CN105774167A - Ultralow-temperature heat sealing casting polypropylene film and application thereof - Google Patents

Ultralow-temperature heat sealing casting polypropylene film and application thereof Download PDF

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Publication number
CN105774167A
CN105774167A CN201610130805.7A CN201610130805A CN105774167A CN 105774167 A CN105774167 A CN 105774167A CN 201610130805 A CN201610130805 A CN 201610130805A CN 105774167 A CN105774167 A CN 105774167A
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China
Prior art keywords
layer
polypropylene film
cast polypropylene
heat sealing
film
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Pending
Application number
CN201610130805.7A
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Chinese (zh)
Inventor
黄飞刚
冯叶飞
高新
周建萍
寿祖康
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.)
ZHEJIANG GREAT SOUTHEAST Co Ltd
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ZHEJIANG GREAT SOUTHEAST Co Ltd
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Priority to CN201610130805.7A priority Critical patent/CN105774167A/en
Publication of CN105774167A publication Critical patent/CN105774167A/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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • 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
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

The invention discloses an ultralow-temperature heat sealing casting polypropylene film and application thereof.The casting polypropylene film is of a three-layer structure, namely, a heat sealing layer, a core layer and a corona layer.The heat sealing layer is prepared from 10% to 20% of metallocene ethylene-hexylene copolymers, 5% to 20% of polyolefin elastomers, 1% to 3% of antisticking agent and the balance ternary co-polypropylene.The core layer is prepared from 70% to 90% of homo-polypropylene and 10% to 30% of metallocene ethylene-hexylene copolymers.The corona layer is prepared from 1% to 3% of antisticking agent and the balance ternary co-polypropylene.The casting polypropylene film is prepared through a three-layer co-extruding production process, the raw materials, namely, the metallocene ethylene-hexylene copolymers, the polyolefin elastomers, the antisticking agent and ternary co-polypropylene of the heat sealing layer are subjected to blending pelleting modification before entering an extruder, and the four raw materials are pelleted into one kind of raw material particles after being fused.The casting polypropylene film has ultralow-temperature heat sealing and good toughness and impact resistance, thereby being suitable for gas packing.

Description

A kind of ultra-low temperature heat sealing cast polypropylene film and application thereof
Technical field
The present invention relates to cast polypropylene film and application thereof, particularly ultra-low temperature heat sealing cast polypropylene film and Application in gas flush packaging.
Background technology
At present, cast polypropylene film relies on its excellent characteristic: high transparent, high resistant are moist, excellent Heat resistance, low temperature heat seal etc., be widely applied in a lot of fields.Such as utilize its low temperature heat seal Feature, can be individually or with other kinds of Film laminated is processed into various packaging；Utilize it excellent heat-resisting Property, can be used to pack the product needing thermophilic digestion to sterilize, such as meat, juice, agricultural product and medical supplies etc.. The appearance of these products meet people growing to instant food or the demand of articles for use, also can protect simultaneously The freshness of card goods, it may be said that be the optimal packaging material of " foods packed in carton containers ".
Existing cast polypropylene film produces the common raw material of general employing and technique, and the film produced exists Toughness, impact resistance and ultra-low temperature heat sealing aspect are still weak.And the film purpose of gas flush packaging be in order to Prevent food or article to be deformed or food spoilage, corona layer after vacuum aluminum-coated its OTR oxygen transmission rate and Water vapour permeability is greatly lowered, and the shelf life of food is greatly lowered the most accordingly.So both having needed general The features such as moist, the excellent heat resistance of the high transparent required by packaging film, high resistant, low temperature heat seal, with Time also needed to ultra-low temperature heat sealing, excellent toughness and anti-impact force, be the most just avoided that packaging bag is in accumulating Journey occurs the phenomenons such as gas leakage or quick-fried bag.And the most common cast polypropylene film is extremely difficult to ultralow warm Envelope, high tenacity and the requirement of high impact properties, especially can not pouring nitrogen in packaging bag, also can even if pouring Become flat bag.
Metallocene ethylene-hexene copolymer has the hot strength of brilliance, impact resistance and puncture, polyene Olefin elastomer has the features such as pliability, low temperature seal, low-temperature impact resistance, the transparency, if by this Two kinds of materials join in the production of cast polypropylene film, are expected to promote its high tenacity, high impact-resistant The performance of power, can make again film on the premise of keeping original heat seal strength, reduce about heat-sealing temperature 3-5 degree. But the melt viscosity of metallocene ethylene-hexene copolymer and polyolefin elastomer is big, with mixing of pp material Property bad, if be added directly in raw material, plasticizing can be produced bad, so that film surface produces brilliant point.
Summary of the invention
The technical problem to be solved in the present invention is to overcome common cast polypropylene film can not have ultralow temperature simultaneously Heat-sealing, excellent toughness and the defect of anti-impact force, solve metallocene ethylene-hexene copolymer and polyolefin simultaneously The shortcoming that elastomer fluidity of molten is bad, it is provided that one has ultra-low temperature heat sealing, excellent toughness and shock resistance Power also can the cast polypropylene film that extend shelf life and preparation method thereof and the application in gas flush packaging.
The present invention solves that the problems referred to above be the technical scheme is that
The invention provides a kind of cast polypropylene film, use three-decker, respectively hot sealing layer, sandwich layer With corona layer；
Wherein the consisting of of hot sealing layer: metallocene ethylene-hexene copolymer 10-20%, polyolefin elastomer 5-20%, Antiplastering aid 1-3%, remaining is ternary polymerized polypropylene；
Consisting of of its center core layer: HOPP 70-90%, metallocene ethylene-hexene copolymer 10-30%；
Wherein the consisting of of corona layer: antiplastering aid 1-3%, remaining is ternary polymerized polypropylene；
The content of above-mentioned each component is the most by weight percentage；
Described cast polypropylene film is to use three-layer co-extruded production technology to prepare, and the raw material cyclopentadienyl of hot sealing layer Metal ethylene-hexene copolymer, polyolefin elastomer, antiplastering aid and ternary polymerized polypropylene are entering extruder The most first carry out that granulation is blended modified, make four kinds of raw materials be a granulated into a class raw material material after melting.
Further, described antiplastering aid is general AB6018PP, AB of Constant 6089 PP, AB6019PP In one.
Further, described polyolefin elastomer is Exxon Mobil Vistamaxx3980FL, PBE Vistamaxx 6202 or Mitsui POE DF840.
Further, in cast polypropylene film, the ratio of the thickness of hot sealing layer, sandwich layer and corona layer is 15-25:67-50:18-25。
Cast polypropylene film of the present invention has ultra-low temperature heat sealing and good toughness and anti-impact force, Therefore be suitable for gas flush packaging, therefore the invention provides described cast polypropylene film answering in gas flush packaging With.
Compared with prior art, the beneficial effects of the present invention is:
(1) present invention changes by several raw materials of hot sealing layer first carried out before entering extruder blended granulation Property, (production technology of general CPP is simply by several to make several raw material be a granulated into a class raw material material after melting Plant raw material and carry out blended being uniformly dispersed, do not carry out granulation modification and make a class feed particles), solve The melting means of metallocene ethylene-hexene copolymer and polyolefin elastomer differs relatively big (cyclopentadienyl gold with polyacrylic melting means The melting means that melting means is 3.5g/10min, V-3980FL belonging to ethylene-hexene copolymer is 3.7g/10min, POE The melting means of DF840 be 3.6g/10min, Vistamaxx 6202 melting means be 9.1g/10min, for CPP film Polyacrylic melting means at 7-8g/10min) problem.
(2) metallocene ethylene-hexene copolymer and this two classes material of polyolefin elastomer are joined stream by the present invention Prolong in the production of polypropylene film, its high tenacity, the performance of high impact-resistant power can be promoted, film can be made again On the premise of keeping original heat seal strength, reduce about heat-sealing temperature 3-5 degree, be suitable for gas flush packaging.
Accompanying drawing explanation
Fig. 1 is for the ultra-low temperature heat sealing cast polypropylene film structure chart of gas flush packaging；
Fig. 2 is for the production technological process of the ultra-low temperature heat sealing cast polypropylene film of gas flush packaging.
Detailed description of the invention
With specific embodiment, technical scheme is described further below, but the protection model of the present invention Enclose and be not limited to this:
The preparation of cast polypropylene film of the present invention, uses three-layer co-extruded production technology, and equipment produces speed Degree 100～180m/min.With the cast polypropylene film (threeply degree ratio is as 2:6:2) producing 25 micron thickness As a example by, its technological process of production as shown in Figure 2:
Embodiment one: gas flush packaging ultra-low temperature heat sealing cast polypropylene film 1#
Hot sealing layer uses ternary polymerized polypropylene (Singapore FL7641) 78%, metallocene ethene-alkene copolymerization Thing (Exxon Mobil MPE3518) 10%, polyolefin elastomer (Exxon Mobil Vistamaxx3980FL) 10%, the antiplastering aid (AB6018CPP that Constant is general) of 2%, and these four kinds of materials are blended granulation.
Sandwich layer employing HOPP (the homopolymerization material FC801MX of oil of SPC) 90%, metallocene ethene- Alkene copolymer 10%.
Corona layer uses ternary polymerized polypropylene (Singapore ternary polymerization material FL7540) 99%, antiplastering aid (health The AB6018CPP of Stamp) 1%.
Using three-layer co-extruded production technology, technological parameter is: corona: 25kw, casting roller temperature: 38 DEG C, Constant temperature roll temperature: 35 DEG C, equipment speed of production 150m/min.
Embodiment two: gas flush packaging ultra-low temperature heat sealing cast polypropylene film 2#
Hot sealing layer uses ternary polymerized polypropylene 68% (Singapore FL7641), metallocene ethene-alkene copolymerization Thing (Exxon Mobil MPE3518) 15%, polyolefin elastomer (Exxon Mobil Vistamaxx3980FL) 15%, the antiplastering aid (AB6018CPP that Constant is general) of 2%, and these four kinds of materials are blended granulation.
Sandwich layer employing HOPP (the homopolymerization material FC801MX of oil of SPC) 90%, metallocene ethene- Alkene copolymer (Exxon Mobil MPE3518) 10%.
Corona layer uses ternary polymerized polypropylene (Singapore ternary polymerization material FL7540) 99%, antiplastering aid (health The AB6018CPP of Stamp) 1%.
Using three-layer co-extruded production technology, technological parameter is: corona: 25kw, casting roller temperature: 38 DEG C, Constant temperature roll temperature: 35 DEG C, equipment speed of production 150m/min.
Embodiment three: gas flush packaging ultra-low temperature heat sealing cast polypropylene film 3#
Hot sealing layer uses ternary polymerized polypropylene (Singapore FL7641) 63%, metallocene ethene-alkene copolymerization Thing (Exxon Mobil MPE3518) 15%, polyolefin elastomer a ((Exxon Mobil Vistamaxx3980FL)) 10%, polyolefin elastomer b (Exxon Mobil Vistamaxx 6202) 10%, The antiplastering aid (AB6018CPP that Constant is general) of 2%, and these five kinds of materials are blended granulation.
Sandwich layer employing HOPP (the homopolymerization material FC801MX of oil of SPC) 90%, metallocene ethene- Alkene copolymer (Exxon Mobil MPE3518) 10%.
Corona layer uses ternary polymerized polypropylene (Singapore ternary polymerization material FL7540) 99%, antiplastering aid (health The AB6018CPP of Stamp) 1%.
Using three-layer co-extruded production technology, technological parameter is: corona: 25kw, casting roller temperature: 38 DEG C, Constant temperature roll temperature: 35 DEG C, equipment speed of production 150m/min.
Embodiment four: common cast polypropylene film
Hot sealing layer uses ternary polymerized polypropylene (Singapore FL7641), and (Constant is general for the antiplastering aid of 2% AB6018CPP)。
Sandwich layer uses HOPP (the homopolymerization material FC801MX of oil of SPC).
Corona layer uses ternary polymerized polypropylene (Singapore ternary polymerization material FL7540) 99%, antiplastering aid (health The AB6018CPP of Stamp) 1%.
Using three-layer co-extruded production technology, technological parameter is: corona: 25kw, casting roller temperature: 38 DEG C, Constant temperature roll temperature: 35 DEG C, equipment speed of production 150m/min.
Drawing of the ultra-low temperature heat sealing cast polypropylene film for gas flush packaging produced by above-mentioned formula and technique Stretch the data of intensity, elastic modelling quantity, puncture strength and heat-sealing temperature and intensity and common cast polypropylene film Elastic modelling quantity data compare and see table:

Claims (6)

1. a cast polypropylene film, uses three-decker, respectively hot sealing layer, sandwich layer and corona layer； It is characterized in that:
Wherein the consisting of of hot sealing layer: metallocene ethylene-hexene copolymer 10-20%, polyolefin elastomer 5-20%, antiplastering aid 1-3%, remaining is ternary polymerized polypropylene；
Consisting of of its center core layer: HOPP 70-90%, metallocene ethylene-hexene copolymer 10-30%；
Wherein the consisting of of corona layer: antiplastering aid 1-3%, remaining is ternary polymerized polypropylene；
The content of above-mentioned each component is the most by weight percentage；
Described cast polypropylene film is to use three-layer co-extruded production technology to prepare, and the raw material cyclopentadienyl of hot sealing layer Metal ethylene-hexene copolymer, polyolefin elastomer, antiplastering aid and ternary polymerized polypropylene are entering extruder The most first carry out that granulation is blended modified, make four kinds of raw materials be a granulated into a class raw material material after melting.
2. cast polypropylene film as claimed in claim 1, it is characterised in that: described antiplastering aid is health One in AB6018PP, AB 6089PP, AB6019PP of Stamp.
3. cast polypropylene film as claimed in claim 1, it is characterised in that: described polyolefin elastic Body is Exxon Mobil Vistamaxx3980FL, PBE Vistamaxx 6202 or Mitsui POE DF840。
4. cast polypropylene film as claimed in claim 2, it is characterised in that: described polyolefin elastic Body is Exxon Mobil Vistamaxx3980FL, PBE Vistamaxx 6202 or Mitsui POE DF840。
5. the cast polypropylene film as described in one of Claims 1 to 4, it is characterised in that: cast polypropylene In film, the ratio of the thickness of hot sealing layer, sandwich layer and corona layer is 15-25:67-50:18-25.
6. cast polypropylene film application in gas flush packaging as claimed in claim 1.
CN201610130805.7A 2016-03-08 2016-03-08 Ultralow-temperature heat sealing casting polypropylene film and application thereof Pending CN105774167A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107323048A (en) * 2017-08-09 2017-11-07 嘉兴鹏翔包装材料有限公司 A kind of inflation at a high speed is packed for VMCPP metallized films automatically
CN112318843A (en) * 2020-10-26 2021-02-05 广东安德力新材料有限公司 Preparation method of polypropylene film layer for reducing cracks in cold punching process
CN112677610A (en) * 2020-12-30 2021-04-20 大连大富塑料彩印有限公司 Ultra-low temperature heat-sealing type curtain coating polypropylene aluminized substrate film
CN114000109A (en) * 2021-11-03 2022-02-01 广东正一包装股份有限公司 Preparation method of inflatable high-barrier aluminized VMCPP film
CN114045464A (en) * 2021-11-03 2022-02-15 广东正一包装股份有限公司 Preparation method of inflatable high-barrier cast polypropylene aluminized film
CN114142170A (en) * 2021-10-22 2022-03-04 浙江华正能源材料有限公司 Puncture-resistant electrolyte-resistant cast polypropylene film, aluminum plastic film and application thereof
CN115139615A (en) * 2022-08-25 2022-10-04 河北泰达包装材料有限公司 Flexible package modified CPP film and production method thereof
CN115179627A (en) * 2022-05-31 2022-10-14 江阴宝柏新型包装材料有限公司 Ultralow-temperature heat-sealing PE film and preparation method thereof
CN115991910A (en) * 2021-10-20 2023-04-21 中国石油化工股份有限公司 Flame-retardant polypropylene composite film and preparation method and application thereof
CN115991911A (en) * 2021-10-20 2023-04-21 中国石油化工股份有限公司 Polypropylene composite film and preparation method and application thereof

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CN101659141A (en) * 2009-06-30 2010-03-03 湖北慧狮塑业股份有限公司 Ultra-low temperature heat sealing polypropylene casting film
CN101665172A (en) * 2009-09-04 2010-03-10 浙江大东南包装股份有限公司 Packaging film of CPP agricultural product with ultra-low temperature heat sealing and high fastness and preparation method thereof
CN101927591A (en) * 2010-07-08 2010-12-29 福建凯达印务有限公司 Low temperature resistant triple coextrusion composite film and preparation method thereof
CN102700209A (en) * 2012-05-15 2012-10-03 杭州洁能塑料包装有限公司 Film with high heat-seal intensity

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101659141A (en) * 2009-06-30 2010-03-03 湖北慧狮塑业股份有限公司 Ultra-low temperature heat sealing polypropylene casting film
CN101665172A (en) * 2009-09-04 2010-03-10 浙江大东南包装股份有限公司 Packaging film of CPP agricultural product with ultra-low temperature heat sealing and high fastness and preparation method thereof
CN101927591A (en) * 2010-07-08 2010-12-29 福建凯达印务有限公司 Low temperature resistant triple coextrusion composite film and preparation method thereof
CN102700209A (en) * 2012-05-15 2012-10-03 杭州洁能塑料包装有限公司 Film with high heat-seal intensity

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107323048A (en) * 2017-08-09 2017-11-07 嘉兴鹏翔包装材料有限公司 A kind of inflation at a high speed is packed for VMCPP metallized films automatically
CN112318843A (en) * 2020-10-26 2021-02-05 广东安德力新材料有限公司 Preparation method of polypropylene film layer for reducing cracks in cold punching process
CN112677610A (en) * 2020-12-30 2021-04-20 大连大富塑料彩印有限公司 Ultra-low temperature heat-sealing type curtain coating polypropylene aluminized substrate film
CN115991910A (en) * 2021-10-20 2023-04-21 中国石油化工股份有限公司 Flame-retardant polypropylene composite film and preparation method and application thereof
CN115991911B (en) * 2021-10-20 2024-07-02 中国石油化工股份有限公司 Polypropylene composite film and preparation method and application thereof
CN115991911A (en) * 2021-10-20 2023-04-21 中国石油化工股份有限公司 Polypropylene composite film and preparation method and application thereof
CN114142170A (en) * 2021-10-22 2022-03-04 浙江华正能源材料有限公司 Puncture-resistant electrolyte-resistant cast polypropylene film, aluminum plastic film and application thereof
CN114000109A (en) * 2021-11-03 2022-02-01 广东正一包装股份有限公司 Preparation method of inflatable high-barrier aluminized VMCPP film
CN114000109B (en) * 2021-11-03 2024-02-09 广东正一包装股份有限公司 Preparation method of inflatable high-barrier aluminized VMCPP film
CN114045464B (en) * 2021-11-03 2024-02-09 广东正一包装股份有限公司 Preparation method of inflatable high-barrier cast polypropylene aluminized film
CN114045464A (en) * 2021-11-03 2022-02-15 广东正一包装股份有限公司 Preparation method of inflatable high-barrier cast polypropylene aluminized film
CN115179627A (en) * 2022-05-31 2022-10-14 江阴宝柏新型包装材料有限公司 Ultralow-temperature heat-sealing PE film and preparation method thereof
CN115139615A (en) * 2022-08-25 2022-10-04 河北泰达包装材料有限公司 Flexible package modified CPP film and production method thereof

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Application publication date: 20160720