CN111559128A - Reinforced composite nylon film, composite film and preparation method thereof - Google Patents
Reinforced composite nylon film, composite film and preparation method thereof Download PDFInfo
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- CN111559128A CN111559128A CN202010382674.8A CN202010382674A CN111559128A CN 111559128 A CN111559128 A CN 111559128A CN 202010382674 A CN202010382674 A CN 202010382674A CN 111559128 A CN111559128 A CN 111559128A
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- 229920006284 nylon film Polymers 0.000 title claims abstract description 58
- 239000002131 composite material Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 69
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 49
- 229920002292 Nylon 6 Polymers 0.000 claims abstract description 45
- 239000003292 glue Substances 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 44
- 239000004677 Nylon Substances 0.000 claims abstract description 43
- 229920001778 nylon Polymers 0.000 claims abstract description 43
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 238000001125 extrusion Methods 0.000 claims abstract description 36
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 32
- -1 polysiloxane Polymers 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002952 polymeric resin Substances 0.000 claims abstract description 12
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000004593 Epoxy Substances 0.000 claims abstract description 8
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 395
- 238000003851 corona treatment Methods 0.000 claims description 28
- 238000013329 compounding Methods 0.000 claims description 22
- 239000012793 heat-sealing layer Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 13
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 8
- 238000010411 cooking Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 229920003188 Nylon 3 Polymers 0.000 claims description 3
- 229920003233 aromatic nylon Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920005906 polyester polyol Polymers 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 2
- 229920003180 amino resin Polymers 0.000 claims description 2
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 2
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 8
- 238000009835 boiling Methods 0.000 description 5
- 101000576320 Homo sapiens Max-binding protein MNT Proteins 0.000 description 3
- 229920006121 Polyxylylene adipamide Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 description 1
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 1
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 1
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- 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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
- 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
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of film packaging, in particular to a nylon film capable of being reinforced and compounded, a composite film and a preparation method thereof, wherein the nylon film capable of being reinforced and compounded comprises at least two layers of structures, namely a base material layer and a nylon treating agent layer in sequence; the substrate layer is composed of three layers of co-extrusion biaxially oriented nylon films, wherein the innermost layer of the substrate layer is composed of anti-adhesion master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin; the nylon treating agent layer contains one or more of modified polysiloxane, epoxy compound and amide compound. The nylon film and the composite film thereof which can be reinforced and compounded provided by the invention are mainly used for enhancing the acting force between the glue layer and the nylon layer under the action of the nylon treating agent, and particularly after being boiled and cooked in water, the acting force is more obvious; even under the conditions of high temperature and high humidity such as poaching or stewing, the composite material still has high composite strength and has very wide application prospect.
Description
Technical Field
The invention relates to the technical field of film packaging, in particular to a nylon film capable of enhancing compounding, a composite film and a preparation method of the composite film.
Background
Biaxially oriented nylon film (BOPA) is widely used in the field of film packaging due to its excellent barrier properties, puncture resistance, oil resistance, chemical solvent resistance, and non-toxicity, and is the third largest biaxially oriented film after BOPP and BOPET.
In the actual production process of food, daily necessities, medicine bags and the like, the biaxially oriented nylon film is rarely used alone, generally, the biaxially oriented nylon film is subjected to the working procedures of printing, aluminum plating, coating, compounding and the like, and finally compounded with PE or PP to prepare a composite film, and finally processed into a packaging bag for use. In this process, if the composite strength is too low, particularly under special conditions such as boiling, steaming, etc., problems such as delamination may occur.
In actual production, in order to improve the combined strength of film, mainly through modes such as corona treatment, application number 201520208885.4 'ultra-thin nylon membrane' discloses an ultra-thin nylon membrane, and its announcement day is 11 months 11 days 2015, ultra-thin nylon membrane includes the base film, the downside of base film is connected with interior corona layer, the upside of base layer mo is connected with outer corona layer, and the upside of outer corona layer is connected with the aluminized layer, and this scheme is through carrying out corona treatment simultaneously in the both sides on base layer moat surface, forms interior corona layer after its downside corona treatment and has increased the compound firmness of ultra-thin nylon membrane, and the upside forms the adhesive force of aluminized layer on the ultra-thin nylon membrane through outer corona layer formation after corona treatment; however, the power and time of the corona treatment are limited, if the power is too high and the time is too long, the surface of the film is damaged, the equipment is not good, and meanwhile, the corona treatment is time-efficient and can be attenuated along with the change of the environment and the time.
Therefore, for the downstream wider application, it is necessary to prepare a stable nylon film having high composite strength.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the corona treatment of the film in the prior art is time-efficient and can be attenuated along with the change of environment and time, so that the composite strength of the film is reduced, the invention provides a nylon film capable of enhancing the composite performance, which comprises at least two layers of structures, namely a base material layer and a nylon treating agent layer in sequence;
the substrate layer is composed of three layers of co-extrusion biaxially oriented nylon films, wherein the innermost layer of the substrate layer is composed of anti-adhesion master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin;
the nylon treating agent layer contains one or more of modified polysiloxane, epoxy compound and amide compound.
Wherein, preferably, the modified polysiloxane is epoxy modified polysiloxane;
preferably, the epoxy compound is a compound containing two or more epoxy groups;
preferably, the amide compound comprises one or more of acrylamide, N, N-dimethylacrylamide and hydroxymethyl acrylamide;
the nylon treating agent can properly swell the surface of nylon and effectively combine with polar groups in nylon and glue, thereby generating high adhesive force.
On the basis of the scheme, the outermost layer of the base material layer is composed of nylon 6 and anti-sticking master batch; the middle layer of the base material layer is composed of nylon 6.
Wherein, the anti-adhesion master batch is preferably but not limited to be composed of an anti-adhesion agent, a slipping agent and nylon 6.
Preferably, the anti-blocking agent is composed of one or more of silicon dioxide, talcum powder and calcium carbonate
Preferably, the slipping agent is composed of one or more of erucamide, PE wax and organic silicone oil.
On the basis of the scheme, the outermost layer of the base material layer is composed of 94.5-97% of nylon 6 and 3-5.5% of anti-sticking master batch in percentage by mass; the middle layer of the substrate layer consists of 100% of nylon 6; the innermost layer of the base material layer is composed of 3% -5.5% of anti-sticking master batch and 94.5% -97% of functional raw materials.
On the basis of the scheme, the functional raw materials are composed of 70-90% of nylon 6 and 10-30% of high polymer resin in percentage by mass.
On the basis of the scheme, the polymer resin is one or more of aromatic nylon, polyester polyol, melamine formaldehyde resin, polyvinyl alcohol or amino resin.
Among them, the aromatic nylon is preferably MXD6 or the like.
On the basis of above-mentioned scheme, furtherly, the thickness of substrate layer is 15 ~ 30 mu m, the thickness on nylon finishing agent layer is 3 ~ 5 mu m, the innermost layer and the outmost thickness of substrate layer are 3 ~ 5 mu m, the innermost layer of substrate layer is through corona treatment.
The invention also provides another nylon film capable of reinforcing and compounding, which adopts the nylon film capable of reinforcing and compounding, and at least 1 glue layer is arranged on the outer side of the nylon treating agent layer of the nylon film capable of reinforcing and compounding.
The invention provides a composite film, which adopts the nylon film capable of being reinforced and compounded, wherein the outer side of a nylon treating agent layer of the nylon film capable of being reinforced and compounded is also provided with at least 2 layers of structures, namely a glue layer and a heat sealing layer from inside to outside.
On the basis of the scheme, the glue layer is high-temperature-cooking-resistant waterborne polyurethane glue or acrylic acid glue.
On the basis of the scheme, the heat sealing layer is CPP or LLDPE.
On the basis of the scheme, further, the thickness of the glue layer is 0.5-1.5 mu m; the thickness of the heat sealing layer is 50-60 mu m.
The invention provides a preparation method of the reinforced composite nylon film, which comprises the following preparation steps:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion for mixing, wherein the mixing time is preferably 8min, and after the components are uniformly mixed, preferably controlling the water content to be less than 800ppm, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, then putting the coated thick sheet into an oven for drying, setting the drying temperature of the coated thick sheet in the oven at 80-100 ℃, humidifying the coated thick sheet by a water tank, then putting the coated thick sheet into the oven for synchronous biaxial stretching, setting the stretching temperature at 120-150 ℃ and the stretching rate at 3.0 x 3.0-3.4 x 3.4, setting the setting temperature at 140-160 ℃, and then rolling and slitting the thick sheet for later use;
step c: and (c) compounding the film obtained in the step (b) with the heat sealing layer through glue, and curing at 45 ℃, wherein the curing time is preferably 48h, so as to obtain the composite film.
Compared with the prior art, the nylon film capable of reinforcing and compounding, the composite film and the preparation method thereof provided by the invention have the following advantages:
the reinforced composite nylon film provided by the invention is applied to a composite film, and has high composite strength even under the condition of poaching or stewing, which is of great significance to downstream customers; meanwhile, the damage to the film and equipment caused by continuously improving the corona power due to the fact that the surface dyne value of the film is improved in the production process is avoided, the equipment maintenance cost is reduced, and the product quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a nylon film capable of reinforcing and compounding provided by the present invention;
FIG. 2 is a schematic structural diagram of a composite membrane according to the present invention;
FIG. 3 is a schematic structural diagram of a four-layer composite membrane according to the present invention.
Reference numerals:
10 base material layer 11A layer 12B layer
40 Heat seal layer
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to more clearly illustrate the technical solutions of the examples and comparative examples of the present invention or the prior art, the reference numerals of the three film layers in the substrate layer 10 described in the examples and comparative examples are illustrated below:
namely, the innermost layer of the substrate layer 10 is a C layer 13, the middle layer of the substrate layer 10 is a B layer 12, and the outermost layer of the substrate layer 10 is an a layer 11.
The invention provides a nylon film capable of reinforcing and compounding, which comprises at least two layers of structures as shown in figure 1, wherein a base material layer 10 and a nylon treating agent layer 20 are sequentially arranged;
the base material layer 10 consists of three layers of co-extrusion biaxially oriented nylon films, namely an outermost layer A layer 11, a middle layer B layer 12 and an innermost layer C layer 13;
the outermost layer A layer 11 is composed of nylon 6 and anti-sticking master batch, the middle layer B layer 12 is composed of nylon 6, and the innermost layer C layer 13 is composed of anti-sticking master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin;
the nylon treatment agent layer 20 contains one or more of a modified polysiloxane, an epoxy compound, and an amide compound.
The invention provides another nylon film capable of reinforcing and compounding, which comprises at least three layers of structures as shown in figure 2, namely a substrate layer 10, a nylon treating agent layer 20 and a glue layer 30 in sequence;
the base material layer 10 consists of three layers of co-extrusion biaxially oriented nylon films, namely an outermost layer A layer 11, a middle layer B layer 12 and an innermost layer C layer 13;
the outermost layer A layer 11 is composed of nylon 6 and anti-sticking master batch, the middle layer B layer 12 is composed of nylon 6, and the innermost layer C layer 13 is composed of anti-sticking master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin;
the nylon treatment agent layer 20 contains one or more of a modified polysiloxane, an epoxy compound, and an amide compound;
it should be noted that, with the film layer structure shown in fig. 2 provided by the present invention, a new kind of composite film can be obtained by arranging a composite of different functional film layers on the outer surface of the glue layer 30.
Therefore, the invention provides a composite film, as shown in fig. 3, which comprises a four-layer structure, a substrate layer 10, a nylon treating agent layer 20, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the outermost layer A layer 11 is composed of nylon 6 and anti-sticking master batch, the middle layer B layer 12 is composed of nylon 6, and the innermost layer C layer 13 is composed of anti-sticking master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin;
the nylon treatment agent layer 20 contains one or more of a modified polysiloxane, an epoxy compound, and an amide compound.
The invention also provides the following examples and comparative examples:
example 1
The invention provides a nylon film capable of reinforcing and compounding, which comprises a four-layer structure as shown in figure 3, wherein a base material layer 10, a nylon treating agent layer 20, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the a layer 11 consists of 94.5% of nylon 6 and 5.5% of anti-sticking master batch in mass percentage; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the C layer 13 consists of 3% of anti-sticking master batch and 97% of functional raw materials; the functional raw materials consist of 70 percent of nylon 6 and 30 percent of high molecular resin;
MXD6 is adopted as the high polymer resin;
the nylon treatment agent layer 20 has a thickness of 5 μm.
The thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, then putting the coated thick sheet into an oven at 80 ℃ for drying, humidifying by a water tank, then putting into the oven for synchronous biaxial stretching, setting at the stretching temperature of 125 ℃ and the stretching ratio of 3.2 x 3.2, wherein the setting temperature is 150 ℃, and then rolling and cutting for later use;
step c: and (c) compounding the film obtained in the step (b) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the reinforced composite nylon film.
Example 2
The invention provides a nylon film capable of reinforcing and compounding, which comprises a four-layer structure as shown in figure 3, wherein a base material layer 10, a nylon treating agent layer 20, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the layer a 11 consists of, in mass percent, 95.5% of nylon 6 and 4.5% of an anti-sticking masterbatch; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the C layer 13 consists of 4.5 percent of anti-sticking master batch and 95.5 percent of functional raw materials; the functional raw materials consist of 80 percent of nylon 6 and 20 percent of high molecular resin
The polymer resin is melamine formaldehyde resin;
the nylon treatment agent layer 20 had a thickness of 4 μm.
The thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, then putting the coated thick sheet into a drying oven at 90 ℃ for drying, humidifying by a water tank, then putting the thick sheet into the drying oven for synchronous biaxial stretching, setting at the stretching temperature of 135 ℃ and the stretching ratio of 3.2 x 3.2, wherein the setting temperature is 150 ℃, and then rolling and cutting the thick sheet for later use;
step c: and (c) compounding the film obtained in the step (b) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the reinforced composite nylon film.
Example 3
The invention provides a nylon film capable of reinforcing and compounding, which comprises a four-layer structure as shown in figure 3, wherein a base material layer 10, a nylon treating agent layer 20, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the A layer 11 consists of 97 percent of nylon 6 and 3 percent of anti-sticking master batch in percentage by mass; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the C layer 13 consists of 5.2% of anti-sticking master batch and 94.8% of functional raw materials; the functional raw materials consist of 90 percent of nylon 6 and 10 percent of high molecular resin
The high molecular resin adopts polyester polyol;
the nylon treatment agent layer 20 had a thickness of 4 μm.
The thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, then putting the coated thick sheet into a drying oven at 100 ℃ for drying, humidifying by a water tank, then putting the thick sheet into the drying oven for synchronous biaxial stretching, setting at the stretching temperature of 150 ℃ and the stretching ratio of 3.2 x 3.2, wherein the setting temperature is 150 ℃, and then rolling and cutting the thick sheet for later use;
step c: and (c) compounding the film obtained in the step (b) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the reinforced composite nylon film.
Comparative example 1
The invention provides a nylon film, which comprises a three-layer structure, wherein a substrate layer 10, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the layer A11 and the layer C13 are both composed of 94.5 percent of nylon 6 and 5.5 percent of anti-sticking master batch in percentage by mass; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: and (b) compounding the substrate layer thick sheet obtained in the step (a) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the nylon film.
Comparative example 2
The invention provides a nylon film, which comprises a three-layer structure, wherein a substrate layer 10, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the a layer 11 consists of 94.5% of nylon 6 and 5.5% of anti-sticking master batch in mass percentage; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the C layer 13 consists of 3% of anti-sticking master batch and 97% of functional raw materials; the functional raw materials consist of 70 percent of nylon 6 and 30 percent of high molecular resin
MXD6 is adopted as the high polymer resin;
the thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: and (b) compounding the substrate layer thick sheet obtained in the step (a) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the nylon film.
Comparative example 3
The invention provides a nylon film, as shown in figure 1, which comprises a four-layer structure, a substrate layer 10, a nylon treating agent layer 20, a glue layer 30 and a heat sealing layer 40 are sequentially arranged from outside to inside;
the substrate layer 10 is composed of three layers of co-extruded biaxially oriented nylon films;
the base material layer 10 is composed of an outermost layer A layer 11, an intermediate layer B layer 12 and an innermost layer C layer 13;
the layer A11 and the layer C13 are both composed of 94.5 percent of nylon 6 and 5.5 percent of anti-sticking master batch in percentage by mass; the anti-sticking master batch consists of an anti-sticking agent, a slipping agent and nylon 6.
The B layer 12 is composed of 100% nylon 6;
the nylon treatment agent layer 20 had a thickness of 4 μm.
The thickness of the base material layer 10 is 20 micrometers, the thicknesses of the layer A11 and the layer C13 are both 3 micrometers, wherein the layer C13 is subjected to corona treatment, and the corona value is more than or equal to 52 dyn;
the glue layer 30 is (high temperature cooking resistant) aqueous polyurethane glue, and the thickness is 1 micron;
the heat sealing layer 40 is CPP, and the thickness is 50 μm.
And the following film preparation method is adopted:
step a: preparation of substrate layer slab
Adding all components of the functional raw materials into a high-speed mixer in proportion, mixing for 8min, controlling the water content to be less than 800ppm after uniform mixing, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, then putting the coated thick sheet into a drying oven at 90 ℃ for drying, humidifying by a water tank, then putting the thick sheet into the drying oven for synchronous biaxial stretching, setting at the stretching temperature of 135 ℃ and the stretching ratio of 3.2 x 3.2, wherein the setting temperature is 150 ℃, and then rolling and cutting the thick sheet for later use;
step c: and (c) compounding the film obtained in the step (b) with the CPP through glue, and curing at 45 ℃ for 48 hours to obtain the reinforced composite nylon film.
It should be noted that the specific parameters or some common reagents in the above embodiments are specific examples or preferred embodiments of the present invention, and are not limited thereto; those skilled in the art can adapt the same within the spirit and scope of the present invention.
The invention also tests the relevant performance of each example and comparative example, and the specific result data is shown in table 1.
TABLE 1 Performance test Table for examples and comparative examples
As can be seen from Table 1, the composite film using the reinforced composite nylon film provided by the invention has good composite strength before boiling, or after boiling or boiling, and the mechanical properties are hardly affected much.
Furthermore, the test results show that the composite firmness degree of the film layer of the composite film adopting the reinforced composite nylon film is enhanced under the high-temperature and high-humidity condition under the boiling or steaming condition, and further show that the composite film provided by the invention has more excellent peel strength under the high-temperature and high-humidity condition.
Therefore, the composite film prepared by the invention maintains excellent mechanical property and simultaneously improves the composite strength.
Although terms such as substrate layer, a layer, B layer, C layer, nylon treatment layer, glue layer, heat seal layer, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A nylon film capable of reinforcing and compounding is characterized in that: comprises at least two layers of structures, namely a base material layer (10) and a nylon treating agent layer (20) in sequence;
the base material layer (10) is composed of three layers of co-extruded biaxially oriented nylon films, wherein the innermost layer of the base material layer (10) is composed of anti-sticking master batch and functional raw materials; the functional raw materials consist of nylon 6 and high polymer resin;
the nylon treatment agent layer (20) contains one or more of a modified polysiloxane, an epoxy compound, and an amide compound.
2. The reinforced composite nylon film of claim 1, wherein: the outermost layer of the base material layer (10) consists of nylon 6 and anti-sticking master batch; the middle layer of the base material layer (10) is composed of nylon 6.
3. The reinforced composite nylon film of claim 1, wherein: the outermost layer of the base material layer (10) consists of 94.5-97% of nylon 6 and 3-5.5% of anti-sticking master batch in percentage by mass; the middle layer of the substrate layer (10) consists of 100% of nylon 6; the innermost layer of the base material layer (10) is composed of 3% -5.5% of anti-sticking master batch and 94.5% -97% of functional raw materials.
4. The reinforced composite nylon film of claim 1, wherein: the functional raw materials consist of 70-90% of nylon 6 and 10-30% of high molecular resin by mass percentage.
5. The reinforced composite nylon film of claim 1, wherein: the polymer resin is one or more of aromatic nylon, polyester polyol, melamine formaldehyde resin, polyvinyl alcohol or amino resin.
6. A nylon film capable of reinforcing and compounding is characterized in that: the reinforced composite nylon film as claimed in any one of claims 1 to 5, wherein at least 1 glue layer (30) is further arranged outside the nylon treating agent layer (20) of the reinforced composite nylon film.
7. A composite membrane, characterized by: the reinforced composite nylon film as claimed in any one of claims 1 to 5, wherein at least 2 layers of structures are further arranged on the outer side of the nylon treating agent layer (20) of the reinforced composite nylon film, and the glue layer (30) and the heat sealing layer (40) are arranged in sequence from inside to outside.
8. The composite film of claim 7, wherein: the glue layer (30) is high-temperature-cooking-resistant aqueous polyurethane glue or acrylic acid glue.
9. The composite film of claim 7, wherein: the heat sealing layer is CPP or LLDPE.
10. A method for preparing a composite film according to any one of claims 7 to 9, comprising the steps of:
step a: preparation of substrate layer slab
Firstly, adding all components of functional raw materials into a high-speed mixer in proportion, mixing uniformly, and bagging for later use;
respectively adding the raw materials of the outermost layer, the middle layer and the innermost layer of the base material layer into an auxiliary extrusion 1, a main extrusion 2 and an auxiliary extrusion 2 according to the proportion, and obtaining a three-layer thick sheet base material consisting of the outermost layer, the middle layer and the innermost layer of the base material layer through melt co-extrusion and sheet casting;
thirdly, performing corona treatment on the outermost layer of the substrate layer;
step b: b, unreeling the thick sheet of the base material layer obtained in the step a, coating a nylon treating agent on one side of the outermost layer of the base material layer subjected to corona treatment, putting the coated thick sheet into an oven for drying, humidifying by a water tank, then putting the thick sheet into the oven for synchronous biaxial stretching and shaping, and then rolling and cutting for later use;
step c: and (c) compounding the film obtained in the step (b) with a heat sealing layer through glue, and curing at 45 ℃ to obtain the composite film.
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