JP6437495B2 - Card case and book cover, method for producing them, and sheet material for making - Google Patents

Description

  The present invention relates to a card case and a book cover that are created by folding a single sheet-like material, a method for producing the card case, and a production sheet-like material used for producing the card case and book cover.

  For example, our daily lives are surrounded by a wide variety of cards, such as credit cards, bank cards, security cards, electronic money cards, membership cards issued by various stores, and examination cards issued by medical institutions. It is no exaggeration to say that the situation is such that daily life cannot be carried out. Since there is no point in holding these cards when they are needed, a card case that can be stored compactly and can be carried is an indispensable item for modern people.

  A card case is usually made of natural or artificial leather because of its high-quality appearance, durability, and good touch. However, leather is not easy to handle, and to make a card case using leather, prepare leather that has been cut into a predetermined shape and size in advance and sew it together or glue it with an adhesive. Work is necessary, and skill is required for creation. Further, leather as a material is preferable in terms of giving a high-class feeling and durability, but it is difficult to give a pattern to the leather, and is unsatisfactory in its decorativeness.

  In view of this point, various proposals have recently been made to create a card case using a synthetic resin or cloth. Synthetic resins and fabrics are easier to handle than leather and have the advantage of being relatively easy to obtain in various colors, patterns, and textures, as well as printing, Since it is relatively easy to apply your favorite decorations using embroidery, sewing, etc., this is a valuable material in that you can create your own card case that suits the tastes of individuals who are not mass-produced. . However, even when using a synthetic resin or cloth, when creating a card case, the synthetic resin or cloth is cut in advance according to a predetermined size or shape, or the cut pieces are sewn or bonded. This is basically the same as when leather is used in that it requires work and labor.

  As a card case using a material other than the above, for example, a card case created by folding a plastic sheet as shown in Patent Document 1, or a single sheet as shown in Patent Document 2 is used. The thing with the shape slit was proposed. However, none of these can be easily created independently by anyone because a plastic sheet or the like that has been processed into a special shape in advance is required.

  On the other hand, book covers are not as complex as card cases, and they are often not required to be as durable and attractive as card cases, so in addition to leather and cloth, for example, paper, etc. It is relatively easy to make using materials that are familiar to you. However, do not have a pocket to insert the front cover or back cover of the book, and simply cover the book cover that is simply folded according to the spread width of the book that covers the left and right ends of the rectangular sheet material. It has the disadvantage of being easily peeled off from the book. In order to provide a pocket portion into which a front cover or back cover of a book is inserted, for example, as shown in Patent Document 3, it is necessary to bond sheet-like materials such as leather, cardboard, and plastic by bonding or sewing together. In addition, even if a book cover is formed by folding a single sheet as shown in Patent Document 4, if a book cover having a pocket portion into which a book cover is inserted is created, an extremely complicated folding is performed. Is required.

Japanese Utility Model Publication No. 7-18629 Japanese Patent Laid-Open No. 2015-112748 JP 2010-162855 A JP 2002-178665 A

  The present invention was made in order to eliminate the disadvantages of the prior art described above, and can be easily made from materials familiar to everyone, and a card case and book cover with excellent decorativeness, It is an object of the present invention to provide a production method and, further, to provide a production sheet-like material used for the production.

  As a result of repeating diligent trial and error to solve the above-mentioned problems, the present inventor can form one or a plurality of pockets by valley-folding the lower part of one sheet-like material, and With the pockets formed, the side edge of the sheet-like material is folded back to the opposite side, and the upper half of the sheet-like material is folded back to the opposite side, and the tip is inserted into the folded portion to form a bag-like part. Then, one or more of the sheet-like material is relatively easily separated from one sheet-like material by folding back the left or right half of the sheet-like material to the opposite side and inserting the leading end into the bag-like portion. I found that I can make a card case with a pocket.

  In addition, the inventor can use the pocket formed as described above as a pocket into which a front or back cover of a book is inserted, and by limiting the number of pockets created by valley folding to one. The present inventors have found that a book cover can be created from a single sheet-like material in the same procedure as described above.

That is, the present invention is a card case made by folding a sheet-like material,
When the lower part of the sheet-like material is valley-folded along one or two or more pocket bottom valley fold lines parallel to each other, and two or more pocket bottom valley fold lines are set, In addition to folding, it is formed by mountain-folding along a pocket top mountain fold line that is parallel to the pocket bottom valley fold line and one set between two adjacent pocket bottom valley fold lines. One or more pockets,
In a state where one or two or more of the pockets are formed, the left and right side end portions of the sheet-like material, including the side end portions of the pockets, are perpendicular to the pocket bottom valley fold line. A side folded portion is provided that is folded along the side mountain fold line and folded to the opposite side,
With the one or more pockets and the side folds provided, the upper portion of the sheet-like material is mountain-folded on the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. The top portion of the sheet-like material that is folded and folded back to the opposite side and that protrudes downward from the lower end portion of the sheet-like material is an upper mountain fold line parallel to the central transverse fold line. Further, the sheet is further folded along the side, and the side folded portion located at the tip of the folded portion is inserted into a position where the side folded portion located at the lower portion of the sheet-like material is engaged with the sheet. A bag-like portion surrounded by the side folded portion is formed on either the left or right side end of the shaped material,
Further, in a state where the bag-like portion is formed, a portion of the sheet-like material opposite to the bag-like portion is mountain-folded along a central vertical mountain fold line parallel to the first side mountain fold line. The sheet-like material folded back to the opposite side, and the portion protruding sideward from the bag-like portion is parallel to the central vertical mountain fold line. Further folds along the second side fold line and inserted into the bag-like portion;
Further, in a state where the side end portion of the sheet-like material that is mountain-folded along the second side mountain fold line is inserted into the bag-like portion, the sheet-like material is What solves the said subject by providing the card | curd case by which the valley part or mountain fold is formed along a parallel lid valley fold line or a lid mountain fold line, and the cover part which covers the said 1 or 2 or more said pocket is formed. It is.

Further, the present invention is a book cover created by folding a sheet material,
A pocket formed by folding the bottom of the sheet-like material along a pocket bottom valley fold line;
In a state where the pocket is formed, a first side mountain fold line in which either one of the left and right side edges of the sheet-like material is orthogonal to the pocket bottom valley fold line, including the side edge of the pocket. A side folded portion that is folded along the mountain and folded to the opposite side,
With the pocket and the side folded portion provided, the upper portion of the sheet-like material is folded and folded back to the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. The portion of the sheet material folded back to the side and projecting downward from the lower end of the sheet material further folds along an upper mountain fold line parallel to the central transverse fold line. The side folded portion located at the tip of the mountain folded is inserted into a position where the side folded portion located at the lower portion of the sheet material is engaged, so that either the left or right side of the sheet material is A bag-like portion surrounded by the side folded portion is formed on one side end,
Further, in a state where the bag-like portion is formed, a portion of the sheet-like material opposite to the bag-like portion is mountain-folded along a central vertical mountain fold line parallel to the first side mountain fold line. The sheet-like material folded back to the opposite side, and the portion protruding sideward from the bag-like portion is parallel to the central vertical mountain fold line. Further folds along the second side fold line and inserted into the bag-like portion;
The above-described problems are solved by providing a book cover that is used by inserting a front cover or a back cover of a book into the pocket.

  Furthermore, the present invention provides a card-like material for making a card case or a book cover in which various mountain fold lines and valley fold lines necessary for producing the card case or book cover are described at predetermined positions within a square of the sheet-like material. The above-mentioned problems are solved by providing a sheet-like material. The sheet material for creating a card case or the sheet material for creating a book cover may itself be a quadrangle, in which the necessary mountain fold lines and valley fold lines are described at predetermined positions inside the card case. A rectangular section may be set inside a sheet-like material having an arbitrary shape, and a necessary mountain fold line and valley fold line may be described at a predetermined position in the rectangular section. In the latter case, when creating the card case or the book cover, a rectangular portion where the mountain fold line and the valley fold line are described is cut out from the sheet-shaped material of any shape, or the sheet-shaped material of the arbitrary shape is cut out. Unnecessary portions are folded to form a rectangular sheet-like material on which the mountain fold line and valley fold line are written, or a card case or book cover is formed by folding a predetermined mountain fold valley while leaving the portion protruding from the square. Should be created.

In addition, the present invention is a method for producing a card case by folding a sheet-like material, and solves the above-mentioned problem by providing a method for producing a card case including the following steps (A) to (G). Is;
(A) When the lower part of the sheet-like material is valley-folded along one or two or more pocket bottom valley fold lines parallel to each other, and two or more pocket bottom valley fold lines are set In addition to the valley fold, mountain folding is performed along a pocket top fold line that is parallel to the pocket bottom valley fold line and is set between two adjacent pocket bottom valley fold lines. A step of forming one or more pockets,
(B) With one or more of the pockets formed, either the left or right side edge of the sheet-like material is perpendicular to the pocket bottom valley fold line, including the side edge of the pocket. Folds along the first side fold line, and folds back to the opposite side to form the side folds,
(C) In the state in which one or more of the pockets and the side folded portion are formed, the upper part of the sheet-like material is folded up and down along the central transverse fold line parallel to the pocket bottom valley fold line. The center side fold line is folded back to the opposite side by folding the upper part of the sheet material along the center side fold line, and the tip of the sheet material is A step that is set to a position that protrudes downward from the lower end of the sheet-like material,
(D) A tip portion of the sheet-like material folded back to the opposite side, the portion protruding below the lower end portion of the sheet-like material, along an upper mountain fold line parallel to the central transverse fold line The side folded portion that is located at the tip of the folded portion is inserted into a position that engages with the side folded portion that is located at the bottom of the sheet-like material, and left and right of the sheet-like material are inserted. Forming a bag-shaped portion surrounded by the side folded portion at any one side end,
(E) Furthermore, in the state where the bag-shaped portion is formed, along the central vertical mountain fold line parallel to the first side mountain fold line, the sheet-shaped material is opposite to the bag-shaped portion. Folding the portion and folding it back to the opposite side, wherein the central vertical mountain fold line folds the portion of the sheet-like material opposite to the bag-like portion along the central vertical mountain fold line. Then, when folded back to the opposite side, the step where the side end portion of the sheet-like material folded back to the opposite side is set to a position protruding sideways from the bag-like portion,
(F) A second side mountain fold parallel to the central vertical mountain fold line is a side end portion of the sheet-like material folded back to the opposite side and protruded laterally from the bag-like portion. Further folding along the line and inserting into the bag-like part,
(G) In the state in which the side end portion of the sheet-like material that has been mountain-folded along the second side mountain fold line is inserted into the bag-like portion, Forming a lid that covers one or more of the pockets by performing valley folds or mountain folds along a lid valley fold line or a lid mountain fold line parallel to.

Furthermore, the present invention is a method of creating a book cover by folding a sheet-like material, and solves the above-mentioned problem by providing a method of creating a book cover including the following steps (a) to (f): Is
(A) forming a pocket by folding the lower part of the sheet-like material along a pocket bottom valley fold line;
(B) In the state in which the pocket is formed, the left and right side end portions of the sheet-like material, including the side end portion of the pocket, are perpendicular to the pocket bottom valley fold line. A step of folding the mountain along the mountain fold line and folding back to the opposite side to form a side folded portion;
(C) In a state in which the pocket and the side folded portion are formed, the upper portion of the sheet-like material is folded in a mountain and folded back to the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. When the central Yokoyama fold line folds the upper part of the sheet-like material along the central Yokoyama fold line and folds back to the opposite side, the leading end of the sheet-like material is the lower end of the sheet-like material The process is set to a position protruding below the part,
(D) A tip portion of the sheet-like material folded back to the opposite side, the portion protruding below the lower end portion of the sheet-like material, along the upper mountain fold line parallel to the central transverse fold line The side folded portion that is located at the tip of the folded portion is inserted into a position that engages with the side folded portion that is located at the bottom of the sheet-like material, and left and right of the sheet-like material are inserted. Forming a bag-shaped portion surrounded by the side folded portion at any one side end,
(E) Furthermore, in the state where the bag-like portion is formed, along the central vertical mountain fold line parallel to the first side mountain fold line, the sheet-like material is opposite to the bag-like portion. Folding the portion and folding it back to the opposite side, wherein the central vertical mountain fold line folds the portion of the sheet-like material opposite to the bag-like portion along the central vertical mountain fold line. Then, when folded back to the opposite side, the step where the side end portion of the sheet-like material folded back to the opposite side is set to a position protruding sideways from the bag-like portion,
(F) A second side mountain fold parallel to the central vertical mountain fold line is a side end portion of the sheet-like material folded back to the opposite side and protruded laterally from the bag-like portion. A step of further folding the mountain along the line and inserting it into the bag-like portion.

  In the present invention, the sheet-like material used for creating the card case or the book cover may be a sheet-like material composed of any material as long as it can be folded in a mountain and a valley, for example, It may be a paper such as Japanese paper or Western paper, or a cloth such as woven fabric or non-woven fabric, and may further be a synthetic resin sheet. These sheet-like materials are preferably quadrangular, and more preferably rectangular, but they are not necessarily strictly square or rectangular, and are not necessarily square or rectangular, but are distorted or irregularly shaped. It may be. When the sheet-like material to be used has a shape deviated from a square or a rectangle, a pocket bottom valley fold line or a pocket top mountain fold line is set at a position near the lower side of the sheet-like material, and the set pocket bottom valley What is necessary is just to set the other mountain fold line and valley fold line which are parallel or orthogonal to them on the basis of a fold line or a pocket top fold line.

  In addition, in order to improve the durability of the card case or book cover to be created or to prevent the adhesion of dirt, a part or all of the sheet-like material may be laminated with a thin resin film. In addition, while taking into account the completed state, characters, pictures, characters, patterns, figures, symbols, etc., in appropriate positions such as printing, sticking, sewing, embroidery, thermocompression bonding, etc. Colors, photos, etc. may be pasted to decorate. Furthermore, it is possible to improve the stability of the card case or book cover to be created by bonding the appropriate part of the sheet-like material to be folded, valley-folded, or inserted with an adhesive such as glue. You may make it prevent collapse.

  According to the card case or book cover of the present invention and the method for producing them, everyone can use the sheet material such as paper and cloth that can be obtained relatively easily, The advantage is that it can be easily created. Paper and cloth are relatively easy to process, and decorations such as photographs, pictures, characters, characters, figures, patterns, etc. are appropriately applied at appropriate locations by appropriate methods such as printing, sticking, sewing, embroidery, and thermocompression bonding. Since it can be applied, it is possible to easily create a unique card case or book cover according to the taste of the creator or user. In addition, according to the card-like material for making a card case or book cover of the present invention, necessary fold lines and valley fold lines are described in advance at predetermined positions of the sheet-like material. There is an advantage that a card case or a book cover can be easily produced simply by folding the material.

It is a figure which shows an example of the sheet-like material for card case preparation of this invention. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. A bottom view showing a state in which the upper portion of the sheet-like material is mountain-folded along the central transverse fold line and further the tip portion is mountain-folded along the upper mountain fold line, with the pocket and the side folded portion provided. It is a partial enlarged view. It is a right view which shows the state in which the bag-shaped part was formed. It is a perspective view which shows the preparation procedure of a card case. It is a front view which shows the preparation procedure of a card case. It is a front view of the completed card case. It is a rear view of the completed card case. It is a figure which shows another example of the sheet-like material for card case preparation of this invention. It is a front view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a perspective view which shows the preparation procedure of a card case. It is a figure which shows an example of the sheet-like material for book cover creation of this invention. It is a perspective view which shows the preparation procedure of a book cover. It is a perspective view which shows the preparation procedure of a book cover. It is a perspective view which shows the preparation procedure of a book cover. A bottom view showing a state in which the upper portion of the sheet-like material is mountain-folded along the central transverse fold line and further the tip portion is mountain-folded along the upper mountain fold line, with the pocket and the side folded portion provided. It is a partial enlarged view. It is a right view which shows the state in which the bag-shaped part was formed. It is a perspective view which shows the preparation procedure of a book cover. It is a front view of the completed book cover. It is the schematic which shows a mode that a book is covered using a book cover. It is a figure which shows another example of the sheet-like material for book cover creation of this invention. It is a perspective view which shows the preparation procedure of a book cover. It is a perspective view which shows the preparation procedure of a book cover. It is a perspective view which shows the preparation procedure of a book cover. It is a front view of the completed book cover. It is the schematic which shows a mode that a book is covered using a book cover.

  Hereinafter, the present invention will be described in detail with reference to the drawings, but the present invention is not limited to the illustrated one.

<Card case-1->
1A and 1B are diagrams showing an example of a sheet material for card case creation according to the present invention. FIG. 1A is a plan view and FIG. 1B is a right side view. Incidentally, the plan view of FIG. 1A is also a development view of an example of the card case of the present invention.

  In FIGS. 1A and 1B, 1 is a sheet-like material, T is the upper side, B is the lower side, R is the right side, and L is the left side. Α is the surface of the sheet-like material 1, and β is the back surface of the sheet-like material 1. In this example, the sheet-like material 1 is such that the upper side T and the lower side B, the right side R and the left side L are parallel to each other, and the lengths of the upper side T and the lower side B, and the right side R and the left side L are equal. In addition, although the left side L and the right side R are longer than the upper side T and the lower side B in a vertically long rectangular shape, the shape is not necessarily limited to the rectangular shape. The shape of the sheet-like material 1 may be a quadrangle, and the ratio of the lengths of the upper side T and the lower side B, and the right side R and the left side L is appropriately changed according to the shape of the card case to be created and the number of pockets. be able to. However, as will be described later, since the sheet-like material 1 is folded many times along the mountain fold line and the valley fold line parallel to the lower side B, the left side L and the right side R are longer than the upper side T and the lower side B. Preferably there is.

  Further, the sheet-like material 1 may have a portion that protrudes outside the quadrangle surrounded by the upper side T, the lower side B, the right side R, and the left side L. In that case, when the card case is created, , Cut along the upper side T, the lower side B, the right side R, or the left side L, or fold or valley fold along the upper side T, the lower side B, the right side R, or the left side L to square the outer shape of the sheet-like material 1 The shape may be used. Alternatively, the valley fold or the mountain fold may be executed by setting various valley fold lines and mountain fold lines described later while leaving the protruding portion as it is. The same applies to the sheet material for creating a book cover described later.

  Yb indicated by a solid line in the figure is an auxiliary mountain fold line, Ypt1 is a first pocket top mountain fold line, Ypt2 is a second pocket top mountain fold line, Ypt3 is a third pocket top mountain fold line, and Tpb1 indicated by a broken line Is the first pocket bottom valley fold line, Tpb2 is the second pocket bottom valley fold line, and Tpb3 is the third pocket bottom valley fold line. Note that these mountain fold line and valley fold line are both parallel to each other, and in this example, parallel to the lower side B of the sheet-like material 1.

  In the card case of this example, since three pockets for inserting cards are created, in addition to the first pocket bottom valley fold line Tpb1, the second pocket bottom valley fold line Tpb2 and the third pocket bottom valley fold line Tpb3 are Between the first pocket bottom valley fold line Tpb1 and the second pocket bottom valley fold line Tpb2, and between the second pocket bottom valley fold line Tpb2 and the third pocket bottom valley fold line Tpb3, respectively. The second pocket top mountain fold line Ypt2 and the third pocket top mountain fold line Ypt3 are provided. However, the number of pocket top fold lines and pocket bottom valley fold lines is not limited to that shown. For example, when the number of pockets of the card case to be created is two, the third pocket top mountain fold line Ypt3 and the third pocket bottom valley fold line Tpb3 are unnecessary, and when only one pocket is sufficient, The second pocket top mountain fold line Ypt2 and the second pocket bottom valley fold line Tpb2 are also unnecessary. When four or more pockets are created, the number of pocket top mountain fold lines and pocket bottom valley fold lines may be increased with a set of pocket top mountain fold lines and pocket bottom valley fold lines.

  In some cases, the first pocket top mountain fold line Ypt1 may not be provided, or the auxiliary mountain fold line Yb may not be provided. However, when the first pocket top mountain fold line Ypt1 is provided at a position closer to the lower side B of the sheet-like material 1 than the first pocket bottom valley fold line Tpb1, the sheet shape on the near side at least above the pocket Since the material 1 is doubled, there is an advantage that the durability of the pocket is increased, the thickness is added to the entrance of the pocket, and the appearance is improved. Further, when the auxiliary mountain fold line Yb is provided on the side closer to the lower side B than the first pocket top mountain fold line Ypt1, the sheet-like material 1 on the front side of the pocket is tripled. As a result, the durability of the pocket is further increased, and the thickness is added to the lower end on the near side of the pocket, so that the appearance is further improved. Therefore, it is preferable to provide the first pocket top fold line Ypt1, and it is also preferable to provide the auxiliary fold line Yb.

  Ys1 is a first side mountain fold line, Ys2 is a second side mountain fold line, and both are perpendicular to the first pocket bottom valley fold line Tpb1 and are parallel to each other. In this example, the sheet-like material 1 is rectangular, and the lower side B and the upper side T, and the left side R and the right side L are orthogonal to each other, so the first side mountain fold line Ys1 and the second side mountain The fold line Ys2 is parallel to the right side R or the left side L of the sheet material 1. In addition, between the lower side B and the auxiliary mountain fold line Yb, between the first pocket top mountain fold line Ypt1 and the first pocket bottom valley fold line Tpb1, and between the second pocket top mountain fold line Ypt2 and the second pocket bottom valley fold line Tpb2. The first side mountain fold line Ys1 is not provided between the first pocket fold line Ypt3 and the third pocket top fold line Ypt3 and the third pocket bottom valley fold line Tpb3. This is because it does not appear on the surface α side of the sheet-like material 1 in a state where the mountain fold is performed along the side mountain fold line Ys1. The same applies to a portion where the second side mountain fold line Ys2 is not provided. In this example, the first side mountain fold line Ys1 is provided on the right side R side of the sheet-like material 1, and the second side mountain fold line Ys2 is provided on the left side L side. It may be.

  YL is the central horizontal fold line, Yt is the upper mountain fold line, YV is the central vertical mountain fold line, and TC is the lid valley fold line. The central Yokoyama fold line YL, the upper mountain fold line Yt, and the lid valley fold line TC are parallel to the first pocket bottom valley fold line Tpb1, and are also parallel to the upper side T of the sheet-like material 1 in this example. The center vertical mountain fold line YV is orthogonal to the first pocket bottom valley fold line Tpb1, and in this example, is also parallel to the right side R or the left side L of the sheet-like material 1. The lid valley fold line TC may be a lid fold line. Also about these mountain fold line and valley fold line, the part which does not appear on the surface (alpha) side of the sheet-like material 1 when carrying out a mountain fold or a valley fold is not described.

  In the figure, L1 to L16 represent the length of each part. That is, L2 to L9 are distances between mountain fold lines or valley fold lines parallel to each other, L1 and L10 are distances between the auxiliary mountain fold line Yb or the upper mountain fold line Yt and the lower side B or the upper side T, and L11 is The distance from the third pocket bottom valley fold line Tpb3 to the lid valley fold line TC parallel to the third pocket bottom fold line Tpb3, and L12 represents the distance from the lid valley fold line TC to the central Yokoyama fold line YL parallel thereto, L11 + L12 = There is a relationship of L8. L13 to L16 are respectively the distance from the left side L of the sheet-like material 1 to the first pocket bottom valley fold line Tpb1, and in this example, the distance from the second side mountain fold line Ys2 that is also parallel to the left side L, The distance from the second side mountain fold line Ys2 to the central vertical mountain fold line YV parallel thereto, the distance from the central vertical mountain fold line YV to the first side mountain fold line Ys1 parallel thereto, and the first side mountain This represents the distance from the folding line Ys1 to the right side R.

  A distance L3 between the first pocket top mountain fold line Ypt1 and the first pocket bottom valley fold line Tpb1 corresponds to the depth of the first pocket P1 formed on the near side closest to the lower side B. Similarly, the distance L5 between the second pocket top mountain fold line Ypt2 and the second pocket bottom valley fold line Tpb2 is set to the depth of the second pocket P2 formed at the back of the first pocket P1, and the third pocket top mountain. The distance L7 between the fold line Ypt3 and the third pocket bottom valley fold line Tpb3 corresponds to the depth of the third pocket P3 formed further in the back.

  For example, a distance L3 from the first pocket top mountain fold line Ypt1 to the first pocket bottom valley fold line Tpb1, that is, the first pocket bottom fold line Tpb1 is not hidden by the pocket located on the front side. The depth of one pocket P1 is set to be shorter than the distance L4 from the first pocket bottom valley fold line Tpb1 to the second pocket top mountain fold line Ypt2 of the second pocket P2 located on the back side. Thereby, the 2nd pocket P2 is not hidden by the 1st pocket P1 located in the near side. When the first pocket top fold line Ypt1 is not set, the auxiliary mountain fold line Yb does not exist, so the distance from the lower side B of the sheet-like material 1 to the first pocket bottom valley fold line Tpb1 is the distance L3. This corresponds to the depth of the first pocket P1.

  Similarly, the distance L5 from the second pocket top mountain fold line Ypt2 to the second pocket bottom valley fold line Tpb2, that is, the depth of the second pocket P2, is located on the far side from the second pocket bottom valley fold line Tpb2. The third pocket P3 is set to be shorter than the distance L6 to the third pocket top mountain fold line Ypt3. Thereby, the 3rd pocket P3 is not hidden by the 2nd pocket P2 located in the near side.

  Conversely, if you want to hide the pocket located on the back side with the pocket located on the near side, the depth of the pocket located on the near side is located on the far side from the pocket bottom valley fold line that forms the pocket. Needless to say, it may be longer than the distance to the pocket top fold line forming the pocket. Incidentally, in this specification, the near side means the one that becomes the upper side of the sheet-like material when the surface α of the sheet-like material 1 is turned upward and the fold or valley fold is performed. On the contrary, the back side means the lower side of the sheet-like material 1 that has been folded into a mountain or a valley.

  The distance L7 from the third pocket top mountain fold line Ypt3 to the third pocket bottom valley fold line Tpb3 corresponds to the depth of the third pocket, but this depth eventually falls along the lid valley fold line TC. In order to fold and form a lid, it is set shorter than the distance L11 from the third pocket valley fold line Tpb3 to the lid valley fold line TC.

  In this example, the distances L2 and L3, the distances L4 and L5, the distances L6 and L7, and the distances L8 and L9 are set to the same length, but are not necessarily the same length. They may be different from each other. As will be described later, the upper side T of the sheet-like material 1 is mountain-folded along the central horizontal fold line YL and the upper mountain fold line Yt, and is inserted into a position where it engages with the side folds. L9 and L10 have a relationship of (L9 + L10)> L8. That is, the distance L8 from the third pocket bottom valley fold line Tpb3 to the central Yokoyama fold line YL is more than the position obtained by dividing the length from the third pocket bottom valley fold line Tpb3 to the upper side T of the sheet-like material 1 into two equal parts. The upper portion of the sheet-like material 1 is mountain-folded along the central transverse fold line YL with the first pocket P1 to the third pocket P3 being formed. Thus, when folded back to the opposite side, the leading end portion of the sheet-like material 1 is set to a position that protrudes downward from the lower end portion of the sheet-like material 1. Incidentally, as will be described later, when the sheet-like material 1 is mountain-folded or valley-folded along the pocket top mountain fold lines Ypt1 to Ypt3 and the pocket bottom valley fold lines Tpb1 to Tpb3 to form the pockets P1 to P3, the third pocket Since the valley fold line Tpb3 is located at the lower end of the folded sheet-like material 1, and the upper side T is the upper end of the sheet-like material 1, the central transverse fold line YL is defined as the pockets P1 to P3. In the state provided with the side folded portion, it is in a position closer to the lower end portion of the sheet-like material than a position obtained by dividing the length from the lower end portion of the sheet-like material 1 to the upper end portion of the sheet-like material 1 into two equal parts. become.

  Similarly, as will be described later, the left side L of the sheet-like material 1 is mountain-folded along the central vertical mountain fold line YV and the second side mountain fold line Ys2, and the right side R of the sheet-like material 1 is changed to the first side. The distances L13 to L15 are in a relationship of (L13 + L14)> L15 because they are inserted into a bag-like portion formed by mountain folding along the side mountain fold line Ys1. That is, the distance L15 from the first side mountain fold line Ys1 to the central vertical mountain fold line YV is a position obtained by dividing the length from the first side mountain fold line Ys1 to the left side L of the sheet-like material 1 into two equal parts. Is also set at a position close to the first side mountain fold line Ys1. In other words, the center vertical mountain fold line YV is the length between the left and right end portions of the sheet-like material 1 in a state where the bag-like portion is formed, that is, from the first side mountain fold line Ys1 to the left side L. Of the sheet-like material 1 along the central vertical mountain fold line YV, which is closer to the first side mountain fold line Ys1 than the position obtained by dividing the length (= L15 + L14 + L13) into two equal parts. The side end of the sheet-like material 1 folded back to the opposite side is set to a position that protrudes laterally from the bag-like portion when the portion on the opposite side is folded back and folded back to the opposite side. Become.

  A is a portion which becomes the outside of the lid when the card case is completed, and a desired decoration can be given to the portion by printing a photograph in advance.

  Next, based on FIGS. 2-14, the card case of this invention produced using the sheet-like material 1 for card case creation shown in FIG. 1 and its production method are demonstrated.

  FIG. 2 is a perspective view showing a state in which the lower part of the card case forming sheet material 1 shown in FIG. 1 is mountain-folded along the auxiliary mountain fold line Yb. As shown in the figure, a portion corresponding to the distance L1 from the lower side B is folded approximately 180 degrees along the auxiliary mountain fold line Yb, and is folded to the back surface β side of the sheet-like material 1. Thus, in this specification, the mountain fold refers to a folding method in which a crest is formed on the surface α side of the sheet-like material 1, and conversely, the valley fold refers to the surface α side of the sheet-like material 1. This is the way to fold the bottom of the valley.

  FIG. 3 shows a state in which the lower portion of the sheet-like material 1 is mountain-folded along the first pocket top mountain fold line Ypt1 from the state shown in FIG.

  In FIG. 4, the lower portion of the sheet material 1 is further folded along the first pocket bottom valley fold line Tpb1 from the state shown in FIG. 3, and the first pocket P1 is formed on the surface α side of the sheet material 1. Shows the state. A distance L3 between the first pocket top mountain fold line Ypt1 and the first pocket bottom valley fold line Tpb1 corresponds to the depth of the first pocket P1.

  FIG. 5 shows the surface α of the sheet-like material 1 from the state shown in FIG. 4 by further folding the mountain along the second pocket top mountain fold line Ypt2 and valley folding along the second pocket bottom valley fold line Tpb2. On the side, the second pocket P2 is formed after the first pocket P1. A distance L5 from the second pocket top mountain fold line Ypt2 to the second pocket bottom valley fold line Tpb2 corresponds to the depth of the second pocket P2.

  FIG. 6 shows the surface α of the sheet-like material 1 from the state shown in FIG. 5 by further folding the mountain along the third pocket top mountain fold line Ypt3 and valley folding along the third pocket bottom valley fold line Tpb3. On the side, a state in which a third pocket P3 is formed following the first pocket P1 and the second pocket P2 is shown. A distance L7 from the third pocket top mountain fold line Ypt3 to the third pocket bottom valley fold line Tpb3 corresponds to the depth of the third pocket P3.

  In the above description, the lower part of the sheet-like material 1 is fold-folded or valley-folded in order from the mountain fold line or the valley fold line located closer to the lower side B, but the order of the mountain fold or valley fold is not necessarily You do not have to fold in order from the side close to the lower side B. Regarding the auxiliary mountain fold line Yb forming the pockets P1 to P3, the first to third pocket top mountain fold lines Ypt1 to Ypt3, and the first to third pocket bottom valley fold lines Ypb1 to Ypb3, as a result, the pockets P1 to P1 P3 may be formed, and the order of folding is not limited to the order described above, and may be arbitrary.

  7, from the state shown in FIG. 6 in which the pockets P1 to P3 are formed, the right side portion of the sheet-like material 1 is mountain-folded along the first side mountain fold line Ys1, and the opposite side, that is, the back surface β side. A state is shown in which the side folded portion γ is formed by folding. Incidentally, when the first side mountain fold line Ys1 is set on the left side L side of the sheet-like material 1, the left side portion of the sheet-like material 1 is mountain-folded, and the portion folded back to the back surface β side is the side. Needless to say, the folded portion γ is obtained.

  FIG. 8 shows the state shown in FIG. 7, that is, with the pockets P1 to P3 and the side folded portions γ, the upper portion of the sheet-like material 1 is mountain-folded along the central transverse fold line YL, and the back surface β In addition to folding back to the side, a state in which the leading end portion (length L10) of the folded sheet-like material 1 is further folded along the upper mountain fold line Yt is shown. As described above, the central Yokoyama fold line YL is located at the lower end of the sheet-like material 1 with the pockets P1 to P3 and the side folds γ (in this example, the third pocket bottom valley fold line Tpb3). ) To the upper end of the sheet-like material 1, that is, a position closer to the lower end of the sheet-like material 1 than a position obtained by dividing the length from the upper side T into two, and has a relationship of (L9 + L10)> L8. Therefore, when the upper portion of the sheet-like material 1 is mountain-folded along the central horizontal fold line YL, at least a part of the front end portion of the sheet-like material 1 jumps out below the lower end portion of the sheet-like material 1. The upper mountain fold line Yt is set at a position where the protruding portion is further mountain-folded. In this example, since L8 = L9, the portion corresponding to the length of L10 is a portion protruding below the third pocket bottom valley fold line Tpb3 which is the lower end portion of the sheet-like material 1, The portion is further folded along the mountain fold line Yt.

  In this example, since L6 = L7 is set, the position of the third pocket bottom valley fold line Tpb3 is the lower end of the sheet-like material 1 with the pockets P1 to P3 and the side folded portions γ. For example, if L6> L7, the position of the second pocket bottom valley fold line Tpb2 is the lower end of the sheet-like material 1 with the pockets P1 to P3 and the side folded portions γ, Furthermore, if L4> L5, the position of the first pocket bottom valley fold line Tpb1 is the lower end portion of the sheet-like material 1 in a state where the pockets P1 to P3 and the side folded portions γ are provided.

  FIG. 9 is a bottom view of FIG. 8, partially enlarged in only two places. As shown in FIG. 9, the lower end portion of the sheet-like material 1 is composed of three valley fold lines Tpb1 to Tpb3 and four mountain fold lines Yb and Ypt1 to Ypt3. The folded portion γ is formed. In such a state, of the side folded portion γ, the side end folded portion γt located at the distal end further folded along the upper mountain fold line Yt is the side located at the lower portion of the sheet-like material 1. It is inserted into a position where it engages with the partial turn-back portion γ. In the figure, the side tip located at the tip folded back along the upper mountain fold line Yt between the auxiliary mountain fold line Yb and the first pocket bottom valley fold line Tpb1 in the folded part γ of the sheet-like material 1 The folded portion γt is inserted, and the side end folded portion γt is engaged with the side folded portion γ located at the lower part of the sheet material 1.

  The side tip folded portion γt may be inserted at any position where the side tip folded portion γt engages with the side folded portion γ located at the bottom of the sheet-like material 1. It is not restricted between the fold line Yb and the first pocket bottom valley fold line Tpb1. For example, as indicated by a thin arrow in the figure, it may be between the third pocket bottom valley fold line Tpb3 and the second pocket bottom valley fold line Tpb2 in the side fold portion γ, or the second fold portion γ in the side fold portion γ. It may be between the two pocket bottom valley fold line Tpb2 and the first pocket bottom valley fold line Tpb1, and further, the third pocket bottom valley fold line Tpb3 located in the main body of the sheet-like material 1 and the sheet shape It may be between the third pocket bottom valley fold line Tpb3 in the side folded portion γ of the material 1. However, from the viewpoint of sufficiently engaging the side tip folding portion γt with the side folding portion γ, the side tip folding portion γt is the auxiliary mountain fold line Yb and the first pocket bottom valley fold line at the folding portion γ. Most preferably, it is inserted between Tpb1.

  At this time, in order to make the engagement more reliable, one side or both sides of the side tip folded portion γt to be inserted, or the side tip folded portion γt is in contact with the side tip folded portion γt being inserted. An appropriate adhesive such as glue may be applied to the back surface β or the folded portion γ of the sheet-like material 1 to be bonded and bonded together.

  FIG. 10 shows that the side end folded portion γt is inserted between the auxiliary mountain fold line Yb and the first pocket bottom valley fold line Tpb1 in the folded portion γ, and the side folded portion positioned below the sheet-like material 1 It is a right view which shows the state engaged with (gamma). As shown in FIG. 10, on the right side portion of the sheet-like material 1, a bag-like portion δ surrounded by a folded portion γ, indicated by hatching in the figure, is formed.

  FIG. 11 shows a state in which the left side of the sheet-like material 1 is mountain-folded along the central vertical mountain fold line YV and folded back to the back β side while the bag-like portion δ is formed. A state in which the tip end (the portion of length L13) is further folded along the second side fold line Ys2 is shown. As described above, the position of the central vertical mountain fold line YV is the length between the left and right end portions of the sheet-like material 1, that is, (L13 + L14 + L15) in a state where the side folded portion γ and the bag-like portion δ are formed. Since it is set at a position closer to the first side mountain fold line Ys1 than the position divided into two equal parts and has a relationship of (L13 + L14)> L15, the left side of the sheet-like material 1 (that is, opposite to the bag-like portion δ) When the side portion) is mountain-folded along the central vertical mountain fold line YV, at least a part of the front end portion of the sheet-like material 1 that has been folded is more than the right end portion (that is, the bag-like portion δ) of the sheet-like material 1. Jump out to the side. The second side mountain fold line Ys2 is set at a position where the protruding portion is further mountain-folded. In this example, since L14 = L15, the portion corresponding to the length of L13 is a portion protruding to the right side from the bag-like portion δ which is the right end portion of the sheet-like material 1, and the second side mountain Further, the mountain is folded along the fold line Ys2, and the mountain-folded portion is inserted into the bag-like portion δ.

  At this time, in order to make the insertion state more reliable, glue or the like is applied to one or both sides of the mountain-folded tip portion to be inserted or the inner surface of the bag-like portion δ that is in contact with the mountain-folded tip portion to be inserted. An appropriate adhesive may be applied and both may be bonded in the inserted state.

  FIG. 12 is a diagram showing a state in which a mountain-folded portion along the second side mountain fold line Ys2 is inserted into the bag-like portion δ. In this state, when the upper portion of the sheet-like material 1 is valley-folded along the lid valley fold line TC, the present invention includes the lid C and the first pocket to the third pockets P1 to P3 as shown in the front view of FIG. Card case CC is completed. The card case CC of this example includes three pockets P1 to P3, and an appropriate card can be stored in each pocket and carried. Further, as shown in the rear view of FIG. 14, the card case CC of the present example has three pockets P1 to P3 on the back surface, so that an appropriate card can be stored on the back surface if necessary. Is possible.

  In FIG. 1A, the region indicated by A is the region that becomes the surface of the lid C in FIG. 13, and if the region A is appropriately decorated in advance, the surface of the lid C is decorated in the completed card case CC. Will appear. Note that the durability and aesthetics may be increased by applying a laminating process in which a thin resin film is attached to an appropriate portion including the surface of the lid C and other portions.

  In this example, the length L12 in the vertical direction of the lid C is set slightly shorter than the length L11 of the pocket portion of the card case CC, and the lid fold line TC is located at a position where L12 is slightly shorter than L11. Is set. The lid valley fold line TC may be the lid fold line YC. In this case, the lid C is folded back on the opposite side along the lid fold line YC. Since the third pockets P1 to P3 are formed, the card case CC whose front side is the other side is created.

<Card case-2->
FIGS. 15A and 15B are diagrams showing another example of the sheet material 1 for creating a card case of the present invention. FIG. 15A is a plan view and FIG. 15B is a right side view. Incidentally, the plan view of FIG. 15A is also a development view of another example of the card case of the present invention.

  In the example shown in FIG. 15, the central vertical mountain fold line YV and the side of the first side mountain fold line Ys1 relative to the central vertical mountain fold line YV, in other words, the side where the formed bag-like portion δ is located. The parallel first gusset fold line Ym1 is between the central vertical fold line YV and the first gusset fold line Ym1, and the first gusset valley fold line is parallel to the central vertical fold line YV. Tm1 is set, and a second gusset fold line Ym2 parallel to the second side fold line Ys2 is located on the side where the central vertical fold line YV is positioned with respect to the second side fold line Ys2. In addition, a second gusset valley fold line Tm2 parallel to the second side ridge fold line Ys2 is set between the second side ridge fold line Ys2 and the second gusset fold line Ym2. Is different from the example shown in FIG. The first gusset trough fold line Tm1 is at a position equidistant from both the central vertical mountain fold line YV and the first gusset trough fold line Ym1, and the second gusset trough fold line Tm2 is on the second side. It is desirable to set it at a position equidistant from both the part mountain fold line Ys2 and the second gusset part mountain fold line Ym2.

  16 uses the sheet-like material 1 shown in FIG. 15 and folds along the upper mountain fold line Yt of the sheet-like material 1 through the same steps as described above with reference to FIGS. The side tip folded portion γt positioned at the leading end is inserted into the position where the side folded portion γ positioned at the lower part of the sheet-like material 1 is engaged, and a bag-like portion δ is formed. ing. As shown in FIG. 16, the first gusset valley fold line Tm1 and the first gusset mountain fold line Ym1 are on the right side of the central vertical mountain fold line VL, and the second gusset is on the right side of the second side mountain fold line Ys2. There are a part valley fold line Tm2 and a second gusset part fold line Ym2.

  FIG. 17 shows the sheet-like material 1 from the state shown in FIG. 16, that is, the state where the bag-like portion δ is formed, along the first gusset trough fold line Tm1 and the first gusset fold fold line Ym1. A valley fold and a mountain fold, respectively, and a valley fold and a mountain fold along the second gusset fold fold line Tm1 and the second gusset fold fold line Ym1, respectively. Represents a state where the opposite side portion is folded and folded back to the opposite side, and the tip portion folded back to the opposite side is folded along the second side mountain fold line Ys2. As seen in FIG. 17, the left end of the folded sheet-like material 1 has a peak along the central vertical mountain fold line YV, the first gusset valley fold line Tm1, and the first gusset ridge line Ym1. A first gusset portion formed by folding and valley folding is formed, and on the left side of the folded second side mountain fold line Ys2 of the sheet-like material 1, a second side mountain fold line Ys2 and a second gusset portion are formed. A second gusset formed by a mountain fold and a valley fold along the valley fold line Tm2 and the second gusset fold line Ym2 is formed.

  FIG. 18 shows a state in which the leading end portion of the sheet-like material 1 that protrudes to the side of the bag-like portion δ from the state shown in FIG. 17 is inserted into the bag-like portion δ. As shown in the figure, the left and right ends of the sheet-like material 1 have a central vertical mountain fold line YV, a first gusset valley fold line Tm1, and a mountain fold along the first gusset mountain fold line Ym1, respectively. Formed by mountain folds and valley folds along the first gusset portion formed by valley folding, the second side mountain fold line Ys2, the second gusset portion valley fold line Tm2, and the second gusset portion mountain fold line Ym2. A second gusset portion is formed.

  When the upper part of the sheet-like material 1 is valley-folded along the lid valley fold line TC in this state, the lid C and the first pocket to the third pockets P1 to P3 are provided as described above with reference to FIG. The card case CC of the present invention is completed. The card case CC of this example has three pockets P1 to P3, and has a first gusset portion and a second gusset portion at the left and right ends of the card case, so that the card is stored in each pocket. And has a merit that a larger number of cards can be accommodated than the card case previously described with reference to FIGS.

<Book cover-1->
FIG. 19 is a diagram showing an example of a sheet material 10 for making a book cover according to the present invention. In FIG. 19, (a) is a plan view and (b) is a right side view. Incidentally, the plan view of FIG. 19A is also a developed view of an example of the book cover of the present invention.

  In the book cover of this example, only one pocket is required for inserting the cover of the book, so the second pocket top mountain fold line Ypt2, the second pocket bottom valley fold line Tpb2, and the third pocket top mountain fold line Ypt3. The third pocket bottom valley fold line Tpb3 is not provided. In addition, since the portion corresponding to the lid is unnecessary, the lid valley fold line TC is not provided. Except for these points, the book cover creating sheet material 10 shown in FIG. 19 is basically the same as the card case creating sheet material 1 shown in FIG. Are given the same reference numerals.

  In FIG. 19A, the sheet-like material 10 has an upper side T and a lower side B, and a right side R and a left side L that are parallel to each other, and the lengths of the upper side T and the lower side B, and the right side R and the left side L are respectively Although the left side L and the right side R are equal in length and longer than the upper side T and the lower side B, the rectangular shape is not necessarily limited to the rectangular shape. The shape of the sheet-like material 10 may be a quadrangle, and the ratio of the lengths of the upper side T and the lower side B and the right side R and the left side L can be appropriately changed according to the size and shape of the book to be covered. .

  Further, the sheet-like material 10 may have a portion protruding outside the quadrangle surrounded by the upper side T, the lower side B, the right side R, and the left side L, as in the case of the sheet-like material 1 described above. In creating the book cover, the protruding portion is cut along the upper side T, the lower side B, the right side R, or the left side L, or the mountain fold or valley fold along the upper side T, the lower side B, the right side R, or the left side L Then, the outer shape of the sheet-like material 10 may be a square shape. Alternatively, the valley fold or the mountain fold may be executed by setting various valley fold lines and mountain fold lines described later while leaving the protruding portion as it is.

  In the figure, the auxiliary mountain fold line Yb, the first pocket top mountain fold line Ypt1, the first pocket bottom valley fold line Tpb1, the central transverse mountain fold line YL, and the upper mountain fold line Yt are all parallel to each other. The side mountain fold line Ys1, the second side mountain fold line Ys2, and the central vertical mountain fold line YV are all orthogonal to the first pocket bottom valley fold line Tpb1. In this example, since the sheet-like material 10 is rectangular and the first pocket bottom valley fold line Tpb1 is set parallel to the lower side B, the first pocket bottom valley fold line Tpb1 and the first pocket bottom fold line Tpb1 are included. The pocket top fold line Ypt1, the central transverse fold line YL, and the upper mountain fold line Yt are all parallel to the lower side B or the upper side T of the sheet-like material 10, and the first side mountain fold line Ys1 and the second side. The part mountain fold line Ys2 and the central vertical mountain fold line YV are both parallel to the right side R or the left side L of the sheet material 10. Tb is an auxiliary valley fold line, which is a valley fold line when one end of the book cover is valley-folded in order to sandwich one cover of the book to be covered in a state where the book cover is formed. The auxiliary valley fold line Tb is parallel to the central Yokoyama fold line YL, and the length from the central Yokoyama fold line YL to the auxiliary valley fold line Tb corresponds to the length of the folded portion that sandwiches one cover of the book that covers it. ing.

  In some cases, the first pocket top mountain fold line Ypt1 may not be provided, and the auxiliary mountain fold line Yb may not be provided. However, when the first pocket top mountain fold line Ypt1 is provided at a position closer to the lower side B of the sheet-like material 10 than the first pocket bottom valley fold line Tpb1, the sheet shape on the near side at least above the pocket Since the material 10 is doubled, there is an advantage that the durability of the pocket is increased, the thickness is added to the entrance of the pocket, and the appearance is improved. Further, when the auxiliary mountain fold line Yb is provided on the side closer to the lower side B than the first pocket top mountain fold line Ypt1, the sheet-like material 10 on the front side of the pocket is tripled. As a result, the durability of the pocket is further increased, and the thickness is added to the lower end on the near side of the pocket, so that the appearance is further improved. Therefore, it is preferable to provide the first pocket top fold line Ypt1, and it is also preferable to provide the auxiliary fold line Yb.

  In FIG. 19, L17 to L27 represent the lengths of the respective parts. That is, L17 to L22 represent distances between mountain fold lines or valley fold lines parallel to each other, or distances between the auxiliary mountain fold line Yb or the upper mountain fold line Yt and the lower side B or the upper side T. In this example, L18 and L19 have the same length L18 = L19, and L20 and L21 have the same length, L20 = L21. As will be apparent from the description below, the length of L20 is the length obtained by adding the horizontal lengths of the front cover, the back cover, and the back cover of the book to cover one cover of the cover book. The length is selected by adding the length L27 of the folded portion.

  L23 to L26 are distances from the left side L of the sheet material 10 to the second side mountain fold line Ys2 parallel to the left side L, and distances from the second side mountain fold line Ys2 to the central vertical mountain fold line YV, respectively. The distance from the central vertical mountain fold line YV to the first side mountain fold line Ys1 and the distance from the first side mountain fold line Ys1 to the right side R are shown. In this example, L24 and L25 have the same length.

  Next, based on FIGS. 20 to 27, the book cover of the present invention created using the sheet material 10 for creating a book cover shown in FIG.

  FIG. 20 shows a fold-down of the lower part of the book cover-forming sheet-like material 10 shown in FIG. 19 along the auxiliary mountain fold line Yb and the first pocket top mountain fold line Ypt1, and further the first pocket bottom valley fold line. A state is shown in which the first pocket P1 is formed on the surface α side of the sheet-like material 10 by valley folding along Tpb1. A distance L19 between the first pocket top fold line Ypt1 and the first pocket bottom valley fold line Tpb1 corresponds to the depth of the first pocket P1.

  FIG. 21 shows a state in which the first pocket P1 is formed and the right side portion of the sheet-like material 10 is mountain-folded along the first side mountain fold line Ys1 from the state shown in FIG. A state is shown in which the side folded portion γ is formed by folding. The first side mountain fold line Ys1 may be set on the left end side of the sheet-like material 10, and when the first side mountain fold line Ys1 is set on the left side L side of the sheet-like material 10 The left side portion of the sheet-like material 10 is mountain-folded, and the portion folded back to the back surface β side becomes the side folded portion γ.

  FIG. 22 shows a state where the upper portion of the sheet-like material 10 is mountain-folded along the central transverse fold line YL in the state shown in FIG. In addition to being folded back to the side, a state is shown in which the leading end portion (length L22) of the folded sheet-like material 10 is further folded along the upper mountain fold line Yt. The position of the central Yokoyama fold line YL is such that when the upper part of the sheet-like material 10 is fold-folded along the central Yokoyama fold line YL and folded back to the opposite side, the leading end of the sheet-like material 10 is the lower end of the sheet-like material 10. It is set to a position that protrudes downward. That is, in the case of the present example, the position of the central Yokoyama fold line YL is the lower end of the sheet-like material 10 (in the case of the first pocket bottom in this example) with the first pocket P1 and the side folded portion γ formed. It is set at a position closer to the lower end of the sheet-like material 10 than a position obtained by dividing the length from the valley fold line Tpb1) to the upper end of the sheet-like material 10, that is, the upper side T, into two equal parts. Therefore, when the upper part of the sheet-like material 10 is mountain-folded along the central horizontal mountain fold line YL, at least a part of the front end portion of the sheet-like material 10 protrudes below the lower end portion of the sheet-like material 10. become. The upper mountain fold line Yt is set at a position where the protruding portion is further mountain-folded. In this example, since L20 = L21, the portion corresponding to the length of L22 is a portion that protrudes downward from the first pocket bottom valley fold line Tpb1, which is the lower end portion of the sheet-like material 10, and The portion is further folded along the mountain fold line Yt.

  FIG. 23 is a bottom view of FIG. 22 and is shown partially enlarged in only two places. As shown in FIG. 23, the lower end portion of the sheet-like material 10 is composed of one valley fold line Tpb1 and two mountain fold lines Yb and Ypt1, and the right side end portion thereof is folded back to form the side folded portion γ. It is in a formed state. In such a state, of the side folded portions γ, the side tip folded portion γt located at the tip folded further along the upper mountain fold line Yt is the side located at the lower portion of the sheet-like material 10. It is inserted into a position where it engages with the partial turn-back portion γ. In the figure, the side end folded portion γt is inserted between the first pocket bottom valley fold line Tpb1 and the auxiliary mountain fold line Yb in the side folded portion γ, and is located on the lower side of the sheet material 10. Stable engagement with the portion γ.

  The side tip folded portion γt may be inserted at any position where the side tip folded portion γt engages with the side folded portion γ located at the lower part of the sheet-like material 10. Between the first pocket bottom valley fold line Tpb1 located in the main body portion and the first pocket bottom valley fold line Tpb1 in the side folded portion γ of the sheet-like material 10. However, from the viewpoint of sufficiently and stably engaging the side tip folding portion γt with the side folding portion γ, the side tip folding portion γt is the first pocket bottom valley fold line Tpb1 in the side folding portion γ. And the auxiliary mountain fold line Yb.

  At this time, in order to make the engagement more reliable, one side or both sides of the side tip folded portion γt to be inserted, or the side tip folded portion γt is in contact with the side tip folded portion γt being inserted. An appropriate adhesive such as glue may be applied to the back surface β or the folded portion γ of the sheet-like material 10 to be bonded, and the two may be bonded together.

  FIG. 24 shows the side portion located at the lower part of the sheet-like material 10 by inserting the side end folded portion γt between the first pocket bottom valley fold line Tpb1 and the auxiliary mountain fold line Yb in the side folded portion γ. It is a right view which shows the state engaged with the folding | returning part (gamma). On the right side portion of the sheet-like material 10, a bag-like portion δ surrounded by a folded portion γ is formed as indicated by hatching in the figure.

  FIG. 25 shows a state in which the bag-like portion δ is formed, the left side of the sheet-like material 10 is mountain-folded along the central vertical mountain fold line YV, folded back to the back surface β side, and the folded sheet-like material 10 A state in which the tip portion (the portion of length L23) is further mountain-folded along the second side mountain fold line Ys2 is shown. As described above, the position of the central vertical mountain fold line YV is set so that the length between the left and right end portions of the sheet-like material 10, that is, (L23 + L24 + L25) is 2 in the state where the side folded portion γ and the bag-like portion δ are formed. A position closer to the first side mountain fold line Ys1 than the equally divided position, in other words, a part on the opposite side of the bag-like part δ of the sheet-like material 10 along the central vertical mountain fold line YV is mountain-folded. When the sheet material 10 is folded back to the opposite side, the side end portion of the sheet-like material 10 folded back to the opposite side is set to a position that protrudes laterally from the bag-like portion δ, and (L23 + L24)> L25 When the left side of the sheet-like material 10 (that is, the portion opposite to the bag-like portion δ) is mountain-folded along the central vertical mountain fold line YV, at least a part of the front end portion of the mountain-like sheet-like material 10 is a sheet. From the right end of the material 10 (ie, the bag-like portion δ) Also I will be flying out to the side. The second side mountain fold line Ys2 is set at a position where the protruding portion is further mountain-folded. In this example, since L24 = L25, the portion corresponding to the length of L23 is a portion protruding to the right side from the bag-like portion δ which is the right end portion of the sheet-like material 10, and the second side mountain Further, the mountain is folded along the fold line Ys2, and the mountain-folded portion is inserted into the bag-like portion δ.

  At this time, in order to make the insertion state more reliable, glue or the like is applied to one or both sides of the mountain-folded tip portion to be inserted or the inner surface of the bag-like portion δ that is in contact with the mountain-folded tip portion to be inserted. An appropriate adhesive may be applied and both may be bonded in the inserted state.

  FIG. 26 is a view showing a state in which a mountain folded portion along the second side mountain fold line Ys2 is inserted into the bag-like portion δ, and is a front view showing a completed state of the book cover BC of this example. . As shown in FIG. 26, a first pocket P1 into which either the front cover or the back cover of the book to be covered is inserted is formed at one end of the book cover BC. Note that Tb is an auxiliary valley fold line for sandwiching the other cover of the book to be covered, and L27 is from the end of the book cover BC opposite to the first pocket P1, that is, from the central Yokoyama fold line YL. It represents the length to the auxiliary valley fold line Tb.

  FIG. 27 is a schematic diagram showing how the book B is covered using the book cover BC shown in FIG. In order to match the direction of the book B to be covered, the direction of the book cover BC is rotated 90 degrees counterclockwise from the position shown in FIG. As shown in FIG. 27, the front end portion of the cover located on the right side of the book B is inserted into the first pocket P1, and in this state, the side opposite to the first pocket P1 of the book cover BC is auxiliary valley folded. Fold it along the line Tb and insert the tip of the back cover located on the left side of book B.

  Note that LB1, LB2, and LB3 are the horizontal lengths of the back cover, the back cover, and the cover of Book B, respectively. The length of L20 is the sum of these three lengths (LB1, LB2, LB3) and the length from the auxiliary valley fold line Tb to the end of the book cover BC opposite to the first pocket P1. The length corresponding to the length obtained by adding (L27) is selected. In the above description, in FIG. 27, the front cover on the right side of Book B is the front cover and the front cover on the left side is the back cover, but the reverse is also possible.

  As described above, the book cover creation method and book cover creation sheet-like material of the present example has the point that the number of pockets is one, and the lid valley fold line TC or the lid fold line is not set. Except for this, it is basically the same as the card case producing method and the card case producing sheet material described above. That is, a point that forms a pocket by mountain folds and valley folds, a point that side folds are provided, a top fold of the sheet-like material is folded along a central horizontal fold line, and the tip is engaged with the side folds. The book cover of this example is created in that the bag-shaped portion is formed and the side portion of the sheet-shaped material is mountain-folded along the central vertical mountain fold line and the tip portion is inserted into the bag-shaped portion. The method and the card case creation method described above are common and are basically based on the same technical idea.

<Book cover-part 2->
FIG. 28 is a view showing another example of the sheet material 10 for making a book cover according to the present invention. In FIG. 28, (a) is a plan view and (b) is a right side view. Incidentally, the plan view of FIG. 28A is also a developed view of an example of the book cover of the present invention.

  The sheet-like material 10 for making a book cover shown in FIG. 28 has a second pocket top mountain fold line Ypt2 and a second pocket bottom valley fold in place of the auxiliary valley fold line Tb on the lower side B side than the central Yokoyama fold line YL. Except for the point that the line Tpb2 is provided in parallel to the central Yokoyama folding line YL, it is the same as the sheet-like material 10 shown in FIG.

  L28 to L39 are the lengths of the respective portions. In this example, L29 and L30, L31 and L34, and L32 and L33 are set to have the same length. Note that the length L31 from the first pocket bottom valley fold line Tpb1 to the second pocket bottom valley fold line Tpb2 is a length obtained by adding the horizontal lengths of the front cover, back cover, and back cover of the book to be covered. It is chosen to become.

  The method for creating a book cover using the sheet material for creating a book cover shown in FIG. 28 is basically a method for creating a book cover using the sheet material for creating a book cover shown in FIG. Although it is the same, when a book cover is formed using the sheet-like material 10 of this example, the lower part of the sheet-like material 10 is crested along the first pocket top mountain fold line Ypt1 and the first pocket bottom valley fold line Tpb1. In addition to creating the first pocket P1 by folding and valley folding, as shown in FIG. 29, the middle of the sheet material 10 is mountain-folded along the second pocket top mountain fold line Ypt2, A second pocket P2 is created between the upper side T and the lower side B of the sheet-like material 10 by folding the valley along the two pocket bottom valley fold line Tpb2. As shown in FIG. 29, the length L30 between the first pocket top mountain fold line Ypt1 and the first pocket bottom valley fold line Tpb1 is the depth of the first pocket p1, and from the second pocket top mountain fold line Ypt2 The length L32 up to the second pocket bottom valley fold line Tpb2 is the depth of the second pocket P2.

  FIG. 30 shows a state in which the right end portion of the sheet-like material 10 is mountain-folded along the first side mountain fold line Ys1 from the state shown in FIG. 29 to form a side folded portion γ. The side folded portion γ may be formed at the left end of the sheet-like material 10 as in the card case and book cover described above.

  FIG. 31 illustrates a state in which the upper portion of the sheet-like material 10 is mountain-folded along the central horizontal fold line YL from the state shown in FIG. 30, and the portion protruding from the lower end of the sheet-like material 10 is the top mountain fold line Yt. A state is shown in which the mountain is folded along and engaged with the side folded portion γ formed earlier. In this state, on the side portion of the sheet-like material 10 where the side folded portion γ is formed, a bag-like portion δ surrounded by the side folded portion γ is formed.

  FIG. 32 is a front view of the book cover BC. From the state shown in FIG. 31, the side opposite to the side where the bag-like portion δ of the sheet-like material 10 is formed is formed along the central vertical mountain fold line YV. The book cover is formed by folding and further folding the portion protruding from the right side of the sheet-like material 10 along the second side mountain fold line Ys2 and inserting the tip into the bag-like portion δ. The state which completed BC is shown.

  FIG. 33 is a schematic diagram showing how the book B is covered using the book cover BC shown in FIG. In order to match the orientation of the book B to be covered, the orientation of the book cover BC is rotated 90 degrees counterclockwise from the position shown in FIG. As shown in FIG. 33, the front end portion of the front cover located on the right side of the book B is inserted into the first pocket P1, and the front end portion of the back cover located on the left side is inserted into the second pocket P2. . As described above, according to the book cover BC of this example, the front end portions of the front and back covers of the book B can be inserted into the pocket, so that the sense of unity between the book cover BC and the book B is increased. The advantage that BC does not easily come off is obtained. Further, as is apparent from FIG. 33, the length of L31 corresponds to the length obtained by adding LB1, LB2, and LB3, which are the lateral lengths of book B's back cover, back cover, and front cover. .

  As described above, the book cover creation method and book cover creation sheet material of this example are basically the same except that the pocket positions are different and the lid valley fold line TC or the lid mountain fold line is not set. Specifically, this is the same as the card case creation method, card case creation sheet material, book cover creation method and book cover creation sheet material described above. That is, the card case of the present invention and the method for producing the same, the book cover of the present invention and the method for producing the same include a point for forming a pocket by mountain fold and valley fold, a point for providing a side folded portion, and an upper portion of a sheet-like material. Is folded along the central horizontal fold line, and the tip part is engaged with the side folded part to form a bag-like part, and the side part of the sheet-like material is ridged along the central vertical mountain fold line. They are common to each other in that they are folded and the tip portion is inserted into the bag-like portion, and basically have a characteristic technical configuration.

  As described above, according to the card case and the card case making sheet-like material of the present invention, and further, the card case making method, paper, cloth, and synthetic resin sheet that are close and easily available to anyone. A card case can be created by a simple operation using a material such as, and it is also easy to apply an appropriate decoration to an appropriate location. The same applies to the book cover of the present invention, the sheet-like material for creating the book cover, and the book cover creating method. The present invention has excellent industrial applicability as an aid to spending everyday life with accents and more comfort and creativity.

1, 10 Sheet-like material T, B, R, L Upper side, lower side, right side, left side α, β surface of sheet-like material, back side Ypt1 to 3 First pocket top fold line Tpb1 to 3 First to third pocket bottom valley fold lines Ys1, Ys2 First and second side mountain fold lines YL Central Yokoyama fold line YV Central vertical mountain fold line Ym1, Ym2 First and second gusset fold lines Tm1, Tm2 1st and 2nd gusset part valley fold line γ side part fold part δ bag-like part CC card case BC book cover B book

Claims (17)

A card case made by folding a sheet material,
When the lower part of the sheet-like material is valley-folded along one or two or more pocket bottom valley fold lines parallel to each other, and two or more pocket bottom valley fold lines are set, In addition to folding, it is formed by mountain-folding along a pocket top mountain fold line that is parallel to the pocket bottom valley fold line and one set between two adjacent pocket bottom valley fold lines. One or more pockets,
In a state where one or two or more of the pockets are formed, the left and right side end portions of the sheet-like material, including the side end portions of the pockets, are perpendicular to the pocket bottom valley fold line. A side folded portion is provided that is folded along the side mountain fold line and folded to the opposite side,
With the one or more pockets and the side folds provided, the upper portion of the sheet-like material is mountain-folded on the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. The top portion of the sheet-like material that is folded and folded back to the opposite side and that protrudes downward from the lower end portion of the sheet-like material is an upper mountain fold line parallel to the central transverse fold line. Further, the sheet is further folded along the side, and the side folded portion located at the tip of the folded portion is inserted into a position where the side folded portion located at the lower portion of the sheet-like material is engaged with the sheet. A bag-like portion surrounded by the side folded portion is formed on either the left or right side end of the shaped material,
Further, in a state where the bag-like portion is formed, a portion of the sheet-like material opposite to the bag-like portion is mountain-folded along a central vertical mountain fold line parallel to the first side mountain fold line. The sheet-like material folded back to the opposite side, and the portion protruding sideward from the bag-like portion is parallel to the central vertical mountain fold line. Further folds along the second side fold line and inserted into the bag-like portion;
Further, in a state where the side end portion of the sheet-like material that is mountain-folded along the second side mountain fold line is inserted into the bag-like portion, the sheet-like material is A card case in which a lid is formed that is valley-folded or mountain-folded along a parallel lid valley fold line or lid mountain fold line to cover one or more of the pockets.   A pocket top mountain fold line parallel to the pocket bottom valley fold line is set at a position closer to the lower side of the sheet material than the pocket bottom valley fold line located closest to the lower side of the sheet material. The card case according to claim 1, wherein a lower end portion of the sheet-like material is mountain-folded along the pocket top mountain fold line.   Two or more pockets, and in the state where the pockets are formed, between the two pockets adjacent to the front and back, the pockets at the top of the pocket located on the near side or the lower side of the sheet-like material The distance to the pocket bottom valley fold line of the pocket is set shorter than the distance from the pocket bottom valley fold line of the pocket to the pocket top fold line of the pocket located on the back side. card case.   Furthermore, in the state which formed the said bag-shaped part, it is located in the said bag-shaped part side rather than the said center vertical mountain fold line, and the mountain fold along the 1st gusset mountain fold line parallel to the said center vertical mountain fold line And a valley fold along a first gusset valley fold line that is located between the central vertical mountain fold line and the first gusset mountain fold line and is parallel to the central vertical mountain fold line; A first gusset portion formed by mountain folds along a mountain fold line, and is positioned closer to the central vertical mountain fold line side than the second side mountain fold line and is parallel to the second side mountain fold line A mountain fold along the second gusset fold line and a second fold line located between the second flank fold line and the second gusset fold line and parallel to the second flank fold line. A second gusset formed by a valley fold along a two gusset valley fold line, and a mountain fold along the second side mountain fold line, and the first gusset and the The side edge part of the said sheet-like material in the state in which 2 gusset parts were formed, Comprising: The part which protruded side rather than the said bag-like part is inserted in the said bag-like part. A card case according to any of the above.   One or more pocket bottom valley fold lines, and when there are two or more pocket bottom valley fold lines, at least one pocket top mountain fold line, first side mountain fold line, central Yokoyama The fold line, the upper mountain fold line, the central vertical mountain fold line, the second side mountain fold line, and the lid valley fold line or the lid mountain fold line are described at predetermined positions inside the rectangle. The sheet material for card case preparation according to claim 1. A method for producing a card case by folding a sheet-like material, comprising the following steps (A) to (G):
(A) When the lower part of the sheet-like material is valley-folded along one or two or more pocket bottom valley fold lines parallel to each other, and two or more pocket bottom valley fold lines are set In addition to the valley fold, mountain folding is performed along a pocket top fold line that is parallel to the pocket bottom valley fold line and is set between two adjacent pocket bottom valley fold lines. A step of forming one or more pockets,
(B) With one or more of the pockets formed, either the left or right side edge of the sheet-like material is perpendicular to the pocket bottom valley fold line, including the side edge of the pocket. Folds along the first side fold line, and folds back to the opposite side to form the side folds,
(C) In the state in which one or more of the pockets and the side folded portion are formed, the upper part of the sheet-like material is folded up and down along the central transverse fold line parallel to the pocket bottom valley fold line. The center side fold line is folded back to the opposite side by folding the upper part of the sheet material along the center side fold line, and the tip of the sheet material is A step that is set to a position that protrudes downward from the lower end of the sheet-like material,
(D) A tip portion of the sheet-like material folded back to the opposite side, the portion protruding below the lower end portion of the sheet-like material, along an upper mountain fold line parallel to the central transverse fold line The side folded portion that is located at the tip of the folded portion is inserted into a position that engages with the side folded portion that is located at the bottom of the sheet-like material, and left and right of the sheet-like material are inserted. Forming a bag-shaped portion surrounded by the side folded portion at any one side end,
(E) Furthermore, in the state where the bag-shaped portion is formed, along the central vertical mountain fold line parallel to the first side mountain fold line, the sheet-shaped material is opposite to the bag-shaped portion. Folding the portion and folding it back to the opposite side, wherein the central vertical mountain fold line folds the portion of the sheet-like material opposite to the bag-like portion along the central vertical mountain fold line. Then, when folded back to the opposite side, the step where the side end portion of the sheet-like material folded back to the opposite side is set to a position protruding sideways from the bag-like portion,
(F) A second side mountain fold parallel to the central vertical mountain fold line is a side end portion of the sheet-like material folded back to the opposite side and protruded laterally from the bag-like portion. Further folding along the line and inserting into the bag-like part,
(G) In the state in which the side end portion of the sheet-like material that has been mountain-folded along the second side mountain fold line is inserted into the bag-like portion, Forming a lid that covers one or more of the pockets by performing valley folds or mountain folds along a lid valley fold line or a lid mountain fold line parallel to. Furthermore, the creation method of the card case of Claim 6 including the following process (H);
(H) at a position close to the lower side of further said sheet-like material than said pocket bottom valley fold line located closest to the lower edge of the sheet material, said pocket bottom valley fold lines and parallel to the pocket top convex fold And folds the lower end portion of the sheet-like material along the pocket top fold line.   In the step (A), two or more pocket bottom valley fold lines are set, and a pocket top mountain parallel to the pocket bottom valley fold line is set between two adjacent pocket bottom valley fold lines. A fold line is set for each pocket, and when the pocket is formed, between the two pockets adjacent to the front and back, the pocket top fold line of the pocket located on the near side or the lower side of the sheet-like material The pocket bottom valley so that the distance from the pocket bottom valley fold line to the pocket is shorter than the distance from the pocket bottom valley fold line of the pocket to the pocket top mountain fold line of the pocket located on the back side. The method for creating a card case according to claim 6 or 7, wherein the positions of the fold line and the pocket top fold line are set. Furthermore, the manufacturing method of the card case in any one of Claims 6-8 including the following process (I) and (J) between the said process (D) and (E);
(I) In the state in which the bag-shaped portion is formed, the first gusset mountain fold line that is located on the bag-shaped portion side of the central vertical mountain fold line and is parallel to the central vertical mountain fold line; Mountain folds and valley folds are located along a first gusset valley fold line that is located between the central vertical mountain fold line and the first gusset mountain fold line and is parallel to the central vertical mountain fold line, respectively. Process,
(J) A second gusset portion that is positioned closer to the central vertical mountain fold line than the second side mountain fold line and is parallel to the second side mountain fold line in a state where the bag-like portion is formed. Along the mountain fold line and a second gusset valley fold line located between the second side mountain fold line and the second gusset mountain fold line and parallel to the second side mountain fold line Steps for mountain fold and valley fold, respectively. A book cover made by folding sheet-like material,
A pocket formed by valley-folding the lower portion of the sheet-like material along a pocket bottom valley fold line;
In a state where the pocket is formed, a first side mountain fold line in which either one of the left and right side edges of the sheet-like material is orthogonal to the pocket bottom valley fold line, including the side edge of the pocket. A side folded portion that is folded along the mountain and folded to the opposite side,
With the pocket and the side folded portion provided, the upper portion of the sheet-like material is folded and folded back to the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. The portion of the sheet material folded back to the side and projecting downward from the lower end of the sheet material further folds along an upper mountain fold line parallel to the central transverse fold line. The side folded portion located at the tip of the mountain folded is inserted into a position where the side folded portion located at the lower portion of the sheet material is engaged, so that either the left or right side of the sheet material is A bag-like portion surrounded by the side folded portion is formed on one side end,
Further, in a state where the bag-like portion is formed, a portion of the sheet-like material opposite to the bag-like portion is mountain-folded along a central vertical mountain fold line parallel to the first side mountain fold line. The sheet-like material folded back to the opposite side, and the portion protruding sideward from the bag-like portion is parallel to the central vertical mountain fold line. Further folds along the second side fold line and inserted into the bag-like portion;
A book cover used by inserting the front or back cover of a book into the pocket.   A pocket top fold line parallel to the pocket bottom valley fold line is set at a position closer to the lower side of the sheet material than the pocket bottom valley fold line, and the lower end of the sheet material is the pocket The book cover according to claim 10, wherein the book cover is folded along a top mountain fold line. Furthermore, it is in a position separated by a length obtained by adding the horizontal length of the front cover, back cover, and back cover of the book that is supposed to cover from the pocket bottom valley fold line, and the pocket bottom valley fold line and Valley folds along the parallel second pocket bottom valley fold line, parallel to the second pocket bottom valley fold line, and positioned opposite to the pocket bottom valley fold line across the second pocket bottom valley fold line A second pocket formed by a mountain fold along a second pocket top fold line,
In the state in which the side folded portion is formed with the pocket and the second pocket, either the left or right side end of the sheet-like material includes the side end of the pocket and the second pocket. , A side folded portion that is folded along the first side mountain fold line orthogonal to the pocket bottom valley fold line and folded back to the opposite side,
The central Yokoyama fold line is in a position closer to the upper side of the sheet-like material than the second pocket bottom valley fold line in the state where the pocket and the second pocket are formed,
The book cover according to claim 10 or 11, wherein the book cover is used by inserting a front cover or a back cover of the book into the pocket and the second pocket, respectively.   The pocket bottom valley fold line, the first side mountain fold line, the central lateral mountain fold line, the upper mountain fold line, the central vertical mountain fold line, and the second side mountain fold line are inside the quadrangle. The sheet-like material for making a book cover according to claim 10, which is described at a predetermined position.   The pocket bottom valley fold line, the second pocket bottom valley fold line, the second pocket top mountain fold line, the first side mountain fold line, the central transverse fold line, the upper mountain fold line, the central vertical mountain The sheet-like material for creating a book cover according to claim 12, wherein the fold line and the second side mountain fold line are described at predetermined positions inside the quadrangle. A method for creating a book cover by folding a sheet-like material, comprising the following steps (a) to (f):
(A) forming a pocket by valley-folding the lower part of the sheet-like material along a pocket bottom valley fold line;
(B) In the state in which the pocket is formed, the left and right side end portions of the sheet-like material, including the side end portion of the pocket, are perpendicular to the pocket bottom valley fold line. A step of folding the mountain along the mountain fold line and folding back to the opposite side to form a side folded portion;
(C) In a state in which the pocket and the side folded portion are formed, the upper portion of the sheet-like material is folded in a mountain and folded back to the opposite side along a central transverse fold line parallel to the pocket bottom valley fold line. When the central Yokoyama fold line folds the upper part of the sheet-like material along the central Yokoyama fold line and folds back to the opposite side, the leading end of the sheet-like material is the lower end of the sheet-like material The process is set to a position protruding below the part,
(D) A tip portion of the sheet-like material folded back to the opposite side, the portion protruding below the lower end portion of the sheet-like material, along the upper mountain fold line parallel to the central transverse fold line The side folded portion that is located at the tip of the folded portion is inserted into a position that engages with the side folded portion that is located at the bottom of the sheet-like material, and left and right of the sheet-like material are inserted. Forming a bag-shaped portion surrounded by the side folded portion at any one side end,
(E) Furthermore, in the state where the bag-like portion is formed, along the central vertical mountain fold line parallel to the first side mountain fold line, the sheet-like material is opposite to the bag-like portion. Folding the portion and folding it back to the opposite side, wherein the central vertical mountain fold line folds the portion of the sheet-like material opposite to the bag-like portion along the central vertical mountain fold line. Then, when folded back to the opposite side, the step where the side end portion of the sheet-like material folded back to the opposite side is set to a position protruding sideways from the bag-like portion,
(F) A second side mountain fold parallel to the central vertical mountain fold line is a side end portion of the sheet-like material folded back to the opposite side and protruded laterally from the bag-like portion. A step of further folding the mountain along the line and inserting it into the bag-like portion. Furthermore, the production method of the book cover of Claim 15 including the following process (g);
(G) in a position close to the lower side of the further the sheet material than the pocket bottom valley fold lines, to set the pocket bottom valley fold lines and parallel to the pocket top convex fold, the lower end portion of the sheet material A step of mountain-folding along the pocket top fold line; Furthermore, between the step (a) and the step (b),
(H) The sheet-like material is at a position separated by a length obtained by adding the lateral lengths of the front cover, back cover, and back cover of the book that is supposed to cover the pocket bottom valley fold line, The pocket bottom folds along a second pocket bottom valley fold line parallel to the pocket bottom valley fold line, and is parallel to the second pocket bottom valley fold line and sandwiches the second pocket bottom valley fold line. Forming a second pocket by a mountain fold along a second pocket top mountain fold line located opposite the valley fold line;
Have
In the state where the side folded portion formed in the step (b) is formed with the pocket and the second pocket, either the left or right side end of the sheet-like material is formed with the pocket and the second pocket. Including side end portions of two pockets, a side folded portion folded in a mountain-folded manner along the first side mountain fold line perpendicular to the pocket bottom valley fold line, and folded back to the opposite side;
The central Yokoyama fold line in the step (c) is closer to the upper side of the sheet-like material than the second pocket bottom valley fold line in the state including the pocket, the second pocket, and the side fold line. The central Yokoyama fold line at the position,
The book cover creation method according to claim 15 or 16.

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