JP2014100159A - Production condition header for bag, and production method of bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag utilizing a drawing pattern printed on a newspaper.SOLUTION: A header 30 includes a condition identifier 90. The condition identifier 90 shows a folding condition of a newspaper, when a bag body 10 is made of a newspaper. The condition identifier 90 shows the folding condition of the newspaper in a production method of the bag body. As the condition identifier 90, for example, a size identifier showing the size of a newspaper before being folded or a number identifier showing the piling number of newspapers are enumerated.

Description

  The present invention relates to a bag manufacturing condition heading and a bag manufacturing method.

  From the viewpoint of environmental protection and environmental protection in recent years, recycling of newspapers has been studied in various ways. For example, window glass cleaning tools and edible oil absorbents are known for use in old newspapers (Non-Patent Document 1). These old newspapers can be said to use the properties of paper and ink used in old newspapers.

http://money.goo.ne.jp/setsuyaku/nichiyouhin/003.html

  By the way, with the recent development of printing technology, photographs and advertisements with vivid colors have been posted on newspapers. However, there are no known uses of such old newspapers that utilize such brightly colored designs.

  In view of such circumstances, the present invention seeks to provide a manufacturing condition heading for a bag and a method for manufacturing a bag.

  The container manufacturing condition heading includes a condition identifier indicating the manufacturing condition of the container when a container is manufactured by folding a sheet of newspaper.

  When the condition identifier includes a plurality of identifiers representing the setting positions of the folds of the sheet, the identifiers are preferably arranged in the order in which the folds are provided on the sheet. Moreover, it is preferable to provide a newspaper identifier for specifying the newspaper.

  The condition identifier preferably includes a size identifier representing a size of a sheet created from the newspaper. Further, it is preferable that the condition identifier has a sheet number identifier indicating the number of sheets of the newspaper on the sheet. Further, when the step of folding a newspaper having a size larger than that of the sheet and defining the step of forming the sheet is defined as a sheet forming step, the condition identifier is a sheet forming condition identifier indicating the amount of folding of the edge of the newspaper in the sheet forming step. It is preferable to have.

  The step of forming the opening fold of the container on the sheet is performed before the formation of the container, and the step of folding the opening of the container on the basis of the fold for opening And the condition identifier preferably has an opening crease identifier that represents a setting position of the opening fold.

  A step of forming the cylinder from the sheet by connecting both ends of the sheet, a cylinder forming step, and a step of forming the container in which one end of the cylinder is folded and the folded one end forms the bottom, and a bottom forming step, respectively When defined, the bottom forming step includes a flattening step of flattening the tube with reference to two axial folds parallel to the axial direction of the tube, and a bottom of the container among the flattened tubes A corner crease forming step in which corner creases are formed at both corners of the side portion, and a bottom precursor forming step in which one end side of the cylinder is opened with reference to the corner crease and the paired bottom precursor is formed. And a closing step of turning back the bottom precursor so as to close the opening on the one end side, and the condition identifier preferably includes a corner fold identifier indicating a set position of the corner fold.

  The bottom forming step is performed after the flattening step and before the bottom precursor forming step, and forms an intersection fold that intersects the axial fold on one end side of the flattened cylinder. Preferably, the method further includes a crease forming step, and the condition identifier includes a cross crease identifier representing a set position of the cross crease.

  The condition identifier preferably includes a bottom folding position identifier representing a folding position of the bottom precursor in the closing step.

  When defining the step of folding the cylinder so that two gusset forming folds that form the gusset portion of the container are formed in the cylinder as a pair,

  It is preferable to provide a gusset-shaped identifier indicating that the interval between the two gusset forming folds, which is the width of the gusset portion, is narrower than the width of the bottom of the container determined by the folding position of the precursor at the bottom. .

  Connecting the both ends of the sheet and forming a cylinder from the sheet is a cylinder forming step, and two gusset forming folds that form a gusset portion of the container are paired to form the cylinder. When the folding step is defined as a gusset forming step, it is preferable that the condition identifier includes a gusset forming fold identifier indicating a forming position of the gusset forming fold.

  A container manufacturing method includes: a cylinder forming step for forming a cylinder by connecting both ends of a newspaper sheet; and a flattening step for flattening the cylinder based on two axial folds parallel to the axial direction of the cylinder; A bottom forming step for forming a container in which one end of the tube is folded and the folded one end forms a bottom; and after the bottom forming step, the two shaft folds are performed. A gusset forming step in which a gusset forming fold forming a gusset portion of the container is formed between the two shaft folds, and the bottom forming step opens one end side of the cylinder, It comprises a bottom precursor forming step for forming the paired bottom precursor, and a closing step for folding back the bottom precursor so as to close the opening on the one end side.

  It is preferable to further include a guide crease forming step of forming a guide fold extending on the bottom line on the same straight line as the two shaft folds. The guide crease forming step is preferably performed simultaneously with the gusset forming step.

  In the closing step, it is preferable that the guide fold line does not intersect the bottom fold line when a line at which the bottom precursor is folded is defined as a bottom fold line.

  A container manufacturing method includes: a sheet forming step for forming a sheet by stacking a plurality of newspapers; a cylinder forming step for forming a cylinder by connecting both ends of the sheet; and a folded one end of the cylinder and the folded one end Forming a bottom container, and in the sheet forming step, a portion to be an opening of the container is folded back.

  According to the present invention, a bag using a pattern printed on newspaper can be easily produced.

It is a perspective view which shows the outline | summary of a bag. It is a side view which shows the outline | summary of a bag. It is a flowchart which shows the outline | summary of the manufacturing method of a bag. It is a flowchart which shows the outline | summary of the manufacturing method of a bag. It is explanatory drawing which shows the outline | summary of the newspaper for front and the newspaper for reinforcement. It is explanatory drawing which shows a mode that the front newsprint and the newsprint for reinforcement are piled up and the bunch 83 of newsprint is made. It is explanatory drawing which shows the outline | summary of the newsprint for front and the newsprint for reinforcement folded by the X direction fold line and the Y direction fold line. It is explanatory drawing which shows a mode that the front newspaper and the bundle of newspaper for reinforcement are integrated. It is explanatory drawing which shows a mode that the front newspaper and the bundle of newspaper for reinforcement are integrated. It is explanatory drawing which shows the outline | summary of an opening crease formation step. It is explanatory drawing which shows the outline | summary of a cylinder formation step. It is explanatory drawing which shows the outline | summary of a cylinder formation step. It is explanatory drawing which shows the outline | summary of the planarization step. It is explanatory drawing which shows the outline | summary of a corner crease formation step. It is explanatory drawing which shows the outline | summary of a guide crease formation step. It is a top view of a pipe | tube at the time of returning the part folded in the guide crease formation step. It is a top view of the cylinder which shows the outline of a corner fold and a guide fold. It is explanatory drawing which shows the outline | summary of a bottom precursor formation step. It is explanatory drawing which shows the outline | summary of a bottom precursor formation step. It is explanatory drawing which shows the outline | summary of the obstruction | occlusion step. It is explanatory drawing which shows the outline | summary of a gusset formation step. It is explanatory drawing which shows the outline | summary of a gusset formation step. It is explanatory drawing which shows the outline | summary of a gusset formation step. It is a perspective view which shows the outline | summary of a bag. It is a perspective view which shows the outline | summary of a bag. It is a perspective view which shows the outline | summary of a bag. It is explanatory drawing which shows the outline | summary of the manufacturing method of a handle. It is explanatory drawing which shows the outline | summary of the manufacturing method of a handle. It is explanatory drawing which shows the outline | summary of a heading.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in FIGS. 1A to 1B, the bag 2 includes a bag body 10 and a handle 20 attached to the bag body 10. Both the bag body 10 and the handle 20 are made of newspaper. The bag 2 is suitable for shopping bags, eco bags, packaging bags for fruits and vegetables, and the like.

  The bag body 10 has a rectangular opening 10X. The height H of the bag body 10 and the aspect ratio (Lm1: Ln1) of the opening 10X are predetermined. A predetermined pattern 12 is located on the front surface of the bag body 10. Further, the vertical length Lm2 of the bottom 10B of the bag body 10 is narrower than the vertical length Lm1 of the opening 10X, and the horizontal length Ln2 of the bottom 10B of the bag body 10 is longer than the horizontal length Ln1 of the opening 10X. wide.

  The gusset 10M of the bag body 10 has a rectangular upper gusset portion 10MU and a trapezoidal lower gusset portion 10ML. The upper gusset portion 10MU extends from the opening 10X toward the bottom 10B, and the lateral length is constant as Ln1 from the opening 10X toward the bottom 10B. The lower gusset portion 10ML extends from the bottom 10B toward the opening 10X, and the lateral length decreases from Ln2 to Ln1 from the bottom 10B toward the opening 10X. In the bag 2 having the gusset 10M having such a shape, the shape of the opening 10X is different from the shape of the bottom 10B. Here, in order to give a sense of stability of the bag 2 itself, it is preferable that the aspect ratio of the bottom 10B is close to 1. On the other hand, when the aspect ratio of the opening 10X moves away from 1, a sheet-like object such as a book or a notebook can be accommodated. Further, by keeping the vertical / horizontal ratio of the opening 10X away from 1, the length of the diagonal line connecting the bottom 10B and the opening 10X becomes longer. For this reason, long objects, such as vegetables, can also be accommodated. Further, the opening area of the opening 10X is reduced by keeping the aspect ratio of the opening 10X away from 1. As a result, things stored in the bag body 10 are less likely to spill. In particular, in the bag 2 made of a material having low rigidity such as newspaper, the spillage of the contents can be reliably suppressed by keeping the aspect ratio of the opening 10X away from 1.

  The bag 2 is provided with a heading 30. In the heading 30, an identifier representing the manufacturing condition of the bag 2 is attached. This identifier will be described later.

  Next, a method for manufacturing the bag body 10 will be described. As shown in FIG. 2A, the bag body manufacturing method 100 includes a sheet forming step 110, a tube forming step 120, a flattening step 130, a bottom forming step 140, and a gusset forming step 150.

  In the sheet forming step 110, the newspaper used as the base paper 61 is folded to obtain a sheet 62 having a size suitable for manufacturing the bag body 10. In the cylinder forming step 120, both ends of the sheet 62 are connected to form a cylinder 63 having open ends on both sides. In the flattening step 130, the cylinder 63 is folded with reference to two fold lines extending in the axial direction of the cylinder 63, and the cylinder 63 is flattened. In the bottom forming step 140, one open end of the cylinder 63 that has undergone the flattening step 130 is folded back, and the one open end is closed by the folded portion. By folding the cylinder 63 in this manner, the bag body 10 having a bottom is formed. In the gusset forming step 150, a fold for forming the gusset 10M is provided in the bag body 10.

  In addition, when the dimension of the newspaper used as the base paper 61 is a dimension suitable for manufacturing the bag body 10, the sheet forming step 110 may be omitted. In this case, the newspaper used as the base paper 61 becomes the sheet 62.

  The bag body manufacturing method 100 may further include an opening fold forming step 115 and an opening folding step 160 (see FIG. 2B). The opening folding step 160 is performed after the gusset forming step 150. When the gusset forming step 150 is omitted, the opening folding step 160 is performed after the bottom forming step 140. In the opening folding step 160, in order to increase the thickness of the other opening edge peripheral edge of the bag body 10, the opening peripheral edge is folded at the opening fold 62A with reference to the opening fold 62A provided in advance. In the opening fold forming step 115, the opening fold 62A serving as a reference in the opening folding step 160 is formed.

  Next, details of each step will be described.

  In the sheet forming step 110 (see FIG. 2B), a sheet 62 is formed using the front newspaper 81 and the reinforcing newspaper 82 as the base paper 61 (see FIGS. 3A to 3E). Hereinafter, the case of using front newspaper 81 (one sheet) and reinforcing newspaper 82 (four sheets) will be described.

  First, the front newspaper 81 and the reinforcing newspaper 82 are overlapped to form a newspaper bundle 83 (see FIG. 3B). Hereinafter, for convenience of explanation, the horizontal direction of the newspapers 81 to 83 is referred to as the X direction, and the vertical direction is referred to as the Y direction. Next, an X-direction fold line 83AX and a Y-direction fold line 83AY are provided in the newspaper bundle 83. Here, the length of the newspaper bundle 83 in the X direction can be reduced by folding the edges of the newspaper bundle 83 with reference to the X-direction folding line 83AX. Further, the length of the newspaper bundle 83 in the Y direction can be shortened by folding the edges of the newspaper bundle 83 with reference to the Y-direction folding line 83AY. For example, the X-direction folding line 83AX is provided at a position that is 1/8 of the X-direction length of the entire newspaper, and the Y-direction folding line 83AY is provided at a position that is 1/6 of the Y-direction length of the entire newspaper.

  The position where the X-direction fold line 83AX is provided is preferably on the bottom 10B (see FIG. 1A) side of the bag body 10. By folding the bag body 10 with reference to the X-direction fold line 83AX provided on the bottom 10B side of the bag body 10, the strength on the bottom 10B side of the bag body 10 can be improved.

  Moreover, you may provide the X direction folding line 83AX also in the opening 10X (refer FIG. 1A) side of the bag main body 10. FIG. By folding the bag body 10 with reference to the X-direction fold line 83AX provided on the opening 10X side of the bag body 10, the strength of the bag body 10 on the opening 10X side can be improved. By improving the strength on the opening 10X side, sufficient strength as the bag body 10 can be obtained without providing the gusset forming fold 63Y and the corner fold 63R as the ridgeline of the bag body 10. As a result, the bag body 10 having the rounded gusset 10M can be produced.

  Thereafter, the newspaper bundle 83 is divided into front newspaper 81 and reinforcing newspaper 82. Next, the reinforcing newspapers 82 are stacked to make a bundle 84 of reinforcing newspapers (see FIG. 3C). When the reinforcing newspaper bundle 84 is formed, the sheets are stacked so that the positions and directions of the X-direction fold line 83AX and the Y-direction fold line 83AY coincide. Then, the front newspaper 81 is folded based on the X-direction fold line 83AX and the Y-direction fold line 83AY. Similarly, the bundle of reinforcing newspapers 84 is folded at the X-direction fold line 83AX and the Y-direction fold line 83AY.

  Next, the front newspaper 81 and the bundle of reinforcing newspaper 84 are integrated (see FIG. 3D). First, the folded portion 81X formed on the front newspaper 81 by folding the X-direction folding line 83AX and the folded portion 84Y formed on the bundle of reinforcing newspapers 84Y by folding the Y-direction folding line 83AY are locked. . Similarly, the folded portion 81Y formed on the front newspaper 81 by folding the Y-direction folding line 83AY and the folded portion 84X formed on the reinforcing newspaper bundle 84 by folding the X-direction folding line 83AX are locked. To do. And the said latched part is bonded together using adhesives, such as a bond. Thus, the front newspaper 81 and the bundle of reinforcing newspaper 83 are integrated to obtain a sheet 62 (see FIG. 2B). The sheet 62 thus obtained is provided with bag portions 62XA and 62XB at both ends in the X direction. The bag portion 62XA is formed by the folded portion 81X and the bundle of reinforcing newspaper 84, and the bag portion 62XB is formed by the folded portion 84X and the front newspaper 81 (see FIGS. 3D to 3E). Each of the bag portions 62XA and 62XB has one of the ends in the Y direction closed and the other open.

  It should be noted that if necessary, a back newspaper used as the lining of the bag body 10 may be used in combination, or depending on the application, the reinforcing newspaper may be omitted and only the front newspaper 81 may be used. In addition, as the newspaper for the back that becomes the lining of the bag body 10, a newspaper printed with a pattern may be used. In this case, different patterns can be arranged between the opening portion of the bag body 10 and the front surface portion of the bag body 10 by making the opening fold 62A when the cylinder 63 is formed into a valley fold.

  In the opening crease forming step 115 (see FIG. 2B), as shown in FIG. 4, one end side of the sheet 62 in the Y direction is folded toward the other end side. The folding width (for one time) at this time is 1/8 of the length of the entire sheet 62 in the Y direction, and the number of folding times is two. In this way, two opening folds 62A are formed in the sheet 62. Here, “one end side of the sheet 62 in the Y direction” corresponds to the opening 10X (see FIG. 1A) side of the bag body 10.

  In the cylinder forming step 120 (see FIG. 2B), one end side in the X direction of the sheet 62 (for example, the bag portion 62XA) is folded to form a connecting margin 62TS (see FIG. 5A), and the X of the sheet 62 Both ends connecting step (see FIG. 5B) for inserting the connecting margin 62TS into the bag portion 62XB located on the other end side in the direction and connecting both ends of the sheet 62 in the Y direction.

  In the cylinder forming step 120, when a pattern (newspaper frame line or the like) that is not suitable for the pattern of the bag body 10 is positioned at the end in the X direction of the sheet 62, the pattern is hidden so that the pattern is hidden. It is preferable to connect both ends of the direction. For example, when the frame lines are positioned on the newspaper 81 on the bag portion 62XA side and the newspaper for reinforcement on the bag portion 62XB side, the following may be performed. First, in the connection allowance forming step, the bag portion 62XA side of the sheet 62 is folded back so that the frame line of the newspaper 81 is on the valley fold side to form the connection allowance 62TS. Thereafter, in the both-end connection step, the bag portion 62XB side of the reinforcing newsprint is inserted into the bag portion of the connection allowance 62TS, that is, the bag portion 62XA. Further, in the both end connecting step, the bag portions 62XA and 62XB are bonded to each other with a glue or the like to connect both ends of the sheet 62 in the Y direction. In the connection allowance forming step, the connection allowance 62TS may be formed by folding back the bag portion 62XA side of the sheet 62 so that the frame line of the newspaper 81 is on the mountain fold side. In this case, in the subsequent both-end connection step, the connection allowance 62TS is inserted into the bag portion 62XB of the reinforcing newsprint, and the bag portions 62XA and 62XB are bonded to each other with a glue or the like to connect the both ends in the Y direction of the sheet 62. That's fine. When the pattern is a straight line, both ends of the sheet 62 in the X direction may be connected so that the pattern matches the end of the sheet 62 in the X direction.

  Thus, the cylinder forming step 120 forms the cylinder 63 (see FIG. 2B) from the sheet 62. Note that the opening fold 62A when the cylinder 63 is formed may be either a mountain fold or a valley fold.

  In the flattening step 130, the cylinder 63 is mountain-folded with reference to the two axial folds 63T extending in the axial direction AX of the cylinder 63, and the cylinder 63 is flattened (see FIGS. 2B and 6). In the flattening step 130, the shaft fold 63T is a mountain fold, but finally becomes a valley fold in the gusset portion 10M of the bag body 10 (see FIG. 2B). The shaft fold 63T is preferably parallel to the axial direction AX of the cylinder 63. When two gusset forming folds 63Y constituting one gusset 10M (see FIG. 1B) are provided, it is preferable that a joint 62J (see FIG. 5B) is located between the gusset forming folds 63Y.

  The bottom forming step 140 (see FIG. 2B) includes a corner fold forming step (see FIG. 7A), a cross fold forming step (see FIG. 7B), a bottom precursor forming step (see FIGS. 7C to 7F), and a closing step (see FIG. 7F to 7G).

In the corner crease forming step, both corners on one opening end 63KA (see FIG. 6) side of the tube 63 are folded back (see FIG. 7A). The folded portion is a right-angled isosceles triangle. It is preferable that the turning amount L _63R of the corner of the tube 63 is equal to the left and right with _respect to the axis AX.

  As shown in FIG. 7B, in the cross fold forming step, the one open end 63KA (see FIG. 6) side of the cylinder 63 is turned back with reference to the axial fold 63T of the portion turned back in the corner fold forming step.

  Thus, according to the corner fold forming step, the corner folds 63R are formed at both corners of the tube 63, and the cross folds 63X are formed in the tube 63 so as to intersect the axial direction AX of the tube 63 (FIG. 7D). The cross fold 63X is preferably perpendicular to the axial direction AX of the cylinder 63. In the axial direction AX of the cylinder 63, the cross fold 63X is preferably located on the opposite side of the opening fold 62A.

In the bottom precursor forming step, the portion folded in the cross fold forming step is returned (see FIG. 7C), and then the portion folded in the corner fold forming step is returned (see FIG. 7D). Further, thereafter, the one open end 63KA side is opened with reference to the corner fold 63R or the corner fold 63R and the cross fold 63X (see FIGS. 7D to 7F). By the bottom precursor forming step, the bottom precursors 63L and 63M are formed in pairs on the open end 63KA side (see FIG. 6) of the cylinder 63 (see FIG. 7F).

In the closing step, the paired bottom precursors 63L and 63M are folded back with reference to the bottom folding lines 63LA and 63MA (see FIGS. 7F to 7G). And the front-end | tip parts of the folded-back precursor 63L, 63M are piled up, and the overlapped part is joined. Thus, the bottom precursors 63L and 63M become the bottom 10B of the bag body 10 (see FIG. 2B). It is preferable that the folding amounts L _63LA and L _63MA of the bottom precursors 63L and 63M, that is, the intervals from the tips of the bottom precursors 63L and 63M to the bottom folding lines 63LA and 63MA are equal. In the closing step, the bottom precursor 63L is folded and folded with reference to the bottom folding line 63LA, and then the intersections P1 and P2 (see FIG. 7F) between the contour of the bottom precursor 63L and the bottom folding line 63LA are obtained. The bottom precursor 63L may be folded back so that the contour of the bottom precursor 63L is on the intersections P1 and P2.

In the gusset forming step 150, both edges in the vicinity of the shaft fold 63T of the flattened cylinder 63 are folded back toward the center in the width direction of the cylinder 63 (see FIG. 8A). Folding amount L _MY of both edges are preferably equal. Here, the folded amount _{L MY} is the length of the interval between the axial crease 63T and gusset forming folds 63Y. The edge in the vicinity of the shaft fold 63T may be folded back in any direction on the bottom side of the precursor 63L, 63M with respect to the tube 63 or on the opposite side. When it is desired to clarify the outline of the bottom 10B of the bag body 10 (see FIG. 2B), the edge in the vicinity of the axial fold 63T is directed toward the surface opposite to the surface on which the bottom precursors 63L and 63M are provided. It is preferable to fold the part.

  In this way, by folding back the edge portion in the vicinity of the axial fold 63T in the flattened tube 63, gusset forming folds 63Y are formed on both sides of the tube 63 (see FIGS. 8B to 8C). The two gusset forming folds 63Y extend in the direction of the axis AX of the cylinder 63, and finally determine the width Ln1 (see FIG. 1B) of the gusset 10M of the bag body 10.

Here, it is preferable to form the guide fold 63G in the bottom precursors 63L and 63M simultaneously with the formation of the gusset forming fold 63Y (see FIGS. 8B to 8C). The guide fold 63G extends on the same straight line as the gusset forming fold 63Y. Here, the folded amount _{L 63R} value obtained by subtracting the folding amount _{L 63LA} precursor 63L (see FIG. 7A) (see FIG. 7F) of the corners of the tube _{63 (= L 63R -L 63LA)} , or the corner of the cylinder 63 When a value (= L _63R −L _63MA ) _obtained by subtracting the folding amount L _63MA of the precursor _63M (see FIG. 7F) from the folding amount L _63R of the precursor _63M (see FIG. 7A) is defined as ΔL (see FIG. 8A), It is preferable that the ratio of the edge folding amount L _MY (= L _MY / ΔL) is greater than 0 and less than 1, that is, the guide fold 63G does not intersect the bottom fold lines 63MA and 63LA.

  After the gusset forming step 150, when the one open end 63KA side of the tube 63 is expanded, the bag body 10 shown in FIG. 9 can be obtained. Here, the bottom portion 10B of the bag body 10 is a portion surrounded by the bottom folding lines 63LA and 63MA, the four corner folds 63R, and the two guide folds 63G. Further, the gusset 10M of the bag body 10 is formed by two gusset forming folds 63Y, two square folds 63R, and one guide fold 63G.

  In the opening folding step 160, the opening peripheral portion of the bag body 10 is folded based on the opening fold 62A (see FIG. 9C) (see FIG. 2B).

  In the above embodiment, the bag body manufacturing method 100 shown in FIG. 2B has been described. However, the opening crease forming step 115 and the opening folding step 160 are omitted, that is, the bag body manufacturing method 100 shown in FIG. 2A also. Good.

Further, in the gusset forming step 150 described with reference to FIGS. 8A to 8B, the ratio of the folding amount L _MY of both edges to ΔL (= L _63R −L _63LA ) (= L _MY / ΔL) is 1 or more. In other words, in other words, when the guide fold 63G intersects with the bottom fold lines 63MA and 63LA (see FIG. 10A), the bag body 10 as shown in FIG. The portion surrounded by 63LA and 63MA and the two guide folds 63G is the bottom 10B of the bag body 10. Further, the gusset 10M of the bag body 10 has one axial fold 63T and two folds, respectively. A gusset forming fold 63Y, two corner folds 63R, and one guide fold 63G are formed. Vertical length of the bottom 10B of Tsu grayed body 10 Lm2 is equal to the vertical length Lm1 of the opening 10X, horizontal length Ln2 of the bottom 10B of the bag body 10 is equal to the lateral length Ln1 of the opening 10X.

  Further, the gusset forming step 150 may be omitted in both the bag body manufacturing method 100 shown in FIGS. 2A and 2B.

  As described above, in the bag body manufacturing method 100, the cylinder forming step 120, the flattening step 130, and the bottom forming step 140 are steps for forming the basic structure of the bag body 10, and the gusset forming step 150 is performed. This can be said to be a step for determining the type of the back body 10 (the presence or absence of the gusset 10M, the type of the shape of the gusset 10M). That is, in the bag body manufacturing method 100, a step for determining the type of the back body 10 is performed after the step for forming the basic structure of the bag body 10. Each step can be performed while grasping the image of the main body 10. In addition, after the bottom forming step 140 and before the gusset forming step 150, the tube 63 is once expanded to confirm the shape of the bag body 10 before the gusset is formed, that is, the basic structure of the bag body 10. Is also possible.

  Moreover, in the bag main body manufacturing method 100, since all the folds that form the contour line of the bottom 10B of the bag main body 10 and the gusset 10M are formed, the finish of the bag main body 10 is good.

  Next, a method for manufacturing the handle 20 will be described.

  In the manufacturing method of the handle 20, first, a bar 87 is arranged so as to intersect the horizontal direction (X direction) and the vertical direction (Y direction) of the sheet 86 made of newspaper, and the sheet 86 is wound around the bar 87 (FIG. 11A). (Ref.) Perform the winding step. Then, the sheet 86 is wound from one corner side to the diagonal corner side (see FIG. 11B). Finally, the diagonal corners are attached to the sheet 86 itself. Finally, the rod 87 is pulled out from the sheet 71 wound in the shape of a rod. Thus, the handle 20 (see FIG. 1) made of the sheet 86 is produced. Then, both ends of the handle 20 are attached to the bag body 10 with an adhesive. For example, both ends of the handle 20 may be attached to the inner surface or the outer surface of the bag body 10. In addition, when the opening of the bag body 10 is folded, the handle 20 is placed in the gap between the folded portions of the opening or the folded portions of the bottom precursors 63L and 63M (see FIGS. 7G to 7F). You may insert both ends. The number of handles 20 attached to the bag body 10 may be one or two.

  In the method for manufacturing the handle 20, the sheet forming step 110 is preferably performed before the winding step as necessary. Further, a margin cutting step for cutting the margin portion 86Y of the sheet 86 may be performed before the winding step. The blank portion 86Y to be cut out is preferably an L-shaped portion 86Z shown in the drawing. By performing the margin cutting step, the margin portion does not appear in the handle 20 after manufacture, and as a result, the design is not impaired by the margin portion.

  Next, details of the headline 30 will be described.

  As shown in FIG. 12, the heading 30 includes a mount 89 and a condition identifier 90 attached to the mount 89. The mount 89 is provided with a through-hole 89X of the connector 31 (see FIG. 1A) that connects the mount 89 and the bag 10. The condition identifier 90 represents the folding condition of the newspaper when making the bag body 10 from the newspaper, the sheet forming condition identifier 91 in the sheet forming step 110, the opening crease identifier 92 in the opening crease forming step 115, and the corner crease. A corner fold identifier 93 representing the position of 63R (see FIG. 7D), a bottom fold identifier 94 representing the positions of the bottom fold lines 63LA and 63MA (see FIG. 7F), and a position of the gusset forming fold 63Y (see FIG. 8B). And a gusset forming fold identifier 95.

  The sheet forming condition identifier 91 includes a size identifier 91A, an overlap number identifier 91B, a folding width identifier 91C, and a folding height identifier 91D.

  The size identifier 91A represents the size of the newspaper used to form the sheet 62. When the newspaper size is used as it is, “1” is used, and when the newspaper is folded in half, “1/2” is folded into four. When it is set to “1/4”. Since the size identifier 91A in the bag body manufacturing method 100 described above is “1”, “1” is checked.

  The overlap number identifier 91B represents the number of newspapers used to form the sheet 62, and a required number is used. For example, the overlap number identifier 91B in the bag body manufacturing method 100 described above is the sum of the number “1” of the front newspaper 81 and the number “4” of the reinforcing newspaper 82, that is, “5”.

  The folding width identifier 91C represents the position of the X-direction folding line 83AX (see FIG. 3B), and the folding height identifier 91D represents the position of the Y-direction folding line 83AY (see FIG. 3B). For example, in the above-described bag body manufacturing method 100, the folding width is “1/8” and the folding height is “1/6”, so that the folding width identifier 91C is “1/8”, and Then, “1/6” of the folding height identifier 91D is checked. The folding width identifier 91C and the folding height identifier 91D may be identifiers representing the length from the end of the newspaper.

  The opening crease identifier 92 represents a folding condition in the opening crease formation step 115 (see FIG. 4), and an opening fold number identifier 92A representing the number of folds and an opening fold length identifier 92B representing the fold length for one time. And have. For example, in the bag body manufacturing method 100 described above, since the number of opening folds is “2” and the opening fold length is “1/8”, the opening fold number identifier 92A is set to “2”. Check “1/8” of the folding length identifier 92B. The opening fold length identifier 92B may be an identifier representing the length from the end of the sheet 62 to the opening fold 62A.

The corner crease identifier 93 represents the formation position of the corner crease 63R (see FIG. 7D), and may be a ratio (= L _63R / W) of the folding amount L _63R to the tube width W, or the folding amount L _63R. It may be the length itself.

The bottom folding identifier 94 represents the formation position of the bottom folding lines 63LA, 63MA (see FIG. 7F). For example, the folding amount L _{63LA of} the bottom precursors 63L, 63M with reference to the bottom folding lines 63LA, _63MA. , L _63MA may be used. More specifically, the bottom folding identifier 94 is a ratio of the folding amount L _{63LA to} the folding amount L _63R (see FIG. 7D) (= L _63LA / L _63R ) or the folding amount with _{respect to} the folding amount L _63R (see FIG. 7D). The ratio of L _63MA (= L _63MA / L _63R ) may be _used , _or the lengths of the folding amounts L _63LA and L _63MA may be used. When the folding amounts L _63LA and L _{63MA of} the bottom precursors 63L and _63M are equal, only one of the folding amounts L _63LA and L _63MA may be represented as the bottom folding identifier 94. In addition, as another example of the bottom folding identifier 94, instead of the folding amounts L _63LA and L _63MA of the bottom precursors 63L and _63M , a value half the interval Ln2 between the bottom folding lines 63LA and 63MA is used. Also good. That is, the bottom turn identifier 94 may be (0.5 × _Ln2 / L _63R ).

The gusset forming fold identifier 95 represents the formation position of the gusset forming fold 63Y, and represents, for example, the folding amount of the gusset forming fold 63Y with reference to the shaft fold 63T (for example, the folding amount L _{MY of} both edges). ). Further, the gusset forming fold identifier 95 may represent a ratio (= L _MY / ΔL) of the folding amount L _MY of both edges with respect to ΔL (= L _63R −L _63LA ), or the actual dimension of L _MY Good.

  By attaching such a heading 30 to the bag 2, the manufacturing conditions of the bag body 10 can be grasped. Therefore, a person who has seen the manufactured bag 2 can manufacture the same bag 2 using the conditions described in the heading 30 associated with the bag 2 as a guide.

  When each step is omitted, an abbreviated identifier representing the omitted step may be included in the condition identifier 90. An example of an abbreviated identifier is a character string “no crease”. Thereby, it is possible to determine whether the check in the headline 30 is omission or whether the step is omitted.

  Further, the heading 30 may include a cover specifying identifier for specifying a newspaper used for making the bag body 10, particularly a cover. The newspaper specific identifier includes a newspaper company name, a date, the number of pages, and a position and size occupied by a symbol on the entire newspaper. Since the headline 30 has the newspaper specific identifier, the bag 2 having the same shape and the same design can be produced. For this reason, when mass production of the bag 2 of the same pattern is considered, the newspaper specific identifier is an effective means.

  In addition, the order in which the identifiers included in the condition identifier 90 are arranged on the mount 89 preferably matches the order in which folds corresponding to the identifiers are formed in the bag body manufacturing method. As a result, it becomes possible to make a crease at a predetermined position while manufacturing the bag, so that it is possible to prevent forgetting to make a crease.

  Furthermore, the heading 30 may have an identifier 98 relating to the manufacture of the handle. As the identifier 98 relating to the manufacture of the handle, in addition to the identifiers 98A and 98B similar to the size identifier 91A and the overlap number identifier 91B, an identifier 98C indicating information on the rod used for manufacturing the handle (for example, the shape of the rod), There is an identifier 98D indicating the number of handles.

  In the above embodiment, the condition identifier 90 representing the newspaper folding condition is provided in the headline 30; however, the present invention is not limited to this, and the condition identifier 90 may be a crease provided in the newspaper or a drawn fold line. . The condition identifier 90 provided or drawn on the newspaper functions as a bag body manufacturing method, that is, a manual.

  In the said embodiment, although the bag was manufactured from the newspaper, this invention is not restricted to this, You may manufacture containers (for example, a bag, a bag, a bag, etc.) other than a bag from a newspaper.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

2 Bag 10 Bag body 10B Bottom 10X Opening 20 Handle 61 Base paper 62 Sheet 63 Tube 71 Bar 81, 82 Newspaper 90 Condition identifier 91 Sheet formation condition identifier 91A Size identifier 91B Stack number identifier 91C Folding width identifier 91D Folding height identifier 92 Opening Fold identifier 92A Open fold number identifier 92B Open fold length identifier 93 Square fold identifier 94 Bottom fold identifier 95 Machi forming fold identifier 100 Bag body manufacturing method 110 Sheet forming step 115 Open fold forming step 120 Cylinder forming step 130 Flattening step 140 Bottom forming step 150 gusset forming step 160 opening folding step

Claims (17)

  When manufacturing a container by folding a sheet of newspaper, a container manufacturing condition heading is provided, which includes a condition identifier representing the manufacturing condition of the container. When the condition identifier includes a plurality of identifiers representing the setting position of the fold of the sheet
The container manufacturing condition heading according to claim 1, wherein the identifier is arranged in the order in which the folds are provided on the sheet.   3. The container manufacturing condition heading according to claim 1, further comprising a newspaper identifier for identifying the newspaper.   4. The container manufacturing condition heading according to claim 1, wherein the condition identifier includes a size identifier representing a size of a sheet created from the newspaper.   5. The container manufacturing condition heading according to claim 1, wherein the condition identifier includes a number identifier representing the number of the newspapers stacked on the sheet. When the newspaper is formed with a dimension larger than that of the sheet and the step of forming the sheet is defined as a sheet forming step,
The container manufacturing condition heading according to any one of claims 1 to 5, wherein the condition identifier includes a sheet forming condition identifier representing a folding amount of an edge of the newspaper in the sheet forming step. The step of forming the opening fold of the container on the sheet is performed before the formation of the container, and the step of folding the opening of the container on the basis of the fold for opening And if we define
The said condition identifier has an opening crease identifier showing the setting position of the said fold for opening parts, The manufacturing condition headings for containers of any one of Claim 1 thru | or 6 characterized by the above-mentioned. A step of forming the cylinder from the sheet by connecting both ends of the sheet, a cylinder forming step, and a step of forming the container in which one end of the cylinder is folded and the folded one end forms the bottom, and a bottom forming step, respectively If defined,
The bottom forming step includes
A flattening step of flattening the cylinder with reference to two axial folds parallel to the axial direction of the cylinder;
A corner crease forming step of forming a corner crease at both corners of a portion of the flattened tube that is on the bottom side of the container;
Opening one end side of the cylinder on the basis of the corner fold, and forming a bottom precursor forming a pair of the bottom precursor,
A closing step of folding back the bottom precursor so as to close the opening on the one end side,
The said condition identifier is provided with the corner crease identifier showing the setting position of the said corner crease, The manufacturing condition heading for containers of any one of Claim 1 thru | or 7 characterized by the above-mentioned. The bottom forming step is performed after the flattening step and before the bottom precursor forming step, and forms an intersection fold that intersects the axial fold on one end side of the flattened cylinder. A crease forming step;
9. The container manufacturing condition heading according to claim 8, wherein the condition identifier includes a cross crease identifier representing a set position of the cross crease.   The container manufacturing condition heading according to claim 8 or 9, wherein the condition identifier includes a bottom folding position identifier representing a folding position of the bottom precursor in the closing step. When defining the step of folding the cylinder so that two gusset forming folds that form the gusset portion of the container are formed in the cylinder as a pair,
It is provided with a gusset-shaped identifier indicating that the interval between the two gusset forming folds, which is the width of the gusset portion, is narrower than the width of the bottom of the container determined by the folding position of the precursor at the bottom. The container manufacturing condition heading according to any one of claims 8 to 10. Connecting the both ends of the sheet and forming a cylinder from the sheet is a cylinder forming step, and two gusset forming folds that form a gusset portion of the container are paired to form the cylinder. When each folding step is defined as a gusset formation step,
12. The manufacturing condition header for a container according to claim 1, wherein the condition identifier includes a gusset forming fold identifier indicating a formation position of the gusset forming fold. A cylinder forming step of forming a cylinder by connecting both ends of a newspaper sheet;
A flattening step of flattening the cylinder with reference to two axial folds parallel to the axial direction of the cylinder;
A bottom forming step that is performed after the flattening step, folds one end portion of the cylinder, and forms a container in which the folded one end portion forms a bottom;
A gusset forming step that is performed after the bottom forming step, folds the vicinity of the two axial folds, and forms a gusset forming fold that becomes a gusset portion of the container between the two axial folds;
With
The bottom forming step includes
A bottom precursor forming step of opening one end of the cylinder and forming the paired bottom precursor;
And a closing step of turning back the bottom precursor so as to close the opening on the one end side.   The method for producing a container according to claim 13, further comprising a guide crease forming step of forming a guide fold extending on the same line as the two shaft folds on the bottom.   The method for manufacturing a container according to claim 14, wherein the guide crease forming step is performed simultaneously with the gusset forming step. In the clogging step, when a line where the precursor at the bottom is folded is defined as a bottom folding line,
The method for manufacturing a container according to any one of claims 13 to 15, wherein the guide fold line does not intersect the bottom fold line. A sheet forming step of making a sheet by stacking a plurality of newspapers;
A cylinder forming step of forming a cylinder by connecting both ends of the sheet;
A bottom forming step of folding one end of the cylinder and making a container with the folded one end forming a bottom; and
In the sheet forming step, a portion that becomes an opening of the container is folded back.

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