JP4320427B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag made of a sheet body (that is, a plate-like body) made of paper, cardboard, synthetic resin, leather, leather, or the like. In particular, it has a bottom, a front body, a rear body, a left side body, and a right side body, the top end of the front body, the top end of the rear body, and the left side body. An opening formed in parallel to the bottom on the top facing the bottom by the top end of the right side and the top end of the right side body is narrowed in the front-rear direction and closed, or in the front-rear direction It is possible to expand and open, and without changing the length of the bottom portion in the left-right direction, the length of the opening portion in the left-right direction is the same as the length of the bottom portion in the left-right direction. The length in the left-right direction is shortened so that the opening is narrowed in the left-right direction, and the length in the left-right direction is shortened by narrowing the opening in the left-right direction. The state is changed to the same state as the length of the bottom in the left-right direction. Door bag on for a possible packaging.

  A paper bag for storing a purchased item or a gift is generally composed of a rectangular tube or a cylindrical body, and one end of the body of the rectangular tube or the cylindrical body is closed and the other end is closed. It is an open opening. And generally, it can be folded flat when not in use. Further, in use, it is formed so as to be folded into the left side body part and the right side body part among the body parts composed of the front body part, the rear surface body part, the left side body part, and the right side body part. By expanding the pleats, the opening is expanded (opened) in the front-rear direction (front body part side and rear body part side) to open the opening part.

  For this purpose, the direction in which the opening is closed or opened is generally the front-rear direction in which the front body and the rear body are present.

  That is, the left side body part and the right side body part are extended on both side edges of the front body part and the rear side body part, and the front body part, the rear body part, the left side body part, and the right side body part as a whole. From the same state as the length of the bottom portion in the left-right direction, without changing the length of the bottom portion in the left-right direction, The length in the left-right direction is shortened and the opening is changed to a state narrowed in the left-right direction, and the length in the left-right direction is shortened by narrowing the opening in the left-right direction. A packaging bag that can be changed from the state to the same length as the length of the bottom in the left-right direction has not been proposed so far.

In contrast to the above points, a drawstring-like handbag is disclosed that can close a top opening by squeezing a string like a cloth drawstring while being a paper bag (see, for example, Patent Document 1). ).
JP, 11-171210, A This paper purse-like handbag is formed by folding each ridge edge of the front, rear, left, and right trunks of a bag body having a corner bottom inward to form an inverted triangular pleat. A hole for passing a string is formed in each upper side portion around the part, and a hand strap string also used as an aperture is inserted into the hole.

  By pulling this string, the opening is closed in the direction in which the folds overlap and the direction in which the folds perpendicular to the folds are folded, and it is closed like a drawstring.

  However, the drawstring-like handbag proposed in Japanese Patent Application Laid-Open No. 11-171210 is closed by squeezing and closing the top opening with a string, and therefore cannot be applied to a bag without a string. In addition, friction is generated between the string insertion hole and the string, and opening and closing cannot be performed quickly, and the hole may be damaged due to friction with the string.

  Above all, this purse-like handbag proposed in Japanese Patent Laid-Open No. 11-171210 has a bottom, a front body, a rear body, a left side body, and a right side body. The top end side of the front body portion, the top end side of the rear surface body portion, the top end side of the left side surface body portion, and the top end side of the right side surface body portion are parallel to the bottom portion so as to face the bottom portion. The opening formed on the bottom can be closed by being narrowed in the front-rear direction, or can be opened by being widened in the front-rear direction, and without changing the length of the bottom in the left-right direction. The length in the left-right direction of the part is changed from the same state as the length in the left-right direction of the bottom part to a state in which the length in the left-right direction is shortened and the opening is narrowed in the left-right direction; The length in the left-right direction is narrowed in the left-right direction. From the state are Kuna', it was not possible to change to the same state and the length in the horizontal direction of the bottom.

  The present invention has a bottom portion, a front body portion, a rear surface body portion, a left side surface body portion, and a right side surface body portion, the top end side of the front surface body portion, the top end side of the rear surface body portion, and the left side. An opening formed parallel to the bottom portion at the top portion facing the bottom portion by the top end side of the surface body portion and the top end side of the right side surface body portion is narrowed in the front-rear direction and closed, or front-rear The length of the opening in the left-right direction is the same as the length of the bottom in the left-right direction without changing the length of the bottom in the left-right direction. From the state, the length in the left-right direction is shortened so that the opening is narrowed in the left-right direction, and the length in the left-right direction is shortened by narrowing the opening in the left-right direction. From the above state to the same state as the length of the bottom in the left-right direction. It is the purpose of the proposed packaging bag that can be.

  In order to solve the above problems, the present invention has a bottom, a front body, a rear body, a left side body, and a right side body, a top end side of the front body, and a rear surface. An opening formed in the top portion facing the bottom portion by the top end side of the trunk portion, the top end side of the left side barrel portion, and the top end side of the right side barrel portion is formed in parallel with the bottom portion in the front-rear direction ( It can be closed by being narrowed in the direction of arrows 71 and 72 in FIG. 7 or opened in the front-rear direction (in the direction of arrows 73 and 74 in FIG. 7), and the length of the bottom in the left-right direction. Without changing the length, the length of the opening in the left-right direction is the same as the length of the bottom in the left-right direction as shown in FIG. 7, and the length in the left-right direction as shown in FIG. And the opening is changed to be narrowed in the left-right direction, and the length in the left-right direction is changed. The packaging bag can be changed from the state shown in FIG. 8 in which the opening is narrowed in the left-right direction to the same state as the length in the left-right direction of the bottom shown in FIG. This is a proposal.

  Specifically, the packaging bag proposed by the present invention has the form described below.

  First, the packaging bag of the present invention has a bottom, a front body, a rear body, a left side body, and a right side body, the top end side of the front body, and the rear body. An opening formed in the top portion facing the bottom portion by the top end side, the top end side of the left side barrel portion, and the top end side of the right side barrel portion is formed in the front-rear direction (FIG. 7). Can be closed by being narrowed in the direction of arrows 71 and 72), or can be widened and opened in the front-rear direction (in the direction of arrows 73 and 74 in FIG. 7), and the length of the bottom in the left-right direction can be increased. Without changing, the length in the left-right direction of the opening is the same as the length in the left-right direction of the bottom as shown in FIG. 7, and the length in the left-right direction is shortened as shown in FIG. The opening is changed to a state narrowed in the left-right direction, and the length in the left-right direction is the opening. 8 is a packaging bag that can be changed from the state shown in FIG. 8 narrowed in the left-right direction to the same state as the length in the left-right direction of the bottom as shown in FIG. The packaging bag includes the first sheet member and the second sheet member as constituent members.

  The first sheet member includes a rectangular first sheet body and a pair of opposite sides of the first sheet body as a lower base side and a side shorter than the lower base side as an upper base side, respectively. A pair of trapezoidal trunk sheet bodies extending from a pair of opposite sides of the first sheet body, and further extending from the upper base side of the trunk sheet body as the upper base side, the lower base side A trapezoidal reinforcing sheet body that is longer than the upper base side of the upper base side of the body sheet body, and each of the left and right oblique sides of each of the body sheet bodies is first locked via a first broken line part. It has one part.

  The second sheet member includes a square second sheet body having a size equal to the square first sheet body, the second sheet body of the second sheet member, and the first sheet member. When the first sheet body of the sheet member is overlaid, the opposing pair of sides of the second sheet body that is in a position orthogonal to the opposing pair of sides of the first sheet body Each of the ends extends from a pair of opposing sides of the second sheet body, and at least the length of the extending longitudinal direction of the trapezoidal body sheet body of the first sheet member extends. A side body sheet body corresponding to the length in the longitudinal direction is provided.

  Furthermore, when the second sheet member of the second sheet member and the first sheet member of the first sheet member are overlaid, the second sheet member is the first sheet member. Through the second fold line portion extending perpendicularly to each side from both ends of the opposing pair of sides of the second sheet body, which is in a position orthogonal to the opposing pair of sides. A slide piece extending in the outer direction on both sides of the part sheet body, the slide piece part from the position of each end of the pair of opposing sides of the second sheet body. In the direction in which the side surface body sheet body extends in an oblique direction with respect to a pair of opposite sides of the sheet body, the side surface body sheet has sides extending outwardly on both sides, and the slide piece portion On the outer end side, a second locking piece portion is provided via a third broken line portion.

  In the second sheet member, the side surface body sheet body of the second sheet member includes a second sheet body of the second sheet member and a first sheet body of the first sheet member. And the second sheet from the center of each of the opposing set of sides of the second sheet that are positioned perpendicular to the opposing set of sides of the first sheet. A fourth fold line portion extending in a direction in which the side body sheet body extends in a direction perpendicular to a pair of sides facing each other is formed.

  The rectangular first sheet body of the first sheet member and the square second sheet body of the second sheet member are overlapped to form the bottom portion of the packaging bag.

  And the front body part and the back body part facing each other across the bottom part by bending the trapezoidal body part sheet body of the first sheet member with the lower base side as a fold line part and standing up And further bending the first locking piece portion at the first broken line portion toward an inner space region surrounded by the opposed front body portion and back body portion, and the reinforcing sheet. The body is bent toward the inner space region with the upper bottom side as a fold line portion, and is overlapped with the front body portion or the back body portion with the bent first locking piece portion interposed therebetween.

  Further, the left side cylinders which face each other across the bottom part by standing up the side body sheet of the second sheet member with the side corresponding to the base end as a broken line part toward the inner space region side. Part and a right side body part are formed.

  Further, the slide piece portion of the second sheet member is bent toward the inner space region via the second fold line portion, and the second locking piece portion is bent to the third fold line portion. The reinforcing sheet body and the front body part or the back body part that are folded toward the side opposite to the internal space region and folded so that the first locking piece part exists inside In between, the said slide piece part is inserted and said 1st latching piece part and 2nd latching piece part are latched.

  In this way, the front body part and the back body part made of the trapezoidal body sheet body of the first sheet member are centered on the respective lower bottom sides, and the second fold line of the side body sheet body When the fourth fold line portion bends toward the inner space region side by rotating in the front-rear direction together with the portion, both sides sandwiching the fourth fold line portion in the side body sheet body Is a fold when the fourth fold line portion is bent toward the inner space region side, the opening is narrowed in the front-rear direction and closed, and the fourth fold line portion is the inner space. When the state of being bent toward the region side returns to the state of being not bent, the opening is expanded and opened in the front-rear direction.

  In addition, when the second sheet member and the first sheet member of the first sheet member are overlapped with each other, the side body sheet member of the second sheet member is opposed to the first sheet member. The slide piece portion is rotated together with the side body sheet body by rotating in the left-right direction around the pair of opposite sides of the second sheet body that is at a position orthogonal to the pair of sides. The reinforcing sheet body and the front body section or the front body section or the front body section or the front body section or the front body section or the front body section. Without changing the length of the bottom portion in the left-right direction by intruding between the back body portion, the left-right length of the opening is changed from the same state as the length of the bottom portion in the left-right direction. The length of the direction is shortened and the opening is narrowed in the left-right direction And it is changed, the length of the right and left direction is the opening from the state that is shorter narrowed in the horizontal direction is changed to the same state and the length in the horizontal direction of the bottom.

  In the packaging bag of the present invention of the above-described form, the first locking piece portion and the second locking piece portion engage with each other so that the length of the opening portion in the left-right direction is in the left-right direction. Opening in the left-right direction when the state is reduced from the narrowed and shortened state to the same state as the length in the left-right direction of the bottom can be regulated.

  Further, the end portion of the reinforcing sheet body is in contact with the left side surface body portion and the right side surface body portion, and / or the second sheet body is opposed to the second sheet body. The side body sheet in a direction in which the side body sheet body extends in a direction that is oblique to the opposing pair of sides of the second sheet body from the positions of both ends of the pair of sides. The side extending in the outward direction on both sides of the body and the lower base side of each of the trapezoidal body sheet bodies of the first sheet member are in contact with each other, so that the length in the left-right direction of the opening is Form in which the closing of the opening in the left-right direction when the length in the left-right direction is shortened and the opening is narrowed in the left-right direction is restricted from the same state as the length in the left-right direction. Can be.

  A first hole through which the front body part, the reinforcing sheet body and the back body part and the reinforcing sheet body are inserted, and a second hole through which the left side body part and the right side body part are inserted. Are provided on the upper side of the opening, and a hand strap is passed through the first hole and the second hole, and a locking tool for locking to the second hole is provided at the end of the string. It can be in the form.

  Since the hand strap is inserted into the end of the strap, the left side torso can be pulled by pulling the hand strap. And since a right side trunk | drum turns to an opening part side, an opening part can be narrowed in the left-right direction. Moreover, since the hand strap is not inserted over the entire opening, the occurrence of friction between the strap and the hole is suppressed as much as possible.

  In addition, a notch that leaves one side is formed in either one of the first sheet members to form an insertion piece, and a cut-out for inserting the insertion piece into the other body sheet body The insertion piece can be rotated about the one side and inserted into the cut end to form a closing tool for the opening.

  Thus, by making a cut in a part of the body sheet body, it is possible to easily create a closing tool for the opening. Therefore, it is not necessary to attach a separate member.

  In the packaging bag of the present invention, each of the first sheet member and the second sheet member is made of a sheet body (that is, a plate-like body) made of paper, cardboard, synthetic resin, leather, leather, or the like. Can be.

  According to the packaging bag of the present invention, it has a bottom, a front body, a rear body, a left side body, and a right side body, the top end side of the front body, and the rear body. An opening formed parallel to the bottom at the top facing the bottom is narrowed in the front-rear direction by the top end of the left side, the top end of the left side barrel, and the top end of the right side barrel. And can be opened by being expanded in the front-rear direction, and without changing the length of the bottom in the left-right direction, the length of the opening in the left-right direction can be changed to the left and right of the bottom. From the same state as the length of the direction, the length in the left-right direction is shortened and the opening is narrowed in the left-right direction, and the length in the left-right direction is changed to the left-right direction. From the narrowed and short state, the same as the horizontal length of the bottom. It is possible to provide a packaging bag that can be changed to the state.

  Thereby, it has a bottom portion, a front body portion, a rear surface body portion, a left side surface body portion, and a right side surface body portion, and a top end side of the front surface body portion, a top end side of the rear surface body portion, and a left side surface In the packaging bag provided with an opening formed in parallel to the bottom on the top facing the bottom by the top end of the body and the top end of the right side body, the front body, The length (size) in the left-right direction on the front side and rear side of the packaging bag formed by the rear body part is the same length (size) as the length in the left-right direction from the bottom to the opening. Without changing the length (size) of the bottom portion in the left-right direction, the length (size) in the left-right direction of the opening is the length (size) in the left-right direction. Is changed to a state in which the opening is narrowed in the left-right direction, and conversely, the length in the left-right direction (large Is) can be changed from a state in which the opening is shorter narrowed in the horizontal direction, in the same state the lateral direction of the length (the size) of the bottom.

  Thus, when the packaging bag of the present invention is viewed from the front-rear direction, it has a rectangular shape extending from the bottom to the opening with the same length (size) in the left-right direction, and the side of the bottom The shape and shape of the top side can be easily and arbitrarily changed to a trapezoidal shape having a shorter (smaller) length (size) and extending from the bottom to the opening. .

  Therefore, it is possible to provide a packaging bag having an appearance and a form excellent in design.

  Furthermore, in the packaging bag of the present invention, when viewed from the front-rear direction, the rectangular bag extends from the bottom part to the opening part with the same length (size) in the left-right direction, with respect to the side of the bottom part. The part that disappears when the top side is shorter (small) in trapezoidal shape with a shorter (smaller) length and extends from the bottom to the opening, or in other words, the packaging bag from the front-rear direction From the state where the top side extends from the bottom to the opening in a trapezoidal shape whose length (size) is shorter (smaller) than the bottom side when viewed, from the bottom to the opening in a square shape If a message or figure is displayed in the part that appears when it extends in the same length (size) in the left-right direction, it is hidden when this message or figure is present. Or can show new uses and forms that appear in some cases It is possible to provide a wear bag.

  Further, even when a hand strap is attached, a locking tool that locks the hole of the slide portion is provided at the end of the strap, and the slide portion can be slid by pulling the strap, so that the opening can be easily opened and closed.

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

  FIG. 1 is an example of a development view of a first sheet member 1 which is one of the constituent members of the packaging bag of the present invention. The one-dot chain line in the figure indicates the predicted position of the folded line part before folding, the folded line part formed after folding is indicated by a solid line, and the same number is assigned to the predicted folded line part position before folding and the folded line part after folding. It is.

  As shown in FIG. 1, the first sheet member 1 includes a rectangular first sheet body 2 and a pair of opposite sides 3a and 3b of the first sheet body 2 as lower bottom sides. A pair of trapezoidal body sheet bodies 5a and 5b extending from a pair of opposing sides 3a and 3b of the first sheet body 2 are provided with the sides shorter than the bottom side as upper base edges 4a and 4b, respectively. .

  The upper base sides 4a and 4b of the trunk portion sheet bodies 5a and 5b are further extended from the upper base sides 4a and 4b, respectively. Trapezoidal reinforcing sheet bodies 6a and 6b are provided.

  Furthermore, it has 1st latching piece part 9a, 9b, 11a, 11b via the 1st broken line part 8a, 8b, 10a, 10b in the left-right oblique side part of each said trunk | drum sheet | seat body 5a, 5b, respectively. ing.

  FIG. 2 is an example of a development view of the second sheet member 21 which is another member of the packaging bag of the present invention. The one-dot chain line in the figure indicates the predicted position of the folded line part before folding, the folded line part formed after folding is indicated by a solid line, and the same number is assigned to the predicted folded line part position before folding and the folded line part after folding. It is.

  As shown in FIG. 2, the second sheet member 21 includes a rectangular second sheet body 22 having the same size as the rectangular first sheet body 2, and the second sheet member 21. When the sheet body 22 of the first sheet member 1 and the first sheet body 2 of the first sheet member 1 are overlapped as shown in FIG. 5, a pair of sides 3 a and 3 b facing each other of the first sheet body 2. A pair of opposite sides 25a and 25b of the second sheet 22 that are orthogonal to each other is extended from the opposite pair of sides 25a and 25b of the second sheet 22 as one side of its base end. Side body sheet bodies 36a and 36b whose length in the longitudinal direction at least correspond to the length in the longitudinal direction in which the trapezoidal body sheet bodies 5a and 5b of the first sheet member 1 extend are provided. I have.

  Here, the length in the longitudinal direction of the side body sheet bodies 36a and 36b corresponds to at least the length in the longitudinal direction in which the trapezoidal body sheet bodies 5a and 5b of the first sheet member 1 extend. The length in the longitudinal direction of the side body sheet bodies 36a, 36b is substantially equal to the length in the longitudinal direction in which the trapezoidal body sheet bodies 5a, 5b of the first sheet member 1 extend, and is slightly It is short.

  When the second sheet member 21 of the second sheet member 21 and the first sheet member 2 of the first sheet member 1 are overlaid as shown in FIG. From the both ends of the pair of opposing sides 25a, 25b of the second sheet 22 that are orthogonal to the pair of opposing sides 3a, 3b of the first sheet 2 to the sides 25a, 25b Slide piece portions 40a, 40b, 41a, 41b extending outwardly on both sides of the side body sheet members 36a, 36b via second fold line portions 37a, 37b, 38a, 38b extending perpendicularly. Have.

  This slide piece part 40a, 40b, 41a, 41b is a set of sides facing the second sheet body 22 from the positions of both ends of the pair of sides 25a, 25b facing the second sheet body 22, respectively. It has sides 40c, 40d, 41c, 41d extending obliquely with respect to 25a, 25b and extending in the outward direction on both sides of the side body sheet members 36a, 36b in a direction in which the side body sheet members 36a, 36b extend.

  Furthermore, the second locking piece portions 31a, 31b, 32a, and 32b are provided on the outer ends of the slide piece portions 40a, 40b, 41a, and 41b via the third broken line portions 29a, 29b, 30a, and 30b. is doing.

  In the second sheet member 21, the side body sheet bodies 36 a and 36 b of the second sheet member 21 include the second sheet body 22 of the second sheet member 21 and the first sheet member 1. When the sheet body 2 is overlaid, the pair of opposing sides 25a and 25b of the second sheet body 22 that are perpendicular to the pair of opposing sides 3a and 3b of the first sheet body 2 Fourth fold line portions 35a and 35b extending in the direction in which the side body sheet portions 36a and 36b extend perpendicularly to a pair of opposing sides 25a and 25b of the second sheet member 22 from the respective central portions are formed. ing.

  As shown in FIG. 2, the apex is located at the fourth folding line portions 35a and 35b below the side body sheet bodies 36a and 36b, and the sides 25a and 25b that are boundaries with the sheet body 22 are the bottom sides. A triangular fold is provided. The reason why this triangular folding is provided is that the fourth folding line portions 35a and 35b when the opening is closed and opened in the front-rear direction, which will be described later, and the packaging bag is made flat. This is to enable closing.

  Both the first sheet member 1 and the second sheet member 21 described above can be made of a sheet body (that is, a plate-like body) made of paper, cardboard, synthetic resin, leather, leather, or the like.

  As described above, the packaging bag of the present invention including the first sheet member 1 and the second sheet member 21 described with reference to FIGS. 1 and 2 is formed as follows.

  The rectangular first sheet body 2 of the first sheet member 1 and the rectangular second sheet body 22 of the second sheet member 21 are overlapped as shown in FIG. To form the bottom of the packaging bag.

  As shown in FIG. 2, the second sheet member 21 is provided with bottom reinforcing sheet bodies 24 a and 24 b, and the bottom reinforcing sheet bodies 24 a and 24 b are used as the body sheet body 5 a of the first sheet member 1. 5b, and can be reinforced by overlapping each other.

  The trapezoidal body sheet bodies 5a and 5b of the first sheet member 1 are bent and raised with the lower bases 3a and 3b as fold lines, and face each other across the bottom as shown in FIG. A front body part made up of the trapezoidal body part sheet body 5a and a back body part made up of the trapezoidal body part sheet body 5b are formed.

  In addition, the first locking piece portions 9a, 9b, 11a, and 11b are first bent line portions 8a, 8b, 10a, and 10b. Bend toward the side (that is, in the direction of arrow 50a in FIG. 3).

  Further, the reinforcing sheet bodies 6a and 6b are bent toward the inner space region side with the upper bases 4a and 4b as fold lines (that is, in the direction of the arrow 50b in FIG. 3), and the bent first sheet is bent. Are placed on the front body part or the back body part with the engaging piece parts 8a, 8b, 10a and 10b interposed therebetween.

  Further, as shown in FIG. 4, the side body sheet bodies 36 a, 36 b of the second sheet member 21 are directed toward the inner space region with the sides 25 a, 25 b corresponding to the base ends as fold lines. (In other words, in the direction of arrow 50c in FIG. 4) Standing up to form a left side body portion comprising a side body sheet body 36a and a right side body portion comprising a side body sheet body 36b facing each other across the bottom. To do.

  As shown in FIG. 2, in the second sheet member 21, folding end portions 27 a and 27 b parallel to the sides 25 a and 25 b are provided on the front end sides of the side body sheet members 36 a and 36 b extending from the sides 25 a and 25 b. Bending pieces 28a and 28b for reinforcement are provided through the. The reinforcing bent pieces 28a and 28b are bent toward the inner space region at the positions of the bent portions 27a and 27b, and are arranged at the positions shown in FIG. The left side body part and the right side body part formed by the sheet bodies 36a and 36b are reinforced on the upper side, respectively.

  Further, the slide piece portions 40a, 40b, 41a, 41b of the second sheet member 21 are directed toward the internal space region side through the second folding line portions 37a, 37b, 38a, 38b (ie, the figure). 4 in the direction of the arrow 50d), the second locking piece portions 31a, 31b, 32a, 32b are opposite to the internal space region via the third folding line portions 29a, 29b, 30a, 30b. (I.e., in the direction of arrow 50e in FIG. 4).

  And between the reinforcing sheet bodies 6a, 6b folded so that the first locking pieces 9a, 9b, 11a, 11b exist inside and the front body part or the back body part. The slide pieces 40a, 40b, 41a, 41b are inserted, the first locking pieces 9a, 9b, 11a, 11b and the second locking pieces 31a, 31b, 32a, 32b Lock.

  FIG. 6 shows a case where the reinforcing sheet body 6b is folded so that the first locking piece 11b is present inside the trapezoidal body sheet body 5b forming the back body part. FIG. 10 is a perspective view of a state where a part for explaining a state in which the slide piece portion 40b is inserted and the first locking piece portion 11b and the second locking piece portion 31b are locked is omitted. In FIG. 6, the reinforcing sheet body 6 b is opened for easy understanding, but the reinforcing sheet body 6 b is thereafter bent as indicated by an arrow 50 b through the broken line portion 4 b.

  After being formed in this manner, the front body portion made up of the trapezoidal body portion sheet body 5a and the back body portion made up of the trapezoidal body portion sheet body 5b of the first sheet member 1 are respectively below Rotate in the front-rear direction (in the direction of arrows 80, 81, 82, and 83 in FIG. 7) with the second fold line portions 37a, 37b, 38a, and 38b of the side body sheet bodies 36a and 36b around the bases 3a and 3b Thus, when the fourth folding line portions 35a and 35b are bent toward the internal space region (in the directions of arrows 84 and 85 in FIG. 7), the fourth folding portions 35a and 36b in the side body sheet bodies 36a and 36b are arranged. Both sides of the fold line portions 35a and 35b are fold portions when the fourth fold line portions 35a and 35b are bent toward the internal space region (in the directions of arrows 84 and 85 in FIG. 7). Become. Then, as shown by arrows 71 and 72 in FIG. 7, the opening is narrowed in the front-rear direction and closed (not shown). Further, when the fourth fold line portions 35a and 35b are bent toward the inner space region side, as shown by arrows 86 and 87 in FIG. As shown by arrows 73 and 74 in FIG. 7, the opening is expanded in the front-rear direction and opened as shown in FIG.

  Further, the side body sheet bodies 36a and 36b of the second sheet member 21 are overlapped with the second sheet body 22 and the first sheet body 2 of the first sheet member 1 as shown in FIG. In this case, the pair of sides 25a and 25b of the second sheet 22 that are positioned perpendicular to the pair of sides 3a and 3b of the first sheet 2 are rotated in the left-right direction. Thus, the slide piece portions 40a, 40b, 41a, 41b rotate in the left-right direction around the pair of sides 25a, 25b facing the second sheet body 22 together with the side body sheet bodies 36a, 36b.

  As a result, between the reinforcing sheet body 6a folded so that the first locking pieces 9a, 9b, 11a, and 11b are present inside and the front body portion including the trapezoidal body sheet body 5a. , And between the reinforcing sheet body 6b and the back body portion formed of the trapezoidal body sheet body 5b, slide pieces 40a, 40b, 41a, 41b are shown by arrows 75, 76, 77, 78 in FIG. As shown, without changing the horizontal length of the bottom (for example, the broken line portion 3a), the horizontal length of the opening is the same as the horizontal length of the bottom (see FIG. 7). ), The length in the left-right direction is shortened and the opening is changed to a state narrowed in the left-right direction (shown in FIG. 8), and the length in the left-right direction of the bottom (for example, the broken line portion 3a) is changed. The opening is narrowed in the left-right direction and shortened. After that the state (Fig. 8 shown) is changed to the same state as the horizontal length of the bottom (Fig. 7 shown).

  FIG. 11 is a diagram for explaining the state of the left end portion of FIG. 7 of the front body portion formed of the trapezoidal body sheet body 5a in the state shown in FIG. 7, and FIG. 10 is the state in the state shown in FIG. FIG. 9 is a diagram for explaining a state of a left end portion of the front trunk portion including the trapezoidal trunk portion sheet body 5a in FIG.

  7 and 11, the side body sheet body 36 a of the second sheet member 21 is illustrated, and the second sheet body 22 and the first sheet body 2 of the first sheet member 1 are illustrated in FIG. 5. In the right direction about the side 25a of the second sheet 22 that is at a position orthogonal to the pair of opposing sides 3a, 3b of the first sheet 2 (that is, FIG. 11, in the direction of the arrow 79 b, the slide piece 40 a moves to the right with respect to the side 25 a of the second sheet 22 together with the side body sheet 36 a (that is, the arrow in FIG. 11). In the direction of 79b). As a result, the slide piece 40a is provided between the reinforcing sheet body 6a folded so that the first locking piece 9b is present therein and the front body portion formed of the trapezoidal body sheet body 5a. However, as shown by an arrow 75 in FIG. 7 (an arrow 79a in FIG. 11), the length of the opening in the left-right direction is changed to the bottom without changing the length in the left-right direction of the bottom (the broken line portion 3a). 8 is changed from the same state in the left-right direction (shown in FIG. 7) to the state in which the length in the left-right direction is shortened and the opening is narrowed in the left-right direction (shown in FIG. 8). It will be in the state shown in the figure.

  8 and 10, the side surface body sheet body 36 a of the second sheet member 21 is illustrated, and the second sheet body 22 and the first sheet body 2 of the first sheet member 1 are illustrated. 5 When stacked as shown in the figure, the left side of the second sheet 22 is centered on the side 25a of the first sheet 2 that is perpendicular to the pair of opposing sides 3a, 3b (that is, leftward (i.e., 10, the slide piece 40a is rotated leftward about the side 25a of the second sheet 22 together with the side body sheet 36a (that is, in FIG. 10). , In the direction of arrow 79c). As a result, the slide piece 40a is provided between the reinforcing sheet body 6a folded so that the first locking piece 9b is present therein and the front body portion formed of the trapezoidal body sheet body 5a. However, as shown by an arrow 77 in FIG. 8 (arrow 79d in FIG. 10), the length of the opening in the left-right direction is changed without changing the length in the left-right direction of the bottom portion (the broken line portion 3a). The state is changed from the state where the length in the left-right direction is shortened and the opening is narrowed in the left-right direction (shown in FIG. 8) to the same state as the length in the left-right direction at the bottom (shown in FIG. 7).

  As shown in FIG. 11, the first locking piece 9b and the second locking piece 31a are engaged, so that the length of the opening in the left-right direction is narrowed in the left-right direction. The opening in the left-right direction when the state is changed from the shortened state (FIG. 10) to the same state (FIG. 11) as the length in the left-right direction of the bottom portion (the broken line portion 3a) is restricted, and the form shown in FIG. become.

  Further, as shown in FIG. 10, the end portions of the reinforcing sheet bodies 6a and 6b are brought into contact with the left side body section and the right side body section including the side body section sheet bodies 36a and 36b, or the second Opposing the second sheet body 22 from the positions of both ends of the pair of sides 25a, 25b facing each other of the second sheet body 22 provided in the slide piece portions 40a, 40b, 41a, 41b of the sheet member 21. Sides 40c, 40d, 41c extending obliquely with respect to the set of sides 25a, 25b and extending outwardly on both sides of the side body sheet members 36a, 36b in a direction in which the side body sheet members 36a, 36b extend. 41d and the lower bases 3a and 3b of the respective trapezoidal body sheet bodies 5a and 5b of the first sheet member 1 are in contact with each other, or both, the length of the opening in the left-right direction is increased. ,bottom From the same state (FIGS. 7 and 11) as the length of the broken line portion 3a) in the left-right direction, the length in the left-right direction is shortened and the opening is narrowed in the left-right direction (FIGS. 8 and 10). The closing of the opening in the left-right direction when changed is restricted.

  In addition, although the packaging bag of this embodiment can make an opening part wide and narrow without a strap, it can also be used with a strap.

  Further, in the present embodiment, considering the use of a strap, two holes (14a, 14b, 16a, 16b, 13a, 13b, 15a, 15b) are formed in the body sheet bodies 5a, 5b and the reinforcing sheet bodies 6a, 6b, respectively. ) Is provided, but if it is not necessary to use a strap, it is not necessary to provide a hole.

  Fig.9 (a) is a perspective view which shows other embodiment which attached the strap.

  The strap 61 passes through the holes (16a, 16b) provided in the back body part (body part sheet body 5b) and the holes (15a, 15b) provided in the reinforcing sheet body 6b, and has one end part on the left side body. The hole 63 provided in the portion 36a is inserted through and locked by a knot, and the other end is inserted through the hole 64 provided in the right side body portion (sheet portion 36b) and locked by the knot. Further, the strap 62 passes through the holes (14a, 14b) provided in the front body part (body part sheet body 5a) and the holes (13a, 13b) provided in the reinforcing sheet body 6a, and has one end portion on the left side surface. The hole 65 provided in the body part (sheet part 36a) is inserted and locked by a knot, and the other end part is inserted through the hole 66 provided in the right side body part (sheet part 36b) and locked by a knot. .

  Since the straps 61 and 62 are provided in this way and the end portions are inserted into the holes provided in the left and right side body portions and locked with knots, the opening portions 61 and 62 are closed by pulling the straps 61 and 62 in the left-right direction. Can do. In addition, if the latch by the knot is also provided at a position where it is latched with the reinforcing sheet bodies 6a and 6b, the load applied to the left and right side body parts can be reduced.

  FIG. 9B is a rear view of FIG. One side of the rectangle is left, and the other three sides are cut to form the insertion piece 70. That is, the insertion piece 70 formed by cutting out the other three sides while leaving one side provided at the opening side end of the back body (sheet body 5b) is on the front body side (sheet body 5a) side. And can be used as a closing tool for the opening by being inserted into a horizontal single-character cut 71 provided on the front body side (sheet body 5a) side.

  In addition, the closing tool of an opening part is not limited to this, A button type thing and other closing tools may be provided in an opening part separately.

The expanded view of the 1st sheet | seat member which is one of the structural members of the packaging bag which concerns on embodiment of this invention Development view of the second sheet member The perspective view which shows the bending process of the 1st sheet member The perspective view which shows the middle of bending of a 2nd sheet | seat member The perspective view in the middle of assembling the packaging bag which concerns on this embodiment with the 1st sheet member and the 2nd sheet member The expanded perspective view which abbreviate | omitted one part explaining the engagement state of a 1st latching | locking part and a 2nd latching | locking part The packaging bag which concerns on embodiment of this invention WHEREIN: The perspective view explaining the state in which the opening part is opened when the left-right direction length of an opening part is the same as the left-right direction length of a bottom part FIG. 7 is a perspective view for explaining a state in which the opening is opened when the left-right length of the opening is smaller (shorter) than the left-right length of the bottom from the state shown in FIG. (A) Perspective view of packaging bag according to another embodiment, (b) Rear view thereof The figure explaining the state of the left end part in FIG. 8 of the front trunk | drum which consists of a trapezoidal trunk | drum sheet body in the state of FIG. 8 illustration. The figure explaining the state of the left end part in FIG. 7 of the front trunk | drum which consists of a trapezoidal trunk | drum sheet body in the state of FIG. 7 illustration.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st sheet | seat member 2 Square-shaped 1st sheet | seat body 3a, 3b A pair of edge | side (lower base) which the 1st sheet | seat body opposes
4a, 4b Upper base 5a, 5b A pair of trapezoidal body sheet bodies 7a, 7b Lower base 6a, 6b Reinforcing sheet bodies 8a, 8b, 10a, 10b First broken line parts 9a, 9b, 11a, 11b First Locking piece portion 21 Second sheet member 22 Square second sheet bodies 25a and 25b A pair of opposing sides 36a and 36b of the second sheet body Side body sheet bodies 37a, 37b, 38a and 38b First Second folding line portions 40a, 40b, 41a, 41b Slide piece portions 40c, 40d, 41c, 41d Sides 29a, 29b, 30a, 30b Third broken line portions 31a, 31b, 32a, 32b Second locking piece portions 35a , 35b Fourth fold line portion 61, 62 Strap 13a, 13b, 14a, 14b, 15a, 15b, 16a, 16b Hole 63, 64, 65, 66 Hole 62 Strap 70 Insert piece 7 Cut end

Claims (5)

A bottom portion, a front body portion, a rear surface body portion, a left side surface body portion, and a right side surface body portion; a top end side of the front surface body portion; a top end side of the rear surface body portion; An opening formed in parallel to the bottom at the top facing the bottom by the top end and the top end of the right side body portion is narrowed in the front-rear direction and closed, or expanded in the front-rear direction. Without changing the length of the bottom portion in the left-right direction, and from the same state as the length of the bottom portion in the left-right direction, without changing the length of the bottom portion in the left-right direction. The length in the left-right direction is shortened and the opening is changed to a state narrowed in the left-right direction, and the length in the left-right direction is shortened by narrowing the opening in the left-right direction. The state may be changed to the same state as the length of the bottom portion in the left-right direction. A function of packaging bag,
The packaging bag has a first sheet member and a second sheet member as its constituent members,
The first sheet member includes a rectangular first sheet body and a pair of opposite sides of the first sheet body as a lower base side and a side shorter than the lower base side as an upper base side, respectively. A pair of trapezoidal trunk sheet bodies extending from a pair of opposing sides of the sheet body, and further extending from the upper base side of the trunk sheet body as the upper base side, the lower base side being the body part A reinforcing sheet body having a trapezoidal shape that is longer than the upper base side of the upper base side of the sheet body, and a first locking piece portion on each of the left and right oblique sides of each body sheet body via a first broken line portion. Have
The second sheet member includes a square second sheet body having a size equal to the square first sheet body, a second sheet body of the second sheet member, and the first sheet member. When the first sheet body of the first sheet body is overlaid, the opposing pair of sides of the second sheet body that are in a position orthogonal to the opposing pair of sides of the first sheet body is the base end thereof. One side extends from a pair of opposing sides of the second sheet body, and at least the longitudinal length of the second sheet body extends in the longitudinal direction in which the trapezoidal body sheet body of the first sheet member extends. Side body sheet body corresponding to the length of
When the second sheet member of the second sheet member and the first sheet member of the first sheet member are overlapped, a position orthogonal to a pair of opposing sides of the first sheet member The second sheet body is extended outwardly on both sides of the side body sheet body through a second fold line extending perpendicularly to each side from each end of the pair of opposing sides of the second sheet body. Each of the slide pieces from the position of each end of the pair of opposing sides of the second sheet body to each of the opposing sides of the second sheet body. The side body sheet body in the direction in which the side body body sheet body extends and has sides extending outwardly on both sides of the side body body sheet body. Having a second locking piece through
When the second sheet member of the second sheet member and the first sheet member of the first sheet member are superimposed on the side surface body sheet member of the second sheet member, the first Orthogonal to a pair of opposing sides of the second sheet body from the center of each of the opposing pair of sides of the second sheet body in a position orthogonal to the pair of opposing sides of the second sheet body A fourth fold line portion extending in the direction in which the side surface body sheet body extends is formed,
Forming the bottom portion of the packaging bag by superimposing the rectangular first sheet member of the first sheet member and the rectangular second sheet member of the second sheet member;
Each of the trapezoidal body sheet bodies of the first sheet member is bent and raised with its bottom base as a fold line portion to form the front body portion and the back body portion facing each other across the bottom portion. Further, the first locking piece portion is bent at the first broken line portion toward the inner space region surrounded by the opposed front body portion and the back body portion, and the reinforcing sheet body is Folding the upper base side toward the side of the internal space region as a fold line part, and sandwiching the bent first locking piece part, respectively, and overlapping the front body part or the back body part,
The left-side body part facing each other across the bottom part by raising the side body part sheet body of the second sheet member toward the side of the internal space region with one side corresponding to the base end as a broken line part Forming the right side torso,
The slide piece portion of the second sheet member is bent toward the inner space region via the second fold line portion, and the second locking piece portion is bent via the third fold line portion. Bent toward the opposite side of the internal space region,
The slide piece portion is inserted between the reinforcing sheet body folded so that the first locking piece portion is present therein and the front body portion or the back body portion, and the first The locking piece portion and the second locking piece portion are locked,
The front body portion and the back body portion made of the trapezoidal body portion sheet body of the first sheet member are centered on the respective bottom bases, together with the second fold line portion of the side surface body sheet body. When the fourth fold line portion is bent toward the inner space region side by rotating in the front-rear direction, both sides of the side body sheet member sandwiching the fourth fold line portion are concerned. The fourth fold line portion becomes a pleat portion when being bent toward the inner space region side, the opening is narrowed in the front-rear direction and closed, and the fourth fold line portion is formed in the inner space region. When returning from the state bent toward the side to the state where it is not bent, the opening is expanded in the front-rear direction and opened,
When the second sheet member and the first sheet member of the first sheet member are overlapped with each other, the side body sheet member of the second sheet member is opposed to the first sheet member. By rotating in the left-right direction around a pair of opposing sides of the second sheet body that is in a position orthogonal to the sides of the pair, the slide piece portion together with the side body sheet body is a second sheet. The reinforcing sheet body and the front torso or the back torso which are turned in the left-right direction around a pair of opposite sides of the body and folded so that the first locking piece exists inside and infested between parts, without changing the length in the horizontal direction of the bottom portion, the length in the horizontal direction of the opening, from the same state as the length in the horizontal direction of the bottom of the left-right direction The length is shortened and the opening is changed to a state narrowed in the left-right direction. And the length in the left-right direction can be changed from the above-described state where the opening is narrowed in the left-right direction to the same state as the length in the left-right direction of the bottom portion. Packaging bag. Since the first locking piece and the second locking piece engage with each other, the length in the left-right direction of the opening is reduced from the state in which the opening is narrowed in the left-right direction. The packaging bag according to claim 1, wherein opening in the left-right direction when the length is changed to the same length as the left-right direction is restricted . One end of the reinforcing sheet body is in contact with the left side body part and the right side body part and / or the second sheet body provided in the slide piece part of the second sheet member is opposed to the second sheet body. In a direction in which the side surface body sheet body extends in a direction extending obliquely with respect to the pair of opposing sides of the second sheet body from the positions of both ends of each side of the set, the side surface body sheet body The side extending in the outward direction on both sides and the bottom base of the trapezoidal trunk sheet body of each of the first sheet members are in contact with each other, so that the length in the left-right direction of the opening is the left-right direction of the bottom The closing of the opening in the left-right direction when the length in the left-right direction is shortened and the opening is narrowed in the left-right direction is controlled from the same state as the length of the opening. The packaging bag according to claim 1 or 2. The first hole through which the front body part, the reinforcing sheet body and the back body part and the reinforcing sheet body are inserted, and the second hole through which the left side body part and the right side body part are inserted. Provided at least two or more on the upper side of the opening, let the hand strap pass through the first hole and the second hole, and provided a locking tool for locking to the second hole at the end of the cord. The packaging bag according to any one of claims 1 to 3, characterized in that A notch that leaves one side is formed in one of the first sheet members to form an insertion piece, and a cut-out for inserting the insertion piece is formed in the other body sheet body. The packaging bag according to any one of claims 1 to 4, wherein the insertion piece is rotated about the one side and inserted into the cut end to serve as a closing tool for the opening .

Images