CN110834439A - Anti-adsorption anti-scratch reflective film and preparation method thereof - Google Patents

Anti-adsorption anti-scratch reflective film and preparation method thereof Download PDF

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Publication number
CN110834439A
CN110834439A CN201810963768.7A CN201810963768A CN110834439A CN 110834439 A CN110834439 A CN 110834439A CN 201810963768 A CN201810963768 A CN 201810963768A CN 110834439 A CN110834439 A CN 110834439A
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adsorption
scratch
layer
thickness
reflective film
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金亚东
杨承翰
刘海波
朱正平
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Ningbo Solartron Technology Co Ltd
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Ningbo Solartron Technology Co Ltd
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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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
    • 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
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • 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
    • B32B2307/584—Scratch resistance

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Abstract

The invention provides an anti-adsorption and anti-scratching reflecting film, which comprises at least one or at most two anti-adsorption and anti-scratching layers and a reflecting layer; the reflecting layer comprises polyester resin, inorganic particles and incompatible resin; the anti-adsorption and anti-scraping layer comprises polyester resin and inorganic particles. The anti-adsorption and anti-scratch reflective film structure is an AB structure or an ABA structure, and the A layerThe surface layer (or the upper and lower surface layers) or the adsorption-preventing and scratch-resisting layer, and the B layer is the reflecting layer (or the middle layer). The surface roughness Ra of the anti-adsorption and anti-scratch reflection film is more than 0.2 mu m, the reflectivity is at least 94.3 percent, and the density is 0.73-0.96g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.

Description

Anti-adsorption anti-scratch reflective film and preparation method thereof
Technical Field
The invention relates to a white reflecting film, in particular to an anti-adsorption and anti-scratch reflecting film and a preparation method thereof.
Background
In recent years, liquid crystal display panels have been used in large quantities as display devices for personal computers, televisions, cellular phones, and the like. These Liquid Crystal Displays (LCDs) provide illumination light by providing a surface light source called a backlight inside, thereby performing display. In order to meet the requirement that the entire screen must be uniformly irradiated with the irradiation light, a surface light source structure called a side light type or a direct type is adopted. Among these, in a thin liquid crystal display panel used for a notebook personal computer or the like, which is desired to be thin and small, a side light type or a side light type, that is, a backlight type in which a light source is provided on a side surface with respect to a screen is suitably used.
In the side-light type backlight, a cold cathode tube or an LED is used as a light source, and light is uniformly spread and diffused from the edge of a light guide plate to uniformly irradiate the entire liquid crystal display panel. Further, a reflective plate is provided around the light source to make the light more effective, and a reflective plate is provided on the back surface of the light guide plate to make the light diffused from the light guide plate to be effectively applied to the liquid crystal panel side. Thereby reducing the loss of light emitted from the light source and making the liquid crystal screen brighter.
On the other hand, the light guide plate is made of a soft material, and is easily scratched by contact with the reflective film in the module assembly process, so that some optical defects of liquid crystal display are caused. The current market mainly improves the scratching problem by performing surface coating treatment on the reflecting film. However, this method has an additional coating process, which increases the manufacturing cost of the reflective film.
Disclosure of Invention
In view of the above, there is a need to provide a reflective film with high reflectivity, which has good anti-absorption and anti-scratch properties, and is simple in process and low in cost.
The invention provides an anti-adsorption and anti-scratching reflecting film, which comprises at least one or at most two anti-adsorption and anti-scratching layers and a reflecting layer; the reflecting layer comprises polyester resin, inorganic particles and incompatible resin; the anti-adsorption and anti-scraping layer comprises polyester resin and inorganic particles.
Furthermore, the structure of the anti-adsorption and anti-scratch reflective film is an AB structure or an ABA structure, the A layer is a surface layer (or an upper surface layer and a lower surface layer) or an anti-adsorption and anti-scratch layer, and the B layer is a reflective layer (or an intermediate layer).
Furthermore, the total thickness of the anti-adsorption and anti-scratch reflection film is 50-350 μm.
Further, the total thickness of the anti-adsorption and anti-scratch reflective film is preferably 188-350 μm.
Further, the total thickness of the adsorption-resistant and scratch-resistant reflecting film is 188 μm optimally.
Furthermore, when the structure of the anti-adsorption and anti-scratch reflection film is an AB structure, the A layer accounts for 6-12%, and the B layer accounts for 88-94%.
Furthermore, when the structure of the anti-adsorption and scratch-resistant reflective film is an ABA structure, the proportion of the A layer is 12-24%, and the proportion of the B layer is 76-88%.
Furthermore, the cost of the layer B of the anti-adsorption and anti-scratch reflecting film is higher than that of the layer A, and the structure of the anti-adsorption and anti-scratch reflecting film is the best ABA structure.
Furthermore, when the structure of the anti-adsorption and anti-scratch reflection film is an ABA structure, the A layer accounts for 16-20% preferably, and the B layer accounts for 80-84%.
Furthermore, when the structure of the anti-adsorption and scratch-resistant reflective film is an ABA structure, the ratio of the A layer is 18% and the B layer is 82% optimally.
Furthermore, the surface roughness Ra of the anti-adsorption and anti-scratch reflection film is more than 0.2 mu m, the reflectivity is at least 94.3 percent, and the density is 0.73-0.96g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.
Furthermore, the content of the polyester resin and the content of the inorganic particles in the anti-adsorption and anti-scratch layer of the anti-adsorption and anti-scratch reflective film are respectively 90% -99.9% and 0.1% -10%.
Further, the polyester resin of the adsorption-resistant scratch-resistant reflective film is selected from one or a combination of at least two of polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate.
Further, the intrinsic viscosity of the polyester resin was 0.68 dL/g.
Further, the polyester resin of the adsorption-resistant scratch-resistant reflective film is preferably polyethylene terephthalate (PET).
Further, the inorganic particles of the anti-adsorption and anti-scratch layer of the anti-adsorption and anti-scratch reflective film comprise one or a combination of at least two of calcium carbonate, silicon dioxide, titanium dioxide and barium sulfate.
Further, the inorganic particles of the adsorption-resistant scratch-resistant layer are preferably calcium carbonate.
Further, the particle size of the calcium carbonate particles is 0.1-5 microns, preferably 2 microns.
Furthermore, the content of polyester resin, incompatible resin and inorganic particles in the reflecting layer of the anti-adsorption anti-scratch reflecting film is 60-80%, 5-20% and 0.5-20%.
Furthermore, incompatible resin of the reflecting layer of the anti-adsorption and anti-scratch reflecting film is polyolefin resin.
Further, the incompatible resin of the reflective layer of the anti-adsorption and anti-scratch reflective film may be at least one of polymethylpentene, polypropylene, polyethylene, polybutylene, cyclic olefin copolymer, polystyrene, and polymethylstyrene.
Furthermore, the incompatible resin of the reflecting layer of the anti-adsorption and anti-scratch reflecting film is polymethylpentene.
Further, the inorganic particles of the reflection layer of the anti-adsorption and anti-scratch reflection film comprise one or a combination of at least two of calcium carbonate, silicon dioxide, titanium dioxide and barium sulfate.
Further, the inorganic particles of the reflection layer of the anti-adsorption and anti-scratch reflection film are selected from titanium dioxide.
Further, incompatible resin of the reflection layer of the anti-adsorption and anti-scratch reflection film forms the cell structure in the structure layer, and the diameter of the cells is 1-2 μm.
Furthermore, the total thickness of the adsorption-resistant anti-scratch reflection film is preferably a three-layer junction of 50-350 mu mThe anti-adsorption anti-scratching layer is prepared from 90-96% of PET resin and 4-10% of calcium carbonate; the proportion of the reflecting layer is 60-80% of PET resin, 0.68dL/g of intrinsic viscosity, 5-20% of polymethylpentene and 0.5-20% of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is at least 0.42μm, the reflectivity is at least 94.3%, and the density is 0.73-0.95g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.
Furthermore, the total thickness of the anti-adsorption and anti-scratch reflective film is preferably a three-layer structure with the thickness of 50-350 μm, and the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate; the proportion of the reflecting layer is 60-80% of PET resin, 0.68dL/g of intrinsic viscosity, 5-20% of polymethylpentene and 0.5-20% of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is at least 0.42μm, the reflectivity is at least 94.6%, and the density is 0.74-0.95g/cm3And no scratch is visible to naked eyes after the scratch test.
Furthermore, the total thickness of the anti-adsorption and anti-scratch reflective film is preferably a three-layer structure with the thickness of 50-350 μm, and the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18 percent of the total thickness, the thickness of the structural layer accounts for 82 percent of the total thickness, the surface roughness Ra (mum) is 0.42 to 0.47μm, the reflectivity is 96.6 to 98.6 percent, and the density is 0.74 to 0.9g/cm3And no scratch is visible to naked eyes after the scratch test.
Furthermore, the total thickness of the anti-adsorption and anti-scratch reflective film is preferably a three-layer structure of 188-350 μm, the content of the polyester resin of the anti-adsorption and anti-scratch layer is 90% -99.9%, and the content of the inorganic particles is 0.1% -10%; the content of polyester resin in the reflecting layer is 60-80%, the content of incompatible resin is 5-20%, and the content of inorganic particles is 0.5-20%; the thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is at least 0.21μm, the reflectivity is at least 96.3%, and the density is highThe degree is 0.73-0.8g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.
Furthermore, the optimal total thickness of the anti-adsorption anti-scratch reflecting film is a three-layer structure with 188 mu m, the content of polyester resin in the anti-adsorption anti-scratch layer is 90-99.9%, and the content of inorganic particles is 0.1-10%; the content of polyester resin in the reflecting layer is 60-80%, the content of incompatible resin is 5-20%, and the content of inorganic particles is 0.5-20%; the thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18 percent of the total thickness, the thickness of the structural layer accounts for 82 percent of the total thickness, the surface roughness Ra (mum) is at least 0.21μm, the reflectivity is at least 96.3 percent, and the density is 0.73-0.8g/cm3And no scratch is visible to naked eyes after the scratch test.
Furthermore, the optimal total thickness of the anti-adsorption and anti-scratch reflective film is a three-layer structure with 188 micrometers, and the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is 0.47μm, the reflectivity is 98.6%, and the density is 0.74g/cm3And no scratch is visible to naked eyes after the scratch test.
The invention also provides a preparation method of the adsorption-resistant anti-scratching reflecting film, when the adsorption-resistant anti-scratching reflecting film is formed according to an ABA three-layer structure, namely the adsorption-resistant anti-scratching reflecting film comprises two adsorption-resistant anti-scratching surface layers and a middle layer with high reflectivity, and the adsorption-resistant anti-scratching reflecting film with the three-layer structure is formed, the preparation method specifically comprises the following steps:
further, the three-layer structure may be formed by the following three-layer co-extrusion process:
(1) and (3) granulation: uniformly mixing polyester resin and inorganic particles, and carrying out twin-screw mixing extrusion granulation to obtain an adsorption-resistant scratch-resistant layer master batch, wherein the temperature of an extruder is 250-270 ℃; and (3) uniformly mixing the polyester resin, the incompatible resin and the inorganic particles, and carrying out double-screw mixing granulation to obtain the master batch of the intermediate reflecting layer. The granulation process of the surface layer anti-adsorption scratch-resistant layer is the same as that of the middle reflecting layer.
(2) Casting a sheet: respectively adding the polyester resin and master batches of the surface layer anti-adsorption scratch-resistant layer into an extruder according to the proportion, wherein the temperature of the extruder is 260-280 ℃; and adding the polyester resin and the master batch of the middle reflecting layer into an extruder according to the proportion to perform three-layer co-extrusion melting plasticization and tape casting to form a three-layer structure.
(3) Stretching to form a film: and longitudinally stretching, transversely stretching and heat setting the casting sheet, wherein the longitudinal stretching temperature is 70-85 ℃, the transverse stretching temperature is 95-110 ℃, and the heat setting temperature is 210-220 ℃ to obtain the anti-adsorption anti-scratch reflecting film with good weather resistance and good reflectivity. Wherein during the stretching the incompatible resin forms a cellular structure in the first structural layer. And finally, winding the anti-adsorption and anti-scratch reflection film into a core for packaging to obtain the finished product of the anti-adsorption and anti-scratch reflection film.
Further, the intrinsic viscosity of the polyester resin was 0.68 dL/g.
The adsorption-resistant anti-scratching reflecting film provided by the invention is used in a backlight module in the field of liquid crystal display, has better matching property with a light guide plate, and can reduce adsorption and scratching defects in the assembling process; meanwhile, the reflecting film has high reflectivity, and the product cost is greatly reduced by using the ABA structure; the preparation method of the anti-adsorption and anti-scratch reflective film provided by the invention can obtain the reflective film with excellent anti-scratch and anti-adsorption performances, is simple and easy to operate, basically has no increase, does not use a coating particle program of a common technology, and can be directly stretched and formed.
Drawings
FIG. 1 is a schematic view of a structure of an anti-scratch anti-absorption reflective film according to the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to fig. 1 and the following embodiments.
The three-layer structure can be formed by the following three-layer co-extrusion process:
(1) and (3) granulation: uniformly mixing polyester resin and inorganic particles, and carrying out twin-screw mixing extrusion granulation to obtain an adsorption-resistant anti-scratching layer master batch, wherein the temperature of an extruder is 260 ℃; and (3) uniformly mixing the polyester resin, the incompatible resin and the inorganic particles, and carrying out double-screw mixing granulation to obtain the master batch of the intermediate reflecting layer. The granulation process of the surface layer anti-adsorption scratch-resistant layer is the same as that of the middle reflecting layer.
(2) Casting a sheet: respectively adding the polyester resin and master batches of the surface layer anti-adsorption scratch-resistant layer into an extruder according to the proportion, wherein the temperature of the extruder is 270 ℃; and adding the polyester resin and the master batch of the middle reflecting layer into an extruder according to the proportion to perform three-layer co-extrusion melting plasticization and tape casting to form a three-layer structure.
(3) Stretching to form a film: and (3) longitudinally stretching, transversely stretching and heat setting the cast sheet, wherein the longitudinal stretching temperature is 80 ℃, the transverse stretching temperature is 105 ℃, and the heat setting temperature is 215 ℃, so that the anti-adsorption and anti-scratch reflective film with good weather resistance and good reflectivity is obtained. Wherein during the stretching the incompatible resin forms a cellular structure in the first structural layer. And finally, winding the anti-adsorption and anti-scratch reflection film into a core for packaging to obtain the finished product of the anti-adsorption and anti-scratch reflection film.
The anti-adsorption anti-scratch reflective film prepared by the invention is subjected to weather resistance test according to the following method:
reflectance ratio: according to the GB/T3979-2008 standard, the reflectivity of the sample is tested by an integrating sphere D/8 DEG structure under the condition of a D65 light source by adopting a ColorQuest XE spectrocolorimeter (manufactured by Hunterlab corporation), the reflectivity data is a weighted average value of the reflectivity of 400-700nm every 10nm wavelength, and the weight corresponds to an energy distribution curve of a D65 light source.
Roughness Ra: the surface roughness Ra value was measured according to ISO1997 test standards using the Mitutoyo surface roughness tester, Sanfeng, Japan. It is believed that the light guide plate is prevented from being adsorbed when Ra is greater than 0.2 μm and less than or equal to 0.4 μm, but a slight adsorption phenomenon occurs in practical cases; when Ra is more than 0.4 μm, no adsorption phenomenon occurs; when Ra is less than 0.2 μm, adsorption phenomenon with the light guide plate is easily generated.
And (3) testing the scratch resistance: and pressing a 200g metal weight on the upper parts of the reflecting film and the light guide plate, moving the reflecting film to reciprocate 20 times, and judging the scratching performance of the reflecting film on the light guide plate. Judging that the scratch is easy to scratch if 3 or more visually recognizable scratches appear; judging the scratch to be slight when less than 3 scratches appear; and judging that no scratch is generated if no scratch is recognizable by naked eyes.
According to the attached figure 1, the combination embodiment is as follows: wherein 11 is a reflection layer, 12, 13 are anti-absorption scratch-resistant layers, 111 is incompatible resin (i.e. polymethylpentene), 112 is a bubble structure, and 113 is inorganic particles (i.e. titanium dioxide).
Example 1
The anti-adsorption anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption anti-scratch layer is 99.9% of PET resin and 0.1% of calcium carbonate. The proportion of the reflecting layer is 60 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 20 percent of polymethylpentene and 20 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer 12 accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 2
The anti-adsorption anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption anti-scratch layer is 99.9% of PET resin and 0.1% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 19.5 percent of polymethylpentene and 0.5 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 3
The anti-adsorption anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption anti-scratch layer is 99.9% of PET resin and 0.1% of calcium carbonate. The proportion of the reflecting layer is 70 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 4
The anti-adsorption anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption anti-scratch layer is 99.9% of PET resin and 0.1% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 5
The anti-adsorption anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption anti-scratch layer is 99.9% of PET resin and 0.1% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 5 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 6
The anti-adsorption and anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 60 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 20 percent of polymethylpentene and 20 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 7
The anti-adsorption and anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 19.5 percent of polymethylpentene and 0.5 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 8
The anti-adsorption and anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 70 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 9
The anti-adsorption and anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 10
The anti-adsorption and anti-scratch reflective film provided by the invention has the formula that the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 5 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 11
The anti-adsorption anti-scratching layer of the anti-adsorption anti-scratching reflecting film provided by the invention is prepared from 90% of PET resin and 10% of calcium carbonate. The proportion of the reflecting layer is 60 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 20 percent of polymethylpentene and 20 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 12
The anti-adsorption anti-scratching layer of the anti-adsorption anti-scratching reflecting film provided by the invention is prepared from 90% of PET resin and 10% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 19.5 percent of polymethylpentene and 0.5 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 13
The anti-adsorption anti-scratching layer of the anti-adsorption anti-scratching reflecting film provided by the invention is prepared from 90% of PET resin and 10% of calcium carbonate. The proportion of the reflecting layer is 70 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 14
The anti-adsorption anti-scratching layer of the anti-adsorption anti-scratching reflecting film provided by the invention is prepared from 90% of PET resin and 10% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
Example 15
The anti-adsorption anti-scratching layer of the anti-adsorption anti-scratching reflecting film provided by the invention is prepared from 90% of PET resin and 10% of calcium carbonate. The proportion of the reflecting layer is 80 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 5 percent of polymethylpentene and 15 percent of titanium dioxide. The thickness of the surface layer anti-adsorption scratch-resistant layer accounts for 18% of the total thickness, and the thickness of the structural layer accounts for 82% of the total thickness. The thickness of the obtained reflective film was 50 μm, and the related properties are shown in Table 1; the thickness of the reflecting film is 188 μm, and the related properties are shown in Table 2; the thickness of the reflective film was 350 μm, and the relevant properties are shown in Table 3.
To better illustrate the beneficial effects of the anti-adsorption and anti-scratch reflective film of the present invention, the present invention also provides a comparative example:
comparative example 1 is DJX50 from Ningbo Yang science Inc.; comparative example DJX188 from Ningbo Yang science Inc.; comparative example 3 is DJX350 from Ningbo Yang science Inc. Relevant properties tables 1-3.
TABLE 150 μm thickness test chart for performance of anti-adsorption and anti-scratch reflective film obtained in examples 1-15 and comparative example 1
Figure BSA0000169508430000061
TABLE 2188 μm thickness test table for performance of anti-adsorption and anti-scratch reflective film obtained in examples 1-15 and comparative example 2
Figure BSA0000169508430000062
Table 3350 μm thickness test table for performance of anti-adsorption and anti-scratch reflective film obtained in examples 1 to 15 and comparative example 3
As can be seen from the data shown in tables 1 to 3, the anti-adsorption and anti-scratch reflective films of examples 6 to 10 have excellent overall performance, and the density of the reflective film of 50 μm is 0.9 to 0.93g/Cm3The reflectivity is 94.6-96.6%, and the surface roughness Ra is 0.42-0.45 μm; 188 μm reflective film with density of 0.74-0.79g/cm3The reflectivity is 96.6-98.6%, and the surface roughness Ra is 0.46-0.49 μm; a 350 μm reflective film having a density of 0.74-0.79g/cm3Is reflected byThe rate is 96.6-98.6%, and the surface roughness Ra is 0.46-0.49 μm; the above examples all achieved no scratch, no adsorption.
In particular, the combination of the anti-absorption and anti-scratch reflective film provided in example 9 has the best performance, and the density of the reflective film is 0.9g/cm at 50 μm3The reflectance was 96.6%, and the surface roughness Ra was 0.43 μm; 188 μm reflective film with density of 0.74g/cm3The reflectance was 98.6%, and the surface roughness Ra was 0.47 μm; 350 μm reflective film with density of 0.74g/cm3The reflectance was 98.6%, and the surface roughness Ra was 0.47 μm;
as can be understood from the data shown in the above tables 1-3, the 188-350 μm reflective film among the reflective films has the best performance, and the 188 μm reflective film has the best performance because the lower the thickness of the reflective film, the lower the cost.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An anti-adsorption anti-scratch reflective film is characterized in that: comprises at least one or at most two layers of anti-adsorption and anti-scratch layers and a reflecting layer; the reflecting layer comprises polyester resin, inorganic particles and incompatible resin; the anti-adsorption and anti-scraping layer comprises polyester resin and inorganic particles.
2. The anti-adsorption and anti-scratch reflective film according to claim 1, wherein: the structure of the anti-adsorption and anti-scratching reflecting film is an AB structure or an ABA structure, the layer A is a surface layer (or an upper surface layer and a lower surface layer) or an anti-adsorption and anti-scratching layer, and the layer B is a reflecting layer (or an intermediate layer).
3. The anti-adsorption and anti-scratch reflective film according to claim 2, wherein: the total thickness of the anti-adsorption and anti-scratch reflective film is 50-350 μm, when the structure of the anti-adsorption and anti-scratch reflective film is an ABA structure, the proportion of the A layer is 12-24%, and the proportion of the B layer is 76-88%.
4. The anti-adsorption and anti-scratch reflective film according to claim 2, wherein: the surface roughness Ra of the anti-adsorption and anti-scratch reflection film is more than 0.2 mu m, the reflectivity is at least 94.3 percent, and the density is 0.73-0.96g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.
5. The anti-adsorption and anti-scratch reflective film according to claim 1, wherein: the content of the polyester resin of the anti-adsorption anti-scratch layer of the anti-adsorption anti-scratch reflecting film is 90% -99.9%, and the content of the inorganic particles is 0.1% -10%.
6. The anti-adsorption and anti-scratch reflective film according to claim 1, wherein: the content of polyester resin, incompatible resin and inorganic particles in the reflecting layer of the anti-adsorption anti-scratch reflecting film is 60-80%, 5-20% and 0.5-20%.
7. The anti-adsorption and anti-scratch reflective film according to claim 3, wherein: the total thickness of the anti-adsorption and anti-scratch reflecting film is preferably a three-layer structure of 50-350 mu m, and the proportion of the anti-adsorption and anti-scratch layer is 90-96% of PET resin and 4-10% of calcium carbonate; the proportion of the reflecting layer is 60-80% of PET resin, 0.68dL/g of intrinsic viscosity, 5-20% of polymethylpentene and 0.5-20% of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is at least 0.42μm, the reflectivity is at least 94.3%, and the density is 0.73-0.95g/cm3And after the scratch test, the number of scratches visible to the naked eye is less than 3.
8. The anti-adsorption and anti-scratch reflective film according to claim 3, wherein: the anti-adsorption and anti-scratch reflective filmThe total thickness of the anti-adsorption anti-scratching layer is a three-layer structure with the thickness of 50-350 mu m, and the proportion of the anti-adsorption anti-scratching layer is 96% of PET resin and 4% of calcium carbonate; the proportion of the reflecting layer is 60-80% of PET resin, 0.68dL/g of intrinsic viscosity, 5-20% of polymethylpentene and 0.5-20% of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18% of the total thickness, the thickness of the structural layer accounts for 82% of the total thickness, the surface roughness Ra (mum) is at least 0.42μm, the reflectivity is at least 94.6%, and the density is 0.74-0.95g/cm3And no scratch is visible to naked eyes after the scratch test.
9. The anti-adsorption and anti-scratch reflective film according to claim 3, wherein: the total thickness of the anti-adsorption and anti-scratch reflective film is preferably a three-layer structure with the thickness of 50-350 mu m, and the proportion of the anti-adsorption and anti-scratch layer is 96% of PET resin and 4% of calcium carbonate. The proportion of the reflecting layer is 75 percent of PET resin, the intrinsic viscosity is 0.68dL/g, 15 percent of polymethylpentene and 10 percent of titanium dioxide. The thickness of the surface layer anti-adsorption anti-scratch layer accounts for 18 percent of the total thickness, the thickness of the structural layer accounts for 82 percent of the total thickness, the surface roughness Ra (mum) is 0.42 to 0.47μm, the reflectivity is 96.6 to 98.6 percent, and the density is 0.74 to 0.9g/cm3And no scratch is visible to naked eyes after the scratch test.
10. The method for preparing the anti-adsorption and anti-scratch reflective film according to claim 3, wherein the method comprises the following steps:
(1) and (3) granulation: uniformly mixing polyester resin and inorganic particles, and carrying out twin-screw mixing extrusion granulation to obtain an adsorption-resistant scratch-resistant layer master batch, wherein the temperature of an extruder is 250-270 ℃; and (3) uniformly mixing the polyester resin, the incompatible resin and the inorganic particles, and carrying out double-screw mixing granulation to obtain the master batch of the intermediate reflecting layer. The granulation process of the surface layer anti-adsorption scratch-resistant layer is the same as that of the middle reflecting layer.
(2) Casting a sheet: respectively adding the polyester resin and master batches of the surface layer anti-adsorption scratch-resistant layer into an extruder according to the proportion, wherein the temperature of the extruder is 260-280 ℃; and adding the polyester resin and the master batch of the middle reflecting layer into an extruder according to the proportion to perform three-layer co-extrusion melting plasticization and tape casting to form a three-layer structure.
(3) Stretching to form a film: and longitudinally stretching, transversely stretching and heat setting the casting sheet, wherein the longitudinal stretching temperature is 70-85 ℃, the transverse stretching temperature is 95-110 ℃, and the heat setting temperature is 210-220 ℃ to obtain the anti-adsorption anti-scratch reflecting film with good weather resistance and good reflectivity. Wherein during the stretching the incompatible resin forms a cellular structure in the first structural layer. And finally, winding the anti-adsorption and anti-scratch reflection film into a core for packaging to obtain the finished product of the anti-adsorption and anti-scratch reflection film.
CN201810963768.7A 2018-08-17 2018-08-17 Anti-adsorption anti-scratch reflective film and preparation method thereof Withdrawn CN110834439A (en)

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CN114987023A (en) * 2022-06-23 2022-09-02 常州百佳年代薄膜科技股份有限公司 High-insulation PET alloy film and preparation process thereof

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Publication number Priority date Publication date Assignee Title
CN104614792A (en) * 2015-01-26 2015-05-13 宁波长阳科技有限公司 Anti-scraping reflector plate and preparation method thereof
JP2017181693A (en) * 2016-03-29 2017-10-05 東ソー株式会社 Antireflection film

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104614792A (en) * 2015-01-26 2015-05-13 宁波长阳科技有限公司 Anti-scraping reflector plate and preparation method thereof
JP2017181693A (en) * 2016-03-29 2017-10-05 東ソー株式会社 Antireflection film

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114987023A (en) * 2022-06-23 2022-09-02 常州百佳年代薄膜科技股份有限公司 High-insulation PET alloy film and preparation process thereof
CN114987023B (en) * 2022-06-23 2023-08-29 常州百佳年代薄膜科技股份有限公司 High-insulation PET alloy film and preparation process thereof

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