JP2001096618A - Rubber roller for laminater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber roller for a laminater capable of uniform pressing and good lamination even on an uneven surface having a relatively small radius of curvature. SOLUTION: A metal coil 6 is used as the core bar of a rubber roller for a laminater in which the core bar is coated with rubber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber roller for a laminator used in a film laminating apparatus of a film laminating machine.

[0002]

2. Description of the Related Art Conventionally, an adhesive for a film laminating machine,
In a film bonding apparatus section by thermocompression bonding or the like, in order to obtain a more uniform and stable bonding state with respect to an object to be bonded (hereinafter, referred to as an object), a silicone rubber or the like is used as a pressing roller on the outer periphery of the core metal. An elastic rubber roller coated on the surface is used.

In the case where the surface of the object has a convex curved surface having a relatively large radius of curvature, the hardness of the rubber material is reduced, and a large pressing force is applied to the rubber roller to cope with the deformation of the rubber material. .

[0004]

However, when the surface of the object is formed as a convex curved surface having a relatively small radius of curvature, such as a curved mirror or a CRT surface of a television, the amount of deformation of the rubber material is limited. Therefore, a uniform pressurized state cannot be obtained as a whole with the rubber roller, and a product with good bonding quality cannot be obtained.

In order to solve this problem, a rubber roller without a metal core or a rubber roller using an extremely thin metal core can be considered, but the former cannot substantially process the rubber roller, and the latter has a durability against processing deformation. In addition, there is a problem in restorability, and it cannot be put to practical use.

Accordingly, the present invention is to provide a rubber roller for a laminator which can obtain a uniform pressurized state as a whole even if the surface of the object has a relatively small radius of curvature by devising a cored bar. With the goal.

[0007]

In order to achieve the above object, the present invention provides a rubber roller for a laminator in which a rubber material is coated on the outer periphery of a metal core, wherein the metal core is a flexible metal coil. It is.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. The rubber roller R for a laminator according to the present invention includes the core metal journal 1, a metal coil 6, and a rubber roller main body 7.

The core metal journal 1 has a flange 2 at the center, a shaft 3 at one end, and a shaft screw 4 with a thread groove 5 at the other end. is there.

The metal coil 6 corresponds to a conventional cored bar, and has an inner diameter slightly smaller than the outer diameter of the shaft screw portion 4 of the cored bar 1.

The rubber roller main body 7 is made up of a vulcanized cylindrical intermediate rubber 7a and an upper rubber 7b. The rubber material applied to the rubber roller body 7 includes silicone rubber, fluorine rubber, acrylonitrile butadiene rubber, neoprene rubber and the like.

Then, one end of the metal coil 6 is screwed into the shaft thread portion 4 of one of the core metal journals 1 and attached. Thereafter, a cylindrical intermediate rubber 7a is provided on the outer periphery of the metal coil 6. Fit. Then, a cylindrical upper winding rubber 7b is fitted around the outer periphery of the middle winding rubber 7a, and then the shaft screw portion 4 of the other core metal journal portion 1 is screwed into the inner periphery of the other end of the metal coil 6. Thus, the flange 2 of the metal core journal 1 is pressed against both end surfaces of the rubber roller body 7 to form a rubber roller R for a laminator.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The metal coil 6 has an outer diameter of 25 m.
m, an inner diameter of 19 mm, and a length of 326 mm. One end of the metal coil 6 is screwed into the shaft screw portion 4 of the core metal journal portion 1 and integrated as described above.

Next, a rubber hardness of 7 is used as the middle rubber 7a.
An acrylonitrile-butadiene rubber (NBR) tube previously processed to a predetermined dimension of 0 ° (JIS-A) is fitted around the outer periphery of the metal coil 6, and further, a middle-wound rubber tube 7 a
Of the upper rubber 7b, hardness 30 ° (JIS-
After fitting a silicone rubber cylinder previously processed to a predetermined size in A), the shaft screw portion 4 of the other core metal journal portion 1 is screwed into one end of a metal coil 6 to thereby form the two cylindrical intermediate rubber 7a. And the both end surfaces of the upper rubber 7b are pressed against the flange 2 of the cored bar 1 to make the rubber roller R for the laminator.
Was completed.

The rubber roller R for laminator
Was attached to the bonding portion of the laminating machine, and the film was continuously bonded to the convex curved surface of the CRT of the television. As shown in FIG. The rubber roller body 7 was deformed in the direction orthogonal to the longitudinal direction, and the rubber roller body 7 was also deformed, so that the entire convex curved surface could be uniformly pressed, and a product having good quality and good bonding strength could be obtained.

The metal coil 6 is made of a material such as
The curve deformability varies depending on the wire diameter, etc., and the rubber hardness and rubber material vary depending on the target laminate and required characteristics such as mold release, heat resistance, and abrasion resistance. It is necessary to select the best one.

[0017]

As is apparent from the above description, according to the rubber roller for a laminator according to the present invention, since the core is made of a bendable metal coil, the object to be bonded has a curvature like the surface of a CRT of a television. Even with a convex curved surface with a relatively small radius, the metal coil can be bent and deformed on the rubber roller body, so that it can be pressure-bonded to the convex curved surface in a uniform state, and evenly bonded to the entire convex curved surface Strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a rubber roller for a laminator of the present invention.

FIG. 2 is an essential part cross-sectional view showing the use state of FIG. 1;

[Explanation of symbols]

R ~ rubber roller for laminator, 1-core metal journal, 2-flange, 4-shaft screw, 5-screw groove, 6-metal coil, 7-rubber roller main body, 7a-medium winding rubber, 7b-
Upper volume rubber.

Claims (1)

[Claims] 1. A rubber roller for a laminator in which a rubber material is coated on the outer periphery of a core metal, wherein the core metal is a metal coil.