CN112659698A - Multilayer film with pearlescent piano black effect layer, preparation method, test method and application thereof - Google Patents
Multilayer film with pearlescent piano black effect layer, preparation method, test method and application thereof Download PDFInfo
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- CN112659698A CN112659698A CN202011558520.6A CN202011558520A CN112659698A CN 112659698 A CN112659698 A CN 112659698A CN 202011558520 A CN202011558520 A CN 202011558520A CN 112659698 A CN112659698 A CN 112659698A
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Abstract
The multilayer film with the pearlescent piano black effect layer is characterized by consisting of an acrylic resin film, a first anchoring layer, a pearlescent layer, a second anchoring layer, a piano black background layer, an adhesive layer and an ABS film which are sequentially prepared in a superposition mode, wherein the thickness of the first anchoring layer and the second anchoring layer is 1-2 microns.
Description
Technical Field
The invention relates to a multilayer film, and a preparation method, a test method and application thereof, in particular to a multilayer film with a pearlescent piano black effect layer, and a preparation method, a test method and an application thereof.
Background
Along with social development, parts such as household appliances, automobiles, mobile phones and the like are largely made of plastic parts, and the surfaces of the plastic parts are decorated by molded diaphragms with pearly-lustre piano black effect, so that the high-quality decoration effect can be shown, the requirements of high-grade decoration are met, and particularly the requirements of automobile interior parts with three-dimensional stretch molding are met.
At present, the known film with the pearly luster piano black effect is a pearly luster and piano black coating film on PET, or is compounded with PVC films and the like to form a pearly luster black composite film which is used for decorative plates, plastic surface decoration and the like. The black film of the pearlescent piano adopting the technologies has limited stretch formability, limited surface protection and insufficient durability, and can not meet the requirements of the fields of deep stretch forming, durability application and the like of automotive interiors.
Therefore, a pearlescent piano black film with various stretch forming patterns, strong surface protection and wear resistance is needed.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides a multilayer film with pearly-lustre piano black effect, which can be used for surface decoration of durable forming parts such as automotive interiors and the like.
In order to solve the above technical problems, according to one embodiment of the present invention, there is provided a multilayer film having a pearlescent piano black effect layer, wherein the multilayer film is composed of an acrylic resin film 1, a first anchor layer 2, a pearlescent layer 3, a second anchor layer 4, a piano black background layer 5, an adhesive layer 6 and an ABS film 7, which are sequentially laminated together, and the first and second anchor layers have a thickness of 1 to 2 μm.
According to one embodiment of the present invention, the first and second anchor layers are formed by coating a coating liquid comprising the following components in parts by weight on an acrylic resin film by gravure printing and drying: 30-40 parts of acrylic resin; 5-10 parts of styrene-maleic anhydride resin and 10-15 parts of polyvinyl butyral resin; 4-8 parts of isocyanate trimer; 40-50 parts of a solvent.
According to one embodiment of the present invention, the acrylic resin film has a thickness of 60 to 125 μm.
According to one embodiment of the invention, the pearlescent layer is a pearlescent ink layer printed by a gravure printing process and has a thickness of 1-3 microns.
According to one embodiment of the invention, the piano black background layer is a piano black film layer which is synchronously coated in a matched mode by printing and has the thickness of 3-5 microns.
According to one embodiment of the invention, the acrylic resin is a high acid number acrylic resin having a Tg of 80-120 ℃.
According to one embodiment of the present invention, the styrene-maleic anhydride resin is a styrene-maleic anhydride resin having a Tg of 60-120 ℃ and an acid value of 100-300.
According to one embodiment of the present invention, the thickness of the ABS film is 200-500 microns.
According to one embodiment of the present invention, the solvent is a mixed solvent of ethyl acetate and butyl acetate.
According to an embodiment of the present invention, there is provided a method of preparing a multi-layered film having a pearlescent piano black effect layer, the multi-layered film being composed of an acryl film, a first anchor layer, a pearlescent layer, a second anchor layer, a black background layer, a glue layer and an ABS film, which are sequentially laminated together, the method including the steps of: preparing an anchoring layer coating liquid, a pearl layer ink and a black background layer ink; sequentially printing or coating a first anchoring layer, a pearly-lustre layer, a second anchoring layer and a piano black background layer on the acrylic resin film through a gravure printing machine; coating a glue layer on a coating and re-coating machine and compounding an ABS film on line; and pressing the prepared pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, and then putting the formed diaphragm into an injection mold for injection molding.
According to an embodiment of the present invention, there is provided a method of testing and evaluating a pearlescent piano black multilayer film composed of an acryl film, a first anchor layer, a pearlescent layer, a second anchor layer, a piano black background layer, a glue layer, and an ABS film, which are sequentially laminated together, the method including the steps of: observing the full and clear pearly-lustre piano black pearly-lustre effect of the printed pearly-lustre piano black effect multilayer film; carrying out high and low temperature resistant cycle characteristic test on the multilayer film with the pearlescent piano black effect; carrying out a heat aging resistance test on the multi-layer film with the pearly-lustre piano black effect; carrying out a light aging resistance test on the pearlescent piano black effect multilayer film; carrying out wear resistance test on the pearlescent piano black effect multilayer film; and according to observation and test of the pearlescent piano black effect multilayer film, the appearance, the adhesive force and the abrasion resistance are respectively evaluated.
Therefore, the invention, through the selection of various components in the anchoring layer, the adjustment of the dosage and the interaction among various components, ensures the interlayer anchoring effect, improves the transferability of the pearlescent ink on one hand, and ensures the pearlescent appearance to be consistent with the printing plate; on the other hand, the ink impact caused by printing the piano black background layer after the pearly-lustre printing layer can be reduced, the clear and attractive pearly-lustre effect is ensured, and the clear pearly-lustre effect is combined with the piano black background layer to form the high-texture pearly-lustre piano black effect.
Drawings
Aspects of the disclosure will be explained in more detail below in connection with advantageous embodiments of the invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of a multi-layered film having a pearlescent piano black effect layer according to one embodiment of the present invention.
Fig. 2 is a flowchart of a method of preparing a multi-layered film having a pearlescent piano black effect layer according to one embodiment of the present invention.
Fig. 3 is a flowchart of a method of testing a multi-layered film having a pearlescent piano black effect layer according to one embodiment of the present invention.
Fig. 4 is a graph showing the results of the multi-layer film test with the pearl piano black effect of comparative example (a) and example (B), respectively.
FIG. 5 is a graph showing the results of the apparent morphology of comparative example 1 of the present invention; the piano black background layer corrodes and destroys the pearly layer, and the obtained pearly effect is not full and not clear.
FIG. 6 is a graph showing the results of the apparent morphology of comparative example 2 of the present invention; the thickness of the first anchoring layer exceeds 2 μm, and the pearl effect is not full.
FIG. 7 is a graph showing the results of the apparent morphology of comparative example 3 of the present invention; the thickness of the second anchoring layer is less than 1 mu m, the pearly layer is not protected sufficiently, the pearly layer is corroded and damaged by the piano black background layer, and the pearly effect is not full and unclear.
FIG. 8 is a graph showing the results of the apparent morphology of example 1 of the present invention; the pearl effect is full and clear.
FIG. 9 is a graph of the apparent morphology results of example 2 of the present invention; the pearl effect is full and clear.
FIG. 10 is a graph showing the results of the apparent morphology of example 3 of the present invention; the pearl effect is full and clear.
FIG. 11 is a graph showing the results of the apparent morphology of example 4 of the present invention; the pearl effect is full and clear.
FIG. 12 is a graph showing the results of the apparent morphology of example 5 of the present invention; the pearl effect is full and clear.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Fig. 1 is a schematic structural view of a multi-layered film having a pearlescent piano black effect according to an embodiment of the present invention. As shown in the drawings, according to one embodiment of the present disclosure, the multi-layered film having a pearl piano black effect includes an acryl film 1, a first anchoring layer 2, a pearl layer 3, a second anchoring layer 4, a piano black background layer 5, a glue layer 6, and an ABS film 7, which are sequentially laminated together. The pearlescent layer 3, the anchoring layer 4 and the piano black background layer 5 constitute a pearlescent piano black effect layer 8.
The thickness of the acrylic resin film 1 is 60-125 micrometers, the acrylic resin film 1 is a film taking polymethyl methacrylate as a main component, the acrylic resin film has excellent weather resistance and wear resistance, the surface of a multilayer film has excellent protection characteristics, the thickness of the acrylic resin film 1 is less than 60 micrometers, the acrylic resin film is very easy to break in a printing process, the process control difficulty is high, large-scale production is difficult to achieve, the thickness is more than 125 micrometers, the cost is high, the temperature and pressure required in forming are high, and the composite film is difficult to flatten in application.
The first anchoring layer 2 is arranged between the acrylic resin film 1 and the pearlescent layer 3, and is mainly used for providing an excellent substrate for printing the pearlescent layer 3, ensuring the transfer morphology of the pearlescent layer 3 in the printing process and preventing the blurring of the black effect of the pearlescent piano caused by the iridescent printing layer color halo.
The thickness of the first anchoring layer 2 is 1-2 microns and lower than 1 micron, the pearl absorption effect is not obvious, the maintenance effect on the black appearance of the pearl piano is not obvious, the thickness is larger than 2 microns, and the plumpness of the black appearance of the pearl piano is reduced. The anchoring layer 2 is 1-2 microns thick, and is formed by coating a coating liquid consisting of the following substances in parts by weight on an acrylic resin film 1 and drying the coating liquid: 30-40 parts of acrylic resin; 5-10 parts of styrene-maleic anhydride resin and 10-15 parts of polyvinyl butyral resin; 4-8 parts of isocyanate trimer; 40-50 parts of a solvent.
The acrylic resin is a high acid number acrylic resin with Tg of 80-120 ℃. The high-acid-value acrylic resin has the main function of providing the main body resin of the anchoring layer 2, has an excellent spreading effect on the pearlescent layer ink, can be crosslinked with isocyanate to prepare a solvent-resistant coating, prevents a solvent from damaging the main body structure of the anchoring layer 2 when the pearlescent layer is printed, has excellent heat resistance, and is beneficial to keeping the black appearance and color of the pearlescent piano unchanged in the molding and injection molding process.
The styrene-maleic anhydride resin is styrene-maleic anhydride resin with Tg of 60-120 ℃ and acid value of 100-300, and the main function of the styrene-maleic anhydride resin in the anchoring layer 2 is to provide an excellent attached surface, improve the transfer rate of ink printing of the pearlescent layer 3 and further improve the fullness of the pearlescent effect.
Polyvinyl butyral is a commonly used resin and has a primary role in anchoring the ink receptive layer 2 to provide flexibility and interlayer adhesion. And the isocyanate trimer is an HDI trimer. The solvent used for the anchor layer 2 is a mixed solvent of ethyl acetate and butyl acetate.
The pearlized layer 3 is a pearlized ink layer printed by adopting a gravure printing process, and the thickness is 1-3 microns. The specification of the printing gravure roller is 30 to 60 lines/cm. The pearly layer 3 is a main coating for realizing pearly effect, and the fullness and definition of the pearly effect have obvious influence on the black surface appearance of the pearly piano. The main components of the ink of the pearly layer 3 are high-temperature resistant ink resin varnish and pearly powder, and the viscosity of the ink for printing the pearly layer is generally adjusted to be between 20 and 30 seconds, so that the transfer morphology of the ink is ensured. The thickness of the pearly layer 3 is less than 1 micron, the pearly plumpness is insufficient and is higher than 3 microns, the pearly effect is not uniform, and printing stripes appear.
The second anchoring layer 4 is a gravure-printed anchoring layer, using the same formulation and process as the first anchoring layer 2, with a thickness of 1-2 microns. The main function is to provide protection for the pearlized layer 3, prevent the corrosion damage to the pearlized layer caused by the process of coating the piano black background layer and prevent the blurring of the pearlized piano black effect caused by the faint color of the piano black background.
The piano black background layer 5 is a background layer which is printed by adopting a gravure roller in a matching way, the thickness is 3-5 microns, and the piano black background layer 5 is used for providing a high-brightness black background, so that the texture of the pearly-lustre piano black effect is improved. The thickness of the piano black background layer 5 is less than 3 microns, the coverage is insufficient, and the thickness of the piano black background layer more than 5 microns is easy to cause corrosion to the pearlescent layer, so that the appearance after gluing and compounding is influenced.
The glue layer 6 is a gravure-coated composite glue layer, the thickness is 8-15 microns, the thickness is less than 8 microns, bubbles are easily generated around the pearl powder after the multilayer film is compounded, the thickness is more than 15 microns, and the appearance of the glue layer 6 is obvious, so that the compounded appearance is influenced. The composite glue layer 6 is a two-component material, the main components of which comprise polyester polyol, polyester polyurethane and the like, the cross-linking agent is polyfunctional isocyanate, and the solvent is ethyl acetate.
The thickness of the ABS film 7 is 200-500. mu.m. The ABS film 7 functions to provide excellent stretch moldability and is integrated with an injection molding compound at the time of injection molding.
Fig. 2 is a flowchart of a method of preparing a multilayer film having a pearlescent piano black effect layer according to one embodiment of the present disclosure. As shown in fig. 2, in step S21, an anchor layer 2 coating solution is prepared, and the viscosity is adjusted to 20 to 30 seconds using a No. 4 volt cup. In this step, the ink for printing the required pearl layer 3 and the ink for printing the piano black background layer 5 are prepared.
In step S22, the anchor layer 2, the pearl layer 3, the anchor layer 4, and the piano black background layer 5 are sequentially printed on the acrylic resin film by a gravure printer. The drying temperature of gravure printing is 60-85 ℃, and the printing speed is 30-50 m/min.
Next, in step S23, the subbing layer 6 is coated on the coater and the ABS film 7 is laminated in-line. The coating and drying temperature is 60-80 ℃, the compounding temperature is 80-120 ℃, and the vehicle speed is 10-30 m/min.
In step S24, the pearlescent piano black multilayer film prepared by the above method is pressed into a formed membrane by a high pressure forming machine, and then placed into an injection mold for injection molding.
Fig. 3 is a method of testing and evaluating various properties of a pearlescent piano black multilayer film according to one embodiment of the present disclosure. The test and evaluation methods were as follows:
in step S31, the pearlescent piano black appearance is observed. The morphology of the pearlescent piano black is mainly observed by methods such as electron microscopy and the like, and the uniform, full and clear degree of the pearlescent piano black printed with the pearlescent piano black multilayer film is mainly observed, and the evaluation standards are as follows:
o: the pearl effect is uniform and full, and the effect is clear, as shown in figure 4B;
x: the pearl effect is not full and clear, as shown in fig. 4A.
In step S32, the pearlescent piano black multilayer film was subjected to a low temperature cycle resistance test. The specific process is as follows: the molding is finished by a temperature cycle of-35 ℃. + -. 2 ℃, 5h → 23 ℃. + -. 2 ℃, (50. + -.3)% RH, 0.5h → hyperthermia conditions (90 ℃), 5h → 23 ℃. + -. 2 ℃, (50. + -.3)% RH, 0.5h → 50 ℃. + -. 2 ℃, (95. + -. 3)% RH, 2h → 23 ℃. + -. 2, (50. + -. 3)% RH, and 0.5h followed by a further repetition of the procedure in that order.
In step S33, the pearlescent piano black multilayer film was subjected to a heat aging resistance test: the molded piece was placed in a high temperature oven at 90 ℃ for 168 hours, at room temperature for 2 hours, and then evaluated for appearance and color change.
In step S34, a light aging resistance test was performed on the pearlescent piano black multilayer film: the test is carried out according to SAE J2412, and the irradiation quantity is 1240 kJ/square meter.
In step S35, the abrasion resistance test was performed on the pearlescent piano black multilayer film: the pattern was rubbed 600 times on a Taber abrader using a CS10 wheel at a speed of 60 ± 2rpm, with a load of 5N.
In step S36, the appearance, adhesion, and abrasion resistance were evaluated, respectively.
The appearance was assessed visually:
o: after the test, the surface of the membrane has no wrinkles; the appearance has no crack, fracture, whitening, stripping and expansion; the color does not fade and the luster changes; the surface state has no defects of blurriness, stickiness, wiping and fading, no stain on the effective surface and the like;
x: after the test, the surface of the membrane has wrinkles or cracks, fractures, whitening, peeling and expansion in appearance; the color is faded and faded, and the luster is changed; the surface state is fuzzy, sticky, faded by wiping, and the effective surface has the defects of stain and the like.
The adhesion was evaluated by the following one-hundred-grid method:
o: the method comprises the steps that a check method, namely 3M610 adhesive tape, enables adhesive paper to cling to the surface of a sample plate without air bubbles, and then the adhesive paper is quickly torn off along the 45-degree direction of the surface of a part without falling off;
x: the method is characterized in that a check method, namely 3M610 adhesive tape, enables adhesive paper to cling to the surface of a sample plate without air bubbles, and then the adhesive paper is quickly torn off along the 45-degree direction of the surface of a part, so that 1 or more small checks fall off.
The abrasion resistance test evaluation criteria are as follows:
o: the base material is not worn through, and the black appearance of the pearlescent piano is kept well;
x: the substrate is worn through, and the black appearance of the pearlescent piano is damaged.
According to the method, through selection and adjustment of the amount of various components in the anchoring layer 2 and interaction among the various components, interlayer anchoring effect is guaranteed, on one hand, the transferability of the black printing ink of the pearlescent piano is improved, and the uniformity of black effect of the pearlescent piano is guaranteed; on the other hand, the leveling halation color of the transferred pearlescent piano black printing layer can be reduced, the clear and attractive pearlescent piano black printing is ensured, the clear and full pearlescent layer is combined with the piano black background layer, and the high-texture pearlescent piano black effect is formed.
The present invention will be further described with reference to the following examples.
Comparative example 1
And printing the pearlescent layer 3 and other layers on the acrylic resin film to prepare the pearlescent piano black multilayer film.
Preparing and printing required ink of the pearl layer 3 and ink of the piano black background layer 5 for later use.
Sequentially printing a 0.8 micron pearlescent layer and a 3 micron piano black background layer on a 75 micron thick acrylic resin film by a multicolor group gravure printing machine, printing the acrylic resin film with the pearlescent piano black effect at the drying temperature of 75 ℃ by gravure printing and the printing speed of 30m/min to obtain the acrylic resin film, coating an adhesive layer on a coating and laminating machine, coating and drying an 425 micron ABS film on line at the drying temperature of 60 ℃, the laminating temperature of 80 ℃ and the printing speed of 20m/min to obtain the multilayer film.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 5 shows the appearance of comparative example 1, the black background layer of piano erodes and destroys the pearlized layer, and the obtained pearlized effect is not full and clear.
Comparative example 2
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26255 parts
Polyvinyl butyral resin B30H 10 parts
N33905 parts
38 portions of ethyl acetate
Butyl acetate 12 parts
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Printing an anchoring layer of 4 microns, a pearly layer of 1 micron, an anchoring layer of 1 micron and a piano black background layer of 3 microns on an acrylic resin film with the thickness of 60 microns in sequence by a multicolor group gravure printing machine, wherein the drying temperature of gravure printing is 75 ℃, the printing speed is 30m/min, the acrylic resin film with the pearly-lustre piano black effect is obtained by printing, then coating an adhesive layer on a coating and laminating machine, the thickness is 8 microns, an ABS film with the thickness of 425 microns is compounded on line, the coating and drying temperature is 60-80 ℃, the compounding temperature is 80 ℃, and the speed is 10m/min, so that the multilayer film is obtained.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 6 is the apparent morphology of comparative example 2, with a first anchoring layer thickness exceeding 2 μm and an insufficient pearlescent effect.
Comparative example 3
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26255 parts
Polyvinyl butyral resin B30H 10 parts
N33905 parts
38 portions of ethyl acetate
Butyl acetate 12 parts
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Sequentially printing a 1-micron anchoring layer, a 1-micron pearlized layer, a 0.5-micron anchoring layer and a 3-micron piano black background layer on a 60-micron thick acrylic resin film through a multicolor group gravure printing machine, wherein the gravure printing drying temperature is 75 ℃, the printing speed is 30m/min, printing is carried out to obtain the acrylic resin film with the pearlized piano black effect, then a glue layer is coated on a coating and compounding machine, the thickness is 8 microns, an ABS film with the thickness of 425 microns is compounded on line, the coating and drying temperature is 60-80 ℃, the compounding temperature is 80 ℃, and the speed is 10m/min, so that the multilayer film is obtained.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 7 shows the appearance of comparative example 3, in which the thickness of the second anchoring layer is less than 1 μm, the protection of the pearlescent layer is insufficient, the pearlescent layer is corroded and damaged by the black background layer of the piano, and the pearlescent effect is not full and unclear.
Example 1
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26255 parts
Polyvinyl butyral resin B30H 10 parts
N33905 parts
38 portions of ethyl acetate
Butyl acetate 12 parts
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Sequentially printing a 1-micron anchoring layer, a 1-micron pearlescent layer, a 1-micron anchoring layer and a 3-micron piano black background layer on a 60-micron acrylic resin film through a multicolor group gravure printing machine, wherein the gravure printing drying temperature is 75 ℃, the printing speed is 30m/min, the acrylic resin film with the pearlescent piano black effect is obtained through printing, then, a glue layer is coated on a coating and laminating machine, the thickness is 8 microns, an ABS film with the thickness of 425 microns is compounded on line, the coating and drying temperature is 60-80 ℃, the compounding temperature is 80 ℃, and the speed is 10m/min, so that the multilayer film is obtained.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 8 shows the appearance of example 1, with full and clear pearly luster effect.
Example 2
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26255 parts
Polyvinyl butyral resin B30H 10 parts
N33905 parts
40 parts of ethyl acetate
10 portions of butyl acetate
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Sequentially printing a 2-micron anchoring layer, a 2-micron pearlized layer, a 2-micron anchoring layer and a 5-micron piano black background layer on a 75-micron acrylic resin film by a multicolor group gravure printing machine, wherein the gravure printing drying temperature is 75 ℃, the printing speed is 30m/min, printing is carried out to obtain the acrylic resin film with the pearlized piano black effect, then coating an adhesive layer on a coating and laminating machine, the thickness is 10 microns, an ABS film with the thickness of 425 microns is compounded on line, the coating and drying temperature is 60 ℃, the compounding temperature is 100 ℃, and the speed is 20m/min, so that the multilayer film is obtained.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 9 shows the appearance of example 2, with full and clear pearly luster effect.
Example 3
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 262510 parts
Polyvinyl butyral resin B30H 10 parts
N33905 parts
35 portions of ethyl acetate
10 portions of butyl acetate
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Printing an anchoring layer of 1 micron, a pearlized layer of 1.5 microns, an anchoring layer of 1 micron and a piano black background layer of 5 microns on an acrylic resin film with the thickness of 75 microns in sequence by a multicolor group gravure printing machine, wherein the drying temperature of gravure printing is 75 ℃, the printing speed is 30m/min, printing is carried out to obtain the acrylic resin film with the pearlized piano black effect, then coating an adhesive layer on a coating and compounding machine, the thickness is 15 microns, compounding an ABS film with the thickness of 425 microns on line, the coating and drying temperature is 75 ℃, the compounding temperature is 95 ℃, and the speed is 15m/min, so as to obtain the multilayer film.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 10 shows the appearance of example 3, with full and clear pearly luster effect.
Example 4
Preparation of an anchoring layer coating liquid:
40 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26255 parts
Polyvinyl butyral resin B30H 10 parts
N33908 parts
Ethyl acetate 37 parts
10 portions of butyl acetate
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Sequentially printing a 1.2-micron anchoring layer, a 1.6-micron pearlescent layer, a 1.2-micron anchoring layer and a 4-micron piano black background layer on a 75-micron thick acrylic resin film through a multicolor group gravure printing machine, wherein the drying temperature of gravure printing is 75 ℃, the printing speed is 40m/min, printing is carried out to obtain the acrylic resin film with pearlescent piano black effect, then coating an adhesive layer on a coating machine, the thickness is 9 microns, compounding an 425-micron ABS film on line, the coating drying temperature is 70 ℃, the compounding temperature is 90 ℃, and the speed is 12m/min, thus obtaining the multilayer film.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 11 shows the appearance of example 4, and the pearly luster effect is full and clear.
Example 5
Preparation of an anchoring layer coating liquid:
30 parts of acrylic resin VP 1018F
Styrene maleic anhydride resin SMA 26256 parts
Polyvinyl butyral resin B30H 15 parts
N33904 portion
34 parts of ethyl acetate
11 portions of butyl acetate
And (3) adding ethyl acetate and butyl acetate into a container, sequentially adding the other components, stirring at a high speed, and fully dissolving and dispersing to obtain printing slurry for later use.
Preparing and printing required pearl layer ink and piano black background layer ink for later use.
Printing an anchoring layer of 1.5 microns, a pearlized layer of 2 microns, an anchoring layer of 1.5 microns and a black background layer of 4 microns on an acrylic resin film with the thickness of 125 microns in sequence by a multicolor group gravure printing machine, wherein the drying temperature of gravure printing is 75 ℃, the printing speed is 30m/min, printing is carried out to obtain the acrylic resin film with the pearlized piano black effect, then coating an adhesive layer on a coating and compounding machine, compounding an ABS film with the thickness of 10 microns on line, coating and drying the ABS film at 70 ℃, compounding the ABS film at 90 ℃, and compounding the ABS film at 10m/min to obtain the multilayer film.
And pressing the obtained pearlescent piano black multilayer film into a formed diaphragm through a high-pressure forming machine, then placing the formed diaphragm into an injection mold for injection molding, and testing various performances. FIG. 12 shows the appearance of example 5, with full and clear pearly luster effect.
Table 1 is the test results of the multilayered films having a pearlescent piano black effect of the comparative examples and examples, from which the multilayered film having a pearlescent piano black effect of the present disclosure is full and clear in pearlescent piano black appearance, while the comparative examples are discontinuous and unclear in pearlescent appearance.
The pearlescent piano black disclosed by the invention can be used for surface decoration of automotive interior molded parts and shell decoration of household appliances, mobile phones and the like, and has excellent durability and high-quality pearlescent piano black effect.
Table 1 results of multi-layer film test with pearly-lustre piano black effect of comparative example and example
In conclusion, the molded membrane with the pearly-lustre piano black effect is adopted for decoration on the surface of the plastic part, so that the high-quality decoration effect can be realized, the requirement of high-grade decoration is met, and particularly the requirement of an automobile interior part with three-dimensional stretch molding is met. The black film of the pearlescent piano adopting the technology has various stretching forming patterns, good surface protection and abrasion resistance, thereby meeting the requirements of fields such as automobile interior decoration, which have special requirements on deep stretching forming and durability.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The multilayer film with the pearlescent piano black effect layer is characterized by consisting of an acrylic resin film, a first anchoring layer, a pearlescent layer, a second anchoring layer, a piano black background layer, an adhesive layer and an ABS film which are sequentially prepared in an overlapping mode, wherein the thickness of the first anchoring layer and the second anchoring layer is 1-2 microns.
2. The multilayer film having a pearlescent piano black effect layer according to claim 1, characterized in that: the first anchoring layer and the second anchoring layer are formed by coating a coating liquid consisting of the following substances in parts by weight on an acrylic resin film through gravure printing and drying: 30-40 parts of acrylic resin; 5-10 parts of styrene-maleic anhydride resin and 10-15 parts of polyvinyl butyral resin; 4-8 parts of isocyanate trimer; 40-50 parts of a solvent.
3. The multilayer film having a pearlescent piano black effect layer according to claim 2, characterized in that: the thickness of the acrylic resin film is 60-125 microns; the acrylic resin is a high acid number acrylic resin with Tg of 80-120 ℃; the styrene-maleic anhydride resin is a styrene-maleic anhydride resin with Tg of 60-120 ℃ and acid value of 100-300.
4. The multilayer film having a pearlescent piano black effect layer according to claim 1, characterized in that: the pearlized layer is a pearlized ink layer printed by adopting a gravure printing process, and the thickness of the pearlized layer is 1-3 micrometers.
5. The multilayer film having a pearlescent piano black effect layer according to claim 1, characterized in that: the piano black background layer is a piano black film layer which is printed, coincided and coated synchronously and has the thickness of 3-5 microns.
6. The multilayer film having a pearlescent piano black effect layer according to claim 1, characterized in that: the thickness of the ABS film is 200-500 microns.
7. A method of preparing a multilayer film having a pearlescent piano black effect layer, characterized by: the method is used for preparing the multi-layer film having a pearlescent piano black effect layer according to any one of claims 1 to 6; the method comprises the following steps:
step 1: preparing an anchoring layer coating liquid, a pearlescent layer ink and a piano black background layer ink;
step 2: sequentially printing or coating a first anchoring layer, a pearly-lustre layer, a second anchoring layer and a piano black background layer on the acrylic resin film through a gravure printing machine;
and step 3: coating a glue layer on a coating and re-coating machine and compounding an ABS film on line;
and 4, step 4: pressing the mixture into a formed membrane by a high-pressure forming machine, and then putting the formed membrane into an injection mold for injection molding.
8. A method for testing a pearlescent piano black multilayer film is characterized by comprising the following steps: the method is used for testing and evaluating the multi-layered film having a pearlescent piano black effect layer according to any one of claims 1 to 6; the method comprises the following steps:
step 1: observing the full and clear pearly-lustre piano black pearly-lustre effect of the printed pearly-lustre piano black effect multilayer film;
step 2: carrying out high and low temperature resistant cycle characteristic test on the multilayer film with the pearlescent piano black effect;
and step 3: carrying out a heat aging resistance test on the multi-layer film with the pearly-lustre piano black effect;
and 4, step 4: carrying out a light aging resistance test on the pearlescent piano black effect multilayer film;
and 5: carrying out wear resistance test on the pearlescent piano black effect multilayer film;
step 6: according to observation and test of the pearlescent piano black effect multilayer film, the appearance, the adhesive force and the abrasion resistance are respectively evaluated.
9. Multilayer film for use in automotive interiors, characterized by: a multilayer film comprising the pearlescent piano black effect layer of any one of claims 1-6.
10. Multilayer film for use in automotive interiors, characterized by: the method for producing a multilayer film is a method for producing a multilayer film having a pearlescent piano black effect layer according to claim 7.
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| CN202011558520.6A CN112659698A (en) | 2020-12-25 | 2020-12-25 | Multilayer film with pearlescent piano black effect layer, preparation method, test method and application thereof |
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| CN101934620A (en) * | 2010-07-27 | 2011-01-05 | 河北永新包装有限公司 | Composite film with local pearl effect and preparation method thereof |
| CN108794926A (en) * | 2018-06-20 | 2018-11-13 | 广州市雄星塑料制品有限公司 | A kind of corrosion-resistant weather-proof super matt color alteration of automobile film of macromolecule |
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| JP2019151755A (en) * | 2018-03-05 | 2019-09-12 | 東洋鋼鈑株式会社 | Pearl tone glossy film |
| CN111469570A (en) * | 2020-05-29 | 2020-07-31 | 贵州劲嘉新型包装材料有限公司 | Pearlescent transparent light column effect printing structure and printing method thereof |
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|---|---|---|---|---|
| US4428997A (en) * | 1979-12-26 | 1984-01-31 | Polaroid Corporation | Protective coatings for documents |
| CN101934620A (en) * | 2010-07-27 | 2011-01-05 | 河北永新包装有限公司 | Composite film with local pearl effect and preparation method thereof |
| JP2019151755A (en) * | 2018-03-05 | 2019-09-12 | 東洋鋼鈑株式会社 | Pearl tone glossy film |
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Application publication date: 20210416 |