KR101752246B1 - Core apparatus and method for winding film web - Google Patents

Abstract

A web winding core device and a web winding method capable of reducing wrinkles or a local region generated during transfer of an initial web among webs wound on the core are disclosed. According to the present invention, there is provided a core comprising: a cylindrical core including a groove recessed from a surface to a predetermined depth; And an accessory means mounted in the groove of the core to compensate for the thickness of the initial web to be wound on the surface of the core.
Accordingly, the present invention can actively cope with various thicknesses and types of webs and adhesive means, thereby realizing the effect of minimizing wrinkles or transcription zones.

Description

TECHNICAL FIELD [0001] The present invention relates to a web winding core device and a web winding method.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web winding core device and a web winding method, and more particularly, to a web winding core device and a web winding method which can reduce wrinkles or a self- And a winding method.

In general, the web winding core is a subsidiary material that is necessary for storing and moving the product in the roll industry, and the material and the size of the core are various and the usage amount is also large according to the characteristics of the product. PVC, ABS, FRP, paper, etc. are mainly used as the main material, and elastic members are sometimes processed on the surface. Most of the cores made of these materials are made in cylindrical shape, and may be different depending on the material of the web wound on the core.

However, in the case of a web composed of most of the polyesters or metals, it is possible to fix the web to the cylindrical core by attaching a double-sided adhesive tape to the core surface and attaching a web thereon. At this time, wrinkles or marks are generated in the transverse direction at the initial stage of winding of the web due to the step difference caused by the thickness of the double-sided adhesive tape and the thickness of the web, and transfer occurs.

Accordingly, in the past, wrinkle transfer marks have been used as they are in industries with low quality requirements, but in the electric and electronic industries, wrinkle transfer sections have not been used in most cases, and they have been classified as industrial wastes.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems of the prior art, and it is an object of the present invention to reduce the initial unavailability period caused by the thickness difference of web and adhesive tape (or adhesive) A web winding core device and a web winding method for reducing the manufacturing cost and industrial waste by improving the yield and improving the yield.

The features of the present invention for achieving the objects of the present invention as described above and performing the characteristic functions of the present invention described below are as follows.

According to an embodiment of the present invention, there is provided a cylindrical core comprising a groove recessed from a surface to a predetermined depth; And an accessory means mounted in the groove of the core to compensate for the thickness of the initial web to be wound on the surface of the core.

The attachment means has a bottom structure having the same lower end structure as the cylindrical shape of the core and having an upper end at the same height as the surface of the core and an upper end at the other end lower than a surface height of the core by the thickness of the initial web. .

In addition, the attachment means may be sloped sloped when the two structures are formed due to the structure of the upper side and the other side of the upper end.

It further comprises a double-sided adhesive means between the initial web and the surface of the core, wherein the adhesive means allows the initial web to be fixed to the core, thereby winding the web including the initial web onto the core .

The transverse and longitudinal widths of the inclined surfaces of the attachment means may be determined by at least one of an initial web thickness, a thickness of the bonding means, a diameter of the core, and a material hardness of the core.

According to another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: (a) forming a groove in the core to a predetermined depth from a surface of the core; (b) seating an accessory means in the groove, the accessory means having an upper end on one side equal to a surface height of the core and an upper end on the other end being lower than a surface height of the core by an initial web thickness; And (c) winding the web onto the cylindrical shape of the core by attaching an initial web to the sloped surface of the attachment means.

Here, in the step (c), the initial web may be attached to the slope surface by an adhesive means attached between the core and the initial web.

The step (c) may further comprise the step of adjusting the thickness of the initial web in the range of the inclined slope satisfying the following expression (1) representing the correlation between the transverse width a of the slope surface and the inner diameter c of the core, The initial web and adhesive means can be attached to the slope surface.

a / c < 0.5 (1)

According to the present invention, by improving the structure of the core surface and the attachment means at the wrinkle or transcription portion of the initial web, even if the thickness and kind of various webs and adhesive means are applied, it is possible to actively cope with it, .

In addition, as described above, by minimizing the wrinkles or the transcription region, it is possible to reduce the processing cost of the industrial waste, thereby reducing the manufacturing cost and improving the quality.

1 is a diagram illustrating an exemplary web winding core apparatus 100 according to an embodiment of the present invention.
FIG. 2 is a sectional view showing the accessory means 120 according to an embodiment of the present invention in more detail, and FIG. 3 is a perspective view.
5 is a view for explaining step S210, FIG. 6 is a view for explaining step S220, and FIG. 7 is a view for explaining a web winding method according to an embodiment of the present invention. Fig.
8 is a diagram showing the correlation between the vertical width a of the slope 123 and the inner diameter b of the core according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Web winding core device

1 is a diagram illustrating an exemplary web winding core apparatus 100 according to an embodiment of the present invention.

1, a web winding core apparatus 100 according to an embodiment of the present invention includes a core 110, an attachment means 120, an initial web 130, and a bonding means 140 .

First, the core 110 of the present invention has a cylindrical shape and has grooves 111 that are waved at a predetermined depth from the surface, and the shape of the grooves 111 is the same as that of the attachment means 120 Shape. The shape of the groove 111 may have various shapes depending on the shape of the core and the depth is designed to be flexible according to the shape of the core 110 and the thickness of the web 130 to be wound. The attachment means 120, which must be designed in the same manner as the shape of the groove 111, will be described in more detail.

As described above, the core 110 having the grooves 111 may be made of various materials such as PVC, ABS, FRP, and paper. However, the present invention is not limited thereto, and other materials are possible, and such a case can be included within the scope of the present invention.

Next, the accessory means 120 of the present invention has the same shape as the groove 111 of the core 110 and has the same shape as that of the initial web 130 to be wound on the surface of the core 110 mounted on the groove 111 Thereby compensating for the thickness. In order to perform such a function, the upper end side of the accessory means 120 has a sloping slope 123, and the lower end side has a structure corresponding to a cylindrical portion. In the case where the shape of the core is not cylindrical, it may be designed corresponding to the corresponding circle. The structure of this accessory means 120 will be described in more detail later in FIG.

The initial web 130 of the present invention is then attached to the top of the accessory means 120 as part of the web 130A so that the remaining web 130A can be wound around the surface of the cylindrical core 110 And is fixed to the core 110. At this time, in order to fix the initial web 130 to the upper part of the accessory unit 120 that is seated in the groove 111 of the core 110 and exposed to the outside, the initial web 130 and the accessory unit 120 Bonding means 140 for both sides can be further formed between the inclined sloping surfaces 123. [

The adhesive means 140 of the present invention is a double-sided adhesive tape or adhesive which has one end attached to the slope 123 of the attachment means 120 and the other end attached to the lower end of the initial web 130 to be formed on the upper side, And is formed on the slope surface 123.

Since the adhesive means 140 is formed on the oblique sloped surface 123, the step difference due to the adhesive means 140 can be reduced. Even if the initial web 130 is formed, the corrugation of the initial web 130, Can be reduced.

Hereinafter, the structure of the accessory means 120 will be described in more detail. FIG. 2 is a sectional view showing the accessory means 120 according to an embodiment of the present invention in more detail, and FIG. 3 is a perspective view.

As shown, the accessory means 120 of the present invention has the same bottom structure as the cylindrical shape of the core 110 to perform the function of compensating for the thickness of the initial web 130 to be wound on the surface of the core 110 And the upper end 122a of the upper end 122a is equal to the surface height of the core 110 and the upper end 122b of the upper end 122b is lower than the surface height of the core 110 by the thickness of the initial web 130 to be wound. 122). Between the lower structure 121 and the upper structure 122, there is a stepped shape structure 124 that is reduced in the upward direction.

Thus, when the two structures are formed on the same structure as the upper side 122a and the upper side 122b, the shape of the sloping slope 123 can be achieved. The sloping surface 123 may be of course adhered to the adhesive means 140.

The width a and the width b of the slope 123 of the accessory means 120 are determined by the thickness of the initial web 130, the thickness of the bonding means 140, the diameter of the core 110, ) ≪ / RTI > In other words, the width (a) of the slope face 123 of the accessory means 120 and the width (a) of the accessory means 120 are determined by reflecting at least one of the thickness of the initial web 130, the thickness of the bonding means 140, By determining the vertical width b, it is possible to actively compensate for the thickness of the initial web 130 to be wound on the surface of the core 110, thereby reducing the transfer marks or wrinkles of the initial web 130 .

The transverse width a of the slope surface 123 of the accessory means 120 can be designed to be as small as possible within the range of the initial web 130 to reduce the warp marks or wrinkles of the initial web 130 . These examples can be seen in the following [Table 1].

Web winding method

4 is a flowchart exemplarily showing a web winding method according to an embodiment of the present invention.

Referring to FIG. 4, a web winding method (S200) according to an embodiment of the present invention includes a step S210 of forming a groove in a core, a step S220 of placing an accessory means in a groove, And winding up the web and the web (S230).

First, in step S210, the grooves 111 are formed at a predetermined depth from the surface of the core 110. Such an example can be shown in FIG. The lower end of the groove 111 has the same shape as the cylindrical shape of the core 110 and may have a shape of a groove 111 which is stepped from both ends of the lower end to form the upper end of the same height. However, the lower end side of the groove 111 is designed to actively match the shape of the core.

Then, in step S220, the accessory 120 having the same shape as the groove 111 of the core 110 is designed and is placed in the groove 111. At this time, the attached accessory means 120 includes a top side 122a that is the same as the surface height of the core 110 and a top side 122b that is lower than the surface height of the core 110 by the thickness of the initial web 130. [ Structure (122). When the upper end 122a and the upper end 122b are connected to each other, a sloped surface 123 is formed. The bottom structure and the side structure are the same as the grooves 111 of the core 110.

A state in which the accessory means 120 having such a structure is seated in the groove 111 of the core 110 can be shown in FIG.

Finally, in step S230, the initial web 130 is attached to the inclined plane 123 of the accessory 120 to wind the web on the cylindrical shape of the core 110. [ Such an example can be shown in FIG. At this time, a double-sided adhesive means 140 is further provided between the accessory means 120 and the initial web 130, and the initial web 130 is attached to the slope face 123 of the accessory means 120 through the adhesive means 140 130 are preferably attached. Such an example can be shown as the result shown in Fig. 1 described above.

Here, the sloping surface 123 of the accessory means 120 can reduce the wrinkle or trailing phenomenon of the initial web to a standard or less, depending on how to design the vertical width and the horizontal width. This example will be described with reference to FIG. 8 .

8 is a graph showing the correlation between the transverse width a of the slope 123 and the inner diameter c of the core according to an embodiment of the present invention.

8, the sloped surface 123 of the accessory means 120 of the present invention shows a correlation between the lateral width a of the sloped surface 123 and the inner diameter c of the core 110 shown in Fig. 7 (A) and the width (a) of the core to reflect the at least one element of the initial web thickness, the thickness of the bonding means, the diameter of the core and the material hardness of the core, b).

a / c < 0.5 (1)

As a result, the sloped surface 123 of the accessory means 120 satisfies the condition (Eq. 1) while reflecting at least one of the initial web thickness, the thickness of the bonding means, the diameter of the core, By designing the width and the vertical width, it is possible to actively deform, thereby making it possible to optimally reduce the wrinkle or mark transfer phenomenon of the initial web.

In order to obtain such results, the following examples and comparative examples of Table 1 were carried out.

division material Core inner diameter Core thickness Accessory means
Width Accessory means
Height Width Auxiliary steps
(Web thickness) Example 1 PVC 6 inch 12 mm 1 inch 4.5 mm 200 탆 Example 2 PVC 6 inch 12 mm 2 inch 4.5 mm 200 탆 Comparative Example 1 PVC 6 inch 12 mm none none 200 탆 Comparative Example 2 PVC 6 inch 12 mm 3 inch 4.5 mm 200 탆 Comparative Example 3 PVC 6 inch 12 mm 4 inch 4.5 mm 200 탆

In the above embodiments, a double-sided adhesive tape having a thickness of about 15 mu m was attached all over the width of the sloped surface at the center of the slope, and then the web having a thickness of 200 mu m was wound 300 m and kept at room temperature for one day. The above comparative examples are a commonly used cylindrical core and have the same specifications as those of the embodiments. Similarly, 200 μm-thick webs were wound around 300 M of the web using a double-sided adhesive tape having a thickness of 15 μm and then stored at room temperature for one day. All of the examples and comparative examples were wound up under the same equipment conditions, and the degree of occurrence of warp marks was confirmed one day later, and the results as shown in Table 2 were obtained.

division Transfer zone (M) Initial Web Transcription Strength Example 1 4.3 medium Example 2 7.8 medium Comparative Example 1 42.0 River Comparative Example 2 18.7 medium Comparative Example 3 21.2 medium

As shown in Table 2, it can be seen that the generation of the initial transfer marks was improved by about 80% in the Examples in comparison with the Comparative Examples. As in Comparative Examples 2 and 3, it was confirmed that the width of the slope of the accessory means should not be excessively increased because the degree of occurrence of the transfer marks increases as the width of the accessory slope becomes wider. As can be seen from the comparison between the case of applying the accessory means in Examples and Comparative Examples 2 and 3 and the Comparative Example 1 in which the accessory means are not applied, In Table 2, the local station strength is set to strong, medium and weak.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. The embodiments described above are therefore to be considered in all respects as illustrative and not restrictive.

According to the present invention, the use range is broad in the general roll industry, such as a polyester film used as a material for various industries, an ITO film used as an electric and electronic material, or an industry for winding metals such as copper foil for FPCB .

100: web winding core device 110: core
111: groove 120: accessory means
121: bottom structure 122: top structure
123: slope 124: stepped structure
130: initial web 140: adhesive means
130A: Web

Claims (8)

delete A cylindrical core 110 including a groove 111 which is recessed to a predetermined depth from the surface; And
An accessory means (120) mounted on the groove (111) of the core (110) to compensate for the thickness of the initial web (130) to be wound on the surface of the core (110);
Wherein the web winding core apparatus comprises:
The accessory means 120 has the same lower end structure 121 as the cylindrical shape of the core 110. The upper end 122a is equal to the surface height of the core 110 and the upper end 122b And a top structure (122) lower than a surface height of the core (110) by a thickness of the initial web (130). 3. The method of claim 2,
The accessory means (120)
Wherein the slanting slope (123) is formed when the two structures are formed due to the structure of the upper end side (122a) and the upper end side (122b). The method of claim 3,
Further comprising a double-sided adhesive means (140) between the initial web (130) and the surface of the ancillary means (110)
The adhesive means 140 is configured to fix the initial web 130 to the core 110 and wind the web 130A including the initial web 130 to the core 110. [ Wherein the web winding core apparatus comprises: The method of claim 3,
The lateral and vertical widths of the sloping faces 123 of the accessory means 120 are determined by at least one of the initial web thickness, the thickness of the bonding means, the diameter of the core, and the material hardness of the core. Web winding core device. (a) forming a groove in the core to a predetermined depth from a surface of the core;
(b) seating an accessory means in the groove, the accessory means having an upper end on one side equal to a surface height of the core and an upper end on the other end being lower than a surface height of the core by an initial web thickness; And
(c) attaching an initial web to the sloped surface of the attachment means to wind the web onto the cylindrical shape of the core;
Wherein the web is wound around the web. The method according to claim 6,
The step (c)
Wherein said initial web is attached to said sloped surface by an attachment means attached between said attachment means and said initial web. 8. The method of claim 7,
The step (c)
The thickness of the initial web and the thickness of the bonding means are determined within the range of the sloped surface satisfying the following expression (1), which represents the correlation between the transverse width a of the sloped surface and the inner diameter c of the core, And the adhesive means is attached to the slope surface.
a / c < 0.5 (1)

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