JPH11123729A - Molding tool roll for shaping film and device for manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformize the thickness of a shaping film and prevent the infiltration of radioactive curative resin and the generation of uncured sections. SOLUTION: A molding tool roll 20 for a shaping film for setting a molding tool 21 for the shaping film is provided with cylinder roll 22 with a recessed section 22a formed on a part of its surface, installing jigs 23 and 24 formed on the recessed section 22a of the cylinder roll 22 and fitting and fixing the molding tool 21, a cover 25 for blocking the recessed section 22a of the cylinder roll 22, tapered pawls 26 and 27 for installing the cover 20 on the cylinder roll 22 and fixing the same thereon and an adjustment screw 28 for adjusting the positions of a processing face of the molding tool 21 and the surface of the cover 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding film roll for mounting a molding film on a cylinder roll, and a radiation curing method using the molding roll to form a film as a substrate. The present invention relates to a molding film manufacturing apparatus for manufacturing a mold film.

[0002]

2. Description of the Related Art As a conventional technique, for example, there is known a lenticular lens forming film manufacturing apparatus (Japanese Patent Application No. Hei 1-1201736) in which a forming roll can be easily processed. In addition, as a method of winding a flat circular Fresnel lens around a molding roll, (1) a method of enclosing a filler in a concave portion (JP-A-58-1521),
(2) A method of laminating a molding roll with a heat-resistant adhesive (Japanese Patent Application Laid-Open No. Hei 7-314567) is known.

[0003]

In the above-described conventional molding film manufacturing apparatus, since the cylinder roll has a concave portion, the mounting of the molding die becomes incomplete and the thickness of the molding film becomes uneven. There was a problem. In addition, there has been a problem that the radiation-curable resin invades into the concave portion or an uncured portion is generated during the production of the shaping film. The reason why the uncured portion is generated is that a portion to which the radiation is not irradiated is generated by the complicated attachment mechanism, or the curing is inhibited by oxygen. Even if cured, the radiation-curable resin cured in the recesses is difficult to release.

[0004] The present invention provides a molding roll for a molding film and a manufacturing apparatus capable of making the thickness of the molding film uniform and preventing the radiation-curable resin from penetrating and generating uncured portions. That is the task.

[0005]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 is directed to a molding film roll for mounting a molding film molding die formed on a part of the surface. A cylinder roll having a recess, a fixing mechanism provided in the recess of the cylinder roll for mounting and fixing the forming die, a cover member for covering the recess of the cylinder roll, and a cover for attaching the cover member to the cylinder roll And a mounting roll.

According to a second aspect of the present invention, there is provided a molding die roll for forming a film according to the first aspect, wherein the fixing mechanism comprises:
A molding die roll for a molding film, wherein tension is applied to bring the front surface of the cylinder roll and the back surface of the molding die into close contact with each other.

[0007] The third aspect of the present invention is the first or second aspect.
Wherein the cover mounting mechanism engages and engages an engaging member formed on the back side of the cover member with an engaged member formed on the cylinder roll side. This is a forming roll for a shaping film.

[0008] The invention of claim 4 is the first to third aspects of the present invention.
The molding die roll of the molding film according to any one of the above, further comprising an adjustment mechanism for adjusting a position of a processing surface of the molding die mounted on the cylinder roll and a surface of the cover member. It is a molding roll of a shaping film.

According to a fifth aspect of the present invention, in the molding die roll according to the fourth aspect, the adjusting mechanism is provided in a concave portion of the cylinder roll, and slides the cover mounting mechanism to thereby form the cover. It is a forming die roll of a shaping film, comprising an adjusting screw for adjusting a height of a member.

The invention of claim 6 is the invention of claims 1 to 5
The molding die roll of the molding film according to any one of the above, wherein the molding die is a mold of a Fresnel lens or a lenticular lens.

[0011] The invention of claim 7 is the invention of claims 1 to 6.
The molding die roll of the shaping film according to any one of the above, a resin application means for applying a radiation-curable resin to a molding die of the molding die roll, and the radiation-curable resin on a molding die of the molding roll. And a radiation irradiator for irradiating the radiation-curable resin with radiation to cure the radiation-curable resin.

[0012]

Embodiments of the present invention will be described below in more detail with reference to the drawings. (Structure of Manufacturing Apparatus for Forming Film) FIG. 1 is a view showing an embodiment of a manufacturing apparatus for a forming film according to the present invention.
The molding film manufacturing apparatus 10 includes a molding roll 20.
A dispenser (resin coating means) 11 for applying an ultraviolet-curable resin (radiation-curable resin) 31 to the molding die 21 of the molding roll 20;
Nip rolls 12 and 13 for sandwiching a continuous base film 32, and an ultraviolet lamp (radiation irradiating means) 1 for irradiating the ultraviolet curable resin 31 with ultraviolet light to cure it.
4 and the like.

(Structure of Mold Roll) FIG. 2 is a view showing an embodiment of a mold roll for forming a film according to the present invention. The forming die roll 20 is for mounting and fixing the forming die 21, and as shown in FIG. 2, a cylinder roll 22, mounting jigs 23 and 24, a cover 25, taper claws 26 and 27, An adjusting screw 28 is provided.

The mold 21 is a mold on which a mold of a molding film, for example, a mold of a Fresnel lens or a lenticular lens is formed. The cylinder roll 22 includes a molding die 21.
And a concave portion 21 is formed in a part of the surface of the roll.

The mounting jigs 23 and 24 are the cylinder roll 2
A fixing mechanism provided in the second concave portion 22a for mounting and fixing the molding die 21. The mounting jigs 23 and 24 can attach and fix the molding die 21 to the cylinder roll 22 so as to apply a tension for bringing the front surface of the cylinder roll 22 and the back surface of the molding die 21 into close contact. Fig. 2
It is generated on the mounting jig 24 side of FIG. Mounting jig 24
Has a shape as shown in FIG.
By rotating 4 </ b> A, the mold 21 is pulled and adheres to the surface of the cylinder roll 22.

The cover 25 is a member that covers the recess 22a of the cylinder roll 22. The cover 25 can prevent the ultraviolet curable resin 31 from entering or being uncured during the production of the molding film.

The tapered claws 26 and 27 are members constituting a cover attaching mechanism for attaching the cover 25 to the cylinder roll 22. The taper claw 26 is attached to the back side of the cover 25, and the taper claw 27 is attached to the cylinder roll 22 side. The two taper claws 26, 27 are engaged to be locked (taper lock system).

The adjusting screw 28 is a member for adjusting the position of the processing surface of the molding die 21 mounted on the cylinder roll 22 and the surface of the cover 25. The adjusting screw 28 is provided in the recess 22 a of the cylinder roll 22 and
6 and 27 are slid to adjust the height of the cover 25.

(Mounting / adhesion of forming die) In this embodiment, mounting jigs 23 and 24 are provided on the cylinder roll 22, and the forming die 21 is fixed to the cylinder roll 22 by the mounting jig 23. At this time, the mold 21 is wound around the cylinder roll 22 in the circumferential direction, and the mounting jig 24 is wound.
Thereby, it is brought into close contact with the cylinder roll 22 while applying tension.

(Mounting and Adjustment of Cover) Next, the engagement of the tapered claws 26 and 27 causes the cylinder roll 22 to engage.
The cover 25 is attached to the concave portion 22a. Then, when there is a step between the surface of the cover 25 and the surface (working surface) of the molding die 21, the adjusting screw 28 provided on the end surface of the cylinder roll 22 is rotated to slide the tapered claws 26 and 27. Thereby, the height of the cover 25 can be adjusted.

(Manufacture of molding film) As shown in FIG. 1, an ultraviolet curable resin 31 is dropped on a molding die 21 of a lens molding roll 20 by a dispenser 11, and is placed between the molding die 21 and the nip rolls 12 and 13. By passing the base film 32 through the UV-curable resin 31 and curing the UV-curable resin 31 with the UV lamp 14, the shaped film 30 such as a film lens can be manufactured.

(Effects of Embodiment) According to this embodiment,
There are various effects as follows. (1) The mold 21 can be securely fixed to the cylinder roll 22 by the mounting jigs 26 and 27. (2) Since the forming jigs 21 are fixed to the cylinder roll 22 by applying tension to the cylinder rolls 22 by the mounting jigs 26 and 27, the forming die 21 is brought into close contact with the cylinder roll 22 and the thickness of the forming film 30 is made uniform. Can be. (3) Cover 25 with concave portion 21a of cylinder roll 22
As a result, it is possible to prevent the ultraviolet curable resin 31 from penetrating, and to eliminate the uncured portion. (4) Since the cover 25 can be attached by the tapered claws 26 and 27, the work of attaching the cover 25 can be easily performed. (5) Since the adjusting screw 28 is provided, the surface of the molding die 21 and the surface of the cover 25 are arranged in the same circumference, so that the surface becomes smooth, the roundness can be increased, and the shaping film 3 is formed.
0 can be made more stable.

Various modifications and changes are possible without being limited to the above-described embodiments, and these are also within the scope of the present invention. Although an example using an ultraviolet curable resin has been described, a resin that is cured by another radiation, for example, an electron beam may be used.

[0024]

As described above, according to the present invention,
There is an effect that the thickness of the shaping film can be made uniform and the penetration of the radiation-curable resin and the generation of uncured portions can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of an apparatus for manufacturing a shaped film according to the present invention.

FIG. 2 is a view showing an embodiment of a mold roll of a shaping film according to the present invention.

[Explanation of symbols]

FIG. 1 is a diagram showing an embodiment of an apparatus for manufacturing a shaped film according to the present invention. DESCRIPTION OF SYMBOLS 10 Manufacturing apparatus of a shaping film 11 Dispenser (resin application means) 12, 13 Nip roll 14 Ultraviolet lamp (radiation irradiation means) 20 Mold roll 21 Mold 22 Cylinder roll 23, 24 Mounting jig 25 Cover (cover member) 26, 27 Taper claw (engaging member, non-engaging member) 28 Adjusting screw 30 Lens film (molding film) 32 Base film 31 UV curable resin (radiation curable resin)

Continued on the front page (51) Int.Cl. ⁶ Identification code FI G03B 21/62 G03B 21/62

Claims (7)

[Claims] 1. A molding roll for a molding film for mounting a molding die for a molding film, comprising: a cylinder roll having a recess formed in a part of a surface thereof; A fixing mechanism for mounting and fixing the cover, a cover member for covering a concave portion of the cylinder roll, and a cover attaching mechanism for attaching the cover member to the cylinder roll. 2. The molding die roll of the molding film according to claim 1, wherein the fixing mechanism applies a tension for bringing a front surface of the cylinder roll and a back surface of the molding die into close contact with each other. Mold roll for forming film. 3. The molding film roll according to claim 1, wherein the cover mounting mechanism is formed on an engagement member formed on a back side of a cover member and on the cylinder roll side. A molding die roll for a molding film, wherein the molding die roll is mounted by engaging the engaged member. 4. The molding film roll of the molding film according to claim 1, wherein a processing surface of the molding die attached to the cylinder roll and a surface of the cover member are formed. A forming die roll for a forming film, comprising an adjusting mechanism for adjusting a position. 5. The forming die roll of the forming film according to claim 4, wherein the adjusting mechanism is provided in a concave portion of the cylinder roll, and slides the cover attaching mechanism to adjust the height of the cover member. A forming die roll for a forming film, comprising an adjusting screw for adjustment. 6. The molding die roll according to claim 1, wherein the molding die is a Fresnel lens or a lenticular lens. Mold roll for film. 7. The forming roll of the shaping film according to claim 1, a resin application unit for applying a radiation-curable resin to a forming die of the forming roll. An apparatus for manufacturing a shaped film, comprising: a nip roll for sandwiching a substrate film in a mold of a molding roll via the radiation-curable resin; and a radiation irradiator for irradiating the radiation-curable resin with radiation for curing. .