JP2013144572A - Bag opening structure with sealing type zipper and continuous bag body with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a bag opening structure excellent in appearance after storing and without leakage due to engaging failure by effectively and surely carrying out storing operation and sealing operation respectively by avoiding labor of opening operation of an engaging opening part and sticking and hooking of storing matters to the inside (inner face of a zipper belt or a zipper structure) of the engaging opening.SOLUTION: A pair of zipper belts 31, 32 and an intermediate sheet piece 4 fixed to either one of the pair of zipper belts 31, 32 are arranged between two sheet 11, 12 constituted by connecting both side part themselves overlapped each other. One zipper belt 32/31 fixed to the intermediate sheet piece 4 and one bag sheet 11/12 facing the outer face sides of the same are extendedly formed upward from the bag opening more than the zipper structure 21/22 respectively, and a sealing area 5A sealing after storing contents is arranged in each of opposing faces extendedly formed.

Description

  The present invention relates to a bag mouth structure in which a bag mouth is sealed after the contents are accommodated in the bag, and particularly, a bag that can be re-sealed after sealing. Further, the present invention relates to a continuous bag body in which a plurality of units before sealing, each having the bag mouth structure, are connected.

  Conventionally, as a packaging bag with a zipper provided with a take-out opening that can be resealed separately from the filling opening, a knob that is bent outwardly by two parallel folding lines on one main body film In the vicinity of the fold line inside the knob part, a pre-opening part that tears the knob part in the lateral direction is provided, and on the inside of the main body film having the knob part, a narrow-width tape having an engaging protrusion is thermally fused. A wide tape having an engagement recess on the inside of the narrow tape is heat-sealed with the main body film, and the narrow tape and the wide tape are re-engaged by an occlusion device comprising an engagement protrusion and an engagement recess provided on the inside. What was fitted so that sealing was possible is disclosed (refer patent document 1).

  Conventionally, as a method of manufacturing a storage bag with a zipper that can be opened and closed after enclosing a granular material such as rice, a male part and a female part are attached to and detached from each other between two long plastic sheets. A zipper consisting of two free zipper halves is placed in the width direction of the sheet body with a predetermined interval between the two long sheet bodies with the male part and female part of the zipper closed. A zipper insertion step, a zipper fusion step of fusing the zipper half to the sheet body while pressing a hot plate as a receiving member of at least one of the first guide member and the second guide member, and the zipper After the fusing step, by feeding the sheet body in the longitudinal direction, the sheet body is guided by the second guide member on the downstream side to open the zipper, and the opened zipper Upper b Method having a bottom fusion step of fusing the vicinity of the zipper fusion part with clamping pressure by closing is disclosed in Le and a lower roll (see Patent Document 2). According to this manufacturing method, the zipper can be fused in the width direction of the long sheet body while intermittently feeding the long sheet body. Therefore, after that, it is said that the contents can be efficiently sealed by the automatic sealing device. In particular, in the second embodiment of the storage bag, a fusion part and a non-fusion part that allows ventilation inside and outside the storage bag are alternately provided in a portion where the sheet body and the zipper half overlap, The fused part is the throat part.

  These storage bags with zipper sell the storage bags in the storage state in which the upper end of the bag mouth with the zipper is sealed by heat sealing (heat seal) after storing the contents in the storage bag. The purchased user leaves the zipper out of the bag mouth of the storage bag in the stowed state, separates and opens only the heat-sealing (heat seal) portion, and after opening, the bag mouth can be re-sealed with the zipper.

JP 2000-219252 A Japanese Patent No. 4495737

  However, each of the above conventional storage bags opens the mouth part with the zipper to accommodate the contents, and seals (seal) the upper part of the mouth part by heat fusion. When the contents are accommodated, a step of opening the mouth portion locked by the zipper is required. For this reason, in general-purpose storage devices such as packer machines, opening work for unlocking the zipper for each storage unit becomes troublesome, or a special mechanical mechanism for unlocking and opening the zipper is required, Containment work could not be performed efficiently.

  Further, in the step of accommodating and sealing the liquid or granular contents from the unlocked zippered mouth portion, the contents adhere to the zipper structure or the heat fusion portion in the retaining mouth portion, and the appearance is It may become contaminated or may remain in the zipper structure or the heat-sealed portion. Such a state is lacking in the appearance of the locking mouth portion after being accommodated, and may cause poor sealing of the sealing portion and poor locking of the zipper structure. For this reason, the sealing operation could not be performed efficiently or reliably.

  Therefore, the present invention avoids the trouble of opening work of the locking port part and the attachment or catching of the contents in the locking port part (the inner surface of the fastener band or the fastener structure) to efficiently perform the storing work and the sealing work. It is another object of the present invention to provide a bag mouth structure that is performed reliably or reliably, and that has a good appearance after sealing and that does not leak due to poor locking.

In order to solve the above problems, the present invention adopts the following configurations (1) to (7).
(1) The sealed zipper bag structure of the present invention is
In the bag mouth formed by connecting both sides of the two stacked bag sheets 11/12 to each other, between the respective bag sheets 11/12,
A pair of fastener bands 31 and 32 having fastener structures 21 and 22 that can be locked to each other and extending in the width direction of the mouth, and an intermediate sheet piece 4 fixed to one of the pair of fastener bands 31 and 32 Provided,
After the contents are contained in the bag, the sheets over the entire mouth width of the bag mouth are sealed at the predetermined sealing region 5A facing each other,
The intermediate sheet piece 4 fixed to one of the fastener bands 32/31 and the one bag sheet 11/12 facing the outer surface side of the one fastener band 32/31 are respectively fixed. It is formed to extend above the bag mouth from the fastener structure 21/22 of the fastener band 31/32.
The other fastener band 31/32 that is not fixed to the intermediate sheet piece 4 is fused and fixed to the inner surface of one of the other bag sheets 11/12 facing the outer surface side thereof,
The sealing regions 5 </ b> A for performing sealing after the contents are accommodated are provided on each of the extended opposing surfaces.

  According to the above configuration, the pair of fastener bands are respectively fixed to the other bag sheet and the intermediate sheet piece 4, and after the contents are accommodated, the opposing surfaces of the intermediate sheet piece 4 and the one bag sheet are formed. It will be sealed as a sealing area. And if it is such a structure, before sealing, in addition to the locking opening part between a pair of fastener belts, the opening part only before sealing between the intermediate sheet piece 4 and one bag sheet The opening can be used to store the contents. By using only the release port part that is different from the locking port part, the opening work of the locking port part, and the attachment and catching of the contents in the locking port part (the inner surface of the fastener band or the fastener structure) can be prevented. It can be avoided. For this reason, the storing operation and the sealing operation are performed efficiently and reliably, respectively, so that the appearance after storing is good, and a bag that does not leak due to a poor locking of the fastener structure can be configured.

(2) In the bag mouth structure, the intermediate sheet piece 4 and the one and other bag sheets 11/12 are both formed to extend from the sealing region to the bag mouth upper side,
The other bag sheet and the intermediate sheet piece 4 are connected over the entire width at the extension forming destination,
And at least any bag sheet outer surface above the sealing region is subjected to an opening indication OE for opening after sealing,
After the contents are contained and sealed in the sealing area, the one and the other bag sheet and the intermediate sheet piece 4 are opened in the mouth width direction according to the opening indication, and are opened and cut. It is preferable to form an opening that can be resealed by locking.

(3) In any one of the bag mouth structures, the intermediate sheet piece 4 and the one and the other bag sheets 11/12 are both formed to extend from the sealing region to the bag mouth,
Of these, the opposing sheets / sheet pieces are respectively connected over the entire width at the extension forming destination,
Among these, at least between the intermediate sheet piece 4 and the other bag sheet is provided with one or a plurality of deaeration holes HO communicating with the outside of the bag at the sheet surface of the extension forming portion or the connecting portion between the sheets. Is preferred.

(4) In the sealing-type zippered bag mouth structure according to any one of the above, the sealing between the intermediate sheet piece 4 and the one bag sheet in the sealing region is by thermal fusion,
Insulating treatment structure for avoiding heat fusion over the entire width direction in advance in the portion overlapping at least one of the facing surfaces of the intermediate sheet piece 4 and the other bag sheet and the sealing region Is preferably applied.

  The heat insulation treatment structure here refers to forming a layer of a heat insulating agent (heat insulating ink, etc.) on at least one of the facing surfaces of the intermediate sheet piece 4 and the other bag sheet, attaching a heat insulating material, Includes any intervention. In the examples described later, a tape made of a heat insulating material is attached only to one side of the facing surfaces of the intermediate sheet piece 4 and the other bag sheet.

  In the sealing region, three sheets of one bag sheet, the other bag sheet, and the intermediate sheet piece 4 therebetween overlap. Insulation avoidance mechanism that prevents the heat of fusion by the hot plate from being transmitted to the other bag sheet when trying to heat-fuse between two of these (one bag sheet and intermediate sheet piece 4) from the outside Is separately required for fusion equipment. On the other hand, with the above configuration, among the three sheets that overlap as the sealing region, the anti-sealing treatment is performed between the opposing surfaces that are not sealed, so that the three sheets are overlapped without using a separate heat insulation avoidance mechanism. It becomes possible to heat-seal only between the opposing surfaces on one side. As a result, the sealing work after the housing can be efficiently performed without using extra labor and special equipment.

(5) In any one of the above-mentioned sealing-type zippered bag mouth structures, the heat-insulating structure has a heat resistance with a width that overlaps the sealing region on the surface of the intermediate sheet piece 4 facing the other bag sheet. The tape is affixed across the mouth width direction,
Of the heat-resistant tape, a tape end portion below the bag mouth is provided with a non-attached region that overlaps with the intermediate sheet piece 4 while being not attached,
The intermediate sheet piece 4 in the non-attachment region is provided with one or a plurality of vent holes HU / H communicating with the inside of the bag,
It is preferable that a deaeration hole HO (HO1) / H communicating with the outside of the bag is provided in the other bag sheet above the bag mouth from the sealing region.

  According to the said structure, the tape edge part which overlapped with the intermediate | middle sheet piece 4 became a cover part of the vent hole HU, the vent hole HU opened by opening the cover part, and the accommodation area | region of a bag is more than a fastener belt | band | zone. The air is ventilated into one side space (for example, the upper left sheet portion in FIG. 11) of the bag mouth sandwiched between the other bag sheet and the intermediate sheet piece 4 at the upper part. The one side space of the bag mouth communicates with the outside through a deaeration hole HO provided in the other bag sheet, and therefore the bag storage area communicates with the outside through the one side space of the bag mouth opened and closed. It becomes. For this reason, contaminants, such as dust and water, do not easily enter the storage area from the outside, and the storage state of the storage object can be kept hygienic. A bag having this configuration corresponds to, for example, Example 3 described later.

(6) The continuous bag body of the present invention has the bag mouth structure described in any one of the above in the upper part of each bag, and a plurality of bag units are vertically connected with a cut line CL in the width direction near the bag mouth as a boundary. A continuous bag,
The intermediate sheet piece 4 constituting the bag opening structure of one bag unit is folded after extending further upward than the extending portion, and both folded outer surfaces are the inner surfaces of the two bag sheets. It is characterized by comprising the bag bottom structure of the bag mouth structure of another adjoining bag unit by fuse | melting.

  The continuous bag body is cut for each bag unit by being cut at the cut line CL. At this time, the bag bottom of each bag unit is configured by a further upwardly extending piece of the intermediate sheet piece 4. And only by cutting the continuous bag body along the cut line CL in the width direction, a bag bottom structure with a gusset bottom having the intermediate sheet piece 4 as a gusset bottom is formed at one cut destination, and the other cut destination In addition, a bag structure having an opening opening with the intermediate sheet piece 4 and one of the bag sheets as an open end is formed. By integrating the intermediate sheet piece 4, folding at the extension destination, and surface fusion of the folded part, the lower bag bag structure and the upper bag bag bottom structure that are connected in the vertical direction are integrated. Therefore, each bag after being cut at the cut line CL can be obtained as a relatively strong structure.

(7) Or the continuous bag body of this invention has the bag mouth structure in any one of the above-mentioned in the upper part of each bag, and a plurality of bag units are formed with a vertical cut line CL along the vicinity of both sides of the bag as a boundary. A laterally connected continuous bag,
The bag bottom part of each bag unit is connected by the connection part of the width direction of the bag sheet | seats which were piled up, and it has a folding side 4F of the width direction, and is bend | folded and formed.

  The present invention takes the above-described means, and the bag is partitioned into two by an intermediate sheet piece 4 connected to one side of the fastener structure, and the sealing opening and the sealing portion are cut in the contents storage or sealing process. The fastener structure opening that can be re-sealed later is separately provided. Accordingly, the contents are accommodated and sealed using only the sealing port without using the fastener structure port, so that the trouble of opening the locking port portion and the inside of the locking port portion (the inner surface of the fastener band or the fastener) It is possible to avoid adhesion or catching of the contents to the structure. In addition, the storage operation and the sealing operation can be performed efficiently or reliably, the appearance after sealing is good, and the bag mouth structure in which there is no leakage due to poor locking, or the continuous bag body provided with this It was decided to provide.

The front view of the 2 section half part of the continuous bag body (connected state) of Example 1. FIG. The front view of the state which cut | disconnected the continuous bag body of Example 1 with the cut line CL. The principal part longitudinal cross-sectional view near the connection part of the continuous bag body (connection state) of FIG. The principal part center longitudinal cross-sectional view which shows the accommodation state before sealing of the bag mouth structure of Example 1. FIG. The principal part longitudinal cross-sectional view which shows the state after sealing of the bag mouth structure of Example 1. FIG. The principal part center longitudinal cross-sectional view which shows the opening state which cut | disconnected the bag mouth structure of Example 1 with the open line. The front view of the state which cut | disconnected the continuous bag body of Example 2 with the cut line CL. The principal part longitudinal cross-sectional view near the connection part of the continuous bag body (connection state) of Example 2. FIG. The front view of the state which cut | disconnected the continuous bag body of Example 3 with the cut line CL. The principal part longitudinal cross-sectional view near the connection part of the continuous bag body (connection state) of Example 3. FIG. The principal part center longitudinal cross-sectional view which shows the accommodation state before sealing of the bag mouth structure of Example 3. FIG. The front view of the 3 section surplus part of the continuous bag body (connection state) of Example 4. FIG. The expansion perspective view of the center fracture | rupture part which shows the structure of the bag of Example 4. FIG. The perspective view which shows the state after sealing of the bag of Example 4. FIG. The principal part longitudinal cross-sectional view which shows the accommodation state before sealing of the accommodation bag which has a bag mouth structure of Example 5. FIG.

  As the best mode for carrying out the present invention, Example 1 (FIGS. 1 to 6), Example 2 (FIGS. 7 and 8), Example 3 (FIGS. 10 and 11), and Example 4 (FIG. 12 to FIG. 14) and a diagram shown as Example 5 (FIG. 15). In any of the embodiments, the bag body of the present invention forms a three-way storage portion excluding the upper portion by the bag bottom and the bag side of the two rectangular bag sheets 11/12 stacked on each other, and is bonded to the upper portion. It has a bag mouth structure that can be sealed by fusion. In addition, the bag body of each embodiment has a front state composed of a continuous bag body in which a plurality of bags are continuously connected to either the vertical direction or the horizontal direction with a cut line CL along the upper and lower sides or the left and right sides as a boundary. It is assumed that the sheet is separated by a cut line CL at the time of accommodation of contents and sealing of the bag mouth, and separated into single sheets. Moreover, it does not have the front state which consists of a continuous bag body, and may consist of the bag body by which the sheet | seat unit was formed for every bag.

  In addition, each of the bag mouth structures of the first to fourth embodiments of the present invention has a pair of fastener bands 31, 32 having fastener structures 21, 22 that can be locked to each other and extending in the mouth width direction, and a pair of fasteners. An intermediate sheet piece 4 fixed to one of the belts 31 and 32 is provided, and the mouth portion is partitioned into two space portions in the overlapping direction of the bag sheets 11/12 by the intermediate sheet piece 4 (FIG. 3). -FIG. 5 etc.).

(Intermediate sheet piece 4)
Here, both the intermediate sheet and the fastener band have the same length in the width direction of the bag mouth, and are fixed to each other and sandwiched between the bag sheets 11 and 12. The intermediate sheet piece 4 has an extending portion that extends to the upper side of the bag mouth from the fastener structure of the surface-fused fastener belt over the entire mouth width of the bag mouth. The intermediate sheet piece 4 is fixed to one fastener band 31 located on the inner side of the pair of fastener bands 31/32, and is formed to extend upward from the fixing portion to the bag mouth. This fixing includes both heat fusion between molten materials and adhesion by an adhesive. Moreover, the band width of the one fastener band 31 located inside in the cross-sectional view may be previously extended to one side, and the intermediate sheet piece 4 may be fixed to this extended formation part. In the case of heat fusion or adhesion, the intermediate sheet piece 4 may be divided and bonded to the upper half and the lower half of the outer surface of the fastener band except for the fastener structures 21 and 22 (Examples 1 and 2). 3 to 6, 8), or only the upper half of the inner surface of one fastener band 31 excluding the fastener structure 21 portion (Example 3 and FIGS. 10 to 11). The upper part of the intermediate sheet piece 4 may be connected and fixed to the upper extension part of another bag sheet fixed to the other fastener band 32 below the cut line CL. In this case, even after cutting at the cut line CL, before opening at the open line OL, entry of contaminants from the outside can be prevented even if the fastener band is accidentally opened.

  Of the two partitions, the space formed between one bag sheet and the intermediate sheet that does not have a fastener structure (the right side in FIGS. 3 to 5, etc.) accommodates the contents in the bag. It is a sealing port (accommodating port) used when performing (a passage part of the arrow of Drawing 4). In the sealing port (accommodating port), after the contents are stored, sheets facing each other over the entire width of the bag port are sealed in a predetermined sealing region 5A. The bag body of the present invention is in a stored state in which the contents are stored and sealed in the bag by sealing the sealing opening in the sealing region 5A. Further, the sealing area 5A is in an area near the upper portion of the fastener opening of the fastener band, and as an external display of the area, a fusion display 5E by printing is provided on the outer surface of the other bag sheet 12. Applied. Here, the term “sealing” means that the inner surfaces of the sheets are bonded and sealed together by heat sealing (heat sealing), and at least bonding with an adhesive interposed between the sheets or heat melting. It includes any of heat-sealing (heat sealing) between sheets made of a dressing.

  Moreover, the space part formed between the other bag sheet | seat which has the fastener structure which can be latched in the opposing direction, and an intermediate sheet (left side of FIGS. 3-5 etc.) among the two divided, It is an opening for re-sealing and using the contents in the bag after sealing and sealing. In the opening, the other bag sheet and the intermediate sheet are formed by extending portions of the fastener bands 31 and 32 extending upward from the heat-sealed portion. Each extension formation part of the opening of Examples 1-4 is connected by the heat fusion or integral formation in the full width direction in the upper end, and is not opened upward at the time of sealing (FIGS. 4, 5, and 11) . Here, the term “joint” includes any form of integral formation by bending each of the continuously formed sheets, and joint formation by thermal fusion (heat sealing) or adhesion between sheets made of a heat fusion material. . Normally, each storage bag in the state shown in FIG. 14 is a storage state in which the extension forming portions of the sheets of the opening are connected to each other and the extension forming portions of the sheets of the storage opening are sealed. Sold over-the-counter.

  This opening can be opened for the first time after accommodating the contents in the bag and sealing the previous sealing opening by separating the upper end portion of the bag opening along the open line OL above the heat fusion part. (FIG. 6). After separation at the open line OL, the fastener structures can be unlocked to be opened, and re-engaged to be resealed. The user who purchased the storage bag opens the upper part of the bag opening of the storage bag in the stored state by separating the upper end part from the open line above the fusion area, and then opens it again with the zipper band. Take out and re-contain the item. Hereinafter, each configuration of the embodiment will be described in detail.

  The continuous bag body of Example 1 shown in FIGS. 1 to 4 has the following bag mouth structure at the top of each bag, and a plurality of bag units are vertically connected with a cut line CL in the width direction near the bag mouth as a boundary. And the intermediate sheet piece 4 constituting the bag mouth structure of one bag unit is further folded upward at the folding side 4F after extending further upward than the extension part, and Both the outer surfaces of the folded intermediate sheets 41 and 42 are fused to the inner surfaces of the two bag sheets 11 and 12, thereby forming a bag bottom structure of a bag mouth structure of adjacent upper bag units. (FIGS. 2 and 3). In this continuous bag body, two long sheets 110/120 having substantially the same width continuously formed in the vertical direction are overlapped with each other, and the pair of fastener bands 31 and 32 and the intermediate sheet piece 4 in a locked state are long. After being inserted in the width direction crossing the sheet, both side portions of the two long sheets are fused in the side region 1S having a constant vertical width, and in the bottom region 1B and the bag end region 1M across the width direction. By fusing, it is continuously constructed up and down (FIG. 1).

  The fusion of the bottom region 1B and the bag end region 1M is made up of one region continuous in the width and height directions. Here, the intermediate sheet piece 40 between the bag sheets 11 and 12 extends upward from the fixing portion with the one fastener band 31, and then is folded back at the upper side at the folding side 4F to extend one intermediate sheet. The piece 41 and the other intermediate sheet extending piece 42 are superposed. The outer surfaces of the one intermediate sheet extending piece 41 and the other intermediate sheet extending piece 42 and the inner surfaces of the bag sheets are heat-fused in a predetermined region where the bottom region 1B and the bag end region 1M are continuous. Worn. And this one area | region is divided | segmented up and down by the cut line CL which extends over a bag width direction linearly, and the bottom part of a bag body and the fusion | melting part of a bag end are each comprised (FIG. 2). At both ends of the cut line CL, there are provided cut portions CV in which a part of the fusion region of the side portion of the bag sheet is cut out in a laterally V shape, and the other bag sheet 12 has a cut surface on the surface. A display line indicating the line CL is formed like a broken line (FIGS. 1 and 2).

  The bottom region 1B has an upper edge in which two curved lines curved downward are continuously formed with the bottom center portion 1BC as an upward bent portion. With this upper edge shape, when one intermediate sheet extending piece 41 and the other intermediate sheet extending piece 42 are pushed and spread as the bag bottom, it is possible to suppress excessive projecting deformation outward in the center of the bag width. . On both sides of the bottom region, identification markers TE are formed which are filled and colored in a rectangular shape with a predetermined identification color. The identification marker TE is used as a mechanical identifier of the structural unit of the bag body in the continuous bag body, at the time of the inspection of the position of the cut line CL, and poor product welding and poor appearance. The identification marker TE of the embodiment is a horizontally long rectangular area, and it is easy to check an important welding state around the identification marker TE.

  Moreover, as the heat insulation processing structure of Example 1, the heat-resistant tape 6 of the width | variety which overlaps the sealing area | region 5A is affixed over the whole opening width direction on the opposing surface with said other bag sheet among the intermediate | middle sheet pieces 4. . In the heat-resistant tape, a portion of the tape closer to the lower side of the bag mouth is formed with deaeration and vent holes H that are circularly penetrated in the overlapping direction of the sheets together with the two bag sheets in the bag width direction (see FIGS. 1 to 1). FIG. 6). By the deaeration and the vent hole H, it is possible to avoid the remaining of excess air in the bag before accommodation and to allow the contents to be vented to the outside.

  One and other fastener bands 31 and 32 of the embodiment have one and other fastener structures 21 and 22 that can be locked to each other, and extend in the width direction of the mouth. The outer surface of the fastener band 32 and the inner surface of the other bag sheet 32 are divided into two fusion regions 3M divided into an upper half and a lower half excluding the fastener structure 22 portion in the height direction of the fastener band 32. Heat-sealed. Also, the outer surface of one fastener band located on the inner side and one side of the intermediate sheet piece 4 having the lower end at the same position as the lower end of the fastener band are the same except for the fastener structure 21 portion in the height direction of the fastener band 31. Heat fusion is performed in two fusion regions 3M divided into a half part and a lower half part.

  Further, the intermediate sheet piece 4 fixed to the one fastener band 31 and the one and the other bag sheets 11 and 12 respectively have a bag opening more than the fastener band 31/32 fixed between the bag sheets 11/12. It is formed to extend upward. Further, the other fastener band 32 not fixed to the intermediate sheet piece 4 is fused and fixed to the inner surface of the other bag sheet 12 facing the outer surface side, and is brought into a locked state with the one fastener band 31. On each of the opposing facing surfaces, the sealing region 5A, the open line OL, and the upper end for performing degassing and venting H, sealing after containing the contents in order along the upward extending direction. A fusion region 1M and a cut line CL are provided.

  The continuous bag body of Example 1 as shown in FIGS. 1 and 3 having the above structure is separated into bag units as shown in FIGS. 2 and 4 by being cut at the cut line CL. At this time, the bag bottom of each bag unit is configured by a further upwardly extending piece of the intermediate sheet piece 4. And only by cutting the continuous bag body along the cut line CL in the width direction, a bag bottom structure with a gusset bottom having the intermediate sheet piece 4 as a gusset bottom is formed at one cut destination, and the other cut destination In addition, a bag structure having an opening opening with the intermediate sheet piece 4 and one of the bag sheets as an open end is formed. By integrating the intermediate sheet piece 4, folding at the extension destination, and surface fusion of the folded part, the lower bag bag structure and the upper bag bag bottom structure that are connected in the vertical direction are integrated. Therefore, each bag after being cut at the cut line CL can be obtained as a relatively strong structure.

  Next, as shown in FIG. 4, after containing the contents from the sealing opening, 5B is arranged from the outside of the one bag sheet 11 to the bottom in accordance with the sealing indication 5E, and the heating area 5H is applied to the sealing area 5A. Sealing is performed by heat sealing (FIGS. 4 and 5). However, the heat-insulating tape 6 is interposed between the other bag sheet and the intermediate sheet so as to overlap with the sealing region, and the opening between the other bag sheet and the intermediate sheet is sealed by sealing the sealing region. Only the sealing port between the one bag sheet and the intermediate sheet which is not sealed and does not have the heat insulating tape 6 interposed is sealed. The state of FIG. 5 is an accommodation state in which the contents are accommodated and the mouth portion is sealed, and the contents of the bag are traded in this accommodation state. Then, as shown in FIG. 6, by cutting the upper portion of the bag with the open line OL above the sealing region, the sealing port remains sealed and only the opening is unlocked by the fastener structures 21 and 22. Can be opened.

  The continuous bag body or bag body of the second embodiment shown in FIGS. 7 to 8 has a bag mouth structure substantially the same as that of the first embodiment at the upper part of each bag, and borders the cut line CL in the width direction near the bag mouth. As a continuous bag body in which a plurality of bag units are vertically connected, the hand hole 7 and the fusion region 1R along the periphery of the hand hole are further formed as a structure different from that of the first embodiment. Specifically, as shown in FIG. 7, the peripheral edge of the hand hole and the sealing region below the cut line CL intersect to form an integral welding region. The portion of the heat-resistant tape 6 that overlaps the fusion region 1R is removed by a notch, and the other bag sheet 12 is sealed to the intermediate sheet piece 4 at the periphery of the hand hole 7.

  Specifically, the intermediate sheet piece 4 in Example 2 and the one and other bag sheets 11/12 are both formed to extend from the sealing region to the upper side of the bag mouth, and are intermediate to the other bag sheet 12. The sheet pieces 4 are connected over the entire width at the extension forming destination, and at least one of the bag sheet outer surfaces above the sealing region has a triangular shape for opening after sealing. Colored opening indications OE are applied to both ends. And after Example 1 and the sealing to a sealing area, according to the said opening display, one and the other bag sheet | seat and the intermediate sheet piece 4 are put together in the width direction, and cut up and down similarly to Example 1. And an opening that can be resealed is formed by locking the fastener structure.

(Deaeration structure of Example 2)
Both the intermediate sheet piece 4 and the one and the other bag sheet 11/12 are formed to extend from the sealing region above the bag mouth,
Of these, the opposing sheets / sheet pieces are connected over the entire width at the extension forming destination, and in the upper bag end region 1M, the sheet surface of the extension forming portion or between the sheets Small circular deaeration holes H communicating the connecting part to the outside of the bag are scattered in the width direction. Other configurations and usage methods not specifically mentioned are the same as those in the first embodiment.

  The continuous bag body or bag body of Example 3 shown in FIGS. 9 to 11 has a bag mouth structure substantially the same as that of Example 1 at the upper part of each bag, and borders on a cut line CL in the width direction near the bag mouth. As in Example 1, the intermediate sheet piece 4 constituting the bag mouth structure of one bag unit is further upward than the extending portion. It is folded after extending, and the folded outer surfaces are fused to the inner surfaces of the two bag sheets, thereby forming a bag bottom structure of the bag mouth structure of another adjacent bag unit. Become. Also, in the third embodiment, unlike the first embodiment, only the intermediate sheet piece 4 has a vent hole HU formed in a broken line shape in the bag width direction at a position below the sealing region 5A and above the fastener structures 21 and 22. Only the other two sheets of the bag sheet 12 and the intermediate sheet piece 4 are formed with deaeration and vent holes HO1 and HO2 at positions above the sealing region 5A and overlapping the cut line.

  In particular, the heat treatment structure of Example 3 is formed by attaching a heat-resistant tape having a width overlapping the sealing region across the mouth width direction on the surface of the intermediate sheet piece 4 facing the other bag sheet, Of the heat-resistant tape, the tape end portion below the bag mouth is provided with a non-adhesion region that overlaps with the intermediate sheet piece 4 in an unattached state, and the intermediate sheet piece 4 in the non-adhesion region communicates with the inside of the bag. Alternatively, a plurality of vent holes HU are provided, and a deaeration hole HO communicating with the outside of the bag is provided in the other bag sheet above the bag opening from the sealing region. According to the said structure, the tape edge part which overlapped with the intermediate | middle sheet piece 4 became a cover part of the vent hole HU, the vent hole HU opened by opening the cover part, and the accommodation area | region of a bag is more than a fastener belt | band | zone. The air is ventilated into one side space (for example, the upper left sheet portion in FIG. 11) of the bag mouth sandwiched between the other bag sheet and the intermediate sheet piece 4 at the upper part. The one side space of the bag mouth communicates with the outside through a deaeration hole HO provided in the other bag sheet, and therefore the bag storage area communicates with the outside through the one side space of the bag mouth opened and closed. It becomes. For this reason, contaminants, such as dust and water, do not easily enter the storage area from the outside, and the storage state of the storage object can be kept hygienic. In addition, the sealing area | region of Example 3 is seal-displayed 5E as intermittent rectangular coloring in the bag width direction.

  The continuous bag body or bag body of Example 4 shown in FIGS. 12 to 14 has a bag mouth structure substantially the same as that of Example 1 at the top of each bag, and a vertical cut line along the vicinity of both sides of the bag. A continuous bag body in which a plurality of bag units are laterally connected with CL as a boundary, and the bag bottoms of each bag unit are connected by a connecting part in the width direction of the stacked bag sheets, and the folding side 4F in the width direction It is bent and formed.

(Bag)
Further, as shown in FIG. 14, the bag body of Example 4 includes the deaeration structure of the present invention in the bag mouth, and the lower portions of the bag bodies adjacent to the mouth end direction of the bag mouth are connected to each other by the bag sheets. In a continuous bag body in which the upper end is fused with a predetermined width and a plurality of bag units are laterally connected with a vertical cut line CL along the vicinity of both sides of the bag as a boundary, It is formed by cutting the continuous bag body along the longitudinal cut line CL in the landing portion. When the contents are accommodated, one and the other bag sheets have folding sides 11F and 12F folded upward at the bottom, and then are connected by a downward folding side 4F. By fusing the left and right sides of each bag body in the fusion region between the folded sides, the bottom portion of the bag body is formed so that the front sheet body and the back sheet body are expanded by loading the contents.

The bag body of Example 5 shown in FIG. 15 does not have a pair of fastener bands 31 and 32, but has a bag opening ventilation structure substantially similar to that of Example 3. Specifically, in the bag mouth structure of the fifth embodiment, in the bag mouth formed by connecting both side portions of the two bag sheets 11/12 that are overlapped with each other, An intermediate sheet piece 4 fixed at two locations on the upper and lower sides is provided for either one of the sheets 11 and 12, and after the contents are accommodated in the bag, the sheets over the entire mouth width of the bag mouth are It is a sealing type bag mouth structure that is sealed at a predetermined sealing region 5A between two upper and lower portions,
A heat-resistant tape having a width that overlaps with the sealing region is pasted across the mouth width direction on the surface of the intermediate sheet piece 4 facing the other bag sheet, and the tape end below the bag mouth of the heat-resistant tape. The part is provided with a non-attachment region that overlaps with the intermediate sheet piece 4 in a non-adhered state, and the intermediate sheet piece 4 in the non-attachment region is provided with one or a plurality of vent holes HU that communicate with the inside of the bag. The other bag sheet above the bag opening from the sealing region is provided with a deaeration hole HO communicating with the outside of the bag. An open line is provided at a lower portion of the fusion region and overlapping with the vent hole HU.

And as a basic structure of the continuous bag body of the present invention, one continuous bag sheet 110 that continuously constitutes the back side bag constituting surface, and the other continuous bag sheet 120 of the same width that continuously constitutes the back side bag constituting surface, Are overlapped with each other, and surface bonding (including fusion bonding) or bending connection is performed at the sealing side portions 1S on both sides, whereby a plurality of bag bodies are connected and formed. And in the opening | mouth part of each bag body, it has fastener structure 21 and 22 which can be mutually latched between each bag sheet 11/12 of the bag sheet 11/12 which each side part continues and comprises each bag unit. And a pair of fastener bands 31, 32 extending in the mouth width direction and an intermediate sheet piece 4 fixed to one of the pair of fastener bands 31, 32 are provided. The intermediate sheet piece 4 and the one and the other bag sheets 11/12 are both formed to extend from the sealing region to the upper side of the bag mouth,
The other bag sheet and the intermediate sheet piece 4 are connected over the entire width at the extension forming destination,
And at least any bag sheet outer surface above the sealing region is subjected to an opening indication OE for opening after sealing,
After the contents are contained and sealed in the sealing area, the one and the other bag sheet and the intermediate sheet piece 4 are opened in the mouth width direction according to the opening indication, and are opened and cut. An opening that can be resealed is formed by locking.

(Insulation treatment structure for sealing area)
The sealing between the intermediate sheet piece 4 and the one bag sheet in the sealing region is by thermal fusion, and is between the opposing surfaces of the intermediate sheet piece 4 and the other bag sheet, and the sealing region In the overlapping portion, a heat insulating material for avoiding heat fusion is interposed over the entire mouth width direction. However, the heat insulation treatment structure here refers to forming a layer of a heat insulating agent (heat insulating ink or the like) on at least one of the facing surfaces of the intermediate sheet piece 4 and the other bag sheet, attaching a heat insulating material, Including any intervening material.

  In addition, the present invention is not limited to the above-described embodiments, and extraction of elements, change of combinations, omission, change of the order of each process, omission of some configurations, or the like are appropriately made without departing from the spirit of the present invention. The arrangement can be changed.

(11/12) Bag sheet (21, 22) Fastener structure (31, 32) Fastener band (4) Intermediate sheet piece (5A) Sealing area (OE) Opening indication (HO) Deaeration hole (6) Heat resistant tape (HU ) Vent (CL) Cut line (4F) Folding side

Claims (7)

In the bag mouth configured such that both sides of the two stacked bag sheets are connected to each other,
Between each sheet,
A pair of fastener bands having fastener structures that can be locked together and extending in the mouth width direction;
An intermediate sheet piece fixed to either one of the pair of fastener bands is provided,
After the contents are contained in the bag, the sheets over the entire mouth width of the bag mouth are sealed at a predetermined sealing region facing the bag mouth,
The intermediate sheet piece fixed to any one of the fastener bands and the one bag sheet facing the outer surface side of the one fastener band are respectively above the bag mouth from the fastener structure of the fixed fastener band. Formed and extended to
The other fastener band that is not fixed to the intermediate sheet piece is fused and fixed to the inner surface of any other bag sheet that faces the outer surface side thereof,
The bag mouth structure according to claim 1, wherein the sealing region for sealing after the contents are accommodated is provided on each of the extended opposing surfaces. The intermediate sheet piece and the one and other bag sheets are both formed to extend from the sealing region to the upper part of the mouth,
The other bag sheet and the intermediate sheet piece are connected to each other over the width direction of the extension forming destination,
And, at least any bag sheet outer surface above the sealing region is subjected to an opening indication for opening after sealing the contents,
After the contents are stored and sealed in the sealing area, the one and the other bag sheet and the intermediate sheet piece are opened in the mouth width direction according to the opening indication, and then opened up and down. The bag mouth structure according to claim 1 or 2, wherein an opening that can be resealed by stopping is formed. Both the intermediate sheet piece and the one and the other bag sheet 11/12 are formed to extend from the sealing region above the bag mouth,
Of these, the opposing sheets / sheet pieces are respectively connected over the entire width at the extension forming destination,
Among these, at least the intermediate sheet piece and the other bag sheet are provided with one or a plurality of deaeration holes HO communicating with the outside of the bag at the sheet surface of the extension forming portion or the connecting portion between the sheets. The bag mouth structure according to 1 or 2. Sealing of the intermediate sheet piece and one bag sheet in the sealing region is due to heat fusion,
At least one of the facing surfaces of the intermediate sheet piece and the other bag sheet, which overlaps the sealing region, has a heat insulation processing structure for avoiding heat fusion over the entire width direction in advance. The bag mouth structure according to any one of claims 1, 2, and 3. The heat-insulating structure is formed by affixing a heat-resistant tape having a width overlapping the sealing region across the mouth width direction on the surface facing the other bag sheet of the intermediate sheet piece,
Of the heat-resistant tape, the tape end portion below the bag mouth is provided with a non-attachment region that overlaps with the intermediate sheet piece in an unattached state,
The intermediate sheet piece in the non-attachment region is provided with one or a plurality of vent holes communicating with the inside of the bag,
The bag mouth structure according to any one of claims 1, 2, 3 and 4, wherein a deaeration hole communicating with the outside of the bag is provided in the other bag sheet above the bag mouth from the sealing region. A bag mouth structure according to any one of claims 1, 2, 3, 4, or 5 is provided at an upper portion of each bag, and a plurality of bag units are laterally separated by a longitudinal cut line along the vicinity of both sides of the bag. A connected continuous bag,
The continuous bag body which the bag bottom part of each bag unit is connected by the connection part of the width direction of the laminated | stacked bag sheets, and is folded and formed with the folding edge of the width direction. A bag mouth structure according to any one of claims 1, 2, 3, 4, or 5 is provided at an upper portion of each bag, and a plurality of bag units are laterally separated by a longitudinal cut line along the vicinity of both sides of the bag. A connected continuous bag,
A continuous bag body in which a bag bottom portion of each bag unit is connected by a connecting portion in the width direction of stacked bag sheets, and is folded and formed with a folding edge in the width direction.

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