CN111875882B - PP tangle film and production method thereof - Google Patents

PP tangle film and production method thereof Download PDF

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Publication number
CN111875882B
CN111875882B CN202010717580.1A CN202010717580A CN111875882B CN 111875882 B CN111875882 B CN 111875882B CN 202010717580 A CN202010717580 A CN 202010717580A CN 111875882 B CN111875882 B CN 111875882B
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parts
adhesive
core layer
zinc oxide
surface layer
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CN111875882A (en
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李汪洋
李怡俊
胡伟
吴磊
张德顺
王爱华
徐凤锦
刘鹏举
刘志强
孙晓华
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Jieshou Tianhong New Material Co ltd
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    • 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
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
    • C09J129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/08—Cellulose derivatives
    • C08J2401/26—Cellulose ethers
    • C08J2401/28—Alkyl ethers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

The invention discloses a PP (polypropylene) kinking film and a production method thereof, wherein the PP kinking film comprises a core layer and a surface layer, and the core layer and the surface layer are compounded through a binder.

Description

PP tangle film and production method thereof
Technical Field
The invention relates to the technical field of a tangle film, and particularly belongs to a PP tangle film and a production method thereof.
Background
With the maturing of polypropylene (PP) film production technology, PP films are more and more widely applied in the packaging industry, and many PP film materials are appeared in order to improve the performance and application range of the PP films. The twisted film is a packaging material commonly used in the packaging industry, and is mainly used for packaging candies and cold drinks and foods, and the twisted film is ensured not to rebound after being packaged, so that the packaging is stable.
Disclosure of Invention
The invention aims to provide a PP kinking film and a production method thereof, which overcome the problems of poor tensile resistance and high price of the kinking film in the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the PP tangle film comprises a core layer and a surface layer, wherein the core layer and the surface layer are compounded through a bonding agent.
Further, the preparation method of the core layer comprises the following steps: uniformly mixing 80 parts of PP resin, 15 parts of carboxymethyl cellulose, 3 parts of modified zinc oxide, 2 parts of food-grade siliceous lubricant and 3.5 parts of epoxy soybean oil, then mixing for 15min at 120 ℃, and then calendering and molding through a four-roll calender to obtain the core layer.
Further, the preparation method of the modified zinc oxide comprises the following steps: dispersing 20 parts of 600-mesh zinc oxide into 100 parts of ethanol solution, adding 10 parts of alpha-aminopropionic acid, heating to 70 ℃, dropwise adding 0.3ml of 98% concentrated sulfuric acid, continuously stirring, condensing, refluxing and reacting for 3 hours, and evaporating ethanol to dryness at 80 ℃ to obtain the modified zinc oxide.
Further, the adhesive is prepared from the following raw materials in parts by weight: 20 parts of PVA, 0.2 part of bisphenol A epoxy resin, 0.3 part of glycerol and 0.6 part of epoxy propanol; the preparation method of the adhesive comprises the following steps: dissolving 20 parts of PVA in 300 parts of water at 80 ℃, then adding 0.3 part of glycerol and 0.6 part of epoxy propanol, stirring and reacting for 4 hours at 80 ℃, cooling to 20 ℃, and adding 0.2 part of bisphenol A type epoxy resin to obtain the adhesive.
Further, the surface layer is homopolymerized PP.
A method of producing a PP tangle film, comprising the steps of:
(1) Heating the surface layer to 90 ℃, and performing transverse stretching and longitudinal stretching;
(2) Coating an adhesive on the surface of the surface layer;
(3) Pressurizing by a double-roller for 0.5kg, compounding the core layer on the adhesive of the surface layer at 80 ℃, cooling, shaping and rolling to obtain the PP twisted film.
Further, the transverse stretching proportion is 100-120%, and the longitudinal stretching proportion is 100-140%.
Further, the coating thickness of the binder is 50um.
Compared with the prior art, the invention has the following implementation effects:
the adhesive is modified by using bisphenol A type epoxy resin and epoxy propanol, so that the adhesive has crosslinking and oxidizing effects and can be crosslinked with molecular chains on the surface of homopolymerized PP; meanwhile, when the homopolymerized PP is used, more functional groups are exposed on the surface of the homopolymerized PP at 90 ℃ through transverse and longitudinal stretching, and the homopolymerized PP can be crosslinked with the binder, so that the bonding strength of the binder and the homopolymerized PP is enhanced.
The modified zinc oxide is added in the core layer, the product of alpha-aminopropionic acid and ethanol generated on the surface of the zinc oxide has better compatibility with PP resin and epoxidized soybean oil, and the compatibility of the zinc oxide and the PP resin is improved, and the core layer is easier to twist a film without springback when in use due to the addition of the zinc oxide and the carboxymethyl cellulose.
The core layer has better lubricating capability through the specially-made binder and the core layer, prevents the wrung film from being adhered to a wrapped product, and has better durability because the core layer is slightly and highly combined with the surface layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The polypropylene (PP) resin has a melt index of 20-30, and is a homopolymer and a copolymer, and the homopolymer PP is from Yingcang plastification Co., ltd.
Example 1
A method of producing a PP tangle film, comprising the steps of:
(1) Preparing a core layer: uniformly mixing 80kg of PP resin with 15kg of carboxymethyl cellulose, 3kg of modified zinc oxide, 2kg of food-grade siliceous lubricant and 3.5kg of epoxy soybean oil, then mixing for 15min at 120 ℃, and then calendering and molding by a four-roll calender to obtain a core layer;
(2) Preparing modified zinc oxide: dispersing 20kg of 600-mesh zinc oxide into 100kg of ethanol solution, then adding 10kg of alpha-aminopropionic acid, heating to 70 ℃, then dropwise adding 0.3ml of 98% concentrated sulfuric acid, continuously stirring, condensing, refluxing and reacting for 3 hours, and then evaporating ethanol to dryness at 80 ℃ to obtain modified zinc oxide;
(3) Preparing a binder: dissolving 20kg of PVA in 300kg of water with the temperature of 80 ℃, then adding 0.3kg of glycerol and 0.6kg of epoxy propanol, stirring and reacting for 4 hours at the temperature of 80 ℃, cooling to 20 ℃, and adding 0.2kg of bisphenol A epoxy resin to obtain a binder;
(4) Heating the homopolymerized PP serving as the surface layer to 90 ℃, and performing transverse stretching and longitudinal stretching, wherein the transverse stretching proportion is 110%, and the longitudinal stretching proportion is 120%;
(5) Coating a binder on the surface of the surface layer, wherein the coating thickness of the binder is 50um;
(6) Pressurizing by a double-wheel roller for 0.5kg, compounding the core layer on the surface layer adhesive at 80 ℃, cooling to 20 ℃, shaping and rolling to obtain the PP twisted film.
Example 2
The difference from example 1 is that the stretching ratio in the transverse direction is 120% and the stretching ratio in the longitudinal direction is 140%; comparative example 1
The difference from example 1 is that modified zinc oxide was replaced with equal mass of 600 mesh zinc oxide.
Comparative example 2
The difference from example 1 is that the amount of the propylene oxide added in the binder is 0.
Comparative example 3
The difference from example 1 is that the amount of the bisphenol A type epoxy resin added to the binder was 0.
The tensile strength of the twisted films of examples 1-2 and comparative example 103 was measured in accordance with GB/T13022-1991 "tensile Property test method for Plastic film", and the peel force between the skin layer and the core layer was measured in accordance with the 180 DEG peel Strength measurement method of GB2792-81, and the results are shown in the following Table:
Figure BDA0002598798030000041
as can be seen from the above table, after the surface layer is stretched by the homopolymerized PP, the bonding strength between the surface layer and the core layer is significantly enhanced, meanwhile, the bonding capability of the bonding agent to the surface layer and the core layer is also stronger, and the modified zinc oxide has a greater influence on the stretching performance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The PP kinking film comprises a core layer and a surface layer, and is characterized in that the core layer and the surface layer are compounded through a bonding agent;
the preparation method of the core layer comprises the following steps: uniformly mixing 80 parts of PP resin, 15 parts of carboxymethyl cellulose, 3 parts of modified zinc oxide, 2 parts of food-grade siliceous lubricant and 3.5 parts of epoxy soybean oil, then mixing for 15min at 120 ℃, and then calendering and molding by a four-roll calender to obtain a core layer;
the adhesive is prepared from the following raw materials in parts by weight: 20 parts of PVA, 0.2 part of bisphenol A epoxy resin, 0.3 part of glycerol and 0.6 part of epoxy propanol; the preparation method of the adhesive comprises the following steps: dissolving 20 parts of PVA in 300 parts of water at 80 ℃, then adding 0.3 part of glycerol and 0.6 part of epoxy propanol, stirring and reacting for 4 hours at 80 ℃, cooling to 20 ℃, and adding 0.2 part of bisphenol A epoxy resin to obtain the adhesive.
2. The PP tangle film according to claim 1, wherein the modified zinc oxide is prepared by a method comprising: dispersing 20 parts of 600-mesh zinc oxide into 100 parts of ethanol solution, adding 10 parts of alpha-aminopropionic acid, heating to 70 ℃, dropwise adding 0.3ml of 98% concentrated sulfuric acid, continuously stirring, condensing, refluxing and reacting for 3 hours, and evaporating ethanol to dryness at 80 ℃ to obtain the modified zinc oxide.
3. The PP tangle film according to claim 2, wherein said top layer is homopolypropylene.
4. A method of producing a PP tangle film according to claim 3, comprising the steps of:
(1) Heating the surface layer to 90 ℃, and performing transverse stretching and longitudinal stretching;
(2) Coating an adhesive on the surface of the surface layer;
(3) Pressurizing by a double-roller for 0.5kg, compounding the core layer on the adhesive of the surface layer at 80 ℃, cooling, shaping and rolling to obtain the PP twisted film.
5. The method of claim 4 wherein the transverse stretch ratio is 100-120% and the longitudinal stretch ratio is 100-140%.
6. The method for producing a PP tangle film according to claim 5, wherein the adhesive is applied to a thickness of 50 μm.
CN202010717580.1A 2020-07-23 2020-07-23 PP tangle film and production method thereof Active CN111875882B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10311125A1 (en) * 2002-03-30 2003-11-27 Henkel Kgaa Multilayer film, useful for the production of flexible packaging, is coated with first hot-sealing adhesive containing cellulose nitrate and acrylic polymers and is sealable against layer based on polyvinyl compound
CN103847199B (en) * 2012-12-04 2016-01-20 浙江众成包装材料股份有限公司 A kind of acrylic polymer multilayer complex films, its preparation method, purposes and goods thereof
CN105419690A (en) * 2015-11-24 2016-03-23 苏州盖德精细材料有限公司 Environment-friendly polyvinyl alcohol glue and preparation method thereof
CN107443821A (en) * 2017-08-24 2017-12-08 安徽松泰包装材料有限公司 A kind of OPP CPE CPP laminated films and its preparation technology
CN108529662A (en) * 2018-05-25 2018-09-14 洛阳理工学院 A kind of method of modifying of nanometer Zinc oxide powder material

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