JP4301156B2 - A manufacturing method of a laminated molded product, a composite sheet-like material using the same, and a manufacturing method thereof. - Google Patents

Description

The present invention has a low visible light transmittance that makes glare feel, and a method for producing a laminated molded product that can reduce the stress received by the eye by receiving light, such as sunglasses, goggles, a lens with a degree of myopia, Semi-finished lens for myopia, bifocal lens for presbyopia,
Trifocal lens, progressive lens, photochromic lens, and a method for producing a laminated molded product. Also, a composite sheet-like product incorporating a polarizer to which the production method is applied, polarized sunglasses, polarized goggles, polarized semi-finished lens for myopia, The present invention relates to a polarizing lens, a polarizing progressive lens, a bifocal lens for polarized presbyopia, and a spectacle lens and spectacles of a polarized photochromic lens.

An antireflection film is formed on a spectacle lens in order to suppress a decrease in light transmittance of the lens due to reflection of visible light by the lens. Since the spectacle lens provided with the antireflection film has an increased light transmittance, the brightness of light that can be recognized can be increased. Sun rays contain rays that are harmful to the eyes and make the eyes feel dazzling. Sunglasses are used to adjust the transmission of sunlight, and are made for the purpose of suppressing the transmittance near the center wavelength in order to suppress glare. However, in general sunglasses, when the sunglasses are used in an environment with a small amount of light such as twilight, the field of view generally becomes dark, which may hinder the visual recognition of objects in the outside world. That is, as a result of trying to suppress glare, the total amount of transmitted light may be excessively reduced, and the object may not be sufficiently visible.

As sunglasses that exhibit an anti-glare effect while maintaining overall brightness, sunglasses that absorb light in the vicinity of 590 nm by containing neodymium or didymium in glass are known. However, from the viewpoint of eye protection, it is preferable to use synthetic resin such as plastic, particularly polycarbonate with high impact resistance, as the material of the glasses rather than glass. In particular, none satisfy the demand for resins made of polycarbonate or a thermoplastic resin similar to them. Japanese Patent Publication No. 53-39910 discloses a spectacle lens that absorbs a wide range of light having a good visibility of 550 to 600 nm. However, when polycarbonate is used, it is difficult to dye.

In recent years, due to advances in lens processing technology, metal-deposited lenses have been developed that are capable of reflecting visible light by attaching a metal material to the outer surface of the lens by vacuum deposition. Glossy metal is very popular due to its decorativeness. However, this metal vapor-deposited lens has a problem in that the metal adhesion layer on the surface is easily scraped off due to unexpected contact or the like and the wear resistance is poor, so that sufficient care must be taken in handling. Therefore, in order to protect the surface of the metal adhesion layer, there has been a technique (dip method) in which the lens is immersed and adhered to the molten resin material. According to this technique, the spread imbalance is caused by the viscosity of the resin material. Does not adhere uniformly to the surface, inevitably uneven adhesion occurs on the molded product, and a rainbow pattern appears due to light interference due to the thickness difference, giving an odd feeling when viewed from the opposite party There was a problem that it looked bad. (Patent Document 1)

Moreover, a polarizing lens using glass has been manufactured for a long time, and this is a method in which a polarizing film is pressure-bonded and bonded using an adhesive between two glass lenses. However, in recent years, lenses made of various plastic materials have been used in place of polarized lenses using glass in order to reduce the weight of eyeglasses and to protect the eyes from damage.

As a manufacturing method of such plastic lens,
(1) A spherically preliminarily formed polarizing film is mounted in a gap formed by a mold having a concave surface and a convex surface, and CR-39 (a copolymer of diethylene glycol and bisallyl carbonate, for example) is installed on both sides thereof. A manufacturing method of a polarizing lens by a so-called casting method in which a polymerizable plastic such as PPG's thermosetting molding resin (trade name) is injected and polymerized (Patent Document 2).
(2) A method for producing a polarizing lens by a so-called press molding method in which thermoplastic resins having different thicknesses are laminated and pressed on both surfaces of a polarizing thin film (Patent Document 3).
(3) A method of manufacturing a polarizing plastic lens using a polarizing sheet obtained by directly bonding a polarizing element to a fusible material (Patent Document 4).
(4) A method of producing a polarizing polycarbonate lens by laminating polycarbonate films or sheets on both sides of a polarizing thin film, producing a laminate having a thickness of 0.5 to 2.5 mm, and pressurizing and thermoforming the laminate. (Patent Document 5).
Etc. are known.

Because the polarizing film and polarizing sheet used in any of the previous paragraphs are special, it is difficult for everyone to obtain easily and it is difficult to obtain industrial advantages with a limited number of specific companies. Limited to those who are financially wealthy.
Cellulose triacetate polarizing sheets, which are relatively widely available, are manufactured for liquid crystal displays (LCDs), and cellulose triacetate polarizing sheets have several drawbacks for producing polarizing optical lenses for spectacles. It was difficult to produce a polarizing optical lens using such a sheet. The first problem is that when a polarizing optical lens for spectacles consisting of a concave and convex surface is manufactured using a cellulose triacetate polarizing sheet by an injection molding method, the material of the concave and convex surfaces is not the same. It is difficult to use the strengthening liquid used in acrylic lenses or polycarbonate lenses, which are generally manufactured, and to adhere to different materials with uneven surfaces at the same time, avoiding such problems. For this purpose, a method generally used is a method in which a top coat is further provided on a primer coat layer that is in close contact with the uneven surface. However, this method frequently causes defects such as dust and dust when dipping twice, resulting in a great economic burden. Even if the optimal strengthening liquid that adheres closely to both the objective and eyepiece materials is discovered, the economic burden from the liquid unit price of 10 to 20 times the liquid unit price used for acrylic lenses or polycarbonate lenses is increased. However, it is much shorter than the conventional one, so that there is a problem of forcing economic loss. Because of these problems, the development of spectacle lenses has been remarkably stopped in recent years as new molding resins are being developed every day.

In order to manufacture a polarizing optical lens for spectacles having a convex objective surface and a concave eyepiece surface, the present inventor has one surface of a cellulose triacetate polarizing sheet coated with an adhesive layer on one side of a commercially available easy-to-use surface. The adhesive layer is newly applied and processed, and various resinous sheets are pasted to make a laminated sheet, and this laminated sheet is hot pressed into a shape close to the outer shape of the target lens mold. Inserting the sheet into the mold cavity of the injection molding machine so that the adhesive layer is exposed, and injection molding the optical resin of the same material as the resinous sheet, the polarization optical lens of the same material The manufacturing method characterized by being able to manufacture various polarizing lenses using a kind of easily available polarizing sheet by having obtained the above was proposed previously (patent documents 6 and 7).

JP 2001-350122 A Japanese Patent Publication No.53-29711 Japanese Patent Publication No. 50-3656 Japanese Examined Patent Publication No. 61-56090 Japanese Examined Patent Publication No. 7-94154 Japanese Patent Application No. 2004-309332 PCT-JP03-12688

In the case of a lens in which an antireflection film is formed, the perceived glare is increased because the transmittance of diffusely reflected light that causes glare to be felt, particularly short wavelength light that easily diffusely reflects, is also increased. It will be. In the suburbs, the irregularly reflected light is blocked to some extent, but it is particularly dazzling in urban areas where there are few objects that block the diffusely reflected light.

  Moreover, since light with a short wavelength is high energy light, it is easy to give stress to eyes. Even in the absence of natural light emitted from the sun, short-wavelength light is incident on the eyes by an illuminator installed indoors, and stress is given to the eyes regardless of day or night. Furthermore, image display devices such as liquid crystal displays and cathode ray tubes have advanced to higher brightness, and the stress received by the eyes has been steadily increasing as the amount of light emitted from the devices has increased. Therefore, the problem of an increase in the number of people who complain of eye strain has arisen. The stress experienced by the eye is a serious problem particularly for elderly people whose eyes have declined due to aging, and for eye disease patients having symptoms such as cataracts and glaucoma.

  Visible light having a wavelength of 500 nm or less makes the viewer feel dazzling particularly by irregular reflection. In this wavelength range, the shorter the wavelength, the more light is applied to the human eye. A lens having a low transmittance of light having a wavelength of 500 nm or less usually becomes a lens having a low transmittance of visible light having a wavelength exceeding 500 nm. When the outside world is seen through this lens, the pupil of the eye opens and the amount of light entering the eye increases. That is, the amount of short-wavelength visible light that passes through the lens decreases, but the amount of short-wavelength visible light that enters the eye increases.

  In view of the circumstances as described above, it is an object of the present invention to provide a method for producing a laminated molded article having a particularly low light transmittance for short-wavelength visible light of 500 nm or less, and a composite sheet-like article to which they are applied and a method for producing the same. And

  The present inventor has formed a deposited film layer in which a metal material is deposited in a thin film by vacuum deposition on one of the thermoplastic resin films using a specific metal and a metal oxide, and an adhesive is applied to the deposited film layer. After the film is pre-molded into a lens shape by hot press processing, this molded product is inserted into the inner surface of the mold, and a lens molding resin material that is fused with the adhesive layer of the film is injected. Established a manufacturing method for laminated moldings by injection molding.

As a specific metal and metal oxide, a vapor-deposited film layer selected from one of chromium, chromium oxide, a mixture of chromium and chromium oxide, silicon dioxide, zircon dioxide, titanium dioxide, alumina and gold alone or in combination is used. In particular, a mixture of chromium and chromium oxide can be preferably used.

By being able to form the above-mentioned mixture of chromium and chromium oxide as a deposited film layer of the present proposal, the wavelength of light having a wavelength of 600 nm or less decreases as the wavelength of light becomes shorter, and the wavelength of 500 nm or less that makes the user feel dazzling. The light transmittance is greatly reduced. A laminated molded product characterized in that the luminous transmittance defined in JIS T 7331 decreases as the visible light transmittance of 75% or more and the wavelength of 600 nm or less becomes light of a short wavelength can be obtained. The visible light transmittance at a wavelength of 500 nm or less of the laminated molded product is preferably 80% or less.

The thermoplastic resin of the thermoplastic resin film used in this proposal includes polycarbonate, polystyrene, homopolymers such as methyl methacrylate and cyclohexyl methacrylate, acrylics including copolymers, vinyl chloride, polystyrene and methyl methacrylate. , Acrylonitrile / styrene, poly-4-methylpentene-1, main chain hydrocarbons with andamantane and cyclopentane rings in the main chain, polyesters with fluorene groups in the side chain, polyamides such as transparent nylon, polyurethane One type can be selected from the group of cellulose-based cellulose resins such as acetylcellulose and propylcellulose.

In the present plan, an adhesive and a bonding method for performing a coating process after forming a vapor deposition film on one of the thermoplastic resin films will be described below. As a method of applying a vapor deposition film on one of the thermoplastic resin films, an average molecular weight of 10,000 is formed by forming a vapor deposition film on one of the thermoplastic resin films and then using a gravure coating method, an offset coating method, or the like. From the above, there is a two-part curable adhesive in which a polyisocyanate is blended as a crosslinking curing agent in a polyol mainly composed of a polyester urethane resin of 200,000 or less, or a polyether urethane resin, or a polyester polyether urethane resin. The coated material can be suitably selected and used for convenience.

By applying the above-described knowledge, a dimmable dye can be used in the above-mentioned laminated molded product as another laminated molded product that can be obtained, and a light control function can be imparted to the laminated molded product of the present invention.

The dimming dye used in the present invention is not particularly limited as long as it is generally used, such as spiropyran, naphthopyran, furan, spirooxazine, fulgide, and chromene. High color development speed, hue after removal of ultraviolet rays is as nearly colorless as possible, with fast decoloring speed, and short- and long-term durability under heat, light, humidity and other processing, practical, and storage conditions Those that are good in terms of surface are preferred. Since brown and gray are generally preferred as the hue after color development, usually use multiple dimmable materials at the same time, and determine the usage ratio and amount of each material so that the desired hue is obtained, by hand blending method Mix in molding resin.

In addition, other technical means for imparting a light control function to the laminate molded product of the present invention are from the group of light control pigments spiropyran-based, naphthopyran-based, furan-based, spirooxazine-based, fulgide-based, chromene-based, etc. One kind of convenience is blended and added by an addition method such as a kneading method of a light material, or a post-processing method such as a dyeing method or a coating method.

Moreover, the method to provide the power for nearsighted eyes and the power for presbyopia to the laminated molding of this invention is demonstrated below. By using a mold such as an burgundy all-round mold, an object having a diameter of 60 to 98 mmφ, a radius of curvature of 60 to 87 mm, and a cavity thickness of 3 mm to 18 mm can be suitably used as a method for imparting myopia power. A spherical surface is adopted as the refractive surface of the first surface of the cavity (the surface opposite to the eye in the wearing state, that is, the front refractive surface) for ease of processing. In addition to the spherical surface, a toric surface is also used for correcting the astigmatism and the like as the second refracting surface (the eye-side surface or the rear refracting surface in the wearing state). Hereinafter, a lens in which a spherical surface is employed for the first surface is referred to as a spherical lens, and a lens in which an aspheric surface is employed for the first surface is referred to as an aspheric lens.
In general, the refractive power of a lens is expressed in units of diopter (hereinafter referred to as “D”), and the refractive power (surface refractive power) on the surface of the lens is the curvature p of the surface (unit is m ⁻¹ : radius of curvature R). = 1 / p) and the refractive index n of the lens material, the following equation (1) is defined. Surface refractive power = (n−1) × p = (n−1) / R (1) Note that the refractive power of the first surface of the lens is particularly called a base curve. Hereinafter, the curvature corresponding to the base curve is referred to as the base curve curvature. The power for myopia is mainly determined by the refractive power of the first surface and the refractive power of the second surface. For this reason, depending on the combination of the two refractive powers, various base curve values can be obtained to obtain one myopic power.

The method for imparting presbyopia power to the laminated molded product of the present invention includes a cavity having an inner surface that is concave and an outer surface that is convex, and the cavity has various shapes. A design selected from the group of clip top type, seamless clip top type, ideal type, and progressive type can be conveniently selected and used. The outer surface of the small ball portion is particularly preferably an aspherical surface. The outer surface of the small ball portion may be an aspherical surface in which a cross section in a normal direction passing through the center thereof is formed by a curve (preferably an ellipse) such as an ellipse, a hyperbola, a parabola, a cycloid curve, or an involute curve.

The composite sheet-like material of the present invention will be described below. The thermoplastic resin film of the present invention uses a specific metal and metal oxide to form a deposited film layer in which a metal material is deposited in a thin film by vacuum deposition on one of the thermoplastic resin films, and an adhesive is formed on the deposited film layer. Was applied to form an adhesive layer. Then, a non-adhesive layer of a cellulose triacetate polarizing plate coated with an adhesive on one side was pasted through an adhesive layer of a thermoplastic resin film to form a composite sheet. Next, after pre-molding into a lens shape by hot press processing, this molded product is inserted into the inner surface of the mold, and a resin material for lens molding that is fused to the adhesive layer is injection-molded, and the adhesive layer and lens molding The resin material for use is thermocompression-bonded.

The cellulose triacetate polarizing sheet plate specified in the present invention will be described below. The polarizing sheet specified in the present invention is a base film made of a commonly used polyvinyl alcohol film, polyvinyl acetal film, polyvinyl butyral film, and a dichroic dye having moisture and heat resistance. It is a polarizing sheet that is composed of a polarizing film obtained by dyeing and uniaxially stretching using a cellulosic cementate that has optically excellent transparency and bonded together using an adhesive. A polyester urethane resin, a polyether urethane resin, or a polyester polyether urethane resin having an average molecular weight of 10,000 or more and 200,000 or less is mainly used by a gravure coating method or an offset coating method on one side. Polyol as a cross-linking curing agent That two-component curing type adhesive blending Aneto is applied machining can be suitably conveniently selected to use.

In the present invention, the most preferred polarizing sheet has a total thickness of 0.2 mm or less, a total light transmittance of 40% or more, and a degree of polarization of 90.0% or more. The total thickness of the polarizing sheet is 0.2 mm or less. If the thickness is 0.2 mm or less, the total light transmittance can be easily maintained at 40% or more, and the material cost is the most excellent and economical. Because it is good.

The adhesive newly applied to the non-adhesive layer in the present invention will be described below. Two-component curable adhesive comprising a polyester urethane resin or polyether urethane resin having an average molecular weight of 10,000 or more and 200,000 or less, and a polyol mainly composed of a polyester polyether urethane resin and a polyisocyanate as a crosslinking curing agent. An adhesive that is fused with a desired resin sheet from the group of agents can be applied and used by a gravure coating method, an offset coating method, or the like.

The resin that can be conveniently selected as the thermoplastic resin film and lens molding resin material used in the composite sheet-like material of the present invention will be described below. Polycarbonate, polystyrene, homopolymers such as methyl methacrylate and cyclohexyl methacrylate, acrylics including copolymers, vinyl chloride, polystyrene / methyl methacrylate, acrylonitrile / styrene, poly-4-methylpentene-1, andaman Main chain hydrocarbons with a tan ring or cyclopentane ring as the main chain, polyesters with a fluorene group in the side chain, polyamides such as transparent nylon, polyurethane resins, acyl cellulose cellulose resins such as acetyl cellulose, propyl cellulose, etc. It is.

Among them, the thermoplastic resin film and the lens molding resin material resin that can be used particularly preferably in the present invention are polycarbonate resins because they have high transparency, high toughness, high heat resistance, and high refractive index. It is. A typical polycarbonate resin is polybisphenol A carbonate. In addition, 1,1′-dihydroxydiphenyl-phenylmethylmethane, 1′-dihydroxydiphenyl-diphenylmethane, 1,1′-dihydroxy-3,3′-dimethyldiphenyl-2,2-propane single polycarbonate, Polycarbonate resins such as polymerized polycarbonate and copolymerized polycarbonate with bisphenol A.

Generally, a polycarbonate resin has a drawback that birefringence tends to increase. That is, optical anisotropy due to molding distortion and local orientation tends to occur inside the molded body. Therefore, when using a polycarbonate-based resin in the present invention, it is important to prevent the formation of optical anisotropy as much as possible, and as a countermeasure, the fluidity is high and it is difficult to receive excessive shearing force during molding. It is preferable to use a resin having a relatively low degree of polymerization that hardly causes residual distortion and local orientation. In the present invention, it is particularly recommended to use a polycarbonate resin having a polymerization degree of 120 or less, more preferably a polymerization degree of 100 or less.

A method for imparting a light control function to the composite molded article of the present invention will be described below. The light control function is imparted by using a light control pigment. The kind of the light-controlling dye used in the present invention is not particularly limited as long as it is generally used, such as spiropyran, naphthopyran, furan, spirooxazine, fulgide, chromene, etc. With high color development speed, and the hue after removal of ultraviolet rays is as nearly colorless as possible, with fast decoloring speed, and short- and long-term durability under processing, practical, and storage conditions such as heat, light, and humidity Those having good properties are preferred. Since brown and gray are generally preferred as the hue after color development, usually use multiple dimming dyes at the same time, and determine the usage ratio and amount of each dye so that the desired hue is obtained. Mix in molding resin.

As another means, the light-modulating dye is blended in the thermoplastic resin film by an addition method such as a kneading method, or a post-processing method such as a dyeing method or a coating method.

  According to the present invention configured as described above, a layer formed by laminating a mixture of chromium and chromium oxide is formed on one side of a laminated molded article, a composite sheet-like article, and a thermoplastic resin film of the composite molded article. Thus, the visible light transmittance of 500 nm or less that makes the user feel dazzling is lower than the visible light transmittance that exceeds 500 nm, and the metal material constituting the deposited film layer is chromium, chromium oxide, silicon dioxide, zircon dioxide, When titanium dioxide, alumina, or gold is used alone or in combination, a laminated molded product, a sheet-like product, and a composite molded product that are excellent in antiglare properties and further reduce stress on the eyes are obtained. Further, by setting the luminous transmittance to 75% or more, a laminated molded product, a sheet-shaped product, and a composite molded product that do not interfere with nighttime use such as safe driving at night can be obtained.

  Hereinafter, the present invention will be described based on embodiments. The laminated molded product, the sheet-like product, and the composite molded product in the present embodiment are a laminated molded product, a sheet-like product, and a composite molded product in which a metal film is formed on a thermoplastic resin film.

Example 1
Description will be made based on the embodiment of the laminated molded product of the present invention.
As the thermoplastic resin film, a polycarbonate-based resin polybisphenol A carbonate film having a thickness of 0.123 mm and a degree of polymerization of 120 or less was adopted because it has high transparency, high toughness, high heat resistance, and high refractive index in this embodiment. . On the polycarbonate film specified above, a metal vapor deposition of a mixture oxide mixture CrO ₃ with a weight ratio of chromium and chromium: CrO ₃ = 4: 7 to a thickness of 5 on the surface was formed by vacuum deposition, at a thickness of 25 μm by forming the luminous transmittance JIS T 7331 to defined by that luminous transmittance of 75% or more, the metal deposition of CrO ₃ the following visible light transmittance wavelength 600nm decreases enough the short wavelength light A thermoplastic resin film having a thin reflective layer was obtained. Subsequently, a two-component curable dry laminate adhesive composed of a main agent (Polybond AY-651A) and a curing agent (Polybond AY-651C) was employed for the metal vapor-deposited thin film, which could be applied. The formulation of the adhesive is the main agent 100, the curing agent 15, and the diluent (ethyl acetate) 190 by weight ratio. It is applied with a dry laminating machine at a processing speed of 140 m / min, dried in a drying oven at a hot air temperature of 100 ° C. and a wind speed of 10 m / s, and after coating and curing, it is cured at 45 ° C. for 48 hours. A polycarbonate film was obtained.

The polycarbonate film obtained above was pressed into a lens shape by pressurizing at 120 ° C. for 2 minutes so that the adhesive layer was formed in a concave surface. Thereafter, the molded product was molded into an lens all-round mold using a lens molding machine (clamping force; injection pressure: 400 kgf / cm ² ); diameter 78 mmφ, curvature radius 84 mm, cavity thickness = 2.2 mm mold temperature; 120 ( It is mounted so that the adhesive layer is exposed in the mold (fixed and movable) (that is, the polycarbonate surface is formed on the objective side of the target lens), and the molding polycarbonate resin is set to the cylinder heater set temperature; 280 Was injection molded to obtain a polycarbonate laminate molded product. Next, the reinforcing liquid (Seiko Kasei HC-280) was dipped and dried at 120 ° C. for 2 hours to obtain the desired laminated molded product. The resulting laminate moldings, CrO ₃ where the luminous transmittance JIS T 7331 to defined by that luminous transmittance of 75% or more, reduced enough wavelength 600nm or less of the visible light transmittance is short-wavelength light It was a laminated molded product having a reflective layer of a metal vapor-deposited thin film, and was a laminated molded product that passed the standards of industry standard JIS, T-8147.

Example 2
The chromene-based dimming dye 1,3,3,5,6-pentamethylspiro [indolino-2,3 ′ [3H] Naphth (2, 1b) (1, 4) oxazine is mixed by the hand blend method, and tumbling machine (manufactured by Tori Glass Co., Ltd.) is stirred for 30 minutes. It was prepared in a film form by the resin extrusion molding.

A polycarbonate film having a film thickness of 123 μm prepared using a polycarbonate resin having an average degree of polymerization of about 100 was coated with an adhesive in the same manner as in Example 1 to obtain a light-modulating dye-containing film.

The polycarbonate film obtained above was pressed into a lens shape by pressing at 80 degrees for 6 minutes with a hot press mold so that the adhesive layer was formed in a concave surface. After that, the molded product was molded into an lens all-round mold using a lens molding machine (clamping force; injection pressure: 400 kgf / cm ² ); diameter 78 mmφ, curvature radius 84 mm, cavity thickness = 2.2 mm mold temperature; 85 ( It is mounted so that the adhesive layer is exposed in the mold (fixed and movable) (that is, the polycarbonate surface is formed on the objective side of the target lens), and the molding polycarbonate resin is set to the cylinder heater set temperature; 265 Was injection molded to obtain a polycarbonate laminate molded product. Next, the reinforcing liquid (Seiko Kasei HC-280) was dipped and dried at 100 ° C. for 4 hours to obtain the desired laminated molded product. The resulting laminated molded article has a luminous transmittance of 75% or more and a visible light transmittance of a wavelength of 600 nm or less as defined in JIS T7331, when the color is erased. It was a laminated molded product having a reflective layer of a metal vapor deposited thin film of CrO _{3 that was} lowered, and was a laminated molded product that passed the standards of industry standard JIS, T-8147. The laminated molded product of the present invention was exposed to direct sunlight to develop a color of the dimming dye, and the visible light transmittance measured immediately was 18.5%. When the laminated molded product was decolored under room light, the luminous transmittance of the visual light returned almost to the original state.

Example 3
Polyethylene having a polarization degree of 99.95% using a dye-based dye on the adhesive layer of the laminated sheet having an adhesive layer on the upper surface of the metal vapor-deposited thin film layer having a thickness of 0.123 mm and a polymerization degree of 120 or less obtained in Example 1. The thickness obtained by adhering a 0.08 mm cellulose triacetate film to both sides of a 0.02 mm thick polarizing film made of vinyl alcohol is 44% in total light transmittance of about 0.18 mm. A non-adhesive layer of a polarizing sheet (manufactured by Polatechno Co., Ltd.) prepared by applying an adhesive was pasted at a processing speed of 200 m / min using a dry laminating machine, and dried in a drying oven at a hot air temperature of 100 ° C. and a wind speed of 10 m / s. After coating processing, curing was performed at 45 ° C. for 48 hours to obtain a composite sheet having a total thickness of 0.303 mm.

The composite sheet-like material obtained above was molded into a lens shape by pressing at 120 degrees for 3 minutes with a hot press mold so that the concave surface was formed. Thereafter, the molded product was molded into an lens all-round mold using a lens molding machine (clamping force; injection pressure: 400 kgf / cm ² ); diameter 78 mmφ, curvature radius 84 mm, cavity thickness = 2.2 mm mold temperature; 120 ( It is mounted so that the adhesive layer is exposed in the mold (both fixed and movable) (that is, the polarizing sheet surface is formed on the objective side of the target lens), and the molding polycarbonate resin is set to the cylinder heater set temperature; Injection molding was performed at 280 to obtain a polycarbonate composite molded product. Next, the reinforcing liquid (Seiko Kasei HC-280) was dipped and dried at 90 ° C. for 4 hours to obtain the desired composite molded product. The resulting laminate moldings, CrO ₃ where the luminous transmittance JIS T 7331 to defined by that luminous transmittance of 75% or more, reduced enough wavelength 600nm or less of the visible light transmittance is short-wavelength light It was a composite molded product having a reflective layer of a metal vapor-deposited thin film, and was a composite molded product that passed the standards of industry standard JIS, T-8147.

Example 4
The adhesive layer of the light-modulating pigment-containing film obtained in Example 2 was used on both sides of a polarizing film having a thickness of 0.02 mm made of polyvinyl alcohol having a polarization degree of 99.95% using a dye-based dye. Non-adhesive of a polarizing sheet (manufactured by Polatechno Co., Ltd.) having a thickness of about 0.18 mm and a total light transmittance of 44% obtained by adhering a cellulose triacetate film, prepared by applying an adhesive on one side The layers were pasted with a dry laminating machine at a processing speed of 200 m / min, dried in a drying oven at a hot air temperature of 100 ° C., a wind speed of 10 m / s, cured after coating and processed at 45 ° C. for 48 hours, and a total thickness of 0.303 mm A composite sheet-like composite with a functional dye was obtained.

It was molded into a lens shape by pressing at 80 ° C. for 6 minutes with a hot press mold so that the adhesive layer of the light-modulating dye-containing composite sheet obtained above was formed in a concave surface. Thereafter, the molded product was molded into an lens all-round mold using a lens molding machine (clamping force; injection pressure; 400 kgf / cm ² ); diameter 78 mm, curvature radius 84 mm, cavity thickness = 2.2 mm mold temperature; 85 ( It is mounted so that the adhesive layer is exposed in the mold (both fixed and movable) (that is, the polarizing sheet surface is formed on the eyepiece side of the target lens), and the molding polycarbonate resin is set to the cylinder heater set temperature; Injection molding was conducted at 265 to obtain a polycarbonate light-modulating dye-containing composite molded product. Subsequently, the reinforcing liquid (Seiko Kasei HC-280) was dipped and dried at 90 ° C. for 4 hours to obtain the target polycarbonate dimmable dye-containing composite molded product. The resulting laminated molded article has a luminous transmittance of 75% or more and a visible light transmittance of a wavelength of 600 nm or less as defined in JIS T7331, when the color is erased. It was a polycarbonate dimmable dye-containing composite molded article having a reflective layer of a metal-deposited thin film of CrO ₃ , and passed the standards of industrial standards JIS and T-8147. The polycarbonate light-modulating dye-containing composite molded product of the present invention was exposed to direct sunlight to develop a color of the light-modulating dye, and the visible light transmittance measured immediately was 18.5%. When the polycarbonate light-modulating dye-containing composite molded product was decolored under room light, the luminous transmittance of the visual light returned almost to the original state.

FIG. 1 is a graph showing an example of light transmittance of a laminated molded product and a composite molded product before and after forming a deposited film layer. The deposited film layer is formed by vacuum deposition on one of the thermoplastic resin films using a mixture having a weight ratio of chromium: CrO ₃ = 4: 7. In the graph of FIG. 1, the curve having a generally high transmittance is the transmittance of the laminated molded product and the composite molded product before the deposition film is formed, and the other curve is the transmittance after the deposition film is formed. The laminated molded product and the composite molded product after the formation of the vapor-deposited film have a luminous transmittance of 75% or more and a light transmittance of a wavelength of 600 nm or less decreases as the wavelength is shorter, and a light transmittance of a wavelength of 500 nm or less is 80%. It can be confirmed that the light transmittance below 500 nm is lower than the light transmittance exceeding 500 nm.

  According to the present invention, a laminated molded product, a composite sheet-like product, a composite molded product on one side of a thermoplastic resin film, chromium, chromium oxide, silicon dioxide, zircon dioxide, titanium dioxide, alumina, a mixture of chromium and chromium oxide. By forming a layer obtained by vacuum-depositing a metal vapor-deposited thin film containing gold alone or in combination, the visible light transmittance of 500 nm or less that gives glare feel is lower than the visible light transmittance exceeding 500 nm. The metal material constituting the film layer has excellent antiglare properties, and further becomes a laminated molded product, a sheet-like product, and a composite molded product with reduced stress on the eyes. Further, by setting the luminous transmittance to 75% or more, a laminated molded product, a sheet-shaped product, and a composite molded product that do not interfere with nighttime use such as safe driving at night can be obtained.

Is a graph showing an example of an optical transmittance of the laminated moldings and composite molding before and after forming the deposited film layer of chromium and CrO _3.

Claims (2)

A film in which a vapor-deposited film layer is formed on one side of a thermoplastic resin film, an adhesive is applied to the vapor-deposited film layer, the film is preformed into a lens shape by hot pressing, and then the molded product is molded. A method for producing a laminated molded article, comprising: injection molding a lens molding resin material that is inserted into an inner surface of a mold and fused to an adhesive layer of the film. A manufacturing method characterized by imparting a polarizing function to the laminate molded product according to claim 1.

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