JP3016638B2 - Method for producing sheet-shaped resin molded product - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for continuously producing a decorative design and a resin molded product having a fine irregular shape on the surface such as a lenticular lens.

[0002]

2. Description of the Related Art A sheet having an uneven surface is used for decorative purposes and lenticular lenses, but it is quite difficult to precisely form the uneven shape. In particular, it is difficult to produce the above-mentioned lenticular lenses used for three-dimensional photography at low cost because high precision is required.

As shown in FIG. 8A, a lenticular sheet for stereoscopic photography is a transparent sheet provided with a fine cylindrical continuous irregular shape on the surface of a transparent sheet. FIG. 8B shows a fly-eye lens sheet similar to the lenticular sheet.
This is a transparent sheet having an uneven shape on the surface in which minute spherical lenses are arranged, and is used to form a three-dimensional photograph like a lenticular sheet. A stereoscopic photograph using a lenticular sheet is a stereoscopic image display method in which the viewing direction is different in only one direction, whereas a stereoscopic photograph using a fly-eye lens sheet is a stereoscopic image displaying method in which the observation direction is different two-dimensionally.

A three-dimensional photograph using a lenticular sheet and a fly-eye lens sheet will be briefly described. Here, only one direction when a lenticular sheet is used will be described, but basically the same applies to a two-dimensional case using a fly-eye lens sheet. FIG. 9 is a diagram for explaining the principle of stereoscopic photography. In FIG. 9A, 1
Reference numeral 1 denotes a lenticular sheet, which a human 13 observes. The lenticular sheet 11 is shown in FIG.
As shown in the figure, the obverse surface 21 of the transparent sheet 11 on the observation side has an uneven shape in which minute cylinders are arranged, and the rear surface 22
Functions as a cylindrical lens having an image forming position.
After the back surface 22, a photographic paper 23 is attached.

The photographic paper 23 is manufactured as follows. First, an object to be represented by a three-dimensional photograph is photographed with changing parallax. Then, the captured image is projected toward the lenticular sheet to which the photographic paper 23 is attached while maintaining parallax. The projected image is reduced on the photographic paper 23 and recorded in the order of parallax. After the photographic paper is peeled off and developed, it is pasted on the original position, whereby the photographic paper shown in FIG.
As shown in (1), image light is output in a direction corresponding to the parallax at the time of projection.

[0006] In a stereoscopic photograph, a lenticular sheet having characteristics suitable for the projection is used, assuming what kind of positional relationship the object is projected and what kind of positional relationship the lenticular sheet is observed. Now, as shown in FIG. 10, the image forming position by the cylinder surface 21 and the back surface 2 which is the printing paper surface
Suppose that a mismatch occurred between 2 and 2 due to variations in the thickness of the lenticular sheet. Then, as shown in FIG. 10, an image that should be recorded at one point is blurred, and there is a problem that a reproduced stereoscopic image is deteriorated. This is the same when the shape of the cylinder surface 21 changes. Therefore, the lenticular sheet for stereoscopic photography and the fly-eye lens sheet require high production accuracy.

As a method of manufacturing a sheet-like resin molded product having a surface having irregularities such as a lenticular sheet and a fly-eye lens sheet, a method of injection-molding a molten synthetic resin, a method of bringing a resin plate and a mold into contact with each other. A pressure molding method or the like in which the unevenness of the surface of the mold is transferred by heating and pressing the same is employed.

[0008]

However, there are various problems when producing a lenticular sheet for stereoscopic photography and a fly-eye lens sheet by the above-mentioned method. The injection molding method includes an upper mold 31 and a lower mold 32 as shown in FIG.
The molten synthetic resin is injected into the hollow 34 formed by the injection port 33 through the injection port 33 and solidified.
Is molded separately. However, the injection molding method is not only problematic in terms of productivity and cost because the mold wears relatively quickly, but it is difficult to mold a large-sized one, so that it can be used only for a relatively small-sized one.
In addition, in the press molding method by heating and pressing shown in FIG. 11B, a long time is required for a cycle of heating and cooling the resin plate and the mold, so that a large number of molds need to be prepared for mass production of the resin molded product. In order to produce a large-sized resin molded product, a large amount of equipment is required. Further, as is apparent from FIG. 11B, in the case of a lenticular sheet or a fly-eye lens sheet, the shape of the mold has sharp projections, so that there is a problem that the mold is quickly worn by pressing. Furthermore, the lenticular sheet manufactured by these methods is not always satisfactory in transferability to the mold, the shape of the lenticular lens is shifted from the design value, the image is shifted, the image has lines, The image was not sharp.

Further, in order to further improve the productivity by the press molding method, as shown in FIG. 12, a concave and convex shape of a cylinder is provided on the surface of a roll 39, and a heated resin plate is sandwiched between the roll 39 and an opposing support roll 40. Although there is a method of performing continuous press molding, there is a problem that the mold is significantly damaged and the shape transfer is insufficient due to the above-mentioned reasons. The present invention has been made in view of the above problems, and an object of the present invention is to realize a manufacturing method capable of producing a resin molded product having an uneven shape on its surface with high accuracy and good production efficiency.

[0010]

In order to solve the above-mentioned problems, the production method of the present invention applies an active energy ray-curable resin composition to a sheet-like transparent substrate, and then forms an inverse mold having an uneven shape on the surface. Irradiation with active energy rays is performed while pressing a rotating roll having That is , the method for producing a sheet-like resin molded product according to the present invention described in claim 1 is a method for producing a sheet-like resin molded product having an uneven shape on the surface. After supplying the active energy ray-curable resin composition, a roll- shaped mold having a reverse uneven shape of the uneven shape on the surface and rotating at the same rotation speed as the transport speed of the transparent substrate and the roll-shaped mold Small diameter support
In a state that conveys a transparent base material between the supply of the transparent base material <br/> active energy ray curable resin composition was pressed into a roll form with lifting roll, the side of the support roll Activities placed in
Resin composition supplies active energy ray from reactive energy ray source
Irradiating the resin composition through the transparent substrate from the opposite side of the the surface
The product is shaped and cured . Further, claim 3
PROCESS FOR PRODUCING SHEET RESIN MOLDED PRODUCT OF THE PRESENT INVENTION
Manufactures sheet-shaped resin molded products having irregularities on the surface
The method comprises the steps of:
After supplying the energy curable resin composition, the surface is uneven
It has the reverse uneven shape and the same as the transport speed of the transparent substrate
Is supplied to a transparent substrate in a roll-type mold that rotates at a rotation speed of
Active energy ray-curable resin composition
The active energy ray-curable resin composition is transported
While pressed against the roll-shaped mold, the active energy ray is
Pass through the transparent substrate from the opposite side of the surface where the resin composition was supplied.
And irradiate to cure and cure the resin composition.
After peeling the molded resin composition together with the transparent substrate,
Irradiating reactive energy rays to completely cure the resin composition
And features. Further, according to the present invention described in claim 4,
The method for producing a sheet-shaped resin molded product has an irregular shape on the surface.
A method for producing a sheet-like resin molded product,
Energy ray curable resin composition on transparent sheet-like base material
After supplying the material, the reverse uneven shape of the uneven shape is formed on the surface.
Provide cylindrical sections at both ends with a diameter larger than the uneven part
Roll that rotates at the same rotation speed as the transport speed of the transparent substrate
Energy-curable resin supplied to a transparent substrate in a mold
The composition comes into contact and the transparent substrate wraps around the surface of the roll mold
Active energy ray-curable resin
With the composition pressed against the roll mold, the active energy
The lug wire is connected to the transparent substrate from the opposite side of the surface to which the resin composition was supplied.
Irradiating through the material to shape and cure the resin composition.
Sign.

[0011]

FIG. 1 is a view for explaining the manufacturing method of the present invention. In the drawing, reference numeral 1 denotes a sheet-shaped transparent substrate, which is conveyed at a constant speed by a conveying means. Reference numeral 2 denotes an active energy ray-curable resin composition, which is in a liquid state. Reference numeral 7 is for applying the above resin composition to the surface of the transparent substrate 1 at a constant thickness. Reference numeral 3 denotes a roll having an inverted shape of a concavo-convex shape on the surface, and rotates at a constant speed. Reference numeral 4 denotes a means for irradiating an active energy ray.
Irradiate with active energy rays. Reference numeral 8 denotes an active energy ray shielding means for preventing the resin composition from being irradiated with the active energy ray before being hardened along the surface shape of the roller 3 and hardened.

The roll 3 is pressed against the resin composition 2 applied on the transparent substrate 1 but does not contact the transparent substrate 1. Also, if contact occurs, the surface of the roll 3 and the transparent substrate 1
Hardly any force is applied. The resin composition is in a liquid state until the active energy ray is irradiated. Even if the surface of the roll 3 is pressed, little force is applied to the surface of the roll 3 and the resin composition follows the uneven shape of the surface of the roll 3. Shape. In this state, the active energy ray is irradiated and cured, and a desired uneven shape is formed on the transparent substrate 1.

Therefore, since little force is applied to the surface of the roll 3, the mold is not damaged. Moreover, since the transparent substrate 1 is transported in accordance with the rotation of the roll 3, the production efficiency is high, and a very long one in the transport direction can be produced. In addition, since the active energy ray is irradiated and hardened when the liquid resin composition 2 follows the shape of the roll 3,
The transferability of the uneven shape is very good. In addition, since the transparent base material 1 already processed into a sheet shape is used, it is easy to control the distance between the lower surface of the transparent base material 1 and the roll 3, and a sheet-shaped resin molded product having a high precision in thickness is required. can get.

[0014]

EXAMPLE An example of manufacturing a lenticular sheet as shown in FIG. 2 will be described. Here, it is assumed that the sheet is conveyed in the direction of the cylinder, but the same applies to the case where the direction of the cylinder is perpendicular to the conveying direction. As the transparent substrate used in the present invention, a plate-shaped or film-shaped resin substrate, a glass plate, or the like can be used. Above all, a resin sheet-like base material having a thickness of 1000 μm or less is desirable from the viewpoint of continuous productivity of the molded product and winding and storing the molded product. Further, an easy-adhesion layer, an antistatic layer, and the like may be provided on the resin substrate as needed.

The active energy ray-curable resin used in carrying out the present invention includes, for example, a composition mainly composed of a monomer / oligomer having a polymerizable group, a thermoplastic binder resin and a monomer / oligomer having a polymerizable group. It is possible to use a composition mainly composed of, for example, a composition mainly composed of a resin in which a polymerizable group is bonded to a main chain and a side chain of a photocationic polymerization reaction type epoxy resin composition, or a polymer, The resin is not particularly limited to these compositions as long as it has a relatively low viscosity and can be cured by an active energy ray.

The monomer or oligomer having a polymerizable group is not particularly limited, but has a boiling point at normal pressure of 100 ° C.
As described above, those having a molecular weight of 10,000 or less are used, and when ultraviolet rays are used as active energy rays, monomers and oligomers having an acryloyloxy group or a methacryloyloxy group as a polymerizable group are preferable. Examples of such monomers and oligomers having a (meth) acryloyloxy group include polyether acrylate or polyether methacrylate (hereinafter, “acrylate or methacrylate” is simply abbreviated to “(meth) acrylate”) polyester (meth) acrylate Monomers / oligomers such as poly (meth) acrylate, epoxy (meth) acrylate, amidourethane (meth) acrylate, urethane (meth) acrylate, spiroacetal (meth) acrylate and polybutadiene (meth) acrylate Can be mentioned.

The composition mainly composed of a thermoplastic binder resin and a monomer / oligomer having a polymerizable group is a composition containing the above-mentioned monomer / oligomer having a polymerizable group and a thermoplastic resin. As the thermoplastic resin, those having high transparency are preferable, for example, polyester resin,
(Meth) acrylic resin, polystyrene, polycarbonate, polyvinyl butyral and the like can be mentioned.

As the cationic photopolymerization type epoxy resin composition, bisphenol A diglycidyl ether, novolac glycidyl ether, glycidyl hexahydrophthalate, triglycidyl isocyanurate, 3,4 epoxycyclohexylmethyl carboxylate, etc. are used as the resin. As the photopolymerization initiator to be used, there may be mentioned a resin in which a diaryliodonium compound composed of an aromatic halonium salt of a Lewis acid and a triarylsulfonium compound composed of an aromatic sulfonium salt of a Lewis acid are used in combination.

Examples of the resin having a polymerizable group bonded to the main chain or side chain of the polymer include unsaturated polybasic acids having reactive double bonds and unsaturated polycondensates obtained by polycondensation of polyhydric alcohols. There are polyester resins and the like, specifically, maleic anhydride / phthalic anhydride / propylene glycol, maleic anhydride / isophthalic acid / propylene glycol,
Resins obtained from maleic acid / fumaric acid / isophthalic acid / 1,3-butanediol, maleic acid / isophthalic acid / neopentyl glycol, maleic anhydride / tetrahydrophthalic anhydride / dipropylene glycol, and the like can be given.

For the purpose of improving the refractive index, flexibility, releasability, adhesion, light resistance, antistatic properties, etc. of the active energy ray-curable resin composition layer, a plasticizer, a surfactant, Agent,
An antioxidant, an ultraviolet absorber, an antistatic agent, a lubricant, a coloring agent, a filler, and the like may be blended in the active energy ray-curable resin composition. In the present invention, in order to cure the resin composition, electron beam, particle beam such as ion beam, γ ray, X
An active energy ray such as an electromagnetic wave ray such as a ray, an ultraviolet ray, and a visible light ray is used. Above all, it is preferable to use ultraviolet rays from the viewpoint of the curing speed, the simplicity of equipment when the size is increased, and the like. When using ultraviolet rays as active energy rays,
The photopolymerization initiator is added in an amount of 0.01 to 20% by weight based on the whole resin part.

Examples of the photopolymerization initiator used include benzoin, benzoin isobutyl ether, benzyldimethyl ketal, ethylphenylglyoxylate, diethoxyacetophenone, 1,1-dichloroacetophenone, and 4'-isopropyl-2-hydroxy-2. Carbonyl compounds such as -methylpropiophenone, 1-hydroxycyclohexylphenyl ketone, benzophenone, benzophenone / diethanolamine, 4,4'-bisdimethylaminobenzophenone, 2-methylthioxanthone, tert-butylanthraquinone, and benzyl; tetramethylthiuram monosulfide , Sulfur compounds such as tetramethylthiuram disulfide, azo compounds such as azobisisobutylnitrile, azobis-2,4-dimethylvaleronitrile, Down benzoyl peroxide, di -t
peroxide compounds such as tert-butyl peroxide; These compounds can be used alone or in combination of two or more.

In the present invention, the active energy ray-curable resin composition is coated on a transparent substrate by a roll coating method, a blade coating method, a bar coating method, a spray coating method, a curtain coating method, a flow coating method, or the like.
Although a dip coating method and the like can be mentioned, the viscosity of the resin composition is desirably low in consideration of workability, and therefore, a solvent for the resin composition, for example, ethyl alcohol, methyl ethyl ketone, toluene, ethyl acetate, Dimethylformamide or the like may be blended and adjusted to an appropriate coating viscosity. When these solvents are blended, it is necessary to volatilize and dry the solvent after applying the resin composition.

Next, a method of bringing a roll into contact with the active energy ray-curable resin composition applied on a sheet-like transparent substrate will be described. Basically, it is the same as that shown in FIG. 1, and in the following figures, the numbers indicating the respective parts are common. The mold for shaping the concavo-convex shape used in the present invention is a roll having the concavo-convex shape around the shape. The material is not particularly limited, but examples thereof include metal, glass, ceramics, and synthetic resin.

Since the thickness of the lenticular sheet to be produced, including not only the surface shape but also the transparent substrate, greatly affects the quality of the stereoscopic photograph, it is important to control the thickness. In order to keep the thickness constant, it is important to maintain the positional relationship between the lower surface of the transparent substrate and the roll surface at a predetermined value when the roll is brought into contact with the resin composition and cured. In the present invention, it is possible to use a transparent base material that has already been processed into a sheet shape, and it is not necessary to apply plasticity by heating for molding. In order to perform the management, a support roll 5 for supporting the lower surface of the transparent substrate 1 is used as shown in FIG.

The distance between the roll 3 and the support roll 5 maintains a mechanically highly accurate positional relationship, so that a lenticular sheet having a constant thickness can be obtained. However, in this case, since the support roller 5 is present, the active energy ray cannot be irradiated from directly below the contact portion of the roll 3, so that it is necessary to irradiate the active energy ray obliquely as shown in FIG. Therefore, it is desirable that the diameter of the support roll 5 be as small as possible. In FIG. 3, even after the cured resin composition is separated from the surface of the roll 3, it is completely cured by irradiating with active energy rays. Since the uneven shape is determined by curing during the contact with the roll 3, the uneven shape is not changed by the irradiation of the active energy ray after separation.

In the method shown in FIG. 3, irradiation with active energy rays can be performed only in an oblique direction as described above. Therefore, this is improved in the example shown in FIG. In FIG. 4, the support roll 5 is made of a material transparent to the active energy rays, for example, quartz glass when the active energy rays are ultraviolet rays.
The active energy ray source 4 is provided in the support roll 5 or guided into the support roll 5 to irradiate from the inside of the support roll 5. This makes it possible to efficiently irradiate the portion where the roll 3 is in contact with the resin composition 2 with active energy rays. Also in this case, it is necessary to provide a shield 8 to prevent the resin composition 2 from being cured before coming into contact with the roll 3.

In the example shown in FIG. 3 and FIG.
Was provided to control the thickness. However, the lower surface of the transparent substrate 1 may be separated from the surface of the support roll 5 by a small amount due to vibration or the like. Therefore, in practice, it is preferable to wind the support roll 5 only at a small angle. FIG. 5 is an example of FIG.
This is an example of winding around a support roll 5. In the examples shown in FIGS. 1 and 3 to 5, the resin composition 2 comes into contact with the roll 3 only on the tangent line, and the contact time is short. For this reason, it is necessary to irradiate a strong active energy ray during the contact to cure. However, when it is difficult to obtain such a strong active energy ray source, the transparent substrate 1 may be wound around a roll 3 as shown in FIG. By doing so, the time during which the surface of the roll 3 is in contact with the resin composition 2 is long, so that the production speed can be further increased, and the transferability of the uneven shape can be further improved.

However, in FIG. 6, since the transparent substrate 1 is urged by the roll 3, the surface of the roll 3 comes into contact with the surface of the transparent substrate 1. In this case, if the urging force is not too large, damage to the surface of the roll 3 does not cause much problem, and the tip of the uneven shape on the surface of the roll 3 comes into contact with the surface of the transparent substrate 1. For example, a lenticular sheet having a constant thickness can be obtained.

However, if the unevenness of the mold becomes problematic due to the contact of the surface of the roll 3 with the transparent substrate 1, as shown in FIG. By providing the cylindrical portion 9 having a large diameter and winding the transparent substrate 1 around the portion, the interval is accurately maintained without contacting the mold portion. Of course, the portion of the transparent substrate 1 that is wound around the cylindrical portion 9 is not coated with the resin composition,
No uneven shape is formed.

In consideration of transferability to a mold and inhibition of polymerization by oxygen, it is necessary to irradiate at least a part of the portion where the active energy ray-curable resin composition is in contact with the roll through a transparent substrate. is there. The above is the description of the production method of the present invention. The lenticular sheet produced by the above production method will be described.

In the first example, a transparent substrate having a thickness of 1
An 88 μm easily-adhesive treated polyester film “Lumirror T93” (manufactured by Toray Industries, Inc.) was used. As the active energy ray-curable resin composition, the following composition containing an ultraviolet initiator was used. 2,2'bis (4-acryloxydiethoxyphenyl) propane 21.0 parts by weight Phenoxyethyl acrylate 9.0 parts by weight 1-hydroxycyclohexyl phenyl ketone 1.5 parts by weight Silicon surfactant SH28PA 0.1 parts by weight (Manufactured by Dow Corning Silicone Toray Co., Ltd.) Methyl ethyl ketone 4.0 parts by weight Toluene 1.0 parts by weight After applying the resin composition to the above film by a blade roll coater and evaporating the solvent, as shown in FIG. The resin composition was cured by irradiating ultraviolet rays while pressing a roll-shaped mold having an inverse of a lenticular lens against the resin composition-coated surface to obtain a lenticular lens sheet.

The thickness of the obtained lenticular lens sheet was uniform. Further, when the lens shape was measured with a surface roughness measuring device (SE-30H manufactured by Kosaka Laboratories), the shape of the lenticular lens of the roll mold was accurately transferred. In the second example, the transparent substrate has a thickness of 125 μm
Polyester film "Lumirror T93"
(Manufactured by Toray Industries, Inc.) ". As the active energy ray-curable resin composition, the following composition containing an ultraviolet initiator was used.

2,2'bis (4-acryloxydiethoxyphenyl) propane 21.0 parts by weight 2-hydroxy-3-phenoxypropyl acrylate 9.0 parts by weight 1-hydroxycyclohexyl phenyl ketone 1.5 parts by weight Silicon-based Surfactant SH28PA 0.1 parts by weight (manufactured by Dow Corning Toray Silicone Co., Ltd.) Methyl ethyl ketone 4.0 parts by weight Toluene 1.0 part by weight The resin composition was applied to the above film by a blade roll coater and the solvent was volatilized. Thereafter, as shown in FIG. 6, the resin composition was cured by irradiating ultraviolet rays while pressing a roll-shaped mold having the shape of a lenticular lens against the coated surface of the resin composition to obtain a lenticular lens sheet. . In this case, the lenticular lens sheet could be manufactured faster than in the case of the first example. The thickness of the obtained lenticular lens sheet was uniform. Further, when the lens shape was measured with a surface roughness measuring device (SE-30H manufactured by Kosaka Laboratories), the shape of the lenticular lens of the roll mold was accurately transferred.

For comparison, in order to mold a lenticular lens mold on a 125 μm thick PMMA film,
PM with a flat mold having the shape of a lenticular lens
Pressed against MA film. At room temperature, the shape of the lenticular lens could not be transferred by pressing, but the lenticular lens could be transferred by the flat plate pressing method by heating the film and the mold. However, the lens shape of the obtained lenticular lens sheet was measured with a surface roughness measuring device (Kosaka Laboratory S
E-30H), the shape of the mold lenticular lens was not accurately transferred.

Although the production method of the present invention has been described by taking the production of a lenticular sheet as an example, the present invention is naturally applicable not only to the production of a fly-eye lens sheet or the like having other uneven shapes on the surface but also to a lenticular sheet. It is.

[0036]

According to the present invention, the active energy ray-curable resin composition is applied to a transparent base material and then applied to a roll-shaped mold having an uneven surface. By using a process of irradiating an active energy ray with the resin layer pressed to cure the resin layer, it can be easily used for a large-sized product, and a resin molded product can be continuously manufactured with high productivity. Not only is it possible to obtain a resin molded product having very good transferability, but the effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating steps of a method for producing a sheet-shaped resin molded product of the present invention.

FIG. 2 is a view showing a lenticular sheet to be manufactured in an example.

FIG. 3 is a diagram showing an embodiment in which an opposing roll is provided for thickness control.

FIG. 4 is a view showing an embodiment in which the opposing roll is made transparent and active energy rays are irradiated from the inside of the opposing roll.

FIG. 5 is a view showing an embodiment in which a sheet-shaped transparent base material is wound by a small amount around a facing roll in the embodiment of FIG. 4 to further improve the thickness control.

FIG. 6 is a diagram showing an embodiment in which the contact time is increased by winding the contact surface around a roll having an uneven shape to be transferred to the surface.

FIG. 7 is a view showing an embodiment in which guide portions are provided at both ends of the roll in order to control the thickness with high precision without the roll surface and the transparent substrate contacting each other in FIG.

FIG. 8 is a diagram showing a lenticular sheet and a fly-eye lens sheet for stereoscopic photography.

FIG. 9 is a diagram illustrating the principle of a stereoscopic photograph.

FIG. 10 is a diagram illustrating a shift of a focal position due to a change in thickness of a lenticular sheet and a fly-eye lens sheet.

FIG. 11 is a diagram showing a conventional method for manufacturing a sheet having an uneven shape on the surface.

FIG. 12 is a diagram showing a conventional example of continuous molding using a roll-shaped mold by the press molding method of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Transparent base material 2 ... Active energy ray-curable resin composition 3 ... Roll 4 ... Active energy ray source

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayuki Fujiwara 20-1 Miyukicho, Otake City, Hiroshima Prefecture Mitsubishi Rayon Co., Ltd. Central Research Laboratory (56) References JP-A-51-541 (JP, A) 51-542 (JP, A) JP 1-35737 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 31/28 G03B 35/00 G03C 7/14 G03C 9 / 02

Claims (5)

(57) [Claims] 1. A method for producing a sheet-like resin molded article having an uneven shape on a surface, comprising supplying an active energy ray-curable resin composition to a sheet-like transparent substrate to be conveyed, and then applying the active energy ray-curable resin composition on the surface. rolled-type rotating at conveying speed and the same rotational speed of a reverse-type concave-convex shape of the uneven shape the transparent substrate and
Between the supporting roll having a smaller diameter than the roll-shaped mold.
Conveying the serial transparent substrate, in a state in which said active <br/> of energy ray-curable resin composition is supplied to the transparent substrate is pressed against the rolled-type, on the side of the support roll Placed
The resin composition of the active energy ray from an active energy ray source
Irradiated through the transparent substrate but from the opposite side of the supplied surface
A method for producing a sheet-like resin molded article having a concave-convex shape on a surface, wherein the resin composition is shaped and cured . 2. The method according to claim 1, wherein the transparent base material is a roll type and a support roll.
Transport of the transparent base material in the vicinity of the passing position passing between
Irradiate the front part with active energy rays
2. The surface according to claim 1, wherein the surface has an uneven shape.
A method for producing a sheet-shaped resin composition. 3. A sheet-shaped resin component having an uneven shape on its surface.
A method for producing a shaped article, comprising a sheet-shaped transparent substrate to be conveyed.
After supplying the active energy ray-curable resin composition to the material,
A transparent substrate having a concave-convex shape reverse to the concave-convex shape on the surface;
Roll type that rotates at the same rotation speed as the material transport speed
The active energy ray-curable tree supplied to the transparent substrate
Conveying the transparent substrate so that the fat composition abuts,
The active energy ray-curable resin composition is pressed into the roll-shaped mold.
In the applied state, the active energy ray is applied to the resin composition.
Irradiation through the transparent substrate from the side opposite to the side where
Then, the resin composition is shaped, cured, and shaped from a roll-shaped mold.
After peeling the resin composition together with the transparent substrate,
Further, the resin composition is completely irradiated by irradiating an active energy ray.
A sheet that has an uneven shape on the surface characterized by curing
A method for producing a resin molded article. 4. A sheet-like resin composition having an uneven surface.
A method for producing a shaped article, comprising a sheet-shaped transparent substrate to be conveyed.
After supplying the active energy ray-curable resin composition to the material,
A surface having a reverse uneven shape of the uneven shape on the surface;
The transparent base material provided at both ends with a cylindrical portion having a diameter larger than the portion
Roll type mold that rotates at the same rotation speed as
The active energy ray-curable resin supplied to the transparent substrate
The composition is in contact with the transparent substrate and the surface of the roll-shaped mold
The transparent substrate is transported so as to be wound around
A lug wire-curable resin composition was pressed against the roll-shaped mold.
In this state, the active energy ray is supplied by the resin composition.
Irradiated through the transparent substrate from the opposite side of the
Irregularities on the surface characterized by shaping and curing the fat composition
A method for producing a sheet-shaped resin molded product having a shape. 5. The method according to claim 1, wherein the resin composition comprises the transparent substrate and the resin.
Against the roll mold so that the mold does not touch
The method according to any one of claims 1 to 4, wherein
Manufacture of sheet-shaped resin molded product with uneven surface on mounting
Method.