JP2002040666A - Photosensitive resin laminate and plate material for label plate consisting of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photosensitive resin laminate used for a label plate such as a display panel, decoration shield, nameplate, Braille display plate or the like and to provide a label plate, having superior design properties and superior transparency of the support body which does not generate malodor, when the support body is cut. SOLUTION: (1) In the photosensitive resin laminate, having a photosensitive resin layer formed directly or with an adhesive layer interposed on a support body, the supporting body consists of polycarbonate resin. (2) In the photosensitive resin laminate described in (1), the support body has >=1 mm thickness. (3) The plate material for a label plate consists of the photosensitive resin laminate as described in either (1) or (2).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive resin laminate used for a signboard such as an exhibition panel, a decorative shield, a nameplate, a Braille display board, and a plate for a signboard made of the same. There is no odor when cutting,
Another object of the present invention is to provide a sign board having excellent transparency of a support and excellent design properties.

[0002]

2. Description of the Related Art Conventionally, a photosensitive resin laminate for a sign plate obtained by exposing a photosensitive resin layer through a pattern and then developing the photosensitive resin layer is disclosed in JP-A-58-5592.
No. 7, JP-A-9-6267 and the like, and are used for a Braille panel having a relief, a sign board including Braille, and the like. However, in recent sign plates, the market demands that the support for the support be transparent and have excellent cutting workability for cutting into a predetermined shape. However, a commonly used photosensitive resin laminate using a phenol plate as a support is unsuitable for producing a transparent sign plate, and there is a problem in working that odor is generated when the support is cut. Was. Therefore, there has been a demand for a photosensitive resin laminate suitable for a sign plate having excellent design and workability of cutting a support.

[0003]

SUMMARY OF THE INVENTION The present invention relates to display panels,
In a photosensitive resin composition laminate used for a decorative shield, a name plate, a Braille display board, and the like, it is an object to obtain a transparent photosensitive resin laminate for a sign, which is excellent in support cutting work and designability. Things.

[0004]

Means for Solving the Problems In order to solve the above problems, the present inventors have sincerely studied and studied, and as a result, have finally completed the present invention. That is, the present invention provides a photosensitive resin laminate having at least a photosensitive resin layer on a support via an adhesive layer, wherein the support is a polycarbonate resin. The photosensitive resin laminate according to the above, wherein the thickness of the support is 1 mm or more. And a plate for a sign plate comprising the photosensitive resin laminate described above or above.

[0005]

Next, the present invention will be described in more detail. The thickness of the support (hereinafter sometimes referred to as a support plate) used in the present invention is usually selected in a range of 1 mm to 10 mm, which is suitable for the application and design. 1m thick
If the support is less than m, the resin plate itself tends to warp and is not suitable for use as a sign plate. If the thickness exceeds 10 mm, the plate cannot be easily cut or the weight increases, which is not preferable.

The support used in the present invention uses a polycarbonate resin. Known polycarbonates can be used as the polycarbonate resin.
Specific examples include hydroquinone, an aromatic polycarbonate synthesized from an aromatic dioxy compound such as bisphenol A, cyclohexane dimethanol, and an alicyclic polycarbonate synthesized from an alicyclic dioxy compound such as hydrogenated bisphenol A. , 1,6 hexanediol,
An aliphatic polycarbonate synthesized from an aliphatic dioxy compound such as neopentyl glycol is exemplified, and a polycarbonate synthesized from bisphenol A is preferable in view of physical properties and cost.

The polycarbonate resin used for the support of the present invention may be modified by copolymerization or blending with other polymers, as long as the cut workability and the transparency are not impaired. You may mix and modify. Examples of the copolymerization include polycarbonate obtained by copolymerizing bisphenol A with 1,6 hexanediol. Examples of the polymer blend include a resin obtained by blending an ABS resin with a bisphenol A polycarbonate.

The polycarbonate used as the support is preferably transparent and has a total light transmittance of 60% or more.
It is preferably at least 70%, particularly preferably at least 80%. If the total light transmittance is less than 60%, it is unsuitable for a sign plate which lacks quality when processed into a sign plate and has excellent design properties.

As the photosensitive resin layer used in the present invention, known ones can be used. Specifically, soluble polymer compounds (for example, polyvinyl alcohol, polyamide,
Polyetheresteramide, polyetheramide, polyurethane, etc.), photopolymerizable or photocrosslinkable monomer (e.g., polyhydric alcohol acrylate, polyhydric alcohol epoxy acrylate, N-methylolacrylamide, etc.), photopolymerization initiator (e.g., Benzyldimethyl ketal, benzoin dimethyl ether, etc.) and, if necessary, a heat stabilizer, a plasticizer, a surfactant, a dye, an ultraviolet absorber and the like.

Next, as a method for obtaining the photosensitive resin laminate of the present invention, an adhesive described later is applied on the support plate and the photosensitive resin layer is laminated, but it can be laminated by a known method. . For example, hot pressing, casting, or melt extrusion,
It can be laminated on the support by any method such as solution casting and lamination.

The photosensitive resin layer is prepared in advance by laminating a resin film such as polyethylene terephthalate on a support as a support (hereinafter referred to as a photosensitive resin laminate precursor). May be peeled off from the resin film and laminated on the polycarbonate resin plate.

As a method for preparing the photosensitive resin laminate precursor, a method for producing a usual photosensitive resin laminate for a printing plate can be adopted. For example, the resin film (in this case, an adhesive is used) A cover which is coated with a transparent polymer having no tackiness and which is dispersed or dissolved in a developer (such as polyvinyl alcohol or cellulose, also referred to as a slip coat layer) to a thickness of 1 to 3 μm. The photosensitive resin composition is melt-extruded and laminated between, for example, a polyester film having a thickness of 125 μm to be a film, that is, a resin film, a photosensitive resin layer, a slip coat layer, and a cover film in order from the bottom. Is obtained.

In the present invention, when a photosensitive resin layer (which may further have a slip coat layer or a cover film) is bonded to the polycarbonate resin plate,
As the adhesive layer to be used, a known adhesive can be used, and specific examples thereof include a polyester urethane adhesive obtained by curing a soluble polyester with a polyvalent isocyanate, and an epoxy adhesive. . Among them, a polyester urethane-based adhesive is preferable because of excellent adhesion to a photosensitive resin, and among polyester urethane-based adhesives, an adhesive composed of polyester and an isocyanurate-type polyisocyanate is particularly preferable from the viewpoint of low-temperature drying. Other minor components can be added to the adhesive layer composition. Examples of the additives include a plasticizer, a dye, an ultraviolet absorber, an antihalation agent, a surfactant, and a photopolymerizable vinyl monomer.

As a method for providing an adhesive layer on a support,
Generally, the solvent is removed after applying the adhesive layer composition solution to a predetermined thickness. As a coating method, a known method such as a roll coater, a curtain flow coater, a slit die coater, a gravure coater, or a spray can be used. The drying treatment of the adhesive layer after coating the support is generally performed by blowing hot air in a drying oven. The drying temperature of the adhesive layer used in the present invention is 15 ° C to 80 ° C.
Is less than 20 ° C., and preferably 20 ° C. to 70 ° C. If the temperature exceeds 80 ° C., the support is undesirably deformed such as warpage.
If the temperature is lower than 15 ° C., the drying time becomes longer, which is not preferable.

The thickness of the adhesive layer needs to be in the range of 0.5 μm to 100 μm. When the thickness is less than 0.5 μm, the adhesive force between the photosensitive resin layer and the adhesive layer does not appear. On the other hand, if the thickness of the adhesive layer exceeds 100 μm, there arises a problem that foaming occurs when the coating liquid is dried and air bubbles are mixed. For such a reason, the thickness of the adhesive layer needs to be in the range of 0.5 μm to 100 μm, and preferably 1 μm to 50 μm.

As described above, a method for producing a sign plate from the photosensitive resin laminate of the present invention having a support plate, an adhesive layer and a photosensitive resin layer (which may further have a slip coat layer or a cover film) includes: For example, a method of preparing a normal printing plate can be adopted.For example, a negative film or a positive film having a transparent image portion is closely adhered on a photosensitive resin layer with or without a slip coat layer, and laminated. In addition, when exposure is performed by irradiating actinic rays from above, only the exposed portions are insolubilized and cured. As the actinic ray, a light source such as a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a metal halide lamp, a xenon lamp, and a chemical lamp having a wavelength of usually 300 to 450 nm can be used.

Then, the non-exposed portion is dissolved and removed with a suitable solvent, particularly, neutral water in the present invention to obtain a relief plate having a clear image area. To do this,
A spray developing device, a brush developing device, or the like can be used.

According to the above-described method, a sign board having a relief can be prepared. A paint containing a colorant, an ultraviolet absorber or the like is further applied on the relief, or a foil stamp is applied on a character or an image. Or color with paint,
In addition, a method such as putting a dye in the support, adding a color or pattern to the back side of the support, laminating with a decorative board, or performing bending while heating the support as necessary. Thus, various sign boards can be obtained, and their applications can be expanded.

[0019]

EXAMPLES Next, the present invention will be described specifically with reference to examples, but the present invention is not limited to these examples.
The total light transmittance is a value measured according to JIS K-7361.

Example 1 As a support, a polycarbonate resin using bisphenol A as a dioxy compound having a thickness of 2.0 mm and a total light transmittance of 83% (Polyace Ace EC manufactured by Tsutsunaka Plastics Co., Ltd.)
K 100) was used. The adhesive layer used a polyester urethane-based adhesive, and the composition solution for the adhesive layer was prepared as follows. 80 parts by weight of a polyester resin "Vylon RV-200" manufactured by Toyobo Co., Ltd. was heated and dissolved at 80 ° C. in 1940 parts by weight of a mixed solvent of toluene / methyl ethyl ketone = 80/20 (weight ratio). After cooling, 20 parts by weight of "Desmodur HL" of isocyanurate-type polyisocyanate manufactured by Sumitomo Bayer Urethane Co., Ltd. using hexamethylene diisocyanate and toluene diisocyanate as raw materials as isocyanurate-type polyisocyanate, and triethylenediamine 0 as a curing catalyst 0.06 parts by weight and stirred for 10 minutes. The thus obtained adhesive layer composition solution was applied to a thickness of 2.0 μm so that the film thickness became 12 μm.
The support was coated on a polycarbonate plate having a thickness of 50 mm and dried and cured at 50 ° C. for 20 minutes to obtain a support coated with an adhesive layer.

As the photosensitive resin composition to be laminated, ε-
525 parts of caprolactam, 400 parts of a nylon salt of N- (2-aminoethyl) piperazine and adipic acid, 1,3
75 parts of a nylon salt of bis (aminomethyl) cyclohexane and adipic acid were melt-polycondensed in an autoclave to obtain a copolymerized nylon. 55 parts of the obtained polymer was
After dissolving in 200 parts of methanol at 0 ° C., 2 parts of glycidyl methacrylate was added and stirred for 3 hours to react glycidyl methacrylate on the polymer terminals. To this solution was added 4 parts of methacrylic acid, and then 35 parts of acrylate obtained by the open addition reaction of triglycidyl ether of trimethylolpropane with acrylic acid, 5 parts of N-ethyltoluenesulfonamide, 0.1 part of hydroquinone monomethyl ether. 1 part, benzyldimethyl ketal
0 parts were added to obtain a solution of the photosensitive resin composition. This solution was cast on a polyester film, and methanol was removed by evaporation to obtain a sheet of a photosensitive resin composition having a thickness of about 800 μm.

The method of attaching the photosensitive resin composition obtained as described above to a support on which an adhesive layer has been applied is as follows. inject. The photosensitive resin layer was pressure-bonded at a room temperature of 25 ° C. through a rubber roller whose gap clearance was adjusted according to the thickness of the laminated layers, thereby producing a photosensitive resin laminated body.
After leaving the photosensitive resin laminate for one day, cut it to a predetermined size with a circular saw-type cutter, put a negative on it, and expose it.
Developing, drying and post-exposure treatments were performed to form a display panel pattern. The obtained display panel pattern was transparent, had no odor at the time of cutting, and was an excellent display panel pattern.

Comparative Example 1 A photosensitive resin laminate was produced in the same manner as in Example 1 except that a phenol board having a thickness of 2.0 mm and a total light transmittance of 0% was used as a support. Next, after the obtained photosensitive resin laminate is left for one day, it is cut into a predetermined size with a circular saw-type cutter, covered with a negative, subjected to exposure, development, drying and post-exposure treatment, and the A pattern was formed. The resulting display panel pattern is opaque,
Odor was generated at the time of cutting, and the display panel pattern was inferior in design.

Example 2 A modified polycarbonate resin obtained by adding 50 mol% of 1,6 hexanediol to bisphenol A having a thickness of 2 mm and a total light transmittance of 82% and copolymerizing it in Example 1 was used. Was performed in the same manner as in Example 1 to produce a photosensitive resin laminate. Next, after the obtained photosensitive resin laminate is left for one day, it is cut into a predetermined size with a circular saw-type cutter, covered with a negative, subjected to exposure, development, drying and post-exposure treatment, and the A pattern was formed. The obtained display panel pattern is transparent, there is no odor at the time of cutting,
The display panel pattern was excellent in design.

Example 3 In Example 1, except that a blended resin in which 30% of an ABS resin was blended with a polycarbonate resin synthesized from bisphenol A having a thickness of 3.0 mm and a total light transmittance of 85% was used as a support. Was performed in the same manner as in Example 1 to produce a photosensitive resin laminate. Next, after the obtained photosensitive resin laminate is left for one day, it is cut into a predetermined size with a circular saw-type cutter, covered with a negative, subjected to exposure, development, drying and post-exposure treatment, and the A pattern was formed. The obtained display panel pattern was transparent, had no odor at the time of cutting, and was an excellent display panel pattern.

Example 4 Photosensitivity was the same as in Example 1 except that a polycarbonate resin synthesized from neopentyl glycol having a thickness of 2.0 mm and a total light transmittance of 83% was used as the support in Example 1. A resin laminate was manufactured. Next, after the obtained photosensitive resin laminate is left for one day, it is cut into a predetermined size with a circular saw-type cutter, covered with a negative, subjected to exposure, development, drying and post-exposure treatment, and the A pattern was formed. The obtained display panel pattern was transparent, had no odor at the time of cutting, and was an excellent display panel pattern.

[0027]

As described above, the photosensitive resin laminate of the present invention can be used as a photosensitive resin suitable as a sign board having excellent transparency and excellent design without generating odor when the support is cut. It is great to provide laminates and contribute to the industry.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H025 AB20 AC01 DA18 DA35 4F100 AK01B AK41G AK45A AK48 AK51G BA02 BA25 CB00 GB90 JN01 JN17B YY00A

Claims (3)

[Claims] 1. A photosensitive resin laminate having at least a photosensitive resin layer on a support with an adhesive layer interposed therebetween, wherein the support is a polycarbonate resin. 2. The support according to claim 1, wherein the thickness of the support is 1 mm or more.
The photosensitive resin laminate according to the above. 3. A plate for a sign plate comprising the photosensitive resin laminate according to claim 1 or 2.