KR101544250B1 - Film sheet coiling roll and film sheet coiling method using the same - Google Patents

Abstract

A film sheet winding roll capable of minimizing the generation of a pressing mark of an end mark due to a winding pressure by attaching a film sheet cut at least one side of one end portion to an oblique direction to the film sheet winding roll through an adhesive tape, A sheet winding method will be described.
A method of winding a film sheet according to the present invention includes the steps of: (a) providing a film sheet winding roll having an inner core and an outer core formed to surround an outer circumferential surface of the inner core; (b) disposing a film sheet, at least one side of one end of which is cut in an oblique direction, in the film sheet winding roll; (c) attaching the film sheet to the film sheet take-up roll by disposing an adhesive tape at a position corresponding to a vertex at which at least one side of the film sheet take-up roll and one side end of the film sheet is cut in an oblique direction and protruding, ; And (d) winding the film sheet on the film sheet take-up roll.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a film sheet winding roll,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film sheet winding roll and a method of winding a film sheet using the same, and more particularly, to a film sheet winding roll which is capable of preventing occurrence of a pressing mark of an end mark Roll and a method for winding a film sheet using the same.

In general, a method of attaching a film sheet to a surface of a flat object is widely known, in which a film is attached using a roller, in particular, a heating roller and a pressure roller.

Such a film sheet is managed in such a manner that it is rolled up in the form of a roll for convenience of transportation, storage and the like before it is adhered to a use application by heating and pressure rollers. That is, the rectangular film sheet is wound around the film sheet take-up roll along one direction.

However, conventionally, when the work of winding the film sheet on the film sheet take-up roll is completed, a problem that the pressing mark of the end mark is generated due to the self-load of the film sheet and the winding pressure at the initial connection step portion of the film sheet often occurs Respectively. As a result, the pressing mark of such an end mark serves as a factor that damages the value of the film sheet.

Korean Patent No. 10-1017122 (published on Feb. 25, 2011) discloses a related art document, which discloses an apparatus for attaching a curved film and a method of attaching a film using the same.

It is an object of the present invention to provide a film sheet winding roll capable of preventing the occurrence of a pressing mark of an end mark due to an initial connection step of a film sheet in advance.

Another object of the present invention is to provide a film sheet winding method capable of minimizing the occurrence of pressing marks at the initial connection step portion by winding the film sheet by using the film sheet take-up roll.

According to an aspect of the present invention, there is provided a film sheet winding roll comprising: an inner core having a pipe shape; And an outer core wound around the outer circumferential surface of the inner core, the outer core having at least one side cut at an oblique direction on one side thereof.

According to an aspect of the present invention, there is provided a film sheet winding method comprising: (a) providing a film sheet winding roll having an inner core and an outer core formed to surround an outer circumferential surface of the inner core; (b) disposing a film sheet, at least one side of one end of which is cut in an oblique direction, in the film sheet winding roll; (c) attaching an adhesive tape at a position corresponding to a vertex at which at least one side of the one end of the film sheet is cut in an oblique direction and protruded; And (d) winding the film sheet on the film sheet take-up roll.

The film sheet winding roll according to the present invention and the film sheet winding method using the same are formed in a double layer structure having an inner core and an outer core formed on the outer peripheral surface of the inner core, It is possible to minimize the occurrence of pressing marks at the initial connection step portion of the film sheet wound around the outer peripheral surface of the outer core.

A film sheet take-up roll according to an embodiment of the present invention and a film sheet take-up method using the same are characterized in that a film sheet, at least one side of which is cut in an oblique direction, is affixed to one end along an outer peripheral surface of an outer core, The surface cut in the oblique direction serves to disperse the winding pressure so that the occurrence of the pressing mark in the initial connection step portion due to the self-load of the film sheet and the winding pressure can be minimized.

1 is a perspective view showing a general film sheet winding roll.
2 is a sectional view showing a general film sheet winding roll.
3 is a perspective view showing a film sheet winding roll according to an embodiment of the present invention.
4 is a cross-sectional view showing a film sheet take-up roll according to an embodiment of the present invention.
5 is a perspective view showing a film sheet winding roll according to another embodiment of the present invention.
6 is a perspective view showing a film sheet winding roll according to another embodiment of the present invention.
7 is a process flow chart showing a film sheet winding method according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Fig. 1 is a perspective view showing a general film sheet take-up roll, and Fig. 2 is a cross-sectional view showing a general film sheet take-up roll.

Referring to FIGS. 1 and 2, in the case of a general film sheet take-up roll 10, the film sheet 50 is wound on the outer circumferential surface of the film sheet take-up roll 10 along one direction.

Particularly, the general film sheet 50 is formed by attaching the short side S1 of the one end portion thereof, that is, the initial connecting portion thereof with the tape 60 and then winding the film sheet along the long side S2 direction of the film sheet 50 Rolls 50 to several tens to several hundreds of times.

However, when the operation of winding up the film sheet 50 to the film sheet take-up roll 1 is completed, the self-load of the film sheet 50 at the initial connection step portion F of the film sheet 50, A problem that a pressing mark of an end mark is generated often occurs. As a result, the pressing mark of such an end mark acts as a factor that damages the value of the film sheet 50.

Hereinafter, a film sheet winding roll according to a preferred embodiment of the present invention and a film sheet winding method using the same will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a film sheet take-up roll according to an embodiment of the present invention, and FIG. 4 is a sectional view showing a film sheet take-up roll according to an embodiment of the present invention. At this time, in Fig. 3, the film sheet wound on the film sheet take-up roll is shown together.

3 and 4, the film sheet take-up roll 100 according to the embodiment of the present invention includes an inner core 120 and an outer core 140.

The inner core 120 may have a pipe shape having a first diameter. The inner core 120 is preferably formed of a material having a predetermined strength, which is a part of the body of the film sheet take-up roll 100. The inner core 120 may be made of paper, fiber reinforced plastic (FRP), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile-butadiene- ) May be used.

At this time, the inner core 120 preferably has a thickness of 1 to 100 mm. When the thickness of the inner core 120 is less than 1 mm, the thickness of the inner core 120 is too thin, so that it may be difficult to secure a certain strength. On the contrary, when the thickness of the inner core 120 is more than 100 mm, the effect on the thickness increase is insignificant, which is not economical.

The outer core 140 may be formed to surround the outer circumferential surface of the inner core 120, and may have a second diameter larger than the first diameter. That is, the outer core 140 is attached along the outer circumferential surface of the inner core 120, and is adhered to the inner core 120.

The outer core 140 is wound with a film sheet 150, at least one side S1 of which is cut in an oblique direction.

In particular, the outer core 140 is preferably made of a soft material having a higher impact absorbing ability than that of the inner core 120. This is because when the film is wound with the film sheet 150, So that the occurrence of the pressing mark of the end mark can be minimized by effectively absorbing the pressing of the end mark caused by the end mark. The outer core 140 may be made of poly ethylene foam, polypropylene foam, polyurethane foam, latex foam, or the like, which is excellent in impact absorbing ability .

Further, the outer core 140 preferably has a thickness of 0.2 to 10 mm. When the thickness of the outer core 140 is less than 0.2 mm, since the thickness of the outer core 140 is too thin, the shock absorbing effect is insignificant and the effect of suppressing the occurrence of the end mark due to the initial connection step may be insufficient. On the other hand, when the thickness of the outer core 140 exceeds 10 mm, it is difficult to manufacture the outer core 140 with a uniform thickness on the outer circumferential surface of the inner core 120, and thus irregular protrusions may be formed.

The outer surface of the outer core 140 is covered with an adhesive tape 160 disposed at a position corresponding to a vertex P where at least one side S1 of the film sheet 100 is cut in an oblique direction, May be attached to the outer surface. As the adhesive tape 160, it is preferable to use a double-sided tape, in order to secure a certain level of adhesive strength. At this time, the adhesive tape 160 made of a double-sided tape is disposed between the film sheet take-up roll 100 and the film sheet 150 and plays a role of firmly attaching the film sheet 150 to the film sheet take- .

The adhesive tape 160 may have an area corresponding to the vertex P portion. In the case of the general film sheet take-up roll 10 shown and described in Figs. 1 and 2, an adhesive tape (not shown) is attached along one side end of the film sheet 50, that is, along the short side S1 direction of one side.

Alternatively, in the case of the film sheet take-up roll 100 according to the present invention, the adhesive tape 160 having an area corresponding to only the vertex P of the film sheet 150 is used to attach the outer core 140 The film sheet is attached to the outer circumferential surface. Particularly, in the present invention, since the film sheet 100 has an asymmetric structure, it becomes possible to secure a sufficient adhesive force. As a result, the film sheet take-up roll 100 according to the present invention can reduce the use amount of the adhesive tape 160 to about 1/5 or less as compared with a general film sheet take-up roll, .

At this time, the adhesive tape 160 can be selected from polyester, polyurethane, acrylic resin, ethylene co-vinyl acetate (EVA), polyvinyl acetate (PVAc), polyvinyl chloride (PVC)

As shown in FIG. 3, the film sheet 150 may have a trapezoidal shape in which one side S1 of one end is cut in an oblique direction. In this case, it is preferable that the adhesive tape 150 is cut off at a corresponding area corresponding to one protruding vertex P of the film sheet 150 by diagonal cutting.

Alternatively, the film sheet may be designed in various shapes such as a pentagon shape, a semicircular shape, and the like, which will be described below with reference to the accompanying drawings.

FIG. 5 is a perspective view showing a film sheet take-up roll according to another embodiment of the present invention, and FIG. 6 is a perspective view showing a film sheet take-up roll according to another embodiment of the present invention.

First, as shown in FIG. 5, the film sheet 150 may have a pentagonal shape in which the opposing sides S1 of the one end are cut in the oblique direction, respectively. In this case, the adhesive tape 160 has the vertex P protruding to the central portion of one end of the film sheet 150 by cutting the facing sides S1 in the oblique direction, respectively. At this time, it is preferable that the adhesive tape 160 is cut and attached to the corresponding area corresponding to the vertex P projecting to the center portion.

Alternatively, as shown in FIG. 6, the film sheet 150 may have a semicircular shape in which the opposing sides S1 of one end thereof are curved in a round shape. Although not shown in the drawing, the shape of the film sheet 150 is not limited to these, and the design may be changed in various forms such as 'V' and 'W'.

The film sheet take-up roll according to the above-described embodiment of the present invention is formed in a double-layer structure having an inner core and an outer core formed on an outer circumferential surface of the inner core, and the material of the outer core is made of a soft material It is possible to minimize the occurrence of pressing marks at the initial connection step portion of the film sheet wound around the outer peripheral surface of the outer core.

In the film sheet winding roll according to the embodiment of the present invention, at least one side of the outer core is wound on one side of the film sheet with one side thereof cut obliquely, So that the generation of the pressing mark at the initial connection step portion due to the winding pressure can be minimized.

Hereinafter, a film sheet winding method using a film sheet take-up roll according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 7 is a process flow chart showing a film sheet winding method according to an embodiment of the present invention, which will be described in connection with FIG.

3 and 7, the film sheet winding method according to the illustrated embodiment of the present invention includes a film sheet take-up roll preparing step S210, a film sheet placing step S220, an adhesive tape attaching step S230, And a sheet winding step S240.

Preparation of film sheet winding roll

In the film sheet winding roll preparing step S210, a film sheet winding roll 100 having an inner core 120 and an outer core 140 formed to surround the outer circumferential surface of the inner core 120 is provided.

At this time, it is preferable that the inner core 120 is formed as a part of the body of the film sheet take-up roll 100 and made of a material having a certain strength. The inner core 120 may be made of paper, fiber reinforced plastic (FRP), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile-butadiene- ) May be used.

The thickness of the inner core 120 is preferably 1 to 100 mm. When the thickness of the inner core 120 is less than 1 mm, the thickness of the inner core 120 is too thin, so that it may be difficult to secure a certain strength. On the contrary, when the thickness of the inner core 120 is more than 100 mm, the effect on the thickness increase is insignificant, which is not economical.

The outer core 140 is formed to surround the outer circumferential surface of the inner core 120 and is attached along the outer circumferential surface of the inner core 120 and is joined to the inner core 120.

At this time, it is preferable that the outer core 140 is made of a soft material having a superior impact absorbing ability as compared with the material of the inner core 120. This is because when the film sheet 150 is wound, This is to minimize the generation of the pressing mark of the end mark by effectively absorbing the pressing of the mark. The outer core 140 may be made of poly ethylene foam, polypropylene foam, polyurethane foam, latex foam, or the like, which is excellent in impact absorbing ability .

Further, the outer core 140 preferably has a thickness of 0.2 to 10 mm. When the thickness of the outer core 140 is less than 0.2 mm, since the thickness of the outer core 140 is too thin, the shock absorbing effect is insignificant and the effect of suppressing the occurrence of the end mark due to the initial connection step may be insufficient. On the contrary, when the thickness of the outer core 140 exceeds 10 mm, it is difficult to manufacture the outer core 140 with a uniform thickness on the outer circumferential surface of the inner core, and thus irregular protrusions may be formed.

Film sheet placement

In the film sheet placing step S220, the film sheet 150, at least one side S1 of which is cut at one side end in the oblique direction, is disposed in the film sheet take-up roll 100. [

The film sheet 150 is adhered to the outer surface of the outer core 140 through the adhesive tape 160 disposed at a position corresponding to the vertex P where at least one side S1 of the one side end is cut in the oblique direction, .

Meanwhile, as shown in FIG. 3, the film sheet 150 may have a trapezoidal shape in which one side S1 of one end is cut in an oblique direction. In this case, it is preferable that the adhesive tape 160 is cut off at an area corresponding to one protruding vertex portion of the film sheet 150 by diagonal cutting.

Alternatively, as shown in Fig. 5, the film sheet 150 may have a pentagonal shape in which the opposite sides S1 of the one end are cut in the oblique direction, respectively. In this case, the adhesive tape 160 has the vertex P protruding to the central portion of one end of the film sheet 150 by cutting the facing sides S1 in the oblique direction, respectively. At this time, it is preferable that the adhesive tape 160 is cut and attached to the corresponding area corresponding to the vertex P projecting to the center portion.

Further, as shown in FIG. 6, the film sheet 150 may have a semicircular shape in which the opposing sides S1 of the one end are curved in a round shape.

With adhesive tape

3 and 7, in the step of attaching the adhesive tape (S230), at least one side S1 of one side of the film sheet take-up roll 100 and the film sheet 150 is cut off in an oblique direction to form a vertex The adhesive tape 160 is disposed at a position corresponding to the film sheet take-up roll 100 and the film sheet 150 is attached to the film sheet take- As a result, one end of the film sheet 150 can be attached to the outer circumferential surface of the outer core 140 via the adhesive tape 160.

At this time, the adhesive tape 160 may have an area corresponding to a vertex P portion where at least one side S1 of the one side end of the film sheet 150 is cut out in an oblique direction and protruded.

Particularly, in the present invention, it is preferable to adhere the film sheet 150 to the outer circumferential surface of the outer core 140 using the adhesive tape 160 having an area corresponding only to the vertex of the film sheet 150, Since the film sheet 150 has an asymmetric structure, even if only the portion corresponding to one end of the film sheet 150 is adhered by using the adhesive tape 160 having the area corresponding to the vertex P, It is possible to do that. As a result, the film sheet take-up roll 100 according to the present invention can reduce the use amount of the adhesive tape 160 to about 1/5 or less as compared with a general film sheet take-up roll, .

At this time, the adhesive tape 160 can be selected from polyester, polyurethane, acrylic resin, ethylene co-vinyl acetate (EVA), polyvinyl acetate (PVAc), polyvinyl chloride (PVC)

Film sheet winding

In the film sheet winding step (S240), the film sheet 150 is wound around the film sheet take-up roll 100.

At this time, the film sheet 150 is wound in one direction, that is, in the film sheet 150 by the rotational motion of the film sheet take-up roll 100 in a state where one end thereof is attached to the outer peripheral surface of the outer core 140 via the adhesive tape 160 150 along the long side (S2) direction of the outer core (140). Here, the rotation speed of the film sheet take-up roll 100 is not particularly limited, but it is preferable from the viewpoint of productivity to perform the rotation at a speed of 10 rpm or more.

The method of winding a film sheet according to an embodiment of the present invention comprises a double-layer structure having an inner core and an outer core formed on an outer circumferential surface of the inner core, and the material of the outer core is made of a soft material By using the film sheet take-up roll, it is possible to minimize the occurrence of pressing marks in the initial connection step portion of the film sheet wound around the outer circumferential surface of the outer core.

Further, in the film sheet winding method according to the embodiment of the present invention, the film sheet, at least one side of which is cut in an oblique direction, is wound on one end along the outer circumferential surface of the outer core, Can minimize the occurrence of pressing marks in the initial connection step portion due to the film sheet self-load and the winding pressure.

Example

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. It is to be understood, however, that the same is by way of illustration and example only and is not to be construed in a limiting sense.

The contents not described here are sufficiently technically inferior to those skilled in the art, and a description thereof will be omitted.

1. Winding film sheet

Example 1

A film sheet having a trapezoidal shape in which one side of one end was cut in the oblique direction was attached to the film sheet take-up roll using an adhesive tape, and then the film sheet was wound 10 times on the film sheet take-up roll. Then, after the wound film sheet was uncoiled, it was visually determined whether or not an end mark pressing trail occurred at the initial connection step portion of the film sheet.

At this time, a latex material having a thickness of 1 mm was used for the inner core, a paper material having a thickness of 50 mm, and an ethylene co-vinyl acetate (EVA) film having a thickness of 20 μm was used for the adhesive tape.

Example 2

Except that a polypropylene (PP) material having a thickness of 20 mm was used as the inner core and a polyurethane material having a thickness of 0.5 mm was used as the outer core. The sheet was wound.

Example 3

Except that an ABS (acrylonitrile-butadiene-styrene) material having a thickness of 80 mm was used as an inner core, and a latex material having a thickness of 2.5 mm was used as an outer core. The sheet was wound.

Example 4

A film sheet was wound on a film sheet take-up roll in the same manner as in Example 1, except that a film sheet having a pentagonal shape in which two sides of one end were cut in the oblique direction was used.

Comparative Example 1

A film sheet having a rectangular shape was attached to the film sheet take-up roll using an adhesive tape, and the film sheet was wound 10 times on the film sheet take-up roll. Then, after the wound film sheet was uncoiled, it was visually determined whether or not an end mark pressing trail occurred at the initial connection step portion of the film sheet.

At this time, a single core made of polyethylene (PE) was used as the film sheet winding roll, and a polyester film having a thickness of 30 mu m was used as the adhesive tape.

Comparative Example 2

Except that a polyethylene (PE) material having a thickness of 150 mm was used as an inner core, and a polyurethane material having a thickness of 6 mm was used as an outer core. In the same manner as in Example 1, .

2. Property evaluation

Table 1 shows the results of measurement of the number of end mark pressing occurrences for the films wound in the method according to Examples 1 to 4 and Comparative Examples 1 and 2. At this time, the number of occurrences of the end mark pressing member is determined by winding the film sheet 10 times on the film sheet winding roll, then uncoiling the wound film sheet, and then determining whether the end mark pressing- Whether or not they were visually distinguished.

 [Table 1]

Referring to Table 1, it can be seen that, in the case of the films wound by the method according to Examples 1 to 4, the number of occurrences of the end mark pressing marks is considerably small as compared with the films wound by the method according to Comparative Examples 1 and 2 have.

As a result of the experiment, it was confirmed that the end mark pressing state appears clearly in the case of the films wound by the method according to Comparative Examples 1 and 2. On the other hand, in the case of the films wound by the method according to Examples 1 to 4, It was confirmed that the pressing mark appeared to be clearly blurred.

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 embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. . Accordingly, the true scope of the present invention should be determined by the following claims.

100: Film sheet take-up roll 120: Internal core
140: outer core 150: film sheet
160: Adhesive tape
S210: Film sheet winding roll preparing step
S220: Film sheet placement step
S230: Step of attaching adhesive tape
S240: Film sheet winding step

Claims (15)

An inner core having a pipe shape and having a thickness of 1 to 100 mm; And
And an outer core wound around the outer circumferential surface of the inner core and having a thickness of 0.2 to 3 mm and wound with a film sheet at least one side of which is cut at one side in an oblique direction,
The outer core is formed of one selected from the group consisting of poly ethylene foam, polypropylene foam, polyurethane foam and latex foam,
Wherein the film sheet is attached to an outer surface of the outer core via an adhesive tape disposed at a vertex at which at least one side of the one end is cut out in an oblique direction and protrudes and the adhesive tape has an area corresponding to the vertex portion ,
Wherein at least one side of the outer core is wound with a film sheet cut at an oblique direction at one side thereof, the outer core is formed of a soft material as compared with the inner core, so that when the film sheet is wound, And the pressing of the end mark is absorbed to suppress the generation of the pressing mark of the end mark.
delete delete The method according to claim 1,
The inner core
And is formed of one material selected from paper, fiber reinforced plastic (FRP), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile-butadiene-styrene (ABS), and polystyrene Wherein the film roll is wound on the film roll.
delete delete delete The method according to claim 1,
The adhesive tape
Wherein the film roll is formed of one selected from the group consisting of polyester, polyurethane, acrylic resin, ethylene co-vinyl acetate (EVA), polyvinyl acetate (PVAc), and polyvinyl chloride (PVC).
The method according to claim 1,
The film sheet
Wherein one side of said one end has a trapezoidal shape cut in an oblique direction.
The method according to claim 1,
The film sheet
Wherein two opposing sides of said one end have a pentagonal shape cut in oblique directions, respectively.
(a) providing a film sheet winding roll having an inner core having a thickness of 1 to 100 mm and an outer core formed to surround the outer circumferential surface of the inner core, the outer core having a thickness of 0.2 to 3 mm;
(b) disposing a film sheet, at least one side of one end of which is cut in an oblique direction, in the film sheet winding roll;
(c) attaching the film sheet to the film sheet take-up roll by disposing an adhesive tape at a position corresponding to a vertex at which at least one side of the film sheet take-up roll and one side end of the film sheet is cut in an oblique direction and protruding, ; And
(d) winding the film sheet on the film sheet take-up roll,
In the step (a), the outer core may be made of a soft material as compared with the inner core, and the outer core may be formed of a poly ethylene foam, a polypropylene form, a polyurethane foam, and a latex foam,
In the step (c), the film sheet is attached to an outer surface of the outer core via an adhesive tape disposed at a vertex at which at least one side of the one end is cut in an oblique direction and protruded, And has an area corresponding to the portion,
Wherein in the step (d), when the film sheet is wound, the outer core absorbs the pressing of the end mark due to the winding pressure, thereby suppressing the generation of the pressing mark of the end mark.
12. The method of claim 11,
In the step (a)
The inner core may be made of one selected from the group consisting of paper, fiber reinforced plastic (FRP), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), acrylonitrile-butadiene- Wherein the outer core is made of one selected from the group consisting of polyurethane and latex.
12. The method of claim 11,
In the step (b)
The film sheet
Wherein one side of the one end has a trapezoidal shape cut in an oblique direction.
12. The method of claim 11,
In the step (b)
The film sheet
And the two opposite sides of the one end have a pentagonal shape cut in the oblique direction, respectively.
delete

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