JP4268505B2 - Synthetic resin bag and manufacturing method thereof - Google Patents

Description

  The present invention relates to a synthetic resin bag body in which a plurality of bag portions are integrally formed and can be separately stored in each bag portion, and a method for manufacturing the same.

As such a synthetic resin bag body, a double-layered rectangular film is folded in half and closed on both sides with side seals, thereby providing a large bag portion, a small bag portion, a large bag and a small bag portion. And an intermediate bag part formed integrally therewith. Each of these bag portions is provided with a step at each opening edge of the large bag portion, the intermediate bag portion, and the small bag portion so that the opening operation of each bag portion can be easily performed (for example, Patent Document 1). reference).
Japanese Patent No. 3300809 (page 1-3, FIGS. 1 and 2)

  However, it is difficult to handle the above-mentioned film because the film constituting the bag body is very thin, and when the eyesight is low or the gripping power is weak like the elderly or children, the opening operation of the small bag part May not be able to be performed easily. In addition, repeated use may cause the opening end portion of the small bag portion to curl or be damaged, resulting in poor appearance.

  Therefore, the present invention can easily open the small bag portion with a simple structure, and prevents the opening edge of the small bag portion from being curled or damaged even after repeated use. An object of the present invention is to provide a synthetic resin bag body that can be used with good appearance over a long period of time.

In order to achieve the above object, the bag of the present invention has the side 6 opened, the first folded side 7 parallel to the side 6, the side 6, and the reference numerals used in FIGS. 8 to 12. In the rectangular synthetic resin bag formed by the two sides 8 and 9 that connect both ends of the first folded side 7, the first folded side 7 faces the first folded side 7 and is parallel to the one side 6 in the opposite direction. A second folded side 62 is formed and folded between the one side 6 and the first folded side 7 at a position where the first folded side 7 does not reach the one side 6, and the one side 6 and the second folded side The second folded side 62 is folded at a position where the second folded side 62 does not reach the one side 6, and a third folded side 63 is formed between the first folded side 7 and the second folded side 62. Support both sides 8 and 9 leading to the third folded side 63. From the first side 7 to the third folded side 63, the second bag part 3 from the first folded side 7 to the third folded side 63, and the second folded side 62. A third bag portion 61 extending to the third folded side 63 is provided, and a male and female bite type fastener 10 is provided on the inner side surface in the vicinity of one side 6 of the first bag portion 2.

Moreover, it is preferable to provide the coloring part which shows an opening part in the opening part of each bag part after the said 2nd bag part.

Further, in the bag manufacturing method of the present invention , a long flat film or tube-shaped film is folded along the longitudinal direction, and is provided in parallel with the first folded side 7 on one side and the first folded side 7. The front and back films 4a and 4b face each other at the intermediate portion of the second folded side 62 on the other side, and one side formed by the facing films 4a and 4b parallel to the first folded side 7 and the second folded side 62 An opening 6 is provided on the inner surface in the vicinity of the side 6, and a male and female bite type fastener 10 is provided along the longitudinal direction of the film 4, and the gap between the side 6 and the first folded side 7 is the first side. The folded side 7 is folded at a position where it does not reach the one side 6, and is folded between the one side 6 and the second folded side 62 at a position where the second folded side 62 does not reach the one side 6. A third folded side 63 is formed between the first folded side 7 and the second folded side 62, and both sides 8 and 9 from the one side 6 to the third folded side 63 are closed with side seals. And a first bag portion 2 extending from the one side 6 to the third folded side 63, and a second bag portion 3 extending from the first folded side 7 to the third folded side 63. The third bag portion 61 extending from the second folded side 62 to the third folded side 63 is integrally formed. Moreover, it is preferable to provide the coloring part which shows an opening part in the opening part of each bag part after the said 2nd bag part .

  According to the present invention, an opening operation of a small bag portion can be easily performed with a simple structure. Moreover, since a small bag part can be formed firmly, even if it uses repeatedly, it can prevent that the opening edge of a small bag part curls or damages, and can use it with good appearance over a long period of time. It becomes like this.

First, a synthetic resin bag body according to a reference example and a manufacturing method thereof will be described in detail with reference to FIGS. FIGS. 1 to 4 show a first reference example of a synthetic resin bag body and an outline of the manufacturing method thereof. As shown in FIGS. 1 and 2, the bag body 1 has an open side 6 and The first folded side 7 parallel to the one side 6 is folded between the one side 6 and the first folded side 7 at a position where the first folded side 7 does not reach the one side 6, and the one side 6 and A second folded side 12 parallel to the first folded side 7 is formed, both sides 8 and 9 extending from the one side 6 to the second folded side 12 are closed with side seals, and the second side 6 and the second side are closed. A first bag portion 2 reaching the folding side 12 and a second bag portion 3 extending from the first folding side 7 to the second folding side 12 are provided. A male and female bite type fastener 10 (male mold 10 a and female mold 10 b) is provided on the inner side surface in the vicinity of one side 6 of the first bag portion 2, and a first folded portion is provided at the opening of the second bag portion 3. In parallel with the side 7, a colored portion 11 made of a blue line is provided. In addition, even if the side 6 to open is an aspect of the front and back films 4a and 4b in an open state as shown in the figure, or the upper end of the front and back films 4a and 4b is heat sealed, the film 4 is folded back. It may be an embodiment. In the case where the upper ends of the front and back films 4a and 4b are heat-sealed or the film 4 is folded, tearing means by perforation or thin wire for opening is provided on one side 6 so that it can be easily opened. It is desirable.

  The bag 1 has a single-layer film made of synthetic resin such as polyethylene or polypropylene, a multilayer film of these synthetic resins, a laminated film of these synthetic resins and aluminum foil, paper, or the like. A vapor-deposited film of resin and aluminum or silica is used, but is not limited thereto. These single-layer to multi-layer films are provided in a flat shape or a tube shape.

  The manufacturing method of the bag 1 will be described with reference to FIGS. 3 and 4. First, a long flat or tube-shaped film is folded along the longitudinal direction to form the first folded side 7 and the front and back films. 4a and 4b face each other. The other side parallel to the first folded side 7 is an open side 6, and a male and female bite type fastener 10 is provided along the longitudinal direction of the film 4 on the inner side surface in the vicinity of the side 6. Then, after facing the films 4a and 4b, the first folded side 7 is folded between the one side 6 and the first folded side 7 at a position where the first folded side 7 does not reach the one side 6 and is parallel to the one side 6 A second folded side 12 is formed. Next, side sealing is performed at predetermined intervals in the orthogonal direction of the film 4 from the one side 6 to the second folded side 12 to block both sides from the one side 6 to the second folded side 12 and individually. Cut into bags. Accordingly, the first bag portion 2 having a depth extending from the one side 6 to the second folded side 12 and the second bag portion 3 having a depth extending from the first folded side 7 to the second folded side 12 are formed in the bag body 1. And are integrally formed. In the vicinity of the first folded side 7 of the film 4a, it is desirable to provide a colored portion 11 made of, for example, a red line in parallel with the first folded side 7.

  In addition, when using a tube-shaped film, you may add the process of opening the film 4 to an axial direction in the other side parallel to the 1st folding | turning side 7 to the said manufacturing process.

  In the bag body 1 formed in this way, the opening portion of the second bag portion 3 is formed by the first folded side 7 in which the film is doubled, so that it is rounded and easy to catch, and the colored portion 11 By being given, opening operation of the 2nd bag part 3 can be performed easily. Moreover, since the synthetic resin film is doubled on the front surface of the second bag portion 3, the opening edge is not curled or damaged even if it is repeatedly used.

  Furthermore, air is introduced into the portion of the front surface of the second bag portion 3 where the synthetic resin film is doubled from the first bag portion 2, or the first bag portion 2 An air layer is formed by positively blowing air from the opening, and the articles stored in the first bag portion 2 and the second bag portion 3 can be protected by this air layer. The first bag portion 2 protruding from the upper portion of the second bag portion 3 is folded back to the second bag portion 3 side and fastened with a label or tape, thereby preventing the articles stored in the second bag portion 3 from dropping off. You can also.

FIG. 5 is a cross-sectional view showing a second reference example of the synthetic resin bag body of the reference example. In the following reference examples and form examples, the same parts as those in the first reference example are denoted by the same reference numerals, and detailed description thereof is omitted. The bag body 30 is provided with a third bag portion 31 on the opposite side of the second bag portion 3 across the first bag portion 2. The third bag portion 31 folds the second folded side 12 in a position not reaching the one side 6 to the side opposite to the second bag portion 3 to form a third folded side 32, and from the one side 6 It is formed by closing both sides 8 and 9 reaching the third folded side 32 with side seals.

  Thereby, the bag body 30 has a first bag portion 2 having a depth from the one side 6 to the third folding side 32 and a third folding side from the first folding side 7 to the film 4b side of the first bag portion 2. An opening is formed between the second folded side 12 and the film 4a on the second bag part 3 having a depth reaching the side 32 and on the film 4a side of the first bag part 2 opposite to the second bag part 3. And the 3rd bag part 31 of the depth from the 2nd folding side 12 to the 3rd folding side 32 is provided.

FIG. 6 is a cross-sectional view showing a third reference example of the synthetic resin bag body of the reference example, and the bag body 40 is provided with a third bag portion 33 on the second bag portion 3 side. The third bag part 33 folds the second folded side 12 to the second bag part 3 side at a position not reaching the first folded side 7 to form a third folded side 32, It is formed by closing both sides 8 and 9 reaching the third folded side 32 with side seals.

  As a result, the bag body 40 has a first bag portion 2 having a depth from the one side 6 to the third folding side 32 and a third folding side from the first folding side 7 to the film 4b side of the first bag portion 2. The second bag part 3 having a depth reaching the side 32, the film 4 a of the second bag part 3, and the second folded side 12 are opened, and the second folded side 12 reaches the third folded side 32. A depth third bag portion 33 is provided.

FIG. 7 is a sectional view showing a fourth reference example of the synthetic resin bag body of the reference example, and the bag body 50 is provided with a fourth bag portion 41 on the third bag portion 33 side of the third reference example. It is. The fourth bag portion 41 folds the third folded side 32 to the third bag portion 33 side at a position not reaching the second folded side 12 to form a fourth folded side 42, and from the one side 6 It is formed by closing both side portions 8 and 9 reaching the fourth folded side 42 with side seals.

  As a result, the bag body 50 has a first bag portion 2 having a depth from the one side 6 to the fourth folding side 42, and the first folding side 7 to the fourth folding side on the film 4 b side of the first bag portion 2. The second bag portion 3 having a depth reaching the side 42, the film 4 a of the second bag portion 3, and the second folded side 12 are opened, and the second folded side 12 reaches the fourth folded side 42. A third bag portion 33 having a depth, a gap between the film 4a of the third bag portion 33 and the third folded side 32, and a depth from the third folded side 32 to the fourth folded side 42 are provided. Four bag portions 51 are provided.

Contrary to the fourth reference example, it is also possible to provide a fourth bag portion 41 on the third bag portion 31 side of the second reference example. In this case, the third folded side 32 is connected to the second folding side 32. The fourth folded side 42 is formed by folding back to the third bag portion 31 side at a position not reaching the first folded side 12 of the reference example, and both side portions 8 and 9 extending from the one side 6 to the fourth folded side 42 are It is formed by closing with a side seal.

  It is also possible to fold the fourth folded side 42 toward the third bag portion 31 or the third bag portion 33 to provide a fifth bag portion, which is repeated to increase the number of bag portions. When provided, the outermost folded portion is folded at a position not reaching the previous folded portion to form a final folded portion, and both side portions from the side 6 to the final folded portion are used as side seals. A plurality of bag portions are provided by closing them.

In producing the engagement Ru bag in its application to the second reference example through fourth reference example of a synthetic resin bag of the reference example is basically the same as the first reference example, i.e., the length A first flat side 7 is formed by folding a flat film or a tube-shaped film along the longitudinal direction, and one side 6 that opens parallel to the first folded side 7 and opens to the other side is formed. The film 4a, 4b is faced, and a male and female bite type fastener 10 is provided along the longitudinal direction of the film 4 on the inner side surface in the vicinity of the side 6, and after the films 4a, 4b are faced, The first folded side 7 is folded between the first folded side 7 at a position where the first folded side 7 does not reach the one side 6 to form the one side 6 and the second folded side 12 parallel to the first folded side 7; With respect to the second reference example The second folded side 12 is folded back to the opposite side of the second bag portion 3 at a position not reaching the one side 6 to form a third folded side 32, and from the one side 6 to the third folded side 32. Providing a step of side-sealing at a predetermined interval in the orthogonal direction of the film 4 to be closed, closing both sides 8 and 9 from the one side 6 to the third folded side 32 and cutting into individual bags. Manufactured by.

Regarding the third reference example, the second folded side 12 is folded back to the second bag portion 3 side at a position not reaching the one side 6 to form the third folded side 32, and the third folded side is formed from the one side 6. Side sealing at a predetermined interval in the orthogonal direction of the film 4 reaching the side 32 to close both side sides 8 and 9 from the one side 6 to the third folded side 32 and cut into individual bags. In the fourth reference example, the folded side formed on the outermost side is folded back at a position not reaching the previous folded side to form the final folded side, and the final folded from the side 6 The present invention bag body which has a some bag part is obtained by providing the official residence which obstruct | occludes the both sides which reach a side with a side seal.

Next, the bag according to the present invention will be described with reference to FIGS. 8 to 11 show a first embodiment, the bag 60, as shown in FIG. 8, a first bag portion 2, a second bag portion 3 on one side of said bag portion 2 The third bag portion 61 is provided on the other side. The bag body 60 is manufactured by folding a long flat film or tube-shaped film along the longitudinal direction, and providing a first folded side 7 on one side and the first folded side 7 in parallel. 9 facing the front and back films 4a and 4b in the state as shown in FIG. 9 and in parallel with the first folded side 7 and the second folded side 62. The end portions of the films 4a and 4b are defined as one side 6 that opens, and a male and female bite type fastener 10 is provided along the longitudinal direction of the film 4 on the inner surface in the vicinity of the side 6.

  Then, as shown in FIG. 10, the first folded side 7 is folded between the one side 6 and the first folded side 7 at a position where the first folded side 7 does not reach the one side 6. The second folded side 62 is folded between the folded side 62 at a position where the second folded side 62 does not reach the one side 6, and a third folded side 63 is formed between the first folded side 7 and the second folded side 62. To do.

  Next, both sides 8 and 9 from the one side 6 to the third folded side 63 are side-sealed to close and cut into individual bags, and as shown in FIGS. 10 and 11, the bag 60 The first bag portion 2 having a depth from the one side 6 to the third folded side 63, the second bag portion 3 having a depth from the first folded side 7 to the third folded side 63, and a second folded portion. A third bag portion having a depth from the side 62 to the third folded side 63 is integrally formed at the same depth as the second bag portion 2. It is desirable to provide the colored portions 11 in the vicinity of the first folded side 7 and the second folded side 62, respectively.

FIG. 12 shows a second embodiment example, in which the depths of the second bag portion 3 and the third bag portion 61, which are the same depth as in the first embodiment example, are reduced. In FIG. 12, the second bag portion 3 is shallow and the third bag portion 61 is configured deeply, but the second bag portion 3 may be configured deeply and the third bag portion 61 may be configured shallowly. The production of the bag of the second embodiment is also basically the same as the first embodiment, the same dimension in the first embodiment from the side 6 to the first folded side 7, and from the side 6 It can be easily manufactured by adjusting the length to the second folded side 62 by adjusting the length. In addition, when using a tube-shaped film, you may add the process of opening the film 4 to an axial direction similarly to the case where the bag body of the said reference example is manufactured to the said manufacturing process.

In each reference example and each embodiment described above, a colored portion that clearly indicates the opening portion is provided in the opening portion of each bag portion after the second bag portion, but this colored portion only indicates the opening portion. In the manufacturing process, it is easy to grasp the positional relationship between the colored parts, or preferably the positional relationship with the same colored fastener, and the positional relationship is set appropriately so that the shape is constant. It is useful for manufacturing a product that has been made into a product.

Perspective view of a synthetic resin bag of reference example Same front view III-III sectional view of FIG. The perspective view explaining the process which makes the film which concerns on the manufacturing method of the synthetic resin bag body of a reference example face, forms the 1st, 2nd folding | turning side, and forms each bag body Sectional drawing of the 2nd form example of the synthetic resin bag body of a reference example Sectional view of the bag of the third embodiment of the synthetic resin bag of the reference example Sectional view of the bag of the fourth embodiment of the synthetic resin bag of the reference example The partially broken perspective view of the 1st form example of the bag body of this invention Sectional drawing of the state which formed the 1st return side and the 2nd return side Sectional drawing of the state which turned up the 1st return side and the 2nd return side, respectively Sectional drawing of the state which formed the sectional view side of the 1st example of a bag of the present invention Sectional drawing of the bag body which integrally formed the 2nd bag part and 3rd bag part from which the depth in the bag body of this invention differs

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bag body of a reference example , 2 ... 1st bag part, 3 ... 2nd bag part, 4 ... Film, 6 ... One side, 7 ... 1st folding | turning side, 8, 9 ... Both sides part, 10 ... Fastener, 11 ... colored portion, 12 ... second folded edge of the bag body of the reference example 31, 33 ... third bag of the bag body of reference example 32: third folding edge of the bag body of reference example 41: reference example bag the fourth bag portion of the body, 42 ... wrapping the sides of the bag body of the fourth reference example, 60 ... bag body of the present invention, 61 ... third bag of the bag of the present invention, the bag body 62 ... present invention first 2 folded sides, 63 ... third folded side of the bag of the present invention

Claims (4)

One side (6) that opens, a first folded side (7) that is parallel to the one side (6), and both sides that connect both ends of the one side (6) and the first folded side (7) (8, 9) forming a second folded side (62) parallel to the one side (6) in the opposite direction opposite to the first folded side (7), between said side (6) and said first folding edge (7), wherein together to return the folding at the location first folded side (7) is not reached the one side (6), wherein a side (6) first 2 between the folded-back side (62) at a position where the second folded-back side (62) does not reach the one side (6), and between the first folded-back side (7) and the second folded-back side (62). the third form a folded edge (63), both sides (8 extending from said one side (6) to the third folded edge (63) 9) closes the at side seal, the first bag portion extending from said one side (6) to the third folded edge (63) and (2), the third folded edge of the first folding edge (7) (63) A second bag portion (3) that extends to the third bag portion (61) that extends from the second folded side (62) to the third folded side (63), and one side (6) of the first bag portion (2) ) A synthetic resin bag characterized in that a male and female bite type fastener (10) is provided on the inner side surface in the vicinity. The synthetic resin bag according to claim 1, wherein each of the bag portions after the second bag portion (3) is provided with a colored portion (11) that clearly shows the opening portion in the opening portion. body. A long flat film or tube-shaped film is folded along the longitudinal direction, and the first folded side (7) on one side and the second folded side on the other side provided in parallel with the first folded side (7) By the facing films (4a, 4b) parallel to the first folded side (7) and the second folded side (62) with the front and back films (4a, 4b) facing each other at the middle part of the side (62) One side (6) opening one side is provided, and a male and female bite type fastener (10) is provided along the longitudinal direction of the film (4) on the inner surface in the vicinity of the one side (6), and the one side (6) and the first side The first folded side (7) is folded at a position where the first folded side (7) does not reach the one side (6), and between the one side (6) and the second folded side (62). For the second folded side (62 Is folded at a position not reaching the one side (6), a third folded side (63) is formed between the first folded side (7) and the second folded side (62), and the one side (6) The side sides (8, 9) from the first side (6) to the third folded side (63) are closed with side seals and cut into individual bags, and the one side (6) to the third folded side (63 ), The second bag part (3) from the first folded side (7) to the third folded side (63), and the second folded side (62) to the third folded side. (63) third bag portion (61) and a method for manufacturing a synthetic resin bag member you and forming integrally leading to. 4. The synthetic resin bag according to claim 3, wherein each of the bag portions after the second bag portion (3) is provided with a colored portion (11) that clearly indicates the opening portion in the opening portion thereof. 5. Body manufacturing method .

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