KR101633697B1 - Roller for preventing a step coverage of optical film - Google Patents

Abstract

The present invention relates to a step-preventing tube for an optical film, and more particularly, to a tube for preventing an optical film, in which an inner groove is formed at the outer periphery of a tube for winding an optical film, The end portion is inserted into the inner groove and then attached to the adhesive member formed in the fixing groove so as to be wound thereon so that the step generated due to the winding of the end portion of the optical film in the state of protruding outside the tube Preventing tube body for an optical film in which a plurality of inner grooves are formed on both sides of the fixing groove so that the optical film can be wound in a clockwise and counterclockwise direction in one tube body .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a step-

The present invention relates to an optical film step-preventing type optical film for preventing an end portion of an optical film from protruding to the outside in the first winding of an optical film in a tube body for winding an optical film, It is about the body.

In general, the surface accuracy of a tube (tube) is different depending on the kind of film to be wound. In addition to a branch tube used as a general vinyl or film winding core, a very thin thin film, The surface of the paper tube used in the process is coated with wax or the like and then subjected to a pressure treatment with a roller to be treated very smoothly.

On the other hand, as shown in Fig. 1, when the film 5 having a predetermined thickness is wound using the paper tube 1, the end portion where the film starts to be wound is adhered to the surface of the paper tube with the double- And the film is wound on the paper tube while rotating the paper tube.

However, in this case, even if the step 4 due to the thickness of the double-sided tape occurs, or even if the film to be wound is thin, the step of winding the film is continued, So that the surface of the wound film is wrinkled and a large amount of the film is defective. Particularly, such a problem causes a serious loss in the case of expensive products such as a high-function film used as a core material of high-tech industries such as semiconductors.

In other words, when the film is wound using a conventional paper tube, there is a problem that film pressing on the film wound on the paper tube occurs due to the thickness of the double-faced tape and the thickness of the film adhered to the double-faced tape.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a method of manufacturing an optical film, The end portion of the optical film bulges and a step is generated as the winding process progresses. Therefore, in the present invention, one end of the optical film is wound in the first winding, At the same time, it is an object of the present invention to provide a step-preventing tube for an optical film which can be wound in either a clockwise or a counterclockwise direction without causing such a step.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, the objects and advantages of the present invention can be realized by the means and the combination shown in the claims.

Disclosure of the Invention The present invention has been conceived to solve the above-mentioned problems, and its object is to provide a tube for winding an optical film (10), comprising: a tube body (20) around which an optical film (10) is wound; An inner groove 30 which is recessed at the outer periphery of the tube 20 to allow the end of the optical film 10 to enter when the optical film 10 is first wound; And an adhesive member (60) is formed on an upper surface of the inner groove (30) so as to be recessed at a relatively lower depth than the inner groove (30) A fixing groove 50 for fixing one end of the fixing member 10 to the fixing groove 50; And a control unit.

As described above, according to the present invention, when the optical film is wound, the end portion of the optical film protrudes to the tube body, so that there is an effect of preventing a step where the part becomes bulged as the winding process progresses.

Further, the present invention has an effect that it is possible to wind the optical film in either the clockwise or counterclockwise direction while preventing the step difference in the winding of the optical film.

In addition, the present invention has the effect that the end portion of the optical film to be wound is fixed when the optical film is first wound, the end portion is inserted into the inner groove, and at the same time, a part of one end is fixed to the tube body.

In addition, the present invention has an effect of being applicable to various tubes using materials that can be manufactured for extrusion such as paper, FRP, and plastic.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of an embodiment showing a step generated in winding a film using a conventional paper tube; FIG.
2 is a perspective view of an embodiment showing a step-preventing tube for an optical film according to the present invention.
3 is a partial enlarged view of Fig.
4 and 5 are views of an embodiment showing a state in which an optical film is wound on a step-preventing tube body for an optical film according to the present invention.

Before describing in detail several embodiments of the present invention, it will be appreciated that the application is not limited to the details of construction and arrangement of elements set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front,""back,""up,""down,""top,""bottom, Expressions and predicates used herein for terms such as "left,"" right, ""lateral," and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features in order to achieve the above object.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

To this end, one embodiment of the present invention is a tube for winding an optical film (10), comprising: a tube body (20) on which an optical film (10) is wound around an outer periphery; An inner groove 30 which is recessed at the outer periphery of the tube 20 to allow the end of the optical film 10 to enter when the optical film 10 is first wound; And an adhesive member (60) is formed on an upper surface of the inner groove (30) so as to be recessed at a relatively lower depth than the inner groove (30) A fixing groove 50 for fixing one end of the fixing member 10 to the fixing groove 50; And a control unit.

The inner groove 30 is composed of first and second inner grooves 31 and 32 formed on both sides of the fixing groove 50 with the fixing groove 50 therebetween. Clockwise or counter-clockwise.

The optical film 10 is formed by sequentially winding the optical film 10 from the outside of the inner groove 30 to the top of the inner groove 30 and the top surface of the adhesive member 60 The optical film 10 on the upper portion of the inner groove 30 is cut so that the optical film 10 is inserted into the inner groove 30. [

Hereinafter, a step-preventing tube for an optical film according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG.

The step-preventing tube body for an optical film of the present invention includes a tube body (20), an inner groove (30), and a fixing groove (50).

The tube 20 is wound around the optical film (optical film 10) by being rotatably connected to another rotation driving means (such as a motor) and power transmission means so as to be able to transmit power.

The tube 20 for this purpose can be a paper tube made of paper and made of paper according to an embodiment of the user. In addition, various tubes using materials that can be manufactured for extrusion such as FRP, It may correspond to the tubular body 20.

In addition, the tube 20 in the present invention is used for the purpose of winding an optical film 10 having a thickness of about 12 μm to 285 μm, which is used for various purposes such as TVs and mobile phones.

The inner groove 30 is formed in the widthwise direction on the outer periphery of the tube 20 described above, and is formed to be recessed at the outer periphery of the tube 20 at a predetermined depth.

In addition, the fixing groove 50 is formed at one side of the inner groove 30 so that the end portion of the optical film 10 is first inserted into the inner groove 30 when the optical film 10 to be wound is first wound (Or inserted or inserted) into the tubular body 20 and then wound around the tubular body 20 through the fixing groove 50, which will be described later.

In this case, the optical film 10, which is inserted into the inner groove 30 at one end thereof, must be inserted into the groove 20, (Because the adhesive member 60 is formed in the fixing groove 50), the end portion of the optical film 10 is inserted into the inner groove 30, and at the same time, The adhesive member 60 formed in the groove 50 ensures that the end of the optical film 10 is wound in a fixed state while the end of the optical film 10 is fixedly attached. 60 are pressed so that the optical film 10 is attached to the outer periphery of the tubular body 20 in the same horizontal line when the optical film 10 is attached and fixed, The optical film 10 to be wound is formed such that the fixing groove 50 is formed on the left side of the inner groove 30 Yiwu becomes available, the only wound in a clockwise direction when it is formed on the right side of the counter-clockwise direction, the fixing groove 50, the intergranular groove 30.

Therefore, according to the embodiment of the present invention, the optical film 10 can be wound in both directions by winding the optical film 10 in the clockwise direction or the optical film 10 in the counterclockwise direction The inner groove 30 can be composed of a plurality of first and second inner grooves 31 and 32 so that the inner groove 30 can be selected and used.

The first and second inner grooves 31 and 32 are spaced apart from each other at the outer periphery of the tube 20 and are recessed at the same depth toward the width direction of the tube 20, 31, and 32, respectively. That is, the first and second inner grooves 31 and 32 are formed on both sides of the fixing groove 50. For convenience of explanation, the inner groove 30, which is recessed to the left of the fixing groove 50, The inner grooves 31 and the inner grooves 30 recessed to the right of the fixing grooves 50 will be referred to as the second inner grooves 32. [

When the user intends to wind the optical film 10 to be wound around the tube 20 in the clockwise direction, the end of the first optical film 10 is inserted into the first inner groove 31 When the optical film 10 is to be wound in the counterclockwise direction, the optical film 10 is wound in a clockwise direction passing through the fixing groove 50 for the right side of the first inner groove 31. When the optical film 10 is wound in the counterclockwise direction, The end portion of the optical film 10 to be firstly wound on the first inner groove 32 is inserted and then wound in the counterclockwise direction passing through the fixing groove 50 located on the left side of the second inner groove 32.

Since the end portion of the optical film 10 is inserted into the first and second inner grooves 31 and 32 and then wound when the optical film 10 is first wound on the outer periphery of the tube 20, The step at the end of the optical film 10 at the outer periphery of the tube 20 (the end where the optical film 10 is initially wound at the outer periphery of the tube 20) (The end portion of the optical film 10) after the optical film 10 is completely wound one turn, a step is generated in the overlapped portion when the optical film 10 is superimposed on the first starting point (the end portion of the optical film 10) ) Will not be generated.

When the optical film 10 is wound as described above, the left jaw portion of the first inner groove 31 in which the optical film 10 comes in contact with the first and second inner grooves 31 and 32, When the optical film 10 is wound in the clockwise direction, the first inner groove 31 (the inner groove 32) is formed in the shape of a gentle arcuate cross section to form the eccentric portion 40, And then wound around the outer circumferential edge of the tubular body 20 via the upper end of the second inner groove 32 after the end of the second inner groove 32 is in contact with the adhesive member 60 of the fixing groove 50, 32 is relatively higher than the fixing groove 50. This may cause a problem that the optical film 10 is bent at this portion and the right side of the second inner groove 32 The jaws (and the left jaw of the first inner groove 31 when the optical film is wound in the counterclockwise direction) can be gently machined.

The fixing groove 50 is formed between one side of the inner groove 30 and more specifically between the first and second inner groove 31 and 32 as described above. 30, a recess is formed in the outer periphery of the tube 20 by a predetermined depth in the width direction.

At this time, the depth of recess of the fixing groove 50 is set to be relatively larger than the width of the above-mentioned inner groove 30, and the depth of the fixing groove 50 is set so as to be lower than the depth of recess of the inner groove 30 do.

In addition, an adhesive member 60 (ex: adhesive) is further formed on the upper surface of the fixing groove 50. As described above, when the optical film 10 is first wound, The end portion of the optical film 10 sandwiched by the tube body 20 to be rotated may be pulled out of the inner groove 30 and may not be wound even if a step is not generated do.

Therefore, in the present invention, the adhesive member 60 is applied or adhered to the upper surface of the fixing groove 50, and the end portion of the optical film 10 to be wound is wound on one of the first and second inner grooves 31 and 32 The optical film 10 is wound on the tubular body 20 through the adhesive member 60 formed on the upper surface of the fixing groove 50 so that the optical film 10 is wound on the tubular body 20 So that it can be maintained in a fixed state.

In the present invention, the end of the optical film 10 may be directly inserted into the inner groove 30, but depending on the user, the first and second inner grooves 31 The optical film 10 is wound around the inner groove 30 so that the upper surface of the inner groove 30 can be sufficiently covered without being directly inserted into the inner groove 30 selected in accordance with the winding direction, The optical film 10 is wound around the upper surface of the fixing groove 50 so that the optical film 10 is adhered to the tube 20 and then the optical film 10 is adhered to the tube 20 The optical film 10 covering the upper surface of the inner groove 30 is cut to fit the inner circumferential edge of one side of the inner groove 30 through various cutting members (e.g., knives) The inner groove 30 can be bent into the inner groove 30 by a length covering the upper surface of the inner groove 30. (Of course, it is a matter of course that the end portion of the optical film 10, which is sufficiently wound around the inner groove 30 after the cutting as described above, should be removed).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

10: Optical film 20: Tubular body
30: Inner groove 31: First inner groove
32: second inner circumferential groove 40:
50: fixing groove 60: adhesive member

Claims (3)

In the tube for winding the optical film (10)
A tube body 20 on which an optical film 10 is wound around an outer periphery;
An inner groove 30 which is recessed at the outer periphery of the tube 20 to allow the end of the optical film 10 to enter when the optical film 10 is first wound;
And an adhesive member (60) is formed on an upper surface of the inner groove (30) so as to be recessed at a relatively lower depth than the inner groove (30) And a fixing groove (50) for fixing and fixing one end of the fixing member (10)
The inner groove 30 is composed of first and second inner grooves 31 and 32 formed on both sides of the fixing groove 50 with the fixing groove 50 interposed therebetween so that the bidirectional winding of the optical film 10 It is possible to selectively use whether the optical film 10 is wound in the clockwise direction or the optical film 10 is wound in the counterclockwise direction,
The height of the jaws at the ends of the first inner groove 31 or the second inner groove 32 is relatively higher than that of the fixing groove 50 so that the first inner groove 31 or the second inner groove 32 ends The left jaw of the first inner groove 31 and the right jaw of the second inner groove 32 are gently worked to form the eccentric portion 40 However,
When the optical film 10 is attached and fixed, the part of the adhesive film 60 to which the one end of the optical film 10 is attached has the same horizontal line as the outer periphery of the tube 20 Wherein the thickness of the stepped portion is smaller than the thickness of the stepped portion.
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