sheeting that blowing goes out within the specific limits, meet the requirement of extra package.But, the barrier of polyethylene film to gases such as oxygen of individual layer is poor, during packaging sauce class class, sealing part is easily caused to pollute, the sealing property that general flexible package punch polyethylene film is packed this type of is poor, the requirement of its technology of the package and connection with wrapping of piece storage period can not be met, therefore must adopt barrier property and be mingled with all good multilaminar polyethylene modified film of sealing property or laminated film.
Summary of the invention
The present invention devises a kind of food package plastic base material film and production technology thereof, its object is to provide that a kind of high barrier, high-air-tightness, resistance tocrocking, heat seal strength are high, heat sealability good, there are certain resistance to pressure and resistance to impact, meet the packaging for foodstuff Bag Material base film of food security certification.
In order to solve the technical problem of above-mentioned existence, present invention employs following scheme:
Food package plastic base material film, is characterized in that: comprise internal layer, intermediate layer and outer three-decker; Described internal layer adopts low density polyethylene and metallocene linear-low density polyethylene mLLDPE to make, described intermediate layer adopts low density polyethylene and LLDPE LLDPE to make, and described skin adopts low density polyethylene and LLDPE LLDPE.
Described internal layer adopts melt index to be 1.8-2.2g/10min, and density is 0.923-0.926g/cm 2low density polyethylene, melt index be 1.9-2.4g/10min, density is 0.910-0.915g/cm 2metallocene linear-low density polyethylene mLLDPE, its quality proportioning is LDPE:mLLDPE=25-35:65-75;
Described intermediate layer adopts melt index to be 1.8-2.2g/10min, and density is 0.923-0.926g/cm 2low density polyethylene and melt index be 1.9-2.2g/10min, density is 0.918-0.922g/cm 2lLDPE LLDPE, its quality proportioning is LDPE:LLDPE=35-45:55-65;
Described skin adopts melt index to be 0.8-2.1g/10min, and density is 0.923-0.926g/cm 2low density polyethylene and melt index be 1.9-2.2g/10min, density is 0.918-0.922g/cm 2lLDPE LLDPE, its quality proportioning is LDPE:LLDPE=35-45:55-65.
Described internal layer, mass ratio between intermediate layer and skin are 1:1:1.
A preparation technology for food package plastic base material film, is characterized in that comprising the following steps:
Send extruder to extrude after being mixed in proportion by each raw material, wherein the melt temperature of extruder is 175 DEG C-195 DEG C, and the initial temperature of charging is 175 DEG C-185 DEG C; The roller bar rotating speed of main frame is 80r/min-120r/min; Then blown film is carried out; Finally shape, draw cutting.
The incorporation time of described raw material is 15min-20min.
The temperature of described film head raises from bottom to top gradually, and its temperature range is 165 DEG C-205 DEG C.
The thickness of described film is not more than 0.0035mm.
This food package plastic base material film and production technology thereof have following beneficial effect:
(1) food package plastic base material film barrier of the present invention and air-tightness good, the resistance tocrocking had, resistance to pressure and resistance to impact, have the feature that heat seal strength is high, heat sealability is good simultaneously, meet state food safety certification.
(2) food package plastic base material film production technology of the present invention, improves the inherent quality of product, improves appearance, reduce labour intensity simultaneously, improve production efficiency.
(3) food package plastic base material film production technology of the present invention, reasonable in design, and flow process is simple, is easy to realize.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be further described:
The following example is intended to the preferred embodiment that test is described, in these embodiments, except as otherwise noted, described percentage is by weight.
Following testing equipment adopts: blowing main frame: three-layer co-extruded traction rotates blown film unit, is made up of three extruders, die head, sizing cage, a set of traction subsidiary engine, a winder etc.
Checkout equipment: GBL-L electronic tension tester and MXD-01 friction coefficient instrument.
embodiment 1
By the ratio of raw material in internal layer low density polyethylene 25%, metallocene linear polyethylene mLLDPE75%; Intermediate layer is in the ratio of low density polyethylene 40%, LLDPE LLDPE60%; The outer proportions raw materials for production pressing low density polyethylene 40%, LLDPE LLDPE60%; Mixing 15min, setting melt temperature is 185 DEG C-195 DEG C, and the roller bar rotating speed of main frame is 120r/min film head temperature 175 DEG C-200 DEG C, sizing, traction cutting.The sealed polyethylene plastic performance produced is as follows: hot strength is 22.78Mpa, elongation at break is 718.5%, heat seal strength is 9.8, coefficient of friction: 0.213.
embodiment 2
By the ratio of raw material in internal layer low density polyethylene 30%, metallocene linear polyethylene mLLDPE70%; Intermediate layer is in the ratio of low density polyethylene 50%, LLDPE LLDPE50%; The outer proportions raw materials for production pressing low density polyethylene 45%, LLDPE LLDPE55%; Mixing 18min, setting melt temperature is 185 DEG C-195 DEG C, and the roller bar rotating speed of main frame is 100r/min film head temperature 175 DEG C-200 DEG C, sizing, traction cutting.The sealed polyethylene plastic performance produced is as follows: hot strength is 22.78Mpa, elongation at break is 718.5%, heat seal strength is 9.8, coefficient of friction: 0.213.
embodiment 3
By the ratio of raw material in internal layer low density polyethylene 35%, metallocene linear polyethylene mLLDPE65%; Intermediate layer is in the ratio of low density polyethylene 40%, LLDPE LLDPE60%; The outer proportions raw materials for production pressing low density polyethylene 45%, LLDPE LLDPE55%; Mixing 20min, setting melt temperature is 185 DEG C-195 DEG C, and the roller bar rotating speed of main frame is 120r/min film head temperature 175 DEG C-205 DEG C, sizing, traction cutting.The sealed polyethylene plastic performance produced is as follows: hot strength is 22.78Mpa, elongation at break is 718.5%, heat seal strength is 9.8, coefficient of friction: 0.213.
Above in conjunction with specific embodiments to invention has been exemplary description; obvious realization of the present invention is not subject to the restrictions described above; as long as have employed the various improvement that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all in protection scope of the present invention without to improve.

Claims (4)

1. food package plastic base material film, is characterized in that: comprise internal layer, intermediate layer and outer three-decker; Described internal layer adopts low density polyethylene and metallocene linear-low density polyethylene mLLDPE to make, described intermediate layer adopts low density polyethylene and LLDPE LLDPE to make, described skin adopts low density polyethylene and LLDPE LLDPE, processing step is as follows: send extruder to extrude after being mixed in proportion by each raw material, wherein the melt temperature of extruder is 175 DEG C-195 DEG C, and the initial temperature of charging is 175 DEG C-185 DEG C; The roller bar rotating speed of main frame is 80r/min-120r/min; Then blown film is carried out; Finally shape, draw cutting;
Described internal layer adopts melt index to be 1.8-2.2g/10min, and density is 0.923-0.926g/cm 2low density polyethylene, melt index be 1.9-2.4g/10min, density is 0.910-0.915g/cm 2metallocene linear-low density polyethylene mLLDPE, its quality proportioning is LDPE:mLLDPE=25-35:65-75;
Described intermediate layer adopts melt index to be 1.8-2.2g/10min, and density is 0.923-0.926g/cm 2low density polyethylene and melt index be 1.9-2.2g/10min, density is 0.918-0.922g/cm 2lLDPE LLDPE, its quality proportioning is LDPE:LLDPE=35-45:55-65;
Described skin adopts melt index to be 0.8-2.1g/10min, and density is 0.923-0.926g/cm 2low density polyethylene and melt index be 1.9-2.2g/10min, density is 0.918-0.922g/cm 2lLDPE LLDPE, its quality proportioning is LDPE:LLDPE=35-45:55-65.
2. food package plastic base material film according to claim 1, is characterized in that: described internal layer, mass ratio between intermediate layer and skin are 1:1:1.
3. food package plastic base material film according to claim 1, is characterized in that: the incorporation time of described raw material is 15min-20min.
4. food package plastic base material film according to claim 1 or 3, is characterized in that: the temperature of die head raises from bottom to top gradually, and its temperature range is 165 DEG C-205 DEG C.
CN201110220639.7A 2011-08-03 2011-08-03 A kind of food package plastic base material film and production technology thereof Expired - Fee Related CN102423942B (en)

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CN201110220639.7A CN102423942B (en) 2011-08-03 2011-08-03 A kind of food package plastic base material film and production technology thereof

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CN102423942B true CN102423942B (en) 2016-03-23

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102909925A (en) * 2012-10-31 2013-02-06 安徽省科汇恒达包装材料科技有限公司 Multilayer frozen polyethylene film
CN102991074A (en) * 2012-12-28 2013-03-27 昆山金盟塑料薄膜有限公司 Thin film and production method thereof
CN104385732A (en) * 2014-11-21 2015-03-04 江门市蓬江区华龙包装材料有限公司 Easy-torn film and using method thereof
CN105667035B (en) * 2016-01-18 2018-01-09 广东星格新材料有限公司 One kind easily takes off packaging film and its production technology
CN105538856B (en) * 2016-01-18 2018-01-09 广东星格新材料有限公司 One kind extruding infiltration packaging film and its production technology
CN108995995A (en) * 2018-07-07 2018-12-14 青岛金利塑料有限公司 A kind of high-air-tightness hydraulic pressure resistant polybag and preparation method thereof
CN109435393A (en) * 2018-12-28 2019-03-08 大连大富塑料彩印有限公司 A kind of high impact properties composite membrane
CN109605890B (en) * 2019-01-21 2020-10-13 河南省银丰塑料有限公司 Three-layer co-extrusion ultralow-temperature heat-sealing packaging film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110549A (en) * 1997-04-30 2000-08-29 Mitsui Chemicals Inc. Sealant resin composition for use in retort film and sealant film
CN101367283A (en) * 2008-07-22 2009-02-18 黄山永新股份有限公司 Antimicrobial polyethylene film and preparing technique thereof
CN101480861A (en) * 2009-01-23 2009-07-15 石狮市新光塑料包装有限公司 Novel PE film
CN101624112A (en) * 2009-08-14 2010-01-13 黄山永新股份有限公司 Composite membrane for sauce and preparation method thereof
EP1907208B1 (en) * 2005-07-19 2011-01-26 E.I. Du Pont De Nemours And Company Film structures having improved oxygen transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6110549A (en) * 1997-04-30 2000-08-29 Mitsui Chemicals Inc. Sealant resin composition for use in retort film and sealant film
EP1907208B1 (en) * 2005-07-19 2011-01-26 E.I. Du Pont De Nemours And Company Film structures having improved oxygen transmission
CN101367283A (en) * 2008-07-22 2009-02-18 黄山永新股份有限公司 Antimicrobial polyethylene film and preparing technique thereof
CN101480861A (en) * 2009-01-23 2009-07-15 石狮市新光塑料包装有限公司 Novel PE film
CN101624112A (en) * 2009-08-14 2010-01-13 黄山永新股份有限公司 Composite membrane for sauce and preparation method thereof

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