JP2000167936A - Film laminating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a distortion of a film in association with a curing shrinkage of an adhesive by laminating the film on an object coated with the adhesive in the surface and supported by a support means, curing the adhesive, bringing a porous sucking member into close contact with a surface of the film when cured, and coupling a vacuum source to the member. SOLUTION: A glass plate 20 coated with an ultraviolet curable adhesive 22 is mounted on a support stage moving the a first position A, and a film 21 is supplied onto it. Then, a laminating roller 13 is lowered, and the film 21 is pressed on the plate 20. Then, the stage and a moving glass stage 12 are moved to a second position B, a sucking plate 14 is lowered, its close contact surface is brought into close contact with the surface of the film 21, holes of the plate 14 are evacuated in vacuum by a vacuum generator 15, and the film 21 is sucked by the contact surface. Then, an ultraviolet lamp 16 is lit, and the adhesive 22 is cured. Then, even when the adhesive 22 is cured and shrunk, the film 21 is not surged, and hence its distortion is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film sticking apparatus for sticking a film to a plate such as glass via an adhesive.

[0002]

2. Description of the Related Art Conventionally, when a film is pasted to a plate material such as glass via an adhesive, for example, as shown in FIG. 7, an ultraviolet curing adhesive 2 is applied to the surface of a plate material 1 such as glass. The film 3 is placed on the surface of the plate 1 and the film 3 is pressed and adhered to the plate 1 via an adhesive 2 by a roller or the like (not shown), and then the adhesive is irradiated with ultraviolet rays. 2 is cured, and the film 3 is attached.

Here, when the adhesive 2 is cured, the adhesive 2 undergoes curing shrinkage. Therefore, the adhesive 2 is cured by holding down the film 3 with the glass plate 4 from above. .

[0004]

However, since the curing shrinkage of the adhesive 2 described above is not uniform over the entire surface to which the film 3 is attached, as shown in FIG. There is a problem that distortion occurs and quality is reduced.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a film sticking apparatus which does not cause distortion of a stuck film due to curing shrinkage of an adhesive.

[0006]

According to the present invention, there is provided, according to the present invention, a support means on which an object on which a film is to be attached is placed, and an adhesive applied to the surface supported by the support means. For the object, a film affixing means for attaching a film, a curing means for curing the adhesive applied to the surface of the object, and the surface of the film affixed to the object when the adhesive is cured by the curing means. This is achieved by a film sticking apparatus including a porous adsorbing member that adheres to the substrate and a vacuum source connected to the adsorbing member.

[0007] According to the above construction, in a state where the film is affixed by the film affixing means to the surface of the object which is supported by the supporting means and the surface of which is coated with the adhesive, the adsorbing member is removed from the film. When the suction member is brought into close contact and the suction member is evacuated by a vacuum source, the film comes into close contact with the contact surface of the charging member by vacuum suction.

In this state, even if the adhesive shrinks by curing the adhesive by the curing means, the film itself is vacuum-sucked to the adhesion surface of the suction member, and the adhesion of the adhesion member is reduced. Since it is held in the shape of the surface, it is not affected by the curing shrinkage of the adhesive. Thus, the film attached to the surface of the object after the adhesive is cured can be attached without distortion due to uneven waving due to uneven curing shrinkage of the adhesive.

Therefore, no film distortion occurs, and the quality of the film-attached product is improved. In particular, when the object is an optical component on which the film is attached, deterioration of the optical performance due to the film distortion is eliminated. Will be
A highly reliable optical component can be obtained.

In the case where the surface of the adsorbing member which is in close contact with the surface of the film has a shape corresponding to the surface of the object, the surface of the object may or may not be flat. Also, since the film that is vacuum-sucked on the contact surface of the suction member is held in a shape corresponding to the surface of the object, a film without distortion can be obtained.For example, a protective film is formed on the surface of the glass panel of a cathode ray tube. Alternatively, when a film as an antireflection film is stuck, the film is stuck without distortion.

When the adhesive surface of the suction member is kept at a fixed distance from the surface of the object when the adhesive is cured, the film adhered to the surface of the object by curing the adhesive. Will always be located at a fixed distance from the surface of the object.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. still,
Since the embodiments described below are preferred specific examples of the present invention, various technically preferred limitations are added.
The scope of the present invention is not limited to these embodiments unless otherwise specified in the following description.

FIGS. 1 and 2 show an embodiment of a film sticking apparatus to which the present invention is applied. In FIG.
The film sticking apparatus 10 includes a support stage 11 (see FIG. 2) as support means, a movable glass stage 12 fixedly arranged on the support stage 11, a sticking roller 13 as film sticking means, and a suction member as a suction member. Board 14
And a vacuum generator 15 as a vacuum source connected to the suction plate 14 and an ultraviolet lamp 16 as a curing means.

The support stage 11 is supported by a plurality of drive rollers 11a and is configured to move in the left-right direction in FIG. These drive rollers 11
a is driven to rotate by a motor (not shown). Thereby, the support table 11 is driven right and left by an operation of a drive motor (not shown) as shown by an arrow X in FIG. 1 and a first position A shown on the left side of the drawing.
And a second position B shown on the right side of the drawing.

The movable glass stage 12 is fixedly held on the upper surface of the support stage 11 so as to move integrally with the support stage 11 and, on the upper surface, a glass plate 20 as an object to which a film is to be attached. It is to be placed.

The sticking roller 13 has a known structure used in a conventional film sticking apparatus, and is disposed above a first position A of the support stage 11 in FIG. When the film 21 is supplied by a film supply unit (not shown), the film 21 is lowered on one side and moved in the horizontal direction by an actuator and a guide mechanism (not shown) as shown by an arrow C in FIG. Is configured to rise.

The adsorbing plate 14 is a plate made of a porous material such as a sintered metal, and is covered with an outer box 14a except for a lower surface which is a contact surface (that is, on a side surface and an upper surface). The inside is airtight, and is disposed above the second position B of the moving glass stage 12 in FIG. 1, and is supported by a connecting plate 17 as shown in FIG. The connecting plate 17 is provided with an air cylinder 18.
As shown by an arrow D in FIG. When the suction plate 14 is lowered, the lower limit position is determined by a stopper (not shown). Thus, the suction plate 14 is set such that the distance between the lower surface (adhesion surface) and the upper surface of the glass plate 20 is constant at this lower limit position.

Here, the contact surface of the suction plate 14 is formed in a shape corresponding to the surface of the glass plate 20, which is the above-mentioned object, and in the illustrated example, flat. Further, the suction plate 14 is connected to the connection port 1 provided on the upper part of the outer box 14a.
By vacuum evacuation by the vacuum generator 15 connected to 4b, vacuum suction is performed by the contact surface exposed to the outside.

The ultraviolet lamp 16 is disposed below the second position B of the support stage 11 in FIG. 1, and is a glass plate as an object supported by the moving glass stage 12 on the support stage 11. 20 is irradiated with ultraviolet rays.

The film sticking apparatus 10 according to the present embodiment
Is configured as described above, and operates as follows when attaching a film. First, as shown in FIG. 3, the support stage 11 is moved to the first position A, and the glass plate 20 having the surface coated with the ultraviolet curing adhesive 22 is placed on the support stage 11 and fixed. Will be retained.
Then, the film 21 is supplied and placed on the glass plate 20 by a film supply means (not shown).

Subsequently, the sticking roller 13 is moved by an arrow C in FIG.
As shown in FIG. 7, the film 21 is pressed against the glass plate 20 while rolling on the surface of the film 21 by moving in the horizontal direction by contacting one side edge of the film 21. Then, after reaching the other side edge of the film 21, the sticking roller 13 is raised. This allows
The film 21 is stuck over the whole.

Thereafter, as shown in FIG. 4, the support stage 11 and the moving glass stage 12 move rightward in FIG. Then, as shown in FIG. 5, the air cylinder 18 operates to lower the connecting plate 17 and the suction plate 14, and the contact surface 1, which is the lower surface of the suction plate 14.
The lowering of the suction plate 14 is stopped in a state where 4 c is in close contact with the surface of the film 21.

In this state, when the vacuum generator 15 operates to evacuate the inside of the outer box 14a, the inside of the hole of the suction plate 14 is also evacuated, so that the film 21 is sucked by vacuum suction. 14 is attracted to the contact surface 14c. When the ultraviolet lamp 16 is turned on, the ultraviolet light emitted from the ultraviolet lamp 16 passes through the glass plate 20 from below, and the ultraviolet curable adhesive 22
To cure the ultraviolet-curable adhesive 22.

At this time, even if the UV-curable adhesive 22 cures and shrinks, the film 21 is in close contact with the contact surface of the suction plate 14, so that the UV-curable adhesive 22 is not uniformly cured. Due to the shrinkage, the film 21 does not undulate, and the distortion of the film 21 is suppressed. When the ultraviolet-curable adhesive 22 is completely cured, the film 21 is attached to the surface of the glass plate 20 via the ultraviolet-curable adhesive 22.

In this case, since the shape of the film 21 is kept in close contact with the contact surface of the suction plate 14, the film 21 does not undulate and the distortion of the film 21 is eliminated. . Therefore, the quality of the glass plate 20 to which the film 21 is attached is improved. Further, as described above, the suction plate 14 is stopped at the lower limit position by a stopper (not shown) when the suction plate 14 is lowered.
The distance between the contact surface 14c and the surface of the glass plate 20 is always constant. Thereby, the film 21 is always located at a certain distance from the surface of the glass plate 20,
Variations between products will be reduced.

FIG. 6 shows a modification of the suction plate 14 described above. In FIG. 6, the suction plate 30 is formed by forming a plurality of vertically penetrating holes 31 in a solid material such as a metal, a plastic, or a ceramic instead of a porous material such as a sintered metal. I have. The inside of the suction plate 30 is hermetically sealed by covering the side surface and the top surface with the outer box 32.

In this case, regarding the upper surface, the outer box 32
The suction plate 30 is formed so as to have an interval with respect to the upper surface thereof. Thus, the openings in the upper surface of the plurality of holes 31 provided in the suction plate 30 communicate with each other in the outer box 32, and a vacuum (not shown) is generated through the connection port 32a provided in the upper part of the outer box 32. To be connected to the vessel. According to the suction plate 30 having such a configuration, the film sticking device 10 acts exactly as the suction plate 14 in the film sticking device 10 shown in FIGS. .

In the above-described embodiment, the case where the film 21 is adhered to the surface of the flat glass plate 20 as the object has been described. However, the present invention is not limited to this. Even in the shape of
By forming the contact surface of the suction plate 14 into a shape corresponding to the surface shape of the object, distortion of the film 21 is eliminated. Thereby, for example, even when a film for a protective film or an antireflection film is attached to the glass panel surface of the cathode ray tube, the distortion of the film is eliminated, so that the quality of the cathode ray tube is improved. .

In the above-described embodiment, the ultraviolet curing adhesive 22 is used as the adhesive, and the ultraviolet lamp 16 is used for curing the adhesive. However, the present invention is not limited to this. An agent such as a thermosetting adhesive may be used, and the thermosetting adhesive may be heated and cured by heating means such as a hot-wire lamp.

Further, in the above-described embodiment, the lowering of the suction plate 14 is restricted by a stopper (not shown) so that the suction plate 14 is stopped at a fixed distance from the surface of the glass plate 20. However, the present invention is not limited to this.
When the pressing force on the film 21 reaches a predetermined value, the lowering may be stopped.

[0031]

As described above, according to the present invention, it is possible to provide a film sticking apparatus which does not cause distortion in a stuck film due to curing shrinkage of an adhesive.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of a film sticking apparatus according to the present invention.

FIG. 2 is a schematic side view of the film sticking apparatus of FIG.

FIG. 3 is a partial front view showing a main part of the film sticking apparatus of FIG. 1 in a film sticking state.

FIG. 4 is a partial front view showing a main part of the film sticking apparatus of FIG. 1 in a state of being moved to a second position.

FIG. 5 is a partial front view showing a main part of the film sticking apparatus of FIG. 1 in a state of electrostatic attraction and ultraviolet irradiation.

FIG. 6 is a schematic sectional view showing a modified example of the suction plate in the film sticking apparatus of FIG.

FIG. 7 is a partially enlarged cross-sectional view showing a glass plate on which a film is pasted by a conventional film pasting apparatus.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Film sticking apparatus, 11 ... Support stage (support means), 12 ... Moving glass stage, 13
..Stacking rollers, 14 ... Suction plates (suction members), 14
a: outer box, 14b: connection port, 15: vacuum generator (vacuum source), 16: ultraviolet lamp (curing means), 17: connecting plate, 18: air cylinder , 2
0: glass plate (object), 21: film, 2
2 ... UV curable adhesive.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C03C 17/32 C03C 17/32 CD // H01J 9/24 H01J 9/24 A B29L 11:00 F term (Reference) 3F108 GA09 GB01 HA06 HA12 4F100 AG00 AK01C AR00B AT00A AT00C BA03 BA07 CB02 CB04 EH46B EJ542 EK06 GB41 JB13B JB14B JL04 JL11B 4F211 AD04 AD05 AD08 AD32 AG01 AG03 AH73 AJ10 T02 TTN TN11 TN11 TN11 AC04 AC24 FA09 FB03 GA01 5C012 AA01 BB07

Claims (5)

[Claims] 1. A supporting means on which an object to which a film is to be attached is placed, and a film attaching means for attaching a film to an object supported by the supporting means and having a surface coated with an adhesive. A curing unit for curing the adhesive applied to the surface of the object; a porous adsorption member that adheres to the surface of the film attached to the object when the adhesive is cured by the curing unit; and a connection to the adsorption member. And a vacuum source. 2. The film sticking apparatus according to claim 1, wherein a contact surface of the suction member, which is in close contact with the film surface, has a shape corresponding to the surface of the object. 3. The film sticking apparatus according to claim 2, wherein the contact surface of the suction member is held at a fixed distance from the object when the adhesive is cured. 4. The film sticking apparatus according to claim 1, wherein the adhesive is an ultraviolet curing adhesive, and the curing means is an ultraviolet lamp. 5. The film sticking apparatus according to claim 1, wherein the adhesive is a thermosetting adhesive, and the curing means is a heating means.