JP2016113214A - Bag body and bag-packed body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a bag body to easily be opened by a constant small force with little dispersion for each bag body, and to prevent careless opening.SOLUTION: A bag body 1 has a cylindrical trunk closed in one end part side and opened in the other end part side. A region of a sheet part 2A of the cylindrical trunk on an edge 2a side and a region of a sheet part 2B of the cylindrical trunk on an edge 2b side are overlapped like an envelope with sheet parts 2A turned outside. They are bonded at a bond region R2 where at least a part of the edge part region along the edge 2a of the sheet part 2A is removed as an unbonded region R1. Two cuts are formed with an interval in the end edge of the unbonded region R1. At least one of the sheet parts 2A and 2B has a laminate structure of two or more layers including easily breakable layers in the bond region R2. The easily breakable layers are broken by picking up and pulling the unbonded region R1 of the first sheet part 2A between the two cuts.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bag body for storing a desired storage object and a bag-packed body.

  As a bag body that can be easily opened, in Patent Document 1, in a pillow type bag made of a film including at least a lateral uniaxially stretched film in its configuration, the end of the palm portion is a non-adhesive portion, There is disclosed an easy-open packaging material characterized in that the center seal portion is a weak seal and two notches are provided at the end of the palm portion piece.

JP-A-10-86948

  However, in the easy-open packaging material disclosed in Patent Document 1, since the end of the palm joint portion where the two notches are formed is picked up and the portion sealed with the palm joint is raised when it is torn, It cannot be easily torn, such as requiring a force to tear the knob further forward by pressing the part sealed with the packaging bag with a hand on one side.

  Further, Patent Document 1 describes that easy opening is possible by making the center seal a weak seal. Improvement of an easily openable resin to form a weak seal, such as a blend of heat seal inhibiting components, etc. It is also described that a weak seal portion is formed by easy opening by the method described above, or by applying a solution type or emulsion type adhesive to the inner surface of a substrate film. However, when the weak seal portion is formed by blending an inhibitory component or the like, the adhesive strength varies greatly depending on the selection of the blend material or the amount of the blend material depending on the seal temperature or the seal time at the time of adhesive sealing. In addition, when the weak seal portion is formed by applying a solution type or emulsion type adhesive to the inner surface of the substrate film, unevenness in the adhesive seal strength is caused by the amount of adhesive applied or uneven application.

  Furthermore, in the easy-open packaging material disclosed in Patent Document 1, the base film in which the notch of the tearing notch is formed with a short length and the weak sealing property is taken into account is adhesively sealed in a jointed state. Therefore, the adhesive strength is strong, and it is not in a state of causing a tear, and is difficult to tear. On the other hand, if the adhesive strength is weakened, the bag body may be opened carelessly.

  The present invention has been made in view of such circumstances, and can be easily opened with a relatively constant relatively small force with little variation from bag to bag, and there is no risk of unintentional opening. It aims at providing a bag body and a bagging body using the same.

  The following aspects are presented as means for solving the problems. A bag body according to a first aspect is a bag body having a cylindrical body portion that is closed on one end side and opened on the other end side, wherein the body portion extends from the one end side to the other end. A first sheet portion having a first edge extending toward the end side, and a second sheet portion having a second edge extending from the one end portion side to the other end portion side, The region on the first edge side of the sheet portion and the region on the second edge side of the second sheet portion have the first sheet portion outside and the second sheet portion inside. At least an edge region along the first edge of the first sheet portion is overlapped with the envelope attachment shape, and the region between the first and second sheet portions overlapped with the envelope attachment shape is at least In the adhesion area excluding a part as a non-adhesion area, the first Two tear cuts are formed at an edge of the non-adhesive region of the sheet portion, spaced apart, and at least one of the first and second sheet portions is the first between the two tear cuts. The first sheet portion between the two tear notches having a laminated structure of two or more layers including an easily breakable layer in the adhesive region arranged in the tearing direction with respect to the non-adhesive region of the sheet portion The non-adhering region is picked up and pulled in the tearing direction intersecting the first and second edges, whereby the easily breakable layer is broken, so that the picking region is aligned in the tearing direction. The adhesive strength between each layer of the first and second sheet portions and the strength of each layer are set so that the muffled side is separated from the remaining side.

  The laminated structure preferably includes a synthetic resin layer in addition to the easily breakable layer. Further, the number of tear notches may be three or more. For example, a large number of V notches may be formed continuously as the notches.

  In the specification of the present application, an easily breakable layer can maintain a laminated state with a layer laminated next to it in a normal use state, but the adjacent layer is manually peeled off without using a tool or the like. It means a layer that is easily broken into two layers (interlaminar fracture) by applying an external force. The fracture surface does not have to be tacky, and an easily breakable layer having no tackiness on the fracture surface may be referred to as a non-tacky easily breakable layer.

  According to this first aspect, since the first and second sheet portions are enveloped, the non-adhesive region of the first sheet portion between the two tear notches is pinched. The bag body can be opened by pulling in the tearing direction intersecting the first and second edges. Therefore, according to the first aspect, unlike the bag body to which the hand-sealed seal such as the easy-open packaging material disclosed in Patent Document 1 is applied, the bonded part does not stand up, Can be opened easily.

  In the first aspect, at least one of the first and second sheet portions is arranged in a tearing direction with respect to the non-adhesion region of the first sheet portion between the two tear notches. The adhesive region has a laminated structure of two or more layers including an easily breakable layer, and the first and second edges are picked by pinching the non-adhesive region of the first sheet portion between the two tear notches. By pulling in the tearing direction that intersects with the first breakable layer, the easily breakable layer is broken, so that the pinched side is separated from the remaining side in the adhesive region aligned in the tearing direction. And the adhesive strength between each layer of the 2nd sheet | seat part and the intensity | strength of each layer are set. Therefore, according to the first aspect, the breakage of the easily breakable layer is skillfully utilized at the time of opening, and the force by the pull is applied to the easily breakable layer in a linear form instead of a planar shape, whereby the breakable force is applied to the easily breakable layer. Because of the concentration, the easily destructible layer is destroyed with a relatively small force. For this reason, according to the said 1st aspect, it can open with comparatively small force. On the other hand, unless the opening operation is performed, the destructive force does not concentrate on the easily breakable layer, so that there is no possibility of unintentional opening. Further, according to the first aspect, since the breakage of the easily breakable layer is skillfully used at the time of opening, the adhesive strength between the layers of the first and second sheet portions and the strength of the layers other than the easily breakable layer Even if it is high, it can be opened with a relatively small force. For this reason, according to the first aspect, the bag can be opened with a relatively small force without using a weak seal or a weak bond. can do. In addition, according to the first aspect, since it is not necessary to use a weak seal or a weak bond, it is not necessary to perform strict management that reduces variations in the strength of the weak seal or the weak bond during manufacturing. For this reason, the bag body can be easily manufactured.

  The bag according to a second aspect is the bag according to the first aspect, wherein the body portion is composed of one sheet, and each of the first and second sheet portions is a part of the one sheet. It is.

  According to the second aspect, since the first and second sheet portions constitute the same sheet, it can be easily manufactured. But in the said 1st aspect, another sheet | seat may be sufficient as the sheet | seat which comprises the said 1st sheet | seat part, and the sheet | seat which comprises the said 2nd sheet | seat part.

  The bag according to the third aspect is the bag according to the first or second aspect, wherein the easily breakable layer is paper.

  In the third aspect, paper is used as an example of the easily breakable layer. However, in the first and second embodiments, the specific material of the easily breakable layer is not limited at all. For example, a non-adhesive easily breakable layer (for example, a binder) disclosed in Japanese Patent No. 3477178 is disclosed. And a filler having a filler and air bubbles contained in the binder) or a polyester synthetic paper (for example, a product called “Crisper” manufactured by Toyobo Co., Ltd.) with a hollow inside. A polyester-based biaxially stretched film) may be employed.

  In the bag according to the fourth aspect, in any one of the first to third aspects, the bonding between the bonding regions of the first and second sheet portions superimposed in the envelope pasting shape is a heat seal. Adhesion by. The fourth aspect is an example of the adhesion.

  The bag according to the fifth aspect is the adhesive according to any one of the first to third aspects, wherein the adhesive between the adhesive regions of the first and second sheet portions overlapped in the envelope pasting shape is an adhesive. Adhesion by. In the fifth aspect, another example of the adhesion is given.

  In the bag according to the sixth aspect, in the fifth aspect, the layer on the adhesive side in the adhesion region of the first sheet portion is paper, and in the adhesion region of the second sheet portion. The layer on the adhesive side is paper, the layer on the adhesive side in the adhesive region of the first sheet portion, and the adhesive side in the adhesive region of the second sheet portion. At least one of the layers forms the easily breakable layer.

  According to the sixth aspect, since the adhesion between the first sheet portion and the second sheet portion by the adhesive is the adhesion between papers, it is easy to firmly perform the adhesion. In addition, the adhesive can be easily prevented from leaking from the edge of the sheet portion.

  In any one of the first to sixth aspects, the bag according to the seventh aspect is arranged on an extension line of at least one of the two tear notches in the first sheet portion. A perforation to be a tearing guide or a continuous or intermittent half-cut line is formed.

  According to the seventh aspect, since the perforation or the half-cut line is formed in the first sheet portion, the first sheet portion does not include a layer having a straight cut property. However, easy-openability can be further improved. However, in the first to sixth aspects, the perforation or the half-cut line may not be formed in the first sheet portion, and in that case, the first sheet portion is a straight line. It may or may not include a layer having a cutting property.

  The bag body according to an eighth aspect is the area according to any one of the first to seventh aspects, wherein the region between the two tear notches in the first sheet portion and the region aligned in the tear direction with respect thereto In a region excluding, a sheet pasted on the outer surface of the first and second sheet portions so as to straddle the first edge is provided. The attached sheet may be, for example, a label or a seal.

  According to the eighth aspect, since the sheet is reinforced by the attached sheet, for example, when opening and picking the non-adhesion region of the first sheet portion between the two tear notches at the time of opening. Even if this force is applied in a direction oblique to the tearing direction, it is difficult to break the bag.

  A bag body according to a ninth aspect is a bag body having a cylindrical body portion that is closed on one end side and opened on the other end side, wherein the body portion extends from the one end side to the other end. A first sheet portion having a first edge extending toward the end side, and a second sheet portion having a second edge extending from the one end portion side to the other end portion side, The region on the first edge side of the sheet portion and the region on the second edge side of the second sheet portion have the first sheet portion outside and the second sheet portion inside. In the bonding region where the regions of the first and second sheet portions overlapped in the envelope pasting shape are overlapped in the entire region or a part of the overlapping region And the trunk portion has a straight cut property in a lateral direction of the trunk portion. Is composed of a single sheet is tearable in the transverse direction and having a layer, the first and second sheet portions are those which are part of each of said one sheet.

  According to the ninth aspect, since the first and second sheet portions are formed in an envelope-like shape, a hand-sticking seal such as the easy-open packaging material disclosed in Patent Document 1 is applied. Unlike the bag body, the bonded part does not stand up and can be opened easily.

  In addition, according to the ninth aspect, the trunk portion includes a layer having a linear cut property in the lateral direction of the trunk portion and is configured by one sheet that can be torn in the lateral direction. In addition, since one end side of the body portion can be opened by tearing in the lateral direction, it can be opened with a relatively small force and there is no possibility of unintentional opening.

  In the ninth aspect, the bag body according to the tenth aspect is bonded by an adhesive between the first and second sheet portions superimposed in the envelope pasting shape, The layer on the adhesive side in the adhesive region of the first sheet portion is paper, and the layer on the adhesive side in the adhesive region of the second sheet portion is paper.

  According to the tenth aspect, since the adhesion between the first sheet portion and the second sheet portion by the adhesive is an adhesion between papers, it is easy to firmly perform the adhesion. In addition, the adhesive can be easily prevented from leaking from the edge of the sheet portion.

  A bag body according to an eleventh aspect is the square bottom bag according to any one of the first to tenth aspects, wherein the bag body has a square bottom portion that closes the one end side of the trunk portion. is there.

  In the eleventh aspect, a square bottom bag is cited as an example of the bag body. However, in the first to tenth aspects, the specific form of the bag body is not limited at all. For example, a bag having the same form as the three-side seal bag, a flat bottom bag, a gusset bag, a standing pouch, or the like may be used.

  A bag-packing body according to a twelfth aspect is a bag-packing body in which a desired container is accommodated inside a bag body having a cylindrical body portion closed at one end side and the other end side. The body portion includes a first sheet portion having a first edge extending from the one end side to the other end side, and a second edge extending from the one end side to the other end side. A second sheet portion having the first sheet portion, and a region on the first edge side of the first sheet portion and a region on the second edge side of the second sheet portion comprising the first sheet portion. The first sheet portion is placed between the regions of the first and second sheet portions that are overlapped in an envelope pasting shape with the second sheet portion facing inside and the second sheet portion inside. A contact region excluding at least a part of the edge region along the first edge as a non-adhesive region. In the region, two tear notches are formed at intervals on the edge of the non-bonded region of the first sheet portion, at least one of the first and second sheet portions is In the adhesion region aligned in the tear direction with respect to the non-adhesion region of the first sheet portion between two tear notches, the two tearing layers have a laminated structure including an easily breakable layer. By picking the non-adhesive area of the first sheet portion between the cuts for cutting and pulling in the tearing direction intersecting the first and second edges, the easily breakable layer is destroyed, whereby the tearing direction The adhesive strength between each layer of the first and second sheet portions and the strength of each layer are set so that the picked side is separated from the remaining side in the adhesive region lined up It is.

  The laminated structure preferably includes a synthetic resin layer in addition to the easily breakable layer. Further, the number of tear notches may be three or more. For example, a large number of V notches may be formed continuously as the notches.

  The contents are not limited in any way, and may be, for example, agricultural chemicals, foods, medicines, and the like. Further, the contents may be powder, liquid, solid or the like.

  According to a thirteenth aspect, in the twelfth aspect, the bag is formed of one sheet, and each of the first and second sheet portions is a part of the one sheet. Is.

  A bag-packed body according to a fourteenth aspect is the twelfth or thirteenth aspect, wherein the easily breakable layer is paper.

  The bag-packed body according to the fifteenth aspect according to any one of the twelfth to fourteenth aspects, wherein the adhesion between the adhesion regions of the first and second sheet portions stacked in the envelope pasting shape is heat It is adhesion by a seal.

  A bag-packed body according to a sixteenth aspect is the adhesive according to any one of the twelfth to fourteenth aspects, wherein the adhesion between the adhesion regions of the first and second sheet portions superimposed in the envelope pasting shape is an adhesion. Adhesion with an agent.

  The bag-packed body according to a seventeenth aspect according to the fourteenth aspect, wherein the layer on the adhesive side in the adhesion region of the first sheet portion is paper, and the adhesion region of the second sheet portion The layer on the adhesive side in the paper is paper, the layer on the adhesive side in the adhesive region of the first sheet portion, and the side of the adhesive in the adhesive region of the second sheet portion. At least one of the layers forms the easily breakable layer.

  The bag-packed body according to an eighteenth aspect according to any one of the twelfth to seventeenth aspects, wherein the first sheet portion has an extension line of at least one of the two tear notches. A perforation to be a tearing guide or a continuous or intermittent half-cut line is formed.

  A bag-packed body according to a nineteenth aspect according to any one of the twelfth to eighteenth aspects, is arranged in the region between the two tear notches in the first sheet portion and in the tear direction with respect thereto. In a region excluding the region, a sheet is provided that is attached to the outer surface of the first and second sheet portions so as to straddle the first edge.

  The bag-packing body according to the twentieth aspect is a bag-packing body in which a desired container is accommodated in a bag body having a cylindrical body portion closed at one end and the other end. The body portion includes a first sheet portion having a first edge extending from the one end side to the other end side, and a second edge extending from the one end side to the other end side. A second sheet portion having the first sheet portion, and a region on the first edge side of the first sheet portion and a region on the second edge side of the second sheet portion comprising the first sheet portion. The outside of the first sheet and the second sheet part overlapped in the envelope pasting shape is overlapped in the envelope pasting shape with the second sheet portion inside and the second sheet portion inside. In the bonding area, which is the entire area or a part of the area, the body is bonded, It has a layer having a straight cut property in the lateral direction of the body portion and is composed of one sheet that can be torn in the lateral direction, and each of the first and second sheet portions is a part of the one sheet. It is what is.

  According to a twenty-first aspect, in the twentieth aspect, the bag-filled body according to the twenty-first aspect is bonded by an adhesive between the bonding regions between the first and second sheet portions superimposed in the envelope pasting shape. The layer on the adhesive side in the adhesive region of the first sheet portion is paper, and the layer on the adhesive side in the adhesive region of the second sheet portion is paper.

  A bag-packing body according to a twenty-second aspect is the one according to any one of the twelfth to twenty-first aspects, wherein the bag body is a square-bottom bag having a square bottom portion that closes the one end side of the trunk portion. It is.

  The bag-packed body according to the twelfth to twenty-second aspects corresponds to the bag body according to the first to eleventh aspects, and accommodates an item in the bag.

  According to the present invention, a bag body that can be easily opened with an almost constant relatively small force with little variation from bag to bag, and that is not likely to be opened carelessly, and a bag using the bag body Stuffing can be provided.

It is a figure which shows the bag body by the 1st Embodiment of this invention. It is a schematic sectional drawing in alignment with the A-A 'line in FIG. It is the general | schematic expanded sectional view which expanded the B section in FIG. It is a figure which shows the state after opening of the bag body shown in FIG. It is a general | schematic expanded sectional view which shows the opening process of the bag body shown in FIG. It is a general | schematic expanded sectional view which shows the state which opening progressed rather than the state shown in FIG. 5 of the bag body shown in FIG. It is a general | schematic expanded sectional view which shows the bag body by the 2nd Embodiment of this invention. It is a general | schematic expanded sectional view which shows the opening process of the bag body shown in FIG. It is a general | schematic expanded sectional view which shows the state which opening progressed rather than the state shown in FIG. 8 of the bag body shown in FIG. It is a figure which shows the bag body by the 3rd Embodiment of this invention. It is a schematic front view which shows the bag body by the 4th Embodiment of this invention. It is a schematic exploded perspective view of the bag shown in FIG. It is a schematic perspective view which shows the state which opened the opening part moderately of the bag body by the 5th Embodiment of this invention. It is a schematic perspective view which shows the middle state of winding of the bag body shown in FIG. FIG. 14 is a schematic perspective view showing a state in which an object is accommodated in the bag body shown in FIG. 13 and an opening is closed to form a bag-packed body. It is a general | schematic expanded sectional view which shows the bag body by the 6th aspect of this invention. It is a figure which shows the bag body by the 7th Embodiment of this invention. It is a figure which shows the bag body by the 8th Embodiment of this invention. It is a schematic sectional drawing along the D-D 'line in FIG. It is a schematic perspective view which shows the state which the accommodation thing was accommodated in the bag body by the 9th Embodiment of this invention, and the opening part was obstruct | occluded and became the bagging body.

  Hereinafter, a bag body and a bag filling body according to the present invention will be described with reference to the drawings.

  [First Embodiment]

  FIG. 1 is a diagram showing a bag body 1 according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view along the line A-A ′ in FIG. 1. FIG. 3 is a schematic enlarged cross-sectional view in which a portion B in FIG. 2 is enlarged.

  The bag body 1 according to the present embodiment has a cylindrical body portion whose one end side (lower side in FIG. 1) is closed and whose other end side (upper side in FIG. 1) is opened. doing. In the present embodiment, as shown in FIG. 2, the body portion is configured by a single sheet 2 in a cylindrical shape. In the present embodiment, the sheet 2 includes a first sheet portion 2A having a first edge 2a extending in a vertical direction in FIG. 1 (a direction perpendicular to the paper surface in FIG. 2), and a vertical direction in FIG. And a second sheet portion 2B having a second edge 2b extending in a direction (a direction perpendicular to the paper surface in FIG. 2). Thus, in the present embodiment, each of the first and second sheet portions 2A and 2B is a part of one sheet 2.

  As shown in FIG. 2, the region on the first edge 2a side of the first sheet portion 2A and the region on the second edge 2b side of the second sheet portion 2B are outside the first sheet portion 2A. In addition, the second sheet portion 2B is placed on the inner side, and is overlapped with an envelope. And between the said area | region of 1st and 2nd sheet | seat part 2A, 2B piled up in the said envelope sticking shape, at least one part of the edge part area | region along the 1st edge 2a of 2 A of 1st sheet | seat parts is used. In the adhesion region R2 excluding the non-adhesion region R1, it is adhered. In the present embodiment, the non-adhesion region R1 is the entire edge region along the first edge 2a, but may be a part of the edge region. In order to facilitate understanding, in FIG. 1, the adhesion region R2 of the first sheet portion 2A is hatched, and in FIGS. 1 and 3, the non-adhesion region R1 of the first sheet portion 2A is the first region. 2 is shown in a state slightly turned up from the sheet portion 2B. In the present embodiment, the sheet 2 forms a cylindrical body portion by bonding the first and second sheet portions 2A and 2B in the bonding region R2.

  As shown in FIG. 1, two tear notches 4 are formed at the edge of the non-adhesion region R1 of the first sheet portion 2A with a gap therebetween. This interval is set to an interval that can be picked up with a finger, for example. In the present embodiment, an I notch is formed as the tear notch 4, but not limited to this, a V notch, U notch, turtle notch (home-base pentagonal notch with a triangular tip) ) Etc. In the present embodiment, two tear notches 4 are formed, but three or more tear notches may be formed, for example, a large number of V notches may be formed continuously.

  In the present embodiment, the lower side of the body portion is closed by adhering between the facing portions of the sheet 2 in the region R3 along the lower side of the sheet 2 in FIG. The bag body 1 according to the present embodiment is manufactured by, for example, a bag manufacturer and supplied to a manufacturer of stored items, and the manufacturer of the stored items and the like from the opening 3 at the upper portion of the trunk portion. After the contents are placed in the body portion, the facing portion of the sheet 2 is bonded in the region R4 along the upper side in FIG. The bag body according to the embodiment is completed. In the present embodiment, the bonding between the facing portions of the sheet 2 in the region R3 is realized by bonding the LLDPE layers 11 (to be described later) of the sheet 2 by heat sealing. Similarly, adhesion between the facing portions of the sheet 2 in the region R4 is also realized by adhesion by heat sealing between LLDPE layers 11 (to be described later) of the sheet 2. The contents are not limited in any way, and may be, for example, agricultural chemicals, foods, medicines, etc., or powders, liquids, solids, and the like.

  In the present embodiment, at least one of the first and second sheet portions 2A and 2B is in a tearing direction (FIG. 1) with respect to the non-bonding region R1 of the first sheet portion 2A between the two tear notches 4. In the adhesion region R2 aligned in the left direction in FIG. 3 to FIG. 3, the laminated region has two or more layers including the easily breakable layer. In the present embodiment, specifically, one sheet 2 including the first and second sheet portions 2A and 2B is laminated in order from the inside of the bag 1 as shown in FIG. A linear low-density polyethylene (LLDPE) layer 11 as a layer having a sealing property and an easily tearable property, and a horizontal uniaxial high-density polyethylene (HDPE) as a layer provided with a linear cut property in the left-right direction in FIGS. ) Layer 12, an aluminum (Al) layer 13 as a barrier layer having a barrier property, paper as an easily breakable layer 14, a low density polyethylene (LDPE) layer 15 as a layer having a heat seal property, and a non-heat seal It is a laminate film composed of a polyester (PET) layer 16 as a functional layer. However, in the present embodiment, in order to realize adhesion by heat sealing between the first and second sheet portions 2A and 2B in the adhesion region R2, the PE layer 15 is provided in the adhesion region R2 in the second sheet portion 2B. Is not covered with the PET layer 16. In the adhesion region R2, the LLDPE layer 11 of the first sheet portion 2A and the LDPE layer 15 of the second sheet portion 2B are adhered by heat sealing. In order to impart easy tearability to the PET layer 16, a PET layer that has been subjected to a known microporous treatment may be used. In addition, the configuration of each layer of the sheet 2 may be changed as appropriate according to characteristics required according to the contents (for example, necessity of gas barrier property, necessity of waterproof property, necessity of self-supporting property, etc.). Needless to say.

  In order to further improve the easy-openability, it is preferable that the first sheet portion 2A includes a layer having a straight cut property as in the present embodiment, but in the present invention, the straight cut property is not necessarily included. It is not necessary to include a layer with In that case, for example, a tear guide such as a perforation or a cut may be formed only on the outer layer on the extension line of the tear notch 4 as necessary.

  Note that the easily breakable layer 14 is not limited to paper, for example, a non-tacky easily breakable layer as disclosed in Japanese Patent No. 3477178 (for example, a binder, a filler and bubbles contained in the binder, and the like) Or polyester synthetic paper (for example, a polyester biaxially stretched film containing a cavity such as a product called “Crisper” manufactured by Toyobo Co., Ltd.). May be.

  Then, a tearing direction (left direction in FIGS. 1 to 3) in which the non-bonding region R1 of the first sheet portion 2A between the two tearing notches 4 is pinched and intersects with the first and second edges 2a and 2b. As shown in FIGS. 4 to 6, the picked side is separated from the remaining side in the adhesion region R2 aligned in the tearing direction by breaking the easily breakable layer 14 by pulling in the direction shown in FIG. In addition, the adhesive strength between the layers 11 to 16 of the first and second sheet portions 2A and 2B and the strength of the layers 11 to 16 are set.

  FIG. 4 is a diagram showing a state after the bag 1 shown in FIG. 1 is opened. The bag 1 is actually opened by a user of the stored item in a state where the stored item is stored therein and the upper opening 3 is closed to form a bag-packed body. However, for convenience of drawing notation, FIG. 4 shows the bag body 1 in an opened state with the upper opening 3 of the bag body 1 being opened. FIG. 5 is a schematic enlarged sectional view showing the opening process of the bag 1 shown in FIG. 1, and corresponds to FIG. 6 is a schematic enlarged cross-sectional view showing a state in which the bag body 1 shown in FIG. 1 has been opened more than the state shown in FIG. 5, and corresponds to FIG. 3 and FIG.

  When the container user or the like opens the bag 1 as a bag, the first and second non-adhesive regions R1 of the first sheet portion 2A between the two tear notches 4 are picked with fingers. When pulling in the tearing direction (left direction in FIGS. 1 to 3) intersecting the second edges 2a and 2b, first, the non-bonding region R1 of the first sheet portion 2A is extended so as to extend the tearing notch 4. After being torn, soon after the LDPE layer 15 of the second sheet portion 2B breaks in the vicinity of the left edge in FIG. 3 of the non-bonding region R1 of the first sheet portion 2A between the two tear notches 4 The easily destructible layer 14 is destroyed (FIG. 5). When the non-adhesion region R1 is further pulled in the left direction in FIGS. 1 to 3 and FIG. 5, the breakage of the easily breakable layer 14 further proceeds, and the first sheet portion 2A between the two tear notches 4 is not removed. In the adhesive region R2 aligned in the tearing direction (left direction in FIGS. 1 to 3) with respect to the adhesive region R1, the picked side is separated from the remaining side, and further, the tear notch 4 is extended. The first sheet portion 2A is torn into a strip shape (FIG. 6). When the non-bonding region R1 is further pulled in the left direction in FIGS. 1 to 3 and 5, the first sheet portion 2A is further torn into a band shape, and the bag body 1 is opened (FIG. 4).

  In the present embodiment, the adhesive region R2 is not located at the center of the bag body 1 in the left-right direction in FIG. 1, but is located closer to the right side (the right edge 2R of the body portion). By simply tearing the front side into a strip, it can be opened greatly.

  According to the present embodiment, since the first and second sheet portions 2A and 2B are formed in an envelope shape, as described above, the first sheet portion 2A between the two tear notches 4 is not removed. The bag body 1 can be opened by picking the adhesive region R1 and pulling it in the tearing direction (left direction in FIGS. 1 to 3) intersecting the first and second edges 2a and 2b. Therefore, according to the present embodiment, unlike a bag body provided with a palm seal such as the easy-open packaging material disclosed in Patent Document 1, the bonded portion does not stand up, so that Can be opened.

  In the present embodiment, at least one of the first and second sheet portions 2A and 2B is in a tear direction (see FIG. 2) with respect to the non-bonding region R1 of the first sheet portion 2A between the two tear notches 4. 1 to 3), the first sheet portion 2A is not bonded between the two tear notches 4 having a laminated structure of two or more layers including the easily breakable layer 14 in the bonding region R2 aligned in the left direction in FIG. By pulling the region R1 and pulling in the tear direction (left direction in FIGS. 1 to 3) intersecting with the first and second edges 2a and 2b, the easily breakable layer 14 is broken, so that the tear direction In the adhesion region R2 aligned in the left direction (FIG. 1 to FIG. 3), the layers 11 to 16 of the first and second sheet portions 2A and 2B are arranged so that the picked side is separated from the remaining side. Adhesive strength between and each layer 11-16 Strength has been set. Therefore, according to the present embodiment, the breakage of the easily breakable layer 14 is skillfully used at the time of opening, and the tensile force is applied to the easily breakable layer 14 in a linear shape instead of a planar shape. Since the destructive force concentrates, the easily destructible layer 14 is destroyed with a relatively small force. For this reason, according to this Embodiment, it can open with comparatively small force. On the other hand, unless the opening operation is performed, since the destructive force does not concentrate on the easily breakable layer 14, there is no possibility of unintentional opening. Further, according to the present embodiment, since the breakage of the easily breakable layer 14 is skillfully used at the time of opening, the adhesive strength between the respective layers 11 to 16 of the first and second sheet portions 2A and 2B and the easily breakable layer. Even if the strength of the layers 11 to 13, 15 and 16 other than 14 is high, they can be opened with a relatively small force. For this reason, according to this embodiment, since it can be opened with a relatively small force without using a weak seal or weak adhesion, the bag 1 can be opened with a relatively constant relatively small force with little variation among the bags 1. can do. In addition, according to the present embodiment, since it is not necessary to use weak seals or weak bonds, it is not necessary to perform strict management at the time of manufacturing so that variations in strength of the weak seals and weak bonds are reduced. Therefore, the manufacture of the bag body 1 is facilitated.

  Furthermore, according to the present embodiment, since the first and second sheet portions 2A and 2B constitute the same sheet 2, they can be easily manufactured.

  In the present embodiment, the first edge 2a of the first sheet portion 2A is not overlapped with the right end edge 2R of the body portion, but is disposed on the inner side from the right end edge 2R by a predetermined distance. For this reason, when the non-adhesive region R1 of the first sheet portion 2A between the two tear notches 4 is picked, the finger is guided using the surface of the bag body 1 as a guide and slides inside the non-adhesive region R1. The non-adhesion region R1 becomes easy to pick. However, in the present invention, the first edge 2a of the first sheet portion 2A may overlap with the right end edge 2R of the body portion. This also applies to each embodiment described later.

  Further, in the present embodiment, as described above, the tear direction is the left direction in FIGS. 1 to 3 (that is, the first sheet portion 2A is not bonded between the two tear notches 4). The bag body 1 is opened by picking the region R1 and pulling it in the left direction in FIGS. 1 to 3, but the left and right in FIGS. 1 to 3 are configured to be symmetrical. You may comprise so that the said tear direction may turn into the right direction in FIG. This also applies to each embodiment described later.

  [Second Embodiment]

  FIG. 7 is a schematic enlarged cross-sectional view showing a bag body according to the second embodiment of the present invention, and corresponds to FIG. 8 is a schematic enlarged cross-sectional view showing the opening process of the bag shown in FIG. 7, and corresponds to FIG. 9 is a schematic enlarged cross-sectional view showing a state in which the bag body shown in FIG. 7 has been opened more than the state shown in FIG. 8, and corresponds to FIG. 7 to 9, the same or corresponding elements as those in FIGS. 1 to 6 are denoted by the same reference numerals, and redundant description thereof is omitted.

  The bag body according to the present embodiment is different from the bag body 1 according to the first embodiment in that the laminated structure of one sheet 2 including the first and second sheet portions 2A and 2B and the bonding of each part. However, it is only the point that the adhesive bonding is adopted instead of the heat sealing bonding.

  In the present embodiment, one sheet 2 including the first and second sheet portions 2A and 2B is made of paper as an easily breakable layer 14 that is laminated in order from the inside of the bag as shown in FIG. And a low-density polyethylene (LDPE) layer 21. Also in the present embodiment, as in the first embodiment, the easily breakable layer 14 is not limited to paper. Also in the present embodiment, a layer having a linear cut property may be laminated on the sheet 2 as necessary.

  In the present embodiment, adhesion between the facing portions of the sheet 2 in the region R3 (see FIG. 1) is realized by bonding the easily breakable layers 14 of the sheet 2 with an adhesive (not shown). . Similarly, in the present embodiment, the bonding between the facing portions of the sheet 2 in the region R4 (see FIG. 1) is also realized by bonding the easily breakable layers 14 of the sheet 2 with an adhesive (not shown). Is done.

  In the present embodiment, the adhesive region 31 bonds the easily breakable layer 14 of the first sheet portion 2A and the LDPE layer 21 of the second sheet portion 2B in the bonding region R2.

  In the present embodiment, the tearing direction (FIGS. 1, 2 and 2) that picks up the non-adhesion region R1 of the first sheet portion 2A between the two tear notches 4 and intersects the first and second edges 2a, 2b. By pulling in the left direction in FIG. 7, the easily breakable layer 14 is broken, so that the pinched side remains in the adhesion region R2 aligned in the tear direction, as shown in FIGS. 8 and 9. The adhesive strength between the layers 14 and 21 of the first and second sheet portions 2A and 2B, the strength of the layers 14 and 21, and the adhesive strength of the adhesive 31 are set so as to be separated from the side.

  Also in this embodiment, the same advantages as those in the first embodiment can be obtained. In the present embodiment, as the adhesive 31, an ordinary strong adhesive can be used instead of a weak adhesive. The material of the adhesive 31 is not limited.

  In the present embodiment, as described above, the laminate film including the easily breakable layer 14 and the LDPE layer 21 is used as the sheet 2. However, the present invention is not limited to this. It goes without saying that the configuration of each layer of the sheet 2 may be changed as appropriate according to characteristics required according to the contents (for example, necessity of gas barrier property, necessity of waterproof property, necessity of self-supporting property, etc.). Yes. For example, when the sheet 2 is bonded with the adhesive 31 in the region R2 as in the present embodiment, any extruded laminate film may be used as long as the sheet 2 includes the easily breakable layer 14. You may use the arbitrary dry laminate films which adhered each other with the adhesive agent. Specifically, for example, a PET layer, a nylon layer, or a polypropylene layer may be used instead of the LDPE layer 21. Moreover, in the laminate film used as the sheet 2, for example, an adhesive interposed between the layers may be used for bonding the layers, or an LDPE layer interposed between the layers for bonding the layers. May be used.

  In the present invention, the present embodiment may be modified to reverse the order of the easily breakable layer 14 and the LDPE layer 21 in the sheet 2 to the order shown in FIG. In this case, in the same state as shown in FIG. 8 or the same state as shown in FIG. 9, the easily breakable layer 14 in the first sheet portion 2A is not destroyed, but in the second sheet portion 2B. The easily destructible layer 14 is destroyed. Also in this case, instead of the LDPE layer 21, a PET layer, a nylon layer or a polypropylene layer may be used.

  [Third Embodiment]

  FIG. 10 is a view showing a bag body 41 according to the third embodiment of the present invention, and corresponds to FIG. 10, elements that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and redundant descriptions thereof are omitted.

  The bag body 41 according to the present embodiment is different from the bag body 1 according to the first embodiment, in the bag body 1 according to the first embodiment, the cylindrical body portion made of one sheet 2 is provided. In contrast to the bag body 41 according to the present embodiment, which does not have the heel portion, the cylindrical body portion made of one sheet 2 has the heel portions 2C and 2D, and the gusset type bag body. It is only the point comprised as.

  Also in this embodiment, the same advantages as those in the first embodiment can be obtained. In the present invention, modifications similar to those obtained by modifying the first embodiment to obtain the second embodiment may be applied to the present embodiment.

  [Fourth Embodiment]

  FIG. 11 is a schematic front view showing a bag body 51 according to the fourth embodiment of the present invention. FIG. 12 is a schematic exploded perspective view of the bag 51 shown in FIG. 11 and 12, elements that are the same as or correspond to those in FIGS. 10 and 1 are given the same reference numerals, and redundant descriptions thereof are omitted. In FIG. 11, the illustration of the region corresponding to the region R4 in FIG. 10 is omitted.

  The bag 51 according to the present embodiment is also configured as a gusset-type bag similar to the bag 41 according to the third embodiment. The bag body 51 according to the present embodiment differs from the bag body 41 according to the third embodiment in that the body portion of the bag body 41 according to the third embodiment is composed of one sheet 2. On the other hand, in the bag body 51 according to the present embodiment, as shown in FIG. 12, the body portion includes a front surface portion including a sheet portion 2 </ b> A and a sheet portion 2 </ b> B, a heel portion 2 </ b> C, a heel portion 2 </ b> D, and a back surface portion. It is only a point which is divided into 2E and is constituted by another sheet, and these are constituted by heat sealing in the regions R5 and R6 on both sides.

  This embodiment can provide the same advantages as those of the third embodiment. In the present invention, modifications similar to those obtained by modifying the first embodiment to obtain the second embodiment may be applied to the present embodiment.

  [Fifth Embodiment]

  FIG. 13: is a schematic perspective view which shows the state which opened the opening part 3 moderately of the bag body 61 by the 5th Embodiment of this invention. FIG. 14 is a schematic perspective view showing a state in the middle of the folding of the bag body 61 shown in FIG. FIG. 15 is a schematic perspective view showing a state in which an article (not shown) is accommodated in the bag body 61 shown in FIG. 13 and the opening 3 is closed to form a bag-packed body. 13 to 15, the same or corresponding elements as those in FIG. 10 are denoted by the same reference numerals, and redundant description thereof is omitted.

  The bag body 61 according to the present embodiment is different from the bag body 41 according to the third embodiment. Basically, the bag body 41 according to the third embodiment does not have a corner bottom. In addition, the lower side of the body portion is closed by bonding between the facing portions of the sheet 2 in the region R3, whereas the lower side of the body portion is closed in the bag body 61 according to the present embodiment. It is only a point provided with a square bottom portion 2F and configured as a square bottom bag. The bottom 2F is formed by folding the lower portion of the same sheet 2 that is the same as the body, as is known, and bonding the predetermined portion with heat seal or adhesive. However, the detailed illustration thereof is omitted.

  In the present embodiment, after the contents are accommodated in the bag body 61, for example, a portion on the side of the opening 3 that is flattened by folding the heel portions 2C and 2D so that the opening 3 is closed is imagined. A winding / folding portion 2G is formed by being folded twice along the lines L1 and L2. Although not shown in the drawing, predetermined portions are bonded with an adhesive so that the folded portion 2G maintains the folded state. In order to make the closed state of the opening portion 3 more complete, the portions facing each other in the region along the upper side (corresponding to the region R4) are heat-sealed in the same manner as the bag body 41 shown in FIG. The winding / folding portion 2G may be formed. Alternatively, the opening 3 is closed by heat-sealing the facing portions in the region along the upper side (corresponding to the region R4) without forming the folded portion 2G. May be.

  This embodiment can provide the same advantages as those of the third embodiment. In the present invention, modifications similar to those obtained by modifying the first embodiment to obtain the second embodiment may be applied to the present embodiment.

  [Sixth Embodiment]

  FIG. 16 is a schematic enlarged cross-sectional view showing a bag body according to the sixth embodiment of the present invention, and corresponds to FIG. In FIG. 16, the same or corresponding elements as those in FIGS. 1 to 6 are denoted by the same reference numerals, and redundant description thereof is omitted.

  The bag body according to the present embodiment is different from the bag body 1 according to the first embodiment in that the laminated structure of one sheet 2 including the first and second sheet portions 2A and 2B and the bonding of each part. However, it is only the point that the adhesive bonding is adopted instead of the heat sealing bonding.

  In the present embodiment, as shown in FIG. 16, one sheet 2 including the first and second sheet portions 2A and 2B is a paper 71 that forms an easily destructible layer that is laminated in order from the inside of the bag. A low-density polyethylene (LDPE) layer 72, a lateral uniaxial high-density polyethylene (HDPE) layer 73 as a layer to which linear cutability is imparted in the left-right direction in FIG. 16, and a low-density polyethylene (LDPE) layer 74 The laminate film is made of paper 75 that forms an easily breakable layer. The laminate film can be manufactured by, for example, extrusion lamination in which a molten PE layer 72 is poured between the paper 71 and the HDPE layer 73 and a molten PE layer 74 is poured between the HDPE layer 73 and the paper 75. it can. The paper 71 and the paper 75 may have the same inter-sheet strength, or may have different inter-paper strength.

  In the present embodiment, the bonding between the facing portions of the sheet 2 in the region R3 (see FIG. 1) is realized by bonding the paper 71 of the sheet 2 with an adhesive (not shown). Similarly, in the present embodiment, the bonding between the facing portions of the sheet 2 in the region R4 (see FIG. 1) is also realized by bonding the sheets 71 of the sheet 2 with an adhesive (not shown). .

  In the present embodiment, the paper 71 of the first sheet portion 2A and the paper 75 of the second sheet portion 2B are bonded by the adhesive 76 in the bonding region R2.

  In the present embodiment, the tearing direction (FIGS. 1, 2 and 2) that picks up the non-adhesion region R1 of the first sheet portion 2A between the two tear notches 4 and intersects the first and second edges 2a, 2b. By pulling in the left direction in FIG. 16, the paper 71 or the paper 75 is broken, so that the picked side is separated from the remaining side in the adhesive region R2 aligned in the tearing direction. The adhesive strength between the layers 71 to 75 of the first and second sheet portions 2A and 2B, the strength of the layers 71 to 75, and the adhesive strength of the adhesive 76 are set.

  Also in this embodiment, the same advantages as those in the first embodiment can be obtained. Further, according to the present embodiment, since the adhesion by the adhesive 76 between the first sheet portion 2A and the second sheet portion 2B is the adhesion between the papers 71 and 75, the adhesion is performed firmly. This makes it easy to prevent the adhesive 76 from leaking from the edges of the sheet portions 2A and 2B.

  In this embodiment, as the adhesive 76, a normal strong adhesive can be used instead of a weak adhesive. The material of the adhesive 76 is not limited.

  [Seventh Embodiment]

  FIG. 17 is a view showing a bag body 81 according to the seventh embodiment of the present invention, and corresponds to FIG. In FIG. 17, the same or corresponding elements as those in FIG. 1 are denoted by the same reference numerals, and redundant description thereof is omitted.

  The bag body 81 according to the present embodiment is different from the bag body 1 according to the first embodiment in that linear cutting is imparted to one sheet 2 including the first and second sheet portions 2A and 2B. The HDPE layer 12 as the formed layer is removed, and the sheet 2 is laminated in order from the inside of the bag body 1, the LLDPE layer 11, the Al layer 13, the paper as the easily breakable layer 14, the LDPE layer 15, In the first sheet portion 2A, on the extension line of at least one tear notch 4 in the first sheet portion 2A, the tear film 4 is a tear film. This is only a point where a perforation 82 serving as a guide is formed.

  Also in this embodiment, the same advantages as those in the first embodiment can be obtained. Further, according to the present embodiment, since the perforation 82 is formed in the first sheet portion 2A, the first sheet portion 2A does not include the HDPE layer 12 as a layer having a linear cut property. Nevertheless, easy-openability can be further improved.

  In addition, it replaces with the perforation 82 as a guide for tearing, and the continuous or intermittent half-punch line may be formed. Such lines and perforations 82 may be realized, for example, by thinning or cutting by laser processing, or may be realized by punching or half punching with a blade.

  In the present embodiment, the HDPE layer 12 may be provided in the sheet 2 as in the first embodiment.

  [Eighth Embodiment]

  FIG. 18 is a view showing a bag body 91 according to the eighth embodiment of the present invention, and corresponds to FIG. 1 and FIG. 1 and 17 show the upper opening 3 in a slightly opened state, but FIG. 18 shows the upper opening 3 in an unopened state. FIG. 19 is a schematic cross-sectional view along the line D-D ′ in FIG. 18. Although not shown in the drawing, the schematic cross-sectional view along the line C-C ′ in FIG. 18 is the same as FIG. 2.

  18 and 19, elements that are the same as or correspond to those in FIGS. 1, 2, and 17 are assigned the same reference numerals, and redundant descriptions thereof are omitted.

  The bag body 91 according to the present embodiment is different from the bag body 1 according to the seventh embodiment in the region between the two tear notches 4 in the first sheet portion 2A and in the tear direction with respect to this. In a region excluding the aligned region, a sheet 92 attached to the outer surface of the first and second sheet portions 2A and 2B so as to straddle the first edge 2a is added. The sheet 92 may be bonded with an adhesive (not shown), or may be bonded by heat sealing if heat sealing is possible. The material of the sheet 92 is not limited at all, and the sheet 92 may be composed of only one layer or may be composed of two or more layers. In order to facilitate understanding, in FIG. 18 and FIG. 19, a dot pattern is given to the sheet 92. The sheet 92 may be, for example, a label or a seal. In the present embodiment, the sheet 92 is affixed to the first sheet portion 2A so as to extend from the adhesion region R2 to the left region in FIG. 18, but the present invention is not necessarily limited thereto. In the present embodiment, the upper side of the sheet 92 in FIG. 18 is disposed near the lower perforation 82, but the present invention is not limited to this.

  Also in this embodiment, the same advantages as in the seventh embodiment can be obtained. Moreover, according to this Embodiment, since it reinforces with the stuck sheet | seat 92, the broken bag by misopening etc. can be prevented. This point will be described below in comparison with the bag body 81 according to the seventh embodiment.

  In the bag body 81 according to the seventh embodiment, when opening, the force at the time of pinching and pulling the non-bonding region R1 of the first sheet portion 2A between the two tear notches 4 is the tearing direction (FIG. 18). When applied in the diagonally lower left direction in FIG. 18 which is oblique to the middle left direction), it should originally be torn and opened in the same manner as shown in FIG. There is a possibility that destruction of the easily breakable layer 14 may proceed from the vicinity of the lower perforation 82 to the lower side, and the bag body 81 may be broken. Further, in the bag body 81 according to the seventh embodiment, even when the bag is properly opened as in FIG. 4, a finger is inserted between the perforations 82 that are opened by the opening, and the portion is lowered. If pulled to the side, destruction of the easily breakable layer 14 proceeds from the vicinity of the lower perforation 82 to the lower side in the bonding region R2, and the bag body 81 may be broken. .

  On the other hand, since the bag body 91 according to the present embodiment is reinforced by the attached sheet 92, it is difficult to cause such bag breakage.

  Although this embodiment is an example in which the sheet 92 is attached in the seventh embodiment, in the present invention, even if a sheet similar to the sheet 92 is attached in the first to sixth embodiments. Good.

  [Ninth Embodiment]

  FIG. 20 is a schematic perspective view showing a state in which an object (not shown) is accommodated in the bag body 101 according to the ninth embodiment of the present invention and the opening is closed to form a bag-packed body, This corresponds to FIG. 20, elements that are the same as or correspond to those in FIG. 15 are given the same reference numerals, and redundant descriptions thereof are omitted.

  Where the bag body 101 according to the present embodiment is different from the bag body 61 according to the fifth embodiment, the tear notch 4 is not formed at the edge of the non-adhesive region R1 of the first sheet portion 2A. Is a point. In the present embodiment, the first sheet portion 2A and the second sheet portion 2B are not bonded to each other in the non-bonding region R1, but the first sheet portion 2A and the second sheet portion are also bonded in the region R1. 2B may be bonded, and the first sheet portion 2A and the second sheet portion 2B may be bonded to each other in the entire overlapping region. Adhesion between the first sheet portion 2A and the second sheet portion 2B may be adhesion by an adhesive, or may be adhesion by heat sealing if heat sealing is possible.

  In the present embodiment, the body portion of the bag body 101 is composed of a single sheet that has a layer having a linear cut property in the lateral direction of the body portion and can be torn in the lateral direction. Each of the second sheet portions is a part of the one sheet. Specifically, the configuration of this sheet may be, for example, the configuration shown in FIG. 3 or the configuration shown in FIG. 16, or paper stacked in order from one side, an adhesive layer, and a horizontal uniaxial high density. A dry laminate film made of a polyethylene (HDPE) layer, an adhesive layer and paper may be used, and an aluminum foil or a film having a barrier property may be included as necessary.

  According to the present embodiment, the trunk portion is composed of a single sheet that has a layer having a linear cut property in the lateral direction of the trunk portion and can be torn in the lateral direction. In FIG. 20, the front and back near the location R100 are picked with the left finger and the front and back near the location R101 are picked with the right finger and torn along the line L100 from the point P100, thereby opening the upper portion from the line L100. can do. Therefore, according to the present embodiment, it can be opened with a relatively small force, and there is no possibility that it will be opened carelessly.

  In addition, according to the present embodiment, since the first and second sheet portions are formed in an envelope-pasting shape, a hand-sealed sticker seal such as the easy-open packaging material disclosed in Patent Document 1 is applied. Unlike the bag body, the bonded portion does not stand up and can be easily opened.

  As mentioned above, although each embodiment of this invention and its modification were demonstrated, this invention is not limited to these. For example, the present invention can be applied to other forms of bags such as a standing pouch. In the present invention, the above-described embodiments and modifications thereof can be appropriately combined.

1, 41, 51, 61, 81, 91, 101 Bag 2 Sheet 2A First sheet portion 2B Second sheet portion 2a First edge 2b Second edge 3 Opening portion R1 Non-adhesion region R2 Adhesion region

Claims (22)

A bag body having a cylindrical body that is closed at one end side and opened at the other end side,
The body portion has a first sheet portion having a first edge extending from the one end portion side to the other end portion side, and a second edge extending from the one end portion side to the other end portion side. A second sheet portion,
The region on the first edge side of the first sheet portion and the region on the second edge side of the second sheet portion make the first sheet portion outside and the second sheet portion. With the inside facing in an envelope
Between the regions of the first and second sheet portions superimposed in the envelope pasting shape, at least a part of the edge region along the first edge of the first sheet portion is defined as a non-adhesive region. In the bonded area except,
Two tear notches are formed at the edges of the non-adhesive region of the first sheet portion, spaced apart,
At least one of the first and second sheet portions includes an easily breakable layer in the adhesive region aligned in the tear direction with respect to the non-adhesive region of the first sheet portion between the two tear notches. Having a laminated structure of two or more layers including,
By picking the non-adhesive region of the first sheet portion between the two tear notches and pulling in the tear direction intersecting the first and second edges, the easily breakable layer is destroyed. The adhesive strength between each layer of the first and second sheet portions and the strength of each layer are set so that the picked side is separated from the remaining side in the adhesive region aligned in the tearing direction. ,
A bag characterized by that.   2. The bag according to claim 1, wherein the body portion is composed of one sheet, and each of the first and second sheet portions is a part of the one sheet.   The bag according to claim 1 or 2, wherein the easily breakable layer is paper.   The bag according to any one of claims 1 to 3, wherein the adhesion between the adhesion regions of the first and second sheet portions superimposed in the envelope pasting form is adhesion by heat sealing. .   The bag according to any one of claims 1 to 3, wherein the adhesion between the adhesion regions of the first and second sheet portions overlapped in the envelope pasting manner is adhesion by an adhesive. . The layer on the adhesive side of the adhesive region of the first sheet portion is paper;
The layer on the adhesive side in the adhesive region of the second sheet portion is paper;
At least one of the layer on the adhesive side in the adhesive region of the first sheet portion and the layer on the adhesive side in the adhesive region of the second sheet portion is the easily breakable layer. Eggplant,
The bag according to claim 5.   In the first sheet portion, a perforation serving as a tear guide or a continuous or intermittent half-cut line is formed on an extension line of at least one of the two tear cuts. The bag according to any one of claims 1 to 6, characterized in that   In the region between the two tear notches in the first sheet portion and in the region excluding the region aligned in the tear direction, the first and second edges extend across the first edge. The bag according to any one of claims 1 to 7, further comprising a sheet attached to an outer surface of the sheet portion. A bag body having a cylindrical body that is closed at one end side and opened at the other end side,
The body portion has a first sheet portion having a first edge extending from the one end portion side to the other end portion side, and a second edge extending from the one end portion side to the other end portion side. A second sheet portion,
The region on the first edge side of the first sheet portion and the region on the second edge side of the second sheet portion make the first sheet portion outside and the second sheet portion. With the inside facing in an envelope
Between the regions of the first and second sheet portions superimposed in the envelope pasting shape, in the adhesion region that is the entire region or a partial region of the superimposed region,
The trunk portion is composed of one sheet having a layer having a linear cut property in the lateral direction of the trunk portion and being tearable in the lateral direction,
The first and second sheet portions are each part of the one sheet;
A bag characterized by that. Adhesion between the adhesion regions between the first and second sheet portions superimposed in the envelope pasting shape is adhesion by an adhesive,
The layer on the adhesive side of the adhesive region of the first sheet portion is paper;
The layer on the adhesive side in the adhesive region of the second sheet portion is paper;
The bag according to claim 9.   The bag body according to any one of claims 1 to 10, wherein the bag body is a square bottom bag having a square bottom portion that closes the one end side of the trunk portion. In a bag body having a cylindrical body portion closed on one end side and the other end side, a bag stuffed body containing a desired container,
The body portion has a first sheet portion having a first edge extending from the one end portion side to the other end portion side, and a second edge extending from the one end portion side to the other end portion side. A second sheet portion,
The region on the first edge side of the first sheet portion and the region on the second edge side of the second sheet portion make the first sheet portion outside and the second sheet portion. With the inside facing in an envelope
Between the regions of the first and second sheet portions superimposed in the envelope pasting shape, at least a part of the edge region along the first edge of the first sheet portion is defined as a non-adhesive region. In the bonded area except,
Two tear notches are formed at the edges of the non-adhesive region of the first sheet portion, spaced apart,
At least one of the first and second sheet portions includes an easily breakable layer in the adhesive region aligned in the tear direction with respect to the non-adhesive region of the first sheet portion between the two tear notches. Having a laminated structure of two or more layers including,
By picking the non-adhesive region of the first sheet portion between the two tear notches and pulling in the tear direction intersecting the first and second edges, the easily breakable layer is destroyed. The adhesive strength between each layer of the first and second sheet portions and the strength of each layer are set so that the picked side is separated from the remaining side in the adhesive region aligned in the tearing direction. ,
A bag-packed body characterized by that.   The bagging body according to claim 12, wherein the body portion is composed of one sheet, and each of the first and second sheet portions is a part of the one sheet.   The bagging body according to claim 12 or 13, wherein the easily breakable layer is paper.   The bagging according to any one of claims 12 to 14, wherein the adhesion between the adhesion regions of the first and second sheet portions overlapped in the envelope pasting form is adhesion by heat sealing. body.   The bagging according to any one of claims 12 to 14, wherein the adhesion between the adhesion regions of the first and second sheet portions overlapped in the envelope pasting manner is adhesion by an adhesive. body. The layer on the adhesive side of the adhesive region of the first sheet portion is paper;
The layer on the adhesive side in the adhesive region of the second sheet portion is paper;
At least one of the layer on the adhesive side in the adhesive region of the first sheet portion and the layer on the adhesive side in the adhesive region of the second sheet portion is the easily breakable layer. Eggplant,
The bagging body according to claim 16, wherein   In the first sheet portion, a perforation serving as a tear guide or a continuous or intermittent half-cut line is formed on an extension line of at least one of the two tear cuts. The bagging body according to any one of claims 12 to 17, wherein   In the region between the two tear notches in the first sheet portion and in the region excluding the region aligned in the tear direction, the first and second edges extend across the first edge. The bagging body according to any one of claims 12 to 18, further comprising a sheet attached to an outer surface of the sheet portion. In a bag body having a cylindrical body portion closed on one end side and the other end side, a bag stuffed body containing a desired container,
The body portion has a first sheet portion having a first edge extending from the one end portion side to the other end portion side, and a second edge extending from the one end portion side to the other end portion side. A second sheet portion,
The region on the first edge side of the first sheet portion and the region on the second edge side of the second sheet portion make the first sheet portion outside and the second sheet portion. With the inside facing in an envelope
Between the regions of the first and second sheet portions superimposed in the envelope pasting shape, in the adhesion region that is the entire region or a partial region of the superimposed region,
The trunk portion is composed of one sheet having a layer having a linear cut property in the lateral direction of the trunk portion and being tearable in the lateral direction,
The first and second sheet portions are each part of the one sheet;
A bag-packed body characterized by that. Adhesion between the adhesion regions between the first and second sheet portions superimposed in the envelope pasting shape is adhesion by an adhesive,
The layer on the adhesive side of the adhesive region of the first sheet portion is paper;
The layer on the adhesive side in the adhesive region of the second sheet portion is paper;
21. A bag according to claim 20, wherein   The bagging body according to any one of claims 12 to 21, wherein the bag body is a square bottom bag having a square bottom portion that closes the one end side of the body portion.

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