WO2013084734A1 - 積層シートの製造方法及び製造装置 - Google Patents

積層シートの製造方法及び製造装置 Download PDF

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Publication number
WO2013084734A1
WO2013084734A1 PCT/JP2012/080425 JP2012080425W WO2013084734A1 WO 2013084734 A1 WO2013084734 A1 WO 2013084734A1 JP 2012080425 W JP2012080425 W JP 2012080425W WO 2013084734 A1 WO2013084734 A1 WO 2013084734A1
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Prior art keywords
laminated sheet
laminated
laminating
film
cutting
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Ceased
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PCT/JP2012/080425
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English (en)
French (fr)
Japanese (ja)
Inventor
浅倉　孝郎
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Fujifilm Corp
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Fujifilm Corp
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Publication of WO2013084734A1 publication Critical patent/WO2013084734A1/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/485—Multi-component adhesives, i.e. chemically curing as a result of the mixing of said multi-components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/482—Drying adhesives, e.g. solvent based adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/526—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by printing or by transfer from the surfaces of elements carrying the adhesive, e.g. using brushes, pads, rollers, stencils or silk screens
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    • B29C66/733—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7336—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light
    • B29C66/73365—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light at least one of the parts to be joined being transparent or translucent to visible light
    • B29C66/73366—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being opaque, transparent or translucent to visible light at least one of the parts to be joined being transparent or translucent to visible light both parts to be joined being transparent or translucent to visible light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only

Definitions

  • the present invention relates to a method and apparatus for producing a laminated sheet, and in particular, a laminated sheet excellent in use as a transparent support for stereoscopic image printing sheets used for 3D printing and 3D printing and as a substrate for a diffusion cover for LED lighting.
  • the present invention relates to a manufacturing method and a manufacturing apparatus.
  • a recording sheet for recording a stereoscopic image there is a stereoscopic image printing sheet having a lens layer (for example, a lenticular lens) on one side of a resin-made transparent support and an image receiving layer for recording an image on the other side.
  • a lens layer for example, a lenticular lens
  • a lenticular lens sheet is bonded to one side of a transparent support (base material) made of paper, synthetic paper, plastic film, etc., and the dye receiving image is applied to the back side of the transparent support and dried.
  • a heat-sensitive transfer recording sheet for stereoscopic images provided with a layer is disclosed.
  • LEDs have started to enter the lighting field.
  • a point that differs greatly from incandescent light bulbs and fluorescent lamps that have been used up to now is that LEDs are point light sources.
  • the diffusion cover for LED illumination to which the light diffusibility which gives large concealment property and raises the utilization efficiency of light was given so that the lamp image of a point light source might be lost is calculated
  • a resin film for the illumination cover it is necessary to have rigidity sufficient to prevent falling or to bend by wind pressure or pressing. Therefore, a method of obtaining rigidity by sticking as thick a general-purpose resin film as possible with an adhesive for dry lamination to a thickness of 500 ⁇ m or more has been performed.
  • one resin film is fed from a roll, and after applying the adhesive for dry lamination on one side of the film, the solvent of the adhesive is dried at about 80 to 120 ° C. .
  • the method of sticking the other general purpose resin film on the adhesive surface which became a sticky state, and thermocompression bonding at the temperature comparable as the above-mentioned drying temperature is common (for example, nonpatent literature 1, patent literature 2).
  • the laminated film bonded in this way is cut into a predetermined size according to the use such as a stereoscopic image printing sheet, an LED illumination diffusion cover, and the like.
  • the conventional laminating method can also be used to wind the laminated film during winding (after the laminating step, the laminated film is once wound) Case), the adhesive surface of the adhesive for dry lamination is difficult to peel off after cutting the laminated film.
  • the adhesive surface of the adhesive for dry lamination is easily peeled off during transportation, winding and cutting of the laminated film.
  • the laminated sheet obtained by cutting into a predetermined size is likely to curl.
  • the resin film before pasting and the laminated film after pasting are wrapped and transported on a transport roller or the like, so that an external force in the bending direction is applied, and the curl is easily generated by curving in the transport direction of the roller.
  • the curl generated in the laminated film remains on the laminated sheet after cutting.
  • the degree of curling of the stereoscopic image printing sheet is not problematic as long as it is 4 mm or less, but the stereoscopic image printing sheet produced by the conventional laminating method is often 4 mm or more.
  • An object of the present invention is to provide a manufacturing method and a manufacturing apparatus for a laminated sheet suitable as a three-dimensional image printing sheet, a LED illumination diffusion cover, and the like because it is free from curling and has excellent flatness.
  • the method for producing a laminated sheet of the present invention includes a laminating step of laminating a plurality of strip-shaped resin films conveyed to achieve the above object with an adhesive for dry lamination, and forming the laminated film with a predetermined size.
  • the laminating film is formed by pressing the plurality of resin films at room temperature with a pair of laminating rollers,
  • the cutting step the laminated film is cut into a predetermined size before the solidification reaction of the adhesive for dry lamination in the laminated film is completed, and the laminated sheet obtained by the cutting is flattened after the cutting step. It has a flat surface stationary process which complete
  • room temperature pressure bonding refers to pressure bonding of a plurality of resin films in a room temperature state in which the pair of laminating rollers are not specially heated.
  • the roller surface temperature is in the range of 20 to 40 ° C.
  • it includes not heating the bonded resin film before bonding.
  • the laminated film having flexibility has flexibility.
  • “flexibility” of a laminated film or laminated sheet means that the adhesive surface is peeled off or the bent shape is fixed even when an external force in the bending direction acts on the laminated film or laminated sheet. Say no state. For example, the presence or absence of flexibility can be tested by winding a laminated film or laminated sheet around a 30 mm diameter cylinder.
  • the laminated film is cut to a predetermined size before the solidification reaction of the dry laminating adhesive is completed, and the laminated sheet is flattened in the flat surface standing step after the cutting step.
  • the solidification reaction was terminated in the state of standing on the top. As a result, a laminated sheet having no flatness and excellent flatness can be produced.
  • the state where the “solidification reaction is completed” is a state opposite to the above-mentioned “flexibility”, and when an external force in the bending direction is applied to the laminated film or the laminated sheet, the adhesive surface may be peeled off. A state where the bent shape is fixed.
  • the laminated film and the laminated sheet have flexibility in the bonding step and the cutting step leading to the flat surface standing step. Therefore, even if the force of a bending direction acts on a laminated film by conveyance and winding (when winding up before cutting) of a laminated film, an adhesive surface does not peel off or a curl is fixed.
  • timing for cutting the laminated film before the solidification reaction of the adhesive for dry lamination is completed can be grasped by a preliminary test or the like.
  • the resin film is a general-purpose resin film having a thickness of 150 to 200 ⁇ m and the thickness of the laminated sheet is 500 ⁇ m or more.
  • general-purpose resin film is not a custom-made product but a general product of resin films used for various applications, and is widely used for various applications such as food films and optical films.
  • a thick general-purpose resin film with a thickness of 150 to 200 ⁇ m By using a thick general-purpose resin film with a thickness of 150 to 200 ⁇ m, it is possible not only to achieve a desired thickness by bonding a small number of sheets, but also to reduce manufacturing costs.
  • a thick general-purpose resin film has higher rigidity than a thin resin film having a thickness of 100 ⁇ m or less as described above, it is bonded during transportation of a laminated film immediately after bonding, after winding, after cutting, etc. This is because the surface is easily peeled off and the present invention is particularly effective.
  • the flat surface standing step includes a flat surface heating step of heating the flat surface to promote the solidification reaction.
  • the heating temperature of the flat surface is preferably about 80 to 120 ° C., which is the drying temperature of the dry lamination adhesive.
  • the plurality of resin films are sandwiched between the pair of laminating rollers at a pressure of 0.2 to 0.4 MPa.
  • thermocompression bonding method sandwiching is usually performed at a pressure of about 0.4 to 0.5 MPa, but in the present invention, the pressure is lower than that. Thereby, it can prevent that the solidification reaction of the adhesive for dry lamination progresses too much.
  • the corona discharge treatment step of performing a corona discharge treatment on the bonding surface side of the resin film not provided with the dry laminating adhesive is provided before the bonding step. It is preferable.
  • the adhesiveness with the dry laminating adhesive is improved.
  • the adhesive force can be improved even in a state where the solidification reaction of the dry laminating adhesive is not completed.
  • the strength of the corona discharge treatment is preferably 0.1 kW / m 2 or more.
  • the two resin sheets fed out from the state wound in a roll shape by the feeding device are bonded together, and the inside of the roll of one resin film It is preferable that the side surface and the roll outer surface of the other resin film are bonded together.
  • the two resin films are wound by combining the roll inner surface of one resin film and the roll outer surface of the other resin film. If they are bonded so as to cancel the wrinkles, curling can be further prevented.
  • the production line for the laminated sheet has a roller conveying step for conveying the resin film and the laminated film with a roller, and a wrap angle of the conveyed film with respect to the roller Is 90 ° or more, the diameter of the roller is preferably 50 mm or more, and the transport tension is preferably 100 N or more and 300 N or less.
  • the wrap angle of the film with respect to the roller is 90 ° or more
  • the roller diameter is 50 mm or more
  • the conveyance tension is 100 N or more and 300 N or less.
  • the solidification reaction of the adhesive for dry lamination does not end within 24 hours when the bonding step is performed by room temperature pressure bonding.
  • the solidification reaction of the adhesive for dry lamination is completed in about 4 days.
  • the laminated sheet has a lens layer on one side and a transparent support or light source in the production of a three-dimensional image printing sheet having an image receiving layer for recording an image on the other side. It is preferable to be manufactured as a diffusion cover for LED lighting.
  • the laminated sheet manufacturing apparatus of the present invention is provided with a laminating apparatus that forms a laminated film by laminating a plurality of belt-shaped resin films to be conveyed with an adhesive for dry lamination, and the laminated film is predetermined.
  • a laminated sheet manufacturing apparatus provided with a cutting device that cuts into a laminated sheet of a size
  • the laminating temperature is a room temperature state when laminating the plurality of resin films with a pair of laminating rollers in the laminating apparatus
  • a control means for performing line control of the manufacturing apparatus so that the laminated film is cut to a predetermined size before the dry reaction of the dry lamination adhesive in the laminated film is completed.
  • the laminated sheet obtained by the cutting is placed on a flat surface in a stage subsequent to the cutting device, and the solid sheet is fixed. With a flat surface to stand apparatus to terminate the reaction.
  • the laminating temperature adjusting means adjusts the roller surface temperature of the pair of laminating rollers to 20 to 40 ° C.
  • the laminating temperature adjusting means is provided in the laminating apparatus to adjust the laminating temperature to room temperature (preferably 20 to 40 ° C.), and the adhesive for dry lamination in the laminated film is controlled by the control means for controlling the line of the manufacturing apparatus.
  • the laminated film was cut into a predetermined size with a cutting device. And the solidification reaction was made to complete
  • the flat surface stationary device includes a heating device for heating the flat surface.
  • the heating temperature of the flat surface is preferably about 80 to 120 ° C., which is the drying temperature of the dry lamination adhesive.
  • the resulting laminated sheet may be peeled off. No curling and excellent flatness.
  • Overall configuration diagram of laminated sheet manufacturing equipment for integrated production from resin film delivery to laminated sheet manufacturing Explanatory drawing explaining a cutting device and a flat surface stationary device
  • Explanatory drawing explaining another aspect of a flat surface stationary apparatus Overall configuration diagram of a laminated sheet manufacturing apparatus in which a winding process is provided between the bonding process and the cutting process.
  • FIG. 1 shows a case where the laminated sheet produced according to the present invention is applied to a three-dimensional image printing sheet as an example of a suitable use.
  • FIG. 1 illustrates an example in which two transparent general-purpose resin films are bonded together with an adhesive for dry lamination to form a transparent support (laminated sheet), two or more sheets may be bonded together.
  • the stereoscopic image printing sheet 10 is formed in a sheet shape (for example, a square sheet) of a predetermined size (for example, 12.7 cm ⁇ 17.8 cm), and a lens is formed on one surface of the transparent support 12. It has a layer 14 (a lenticular lens is illustrated in FIG. 1) and an image receiving layer 16 for recording an image on the other side, and a hard resin layer 18 is interposed between the transparent support 12 and the image receiving layer 16. .
  • the transparent support 12 is made of two transparent general-purpose resin films 12A and 12B bonded with a dry lamination adhesive 12C.
  • the number of the lenticular lenses which comprise the lens layer 14 was shown in the example of four, it is actually comprised with many.
  • the transparent support 12 preferably has as smooth a sheet surface as possible. Further, when the lens layer 14 is formed on one surface of the transparent support 12 by the extrusion laminating method, it is necessary to withstand the heat of the molten lens layer resin extruded from the extrusion die into a sheet shape, which is relatively heat resistant. It is preferable that it is resin with high property. Specifically, polycarbonate resin, polysulfone resin, biaxially stretched polyethylene terephthalate resin (PET), and the like can be given. In particular, a biaxially stretched polyethylene terephthalate resin is preferable from the viewpoint of good smoothness.
  • the thickness of the transparent support 12 must be 300 ⁇ m or more so that no image blur occurs when an image is formed on the stereoscopic image printing sheet 10 by a printing apparatus such as a thermal transfer ink sheet apparatus or an inkjet apparatus.
  • a transparent support 12 is used in which a plurality of general-purpose resin films 12A and 12B are bonded and thickened with an adhesive 12C for dry lamination.
  • the thickness of the transparent support 12 is more preferably 400 ⁇ m or more, and particularly preferably 500 ⁇ m or more.
  • the upper limit of the thickness of the transparent support body 12 was not described, it is possible to set the upper limit to the thickness at which the transparency as the three-dimensional image printing sheet 10 becomes defective due to being too thick.
  • Examples of the resin constituting the lens layer 14 include polymethyl methacrylate resin (PMMA), polycarbonate resin, polystyrene resin, methacrylate-styrene copolymer resin (MS resin), acrylonitrile-styrene copolymer resin (AS resin), and polypropylene resin.
  • PMMA polymethyl methacrylate resin
  • MS resin methacrylate-styrene copolymer resin
  • AS resin acrylonitrile-styrene copolymer resin
  • Polypropylene resin Polyethylene resins, polyethylene terephthalate resins, glycol-modified polyethylene terephthalate resins, polyvinyl chloride resins (PVC), thermoplastic elastomers, copolymers thereof, cycloolefin polymers, and the like.
  • polymethyl methacrylate resin PMMA
  • polycarbonate resin polystyrene resin
  • methacrylate-styrene copolymer resin MS resin
  • polyethylene resin polyethylene terephthalate resin
  • glycol modified polyethylene terephthalate resin it is more preferable to use glycol-modified polyethylene terephthalate resin. preferable.
  • the lens layer 14 has a thickness (T) of 50 ⁇ m to 200 ⁇ m, and has a lenticular lens shape on its surface.
  • the lenticular lens shape is formed, for example, with a lens radius (R) of 100 ⁇ m to 200 ⁇ m, a lens height (H) of 50 ⁇ m to 100 ⁇ m, and an inter-lens distance (P) of 100 ⁇ m to 318 ⁇ m.
  • R lens radius
  • H lens height
  • P inter-lens distance
  • the lenticular lens shape means a plate-like lens array in which long, long and long shaped lenses are arranged horizontally, that is, a shape in which cylindrical lenses are two-dimensionally arranged.
  • the image receiving layer 16 may be selected from a layer suitable for both a printing material that takes in and colors the color material transferred from the thermal transfer ink sheet device and a coloring device that takes in and drops the ink droplets ejected from the ink jet device. it can.
  • FIG. 2 shows a case where the laminated sheet manufactured according to the embodiment of the present invention is applied to the substrate 22 of the LED illumination diffusion cover 20 as another preferred application.
  • the LED illumination diffusion cover 20 in FIG. 2 is a case where a transparent general-purpose resin film 22A having a thickness of about 300 ⁇ m, for example, is bonded as a dry lamination adhesive 22B to form a substrate 22 (laminated sheet). .
  • a diffusion layer 24 is formed on one surface of the substrate 22, and a hard coat layer 26 (or a low refractive index layer) is formed on the opposite surface.
  • FIG. 2 shows an example in which three transparent general-purpose resin films 22A are bonded together, two sheets or four or more sheets may be bonded together.
  • Suitable examples of the material of the general-purpose resin film 22A constituting the substrate 22 include polyester and polyolefin.
  • the polyester include polyethylene terephthalate (PET, refractive index 1.67), polyethylene naphthalate (PEN), and the like.
  • other resin films include polyamide, polyether, polystyrene, polyesteramide, polycarbonate, polyphenylene sulfide, polyether ester, polyvinyl chloride, polyacrylic acid ester, and polymethacrylic acid ester.
  • a polyester resin is preferable, and at least one of the substrates 22 is more preferably made of polyethylene terephthalate (PET).
  • PET polyethylene terephthalate
  • the polyethylene terephthalate (PET) used as the substrate 22 is preferably a polyester resin melt-extruded into a film shape and biaxially stretched vertically and horizontally. Since it is oriented and crystallized by biaxial stretching and the strength and heat resistance are improved, it is suitable for use as the substrate 22 of the LED illumination diffusion cover.
  • PET polyethylene terephthalate
  • the stretching ratio is preferably stretched by 1.5 to 7 times in the vertical and horizontal directions, more preferably about 2 to 5 times.
  • the draw ratio is within the above range, sufficient mechanical strength and uniform thickness can be obtained.
  • PET film production methods and conditions can be appropriately selected from known methods and conditions.
  • the general-purpose resin film 22A on the side where the diffusion layer is provided is made of polyethylene terephthalate, so that The near-side general-purpose resin film 22A is preferably made of other plastics.
  • a material having a refractive index lower than that of polyethylene terephthalate (PET) is preferably used.
  • PET polyethylene terephthalate
  • acrylic resin such as (refractive index 1.5).
  • the thickness of the substrate 22 can be appropriately selected according to the purpose, but is preferably in the range of 300 ⁇ m to 1000 ⁇ m, for example.
  • the laminated sheet manufacturing apparatus 28 according to the first embodiment of the present invention will be described using an example of manufacturing the transparent support 12 (laminated sheet) described above by bonding two general-purpose resin films.
  • the manufacturing apparatus 28 according to the first embodiment is a case where the two general-purpose resin films 12A and 12B are sent from the sending apparatuses 30 and 38 to the production of the laminated sheet A in an integrated manner.
  • a first transparent general-purpose resin film 12A having a thickness of, for example, 180 ⁇ m is fed from the first feeding device 30 and is fed by a number of conveying rollers 32, 32.
  • the dry lamination adhesive 12C is applied to the back surface of the fed first general-purpose resin film 12A by the application device 34 (application process).
  • the application device 34 for applying the dry lamination adhesive 12C may be any device, but the dry lamination adhesive 12C can be applied thinly and uniformly on the back surface of the first general-purpose resin film 12A. ), Slot die method, rod coating method and the like can be suitably employed.
  • the drying device 36 for drying the dry lamination adhesive 12C has a plurality of drying zones, and preferably has a low temperature drying zone 36A, a high temperature drying zone 36B, and a cooling zone 36C from the inlet side. In the cooling zone 36C, it is preferable to cool the first general-purpose resin film 12A to substantially room temperature.
  • a polyurethane adhesive composition or a two-component curable adhesive composition for dry lamination can be suitably used as the dry lamination adhesive 12C.
  • the polyurethane adhesive composition is composed of an organic polyisocyanate, an organic polyol, an oxygen acid of phosphorus or a derivative thereof, an amine compound and an epoxy resin.
  • a two-component curable adhesive composition for dry lamination comprises an organic polymer polyol component such as polyester polyol and polyurethane polyol as a main agent, a bifunctional polyisocyanate compound and a trifunctional or higher polyfunctional polyisocyanate compound as a curing agent. It is composed of an organic polyisocyanate component.
  • the second general-purpose resin film 12B is sent out from the second delivery device 38 and is transported by a large number of transport rollers 32, 32... And corona discharge on the surface (bonding surface side) of the second general-purpose resin film 12B.
  • a corona discharge process is performed by the processing device 40.
  • the strength of the corona discharge treatment is preferably 0.1 KW / m 2 or more.
  • the wrap angle of the first and second general-purpose resin films 12A and 12B to be transported by the roller with respect to the transport roller 32 is 90 ° or more and the roller diameter is 50 mm or more. Furthermore, it is preferable that the conveyance tension be 100N or more and 300N or less. Thereby, since the force of a bending direction can act as much as possible with respect to 1st and 2nd general purpose resin film 12A, 12B, generation
  • the 1st and 2nd general purpose resin films 12A and 12B are pasted together by pasting device 42 which consists of a pair of laminating rollers 42A and 42B (bonding process).
  • the first general-purpose resin film 12A and the second general-purpose resin film 12B are sandwiched (nipped) by the pair of laminating rollers 42A and 42B, and are bonded by the dry lamination adhesive 12C.
  • the laminated film 44 is formed.
  • the laminating device 42 is provided with a laminating temperature adjusting means 43 that controls the laminating temperature when the first and second general-purpose resin films 12A and 12B are sandwiched between the pair of laminating rollers 42A and 42B to be a room temperature state. It is done.
  • the roller surfaces of the pair of laminating rollers 42A and 42B are maintained at 20 to 40 ° C. (room temperature state) by the laminating temperature adjusting means 43. That is, the laminating temperature adjusting means 43 heats the roller surface to 20 to 40 ° C. when the roller surface temperature falls below 20 ° C. in winter. This prevents the dry lamination adhesive 12C from being cooled and solidified. In the summer, when the roller surface temperature exceeds 40 ° C., the roller surface is cooled to 20 to 40 ° C. Thereby, the solidification reaction of the adhesive 12C for dry lamination is delayed.
  • the roller surface temperature can be measured with a non-contact type temperature sensor such as an infrared thermometer.
  • the first general-purpose resin film 12A and the second general-purpose resin film 12B are laminated by room temperature pressure bonding rather than conventional thermocompression bonding.
  • the solidification reaction of the dry laminating adhesive 12C does not proceed during the bonding process so that it becomes solidified or close to solidification. 44 maintains flexibility.
  • the nip force for nipping between the pair of laminating rollers 42A and 42B is preferably 0.2 to 0.4 MPa, which is lower than the nip force normally practiced by conventional thermocompression bonding. Thereby, it can suppress that the solidification reaction of the adhesive 12C for dry lamination progresses too much.
  • the other general-purpose resin film is bonded to the roll outer surface. That is, since the first and second general-purpose resin films 12A and 12B sent out from the state wound in a roll shape are wrinkled, the wrinkles of the two general-purpose resin films 12A and 12B are offset. It is preferable to stick together. Thereby, curling of the laminated sheet A caused by curling can be prevented.
  • the protective films 48A and 48B are bonded to the front surface (upper surface) and the back surface (lower surface) of the laminated film 44.
  • the protective film laminating device 46 includes a pair of nip rollers 46A and 46B, a first reel device 50A around which an upper protective film 48A is wound, and a second reel device 50B around which a lower protective sheet 48B is wound. .
  • multilayer film 44 from the bonding apparatus 42 to the protective film bonding apparatus 46 can also be roller conveyance
  • the belt conveyor conveyance by the belt conveyor apparatus 47 is still more preferable. This is because the conveyance surface is preferably as flat as possible to prevent curling during conveyance of the laminated film 44.
  • the laminated film 44 is conveyed to the cutting device 52 and cut into a predetermined size (cutting process). Also in this case, the conveyance of the laminated film 44 from the protective film laminating device 46 to the cutting device 52 is more preferably a belt conveyor conveyance by the belt conveyor device 49.
  • the cutting device 52 is mainly composed of a cutting machine 54 and a work holding machine 56 as shown in FIG.
  • the cutting machine 54 includes a rotation support unit 60 that rotatably supports the rotary saw blade 58, and a lift unit 62 that moves the rotary support blade 60 up and down and moves the rotary saw blade 58 to and from the cutting position. Is done.
  • the rotation support unit 60 incorporates a motor and power transmission means (not shown), and the rotational force of the motor is transmitted to the rotary saw blade 58 via the power transmission means.
  • a hydraulic cylinder device can be suitably used.
  • the rotary saw blade 58 has been described as the cutting blade, the present invention is not limited to this, and a knife cutter, a punching blade, or the like can be used.
  • the work holding machine 56 includes a pedestal 64 having a slot-like opening 64A so that the rotary saw blade 58 can enter the cutting position, a holding unit 66 that holds the laminated film 44 from the opposite side of the pedestal 64, and a holding unit 66. And moving means 68 for moving forward and backward with respect to the pedestal 64.
  • a slot-like opening 66A is also formed on the base 64 side of the holding portion 66 so that the rotary saw blade 58 can enter the cutting position.
  • the moving means 68 for example, a hydraulic cylinder device can be suitably used.
  • the laminated film 44 is cut into a predetermined size before the solidification reaction of the dry lamination adhesive 12C of the laminated film 44 is completed. Thereby, the laminated sheet A is obtained.
  • the laminated sheet A cut to a predetermined size is transported to the flat surface stationary device 70, where the flat surface is stationary.
  • the flat surface stationary device 70 mainly includes a belt conveyor device 74 provided with an endless belt 72 (for example, a metal belt such as stainless steel) having a smooth surface, and heating for heating the endless belt 72.
  • a belt conveyor device 74 provided with an endless belt 72 (for example, a metal belt such as stainless steel) having a smooth surface, and heating for heating the endless belt 72.
  • Device 76 for example, a metal belt such as stainless steel
  • the endless belt 72 is wound around a pair of rollers 78 and 78 that are spaced apart from each other by a predetermined distance in the horizontal direction, and moves around the pair of rollers 78 and 78. As a result, a flat surface 72 ⁇ / b> A is formed on the upper circumferential surface of the endless belt 72 for transporting the laminated sheet A in a stationary state.
  • the endless belt 72 that moves around is heated by the heating device 76.
  • the heating temperature of the endless belt 72 is preferably in the range of 80 to 120 ° C., which is equivalent to the drying temperature of the dry lamination adhesive 12C.
  • the laminated sheet A obtained by cutting is transported to the next stacking device 82 in a state of being stationary on the flat surface 72A of the endless belt 72. Then, the solidification reaction is terminated by heating the dry lamination adhesive 12 ⁇ / b> C in the laminated sheet A by the endless belt 72 heated by the heating device 76 during the conveyance.
  • the laminated film 44 and the laminated sheet A are flexible in the bonding step and the cutting step leading to the flat surface standing step. It has sex. Thereby, even if the force of a bending direction acts on the laminated
  • the surface can be prevented from peeling off or curling.
  • the laminated sheet manufacturing apparatus 28 solidifies the dry lamination adhesive 12 ⁇ / b> C until the laminated film 44 is laminated by the laminating apparatus 42 and is cut into the laminated sheet A having a predetermined size by the cutting apparatus 52. It is necessary not to terminate the reaction.
  • the manufacturing apparatus 28 is provided with a control means 80 for performing line control.
  • the line control of the control means 80 in the case of integrated production from the delivery from the delivery devices 30 and 38 of the two general-purpose resin films 12A and 12B to the production of the laminated sheet A includes the control of the line conveyance speed and the temperature of the line environment. There is control. That is, by controlling the line conveyance speed and the line environmental temperature, the time until the solidification reaction of the dry lamination adhesive 12C is controlled. Thus, the solidification reaction of the dry laminating adhesive 12 ⁇ / b> C is not terminated until the laminated film 44 is laminated by the laminating device 42 and is cut into the laminated sheet A having a predetermined size by the cutting device 52.
  • a relationship between a plurality of line environmental temperatures and an elapsed time until the solidification reaction of the dry lamination adhesive 12C at that time is completed by a preliminary test or the like may be obtained in advance and input to the control program of the control means 80. .
  • FIG. 5 shows another embodiment of the flat surface stationary device 70.
  • One belt conveyor device 74 and a heating device 76 described in FIG. 4 are further provided on the opposite side of the laminated sheet A, and a pair of endless shapes are provided.
  • the laminated sheet A is sandwiched between the belts 72 and 72.
  • the laminated sheet A is sandwiched between the pair of endless belts 72, 72, and the laminated sheet A is heated by the heating device 76 from the front and back of the laminated sheet A in a state where the laminated sheet A is surely flattened.
  • the solidification reaction ends. Therefore, it is possible to produce a laminated sheet A that is free from curling and has excellent flat surface properties.
  • the heating device 76 may be omitted.
  • the laminated sheet A that has finished the flat surface stationary step is sent to the accumulation device 82 and accumulated.
  • the laminated sheet manufacturing apparatus 84 in the second embodiment shown in FIG. 6 is a case where a winding device 86 for temporarily winding the laminated film 44 is provided between the bonding device 42 and the cutting device 52 described above. is there. Note that the same devices and members as those in FIG.
  • the laminated film 44 formed by the laminating device 42 is once wound up into a roll shape by the winding device 86.
  • the laminated film 44 taken up by the take-up device 86 is stored at a predetermined storage temperature for a predetermined time, and then rewound, and the protective film laminating device 46, the cutting device 52, and the flat surface stationary device 70 are wound. It is conveyed sequentially.
  • control means 80 is wound and stored in the winding device 86 so that the laminated film 44 can be cut by the cutting device 52 before the solidification reaction of the dry lamination adhesive 12C in the laminated film 44 is completed.
  • the storage time and storage temperature of the laminated film 44 are controlled.
  • the laminated film 44 wound around the winding device 86 is stored at room temperature, there is no problem if the laminated film 44 is unwound within 24 hours after winding and cut into a predetermined size by the cutting device 52.
  • the timing for cutting the laminated film 44 can also be adjusted. With this timing adjustment, the laminated film 44 can be unwound from the winding device 86 and cut and allowed to stand on a flat surface shortly before the solidification reaction of the dry lamination adhesive 12C is completed. Thereby, the heating device 76 of the flat surface stationary device 70 can be omitted.
  • the laminated sheet produced in the present invention is suitable for a stereoscopic image printing sheet and an LED illumination diffusion cover.
  • a reservoir device for preventing the film from loosening while the transport is stopped is provided in the manufacturing lines of the manufacturing devices 28 and 84. Provided.
  • DESCRIPTION OF SYMBOLS 10 Three-dimensional image printing sheet, 10A ... Three-dimensional image printing sheet original, 12 ... Transparent support, 12A ... First general-purpose resin film, 12B ... Second general-purpose resin film, 12C ... Adhesive for dry lamination, 14 ... Lens Layer, 16 ... image receiving layer, 18 ... hard resin layer, 20 ... diffusion cover for LED illumination, 22 ... substrate, 24 ... diffusion layer, 26 ... hard coat layer, 28 ... manufacturing apparatus (first embodiment), DESCRIPTION OF SYMBOLS 30 ... 1st delivery apparatus, 32 ... Conveyance roller, 34 ... Application
  • Pasting apparatus 43 ... Laminate temperature adjustment means, 44 ... Laminated film, 46 ... Laminating device, 47 ... Belt conveyor device, 48A ... Upper protective film, 48B ... Lower protective film, 49 ... Belt conveyor device, 50A ... First reel device, 50B ... No. Reel device 52 ... Cutting device 54 ... Cutting machine 56 ... Work holding machine 58 ... Rotating saw blade 60 ... Rotating support part 62 ... Elevating part 64 ... Pedestal 66 ... Pressing part 68 ... Moving means DESCRIPTION OF SYMBOLS 70 ... Flat surface stationary apparatus, 72 ... Endless belt, 72A ... Flat surface, 74 ... Belt conveyor apparatus, 76 ... Heating apparatus, 78 ... Roller, 80 ... Control means, 82 ... Accumulation apparatus, 84 ... Manufacturing apparatus (No. 1) Embodiment 2), A ... laminated sheet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
PCT/JP2012/080425 2011-12-09 2012-11-26 積層シートの製造方法及び製造装置 Ceased WO2013084734A1 (ja)

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KR101906819B1 (ko) * 2016-09-26 2018-12-05 주식회사 신성소재 조명등 보호커버시트 제조장치와 제조방법 및 상기 방법으로 제조된 조명등 보호커버시트
EP3598863A4 (en) 2017-03-13 2020-03-18 FUJIFILM Corporation ELECTROMAGNETIC SHAFT SHIELDING ELEMENT
JP6866480B2 (ja) 2017-06-21 2021-04-28 富士フイルム株式会社 加飾フィルム
CN107244130A (zh) * 2017-07-25 2017-10-13 盐城精通源机械有限公司 一种多层拉料横切机
KR20200044057A (ko) 2017-09-29 2020-04-28 후지필름 가부시키가이샤 적층체
JP7465444B2 (ja) * 2020-04-01 2024-04-11 大日本印刷株式会社 熱転写受像シート用支持体、熱転写受像シート、熱転写受像シートの製造方法、熱転写受像シート用支持体の製造方法及びシート貼合装置
JP2024057837A (ja) 2022-10-13 2024-04-25 日東電工株式会社 情報コード付シートの製造方法およびフィルムチップの製造方法
JP2024057835A (ja) 2022-10-13 2024-04-25 日東電工株式会社 マーク付フィルムチップの製造方法
JP2024057838A (ja) 2022-10-13 2024-04-25 日東電工株式会社 情報コード付シート
JP2024057836A (ja) 2022-10-13 2024-04-25 日東電工株式会社 積層シートの製造方法および光学積層体の製造方法

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