JP6208276B2 - Cut-out laminate sheet - Google Patents

Description

Field of Invention

  The present invention relates to a cut-out laminate sheet prepared by shearing a laminate sheet having a substrate sheet and a protective sheet disposed on the substrate sheet, and a method for preparing the same. The present invention also relates to a cut sheet from which the protective sheet has been removed.

Background of the Invention

  In order to prepare a functional substrate sheet having a special shape that can be applied to electronic components and the like, protective sheets are laminated on both sides of the substrate sheet. The laminate sheet is then subjected to a shearing process as described in the prior art, eg, Korean Patent Publication No. 10-1198919.

  Such conventional protective sheets are generally removed before the substrate sheet is applied to the final product, however, it is not easy to remove the protective sheet that has been subjected to a shearing process because the laminate sheet is laminated. This is because both the protective sheet and the substrate sheet thus formed have the same shape. Even when brittle sheets, such as ceramic sheets, are used, their properties may be degraded due to tears that may be formed in the substrate sheet during removal of the protective sheet. Furthermore, since it takes time to remove the protective sheet, the overall productivity may be reduced.

  Accordingly, it is an object of the present invention to provide a cut-out laminate sheet from which a protective sheet can be easily removed.

  It is another object of the present invention to provide a method for preparing it in an efficient manner.

  It is a further object of the present invention to provide a cutout sheet from which the protective sheet has been removed.

  According to one aspect of the present invention, there is provided a method for producing a cut-out laminate sheet, wherein (a) preparing a laminate sheet including a substrate sheet and a first protective sheet disposed on one side of the substrate sheet, (b) ) A step of obtaining a laminate sheet having a portion protruding from its side edge by subjecting the laminate sheet to a first shearing step; and A method is provided that includes removing the substrate sheet component in the portion and leaving only the first protective sheet component in the protruding portion of the laminate sheet.

  According to another aspect of the present invention, a cut-out laminate sheet comprising a substrate sheet and a first protective sheet disposed on one side of the substrate sheet, the first protective sheet completely covering one side of the substrate sheet A cut-out laminate sheet is provided that has a portion that protrudes from the side edge of the covering and extends outward beyond the side edge of the substrate sheet.

  According to a further aspect of the present invention, there is provided a cut-out sheet comprising a first cut end as a result of a first shearing step and a second cut end as a result of a second shearing step, prepared by a shearing process. Provided.

  The cut-out laminate sheet according to the present invention has a protruding part that can be prepared with two simple shearing steps and allows easy removal of the protective sheet, and thus has a wide range of industrial applications, such as brittle sheets and It can be effectively used in a flexible sheet.

  The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic cross-sectional view showing a manufacturing process of a cut-out laminate sheet of the present invention by using a combination type shearing device set according to an example of the present invention. FIG. 2 is a schematic cross-sectional view showing a manufacturing process of a cut-out laminate sheet of the present invention by using a separable shear device set according to another example of the present invention. FIG. 3 shows a plan view and a cross-sectional view of (a) a laminate sheet after the first shearing step and (b) a laminate sheet after the second shearing step in an embodiment. FIG. 4 illustrates a plan view of the substrate sheet (cutout sheet) after the second shearing step according to the present invention. FIG. 5 is a scanning electron microscope (SEM) photograph showing the cut end of the substrate sheet body (cutout sheet) in which the protruding portion is cut during the second shearing process according to the present invention.

Reference numeral 10 in the drawing: (cut out) laminate sheet, 11: (cut out) laminate sheet body,
12: The protruding part of the (cut out) laminate sheet,
15: The boundary between the main body and the protruding part,
100: Substrate sheet 101: Substrate sheet main body (cutout sheet),
102: The protruding part of the substrate sheet, 107: The first cut end,
108: a boundary line between the first and second cut ends,
109: second cut end, 210: first protective sheet,
211: the first protective sheet body,
212: The protruding part of the first protective sheet,
220: second protective sheet, 221: second protective sheet body,
222: The protruding part of the second protective sheet,
225: a fragment of the second protective sheet,
300: Combined shear device set 311: First pressure module 312: First support module 321: Second pressure module 322: Second support module 400: First shear device 500: Second shear Devices 411, 511: Pressurizing module 412, 512: Support modules 351, 451, 551: Upper dies 352, 452, 552: Lower dies d, d ′: Gap

Detailed Description of the Invention

  Hereinafter, the present invention will be described in detail.

  As used herein, the term “substrate sheet” generally refers to a flat sheet, and its shape, material, etc. are not particularly limited.

  The substrate sheet may be, for example, a brittle sheet of metal, metal alloy, metal oxide, ceramic, plastic or composite material thereof.

  The substrate sheet may be, for example, a flexible sheet of natural polymer resin, synthetic polymer resin, rubber, or a composite material thereof.

  The substrate sheet may be a functional sheet that performs a special function.

  In one embodiment, the substrate sheet may be a magnetic sheet containing a magnetic component that absorbs / shields electromagnetic waves. Examples of magnetic components may include magnetic oxides such as ferrites (eg, NiZn-, MgZn- or MnZn-based ferrites), magnetic metals such as permalloy and sendust, or composite materials thereof.

  As an example of a magnetic sheet, (i) a sintered magnetic sheet prepared by sintering a magnetic component at a high temperature, and (ii) adding a powdered magnetic component to a polymer resin and then forming the sheet And (iii) a composite magnetic sheet prepared by forming a magnetic layer on a polymer film using a magnetic component obtained by deposition, coating, aerosol deposition, or the like.

  As used herein, the terms “first protective sheet” and “second protective sheet” refer to sheets disposed on the outer surface of the substrate sheet, and their shapes, materials, etc. are not particularly limited.

  In one aspect, the first and / or second protective sheet may be a flexible sheet. The flexible sheet may be, for example, a polymer film, and more particularly a polymer film based on polyester, polyolefin, polyvinyl chloride, polycarbonate, or a mixture thereof.

  The adhesive layer may be formed on one side or both sides of the first and / or second protective sheet. For example, the adhesive layer may be an acrylic or silicon based adhesive layer.

  In the description of embodiments, when a sheet, film, etc. is said to be “above” or “below” other sheets, films, etc., the terminology includes both “directly” and “indirectly” meanings. Shall be understood. Further, the size of the elements and the relative sizes between the elements may be exaggerated for a better understanding of the invention, and the size of each element may not fully reflect the true size. .

Preparation of Cut-out Laminate Sheet The method for producing a cut-out laminate sheet of the present invention comprises: (a) preparing a laminate sheet comprising a substrate sheet and a first protective sheet disposed on one side of the substrate sheet; (b) A step of obtaining a laminate sheet having a portion protruding from its side edge by subjecting the laminate sheet to a first shearing step; and (c) a portion of the laminate sheet protruding by subjecting the laminate sheet thus obtained to a second shearing step. The step of removing the substrate sheet component in step (1) and leaving only the first protective sheet component in the protruding portion of the laminate sheet is included.

  In the step (a) of the method of the present invention, the second protective sheet may be disposed on the other side of the substrate sheet. In this case, the second protective sheet component in the protruding portion of the laminate sheet may also be removed in step (c) as a result of the second shearing step.

(A) Preparation of Laminate Sheet A laminate sheet in which the first protective sheet is disposed on one side of the substrate sheet is prepared in this step.

  In this step, the second protective sheet may be disposed on the other side of the substrate sheet.

  In this step, the step of laminating the substrate sheet and the first protective sheet (and optionally the second protective sheet) is not particularly limited.

  In one aspect, the first protective sheet (and optionally the second protective sheet) may be placed on one or both sides of the substrate sheet, and can be made using conventional methods known in the art, such as processing Lamination by using a pressure roller or the like may be used. During this step, in order to improve the adhesion of the protective sheet or sheets to the substrate sheet, an acrylic or silicone adhesive layer is applied to the first protective sheet (and optionally the second protective sheet). ) May be formed on top.

  In other embodiments, this step may be performed by spreading or depositing the raw material of the first protective sheet (and optionally the second protective sheet) onto the substrate sheet. For example, if the first protective sheet (and optionally the second protective sheet) is a polymer sheet, the polymer raw material may be coated on one or both sides of the substrate sheet and then dried. Good.

(B) Preparation of cut-out laminate sheet by shearing step The laminate sheet prepared in the previous step is subjected to a first shearing step and a second shearing step to obtain a cut-out laminated sheet.

  The first and second shearing steps can be performed by using a combined shear device set or a separate shear device set.

(B-1) First Shearing Step In this step, the laminate sheet prepared in the previous step is subjected to a shearing step to obtain a laminate sheet having a portion protruding from the side end.

  For example, the first shearing step may be performed by a punching process that includes applying a shearing force to the laminate sheet by using a pressure module having a desired shape with a protruding portion at its side edges. Good.

  When the laminate sheet undergoes a first shearing step, the substrate sheet and the first protective sheet (and optionally the second protective sheet) have protruding portions of the same shape and size at their side edges. .

  In this regard, the protruding portion of the laminate sheet may have a square, rectangular, triangular, circular or oval shape that extends outward from the side edges of the laminate sheet.

  As shown in FIG. 3A, when the first protective sheet 210 is disposed on one side of the substrate sheet 100 and the second protective sheet 220 is disposed on the opposite side of the substrate sheet 100, All three sheets have protruding portions of the same shape and size at their side edges.

(B-2) Second shearing step In this step, the substrate sheet component in the protruding portion of the laminate sheet is removed from the laminate sheet having the protruding portion on the side edge obtained in the previous first shearing step. Remove and leave only the protective sheet component in the protruding part of the laminate sheet.

  Particularly in the second shearing step, shear forces acting in opposite directions across the gap are applied in a direction normal to the surface of the laminate sheet, and the laminate sheet prepared in the previous first shearing step Applying to the boundary 15 between the body and the protruding portion, the substrate sheet component 102 at the protruding portion of the laminate sheet is cut and removed, thereby the first protective sheet at the protruding portion of the laminated sheet Only component 212 remains.

  More specifically, by pressing a pressure module having a shape that matches the protruding portion in the normal direction against the surface of the protruding portion, the pressure module protruded from the main body in the normal direction to the surface of the laminate sheet. A shearing force is applied to the boundary 15 between the parts, during which the body of the laminate sheet prepared in the previous first shearing step is fixed except for the protruding part.

  If the second protective sheet is laminated in the previous step (a), the second protective sheet component is also removed from the protruding portion in the second shearing step.

  In this case, in particular, the shearing forces acting in opposite directions across the gap are projected in a direction normal to the surface of the laminate sheet and out of the main body of the laminate sheet prepared in the previous first shearing step. Applied to the boundary 15 between the two parts, cutting and removing both the protruding part 102 of the substrate sheet and the protruding part 222 of the second protective sheet, so that it is in the protruding part of the laminate sheet Only the first protective sheet component 212 is left.

  In this step, the gap between the shearing forces applied in the normal direction to the surface of the laminate sheet is more than half of the thickness of the protective sheet and less than the total thickness of the protective sheet and the substrate sheet. Good.

  When the first protective sheet is flexible, the protruding portion 212 of the first protective sheet is used when the shearing force is applied to the boundary between the body of the laminate sheet and the protruding portion. Rather than being cut, it will be bent for a moment.

  When the laminate sheet undergoes a second shearing step, only the first protective sheet maintains the protruding portion on its side edge, whereas the substrate sheet (and optionally the second protective sheet) is on that side. It lacks a protruding part at the end.

  When the first and second protective sheets 210 and 220 are respectively disposed on each side of the substrate sheet 100 as shown in FIG. 3B, the first protective sheet is provided after the second shearing step. Only 210 keeps the part that protrudes from the side edge, whereas the second protective sheet 220 and the substrate sheet 100 lack the part that protrudes from the side edge.

Example: Preparation of a cut laminate sheet by using a combined shear device set The first and second shearing steps may be performed with the same set of shear devices. Therefore, the second shearing process is performed after the first shearing process is completed. This continuous process can be completed by using a portion of the pressure module used in the first shearing step in the second shearing step.

  An example of a manufacturing process by using a combined shear device set is illustrated in FIG. For the purpose of illustration, in FIG. 1, a first protective sheet and a second protective sheet are disposed on both sides of the substrate sheet.

  Referring to FIG. 1 (a), a laminate sheet comprising a substrate sheet 100 and a first protective sheet 210 (and optionally a second protective sheet 220) (arranged on the substrate sheet) is a combination type. Located in shear device set 300.

  The combined shear device 300 may have a pressure module having a desired shape with a protruding portion at the side edge. The pressure module having a desired shape having a protruding portion at the side end includes a first pressure module 311 having a shape matching the main body of the laminate sheet and a second pressure module having a shape matching the protruding portion. A pressure module 321 may be included. The first and second pressure modules 311 and 321 may be adjacent to each other across a gap. The gap d between the first and second pressure modules 311 and 321 is more than half of the thickness of the first protective sheet 210 and less than the total thickness of the protective sheet 210 and the substrate sheet 100. Also good.

  Furthermore, the support module may be installed on the opposite side of the laminate sheet to which the pressure is applied. The support module may include a first support module 312 and a second support module 322. The first support module 312 has the same shape as the first pressure module 311 and supports the main body of the laminate sheet before and during the first shearing step. The second support module 322 has the same shape as the second pressure module 321 and supports the protruding portion of the laminate sheet before and during the first shearing step.

  The portions of the laminate sheet that are not in contact with the first and second pressure modules 311, 321 and the first and second support modules 312, 322 are secured by upper and lower dies 351, 352. .

  Referring to FIG. 1B, the first and second pressure modules 311 and 321 move instantaneously along the normal direction with respect to the surface of the laminate sheet to apply a shearing force. The moving distance of the first and second pressure modules 311 and 321 is equal to or greater than the thickness of the laminate sheet.

  The first and second pressure modules 311 and 321 may be mechanically connected to each other and move simultaneously.

  Further, the first and second support modules 312, 322 are mechanically connected to the first and second pressure modules 311, 321 respectively, and at the same time compressive force during the first shearing process. Is thereby prevented from being applied to the laminate sheet.

  Referring to FIG. 1C, after the first shearing process is completed, the second shearing process moves only the second pressure module 321 along the normal direction with respect to the surface of the laminate sheet. In the meantime, the first pressurizing module 311 is stationary. The moving distance of the second pressure module exceeds the thickness of the laminate sheet.

  The first support module 312 continues to support the body of the laminate sheet during and after the second shearing step. However, the second support module 322 serves as a support for the protruding portion of the laminate sheet until the start of the second shearing process. When the second shearing process begins, the second support module 322 is lowered or removed, thereby cutting off the protruding portion 102 (and optionally, the substrate sheet as a result of the second shearing process). The protruding portion 222) of the second protective sheet can be easily removed.

  Cut-out laminate sheets may be prepared in an efficient manner by a continuous two-step shearing process by the process described above.

Example: Preparation of a cut-out laminate sheet by using a separate shear device set The first and second shearing steps may be performed with separate shear device sets. In other words, the first shearing step is performed with a first set of shearing dies, and the cut laminate sheet thus obtained is then transferred to a second set of shearing dies, where the second shearing Perform the process.

  An example of a manufacturing process by using a separate shear device set is shown in FIG. For the purpose of illustration, in FIG. 2, the first protective sheet and the second protective sheet are disposed on both sides of the substrate sheet.

  Referring to FIG. 2 (a), a laminate sheet including a substrate sheet 100 and a first protective sheet 210 (and optionally a second protective sheet 220) (arranged on the substrate sheet) is a first laminate sheet. In a shearing device set 400.

  The first shearing device set 400 may include a pressurizing module 411 having a desired shape having a protruding portion at a side end thereof.

  Furthermore, the support module 412 may be installed on the side opposite to the side to be pressed of the laminate sheet. The support module 412 has the same shape as the pressure module 411 and supports the body of the laminate sheet before and during the first shearing step.

  The portion of the laminate sheet that is not in contact with the pressure module 411 and the support module 412 is fixed by upper and lower dies 451 and 452.

  Referring to FIG. 2B, the pressing module 411 instantaneously moves along the normal direction with respect to the surface of the laminate sheet to perform the first shearing process. The moving distance of the pressure module 411 is equal to or greater than the thickness of the laminate sheet.

  The support module 412 may be mechanically connected to the pressure module 411 to prevent compressive force from being applied to the laminate sheet during the first shearing process.

  Referring to FIG. 2 (c), the laminate sheet is transferred to the second shearing device set 500 after the first shearing process is completed.

  The second shearing device set 500 may include a pressurizing module 511 having a protruding portion shape.

  Furthermore, the support module 512 may be installed on the surface of the laminate sheet opposite to the side to be pressed. The support module 512 has the same shape as the pressure module 511, and supports the protruding portion of the laminate sheet until the start of the second shearing process.

  The laminate sheet main body excluding the protruding portion is fixed by upper and lower dies 551 and 552 before and during the second shearing step.

  The pressure module 511 and the upper die 551 may be designed to be adjacent to each other across a gap. The gap d ′ between the pressure module 511 and the upper die 551 may be more than half of the thickness of the first protective sheet and less than the sum of the thickness of the substrate sheet and the first protective sheet. .

  Referring to FIG. 2D, the pressure module 511 is instantaneously moved along the normal direction with respect to the surface of the laminate sheet, while the main body of the laminate sheet is held by the upper and lower dies 551 and 552. And a second shearing step is performed. The moving distance of the pressure module 511 is equal to or greater than the thickness of the laminate sheet.

  When the second shearing process is initiated, the support module 512 is no longer supporting the protruding portion and has been lowered or removed, so that the protruding portion 102 (and optional) of the substrate sheet In addition, the protruding portion 222) of the second protective sheet can be easily removed.

  Cut-out laminate sheets may be prepared in an efficient manner by two simple shearing processes by the process described above.

Cut-out Laminate Sheet The cut-out laminate sheet of the present invention includes a substrate sheet and a first protective sheet, and the first protective sheet completely covers one side of the substrate sheet, and has a protruding portion at the side end. The portion extends beyond the substrate sheet.

  The cut-out laminate sheet may further include a second protective sheet disposed on the opposite side of the laminate sheet from the side on which the first protective sheet is disposed, where all side edges of the second protective sheet are present. Is the same shape as the corresponding side edge of the substrate sheet.

  After this, for illustrative purposes, the cut-out laminate sheet including the first and second protective sheets will be described with reference to FIG.

  The cut-out laminate sheet 10 includes a first protective sheet 210 disposed on one side and a second protective sheet 220 disposed on the opposite side of the substrate sheet 100. In the cut-out laminate sheet, the second protective sheet 220 has the same shape and size as the substrate sheet 100, and as such, all of its side edges are the same shape as the corresponding ends of the substrate sheet. However, the first protective sheet has a portion 212 protruding to the side edge, and the portion extends slightly beyond the substrate sheet 100 and the second protective sheet 220.

  The substrate sheet 100 and the second protective sheet 220 that do not have a protruding portion may be flat, and have a shape such as a rectangle, a square, a circle, and an ellipse.

  Further, the first protective sheet 210 includes a protruding portion 212 and a main body 211. The shape of the main body 211 may be flat, and is the same shape as that of the substrate sheet 100 and the second protective sheet 220; the protruding portion 212 may also be flat, for example, rectangular, square, circular A shape such as an ellipse, which extends from the end of the body. Further, a folding mark may be provided at a boundary 15 between the main body and the protruding portion.

  When the laminate sheet includes the first and second protective sheets, the substrate sheet may be composed of a plurality of substrate sheets. In other words, since the substrate sheet is subdivided into a plurality of sheets or has a plurality of tears therein, it may be laminated between the first and second protective sheets.

  The entire first protective sheet 210 can be easily removed from the cut-out laminate sheet 10 by holding and peeling the protruding portion 212.

  Accordingly, the cut-out laminate sheet can be effectively used in various sheet applications such as a brittle sheet and a flexible sheet.

  In particular, the method of the present invention reduces the eddy currents generated from the metal / conductive plate adjacent to the antenna and the disturbing radio waves caused by the near field communication (NFC), thereby reducing the communication distance and It can be used to prepare a magnetic sheet for ensuring reliability.

Cut sheet The present invention also provides a cut sheet obtained by removing the first protective sheet (and optionally, the second protective sheet) from the cut laminated sheet.

  With reference to FIGS. 4 and 5, the cut-out sheet 101 includes a cut end as a result of the first and second shearing steps, and more particularly, a first cut end 107 as a result of the first shearing step and It has a second cut end 109 as a result of the second shearing step.

  The first and second cut edges may not be present together at the same edge of the sheet; in other words, they may each be at a different edge.

  Otherwise, the cut sheet may have both first and second cut ends at at least one of its side edges. That is, as shown in FIG. 4, the first and second cut ends 107 and 109 may exist together at the same end of the cut sheet 101.

  In this case, a tear may be found at the boundary line 108 between the first and second cut ends. The second cut end 109 may protrude or retract as compared to the first cut end 107. The roughness of the first cut end 107 is also different from the roughness of the second cut end 109. In addition, fragments (debris) of the protective sheet (particularly, the second protective sheet) generated during the second shearing process may remain on at least a part of the second cut end 109. The cut sheet 101 may be a magnetic metal sheet or a ceramic sheet.

While preferred embodiments of the invention have been disclosed for purposes of illustration, those skilled in the art will be able to make various modifications, additions and substitutions without departing from the scope and spirit of the invention as disclosed in the appended claims. Will recognize.
Below, an embodiment is appended to this invention.
1. A method for producing a cut-out laminate sheet,
(A) preparing a laminate sheet including a substrate sheet and a first protective sheet disposed on one side of the substrate sheet;
(B) obtaining a laminate sheet having a portion protruding from the side edge by subjecting the laminate sheet to a first shearing step; and
(C) The laminate sheet thus obtained is subjected to a second shearing step to remove the substrate sheet component in the protruding portion of the laminate sheet, and the first in the protruding portion of the laminate sheet. Process to leave only protective sheet components
Including methods.
2. In the laminate sheet prepared in the first shearing process, the second shearing process applies shearing forces acting in opposite directions across a gap in a direction normal to the surface of the laminate sheet. Applying to the boundary between the body and the protruding part, cutting and removing the protruding part of the substrate sheet, thereby the first protective sheet component in the protruding part of the laminate sheet 2. The method of 1, comprising leaving only.
3. The method according to 2, wherein the gap between the shearing forces is more than half of the thickness of the protective sheet and less than the total thickness of the protective sheet and the substrate sheet.
4). When the first protective sheet is flexible and the protruding portion of the first protective sheet is applied to the boundary between the main body of the laminate sheet and the protruding portion when the shearing force is applied The method according to 2, which is bent for a moment without being cut.
5. The first shearing step is carried out by a punching process comprising applying a shearing force to the laminate sheet by using a pressure module having a desired shape having a protruding portion at its side edges; and In the second shearing step, a pressure module having a shape that matches the protruding portion is pressed in a normal direction against the surface of the protruding portion, thereby normal to the surface of the laminate sheet. In a direction, by applying a shear force to the boundary between the body of the laminate sheet and the protruding portion, while the body of the laminate sheet prepared in the first shearing step is 2. The method according to 1, wherein the portion is fixed except for a portion.
6). The first and second shearing steps are performed with the same set of shearing devices;
The pressurizing module having a desired shape having a protruding portion at the side end thereof has a first pressing module having a shape that matches the main body of the laminate sheet, and a first shape that has a shape that matches the protruding portion. Two pressure modules, wherein the first and second pressure modules are adjacent to each other across a gap,
The first shearing step is performed by momentarily moving the first and second pressure modules along a normal direction relative to a surface of the laminate sheet; and
The second shearing step is performed by moving only the second pressure module along the normal direction with respect to the surface of the laminate sheet, while the first pressure module is stationary. 6. The method according to 5.
7). A second protective sheet further disposed on the side of the laminate sheet opposite to the side on which the first protective sheet is disposed in the step (a), and in the protruding portion of the laminate sheet. 2. The method according to 1, wherein components are also removed by the second shearing step.
8). When the laminate sheet undergoes the first shearing step, all of the substrate sheet, the first protective sheet, and the second protective sheet in the laminate sheet have the same shape and size at their side edges. And after the second shearing step, only the first protective sheet maintains the protruding portion at its side edge, whereas the second protective sheet and the substrate sheet are The method according to claim 7, wherein the protruding portion is lacking at the side edges thereof.
9. A cut-out laminate sheet comprising a substrate sheet and a first protective sheet disposed on one side of the substrate sheet, wherein the first protective sheet completely covers the one side of the substrate sheet, A cut-out laminate sheet having a protruding portion at a side end, and the portion extends outward beyond the side end of the substrate sheet.
10. 10. The cutout laminate sheet according to 9, wherein a folding mark is provided at a boundary between the main body and the protruding portion in the first protective sheet.
11. The cut-out laminate sheet according to 9, wherein the substrate sheet contains a magnetic component.
12 A cut-out laminate sheet further comprising a second protective sheet disposed on the opposite side of the laminate sheet from the side on which the first protective sheet is disposed, wherein all side edges of the second protective sheet are The cut-out laminate sheet according to 9, which has the same shape as a corresponding side end of the substrate sheet.
13. The first and second protective sheets are flexible, the substrate sheet is laminated between the first and second protective sheets, and the substrate sheet is subdivided into a plurality of sheets. The cut-out laminate sheet according to 12, wherein
14 A cut sheet comprising a first cut end as a result of a first shear step and a second cut end as a result of a second shear step, prepared by a shear process.
15. 15. A cutout sheet according to 14, having both a first and a second cut end at at least one of its side edges.
16. 15. The cutout sheet according to 14, wherein the second cut end protrudes or retracts compared to the first cut end.
17. 15. The cutout sheet according to 14, wherein the roughness of the first cut end is different from the roughness of the second cut end.
18. 15. The cutout sheet according to 14, having a tear at the boundary line between the first cut end and the second cut end.
19. 15. The cutout sheet according to 14, which is a magnetic metal sheet or ceramic sheet.
20. 15. The cutout sheet according to 14, wherein at least a part of the second cut end has a piece of a protective sheet generated during the second shearing step.

Claims (6)

(B) A step of obtaining a laminate sheet having a portion protruding from a side edge by subjecting the laminate sheet to a first shearing step, and (c) a step of subjecting the laminate sheet thus obtained to a second shearing step to obtain the laminate. As a result of a first shearing step, prepared by removing the substrate sheet component in the protruding portion of the sheet and leaving only the first protective sheet component in the protruding portion of the laminate sheet. look including the second cutting edge as a result of the first cut end and the second shearing step, the second cutting edge is, the first cut end cutouts is or retracted by protrudes as compared with the sheet . The cutout sheet according to claim 1 , having both first and second cut ends at at least one of its side edges. The cutout sheet according to claim 1 , wherein the roughness of the first cut end is different from the roughness of the second cut end. The cutout sheet according to claim 1 , wherein the cut sheet has a tear at a boundary line between the first cut end and the second cut end. The cutout sheet according to claim 1 , which is a magnetic metal sheet or ceramic sheet. Wherein at least a portion of the second cutting edge, with a fragment of the protective sheet in the produced during the second shearing step, and protruding portions, cutouts sheet according to claim 1.