JPS62500778A - solar control window film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Solar aIIll string film shakulto”=presentation 1, 1 and 2 tatami mats The present invention relates to a window film, and more specifically, the present invention relates to a window film, and more specifically, to a window film used for changing the calendar of automobile windows. This relates to a solar control film.

2. ■ Mayu J and Tsui 11gL plate Automotive window films, i.e., allow relatively little light to pass through above the line of sight. Dyed and driven The vehicle has a film that gradually becomes clearer below the line of sight of the person or passenger. Window films were used in the first technology, laminated windshields. This is Ann U.S. Patent Nos. 2.609.2130, 2, 636.420 and 2 ．． 639.687 It was the subject of the bow. This film is coated with suitable dyes during predetermined control. It was soaked for only 11 hours, resulting in a gradient from sun to light (below: This film is sandwiched between glass plates to create a safe windshield. It was done.

Furthermore, as Iυ approaches, polymeric films useful for retrofitting existing car windows will be available for use in automobiles. It was introduced as an aftermarket product.

For example, U.S. Patent Nos. 3,775,226 and 3.8'll, 486 In the issue, “Wildloff discusses in detail the modified window film of the prior art (6) and also Coalescing Sea 1-1 includes vapor deposited aluminum overcoat, protective polymer coating and pressure sensitive coating. A typical prior art solar control film is described. This pressure sensitive coating is The presence of the anti-stick agent makes it difficult to remove the film even during storage and when it is removed from windows etc. t is rendered inactive. Wildloff has a moisture-permeable polymer layer, an adhesive layer, and a vapor-deposited aluminum layer. 3 shows the lamination order of the polymer layer and the second moisture-permeable polymer layer. aluminum layer These layers are optically bright and transparent except for

The polymer layer is made of polyester such as polyethylene terephthalate. Said The vapor-deposited aluminum layer is then deposited on the polymer layer to form a uniform metal layer with a high degree of resistance. form taste. Formed by vacuum evaporation method. The polymer layer has a thickness of /4 to 1 mil ( 6 to 25 μrrL), preferably 1/2 mil (13 μm).

The vapor-deposited aluminum has a thickness that does not disturb 300 angstroms. It is characterized by a light transmittance of 5 to 60%. 0.1-0.3 mil (2 , 5 to 8μ7+1).

Wildroff uses polyester as the preferred transparent polymer film for this laminate. Discloses biaxially oriented polyethylene terephthalate. Appropriate Other polymers that can be made into films include polyvinyl fluoride and polyvinylidene fluoride. , polycarbonate, polystyrene, borimedyl, methacrylate, polyamide In addition to esters such as Antioxidant stabilizers can also be included, if desired. The film was essentially a low grade film. Polymers of the upper suspension body consisting of alkylene monomer, i.e. acrylonitrile, polyethylene , polypropylene and polyacrylonitrile. wild In ['F's special selection No. 3,891,486 +=, a coloring agent, preferably a dye, is used. It is further specified that it may be mixed into the adhesive layer.

The adhesive layer of [Wild]] is made of thermosetting FT polymer or acrylic with ketone and (It is molded from a solution dissolved in alcohol. This solution is used to mold the final product.) was added to the clear film before overlapping the two combined films. It is preferable that For example, polyester is H1/lar, acrylic is methyl and/or ethyl methacrylate, the key is methylethyl, The alcohol is toluene.

1 Quildroff, U.S. Pat. No. 3,956,559, The frame has a nice-looking soft gray color for excellent visibility (this The color is the natural color of the aluminum on the film if you look through the film; When you look at the film, the impression is that it resembles a mirror). In other specific examples The polyester layer is made of terephthalate impregnated with a fade-resistant azo dye. It is stated that a polyethylene layer is sufficient.

Berger's U.S. Patent No. 4,095,013 and Wild 0F's U.S.-Russian Special Edition No. 3, No. 949.134 indicates the use of a tacky adhesive.

The prior art method of coating metals onto polymeric films was vacuum coating; This is because the method is quick, reliable, and inexpensive. certain types of metal coatings In this case, a less expensive sputtering method is used. For the purpose of this application, Vacuum coating other than taring is referred to as conventional vacuum coating.

Applicants do not believe that the invention has been used in the public domain, known or described in the literature prior to the present invention. I don't know about that. The present invention is to apply a second polymer portion to a conventional vacuum coating. dyeing the polymer film by vignette metallization to a higher Fi'Q degree; , the two flood foils were positioned outwardly relative to the interior of the vehicle and the dye layer. The step of laminating the metal layer to form a highly concentrated metallized composite that does not glare The purpose of this paper is to teach the effects that can be obtained for use in windows.

In the modified automotive film industry, traditional thinking has been that traditional vacuum coating methods Composite films obtained by metallization could not be used in automobiles. The reason is metallization Surfaces facing outward can create undesirable glare for people outside the vehicle. Also, pointing a metalized surface toward the interior of a car can create a dangerous glare for people inside the car. This is because it produces a mirror effect. Therefore, considering the glare factor, It is considered necessary to limit the concentration of the metal layer on the film to a very low υ1. Ta. Therefore, in the conventional technology, metal is placed on the inside of the car at a very low concentration. It was covered with water.

The idea and structure of conventional technology is that it is difficult to effectively vacuum metalize a conventional polymer film. , the metal layer has an unacceptably high anti-Q due to its opacity to the transmission of visible light. 1ll rate.

Since 1981, further constraints have been imposed on the permissible value of the anti)1 rate [v[5c20] Visible light reflectance of 35% or more is prohibited.

VESC is a state safety agency and industry whose association is dedicated to highway safety. It is a voluntary organization of The members of this organization include all states in the United States. standards have become regular law in many states. Composite film is made using traditional vacuum AM technology When using , it is not possible to make it compatible with a reflection suppressing surface with a transmittance of 45% or less. Can not. However, in some cases, foreign metals have been successfully sputtered. . However, sputtering is a much more expensive method.

In the prior art, for example, the light transmission is 10%, which is about 20 to 30%. I Traditionally, composite films with consistently low light transmittance and reflectance of 35% or less The method is to form a vacuum metal coating on the surface of the metal. How does the invention achieve this objective? It is about watermelon.

--L Are the terms used defined as follows? i, that is, ``high metal concentration 1 is about 45% or more.'' Means low light transmission and unacceptable glare.

"Low metal concentration" means a light transmission of about 45% or greater.

[Conventional Vacuum Coating of Metals] includes resistive and inductive vacuum metallization and sputtering. except.

"Unacceptable reflectance" means greater than or equal to about 35%.

[PETJ means polyethylene terephthalate.

"Dye" includes common dyes, pigments and transparent metal oxides unless the circumstances require. nothing.

"Vinet 1-" is a layer of any substance whose thickness decreases from large to small; The visual effect from the Showa era to the Ming era was created by and a metal that reflects less than about 35% of visible light is added to the first layer of the polymer in a conventional manner. Coated by blank coating method, the first layer of polymer is then coated with a light transmittance of more than 35%. By bonding to the second dyed polymer layer, the upper part of the line of sight of the driver A composite film having a light transmission value of about 35% or less and a reflectance of about 35% or less is available. It means being beaten. In one preferred embodiment, the point of maximum concentration is at the window. It is located at the top and its concentration gradually decreases in a vignette style to the low concentration area below the line of sight.

A further unexpected advantage is that the metal is located outside of the most useful areas of the dye. This means that the metal can be exposed to the plastic film at that location. It serves to protect the material from fading and fading.

Therefore, it is important to apply plastic snack film to automobile windows as a modification. progress is achieved. A view of the transmission of light through the top part of the window above the passenger's line of sight. The net can be greatly reduced by incorporating metal layers/using composites.

This metal layer is added by conventional vacuum coating and is not acceptable unless it is made into a composite material. If the value is 1, the result will be 01.

Simply put, the present invention has a high 111 degree angle on its widest surface, but a low reflectivity. The first one contains a layer of metal! ■Has a combined film layer and a coating of dye on the first surface means for laminating the film layer with a second polymer layer in which the film is impregnated with a dye; It is intended to provide. Dyes can be applied by coating, dipping, spraying and printing. Although it can be applied by any means known in the art, coatings are currently preferred. metal The layering is done by conventional vacuum metallization.

In a more particular embodiment, the present invention provides dye-impregnated polymers, preferably polymers. High-quality polyethylene phthalate adhesive laminated to a second sheet of polyethylene phthalate using conventional vacuum coating. an oriented first sheet supporting a vignette layer of metal with 41 concentration points; It depends.

Yet in even more specific embodiments, e.g. 85:15 nickel chromium A first sheet of P[T coated with a layer of alloy by conventional vacuum coating is coated with a dye. A layer of 'vA' is applied to the PUT film. Or dyes or pigments in polyester Alternatively, a lamination adhesive impregnated with the combination can be coated. Good for adhesive, Q suitable Any dye or pigment can be used. Examples of dyes are known in the art and commercially available. good Finely pulverized carbon bran (non-7), which appears gray when using [41]. The glue is impregnated with polynisdel adhesive.

The laminate may have a hard coating, i.e., any of the types already known in the art. Finished by applying a scratch resistant coating. Laminates can be used with all known connections. It is prepared to be attached to the window of a motor vehicle by means of an attached attachment means.

The reversal of the specific example of film described above falls within the numerical limits specified above and is automatic. Glued to the inside surface of the car window and further bonded to the outer metal layer (relative to the inside of the car) Together they are positioned to dye to create an automotive solar control window structure.

7. The presently preferred embodiments will now be described with reference to the drawings which will be helpful in understanding them.

FIG. 1 is a cross-sectional view of a composite made based on the principles of the present invention.

Figure 2 shows a section of the laminate of Figure 1 applied to a car window to create a solar control structure. Surface diagram.

FIG. 3 shows a modified example of the structure shown in FIG. 2.

FIG. 1 shows, in cross-section, one presently preferred embodiment of the invention. The code 10 is A dye-impregnated film 12 made of oriented polyethylene terephthalate is coated with a dye-impregnated film 12. A laminate including a scratch resistant coating 11 is generally shown. Film 12 is suitable for this purpose. It is made by soaking it in the desired color of several dyes known to the industry to It is a basic body. The film, which was dyed in four colors in this way, was produced in Martin, Virginia. UV Stabilized 7 from Svir's 7-Bun Bu[] Losing Incoholated It is sold as 0% light transmission gray. This Martin film contains dye throughout. It is a soaked film.

[-1-01 mil (2.5 μm) layer of Schiff 6R36 laminated adhesive layer 14 is dyed. The polyester film layer 12 is bonded to the 48 gauge terephthalate layer 18. The layer contains about 140 Å, which can vary by ±20 Å using conventional vacuum coating. Guess 1 - Vinet 11 of a nickel-chromium alloy whose initial thickness of ROHM is reduced by Hli Layer 16 is coated. , surprisingly, the undesirable visible light of the stabilizing layer 16 The effect as a barrier on metallic No high visible light reflection and no retention.

The currently preferred coalescing film for metallization is Imbellial Chemical Can. Bunny is quotient 1 [under 1cI-4221, American Hoygies is quotient 45 "l1ostaphan" is sold under 5000J.Polymer film Dyeing and metallizing method, suitable dye F1 and metal, and film filter Adhesive or other means of bonding the film to the window glass and are all well known in the art, and the elements themselves may not be claimed as invention. It's not. However, the combination of those elements with other elements described and claimed in this application The six elements in total constitute the present invention, and therefore the present invention should not be considered as a whole. It is something that can be observed.

The currently preferred laminating adhesive for bonding layers 12.48 is commercially available from DuPont. Under the mark rEDlam, there is also the product number r of Morton Chemical Company. It is a polyester resin manufactured under the trade name 7611-3GJ.

The film 18 is applied until the laminate 10 is ready to be applied to the automobile window glass 24. is protected by a release liner 22. When attaching the laminate 10 to the window glass, Peel off the release liner 22 and attach the laminate 10 to a 0.25 mil (6 μm rL) thick adhesive layer. 20 is attached to the glass 24. Acrylic or polyester wood IIFi type Either can be used as a mounting adhesive. At present, the preferred resin is [Na- ona180-1057J. Another useful adhesive is the adhesive [R^- It is 11591.

Turning to FIG. 2, this figure shows that the release liner 22 has been removed and the laminate 10 has been removed from the adhesive tape. It is shown bonded to the window glass 24 by 1η20.

In one alternative embodiment, an oil-soluble agent suitable for and compatible with the adhesive used is used. Any dye can be mixed into the adhesive 14.

In this modified example, the dyed adhesive performs dye petrification, so the film itself is dyed. There's no need to. Referring to FIG. It can be seen that the dye v1 is dispersed in the lamination adhesive i48. Modification of Figure 3 In the example, a dye-impregnated adhesive layer 14a is attached to the polymer layer 12 using a gravure film dedicated to Hayer. Cover with cylinder.

A preferred embodiment of the metal layer for all composite films is shown in FIG.

Metal layer [a1. becomes thinner from the high concentration area 113b to the low concentration area. In both Figures 2 and 3, the arrow points to the outside of the car. suitable for Hfi the film inside and dye the metal as you can see from the drawing. 8 pieces on the outside relative to the colored film 12 In constructing the presently preferred embodiment, [Martin Bu]] 92 or 48 gauge manufactured by Sessing Incorporated The dyed layer 12, which is a roll of dyed P [170% light transmittance film] harden/,=A scratch and abrasion resistant plastics such as Luganoborisiloquiline compounds. Covering of stick material Overturned.

A second roll of untreated 48 gauge P [T Get it from here. The manufacturing name of this film is RLCI 4424. It is shi. This 48 gauge roll was then coated using conventional vacuum coating techniques known in the art. , Zunawara, one side nick-lucked by inductive and resistive metallization by conventional methods Prepare by setting up a vignette of the ROM.

The polyester film is metallized into a band that changes from 13 to light, and this band is It is then cut to create the desired vignette.

For example, the darkest part of the center is approximately Make it 35% light transmittance and thin one side to 100% light transmittance. Make it online. The combined width of the bands is approximately 10 inches (254 am). Money The coated film is then uniformly impregnated with a dye with a transmittance of 70%. laminated to polyethylene film. To accommodate various light transmission densities, Pigment coating using variable etched gravure cylinders for coating various molds. The thickness of the pigmented adhesive can be varied while keeping the concentration constant.

Colored adhesive values are approximately 10 inches from 50% light transmission in the narrowest band. The light transmission decreases to 70% at a bandwidth of (254 gm).

As a result, it is understood that the laminating adhesive may contain color in modified embodiments. The resulting metallized and dyed films are then laminated. then has a release liner Cover with mounting adhesive. Next, cut the finished composite down the center and remove the bottom part from the old capital. Shape the two rolls with a given desired light transmission gradient (from the center to the sides when cutting) until to be accomplished. Typically 5 inches of 40 inch (1016 m+) wide polymer composite sheet (127g+) A node with an allowable range of average light transmittance of 10% to 30% metallized with a band that is preferably about 22% thick and 1/2 inch ( 1.3aa) has a slope of about 20 to 70% from the center to the outside. metallize with a band that is about 70% beyond the outside of the metallization. roll, film is line of sight VJ is cut out from a car window so that it can be positioned in the part that covers the dark part of the upper window. be placed. The area of the film below the driver's line of sight has a light transmission of 10%. B Discard the extra width from the roll.

Tue-151-3 48 gauge IcI 442 polyester film at the darkest point in the center The section has a light transmission of 35% and covers an area of 5 inches (127, M) on both sides. In a thin band with nets on both sides to achieve 100% transmittance, 8 It was metallized with a nickel-RI1com alloy with a composition ratio of 5:15. Body width is approximately 1 It was 0 inches. Martin Pro is available from Think Incorporated. Uniformly dye impregnated 48 gauge terephthalate polyester with 70% transmittance A 4 micron (μ) thick hard coating is applied to the tyrene film using gravure coating. Ta.

These two films are then laminated into a bean, with the hard film placed on one of the outer surfaces. A 150 gauge composite was formed. The non-hard coated surface is then silicon coated. Attach pressure sensitive attachment 1 to the protective silicone liner with the opposite side facing the adhesive. coated with.

The entire composite was then cut in half, thereby cutting off one piece in the center of the band. same 20 inches (510I) with both edges trimmed and vignette right on one edge. l! R) is expected to produce a finished product.

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Claims (23)

[Claims] (1) A flexible solar control composite sheet for use on the inner surface of automobile windows, (a) having a metal layer coated on one of the surfaces by a conventional vacuum coating, the metal layer At least a portion of a first polymer layer having a concentration sufficient to reduce the concentration to a value of 35% or less; (b) a first surface is bonded to the first polymer layer and has a light transmission of about 35% to 70%; a dye-treated layer of a second polymer having a (c) means for adhering the first polymer layer to the vehicle window; (d) A solar control composite sheet comprising a UV absorber. (2) The compound of item 1, characterized in that the metal layer is coated with a vignette pattern. Combined sheet. (3) The means for joining the first and second polymer layers is a lamination adhesive. Composite sheet of item 1 as a sign. (4) The compound according to item 1, wherein the metal is an alloy of nickel and chromium. Combined sheet. (5) The metal is an 85:15 nickel-chromium alloy. Composite sheet of 4 terms. (6) The composite sheet according to item 1, wherein the metal is stainless steel. (7) The composite sheet according to item 1, wherein the second layer is impregnated with a dye. . (8) Item 1, wherein the layer is laminated with an adhesive impregnated with a dye. composite sheet. (9) Where the composite vignette has a light transmittance of 10-30% and a light transmittance of 20-70%. Item 2, characterized in that it has a light transmittance point and a reflectance of about 35% or less. composite sheet. (10) The vignette is caused by cooperation with various thicknesses and concentrations of the metal and dye layers. 6. The composite sheet according to item 5, characterized in that it is produced by: (11) (a) a window having an interior and exterior surface; (b) a composite solar sheet; The sheet is (i) a first polymer layer having a first surface and a second surface facing the window; (ii) means for adhering said first surface to an inner surface of said window; and (iii) a conventional vacuum. The coating covers one side of the first layer, at least a portion of which is visible to the driver. Above the line and at the top of the window, a veneer with a high density spot and a reflectance value of about 35% or less (iv) a first metal layer facing a second surface of the first layer; a surface, said second surface, a light transmittance of about 70%, and a dye associated with said second layer. and (v) means for joining said two layers. A solar-controlled window unit for automobiles characterized by comprising: (12) The above metals are stainless steel, aluminum oxide and nickel-chromium alloys. 11. The window unit according to item 11, characterized in that the window unit is selected from gold. (13) The dye means is a dye impregnated into the second layer. Window unit in Section 11. (14) A window unit according to clause 11, characterized in that said dye means is within a laminating adhesive. t. (15) The metal is an 85:15 alloy of nickel and chromium. Window unit of Section 12. (16) (a) Select from stainless steel, aluminum oxide and nickel-chromium alloy. A metallic vignette layer having a light transmittance of about 45% or less and a reflectance of about 35% or less. coating the first polymer layer by conventional vacuum coating; (b) the first layer was treated with a second dyeing having a light transmission value of about 35% to 70%; bonding the layers to form a composite; (c) contacting the composite with the inner surface of the vehicle window with the first layer facing the vehicle window; 1. A method of manufacturing an automobile window unit, the method comprising the step of: (17) Item 16, wherein the metal layer is a nickel-chromium alloy. Method. (18) The metal is an 85:15 nickel-chromium alloy. The method of Section 14. (19) The light transmittance of the composite is about 45% or less, and the reflectance value is about 35% or less. 17. The method according to claim 16, characterized in that: (20) A UV light absorber and a hard coating layer are further provided on the non-bonding surface of the second layer. The method of clause 16, characterized in that: (21) The first polymer layer is coated with a conventional vacuum coating and the light transmittance value is about 45%. and a metal vignette layer having a portion having a light reflectance value of about 35% or less; a means for adhering the composite to a vehicle window, the first layer comprising about 35% to 70% bonded to a second dye-treated polymer layer having a light transmittance; characterized in that said metal layer is positioned outwardly relative to said dye-treated layer. Visible light controlled laminated film used for automobile windows. (22) The composite article of item 1, characterized in that it is combined with an automobile window. (23) further comprising a UV light absorber and a hard coating that protects the exposed surface of the second layer; The compound according to item 2, characterized in that: