JP2014231194A - Decorative laminate for solid display and production method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative laminate for solid display which is easily and quickly producible.SOLUTION: A decorative laminate for solid display includes a transparent surface substrate 11 composed of a thermoplastic resin and a decorative layer 13 arranged on the back-surface side of the surface substrate 11 and has a curved-side edge part 1a formed by high-frequency induction heating under pressing by a Thomson blade 5 applied with a high-frequency electric field and a cut part 1b punched by the Thomson blade 5, throughout the circumference.

Description

  The present invention relates to a decorative laminate for stereoscopic display and a method for producing the same.

  Conventionally, a decorative laminate for stereoscopic display is a laminate in which a decorative layer made of a metal vapor deposition layer is provided on the back side of a transparent surface base material (for example, see Patent Document 1) by pressing an upper mold and a lower mold. After being formed into a three-dimensional shape, it was manufactured by cutting with a cutting machine such as a cutting machine.

JP-A-6-128537

  However, there is a problem in that it requires time and labor for manufacturing because it requires a mold and apparatus for a three-dimensional molding process, a cutting device for a cutting process, and a conveyance process (apparatus) for connecting the three-dimensional molding process and the cutting process. In addition, there is a problem that the manufacturing equipment becomes large.

  Then, this invention aims at provision of the decorative laminated body for three-dimensional displays which can be manufactured easily and rapidly, and its manufacturing method.

In order to achieve the above object, the decorative laminate for stereoscopic display of the present invention has a transparent surface base material made of a thermoplastic resin and a decorative layer disposed on the back side of the surface base material. A curved side edge formed by high frequency dielectric heating while being pressed by a Thomson blade to which a high frequency electric field is applied, and a cut portion punched out by the Thomson blade are provided over the entire circumference.
The cutting portion is formed by punching the Thomson blade in which application of the high frequency electric field is stopped.
The decorative layer includes at least one of an ink layer, a metal vapor deposition layer, and an ink layer containing a metal.
Moreover, the said surface base material sets tear strength to 410-1800 kg / cm < ² >, and sets thickness to 15-1000 micrometers. (Preferably, the thickness is 30 to 250 μm.)

In addition, the method for producing a decorative laminate for stereoscopic display according to the present invention comprises a laminate having a transparent surface base material made of a thermoplastic resin and a decorative layer disposed on the back side of the surface base material. In this manufacturing method, high-frequency dielectric heating is performed while pressing with a Thomson blade to which an electric field is applied, and the curved side edge portion and the cut portion are formed over the entire circumference by punching with the Thomson blade.
In addition, before the laminate is punched with the Thomson blade, the application of the high-frequency electric field to the Thomson blade is stopped.

  According to the present invention, the three-dimensional molding step and the cutting step can be performed continuously with the same apparatus (equipment), and can be manufactured quickly, and the three-dimensional molding die is not required, and the facility is simplified and the running cost is reduced. Can do. The curved side edges that produce a three-dimensional shape can be finished reliably and smoothly and beautifully with inexpensive equipment. Only the vicinity of the Thomson blade (near the planned cutting boundary) is subjected to high-frequency dielectric heating, and even if the laminate is composed of various materials having a difference in thermal shrinkage and linear expansion, deformation and wrinkle do not occur, and the laminate Can be easily processed with good adhesion between the layers (the occurrence of defective products can be reduced). Three-dimensional molding time and cutting time can be shortened.

It is a cross-sectional front view for demonstrating the manufacturing method of the decoration laminated body for three-dimensional displays which concerns on this invention. It is a sectional front view of a press heating process. It is a section front view of a cutting process. It is a sectional front view of a completed state. It is a top view which shows one Embodiment of the decoration laminated body for three-dimensional displays of this invention. It is a section front view showing an example of a layered product. It is a cross-sectional front view which shows the other example of a laminated body. It is a cross-sectional front view which shows another example of a laminated body.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
As shown in FIG. 1, a method for producing a decorative laminate for stereoscopic display according to the present invention includes a transparent surface base material 11 made of a thermoplastic resin, and a decorative layer 13 disposed on the back side of the surface base material 11. And a backing substrate (backup substrate) 14 disposed on the back side of the decorative layer 13, a release liner (release paper) 2 that forms the back surface Se, and affixing to the front surface of the release liner 2 A laminate S (for material) having an adhesive layer 12 is prepared.

  The prepared laminate S is placed on a horizontal surface of the cradle 6 and the laminate S is arranged so that the scheduled cutting boundary (contour outline) L1 of the laminate S corresponds to the cutting edge 5a of the Thomson blade 5. Position.

  Then, a high frequency electric field is applied to the Thomson blade 5 and the cradle 6, in other words, a high frequency voltage is applied between the Thomson blade 5 and the cradle 6, and the laminate S is sandwiched between the Thomson blade 5 and the cradle 6. The body S is subjected to high frequency dielectric heating. That is, using the Thomson blade 5 as one electrode for high-frequency dielectric heating and the cradle 6 as the other electrode for high-frequency dielectric heating, only the vicinity of the Thomson blade 5 (near the planned cutting boundary L1) is locally, High frequency dielectric heating. In the case where the laminate S is thin and sparks when an electric current flows, an insulating sheet or the like may be sandwiched between the laminate S and the cradle 6.

  As shown in FIG. 2, high-frequency dielectric heating is performed while pressing the surface Sd (the surface of the surface base material 11) of the laminate S with the Thomson blade 5 to which a high-frequency electric field is applied (pressure heating step). ), Extending the surface base material 11 and bending it from the surface Sd toward the cutting edge 5a of the Thomson blade 5 in a rounded shape (the thickness dimension becomes smaller as approaching the planned cutting boundary L1 not shown in FIG. 2) The curved edge 1a is formed and the vicinity of the blade edge 5a is welded by high frequency dielectric heating.

  With the Thomson blade 5 to which a high-frequency electric field is applied, after pressing the surface Sd to a predetermined depth (after the Thomson blade 5 is lowered by a predetermined stroke), the application of the high-frequency electric field to the Thomson blade 5 is stopped, The high frequency dielectric heating (internal heating) of the laminate S is stopped.

Then, as shown in FIG. 3, the laminated body S that is not in a high-frequency dielectric heating state from the position where the Thomson blade 5 is stopped from being applied (without releasing the Thomson blade 5 upward), as shown in FIG. Along the planned cutting boundary L1, the lowermost release liner 2 is punched and cut (cutting step).
Here, the surface Sd and the back surface Se of the stacked body S are formed of a dielectric (insulator) that is difficult to conduct electricity. Further, as a whole, it is formed as a dielectric (insulator) that hardly conducts electricity in the stacking direction. However, the decorative layer 13 in the laminated body S has a higher conductivity than the surface Sd and the back surface Se (which has an ink for decoration and a metallic component for obtaining glitter).
However, since the above-described cutting (punching) step is performed by stopping the application of the high-frequency electric field to the Thomson blade 5, even if the Thomson blade 5 comes into contact with the conductive decorative layer 13, a short (spark) occurs. It is prevented.

  As an example of a series of processing conditions, high frequency 40.46 MHz, output 7 kW, pressure 2-6 Kgf, preheating 50-100 ° C., preheating time 0-30 seconds (preferably 0.5-30 seconds), energization (application) ) Molding can be performed within the range of 0.5 to 20 seconds, cooling time of 0 to 20 seconds (preferably, 1 to 20 seconds).

  As shown in FIGS. 4 and 5, after cutting with the Thomson blade 5, it is curved in a rounded shape from the surface 1 d to the back surface 1 e (thickness dimension becomes smaller as it approaches the cutting surface), and it is a smooth and beautiful curve. A trapezoidal mountain-shaped decorative laminate for three-dimensional display having a side edge portion 1a and a cutting portion (cutting surface) 1b formed by the Thomson blade 5 over the entire circumference, and the vicinity of the cutting portion 1b is welded by high-frequency dielectric heating. Body 1 is obtained.

Here, the surface base material 11 is set to a tear strength of 410 to 1800 Kg / cm ² (ASTM D638 / 651) and a thickness of 15 to 1000 μm. Preferably, it sets to 30-250 micrometers.
By setting in this way, it is possible to easily form the bent side edge portion 1a while sufficiently withstanding the pressing by the Thomson blade 5 during high-frequency dielectric heating. That is, if it is less than the lower limit value, tearing may occur and the Thomson blade 5 may come into contact with the conductive inner layer (decorative layer 13 or the like) to cause a short circuit. Therefore, it is difficult to form the curved side edge 1a which is not smoothly bent and is smooth and beautiful.

The backing substrate 14 has a tear strength of 100 to 800 kg / cm ² (ASTM D638 / 651) and a thickness of 15 to 1500 μm, preferably 500 to 1500 μm. By setting in this way, the side edge portion is bent and deformed with a large R by pressing with the Thomson blade 5 during high-frequency dielectric heating so that a beautiful stereoscopic effect can be easily obtained. That is, if it is less than the lower limit, the three-dimensional effect is poor and the decoration ability is reduced. If the upper limit value is exceeded, the Thomson blade 5 must be pressed strongly, and the surface base material 11 may be cut during high-frequency dielectric heating and contact with the conductive inner layer to cause a short circuit. In addition, the adhesive layer 12 to be attached is a layer for attaching to a counterpart member (attached member) such as a vehicle after the release liner 2 is peeled off.

  In addition, although the laminated body S was simplified and illustrated in FIG. 1 thru | or FIG. 4, as shown in FIG. 6, the surface base material 11, the release liner 2, the sticking adhesive layer 12, and the surface A decorative layer 13 formed of a metal vapor-deposited layer 31 formed on the back surface of the base material 11, a backing base material 14, and an adhesive layer 15 for peeling prevention for bringing the decorative layer 13 and the backing base material 14 into close contact with each other. (Adhesive layer 15A for backing substrate), intermediate substrate 16 disposed between adhesive layer 12 to be attached and backing substrate 14, and backing substrate 14 and intermediate substrate 16 are integrally adhered. And an adhesive layer 15 for preventing peeling (adhesive layer 15B for intermediate base material).

  Further, as shown in FIG. 7, the laminate S includes a surface base material 11, a release liner 2, a sticking adhesive layer 12, a glass bead layer 32 disposed on the back side of the surface base material 11, and A decorative layer 13 formed of a metal vapor deposition layer 31 formed on the back surface of the glass bead layer 32, a backing substrate 14, an adhesive layer 15A for backing substrate, and between the surface substrate 11 and the glass bead layer 32. It may have an acrylic resin layer 17 to be disposed, and an adhesive layer 15 for preventing peeling (adhesive layer 15C for acrylic resin) for bringing the surface base material 11 and the acrylic resin layer 17 into close contact with each other. .

  Further, as shown in FIG. 8, the surface base material 11, the release liner 2, the sticking adhesive layer 12, the ink layer disposed on the back surface of the surface base material 11 to form a mirror surface and containing a metal It may have a (mirror surface ink layer) 33 and a decorative layer 13 composed of a (black) ink layer 34 disposed on the back surface of the metal-containing ink layer 33.

  The decoration layer 13 only needs to have at least one of the ink layer 34, the metal vapor deposition layer 31, and the ink layer 33 containing a metal. Further, as long as the decorative layer 13 is disposed on the back surface side of the surface base material 11, a laminate S other than those illustrated in FIGS. 6 to 8 may be used. 6 or 7, the backing substrate 14 is omitted, or a metal vapor deposition layer 31 and a decoration layer 13 having a metal-containing ink layer 33 are laminated.

  Next, the stereoscopic display decorative laminate of the present invention is the stereoscopic display decorative laminate 1 obtained by the above-described manufacturing method, which includes a surface base material 11 and a decorative layer 13, and further includes a high-frequency electric field. The curved side edge 1a formed by high-frequency dielectric heating while being pressed by the Thomson blade 5 to which is applied is punched by the Thomson blade 5 to which the application of the high-frequency electric field is stopped, and comes into contact with the curved side edge 1a. And a cutting portion 1b.

And the surface base material 11 sets tear strength to 410-1800 kg / cm < ² >, and sets thickness to 15-1000 micrometers, Preferably, it is set to 30-250 micrometers.
The decoration layer 13 has at least one of the ink layer 34, the metal vapor deposition layer 31, and the ink layer 33 containing metal.
The backing substrate 14 is set to a tear strength of 100 to 800 Kg / cm ² and a thickness of 15 to 1500 μm, preferably 500 to 1500 μm.

  As described above, the decorative laminate for stereoscopic display of the present invention has the transparent surface base material 11 made of a thermoplastic resin, and the decorative layer 13 disposed on the back side of the surface base material 11, and has a high frequency Since it has a curved side edge 1a formed by high-frequency dielectric heating while being pressed by a Thomson blade 5 to which an electric field is applied, and a cut portion 1b punched by the Thomson blade 5 over the entire circumference, The molding process and the cutting process can be performed continuously with the same equipment and can be manufactured quickly, and a three-dimensional molding die is not required, and the equipment can be simplified and the running cost can be reduced. The curved side edge 1a that produces a three-dimensional shape can be finished reliably and smoothly and beautifully with inexpensive equipment. Only the vicinity of the Thomson blade 5 (the vicinity of the planned cutting boundary L1) is subjected to high-frequency dielectric heating, and even if the laminate S is made of various materials having a difference in thermal contraction and linear expansion, no deformation or wrinkle occurs. 3D molding, welding and cutting can be easily performed (occurrence of defective products can be reduced). Three-dimensional molding time and cutting time can be shortened.

  In addition, since the cutting portion 1b is formed by punching the Thomson blade 5 in which the application of the high-frequency electric field is stopped, the Thomson blade 5 can be prevented from being short-circuited (sparked), and the occurrence of defective products can be reduced easily and efficiently. it can. A beautiful cut portion 1b can be obtained, and the beauty and quality can be improved.

  In addition, the decorative layer 13 has at least one of the ink layer 34, the metal vapor-deposited layer 31, and the ink layer 33 containing the metal, so that various colors and patterns can be obtained, and it has excellent aesthetics and decorative properties. Can be improved. There are no particular restrictions on the composition of the ink, and there are no particular restrictions on the pigments and dyes. As the pigment, glass beads, acrylic beads, phosphorescent pigments, fluorescent pigments and the like can be used. In addition, according to the present invention, carbon black having high versatility and conductivity can be used as a pigment (without sparking). In particular, the metal vapor deposition layer 31 and the ink layer 33 containing a metal can improve decorativeness and obtain a high-class feeling due to the unique gloss (brightness) of the metal component.

The surface base material 11 has a tear strength set to 410 to 1800 Kg / cm ² and a thickness set to 15 to 1000 μm, preferably 30 to 250 μm. Therefore, the surface substrate 11 is pressed by the Thomson blade 5 during high frequency dielectric heating. It is possible to easily form the curved side edge portion 1a that is sufficiently durable and smooth. The surface substrate 11 during high-frequency dielectric heating is not torn, and short-circuiting can be prevented and processing can be performed safely, and the occurrence of defective products can be reduced.

  Further, the method for producing a decorative laminate for stereoscopic display of the present invention is a laminate S having a transparent surface base material 11 made of a thermoplastic resin and a decorative layer 13 disposed on the back side of the surface base material 11. Is pressed with a Thomson blade 5 to which a high-frequency electric field is applied, and is subjected to high-frequency dielectric heating, and punched with the Thomson blade 5 to form the curved side edge portion 1a and the cutting portion 1b over the entire circumference. The process can be carried out continuously with the same equipment and can be manufactured quickly, and there is no need for a three-dimensional molding die, thereby simplifying the equipment and reducing running costs. The curved side edge 1a that produces a three-dimensional shape can be finished reliably and smoothly and beautifully with inexpensive equipment. Only the vicinity of the Thomson blade 5 (the vicinity of the planned cutting boundary L1) is subjected to high-frequency dielectric heating, and even if the laminate S is made of various materials having a difference in thermal contraction and linear expansion, no deformation or wrinkle occurs. 3D molding, welding and cutting can be easily performed (occurrence of defective products can be reduced). Three-dimensional molding time and cutting time can be shortened.

  In addition, since the application of the high-frequency electric field to the Thomson blade 5 is stopped before the laminated body S is punched with the Thomson blade 5, a short circuit (spark) of the Thomson blade 5 can be prevented, and the occurrence of defective products is easy and easy. Can be manufactured efficiently. A beautiful cut portion 1b can be obtained, and the beauty and quality can be improved.

DESCRIPTION OF SYMBOLS 1 Decorative laminate for 3D display 1a Curved side edge 1b Cutting part 5 Thomson blade
11 Surface substrate
13 Decorative layer
31 Metal deposition layer
33 Ink layer containing metal
34 Ink layer S Laminate

Claims (6)

A transparent surface base material (11) made of a thermoplastic resin, and a decorative layer (13) disposed on the back side of the surface base material (11),
A curved side edge (1a) formed by high frequency dielectric heating while being pressed by a Thomson blade (5) to which a high frequency electric field is applied, and a cut portion (1b) punched by the Thomson blade (5) And a decorative laminate for stereoscopic display, characterized in that   3. The decorative laminate for stereoscopic display according to claim 1, wherein the cut portion (1 b) is formed by punching the Thomson blade (5) from which application of a high-frequency electric field is stopped.   The three-dimensional display according to claim 1 or 2, wherein the decoration layer (13) has at least one of an ink layer (34), a metal vapor deposition layer (31), and an ink layer (33) containing a metal. Decorative laminates. The decorative laminate for stereoscopic display according to claim 1, 2 or 3, wherein the surface substrate (11) has a tear strength set to 410 to 1800 Kg / cm ² and a thickness set to 15 to 1000 µm.   A high frequency electric field is applied to a laminate (S) having a transparent surface base material (11) made of a thermoplastic resin and a decorative layer (13) disposed on the back side of the surface base material (11). High frequency dielectric heating while pressing with the Thomson blade (5), and punching with the Thomson blade (5) to form the curved side edge (1a) and the cut portion (1b) over the entire circumference. To manufacture a decorative laminate for stereoscopic display.   The method for producing a decorative laminate for stereoscopic display according to claim 5, wherein application of a high-frequency electric field to the Thomson blade (5) is stopped before the laminate (S) is punched out with the Thomson blade (5).

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