JPWO2014045777A1 - Mouth-shaped bag with adhesive tape - Google Patents

Abstract

Provided is a bag with a pressure-sensitive adhesive tape that can be sealed and manufactured efficiently. a) A heat seal portion including a resin sheet (12) that is folded or superimposed, and a portion of the resin sheet (12) facing each other is heated and bonded along a pair of sides (10s, 10t) ( 21) one main surface (14n) is bonded to the bag-shaped main body formed with b) and the inner surface (12n) of the resin sheet (12), and is continuous between the pair of sides (10s, 10t). Between the adhesive layer (14) and the other main surface (14m) of the adhesive layer (14) so as to be peelable and covering the adhesive layer (14), between the pair of sides (10s, 10t) Between the continuous release tape (16) and d) outer surfaces (10a, 10b) of the main body, both ends of the release tape (16) and the adhesive layer (14) and the resin sheet (12) are obtained by ultrasonic bonding. And a pair of ultrasonic bonding portions (20) bonded together. Provided. The ultrasonic bonding part (20) overlaps or is adjacent to the heat seal part (21).

Description

  The present invention relates to a bag with an adhesive tape having a joint shape, and more particularly to a bag with an adhesive tape having an adhesive tape provided on the inner surface of the bag for sealing.

  Conventionally, various bags sealed along a pair of sides have been proposed.

  As what can be easily sealed, for example, a tongue piece portion that is bent and covers the opening or a portion that is covered with the tongue piece portion and that has an adhesive tape is proposed (for example, Patent Document 1 (FIG. 1 1, see FIG. 4)). Further, there has been proposed one in which a chuck tape is attached to the inner surface of the bag along the opening (for example, see Patent Document 2 (reference numeral 11 in FIGS. 2, 4, and 5)).

JP 2008-273559 A JP 2007-191200 A

  As a so-called “matching bag” that seals the inner surfaces of the bags together, a bag to which a chuck tape is attached is common, and a bag with a seal using an adhesive tape has not been put into practical use. That is, a bag with an adhesive tape having an adhesive tape on the inner surface of the bag has not been put to practical use.

  For example, as shown in FIG. 10A, which is a plan view, and FIG. 10B, which is a cross-sectional view taken along line XX in FIG. 10A, the resin sheet 12 along the lower side 10n. Is folded in half, and the bag-like bag 10x having an opening along the upper side 10m is fused in a state where the resin sheet material is folded, thereby forming the heat seal portion 21 along the pair of sides 10s and 10t. it can. When the adhesive tape is melted together with the resin sheet material in a state where the adhesive tape is attached to the resin sheet material, a pair of adhesive tapes 13 having the adhesive layer 14 formed on one surface of the release tape 16 is formed on the inner surface 12n of the bag 10x. Can be pasted over the entire width between the sides 10s and 10t. When fusing is used in this way, the bag 10x can be efficiently manufactured.

  However, even if the opposing portions of the resin sheet 12 can be satisfactorily sealed by the combination of the materials of the resin sheet 12, the release tape 16, and the adhesive layer 14, the release tape 16, the adhesive layer 14, and the resin sheet 12 are The overlapping portion 30x may not be bonded even if it is melted. In this case, the bag 10x is easily broken from the poorly sealed portion 30x and may not be sealed.

  It is also conceivable to attach the adhesive tape 13 apart from the pair of sides 10s and 10t so that the poorly sealed portion 30x cannot be formed. However, if a gap is formed between the portion where the portions of the resin sheet 12 facing each other are sealed and the both ends of the adhesive tape 13, sealing cannot be performed. It is difficult to mass-produce bags so that there is no such gap.

  It is also conceivable to apply an adhesive or attach another member to the outside of the bag so as to cover the poorly sealed portion 30x. However, even if it can be sealed, the bag looks bad and the manufacturing process is complicated.

  On the other hand, depending on the combination of the materials of the resin sheet 12, the release tape 16 and the adhesive layer 14, there may be a case where the portion 30x where the release tape 16 and the adhesive layer 14 and the resin sheet 12 overlap can be bonded together by fusing. . In this case, since both ends of the release tape 16 are bonded to the resin sheet 12, even if the release tape 16 is peeled off from the adhesive layer 14, the release tape 16 cannot be separated from the bag. If the release tape 16 is forcibly separated from the bag, the bag is torn.

  Therefore, a bag with an adhesive tape having an adhesive tape on the inner surface of the bag has not been put into practical use.

  In view of such circumstances, the present invention is intended to provide a bag with an adhesive tape that can be sealed and can be efficiently manufactured.

  In order to solve the above-mentioned problems, the present invention provides a bag with an adhesive tape having a fitting shape configured as follows.

  Mouth-shaped adhesive tape-attached bag includes (a) a resin sheet that is folded or overlaid, and heat-sealed portions that are bonded together by heating portions facing each other along the pair of sides. A bag-shaped main body having an opening formed on one end side of the pair of sides and a bottom formed on the other end side of the pair of sides; and (b) the opening of the resin sheet facing each other. One main surface is bonded to one of the inner surfaces forming the adhesive layer, and the adhesive layer is continuous between the pair of sides; and (c) is peelably bonded to the other main surface of the adhesive layer and A release tape that covers the adhesive layer and is continuous between the pair of sides; and (d) the release tape, both ends of the adhesive layer, and the resin by ultrasonic bonding between the outer surfaces of the main body. A pair of ultrasonic bonding parts bonded to each other That. The ultrasonic bonding portion overlaps or is adjacent to the heat seal portion.

  In the above-described configuration, the opening can be closed and sealed by adhering the other of the inner surfaces of the resin sheet facing each other and forming the opening to the adhesive layer exposed by peeling off the release tape. Since the release tape is bonded to the resin sheet at the ultrasonic bonding part, when the ultrasonic bonding part is overlapped with the heat seal part or formed adjacent to the heat seal part, the bag with the adhesive tape of the mating shape is It can be reliably sealed.

  According to the said structure, the adhesive tape for forming a release tape and an adhesion layer is affixed on a sheet | seat material before the process of fusing the sheet | seat material for forming a main body and forming a heat seal part, for example By simply adding a process and a process of forming an ultrasonic bonding part, a bag-shaped adhesive tape-attached bag can be efficiently manufactured. Alternatively, before the heat sealing step of forming a heat seal portion by heat sealing on the sheet material, a step of attaching an adhesive tape to the sheet material is added, and between the heat sealing step and the step of cutting the sheet material, By simply adding a process for forming an ultrasonic bonding portion, a bag with an adhesive tape with a joint shape can be efficiently manufactured.

  Preferably, the ultrasonic bonding portion includes (a) a boundary line that crosses the side of the release tape away from the heat seal portion, and (b) only the extension portion of the resin sheet extends along the boundary line. And an extension portion that is sonically bonded and is in contact with the side of the release tape.

  In this case, the release tape is easily broken along the boundary line of the ultrasonic bonding portion when peeled off from the adhesive layer.

  The ultrasonic bonding portion may protrude only on one side of the release tape or on both sides. When the ultrasonic bonding part protrudes on both sides of the release tape, the release tape may be peeled off from the bottom of the main unit toward the opening, or vice versa. The mold tape is easily broken along the boundary of the ultrasonic joint.

  Preferably, the main body has a gusset portion where the resin sheet is folded inward on the other end side of the pair of sides.

  In this case, since the area of the bottom of the bag with the adhesive tape with the matching shape is large, it is suitable for storing objects having a three-dimensional shape, and is easily self-supporting in the stored state.

  Preferably, the resin sheet has a bent portion along the opening.

  In this case, the opening side of the bag with the adhesive tape having a matching shape is likely to spread when sealed by the bent portion. Therefore, it is suitable for storing an object having a three-dimensional shape.

  The bag with a self-adhesive tape of the present invention can be sealed and can be produced efficiently.

It is (a) top view and (b) sectional view of a bag. Example 1 It is sectional drawing of a bag. Example 1 It is the schematic which shows the manufacturing process of a bag typically. Example 1 It is a principal part top view of a bag. (Modifications 1 and 2) It is the schematic of an ultrasonic junction part. (Modifications 3 to 6) It is a top view of a bag. (Example 2) It is a principal part top view of a bag. (Modifications 7 to 9) It is a partial cross section perspective view of a bag. (Modification 10) It is a partial cross section perspective view of a bag. (Modifications 11 and 12) It is (a) top view and (b) sectional view of a bag. (Example)

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  <Example 1> A bag-shaped adhesive tape-equipped bag 10 (hereinafter simply referred to as "bag 10") of Example 1 will be described with reference to FIGS.

  FIG. 1A is a plan view of the bag 10. FIG.1 (b) is sectional drawing cut | disconnected along line XX of Fig.1 (a). Fig.2 (a) is sectional drawing cut | disconnected along line AA of Fig.1 (a). FIG. 2B is a cross-sectional view taken along line BB in FIG.

  As shown in FIG.1 and FIG.2, the bag 10 is formed in the bag shape using the resin sheet 12 folded up. As shown in FIG. 2, the resin sheet 12 is folded in a substantially W shape, and the first portion 12 a and the second portion 12 b that are folded and face each other to form the outer surfaces 10 a and 10 b of the bag 10, It includes a gusset portion 12c that is folded inward between the first portion 12a and the second portion 12b.

  As shown in FIG. 1A, the outer surfaces 10a and 10b of the bag 10 have a rectangular shape. The first portion 12 a and the second portion 12 b of the resin sheet 12 are heated and bonded to the bag 10 along the pair of sides 10 s and 10 t to form a heat seal portion 21. As shown in FIGS. 1A and 2, an opening 10z is formed along an upper side 10m between one ends 10p and 10q of a pair of sides 10s and 10t. A bottom is formed along the lower side 10n between the other ends 10u, 10v of the pair of sides 10s, 10t.

  As shown in FIG. 2A, an adhesive tape 13 is attached to the inner surface 12n of the second portion 12b of the resin sheet 12 (that is, the surface opposite to the outer surface 10b of the bag 10). Specifically, one main surface 14n of the adhesive layer 14 of the adhesive tape 13 is bonded to the inner surface 12n of the second portion 12b of the resin sheet 12. As shown in FIG. 1, the adhesive layer 14 is continuous between the pair of sides 10s and 10t, and both ends of the adhesive layer 14 reach the pair of sides 10s and 10t. In the adhesive tape 13, a release tape 16 is detachably bonded to the other main surface 14 m of the adhesive layer 14, and the release tape 16 covers the adhesive layer 14. As shown in FIG. 1, the release tape 16 is also continuous between the pair of sides 10s and 10t, and both ends of the release tape 16 reach the pair of sides 10s and 10t. When the release tape 16 is peeled off and the other main surface 14m of the exposed adhesive layer 14 is bonded to the inner surface 12m of the first portion 12a of the resin sheet 12 (the surface opposite to the outer surface 10a of the bag 10), the bag 10 is The closed state can be maintained.

  As schematically shown in FIG. 1 and FIG. 2 (b), the bag 10 has both ends (that is, in FIG. 1) of the release tape 16 and the adhesive layer 14 by ultrasonic bonding between the outer surfaces 10a and 10b. A pair of ultrasonic bonding portions 20 are formed in which the left and right ends and the vicinity thereof) and the resin sheet 12 are bonded to each other. The ultrasonic bonding part 20 enables the bag 10 to be reliably sealed. For example, the PP (polypropylene) resin sheet 12 and the PE (polyethylene) release tape 16 cannot be bonded by fusing to form the heat seal portion 21, but are bonded by ultrasonic bonding. Can do.

  That is, the heat seal portion 21 is formed by bonding portions softened by heat when the sheet material of the resin sheet 12 is fused along the sides 10 s and 10 t of the bag 10. When fusing, the release tape 16 and the pressure-sensitive adhesive tape 13 forming the pressure-sensitive adhesive layer 14 can be cut at the same time, but the release tape 16 may not be adhered to the resin sheet 12 even when softened by heat. is there. In this case, as shown in FIG. 1A, the portion 30x in which the release tape 16 is sandwiched between the first portion 12a and the second portion 12b of the resin sheet 12 cannot be sealed. Therefore, for example, when the release tape 16 is peeled off, the heat seal portion 21 is peeled off from the first portion 12a and the second portion 12b of the resin sheet 12 at a portion adjacent to the release tape 16, and the bag 10 May not be able to be sealed. When the ultrasonic bonding portion 20 is formed, the bag 10 can be reliably sealed.

  In order to ensure the sealing of the bag 10, it is preferable to form the ultrasonic bonding portion 20 so as to cross both the side sides 16s and 16t of the release tape 16 along the pair of sides 10s and 10t. . That is, the ultrasonic bonding portion 20 includes (a) boundary lines 20s and 20t that are separated from the heat seal portion 21 and cross the side edges 16s and 16t of the release tape 16, and (b) along the boundary lines 20s and 20t. In addition, it is preferable that only the resin sheet 12 is ultrasonically bonded and formed so as to include the extended portions 20x and 20y in contact with the sides 16s and 16t of the release tape 16.

  For example, since the PE (polyethylene) release tape 16 stretches even when pulled, it is difficult to break at a desired position as it is, but it crosses the side edges 16s and 16t of the release tape 16 as described above. When the ultrasonic bonding portion 20 is formed, it can be easily broken without leaving a stretched piece along the boundary lines 20s and 20t.

  In addition, it is preferable to form the ultrasonic bonding portion 20 so as to overlap the heat seal portion 21 or adjacent to the heat seal portion 21.

  As shown in FIG. 1, when the ultrasonic bonding portion 20 is formed so as to cross the side edges 16s and 16t of the release tape 16, the first portion 12a of the resin sheet 12 is removed when the release tape 16 is peeled off. The release tape 16 is easily broken along the boundary lines 20s and 20t of the ultrasonic bonding portion 20 formed between the first portion 12b and the second portion 12b, and the other main surface 14m of the adhesive layer 14 is ultrasonic bonded. All parts between the parts 20 are exposed. Therefore, the adhesive layer 14 can be continuously bonded between the ultrasonic bonding portions 20 to the inner surface 12m of the first portion 12a of the resin sheet 12, and the space between the ultrasonic bonding portions 20 can be reliably sealed.

  Further, since the ultrasonic bonding portion 20 crosses the side edges 16s and 16t of the release tape 16, even if the release tape 16 is peeled from the lower edge 10n toward the upper edge 10m, the upper edge 10m is directed toward the lower edge 10n. Even if it peels off, the release tape 16 is torn along the boundary lines 20s and 20t of the ultrasonic bonded portion 20. Therefore, regardless of the direction in which the release tape 16 is peeled off, all the portions of the other main surface 14m of the adhesive layer 14 can be exposed between the ultrasonic bonding portions 20, and the space between the ultrasonic bonding portions 20 can be reliably secured. Can be sealed.

  Since the bottom area of the bag 10 is increased by the gusset portion 12c, the bag 10 is suitable for storing a three-dimensional object, and is easily self-supported in the stored state.

  It should be noted that other configurations such as eliminating the gusset portion and simply folding the resin sheet in a substantially V-shaped cross section may be employed.

  When the resin sheet 12 is folded and formed into a bag shape, the resin sheet 12 is continuous at the bottom of the bag 10, and it is easy to ensure the strength of the bottom of the bag 10, which is preferable. However, instead of folding the resin sheet 12 and forming it in a bag shape, a plurality of resin sheets may be stacked and bonded together along the side except for the opening to form a bag shape.

  If the bag is rectangular, it is preferable because the material is not wasted, but it is also possible to make the bag other than a rectangle. In this case, the pair of sides 10s and 10t may be formed in a curved shape, for example.

  The resin sheet 12 may be transparent, opaque, or translucent, and may be printed with characters, graphics, or the like as necessary. The resin sheet 12 may be formed with a circular through-hole for hanging the bag 10 between the upper side 10 m and the release tape 16 or an oval-type through-hole for holding by hand. Good.

  Further, the resin sheet 12 may be folded between the upper side 10 m and the release tape 16. In this case, you may affix the adhesive tape 13 on the part folded inside.

  Next, the manufacturing process of the bag 10 will be described with reference to FIG. FIG. 3 is a schematic diagram schematically showing the manufacturing process.

  As shown in FIG. 3, first, a roll-shaped sheet material 22 and a roll-shaped adhesive tape 24 are prepared. For the sheet material 22, for example, a resin sheet (resin film) such as OPP (biaxially stretched polypropylene) or CPP (unstretched polypropylene) is used. In the adhesive tape 24, an adhesive paste for forming the adhesive layer 14 is continuously applied to one main surface 24 b of a resin tape 24 a such as PE (polyethylene) for forming the release tape 16.

  Next, after the sheet material 22 is unwound and the adhesive tape 24 is attached to the one main surface 22a of the sheet material 22, the sheet material 22 is folded into a substantially W-shaped cross section by a method such as using a triangular plate (not shown). . At this time, the one main surface 22a of the sheet material 22 to which the adhesive tape 24 is attached is set to the inside.

  Next, as shown by an arrow 28, an ultrasonic horn oscillating surface (not shown) is pressed against the ultrasonic cutting line 22 x on both sides of a virtual cutting line 22 x for cutting the sheet material 22 at a predetermined pitch. The joint portion 20 is formed.

  Next, as indicated by an arrow 29, the virtual cutting line 22x is melted and the bag 10 on which the heat seal portion 21 is formed is separated by melting.

  Through the above steps, the bag 10 in which the ultrasonic bonding portion 20 and the heat seal portion 21 are formed can be efficiently manufactured. The manufacturing process of the bag 10 only needs to add the process of sticking the adhesive tape 24 and the process of forming the ultrasonic bonding part 20 to the conventional manufacturing process of fusing while continuously feeding the sheet material 22.

  Next, modifications 1 to 6 will be described with reference to FIGS. 4 and 5. FIG. 4 is a plan view of the main part of the bag. FIG. 5 is a plan view of the main part of the sheet material after the ultrasonic bonding portion is formed and before fusing. In the following, the same reference numerals are used for the same components as in the first embodiment, and differences from the first embodiment will be mainly described.

  <Modification 1> The ultrasonic bonding portion may be formed so as to protrude only on one side of the adhesive tape. For example, as illustrated in FIG. 4A, the ultrasonic bonding portion 20 p traverses only one side 16 t of the release tape 16. Although the poor seal portion 31 is formed along the side 10t on the upper side 10m side of the ultrasonic bonding portion 20p, the bag can be sealed. Further, the release tape 16 is often peeled from the inside to the outside of the bag, and in that case, the release tape 16 can be easily broken along the boundary line 20t of the ultrasonic bonding portion 20p.

  <Modification 2> The ultrasonic bonding portion may be formed away from the heat seal portion. For example, as shown in FIG. 4B, an interval 34 is provided between the ultrasonic bonding portion 20 q and the heat seal portion 21. Although a poorly sealed portion 32 is formed at the end of the release tape 16, the bag can be sealed if the distance 34 between the ultrasonic bonding portion 20 q and the heat seal portion 21 is small.

  <Modification 3> The ultrasonic bonding portion may be formed so as to overlap the heat seal portion. For example, as shown in FIG. 5A, the ultrasonic bonding portion 20a is formed so as to cross the virtual cutting line 22x. When fusing along the virtual cutting line 22x, the ultrasonic bonding portion 20a is divided into two and overlaps with the heat seal portion formed along the virtual cutting line 22x.

  <Modification 4> The boundary line of the ultrasonic bonding portion may not be a straight line. The ultrasonic bonding portion may be formed in an annular shape. For example, as shown in FIG. 5B, in the ultrasonic bonding portion 20b, the boundary line 20m has a zigzag shape. A non-joining portion 20n is formed inside the ultrasonic joining portion 20p. The non-joining part 20n can be formed by using an ultrasonic horn provided with a hole in the contact surface (oscillation surface) pressed against the sheet material.

  <Modification 5> The ultrasonic bonding portion may be formed intermittently. For example, as shown in FIG. 5C, in the ultrasonic bonding portion 20c, a plurality of linear elements 20i crossing the virtual cutting line 22x are arranged with an interval 20v.

  <Modification 6> The boundary line of the ultrasonic bonding portion may have a curved shape. For example, as shown in FIG. 5 (d), in the ultrasonic bonding portion 20d, a plurality of circular elements 20j crossing the virtual cutting line 22x are arranged at intervals 20v. When fusing along the virtual cutting line 22x, an ultrasonic bonded portion having a semicircular boundary line is formed.

  <Example 2> A bag 30 with adhesive tape of Example 2 (hereinafter simply referred to as "bag 30") will be described with reference to FIG.

  FIG. 6 is a plan view of the bag 30. As shown in FIG. 6, the bag 30 is configured in substantially the same manner as the bag 10 of the first embodiment. Below, it demonstrates centering on difference with Example 1. FIG.

  As shown in FIG. 6, the bag 30 is formed in a bag shape using a folded resin sheet 32. A heat seal portion 34 wider than the heat seal portion 21 of the bag 10 of the first embodiment is formed along the pair of sides 30s and 30t, and the upper side 30m between the ends 30p and 30q of the pair of sides 30s and 30t is formed. An opening is formed along the bottom, and a bottom is formed along the lower side 30n between the other ends 30u and 30v of the pair of sides 30s and 30t.

  Note that the gusset portion may be formed along the lower side 30n or the heat seal portion may be formed along the lower side 30n.

  As the resin sheet 32, one that can form the heat seal portion 34 by heat sealing is used.

  For example, the resin sheet 32 is a laminated film in which a base film layer and a sealant layer are laminated. An intermediate layer may be provided between the base film layer and the sealant layer. The base film layer, sealant layer and intermediate layer may be a single layer or a plurality of laminated layers.

  The heat seal portion 34 is formed by heat welding (so-called solid seal) in which a relatively wide area is heated with the resin sheet 32 folded so that the sealant layers face each other, and the sealant layer is softened and bonded. The

  The bag 30 includes the release tape 16 and the adhesive layer 14 that are continuous between the pair of sides 30 s and 30 t, similarly to the bag 10 of the first embodiment.

  An ultrasonic bonding portion 38 is formed in the heat seal portion 34 so as to cross the release tape 16 and the adhesive tape 13 that forms the adhesive layer 14. The ultrasonic bonding portion 38 is a portion where both ends of the release tape 16 and the adhesive layer 14 and the resin sheet 12 are bonded to each other by ultrasonic bonding. When the heat seal portion 34 is formed, sealing cannot be performed unless the release tape 16 and the resin sheet 32 can be bonded together. However, by forming the ultrasonic bonding portion 38, the heat seal portion 34 can be reliably sealed.

  Note that the ultrasonic bonding portion 38 may cross only one side of the boundary line of the adhesive tape 13, may be formed only on the inner side of the adhesive tape 13, or may be divided into a plurality of elements.

  Since the ultrasonic bonding portions 38 are formed at both ends of the release tape 16, as in the first embodiment, when the release tape 16 is peeled off from the adhesive layer 14, the ultrasonic bonding portions 38 are formed. Break along the borders.

  The bag 30 can be manufactured by adding an ultrasonic bonding step for forming the ultrasonic bonding portion 38 to a general bag manufacturing process having a heat seal portion. For example, before the heat sealing process of forming a heat sealing part on the sheet material by heat sealing, a process of attaching an adhesive tape to the sheet material is added, and the heat sealing process and the center of the heat sealing part of the sheet material are cut. The bag 30 can be manufactured continuously and efficiently simply by adding a step of forming the ultrasonic bonding portion between the cutting step and dividing into the bags.

  FIG. 7 is a main part plan view showing Modifications 7 to 9 of the ultrasonic bonding part formed in the heat seal part 34.

  <Modification 7> As shown to Fig.7 (a), you may form the ultrasonic junction part 38a so that the outer boundary line 34s (in the figure, side 30s) of the heat seal part 34 may be contact | connected.

  <Modification 8> As illustrated in FIG. 7B, the ultrasonic bonding portion 38 b may be formed so as to be in contact with the inner boundary line 34 t of the heat seal portion 34.

  <Modification 9> As illustrated in FIG. 7C, the ultrasonic bonding portion 38 c may be formed so as to protrude from the heat seal portion 34 and straddle the boundary line 34 t inside the heat seal portion 34.

  <Modification 10> As shown in FIGS. 8A and 8B, the ultrasonic bonding portion 120 may be formed on the bags 110a and 110b in which the opening 110x is formed at the intermediate position.

  FIGS. 8A and 8B are partial cross-sectional perspective views schematically showing the configuration of the bags 110a and 110b. As shown in FIGS. 8A and 8B, the positions of the upper sides 112s and 112t of the first and second portions 112a and 112b of the resin sheet 112 bent at the lower side 113 are different. The first portion 112a and the second portion 112b form a heat seal portion along a pair of sides 111 (only one is shown). However, a heat seal portion is not formed in a portion between the upper side 112s of the first portion 112a and the upper side 112t of the second portion 112b.

  The adhesive tape, that is, the adhesive layer 114 and the release tape 116 may be formed on the inner surface 112q of the first portion 112a or may be formed on the inner surface 112q of the second portion 112b.

  <Modification 11> Like the bag 210a shown to Fig.9 (a), you may comprise the resin sheet 212 so that it may have the bending parts 212c and 212d along opening.

  FIG. 9A is a partial cross-sectional perspective view schematically showing the configuration of the bag 210a. As shown in FIG. 9A, the resin sheet 212 is formed in a bent state along a pair of sides 211 (only one of which is shown). The resin sheet 212 includes bent portions 212c and 212d that are bent along the upper side 212s of the first portion 212a. A linear heat seal portion 212x is formed along an intermediate position between the bent portions 212c and 212d, that is, along a boundary line between the third portion 212c and the fourth portion 212d. The third portion 212c on the upper side 212s side may be heat-sealed in the form of dots or a net.

  The adhesive layer 214 and the release tape 216 are formed on the second portion 212b of the resin sheet 212 so as to face the fourth portion 212d far from the upper side 212s. The adhesive layer 214 and the release tape 216 may be formed on the fourth portion 212d so as to face the second portion 212b of the resin sheet 212.

  Since the first portion 212a and the second portion 212b of the resin sheet 212 are bonded to each other through the fourth portion 212d, the opening side of the bag 210a is easily spread when sealed. Therefore, it is suitable for storing a three-dimensional object.

  But you may form the adhesion layer 214 and the release tape 216 in the part facing the 3rd part 212c or the 3rd part 212c.

  The positions of the upper sides 212s and 212t may be aligned or shifted. A gusset portion may be formed along the lower side 213.

  <Modification 12> A bag 210b shown in FIG. 9B is configured in substantially the same manner as the bag 210a of Modification 11. Unlike the modification 11, the bent portions 212c, 212d, and 212e of the resin sheet 212 include a fifth portion 212e that is bent from the fourth portion 212d toward the upper side 212s. The adhesive layer 214 and the release tape 216 are formed so as to face the fifth portion 212e. The adhesive layer 214 and the release tape 216 may be formed on the fifth portion 212e so as to face the fifth portion 212e.

  In the bag 210b, the first portion 212a and the second portion 212b of the resin sheet 212 are bonded via the fourth and fifth portions 212d and 212e, and therefore, between the first portion 212a and the second portion 212b, It becomes easier to spread and can accommodate larger three-dimensional objects.

  Note that a configuration without the gusset portion 212p formed along the lower side 213 may be used. The positions of the upper sides 212s, 212t, and 212u may be aligned or shifted.

  In addition, a bent portion that is bent inward, such as the bent portion of the modified example 11 or the modified example 12, may be formed on the second portion 212b side of the resin sheet 212. In this case, the adhesive layer 214 and the release tape 216 are formed on one of the opposing portions of the bent portion of the resin sheet 212 on the first portion 212a side and the bent portion of the resin sheet 212 on the second portion 212b side. That's fine.

  <Modification 13> A perforation is formed so as to cross between a pair of sides where the heat seal portion is formed, or a notch (cut) is formed on at least one of the pair of sides where the heat seal portion is formed. For example, when taking out the stored article, the bag may be broken along the perforation or the bag may be broken starting from the notch. In this case, since the adhesive layer is not exposed even when opened, the stored article can be easily taken out.

  <Summary> As described above, the bag with adhesive tape of the present invention can be sealed and manufactured efficiently.

  The mouth-matching bag with adhesive tape of the present invention is easier to use than the bag with chuck.

  That is, in the bag with a chuck, it is necessary to open the chuck when putting an object, and when closing the bag, the position of the chuck needs to be adjusted and fitted with force.

  In contrast, in the bag with adhesive tape of the present invention, after tearing off the release tape, the resin sheet is simply stacked on the adhesive layer by, for example, pinching the vicinity of both ends of the opening and pulling them away from each other. Can be sealed with. In addition, if the release tape is torn off after storing the article, the article does not touch the adhesive tape, so that the article can be stored easily. Therefore, the operation of storing and sealing the article can be easily performed.

  Moreover, if the adhesive force of the adhesive layer is adjusted, the resin sheet can be prevented from being broken even if the mouth of the bag is widened and the adhesive layer is peeled off. In that case, since the bag with adhesive tape of the present invention of the present invention is reinforced by the ultrasonic bonding portion, it can be used without being broken even if it is repeatedly opened and closed.

  The bag with a self-adhesive tape of the present invention can be manufactured simply by adding an ultrasonic bonding process to a general bag manufacturing process, and a special member such as a chuck tape of a bag with a chuck is attached. Since it is not necessary, it can be manufactured at low cost.

  The present invention is not limited to the above embodiment, and can be implemented with various modifications.

  For example, the adhesive tape can be arranged at an arbitrary position, and is not limited to the opening side of the bag, and may be arranged at the center or the bottom side of the bag.

  Further, the present invention is not limited to a release tape that is entirely formed of a resin, and the present invention may be implemented by using a release tape or the like in which a substrate such as paper is coated with a resin.

10, 10x bag 10a, 10b outer surface 10m upper side 10n lower side 10p, 10q one end 10s, 10t side 10u, 10v other end 10z opening 12 resin sheet 12a first part 12b second part 12c gusset part 12m, 12n inner surface 13 adhesive tape 14 adhesive Layer 14m, 14n Main surface 16 Release tape 16s, 16t Side 20, 20, 20a to 20d, 20p, 20q Ultrasonic joint 20i Linear element 20j Circular element 20m, 20s, 20t Boundary line 20n Non-joint part 20s, 20t Boundary Line 20u, 20v Interval 20x, 20y Extension part 21 Heat seal part 22 Sheet material 22a One main surface 22x Virtual cutting line 24 Adhesive tape 24a Resin tape 24b One main surface 30 Bag 30m Upper side 30n Lower side 30p, 30q One end 30s, 30t Side 30u , 30v End 30x overlap portion (poor sealing portion)
31, 32 Seal failure portion 32 Resin sheet 34 Interval 34 Heat seal portion 34s, Boundary line 38, 38a to 38c Ultrasonic bonding portion 110a, 110b Bag 110x Opening 111 Side 112 Resin sheet 112a First portion 112b Second portion 112q Inner surface 112s 112t Upper side 112t Upper side 113 Lower side 114 Adhesive layer 116 Release tape 120 Ultrasonic bonding part 210a, 210b Bag 211 Side 212 Resin sheet 212a First part 212b Second part 212c Third part 212d Fourth part 212e Fifth part 212s, 212t, 212u Upper side 212x Heat seal part 213 Lower side 214 Adhesive layer 216 Release tape 220 Ultrasonic bonding part

Mouth combined geometry adhesive tape with bag of, (a) comprises a folded or overlapped resin sheets, along a pair of sides, the heat seal portion is opposite portions to each other was Ri stuck of the resin sheet is formed A bag-shaped main body having an opening formed on one end side of the pair of sides and a bottom formed on the other end side of the pair of sides; and (b) the opening of the resin sheet facing each other. One main surface is bonded to one of the inner surfaces to be adhered, and the pressure-sensitive adhesive layer is continuous between the pair of sides; and (c) the pressure-sensitive adhesive layer is peelably bonded to the other main surface of the pressure-sensitive adhesive layer. the cover, and a release tape is continuous between said pair of sides, bonded (d) both ends of KiHanare type tape and the adhesive layer before Te outer surface between the smell of the body and said resin sheet together And a pair of ultrasonic bonding portions. The ultrasonic bonding portion overlaps or is adjacent to the heat seal portion.

Claims (4)

A heat-sealed portion is formed that includes a resin sheet that is folded or overlaid and that is heated and bonded to each other along the pair of sides, and is open at one end of the pair of sides A bag-shaped main body having a bottom formed on the other end side of the pair of sides;
One of the inner surfaces of the resin sheet facing each other and forming the opening, one main surface is bonded, and an adhesive layer that is continuous between the pair of sides,
A release tape that is releasably adhered to the other main surface of the adhesive layer and covers the adhesive layer, and is continuous between the pair of sides;
Between the outer surfaces of the main body, a pair of ultrasonic bonding portions in which both ends of the release tape and the adhesive layer and the resin sheet are bonded to each other by ultrasonic bonding,
With
The ultrasonic bonding portion overlaps or is adjacent to the heat sealing portion, and is a bag with an adhesive tape having a matching shape. The ultrasonic bonding part is
A boundary line across the side of the release tape away from the heat seal portion;
Along the boundary line, only the resin sheet is ultrasonically bonded, and an extension that contacts the side of the release tape;
The bag with adhesive tape according to claim 1, characterized in that   The bag with adhesive tape according to claim 1 or 2, wherein the main body has a gusset portion where the resin sheet is folded inward on the other end side of the pair of sides. .   The bag with adhesive tape according to any one of claims 1 to 3, wherein the resin sheet has a bent portion along the opening.

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