JP4919589B2 - Bag opening and closing tape, and bag - Google Patents

Description

  The present invention relates to a bag opening tape for opening a bag in a predetermined opening shape, a bag opening and closing tape for holding and sealing the bag with the opening folded, and opening the bag. The present invention relates to a bag to which at least one of a tape for use and a tape for opening / closing a bag is attached.

  As a bag, for example, in a closed bag (sometimes referred to as a “closed bag”) such as a sealed bag (sometimes referred to as a “closed bag”), the contents are usually contained inside. After storage, the inner surfaces of the bags are sealed by being adhered by various bonding methods (such as a bonding method using heat fusion or a bonding method using an adhesive) and closed (sealed). When taking out the contents from such a closed bag, it is of course necessary to open it. At this time, even if it is intended to open the vicinity of the end portion (sealed end portion) where the inner surfaces of the closed bag are bonded and sealed together by cutting in the width direction by a straight line or an arbitrary curved line by hand. So that the contents of the bag may spill unintentionally or the appearance of the cut surface or opening (opening shape) may be impaired, resulting in the desired opening shape. In order to open the package, some device is necessary.

  Conventionally, for example, (1a) a method of attaching a cutting thread or a thin metal wire to the inner surface side of a part to be opened of a bag (1b) ) A method of attaching a film having the property of tearing in one direction to the inner surface side of the part to be opened of the bag, (1c) An opening tape provided with a linear notch in the center of a pre-made adhesive tape A method of sticking to a part of a bag to be opened and cutting using the cut portion (see Patent Document 1), (1d) bonding two to four adhesive tapes in a predetermined positional relationship, A method of cutting using a gap between tapes (see Patent Document 2) has been proposed.

  In the methods (1a) and (1b), in order to attach a thread or film to the inner surface of the bag, special manufacturing equipment or technology is required, and it must be attached before making a closed bag. First, since it becomes difficult to attach after making a closed bag, there are restrictions on the manufacturing process, and if a metal wire or the like is attached to the inner surface of the closed bag, the bag may break during storage or storage. In addition, there is a possibility that the sealing performance may be impaired, and when a film having a property of tearing in one direction is used, there are problems such as an increase in cost and a limitation of materials.

  In addition, the above methods (1c) and (1d) require a secondary processing step such as cutting the adhesive tape, resulting in high costs, and two adhesive tapes on one side or maximum on both sides. It was necessary to bond four pieces, and there were problems that the bonding apparatus became complicated and that the bonding process was difficult, such as replacement of the adhesive tape.

  On the other hand, in the case of taking out all the contents stored in the bag in a bag having an opening such as a bag in which the closed bag is opened (sometimes referred to as “open bag”), there is no problem. There is a case where at least a part of the contents is stored or preserved in the bag without taking out all the contents. As described above, when storing at least a part of the contents in the open bag after opening the closed bag or storing other articles in the open bag, the opened bag (“opened” In some cases, it is required to seal the opening in the open bag in a form that can be opened and closed. It is preferable that it can be sealed in a form capable of.

  Conventionally, as a method of sealing an opening in an opening bag such as an opening bag in a form that can be opened and closed, for example, (2a) a form that can be opened and closed using a plastic uneven zipper (male and female zipper) And (2b) a method of attaching an adhesive tape and sealing in a form that can be opened and closed.

  The above method (2a) requires an uneven zipper made of plastic, which increases the manufacturing cost, and is difficult to handle when a handicapped person (such as an elderly person) opens and closes. There were problems such as.

  Further, in the method (2b), first, there is a problem of what to do with the storage location after protecting the adhesive surface of the adhesive tape to be applied. For example, it is conceivable that the adhesive tape is cut out from the adhesive tape cutter in the room separately from the opening bag and used, but the adhesive tape cutter or the like is not always present at the place where the adhesive tape is to be stopped. In addition, it may be possible to stick the adhesive tape directly on the closed bag in advance and then peel it off after opening the closed bag. In this case, the adhesive surface is clean from the open bag that opened the closed bag. There is a considerable limitation on the material of the bag and the adhesiveness of the adhesive tape. In addition, there is a problem that, when the bag is opened after being sealed with an adhesive tape, the adhesive is so strong that it breaks the bag material of the opening bag, or the adhesion is weak and peels off in the middle.

Registered Utility Model Publication No. 3031362 JP 2000-168996 A

  Therefore, an object of the present invention is to allow the bag to be opened in a predetermined opening shape, and to attach the bag to the bag, no special device or technique is required, and the bag manufacturing process has special restrictions. In addition, there is no risk of bag breakage during storage, and further, the properties of the material are not limited, and secondary processing is not required, and the bonding workability is excellent. Another object of the present invention is to provide a bag having a tape attached thereto and an opening tape for the bag.

  Another object of the present invention is to provide a bag opening / closing tape capable of sealing the bag in an openable / closable form and capable of easily opening / closing the bag, and the bag opening / closing tape. It is to provide an affixed bag.

  Still another object of the present invention is to allow the bag to be opened in a predetermined opening shape, and after opening, the opened bag can be sealed in a form that can be opened and closed. An object of the present invention is to provide a bag that can be easily opened and closed after opening.

  As a result of intensive studies to achieve the above object, the inventors of the present invention can easily open a bag with a predetermined opening shape by hand by using a specific opening tape and opening / closing tape. It has been found that after opening, the opening bag can be easily sealed in a form that can be opened and closed. The present invention has been completed based on these findings.

That is, the present invention is a bag opening / closing tape capable of being sealed by being attached to the outer surface of a bag and holding the bag in a state where the opening is folded, and is attached to the outer surface of the bag. It has a configuration in which a bag sticking site for wearing and a bag sealing site for holding the opening in a folded state are stacked, and the following configurations (a) to (e) It is the tape for opening and closing a bag characterized by having.
(A) The structure which the tape base material which comprises a bag sticking site | part, and the tape base material which comprises a bag sealing site | part are joined by one edge part side (b) The bag sticking site | part is a tape base The structure which has an adhesive layer for making it stick on the outer surface of a bag on one surface of a material, and has a mold release processing agent layer on the other surface (c) The bag sealing part is one side of a tape base material (D) A mold release treatment agent at the bag attachment site having a pressure-sensitive adhesive layer for holding the opening in a partially folded state and a mold release treatment agent layer on the other surface. A structure in which the bag-attached part and the bag-sealed part are laminated in a form in which the surface on the layer side and the surface on the adhesive-layer side of the bag-sealed part are in contact with each other. The structure which is not formed in the site | part of the junction part side joined to the bag sticking site | part

  In the bag opening and closing tape, a pressure-sensitive adhesive layer is formed at least in a region within 1 mm from the bonding portion bonded to the bag attachment site on the surface of the bag sealing portion on the bag attachment site side. Preferably not. Moreover, the tape base material which comprises a bag sticking site | part, and the tape base material which comprises a bag sealing site | part are formed by bending the tape base material currently formed in one sheet. It is preferable to have. Furthermore, it is preferable that the bag sealing part has a knob at a part on the end side that is not joined to the bag sticking part.

  Furthermore, the present invention is a bag that can be held and sealed in a state where the opening is folded, and the bag is characterized in that an opening / closing tape for the bag is attached to the outer surface. I will provide a.

When the opening of the bag is folded, the opening / closing tape for the bag positions the end or the end side portion when the opening is folded between the bag attaching part and the bag sealing part. In order to be able to do so, it is suitable that it is stuck on the outer surface of the bag so that the open end side of the bag sealing portion is located on the opening side of the bag. The opening / closing tape of the bag may be attached at least partially in the width direction at any end of the bag, and the bag sealing part and the bag attaching part in the opening / closing tape of the bag Even if the length in the direction parallel to the joined portion is 3 to 100% of the length of the end portion of the bag on the side where the opening / closing tape of the bag is adhered Good.

  The bag may be a bag in any form of a four-sided bag, a three-sided bag, a pillow bag, a standing pouch, or a gusset bag. The bag is a rectangular four-sided bag, and the opening and closing tape of the bag is sealed on the long side of the two sides at the four-side sealing end where the inner surfaces of the rectangular four-sided bag are bonded together It is preferable that it is stuck to the sealing end part side of one long side among edge parts.

In the present invention, when opening the bag, it is possible to open the bag with a predetermined opening shape, and after opening, the opening portion of the opened bag is held in a folded state and sealed. A bag opening tape that can be opened in a predetermined opening shape by attaching the bag to the outer surface of the bag, the tape base material and For opening a bag, which has at least an adhesive layer, and in which a tape base material having a concave portion formed in a linear or curved shape in advance in the longitudinal direction of the opening tape is used as the tape base material Provided is a bag in which a tape is attached and an opening / closing tape for the bag is attached to another part of the outer surface.
In unsealing tape of the bag, the thickness in the recess of the tape base material, recesses and 95% or less with respect to the thickness of the portion not formed, is preferably and 5μm or more, the tape base material The width of the recess is preferably 5 mm or less. Furthermore, it is preferable that the concave portion is formed in advance only on one surface side of the tape base material, and the pressure-sensitive adhesive layer is formed on the flat surface side of the tape base material.
Moreover, as a bag opening tape, it is preferable that the mold release process layer is formed in the surface on the opposite side with respect to the adhesive layer in a tape base material.

As a bag in which such a bag opening tape and a bag opening / closing tape are adhered, the bag opening tape is provided at least on the surface side where the bag opening / closing tape is not provided. After opening the bag, the opening of the opened bag is folded to the side where the opening / closing tape of the bag is provided, and the bag sealing portion of the opening / closing tape remains in the opening of the bag. It is preferable that the opened bag can be sealed in a form that can be opened and closed by sticking it to the release surface of the release layer of the tape. In particular, the opening tape of the bag is linearly parallel to the longitudinal direction of the tape base material at a position shifted to any end side in the width direction from the central part of the width direction of the tape base material, The side which is formed and has a configuration in which a release treatment layer is formed on the surface opposite to the pressure-sensitive adhesive layer in the tape base material, and the recess in the opening tape of the bag is shifted and formed It is preferable that the opening portion of the bag is stuck to the outer surface of the bag in a form in which the end portion is located on the end portion side of the bag.
In the present specification, in addition to the above-mentioned invention, a bag opening tape capable of opening a bag in a predetermined opening shape by being attached to the outer surface of the bag, the tape substrate and A tape for opening a bag, wherein a tape base material having at least a pressure-sensitive adhesive layer and having a recess formed in advance is used as the tape base material, and a predetermined opening shape A bag that can be opened in the above-described manner and having the tape for opening the bag attached to the outer surface is also described.

  According to the opening tape of the bag of the present invention, the bag can be opened in a predetermined opening shape, and no special device or technique is required when affixing to the bag, and the bag manufacturing process In addition, there is no risk of bag breakage during storage, the properties of the material are not limited, secondary processing is not required, and the laminating workability is excellent. Yes.

  Further, according to the bag opening and closing tape of the present invention, the bag can be sealed in a form that can be opened and closed, and the opening and closing operation of the bag can be easily performed.

  Therefore, according to the bag of the present invention, the bag can be opened in a predetermined opening shape, and after opening, the opened bag can be sealed in a form that can be opened and closed, and the bag can be opened. And it is possible to easily open and close after opening.

  Embodiments of the present invention will be described below in detail with reference to the drawings as necessary. In addition, the same code | symbol may be attached | subjected to the same member, a site | part, etc.

[Tape opening bag]
FIG. 1 is a schematic cross-sectional view showing an example of the opening tape of the bag of the present invention. In FIG. 1, 1 is a tape for opening a bag (sometimes simply referred to as "opening tape"), 1a is a tape base material, 1a1 is a recess formed in the tape base material 1a in advance, 1b is an adhesive layer, 1c is a mold release processing agent layer. The cross-sectional view of the opening tape shown in FIG. 1 is a cross-sectional view when cut in a direction perpendicular to the longitudinal direction of the opening tape, and the left-right direction of the drawing is the width direction.

  An opening tape 1 shown in FIG. 1 includes a tape base 1a having a pre-formed recess 1a1, a pressure-sensitive adhesive layer 1b formed on the surface of the tape base 1a, and a recess of the tape base 1a. It is comprised by the mold release processing agent layer 1c formed in the surface side which has. Thus, in the opening tape of the present invention, since the tape base material in which the concave portion is formed in advance at the predetermined position is used, the bag is formed along the concave portion using the concave portion formed in the tape base material. Can be cut (especially by hand). Therefore, when the opening tape of the present invention is used, the bag can be easily cut by hand to open the bag in a predetermined opening shape.

  In addition, the opening tape uses a tape base material in which a concave portion is previously formed at a predetermined position, and after forming an adhesive layer on the tape base material to produce an adhesive tape, the concave portion is formed. However, it does not require a secondary processing step for forming a recess in the pressure-sensitive adhesive tape, and can be manufactured in the same manufacturing process as a normal pressure-sensitive adhesive tape. From this viewpoint, the cost is not increased.

  In addition, since the recess is formed in the tape base material of the opening tape, a single opening tape is attached to the outer surface of the bag so that the recess is located at the site (scheduled opening site) of the bag. It is only necessary to match, and there is no need to bond two adhesive tapes on the same side surface in a predetermined positional relationship. Moreover, the bag has a sealed end where the inner surfaces are bonded to each other, and the opening tape is placed on both sides of the bag on the side of the sealed end (for example, inside the sealed end of the bag). Even when pasting to the outer surface part), the positional relationship of the opening tape that is bonded to the front and back is not an accurate or almost accurate front and back symmetrical positional relationship, even if slightly shifted, The structure is such that it can be opened by absorbing this slight shift. Therefore, when the opening tape is bonded to the bag, a complicated bonding apparatus is not required, and the bonding can be performed with a simple bonding apparatus. Furthermore, since only one opening tape is used, the opening tape can be easily replaced when the opening tape is replaced during the bonding operation. Therefore, the bonding process is easy, and the opening tape can be bonded to the bag with excellent bonding workability.

  Furthermore, in the present invention, the opening tape is bonded to the outer surface of the bag, and the cutting inner thread, the thin metal wire, or the film having the property of tearing in one direction is not attached. When attaching the opening tape as the opening member to the bag, no special device or technique is required. Moreover, when used as an opening tape for a closed bag such as an airtight bag, the opening tape can be attached to the bag or bag member at any time before, during or after sealing the bag, There are no special restrictions on the bag manufacturing process. When applied to a closed bag such as a sealed bag, the opening tape is usually applied after the bag is sealed, and can be easily applied to the site of the bag to be opened. ing.

  Furthermore, since there is no possibility of breaking the bag, such as a metal wire, there is no risk of breaking the bag during storage or storage, for example, by attaching the opening tape. There is no possibility that the closing property (in particular, the sealing property) of the closed bag will be impaired. Therefore, no special conditions are created when storing and preserving the bag with the opening tape attached.

  Moreover, as the tape base material, only the tape base material in which the recesses are formed in advance is used, so the material of each member in the opening tape is specially limited to the material properties such as the property of tearing in one direction. Does not cause.

(Tape substrate)
As the tape base material, as described above, a tape base material in which concave portions are formed in advance is used. In addition, since the recessed part formed in the tape base material is utilized as a cutting part when opening a bag (such as a closed bag), it may be formed in a predetermined shape at a predetermined position on the tape base material. is important. In addition, the tape base material usually has a long shape (particularly a long belt shape), and the concave portion as a whole is formed in the longitudinal direction of the long tape base material. is important. That is, it is important that the recess is formed on the tape base material in a form that is formed toward the longitudinal direction of the opening tape when the opening tape is used. In addition, the recessed part formed toward the longitudinal direction of the tape for opening (or tape base material) may be formed parallel to the longitudinal direction, and may be formed non-parallel to the longitudinal direction. Moreover, the recessed part formed in parallel with the longitudinal direction of the tape for opening (or tape base material) should just be formed in parallel with the longitudinal direction as the whole recessed part, and it is partially or locally in the longitudinal direction. There may be non-parallel sites.

  The recess may be formed on both surfaces of the tape base material, but is preferably formed on any one surface. In addition, on one surface side of the tape base material, a plurality of elongated recesses formed in the longitudinal direction may be formed in parallel or non-parallel, but only one is formed. Preferably it is.

  In the opening tape of the present invention, the long concave portion formed in the longitudinal direction may be a long concave portion as a whole, for example, a linear shape as shown below. In addition, a long concave portion may be formed as a whole by forming one concave portion or a curved concave portion, and a plurality of concave portions are continuously formed in a straight line or a curved shape as a whole. By doing so (for example, by forming a dotted line-shaped concave part), a long concave part may be formed as a whole.

  Such recesses are linear in the longitudinal direction [for example, a “one” shape parallel to the longitudinal direction as shown in FIG. 2 (a), and “V” as shown in FIG. 2 (b). Character shape or a combination thereof], a curved shape in the longitudinal direction [for example, a “U” shape as shown in FIG. 2C, a wavy shape as shown in FIG. Or a combination of these], or a combination of these linear and curved shapes. Therefore, it is preferable that the recessed part in the opening tape has a configuration formed in a linear shape or a curved shape in the longitudinal direction of the opening tape. In addition, when the curved recessed part is formed in the longitudinal direction, the curved recessed part can be formed in parallel with the longitudinal direction as a whole.

  FIG. 2 is a schematic perspective view partially showing an example of a recess formed in advance on the tape base material in the present invention. In FIG. 2, (a) shows a concave portion formed in a linear shape of “one” shape, and (b) shows a concave portion formed in a linear shape of “V” shape, (C) shows the concave part formed in the curved shape of the “U” shape, and (d) shows the concave part formed in the curved line shape. In addition, in FIG. 2, 2a-2d is a tape base material, respectively, 2a1-2d1 is a recessed part in tape base materials 2a-2d, respectively.

  In the opening tape of the present invention, when the concave portion formed in the tape base material is formed linearly in parallel with the longitudinal direction of the tape base material, the concave portion is the central portion in the width direction of the tape base material. It may be formed at a position shifted from the central portion in the width direction of the tape base material to any one end side in the width direction. When the concave portion formed linearly in parallel with the longitudinal direction of the tape substrate is formed at a position shifted to any end side in the width direction from the central portion in the width direction of the tape substrate, When the bag is cut along the recess of the opening tape attached to the bag, the width of the opening tape remaining in the opened bag (opening bag) as the bag body is adjusted. be able to. For example, when it is preferable that the remaining width of the remaining opening tape is preferable for a bag having an opening such as an opening bag (opening bag), the end on the side where the concave portion of the opening tape is shifted is formed. Opening tape can be attached to the outer surface of the bag with the part positioned on the end side of the bag (bag before opening), while remaining in the opening bag such as the opening bag. When it is preferable that the width of the tape residue is smaller, the end portion on the side where the concave portion of the opening tape is shifted is not positioned on the end side of the bag (bag before opening) ( That is, the opening tape is attached to the outer surface of the bag in such a manner that the end of the opening tape that is not formed by shifting the recess is located on the end side of the bag (bag before opening). be able to.

  In addition, in this invention, since the recessed part formed in the tape base material is utilized as a cutting part at the time of opening a bag, the shape of the longitudinal direction of a recessed part is made into the shape of a cutting part (namely, opening part shape). can do. Therefore, the shape of the recess formed in advance on the tape base material can be appropriately set according to the shape of the opening of the bag. On the contrary, the shape of the opening of the bag can be changed to various shapes by appropriately adjusting the shape of the recess in the longitudinal direction.

  Moreover, in the recessed part previously formed in the tape base material, it does not restrict | limit especially as a cross-sectional shape at the time of cut | disconnecting in a direction (width direction) perpendicular | vertical with respect to a longitudinal direction, As shown in Fig.3 (a) Any cross section such as “U” shape, “V” shape as shown in FIG. 3B, “U” shape as shown in FIG. It may be a shape. The cross-sectional shape of the recess is preferably a “U” shape or “V” shape, and more preferably a “U” shape.

  FIG. 3 is a schematic cross-sectional view showing an example of a recess formed in advance on the tape base material in the present invention. The cross-sectional view of the tape base material shown in FIG. 3 is a cross-sectional view when cut in a direction (width direction) perpendicular to the longitudinal direction of the tape base material. The direction of is the width direction. In FIG. 3, (a) shows a recess formed in a “U” shape, (b) shows a recess formed in a “V” shape, and (c) shows “U”. ”Shows a recess formed in a letter shape. In addition, in FIG. 3, 3a-3c is respectively a tape base material, 3a1-3c1 is a recessed part in tape base materials 3a-3c, respectively.

  In the recess formed in advance in the tape base material, the width of the recess is not particularly limited and may exceed 5 mm, but is preferably 5 mm or less (for example, 0.1 to 5 mm), particularly 3 mm. The following (for example, 1 to 3 mm) is preferable. If the width of the recess is too wide, the shape of the opening when the bag is opened tends to be jagged, and the aesthetics of the shape of the opening is reduced.

  Moreover, in the recessed part previously formed in the tape base material, it does not restrict | limit especially as thickness of a recessed part, It becomes thinner than the thickness of the part in which the recessed part is not formed (it may be called a "recessed part non-formation part"). However, it is preferably 95% or less with respect to the thickness of the non-recessed portion, and particularly preferably 80% or less (particularly 70% or less) with respect to the thickness of the non-recessed portion. is there. If the thickness of the recess exceeds 95% with respect to the thickness of the non-recessed portion, it may be difficult to cut along the recess, although it depends on the material of the tape substrate.

  In the thickness of the recess, the lower limit of the ratio of the thickness of the non-recessed portion is not particularly limited. However, if the thickness of the recess is too thin, the recess is likely to be cut when the tape base material is manufactured. The production stability and workability of the material are reduced. Therefore, the thickness of the recess may be less than 5 μm depending on the material of the tape base material, but is preferably 5 μm or more, and particularly preferably 10 μm or more (in particular, 20 μm or more). is there.

  As such a tape base material, for example, a plastic base material can be used. The material or material constituting the plastic substrate is not particularly limited, and examples thereof include polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), and the like. Polyolefin resins; Polyimide (PI); Polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT); Polyamide resins such as polyamide (nylon) and wholly aromatic polyamide (aramid) Resin; Methacrylate resin such as polymethyl methacrylate (PMMA); Acrylic resin; Styrene resin such as polystyrene, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin) Polyvinyl chloride (PVC); polyvinyl alcohol; polyphenylene sulfide (PPS); polyether ether ketone (PEEK); polycarbonates; urethane resins:; include various resins such as fluorine resin epoxy resin. These materials can be used alone or in combination of two or more.

  As the plastic substrate, a plastic substrate formed of a polyolefin resin (in particular, polyethylene or polypropylene, particularly polypropylene) is preferable from the viewpoints of flexibility, cost, and the like.

  In addition, the tape base material may have any form of a single layer or a lamination.

  The surface of the tape base material is subjected to appropriate surface treatments such as physical treatment such as corona treatment and plasma treatment, and chemical treatment such as primer for the purpose of improving adhesion to the adhesive layer, etc. It may be.

  Although it does not restrict | limit especially as thickness of a tape base material, Usually, it is 5-1000 micrometers (preferably 10-500 micrometers).

(Adhesive layer)
In the opening tape of the present invention, the pressure-sensitive adhesive layer is formed of a pressure-sensitive adhesive. The pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is not particularly limited. For example, any type of pressure-sensitive adhesive such as an emulsion-type pressure-sensitive adhesive, a solvent-type pressure-sensitive adhesive, a hot-melt-type pressure-sensitive adhesive, an oligomer-type pressure-sensitive adhesive, or a solid-type pressure-sensitive adhesive. An agent may be used. An adhesive can be used individually or in combination of 2 or more types.

  When the adhesive is an emulsion adhesive or a solvent adhesive, for example, an acrylic adhesive, a rubber adhesive, a polyester adhesive, a urethane adhesive, a polyamide adhesive, an epoxy adhesive, Adhesives such as vinyl alkyl ether pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and fluorine-based pressure-sensitive adhesives, and pressure-sensitive adhesives in respective forms (for example, emulsion form, solution form, etc.).

  In addition, as the pressure-sensitive adhesive, when it is a hot-melt pressure-sensitive adhesive, a thermoplastic elastomer such as a styrene-based thermoplastic elastomer (styrene-based block copolymer), a polyurethane-based thermoplastic elastomer, a polyester-based thermoplastic elastomer, a polyolefin-based resin, Examples thereof include a hot-melt adhesive having a base polymer of a thermoplastic resin such as a vinyl acetate resin, a polyester resin, a styrene resin, an acrylic resin, or a polyamide resin. Examples of the styrenic thermoplastic elastomer include styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene block copolymer. (SEBS), styrene-ethylene-propylene-styrene block copolymer (SEPS), styrene-ethylene-propylene block copolymer (SEP), and the like. Examples of polyolefin resins include ethylene-unsaturated carboxylic acids such as ethylene-vinyl acetate copolymer (EVA); ethylene-acrylic acid copolymer (EAA), and ethylene-methacrylic acid copolymer (EMAA). Copolymer; ionomer; ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer (EEA), ethylene-ethyl acrylate 2-ethylhexyl copolymer, ethylene-methyl methacrylate copolymer, ethylene-methacryl Ethylene- (meth) acrylic acid ester copolymers such as ethyl acid copolymers; ethylene-vinyl alcohol copolymers, etc., polyethylene (low density polyethylene, linear low density polyethylene, metallocene catalyzed polyethylene, medium density polyethylene) , High-density polyethylene, etc.), polypropylene Like polypropylene modified resins; emission, alpha-olefin copolymer (ethylene - propylene copolymer, ethylene - - butene-1 copolymer, propylene butene-1 copolymer) polyolefins such. Examples of the vinyl acetate resin include polyvinyl acetate, vinyl acetate- (meth) acrylic acid ester copolymer, vinyl acetate-vinyl ester copolymer, vinyl acetate-maleic acid ester copolymer, and the like.

  In addition to the polymer component such as the adhesive component (base polymer), the pressure-sensitive adhesive includes a crosslinking agent (for example, an isocyanate-based crosslinking agent, an epoxy-based crosslinking agent, a melamine-based crosslinking agent) depending on the type of the pressure-sensitive adhesive. , Oxazoline cross-linking agents, etc.), tackifiers (eg rosin resins, terpene resins, petroleum resins, phenolic resins, epoxy resins, amide resins, etc.), plasticizers, fillers, anti-aging agents, UV rays Appropriate additives such as an absorbent, an antioxidant, a thickener, a colorant, an antistatic agent, a foaming agent, and a surfactant may be contained.

  As a method for forming the pressure-sensitive adhesive layer, a known or conventional method for forming a pressure-sensitive adhesive layer can be employed. For example, a pressure-sensitive adhesive layer having a predetermined thickness is formed on a predetermined portion of a predetermined surface of the tape substrate. Apply directly to form a layer, and dry and cure as necessary (coating method). Apply a pressure-sensitive adhesive to form a pressure-sensitive adhesive layer on the separator. Examples thereof include a method (transfer method) of forming the pressure-sensitive adhesive layer and then transferring the pressure-sensitive adhesive layer onto a tape substrate.

  Although it does not specifically limit as thickness of an adhesive layer, For example, it can select from the range of about 10-1000 micrometers (preferably 20-500 micrometers).

  The pressure-sensitive adhesive layer may have any form of a single layer or a laminate.

  The pressure-sensitive adhesive layer is usually formed only on one surface side of the tape base material. The surface of the tape base material on which the pressure-sensitive adhesive layer is formed may be the surface on the side where the concave portion is formed when the concave portion is formed on only one surface of the tape base material. It is preferable that the surface is not formed (that is, the surface on the plane side). Therefore, as an opening tape, it is preferable that a concave portion is formed in advance only on one side of the tape base material, and an adhesive layer is formed on the flat side surface of the tape base material.

(Peeling surface)
In the opening tape of the present invention, the release treatment agent layer is optionally provided. That is, the opening tape may or may not have a release treatment agent layer. In addition, when the tape for opening has a peeling surface, this peeling surface may be a mold release processing agent layer surface, and may be a tape base-material surface.

  The release surface of the opening tape can be used to protect the adhesive layer. Also, the release surface of the opening tape is the application surface when the opening / closing tape of the bag is bonded to the end of the opening when the opening of the opened bag is folded and sealed after opening the bag. It can be used as (fixed area). In this way, the bag opening / closing tape can be opened and closed by laminating the opening / closing tape of the bag in such a manner that the adhesive surface of the opening / closing tape of the bag is superimposed on the peeling surface of the opening tape. It can be sealed in a form that can be repeated.

  In addition, when the tape for opening does not have a peeling surface, an adhesive layer can be protected by a separator. Such a separator can be appropriately selected from known separators.

  When the release surface of the opening tape is the surface of the release treatment agent layer, a release treatment agent (release treatment agent) is applied to a predetermined surface of the tape substrate to form a release treatment agent layer. Thus, the surface of the release treatment agent layer can be used as a release surface. Such a release treatment agent is not particularly limited, and for example, one type from known release treatment agents such as silicone release treatment agents, long-chain alkyl release treatment agents, and fluorine release treatment agents. Alternatively, two or more kinds can be appropriately selected and used.

  The thickness of the release agent layer is not particularly limited and can be arbitrarily set. Moreover, the mold release treating agent layer may have a single layer form or may have a laminated form.

  On the other hand, when the peeling surface of the opening tape is the surface of the tape substrate, the tape substrate is a low-adhesive substrate (for example, polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride). , Using fluoropolymers such as tetrafluoroethylene / hexafluoropropylene copolymer, chlorofluoroethylene / vinylidene fluoride copolymer, and olefin polymers such as polyethylene and polypropylene). It can be used as a surface.

(Method for manufacturing opening tape)
The method for producing the opening tape is not particularly limited, and can be appropriately selected from known methods for producing adhesive tapes. For example, an opening tape is formed on a surface of a tape base having a recess formed in advance, an adhesive layer formed on a flat surface of the tape base, and a surface of the tape base having a recess. In the case where it is constituted by a release treatment agent layer, a pressure-sensitive adhesive is applied to the surface on the flat side of the tape base material having a pre-formed concave portion, and dried and cured as necessary to perform the pressure-sensitive adhesive layer. In addition, a mold release treatment agent is applied to the surface of the tape base having a recess formed in advance, and a release treatment agent layer is formed by drying and curing as necessary. Can be manufactured.

  In addition, the manufacturing method of the tape base material which has the recessed part formed beforehand is not restrict | limited in particular. As a method for producing a tape base material having a recess formed in advance, a method of forming a recess by grinding or the like after producing a flat tape base material may be used. Moreover, the manufacturing method which produces the tape base material which has a recessed part from the beginning which produces a tape base material using the roll etc. which have a convex part is suitable. Thus, by manufacturing a tape base material in which a concave portion is formed in advance as a tape base material, it is not necessary to perform secondary processing of the tape base material, so that the tape base material can be manufactured at low cost. . Specifically, for example, when a tape base material is produced using an extrusion film forming process, a tape base material having a concave portion can be manufactured by molding using a roll having a convex portion. At this time, by adjusting the height and width of the convex portion formed on the roll, the pressure for pressing the roll, etc., the width and thickness of the concave portion formed on the tape substrate can be freely designed.

  The opening tape of the present invention is wound in a roll so that the pressure-sensitive adhesive layer formed on one surface of the tape substrate and the mold release treatment agent layer formed on the other surface are in contact with each other. Further, it can be provided in a form in which it is rewound during use and cut into an appropriate length.

  As such an opening tape, the length in the width direction and the length in the longitudinal direction are not particularly limited, depending on the formation position and width of the recess in the tape base material, the size and type of the bag to be stuck, etc. It can be selected appropriately. For example, the length in the width direction of the opening tape can be selected from the range of, for example, 3 mm to 10 cm (preferably 5 mm to 5 cm, more preferably 1 cm to 3 cm). On the other hand, the length in the longitudinal direction of the opening tape is the length of the sticking part of the bag.

  When the adhesive layer at the bag sealing portion of the opening / closing tape is applied to the residue of the opening tape remaining in the opening bag that is the bag body after the bag is cut and opened, the opening tape Distance between the end in the width direction (same as the end of the tape base) and the recess formed in the tape base (when the recess is shifted from the center of the tape base) Is preferably 3 mm to 8 cm, more preferably 5 mm to 5 cm, and particularly preferably 5 mm to 2 cm.

[Tape for opening and closing bags]
FIG. 4 is a schematic sectional view showing an example of the opening / closing tape for the bag of the present invention. In FIG. 4, 4 is a bag opening / closing tape (sometimes simply referred to as "opening / closing tape"), 4a is a bag attaching portion of the opening / closing tape 4, 4a1 is a tape base material at the bag attaching portion 4a, 4a2. Is a pressure-sensitive adhesive layer in the bag sticking part 4a, 4a3 is a release treatment agent layer in the bag sticking part 4a, 4b is a bag sealing part in the opening and closing tape 4, 4b1 is a tape base material in the bag sealing part 4b, 4b2 Is a pressure-sensitive adhesive layer in the bag sealing portion 4b, 4b3 is a release treatment agent layer in the bag sealing portion 4b, 5a is an open end portion (free end portion) of the bag sticking portion 4a or the tape substrate 4a1, and 5b is a bag. Bonding portion (bonding portion between tape base material 4a1 and tape base material 4b1) 5c is an open end portion (free end portion) of bag sealing portion 4b or tape base material 4b1. ), 6 is a knob. A is an adhesive part where the bag adhering part 4a and the bag sealing part 4b are detachably bonded, and B is a non-adhering part where the bag adhering part 4a and the bag sealing part 4b are not attached. is there.

  The opening / closing tape 4 shown in FIG. 4 has a bag adhering site 4a having a configuration in which an adhesive layer 4a2 is formed on one surface of a tape substrate 4a1 and a release agent layer 4a3 is formed on the other surface. An adhesive layer 4b2 is formed on a part on the open end (free end) 5c side of one surface of the tape substrate 4b1 on the release treatment agent layer 4a3 in FIG. 3, and the release treatment agent layer 4b3 on the other surface. When the pressure-sensitive adhesive layer 4b2 in the bag sealing part 4b having the structure formed is overlapped, the bag sticking part 4a and the bag sealing part 4b are adhered to the adhesive part A so as to be peeled off and non-adhered. The tape base material 4a1 and the tape base material 4b1 have a laminated structure in which the tape base material 4a1 and the tape base material 4b1 are continuously formed. Formed by being folded) And it has a structure.

  In addition, in the opening / closing tape 4 shown in FIG. 4, the pressure-sensitive adhesive layer 4 a 2 is used as a pressure-sensitive adhesive layer (sometimes referred to as a “bag-adhesive pressure-sensitive adhesive layer”) for bonding to the outer surface of the bag. On the other hand, the pressure-sensitive adhesive layer 4b2 is bonded to the mold release agent layer 4a3 until a bag having an opening (open bag) is folded and sealed, and when the bag is sealed, the open bag is folded. Adhesive layer for adhering to the end portion (opening portion) or the end-side portion at the time and holding the opening portion in a folded state (sometimes referred to as "bag sealing adhesive layer") ).

  Thus, the open / close tape of the present invention has a configuration in which an adhesive layer (adhesive layer for bag application) is formed on one surface of a tape base material, and the other surface is a release surface. And having a pressure-sensitive adhesive layer (a pressure-sensitive adhesive layer for bag sealing) partially formed on one surface of the tape base material and a bag-adhering portion for adhering to the outer surface of the bag, and the other And a bag sealing part stuck in a form that can be partly peeled on the peeling surface of the bag sticking part. The tape base material constituting the landing part and the tape base material constituting the bag sealing part are joined on one end side, and the bag sealing pressure-sensitive adhesive layer is formed on the joining part side. It is important to have no configuration.

  The opening / closing tape has a configuration in which the bag sealing part is laminated on the bag sticking part by sticking the bag sealing adhesive layer of the bag sealing part on the release surface of the bag sticking part. Therefore, the bag sealing part is stuck to the bag sticking part in a peelable (removable) form. That is, the bag sealing portion can be repeatedly attached and peeled from the bag attaching portion.

  In particular, in the opening / closing tape, the bag sealing pressure-sensitive adhesive layer at the bag sealing portion is not formed at the bonding portion side portion that is bonded to the bag adhering portion [that is, the bag sealing portion] And the bag pasting part are the parts on the open end side (or the free end part side) corresponding to the opposite side with respect to the joint part, and are closely bonded to the adhesive layer, while the part on the joint part side In this case, the bag sealing part is peeled from the bag sticking part and then the bag sealing part falls to the bag sticking part side by its own weight. The sealing part can effectively hold a state where it does not overlap with the bag attaching part, and the bag sealing part is prevented from re-adhering to the bag attaching part naturally.

  Accordingly, when the opening and closing tape is used to hold and seal the opening of the opening bag in a folded state (specifically, for example, the bag sealing portion is peeled off from the bag attaching portion). Later, the opening part of the opening bag is folded, and the end part or the part on the side of the folding bag is positioned on the peeling surface of the bag attaching part (between the bag sealing part and the bag attaching part). Position), and by sticking the adhesive layer for sealing the bag of the bag sealing part to the surface of the end part or the part on the end side when the opening is folded) Since the state where the bag sealing part is peeled off from the bag sticking part is effectively retained, the end part or the part on the end side when the opening is folded can be easily The adhesive layer of the bag sealing part is attached to the end part or the part on the end part side when the opening is folded. It can be. Therefore, when the opening / closing tape of the present invention is used, the open bag can be easily sealed in a form that can be opened and closed.

  In addition, since it has the structure where the bag sealing part and the bag sticking part are joined at the joint (particularly, the tape base material of the bag sealing part and the tape base material of the bag sticking part, When the bag sealing part is peeled off from the bag adhering part, the adhesive layer of the bag sealing part is attached to the bag. When peeled off from the release treatment layer of the wearing part, a rising force (for example, a rising force due to a repulsive force against bending) acts on the bag sealing part, so that the bag sealing part is quickly separated from the bag sticking part. It can be easily peeled off with a light force.

As described above, the opening / closing tape of the present invention can be sealed by holding the bag with the opening folded, by sticking it to the outer surface of the bag, and sticking to the outer surface of the bag. And a bag sealing portion for holding the opening in a folded state, and has the following configurations (a) to (e). is doing.
(A) The structure which the tape base material which comprises a bag sticking site | part, and the tape base material which comprises a bag sealing site | part are joined by one edge part side (b) The bag sticking site | part is a tape base The structure which has an adhesive layer for making it stick on the outer surface of a bag on one surface of a material, and has a mold release processing agent layer on the other surface (c) The bag sealing part is one side of a tape base material (D) A mold release treatment agent at the bag attachment site having a pressure-sensitive adhesive layer for holding the opening in a partially folded state and a mold release treatment agent layer on the other surface. A structure in which the bag-attached part and the bag-sealed part are laminated in a form in which the surface on the layer side and the surface on the adhesive-layer side of the bag-sealed part are in contact with each other. The structure which is not formed in the site | part of the junction part side joined to the bag sticking site | part

  In this invention, if the tape base material which comprises a bag sticking site | part and the tape base material which comprises a bag sealing site | part have the form joined by one edge part side, the joining form will be There is no particular limitation. For example, as shown in FIG. 4, one member (tape base material) is folded and laminated, and as shown in FIG. 5 (a) and FIG. Examples include a joining form in which members (tape base materials) are integrated by adhesion or the like. Specifically, in FIG. 4, the tape base material in which the tape base material constituting the bag attaching part and the tape base material constituting the bag sealing part are continuously formed is folded. 5 (a) and 5 (b), the tape base material constituting the bag adhering site and the tape base material constituting the bag sealing site are shown in FIGS. It has a structure formed by bonding two tape base materials by bonding or the like at a bonding portion or a portion other than the bonding portion. That is, the tape base material constituting the bag adhering site and the tape base material constituting the bag sealing site may be formed of a single long member, and bonded in a predetermined positional relationship. It may be formed by two members joined together.

  Accordingly, the opening / closing tape may be a folding tape having a structure in which a bag adhering portion and a bag sealing portion are formed by folding one member. It may be a composite tape having a structure in which a bag adhering portion and a bag sealing portion are formed by bonding by bonding or the like in a positional relationship.

  FIG. 5 is a schematic sectional view showing another example of the opening / closing tape for the bag of the present invention. In FIG. 5 (a), 71 is an opening / closing tape, 71a is a bag attaching part in the opening / closing tape 71, 71a1 is a tape base material in the bag attaching part 71a, 71a2 is an adhesive layer in the bag attaching part 71a, 71a3 Is a release treatment agent layer in the bag sticking part 71a, 71b is a bag sealing part in the opening and closing tape 71, 71b1 is a tape base material in the bag sealing part 71b, 71b2 is an adhesive layer in the bag sealing part 71b, 71b3 Is the mold release treatment agent layer at the bag sealing part 71b, 81a is the bag sticking part 71a or the open end part (free end part) of the tape substrate 71a1, and 71c is the bag sticking part 71a and the bag sealing part 71b. An adhesive layer to be joined (adhesive layer joining the tape base material 71a1 and the tape base material 71b1), 81b is a joint portion (tape base material 7) between the bag adhering portion 71a and the bag sealing portion 71b. a1 and the junction of the tape substrate 71b1), 81c is an open end of Fukurofutome site 71b or tape base material 71b1 (free end portion). In the opening and closing tape 71 shown in FIG. 5 (a), the bag adhering portion 71a and the bag sealing portion 71b are joined at the joining portion 81b, while the tape base material 71a1 and the tape base material 71b1 are: It is a separate member (tape base material), and the two tape base materials are joined by the adhesive layer 71c at the joint portion 81b.

  In FIG. 5 (b), 72 is an opening / closing tape, 72a is a bag attaching part in the opening / closing tape 72, 72a1 is a tape base material in the bag attaching part 72a, and 72a2 is an adhesive layer in the bag attaching part 72a. 72a3 is a release treatment agent layer at the bag attaching part 72a, 72b is a bag sealing part at the opening and closing tape 72, 72b1 is a tape base material at the bag sealing part 72b, and 72b2 is an adhesive layer at the bag sealing part 72b. 72b3 is a release treatment agent layer in the bag sealing part 72b, 82a is a bag sticking part 72a or an open end part (free end part) of the tape base material 72a1, and 72c is a bag sticking part 72a and a bag sealing part 72b. Is an adhesive layer (adhesive layer that joins the tape base material 72a1 and the tape base material 72b1), 82b is a joint portion (tape of the bag adhering part 72a and the bag sealing part 72b) Joint between wood 72a1 and the tape base material 72b1), 82c is an open end of Fukurofutome site 72b or tape base material 72b1 (free end portion). In the opening and closing tape 72 shown in FIG. 5 (b), the bag attaching part 72a and the bag sealing part 72b are joined at the joining part 82b, while the tape base material 72a1 and the tape base material 72b1 are It is a separate member (tape base material), and two tape base materials are joined by an adhesive layer 72c at a portion other than the joint portion 82b.

  As the opening and closing tape of the present invention, the adhesive layer is not formed in the part on the side of the bag adhering part in the bag sealing part, the part on the side of the joining part joined to the bag adhering part, The width of the portion where the pressure-sensitive adhesive layer is not formed (the length in the direction from the bonded portion to the free end portion) is not particularly limited. In the present invention, on the surface of the bag sealing part on the bag sticking part side, at least a part within a range of 1 mm from the joint part joined to the bag sticking part (preferably at least joined to the bag sticking part. The adhesive layer is not formed at a site within 3 mm from the joined part, more preferably at least a part within 5 mm from the joined part joined with the bag attaching site). desirable. That is, the pressure-sensitive adhesive layer at the bag sealing portion is from a portion separated by 1 mm or more (preferably a portion separated by 3 mm or more, more preferably a portion separated by 5 mm or more) from the joint between the bag sealing portion and the bag attaching portion. It is desirable that it be formed on the free end side.

  Thus, since the opening / closing tape of the present invention has a specific configuration of the bag attaching part and the bag sealing part, the open bag can be easily sealed in a form that can be opened and closed. Specifically, when the opening portion of the opening bag is folded and folded, the end portion (for example, the end portion of the opening portion) when folded or the portion on the end portion side is attached to the bag on the opening / closing tape. By attaching an opening / closing tape to the outer surface of the bag so that it can be positioned between the part and the bag sealing part, the end part of the opening bag when folded or the end part side By folding the part so that it is located between the bag sticking part and the bag sealing part, and sticking the bag sealing part of the opening / closing tape to the folded end part or the part on the end part side The opening bag can be sealed by holding the opening in a folded state.

  At this time, if the surface of the opening bag portion to which the bag sealing portion of the opening / closing tape is attached has a function as a release surface for the adhesive layer, the bag can be easily sealed in a form that can be repeatedly opened and closed. Can be stopped. Therefore, in the present invention, as shown below, the end of the opening bag when the opening is folded or the portion on the end side is a peeling surface for the adhesive layer of the bag sealing portion. Is preferred. In addition, as an opening bag in which the edge part at the time of folding the opening part in an opening bag or the site | part of this edge part becomes a peeling surface, for example, (i) Opening bag by the material which exhibits the function as a peeling surface (Ii) The back surface of the tape base material (the surface on which the adhesive layer of the tape base material is not formed) is peeled off from the open bag in which the outer surface of the tape is formed. An opening bag when cut along a recess formed in the tape base material in the opening tape, (iii) the back surface of the tape base material (the surface on which the adhesive layer of the tape base material is not formed) And an open bag in which an adhesive having a release surface is attached to a predetermined portion of the outer surface.

  As the opening and closing tape of the present invention, the length from the junction between the bag sealing part and the bag sticking part to the free end of the bag sealing part or the bag sticking part (length in the separating direction), The length in the direction parallel to the joint between the bag sealing part and the bag sticking part (length in the width direction) is not particularly limited, and the bag sealing part can be easily peeled from the bag sticking part with one hand. The length can be set to an optimum length in consideration of the handleability when the bag is made and the size of the bag.

  In addition, it is preferable that the knob | pick part is formed in the edge part of a bag sealing part as FIG. 4 shows. When the knob portion is formed, the bag sealing portion can be easily peeled or stuck using the knob portion.

  In FIGS. 4, 5 (a), (b), etc., the layer structure is illustrated so that the layer structure is clear. Therefore, the portion where the tape base material is folded has a width in the thickness direction, Although it is expressed in a form that is folded at two places at the top and bottom of the width, in reality, depending on the method of folding, various forms such as a form folded in a U-shape and a form folded in a V-shape It is the form folded by the form.

(Bag sticking part)
As described above, an adhesive layer (adhesive layer for bag application) is formed on one surface of a tape base material (sometimes referred to as a “base material for bag application”). In addition, the other surface is a peeling surface. Examples of base materials for attaching bags include paper base materials such as paper; fiber base materials such as woven fabrics, non-woven fabrics, felts and nets; metal base materials such as metal foils and metal plates; plastic films and sheets Plastic base materials such as rubber base materials such as rubber sheets, foams such as foam sheets, and laminates thereof (particularly, laminates of plastic base materials and other base materials, plastic films (or A suitable thin leaf body such as a laminate of sheets) may be used. As a base material for bag attachment, a plastic base material such as a plastic film or sheet can be suitably used. Examples of materials for such plastic films and sheets include olefin resins such as polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer (EVA); polyethylene terephthalate Polyester resins such as (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT); amide resins such as polyamide (nylon) and aromatic polyamide (aramid); methacrylates such as polymethyl methacrylate (PMMA) Resin; Acrylic resin; Styrene resin such as polystyrene, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin); Polyvinyl chloride (PVC); Polyvinyl Alcohol; polyphenylene sulfide (PPS); polyether ether ketone (PEEK); polycarbonates; urethane resins:; include various resins such as fluorine resin epoxy resin. These materials can be used alone or in combination of two or more.

  As the plastic substrate, a plastic substrate formed of a polyolefin resin (in particular, polyethylene or polypropylene, particularly polypropylene) is preferable from the viewpoints of flexibility, cost, and the like.

  In addition, the base material for bag pasting may have any form of a single layer or a laminate. In addition, the surface of the base material for bag attachment may be subjected to appropriate surface treatment such as physical treatment such as corona treatment or plasma treatment, or chemical treatment such as a primer.

  Although it does not restrict | limit especially as thickness of the base material for bag pasting, Usually, it is 5-1000 micrometers (preferably 10-500 micrometers).

  Moreover, the adhesive layer for bag attachment is formed of an adhesive, and the adhesive (sometimes referred to as “adhesive for bag attachment”) is not particularly limited. For example, an emulsion-type adhesive, a solvent Any type of pressure-sensitive adhesive such as a mold-type pressure-sensitive adhesive, a hot-melt pressure-sensitive adhesive, an oligomer-based pressure-sensitive adhesive, and a solid-type pressure-sensitive adhesive may be used. The adhesive for bag attachment can be used alone or in combination of two or more.

  Examples of adhesives for attaching bags include emulsion-based adhesives and solvent-based adhesives, such as acrylic adhesives, rubber-based adhesives, polyester-based adhesives, urethane-based adhesives, polyamide-based adhesives, and epoxy-based adhesives. Adhesives such as pressure-sensitive adhesives, vinyl alkyl ether pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and fluorine-based pressure-sensitive adhesives, and pressure-sensitive adhesives in respective forms (for example, emulsion form, solution form, etc.).

  In addition, as a sticking adhesive for bags, when it is a hot melt adhesive, a thermoplastic elastomer such as a styrene thermoplastic elastomer (styrene block copolymer), a polyurethane thermoplastic elastomer, a polyester thermoplastic elastomer, or a polyolefin And hot-melt pressure-sensitive adhesives having a base polymer of a thermoplastic resin such as a vinyl resin, a vinyl acetate resin, a polyester resin, a styrene resin, an acrylic resin, or a polyamide resin. Examples of the styrene thermoplastic elastomer and polyolefin resin include the styrene thermoplastic elastomer and polyolefin resin exemplified in the section of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer in the opening tape.

  In addition to the polymer component such as the adhesive component (base polymer), the adhesive for bag application includes a crosslinking agent (for example, an isocyanate-based crosslinking agent, an epoxy-based crosslinking agent, a melamine, depending on the type of the adhesive) Crosslinkers, oxazoline crosslinkers, etc.), tackifiers (eg, rosin resins, terpene resins, petroleum resins, phenolic resins, epoxy resins, amide resins, etc.), plasticizers, fillers, anti-aging An appropriate additive such as an agent, an ultraviolet absorber, an antioxidant, a thickener, a colorant, an antistatic agent, a foaming agent, and a surfactant may be contained.

  As a method for forming the pressure-sensitive adhesive layer for bag attachment, a method similar to the method for forming the pressure-sensitive adhesive layer in the opening tape can be employed.

  Although it does not specifically limit as thickness of the adhesive layer for bag sticking, For example, it can select from the range of about 10-1000 micrometers (preferably 20-500 micrometers). In addition, the adhesive layer for bag attachment may have any form of a single layer or a lamination.

  Furthermore, the peeling surface at the bag sticking site may be the peeling surface due to the surface of the release treatment agent layer or the surface of the bag sticking base material, similarly to the peeling surface at the opening tape. In the case where the release surface is the surface of the release agent layer, a known release agent (for example, a silicone release agent, a long chain alkyl release agent), as in the case of the opening tape. The surface of the release treatment agent layer can be used as a release surface by applying a fluorine release treatment agent or the like) onto a bag pasting base material to form a release treatment agent layer. The thickness of the release agent layer is not particularly limited and can be arbitrarily set. Moreover, the mold release treating agent layer may have a single layer form or may have a laminated form.

  On the other hand, when the peeled surface is the surface of the base material for bag attachment, as in the case of the opening tape, by using a low-adhesive base material (for example, a fluorine-based polymer or an olefin polymer), The surface of the wearing base material can be a release surface.

(Bag sealing part)
As described above, the bag sealing portion of the opening / closing tape is partially a pressure-sensitive adhesive layer (adhesive for bag sealing) on one surface of the tape base material (sometimes referred to as “bag sealing base material”). Agent layer) is formed, and the other surface is a release surface. As a bag sealing base material, the same thin-leaf body as the said bag sticking base material can be used, and a plastic-type base material can be used suitably like a bag sticking base material. As such a plastic base material, the same plastic base material as the bag pasting base material can be mentioned.

  In addition, the base material for bag sealing may have any form of a single layer or a lamination. The surface of the bag sealing substrate may be subjected to appropriate surface treatment such as physical treatment such as corona treatment or plasma treatment, or chemical treatment such as a primer.

  Although it does not restrict | limit especially as thickness of the base material for bag sealing, Usually, it is 5-1000 micrometers (preferably 10-500 micrometers).

  Of course, as shown in FIG. 4 (a), FIG. 5 (a) and FIG. 5 (b), when the bag sealing base material is continuously formed with the bag sticking base material (ie, When the base material for bag sealing and the base material for bag sticking are formed by folding one continuous base material), the base material for bag sealing and the base material for bag sticking Is the same substrate.

  Moreover, as a bag sealing adhesive layer, it can form with the adhesive similar to the said bag sticking adhesive layer.

  As a method for forming the pressure-sensitive adhesive layer for bag sealing, a method similar to the method for forming the pressure-sensitive adhesive layer or the pressure-sensitive adhesive layer for bag attachment in the opening tape can be employed.

  Although it does not specifically limit as thickness of the adhesive layer for bag sealing, For example, it can select from the range of about 10-1000 micrometers (preferably 20-500 micrometers). The bag sealing pressure-sensitive adhesive layer may have either a single layer or a stacked layer.

  In the bag sealing portion, the surface on which the pressure-sensitive adhesive layer of the bag sealing substrate is not formed (the back surface of the bag sealing substrate) is a release surface. Since the back surface of the base material for bag sealing at the bag sealing portion is a release surface, the opening / closing tape can be produced in a roll form or a laminated form.

  The release surface at the bag sealing site may be a release surface due to the surface of the mold release treatment agent layer, similar to the release surface at the opening tape and the release surface at the bag application site. There may be. In addition, when the release surface is the surface of the release agent layer, a known release agent (for example, a silicone release agent, a long-chain alkyl, etc.) is used in the same manner as in the case of an opening tape or a bag attachment site. A mold release treatment agent, a fluorine-type mold release treatment agent, etc.) on a base material for bag sealing to form a release treatment agent layer, thereby making the release treatment agent layer surface a release surface. Can do. The thickness of the release agent layer is not particularly limited and can be arbitrarily set. Moreover, the mold release treating agent layer may have a single layer form or may have a laminated form.

  On the other hand, when the release surface is the surface of a bag sealing substrate, a low-adhesive substrate (for example, a fluorine-based polymer or an olefin-based polymer) is used in the same manner as in the case of an opening tape or a bag attachment site By using it, the base material surface for bag sealing can be used as a peeling surface.

  In the opening and closing tape of the present invention, as shown in FIG. 6, the bag sealing portion may have the same shape or size as the bag sticking portion, and has a different shape or size. It may be. FIG. 6 is a schematic sectional view showing an example of the opening / closing tape of the present invention. In FIG. 6A, 91 is an opening / closing tape, 91a is a bag attaching part, 91a1 is a tape base material, 91a2 is an adhesive layer, 91a3 is a release treatment layer, 91b is a bag sealing part, and 91b1 is a tape base. 91b2 is a pressure-sensitive adhesive layer, 91b3 is a release layer, 91b4 is a print layer for a knob, 91c is an open end, 91d is a joint, 91e is an open end, and 91f is a knob. In the opening / closing tape 91 shown in FIG. 6 (a), the open end 91e of the bag sealing part 91b having the knob 91f is outside the open end 91c of the bag attaching part 91a attached to the bag. The bag sealing portion 91b having the knob portion 91f is larger than the bag attaching portion 91a attached to the bag.

  In FIG. 6B, 92 is an opening / closing tape, 92a is a bag attaching part, 92a1 is a tape base material, 92a2 is an adhesive layer, 92a3 is a release treatment layer, 92b is a bag sealing part, and 92b1 is a tape base. 92b2 is a pressure-sensitive adhesive layer, 92b3 is a release layer, 92b4 is a print portion for a knob, 92c is an open end, 92d is a joint, 92e is an open end, and 92f is a knob. In the opening / closing tape 92 shown in FIG. 6B, the open end 92e of the bag sealing part 92b having the knob 92f and the open end 92c of the bag attaching part 92a attached to the bag are the same. The bag sealing portion 92b having the knob 92f and the bag attaching portion 92a attached to the bag have the same size.

  In FIG. 6 (c), 93 is an opening / closing tape, 93a is a bag attaching part, 93a1 is a tape base material, 93a2 is an adhesive layer, 93a3 is a release treatment layer, 93b is a bag sealing part, and 93b1 is a tape base. 93b2 is a pressure-sensitive adhesive layer, 93b3 is a release treatment layer, 93b4 is a print layer for a knob, 93c is an open end, 93d is a joint, 93e is an open end, and 93f is a knob. In the opening / closing tape 93 shown in FIG. 6 (c), the open end portion 93c of the bag attaching portion 93a attached to the bag is outside the open end portion 93e of the bag sealing portion 93b having the knob portion 93f. The bag sealing portion 93b having the knob portion 93f is smaller than the bag attaching portion 93a attached to the bag.

(Manufacturing method of opening and closing tape)
The method for producing the opening / closing tape is not particularly limited as long as it is a method capable of producing the opening / closing tape having the above-described configuration. For example, as shown in FIG. 4A, the opening / closing tape has a configuration in which a pressure-sensitive adhesive layer is formed on one surface of a tape base material and a release treatment agent layer is formed on the other surface. On the release treatment agent layer at the sticking site, the pressure-sensitive adhesive at the bag-sealing site has a configuration in which a pressure-sensitive adhesive layer is formed on one surface of the tape substrate and the release treatment agent layer is formed on the other surface. The tape base material has a laminated structure in which layers are superposed, and the tape base material at the bag sticking site and the tape base material at the bag sealing site are continuously formed as a single sheet. When having a structure formed by being folded, (i) a tape base having a total length of the tape base material at the bag sticking site and the tape base material at the bag sealing site as the tape base material In the predetermined part in the predetermined surface of the tape base material, After forming the pressure-sensitive adhesive layer, the release treatment agent layer at the bag attachment site, the pressure-sensitive adhesive layer at the bag closure site, and the release treatment layer at the bag closure site, the release treatment agent at the bag attachment site A method for producing an opening / closing tape by folding and folding a tape base material so that an adhesive layer at a bag sealing portion is overlaid on the layer and folded at a predetermined portion; (ii) a tape base As a material, a tape base material having a total length of a tape base material in a bag sticking part and a tape base part in a bag sealing part is used, and a bag sticking is applied to a predetermined part on a predetermined surface of the tape base material. After forming the release treatment agent layer at the attachment site and the adhesive layer at the bag sealing site, the adhesive layer at the bag encapsulation site is superimposed on the release treatment agent layer at the bag application site, and To bend at a predetermined part, The tape base material is folded and folded, and further, an adhesive layer at the bag sticking site and a release treatment agent layer at the bag sealing site are formed on a predetermined site on the predetermined surface of the folded tape base material. By doing so, a method of manufacturing an opening / closing tape may be mentioned. In addition, when it has a knob | pick part, the printing layer for knob | pick parts can be formed in an appropriate step.

  In addition, the opening and closing tape of the present invention is an elongated continuous body in which the opening and closing tape in a state where the bag adhering portion and the bag sealing portion are laminated is continuously formed in the bag adhering portion. The pressure-sensitive adhesive layer and the release treatment agent layer at the bag sealing portion may be provided in the form of being rolled and overlapped in a roll shape, unwound at the time of use, and cut to an appropriate width.

[bag]
The bag of the present invention has an opening tape and / or an opening / closing tape attached to the outer surface. That is, the bag of the present invention is (1) a bag to which an opening tape is attached, and can be opened in a predetermined opening shape (sometimes referred to as an “opening tape attachment bag”). (2) A bag to which an opening / closing tape is attached, in which the opening can be held in a folded state and sealed (sometimes referred to as an “opening / closing tape attachment bag”). (3) A bag to which an opening tape and an opening / closing tape are attached, and when opening the bag, it can be opened in a predetermined opening shape, and after opening, the bag is opened. This is a bag that can be held and sealed in a folded state (sometimes referred to as “opening / opening / closing tape adhering bag”).

(Tape sticker bag for opening)
The opening tape sticking bag is attached to the opening tape for opening in a predetermined opening shape, so as a bag for attaching the opening tape, it is a closed system that does not have an opening. It is a bag (closed bag). Of course, the opening tape can be used as the opening tape.

  The site (position) of the outer surface (front surface) of the bag to which the opening tape is to be attached is particularly limited as long as it is a site where the bag is to be opened (the site to be opened) and the bag can be opened. Not. In the present invention, it is important that the opening tape is adhered to the outer surface portion of the bag where the recess of the opening tape is located on the planned opening portion of the bag. In this way, when the bag is opened by attaching the opening tape to the outer surface of the bag so that the recess of the opening tape is positioned on the planned opening portion of the bag, the tape in the opening tape The bag can be cut and opened along the recess formed in advance in the substrate, and as a result, the bag can be opened in a predetermined opening shape.

  Thus, the shape of the opening when the bag is opened along the recess formed in advance on the tape substrate in the opening tape corresponds to the shape of the recess formed in advance on the tape substrate in the opening tape. Therefore, as the opening tape, the shape of the recess formed in advance on the tape base material is the shape of the opening intended for the bag (predetermined opening shape). It is important to use an opening tape that has a corresponding shape.

  Specifically, as shown in FIG. 7, the opening tape can be attached to the outer surface of the bag. FIG. 7 is a schematic plan view showing an example of a bag to which an opening tape is attached. In FIG. 7, 10 is a four-sided bag, 10a is a peripheral sealing end of the four-sided bag 10, 10a1 is a sealing end on one short side, 10a2 is a sealing end on the other short side, and 10a3 is One long side sealing end, 10a4 is the other long side sealing end, 11 is an opening tape, and 11a is a recess formed in the tape substrate of the opening tape 11. In the four-sided bag 10 shown in FIG. 7, the inner surfaces of two sheet-like base materials are bonded to each other by thermal fusion or the like in the vicinity of the end portions of the four sides, and sealed end portions 10a (10a1, 10a2, 10a3). , 10a4) is a closed-type bag (closed-type bag). Opening tape 11 is provided on both sides of the short-side sealed end 10a1 side of the four-sided bag 10 on both sides. It is stuck on the entire surface in the width direction (lateral direction). That is, the opening tape 11 is entirely (sealed end portion 10a3) in a direction parallel to the end portion on the sealed end portion 10a1 side at a site inside the sealed end portion 10a1 in the four-sided bag 10. To the sealing end 10a4). In FIG. 7, only the one surface (front surface) side of the four-sided bag 10 is illustrated, and therefore the opening tape attached to the other surface (back surface) side is not illustrated. An opening tape is attached to both sides of the side of the side bag on the side of the sealed end 10a1 so as to be symmetrical.

  Further, the opening tape 11 includes a tape base material in which the concave portion 11a is formed linearly only on one side in the longitudinal direction and in the central portion, and an adhesive layer formed on the plane side surface of the tape base material. And a release treatment agent layer formed on the surface side having the concave portion of the tape base material. Note that the opening tape 11 has an adhesive for the opening tape 11 such that the recesses 11a formed on the tape base material of the opening tape 11 are located on the outer surfaces of the front and back of the part to be opened of the four-sided bag 10. It is stuck to the four-sided bag 10 using a layer. Therefore, the opening tape 11 is stuck to the four-sided bag in such a form that the surface on the concave portion 11a side formed on the tape base material, that is, the release surface by the release treatment agent layer is located on the outer surface side.

  The four-sided bag 10 and the opening tape 11 are formed in such a manner that the opening tape 11 is divided into an upper part and a lower part along the recess 11a formed in the tape base material of the opening tape 11. It can open by cut | disconnecting 11 whole. As described above, when opening the bag, since the recess formed in the tape base material in the opening tape is used, the bag is easily cut and opened with a predetermined opening shape by hand. Can be made.

  Moreover, the other example of the bag which stuck the tape for opening in FIG. 8 is shown. FIG. 8 is a schematic plan view showing another example of a bag having an opening tape attached thereto. In FIG. 8A, 12a is a four-sided bag, 12a1 is a sealing end portion in the four-sided bag 12a, 13a is an opening tape, and 13a1 is a recess formed in a tape base material in the opening tape 13a. Further, in FIG. 8B, 12b is a four-sided bag, 12b1 is a sealing end portion in the four-sided bag 12b, 13b is an opening tape, and 13b1 is a recess formed in a tape base material in the opening tape 13b. . The four-sided bags (12a, 12b) are respectively bonded to the inner surfaces of the two sheet-like base materials by thermal fusion or the like in the vicinity of the end portions of the four sides, similarly to the four-sided bag 10 shown in FIG. It has a sealed end portion (12a1, 12b1), and a tape for opening (13a, 13b) is stuck on the entire surface in the width direction on one side of the short side sealed end portion side. ing. The opening tape (13a, 13b) has a configuration in which concave portions (13a1, 13b1) are formed in a curved shape on only one side in the longitudinal direction of the tape base material.

  When the bag is a four-sided bag, it is usually difficult to open the long side sealing end portion side with a good aesthetics because the side to be opened is long, but the opening tape of the present invention , The bag can be opened at a predetermined site and in a predetermined opening shape regardless of the length of the end portion to be opened. As shown in FIG. 9, the bag is a four-sided bag. Even if an opening tape is attached to a portion of the long side at the sealing end portion side, it can be opened with a predetermined opening shape with good aesthetics. Thus, it does not restrict | limit especially as a site | part which sticks the tape for opening to a bag.

  FIG. 9 is a schematic plan view showing another example of a bag having an opening tape attached thereto. In FIG. 9, 14 is a four-sided bag, 14a is a peripheral sealing end of the four-sided bag 14, 14a1 is a sealing end on one short side, 14a2 is a sealing end on the other short side, and 14a3 is One long side sealing end, 14a4 is the other long side sealing end, 15 is an opening tape, and 15a is a recess formed in the tape substrate of the opening tape 15. The four-sided bag 14 shown in FIG. 9 is formed by adhering the inner surfaces of two sheet-like base materials to each other by thermal fusion or the like in the vicinity of the end portions of the four sides, thereby sealing end portions 14a (14a1, 14a2, 14a3). 14a4) is a closed-type bag, and the opening tape 15 is provided on one side of the four-sided bag 14 on the inner side of the long side sealing end 14a3. In the direction parallel to the end on the side of the portion 14a3, the entire surface is adhered (from the sealing end 14a1 to the sealing end 14a2).

  In the present invention, the opening tape may be attached only to one side of the bag as shown in FIG. 10 (a), and is attached to both sides of the bag as shown in FIG. 10 (b). May be. FIG. 10 is a schematic cross-sectional view showing an example of a bag with an opening tape attached thereto. In FIG. 10 (a), 15a is a four-sided bag, 15a1 is a sealing end of the four-sided bag 15a, 16a is an opening tape, 16a1 is a tape substrate in the opening tape 16a, and 16a2 is an adhesive in the opening tape 16a. The agent layer, 16a3 is a recess formed in the tape base material 16a1, and 16a4 is a release treatment layer in the opening tape 16a. In FIG. 10B, 15b is a four-sided bag, 15b1 is a sealing end of the four-sided bag 15b, 16b is an opening tape, 16b1 is a tape base material for the opening tape 16b, and 16b2 is an opening tape 16b. 16b3 is a recess formed in the tape substrate 16b1, 16b4 is a release treatment layer in the opening tape 16b, 16c is an opening tape, 16c1 is a tape substrate in the opening tape 16c, and 16c2 is for opening An adhesive layer in the tape 16c, 16c3 is a recess formed in the tape base material 16c1, and 16c4 is a release treatment layer in the opening tape 16c. In FIG. 10 (a), an opening tape 16a is attached to one side of the four-sided bag 15a. On the other hand, in FIG.10 (b), the tape 16b for opening and the tape 16c for opening are stuck on each surface (on both surfaces) of the four-sided bag 15b in the form of front and back.

  As shown in FIG. 10 (a) and the like, when attaching an opening tape to one side (one side) of various bags (such as a four-sided bag), as shown in FIG. It is preferable that the surface on the side where the tape is not adhered is subjected to a pressing process. FIG. 11 is a schematic view showing an example of a bag in which an opening tape is attached to one surface and a pressing process is performed on the other surface, and FIG. 11A is a cross-sectional view of a four-sided bag. 11 (b) is a plan view of one side of the four-sided bag (the side of the surface on which the opening tape is adhered), and FIG. 11 (c) is the other side (the stamping portion is formed). FIG. In FIG. 11, 17 is a four-sided bag, 17a is a sealing end, 17a1 is an upper sealing end, 17a2 is a lower sealing end, 17a3 is a left sealing end, and 17a4 is a right end. Sealing end, 18 is an opening tape, 18a is a tape base material in the opening tape 18, 18a1 is a recess formed in the tape base material 18a, 18b is an adhesive layer in the opening tape 18, and 19 is a stamping section. It is. In the four-sided bag 17 shown in FIG. 11, an opening tape 18 is affixed to one surface, and a pressing part 19 is formed on the other surface. More specifically, the opening tape 18 has a recess 18a1 linearly in the longitudinal direction at the center in the width direction, and the upper end of the sealing end 17a in the four-sided bag 17 is sealed. In the part on the toe end 17a1 side, the longitudinal direction is in a direction parallel to the end on the upper sealing end 17a1 side, and between the ends on the left and right sealing end parts (17a3, 17a4) side. It is affixed. On the other hand, the stamping portion 19 is linearly formed in a portion of the sealing end portion 17a of the four-sided bag 17 on the upper sealing end portion 17a1 side in a direction parallel to the end portion on the upper sealing end portion 17a1 side. Formed on the tape base material 18a in the opening tape 18 that is formed entirely between the end portions on the left and right sealing end portions (17a3, 17a4) side and adhered to the other surface. It is formed at a position corresponding to the position of the recessed portion 18a1. Therefore, the concave portion 18a1 formed in the tape base material 18a of the opening tape 18 and the press-cut processing portion 19 have a corresponding positional relationship as a target on the front and back sides. Therefore, when the four-sided bag 17 is manually cut and opened along the recess 18a1 formed in advance in the tape base material 18a of the opening tape 18, the other side corresponding to the position of the recess 18a1 and the recess 18a1 is opened. The four-sided bag 17 can be opened along with the press-cut portion 19 formed at the position on the surface side.

  In the present invention, as the press-cut portion formed in the bag, for example, a known or conventional process for forming the press-cut portion on the surface base material constituting the bag (for example, half cut processing, cut processing) Or embossing, etc.).

  In addition, when the opening tape is only attached to one surface of the bag, when the paper is cut by hand, the other surface is also cut in a predetermined shape along the recess with respect to the opening tape. May be cut in an unexpected direction, but both sides of the opening can be opened by providing the stamped portion at a position corresponding to the position of the recess formed on the tape base material in the opening tape. It can cut | disconnect in the predetermined | prescribed shape along the recessed part regarding the tape for use. Therefore, when the opening tape is attached to only one surface of the bag, the other surface is pressed into a position corresponding to the position of the recess formed in the tape base material in the opening tape. It is preferable that a portion is provided.

  In addition, when attaching the opening tape to the surfaces on both sides of the bag, as shown in FIG. 12, the surfaces on both sides of the bag may be attached in a form that is symmetrical between the front and back, As shown in FIG. 13, it may be stuck in a form that is asymmetrical. FIG. 12 and FIG. 13 are schematic views showing examples of a four-sided bag to which an opening tape is attached. In FIG. 12, 20 is a four-sided bag, 20a is one surface (front surface) of the four-sided bag 20, 20b is the other surface (back surface) of the four-sided bag 20, 21a is an opening tape, and 21a1 is an opening tape 21a. 21b is an opening tape, 21b1 is a recess formed on the tape substrate in the opening tape 21b, and 22 is an opened bag (opening) after the four-sided bag 20 is opened. Bags 22a are openings of the opening bag 22. In FIG. 12, the opening tape (21a, 21b) having the tape base material on which the linear recesses (21a1, 21b1) are formed is formed on the respective surfaces (front surface, back surface) of the four-sided bag 20 on the recesses (21a1). , 21b1) is affixed in such a manner that the front and back are symmetrical, and the front and back are symmetrical along the linear recesses (21a1, 21b1) arranged in this front and back symmetrical form. Has been opened.

  On the other hand, in FIG. 13, 23 is a four-sided bag, 23a is one side (front side) of the four-sided bag 23, 23b is the other side (back side) of the four-sided bag 23, 24a is an opening tape, and 24a1 is for opening. Recesses formed in the tape base material in the tape 24a, 24b is an opening tape, 24b1 is a recess formed in the tape base material in the opening tape 24b, and 25 is an opened bag after the four-sided bag 23 is opened. (Open bag), 25a is an opening of the open bag 25. In FIG. 13, the opening tape (24a, 24b) having a tape base material on which curved concave portions (24a1, 24b1) are formed is formed on the respective surfaces (front surface, rear surface) of the four-sided bag 23 on the concave portions (24a1 , 24b1) is affixed in such a manner that the position of the front and back is asymmetrical, and the shape of the front and back is asymmetrical along the curved concave portions (24a1, 24b1) arranged in the form of asymmetrical front and back Has been opened.

  In addition, as shown in FIG. 13, when opening tapes are attached to both sides of a bag such as a four-sided bag in such a manner that the recesses formed in the tape base material are asymmetrical on the front and back sides, Therefore, when opening the opening after being cut and opened by hand, the opening on one surface is easily held by hand, so the opening can be easily opened.

  Therefore, when attaching an opening tape to both sides of the bag, or when attaching an opening tape to one side of the bag and forming a stamped portion on the other side, the opening on one side The opening shape may be at least partially asymmetric on the front and back sides so that the portion can be easily held by hand. In addition, it opened by combining the opening tape which has the recessed part of a predetermined shape, or combining the opening tape which has a recessed part of a predetermined shape, and a press-cut process part of a predetermined shape The opening shape can be asymmetric at least partially on the front and back.

  In the present invention, it is preferable that the bag to which the opening tape is attached is formed with a break for cutting when the bag is opened. As the cut for such a cutting trigger, it can be formed on at least one end (one end or one end on either side) of the portion of the bag to which the opening tape is attached, As shown in FIG. 14, it is preferably formed at the end of the bag in such a form that the recess formed in the tape base material in the opening tape is included. FIG. 14 is a schematic plan view showing an example of a bag to which an opening tape is attached and a cut triggering cut is formed. In FIG. 14, 26 is a four-sided bag, 26a is a sealing end, 27 is an opening tape, 27a is a recess formed in the tape base material of the opening tape 27, and 28 is a cutting trigger cut.

  In addition, as an opening tape, in FIGS. 7-9, 11-14, etc., on one side or both sides of the bag, on one side of the sealed end side, the end on the sealed end side The part on the outer surface of the bag to be attached is not particularly limited as long as it is a part that can open the bag. As the opening tape, for example, as shown in FIG. 15, the bag can be opened at the corner of the bag in an oblique direction from the upper end to the side end so that the bag can be opened. It may be affixed. FIG. 15 is a schematic plan view showing an example of a bag with an opening tape attached thereto. In FIG. 15A, 29a is a four-sided bag, 29a1 is a sealing end, 30a is an opening tape, and 30a1 is a recess formed in the tape substrate of the opening tape 30a. In FIG. 15B, 29b is a four-sided bag, 29b1 is a sealing end, 30b is an opening tape, and 30b1 is a recess formed in the tape base material of the opening tape 30b.

  As described above, in the present invention, a portion from the end portion to the end portion on the outer surface (surface) of the bag (for example, a portion from the end portion in the width direction to the end portion, or a portion from the end portion to the end portion in the oblique direction) Etc.) can be suitably attached to the opening tape. Therefore, as a bag, it is preferable that the opening tape is stuck so that it can be cut | disconnected from the edge part which has opposed in the width direction, or is not opposed. That is, when the bag is opened, the bag is divided into an opening bag having an opening as a bag main body portion and a cutting separation portion separated from the bag main body portion (opening bag). The opening tape can be attached to the outer surface of the bag.

  In addition, the opening tape may be stuck not to the site | part from the edge part to an edge part in the outer surface (surface) of a bag but to the site | part from the edge part in the outer surface of a bag. In this case, when the bag is opened, the opening portion of the opening bag is not opened from the end portion to the end portion, and is partially opened.

  The bag with the opening tape attached is (i) for opening the bag so that a recess formed in advance on the tape base material in the opening tape is located at the site to be opened (the site to be opened). (Ii) a member for forming a bag (or a bag member) (for example, in the case of a closed bag, it is closed (sealed) and closed when manufacturing the closed bag) In the previous member), the opening tape is adhered so that the recess formed in advance in the tape base material in the opening tape is located in the portion corresponding to the portion to be opened when the bag is formed. Then, it can be manufactured by various methods such as a method of forming a bag.

(Opening and closing tape attaching bag)
Since the opening and closing tape for holding the opening and closing tape is attached to the opening and closing tape attaching bag, the opening and closing tape for holding the opening and closing tape is attached. Any of the pouches may be used. Of course, the opening / closing tape can be used as the opening / closing tape.

  Examples of the position (position) of the outer surface (front surface) of the bag to which the opening / closing tape is attached include an opened bag after opening the bag (open bag) and an open bag having an opening in advance. If it is a site | part which can seal various bags with the form which can be opened and closed, it will not restrict | limit in particular. In the present invention, when the opening part of the opening bag such as an opening bag is folded and folded, the end part or the part on the end side when the opening part is folded, the bag attaching part and the bag sealing part in the opening and closing tape It is important to attach an opening / closing tape to a portion of the outer surface of the open bag that can be positioned between the two portions. In this way, the opening or closing of the opening / closing tape is opened and closed so that the end portion or the end portion side portion when the opening portion of the opening bag is folded can be positioned between the bag attaching portion and the bag sealing portion. When the opening of the bag is folded and sealed by adhering the tape to the outer surface of the bag, the end of the bag or the portion on the end side when the opening of the bag is folded is the bag in the opening / closing tape. Folding so that it is located between the sticking part and the bag sealing part, and sticking the bag sealing part of the opening and closing tape to the end or the part on the end side when the opening is folded As a result, it becomes possible to hold an opening bag such as an opening bag after opening the closed bag with the opening folded, and the opening bag can be sealed in a form that can be opened and closed. .

  At this time, since the non-adhesive part that is not bonded on the bonding part side is provided in the bag sticking part and the bag sealing part in the opening and closing tape, before folding the opening part of the opening bag, Even if the bag sealing part in the opening / closing tape is peeled off from the bag sticking part, the peeled state is maintained, so the end part or the end part side when the opening part of the opening bag is folded and folded A site | part can be easily located between a bag sealing site | part and a bag sticking site | part, Therefore, an opening bag can be sealed easily.

  Specifically, the opening and closing tape can be attached to the outer surface of the bag as shown in FIG. FIG. 16 is a schematic plan view showing an example of a bag having an opening / closing tape attached thereto. 16 (a) and 16 (b), 31a and 31b are open bags, 31a1 and 31b1 are openings in the open bags (31a and 31b), and 31a2 and 31b2 are open bags (31a and 31b, respectively). , 31b), sealing end portions 32a and 32b are respectively open / close tapes. The open bags (31a, 31b) shown in FIG. 16 are the four-side bags shown in FIG. 7 (that is, the inner surfaces of the two sheet-like base materials are bonded by heat fusion or the like in the vicinity of the four side edges. A four-sided bag produced by bonding to form a sealed end) is an open bag in a form in which any one of the sealed end portions is cut and opened.

  In FIG. 16 (a), the opening / closing tape 32a is attached to a part (near the center) in the width direction on one outer surface (surface) of the opening bag 31a. On the other hand, in FIG.16 (b), the opening-and-closing tape 32b is stuck over the whole surface of the width direction on one outer surface (surface) in the opening bag 31b.

  The opening / closing tapes (32a, 32b) are opening / closing tapes similar to the opening / closing tape 4 shown in FIG. That is, the opening / closing tape (32a, 32b) has a configuration in which a pressure-sensitive adhesive layer (adhesive layer for bag application) is formed on one surface of the tape base material and the other surface is a release surface. And a bag sealing portion having a configuration in which a pressure-sensitive adhesive layer (bag sealing pressure-sensitive adhesive layer) is partially formed on one surface of the tape base material and the other surface is a release surface. And the tape base material constituting the bag sticking part and the tape base material constituting the bag sealing part are joined at one end side, and the bag sealing is carried out at the joining part side. The pressure-sensitive adhesive layer is not formed. In addition, the tape base material which comprises a bag sticking site | part, and the tape base material which comprises a bag sealing site | part are formed when one continuous tape base material is bend | folded and folded. Have a structure.

  The bag sticking part of the opening and closing tape (32a, 32b) is a part used for sticking to the outer surface of the bag. In FIGS. 16 (a) and 16 (b), the adhesive of the bag sticking part. Using the layers, the opening / closing tapes (32a, 32b) are adhered to the outer surfaces of the open bags (31a, 31b). Moreover, the bag sealing part is stuck on the peeling process layer of the said bag sticking part.

  Thus, since the opening and closing tapes (32a and 32b) are adhered to the opening bags (31a and 31b), when the opening bags (31a and 31b) are sealed, the opening portions (31a1 and 31b) are sealed. 31b1) is attached to the side to which the opening / closing tape (32a, 32b) is attached, and the end (tip) or the end side portion when folded is attached to the bag on the opening / closing tape (32a, 32b). Fold and fold so that it is located between the part and the bag sealing part, and attach the bag sealing part of the opening and closing tape (32a, 32b) to the end part or the part on the end part side when folded Thus, the opening bags (31a, 31b) can be sealed by holding the opening portions (31a1, 31b1) in a folded state.

  At this time, the bag sealing part in the opening / closing tape may be peeled off from the bag attaching part in advance before folding and folding the opening part of the opening bag, and after folding and folding the opening part of the opening bag. When the folded or end part or the part on the end part side is positioned between the bag sealing part and the bag sticking part, it may be peeled off from the bag sticking part. As described above, the bag adhering site and the bag sealing site in the opening / closing tape are provided with non-adhered sites that are not bonded on the joint side as shown in FIG. Even before the opening portion of the opening bag is folded and folded, the bag sealing portion of the opening and closing tape may be peeled off from the bag attaching portion in advance, and the bag sealing portion may adhere to the bag attaching portion by its own weight. Without being peeled off.

  Specifically, as shown in FIG. 17, the opening bag can be sealed with an opening / closing tape. 17 is a schematic cross-sectional view showing an example of a state in which the opening bag shown in FIG. 16 (a) is sealed with an opening / closing tape, FIG. 17 (a) is a plan view, and FIG. 17 (b) is a plan view. It is sectional drawing. 17 (a) and 17 (b), 31a3 is a folded portion when the opening 31a1 is folded to the surface on the opening / closing tape 32a side, 32a1 is a bag sticking site, 32a1a is a tape base material, 32a1b is an adhesive layer (adhesive layer for bag attachment), 32a2 is a bag sealing part, 32a2a is a tape base material, and 32a2b is an adhesive layer (adhesive layer for bag sealing). Other symbols are the same as described above.

  In FIG. 17, the opening bag 31a is folded at the folding portion 31a3 and folded so that the end of the opening 31a1 is located between the bag attaching portion 32a1 and the bag sealing portion 32a2 in the opening / closing tape 32a. A bag sealing portion 32a2 is attached to a portion on the end side of the opening 31a1, and the opening bag 31a is sealed with the opening 31a1 being folded. Accordingly, the end portion or the end portion side portion when folded is the end portion or end portion side portion of the opening.

  In FIG. 17, the opening side portion is folded once and folded so that the end of the opening portion can be positioned between the bag attaching portion and the bag sealing portion. The number of times of folding may be two or more. By folding the opening part twice or more, the opening bag can be sealed with a more excellent hermeticity.

  In addition, it can seal in the form which can open and close an opening bag easily by making the surface of the opening bag which sticks a bag sealing part into a peeling surface.

  In the present invention, as shown in FIG. 16, the opening / closing tape can be attached to the entire surface or a part of the width direction of the bag, but the part to which the opening / closing tape is attached is not particularly limited, and the bag Can be set as appropriate according to the number of times of folding when the opening or opening planned portion and the shape thereof, the portion on the opening portion side, and the like are folded.

  Moreover, in FIG.16 and FIG.17, the opening-and-closing tape is a form in which the site | part by the side of the open end which can peel a bag sealing part from a bag sticking site | part becomes the opening part side of a bag, Affixed to the outside of the bag.

  The bag with the opening and closing tape attached is (i) a method of attaching the opening and closing tape to a predetermined portion of the outer surface of the bag, (ii) a member (or bag member) for forming the bag (for example, In the case of a closed system bag, the opening and closing tape is placed at a position where the bag is formed at a predetermined position when the bag is formed in the closed system bag (the member before closing when the closed system bag is manufactured). Can be produced by various methods such as a method of forming a bag.

(Opening / opening / closing tape attaching bag)
The opening / opening / opening tape sticking bag has an opening tape for opening in a predetermined opening shape and an opening / closing tape for holding the opening in a folded state for sealing. The bag can be opened in a predetermined opening shape, and after opening, the opening bag can be sealed in a form that can be opened and closed. The bag for adhering the opening tape and the opening / closing tape may be either a closed bag or an open bag, but it is preferably a closed bag similar to the open tape bag. Of course, as the opening tape and the opening and closing tape, the opening tape and the opening and closing tape can be used.

  The opening / opening / closing tape adhering bag is a bag having a combination of the opening tape adhering bag and the opening / closing tape adhering bag. That is, as a site | part of the outer surface of the bag which affixes the tape for opening, the site | part which can open a bag is just the site | part to which the bag is to be opened similarly to the said tape adhering bag for an opening. Moreover, as a site | part of the outer surface of the bag which affixes an opening / closing tape, the opening bag after opening a bag can be sealed with the form which can be opened and closed similarly to the said opening / closing tape adhering bag. Such a site may be used. In addition, the opening part of an opening bag can be made into the opening part which cut | disconnected along the recessed part of the tape for opening, and opened.

  Specifically, as shown in FIG. 18, the opening tape and the opening / closing tape can be attached to the outer surface of the bag. FIG. 18 is a schematic plan view showing an example of a bag to which an opening tape and an opening / closing tape are attached. 18 (a) and 18 (b), 33 is a four-sided bag, 33a is a peripheral sealing end of the four-sided bag 33, 33a1 is one short side sealing end, and 33a2 is the other short side. The side sealing end, 33a3 is formed on one long side sealing end, 33a4 is formed on the other long side sealing end, 34 is an opening tape, and 34a is formed on the tape base material of the opening tape 34. 35 is an opening / closing tape, 36 is an opening tape, 36a is a recess formed in the tape substrate of the opening tape 36, and 37 is an opening / closing tape. 18 (a) and 18 (b), the four-sided bag 33 is similar to the four-sided bag shown in FIG. 7 and the like, and the inner surfaces of the two sheet-like base materials are arranged near the end portions of the four sides. It is a closed type bag produced by bonding by heat sealing or the like to form the sealed end portion 33a (33a1, 33a2, 33a3, 33a4). In FIG. 18 (a), the opening tape 34 is formed on the both sides of the short-side sealing end portion 33a1 side of the four-sided bag 33, and the entire surface in the width direction (lateral direction) is the target on the front and back sides. It is affixed to. Moreover, in FIG.18 (b), the tape 36 for opening is a longitudinal direction (longitudinal direction) in the form which becomes object by the front and back on both surfaces in the site | part of the long side sealing end part 33a3 side in the four-sided bag 33. It is stuck on the entire surface.

  In addition, the opening and closing tape 35 and the opening and closing tape 37 are opened when the opening when the opening tape 34 is cut along the recess 34a of the opening tape 34 and the opening 36 when the opening tape 36 is folded is folded. The edge part of the part is stuck on the part which can be located between the bag sticking part and the bag sealing part. In this way, when the opening tape and the opening / closing tape are used in combination, it is important that the opening / closing tape is attached to a site that is in an appropriate positional relationship with the opening tape. is there.

  The opening tape (34, 36) has at least a tape base material and an adhesive layer, and a tape base material having a recess formed in advance is used as the tape base material. The opening / closing tape (35, 37) has a configuration in which an adhesive layer is formed on one surface of the tape base material and the other surface is a release surface, and on the outer surface of the bag. It has a configuration in which a pressure-sensitive adhesive layer is formed on one surface of a tape base material and a bag pasting site for sticking, and is pasted in a form that can be partially peeled on the peeling surface of the bag pasting site. And a tape base material constituting the bag sticking part and a tape base material constituting the bag sealing part on one end side. And the bag sealing adhesive layer is not formed on the side of the joint.

  Thus, since the opening tapes (34, 36) are stuck to the four-sided bag 33 shown in FIGS. 18 (a) and (b), the four-sided bag 33 is attached to the opening tape (34, 36). 36) (34a, 36a) can be easily opened by cutting with a predetermined opening shape by hand, and after opening, the end of the opening cut at the time of opening (the tip) Part) side part is folded and folded so that it is located between the bag adhering part and the bag sealing part in the opening and closing tape (35, 37), and the part on the end part side of the folded opening part By sticking the bag sealing portion of the opening and closing tape (35, 37), the opening bag can be held and sealed with the opening folded.

  Specifically, the four-sided bag 33 shown in FIG. 18A uses the recess 34a of the opening tape 34 along the recess 34a (in the XY line in FIG. 18A), When the bag is manually cut and opened, it is divided into a bag main body portion that becomes an open bag and a cutting and separating portion that is separated from the bag main body portion. For example, as shown in FIG. 38 is obtained. Thus, after opening, for example, as shown in FIG. 20, the opening side opening 35a (that is, the opening cut at the time of opening) of the opening bag has a portion on the end (front end) side. Is folded and folded so as to be positioned between the bag adhering portion 35a and the bag sealing portion 35b, and the bag sealing portion of the opening / closing tape 35 is formed on the surface of the end portion of the folded opening 38a. By sticking the adhesive layer 35b2 of 35b, the opening bag 38 can be held and sealed with the opening 38a folded. The cutting / separating unit is usually discarded.

  FIG. 19 is a schematic view showing an example of a state in which a bag with an opening tape and an opening / closing tape attached is opened using a recess of the opening tape, FIG. 19 (a) is a plan view, FIG. 19B is a cross-sectional view. FIG. 20 is a schematic view showing an example of a state in which a bag with an opening tape and an opening / closing tape attached is opened and then sealed using the opening / closing tape. ) Is a plan view, and FIG. 20B is a cross-sectional view. 19-20, 35a is a bag sticking part of the opening and closing tape 35, 35a1 is a tape base material in the bag sticking part 35a, 35a2 is an adhesive layer in the bag sticking part 35a, and 35b is a bag of the opening and closing tape 35. 35b1 is a tape base material in the bag sealing part 35b, 35b2 is an adhesive layer (bag sealing adhesive layer) in the bag sealing part 35b, 35c is a knob of the opening / closing tape 35, and 38 is 4 An opening bag (bag body portion) in which the side bag 33 is opened, 38a is an opening portion in the opening bag 38, 38b is a bent portion when the opening portion 38a of the opening bag 38 is bent, and 39 is an opening bag in the opening tape 34. 38a (the opening tape bag main body adhering part), 39a is the opening tape bag main body adhering part attached to one surface of the opening bag 38, 39a1 is the opening tape bag main body Adhering part 9a is a tape base material of the opening tape bag main body attaching portion 39a, 39a3 is an adhesive layer of the opening tape bag main body attaching portion 39a, and 39a4 is a mold release of the opening tape bag main body attaching portion 39a. The treatment layer, 39b is an opening tape bag main body attaching part attached to the other surface of the opening bag 38, 39b1 is a recess of the opening tape bag main body attaching part 39b, and 39b2 is an opening tape bag main body attaching. The tape base material of the part 39b, 39b3 is an adhesive layer of the opening tape bag main body attaching part 39b, and 39b4 is a release treatment layer of the opening tape bag main body attaching part 39b. The other symbols are the same as described above.

  In FIG. 19, the opening bag 38 has a configuration in which the opening bag 38 is cut along the recesses 34 a of the opening tape 34 attached to both sides of the four-sided bag 33 in the form of the front and back (in the XY line). The opening tape bag main body sticking part (39a, 39b) which is the site | part of the lower side in the opening tape 34 is stuck on the outer surface of the opening part 38a of the opening bag 38 as a bag main body part. It remains in the state. Therefore, since the surface of the opening 38a is the surface of the opening tape bag main body attaching portion (39a, 39b), it is a release surface by the release treatment agent layer. Of course, the opening / closing tape 35 is stuck to the unsealed bag (bag main body portion) 38 as it is. In addition, on the outer surface of the cutting and separating portion (the portion on the upper side of the XY line) of the four-sided bag 33, there is a portion on the upper side (the sealing end 33a1 side in the four-sided bag 33) of the opening tape 34. They are stuck and discarded.

  In FIG. 20, the opening bag 38 is a bent portion 38b, the opening 38a is on the surface where the opening / closing tape 35 is attached, and the end of the opening 38a is connected to the bag attaching portion 35a and the bag seal. It has the structure folded and folded so that it may be located between the stop part 35b, and the bag sealing adhesive layer 35b2 of the bag sealing part 35b is attached to the opening tape bag body. It has the structure stuck on the surface of the peeling process layer 39b4 of the part 39b.

  When sealing the opening bag 38, the bag sealing part 35b is peeled from the bag sticking part 35a. At this time, the tape base material 35a1 constituting the bag sticking part 35a and the bag sealing part Since the tape base material 35b1 constituting 35b is joined on one end side, and the bag sealing adhesive layer 35b2 is not formed on this joined side, Even if the stop part 35b is peeled from the bag sticking part 35a, the bag sealing part 35b is not stuck to the bag sticking part 35a by its own weight, and the peeled state is effectively maintained. Therefore, the end portion of the opening 38a of the opening bag 38 can be easily positioned between the bag sealing portion 35b and the bag attaching portion 35a, and the opening 38a is easily folded. It can be held and sealed in a state.

  When the bag sealing part 35b is peeled from the bag sticking part 35a, as shown in FIG. 19 and FIG. 20, when the knob part 35c is provided in the bag sealing part 35b, the knob part By holding 35c by hand, the bag sealing part 35b can be easily peeled from the bag sticking part 35a by hand.

  In particular, the surface of the unsealed bag 38 is not a surface (peeling surface) that exhibits (or has) releasability (peelability) with respect to the bag sealing pressure-sensitive adhesive layer 35b2 of the bag sealing portion 35b. The surface to which the bag sealing part 35b is affixed (that is, the surface of the end part side of the opening part 38a of the opening bag 38) is the surface of the tape bag main body attaching part 39b for opening (that is, the mold release treatment agent). Therefore, the opening bag 38 can be sealed in a form that can be opened and closed.

  Therefore, as shown in FIG. 21, the opening / opening / opening-tape adhesive bag of the present invention is provided with at least the opening tape on the surface side where the opening / closing tape is not provided. After opening along the recess of the bag, the opening of the opened bag is folded to the side where the opening / closing tape is provided, and the bag sealing portion of the opening / closing tape remains in the opening of the bag. It is preferable to have a configuration that allows the opened bag to be sealed in a form that can be opened and closed by being affixed to the peeling surface of the opening tape.

  FIG. 21 is a schematic cross-sectional view showing an example of the opening / closing tape sticking bag of the present invention. In FIG. 21, 40 is a four-sided bag, 40a is a sealed end of the four-sided bag 40, 41 is an opening tape, 41a is a tape base material of the opening tape 41, and 41a1 is pre-formed on the tape base material 41a. Recesses, 41b is an adhesive layer of the opening tape 41, 41c is a release treatment layer of the opening tape 41, 42 is a cut-off processing portion, 43 is an opening and closing tape, 43a is a bag attaching portion of the opening and closing tape 43, 43a1 Is a tape base material of the bag attaching part 43a, 43a2 is an adhesive layer of the bag attaching part 43a, 43b is a bag sealing part of the opening and closing tape 43, 43b1 is a tape base part of the bag sealing part 43b, and 43b2 is a bag. An adhesive layer 43c of the sealing portion 43b is a knob. The four-sided bag 40 shown in FIG. 21 has an opening tape 41 attached to one side of the sealing end portion on one side and the opening tape 41 on the other side. A pressing part 42 is provided at a position corresponding to the position of the concave part 41a1 (front and back target position), and the surface side where the pressing part 42 is provided (that is, the opening tape 41 is provided). Opening and closing tape 43 is attached to the surface side that is not.

  As described above, when the surface of the opening bag to which the bag sealing portion of the opening / closing tape is attached is a release surface by the release treatment agent layer of the opening tape, the material of the bag (in particular, the material of the surface) Since it is not limited, the thing of various raw materials can be used as a bag. Therefore, in the present invention, the opening tape has a configuration in which an adhesive layer is formed on one surface of a tape base material in which a recess is formed in advance, and the other surface is a release surface. The opening tape is provided at least on the surface side where the opening / closing tape is not provided, and the opening portion is provided with the opening / closing tape after the bag is opened along the recess in the opening tape. It is possible to seal the opening bag in a form that can be opened and closed by folding the bag sealing portion of the opening and closing tape on the peeling surface of the opening tape portion remaining in the opening bag. It is preferable to provide in. At this time, the release surface of the opening tape is the release treatment agent layer surface, and the release tape is used as the release treatment agent so that the opening / closing tape is removed from the opening tape. Even if it is affixed to (the surface of the heavy release type release treatment agent layer) and the opening bag is sealed, it is possible to suppress or prevent peeling of the opening and closing tape during sealing of the opening bag, When the opening / closing tape is peeled off from the peeling surface of the opening tape to be opened, the opening / closing tape can be peeled off with an appropriate force.

  Further, in the present invention, in particular, the adhesive layer at the bag sealing portion of the opening / closing tape has a lower portion than the recess of the opening tape attached to the outer surface of the opening portion of the opening bag (opening tape). When sticking to the peel surface in the bag body sticking part), the wider peel surface in the bag body sticking part of the opening tape is stuck in a peelable form by the adhesive layer in the bag sealing part. Cheap. Therefore, the opening tape has a structure in which a release treatment layer is formed on the surface opposite to the adhesive layer in the tape substrate, and the bag is cut along the recess to open the tape. It is preferable that the concave portion is provided so that the portion of the opening tape remaining in the opening bag is larger than the cutting and separating portion when being made. Specifically, when the opening tape has a linear recess formed in the tape base in parallel with the longitudinal direction, the linear recess formed in the tape base in parallel with the longitudinal direction is It is preferable that the tape base material is formed at a position shifted to any end side in the width direction from the center portion in the width direction of the tape base material. At this time, as the opening tape, it is important that the opening of the opening tape on the side where the recess is shifted is adhered to the outer surface of the bag so that the end of the opening tape is located on the end of the bag. .

  Therefore, as shown in FIG. 22, the opening / closing tape sticking bag of the present invention has a tape opening tape in any of the width directions rather than the central portion in the width direction of the tape base material. A concave portion is formed in a straight line parallel to the longitudinal direction of the tape base material at a position shifted to the end side, and a release treatment layer is formed on the surface opposite to the adhesive layer in the tape base material. The opening of the bag is on the outer surface of the bag, with the end on the side where the recess in the opening tape of the bag is shifted and formed being located on the end side of the bag. (When the opening tape of the bag is opened by cutting the bag along the linear recess, the portion of the opening tape remaining in the opening bag is more, It is preferred that it is affixed to the outer surface of the bag.

  FIG. 22 is a schematic cross-sectional view showing an example of the opening / closing tape attaching bag of the present invention, and FIG. 22 (a) shows the bag with the opening tape and opening / closing tape attached, (B) shows the opening bag which opened the bag of (a), and FIG.22 (c) has shown the state which sealed the opening bag of (b) using the tape for opening and closing. 22 (a) to 22 (c), 44 is a four-sided bag, 44a is a sealed end of the four-sided bag 44, 45 is an opening tape, 45a is a tape base material of the opening tape 45, and 45a1 is a tape base. Recesses formed in advance in the material 45, 45b is an adhesive layer of the opening tape 45, 45c is a release treatment layer of the opening tape 45, 46 is a stamping portion, 47 is an opening and closing tape, 47a is an opening and closing tape 47 47a1 is a tape base material of the bag attaching part 47a, 47a2 is an adhesive layer of the bag attaching part 47a, 47b is a bag sealing part of the opening and closing tape 47, and 47b1 is a bag sealing part 47b. Tape base material, 47b2 is an adhesive layer of the bag sealing portion 47b, 47c is a knob, 48 is an opening bag obtained by cutting the four-sided bag 44 along the recess 45a1, and 48a is an opening portion of the opening bag 48. It is. A four-sided bag 44 shown in FIG. 22 (a) has an opening tape 45 attached to one side of the sealing end portion on one side and the opening on the other side. A stamping section 46 is provided at a position corresponding to the position of the concave portion 45a1 of the tape 45 (front and back target positions), and the surface side on which the stamping section 46 is provided (that is, the opening tape 45). The opening / closing tape 47 is attached to the surface side where no is provided. The opening tape 45 has a recess 45a1 that is linearly parallel to the longitudinal direction of the tape substrate 45a and shifted to any end side in the width direction from the central portion of the tape substrate 45a in the width direction. The opening tape 45 is formed such that the end portion of the opening tape on the side where the recess 45a1 is displaced is on the side of the sealing end portion 44a of the four-sided bag 44. The four-sided bag 44 is attached to one of the sealed end portions 44a. Therefore, as shown in FIG. 22 (b), when opened along the recess 45a1 (cut along line XY), the surface of the opening of the opening bag 48 has a recess. Will be left in a larger area than when it is formed at the center in the width direction of the opening tape, and as shown in FIG. The bag sealing portion 47b of the tape 47 can be easily adhered to the release treatment layer 45c in the portion of the opening tape 45 remaining on the surface of the opening portion of the opening bag 48.

  The bag with the opening tape and the opening / closing tape attached is arranged such that (i) the recess formed in advance in the tape base material of the opening tape is located at the site to be opened (the site to be opened). And a method of attaching an opening and closing tape to a predetermined portion of the outer surface of the bag, and (ii) a member (or bag member) for forming a bag (for example, a closed bag) In this case, the tape in the opening tape is closed to the portion corresponding to the portion to be opened when the bag is formed in the closed (sealed) member before manufacturing the closed bag. After attaching the opening tape so that the concave portion formed in advance on the base material is located, and attaching the opening and closing tape to the part that becomes a predetermined position when the bag is formed, How to form bags and these methods It can be produced by a variety of methods, such as viewing the combined.

(bag)
In the present invention, the bag to which the opening tape or the opening / closing tape is attached is not particularly limited, and may be a closed bag (closed bag) such as a sealed bag (sealed bag). A bag (open bag) having an opening such as a bag (open bag) in which the closed bag is opened may be used. In the present invention, at least a bag to which an opening tape is attached (for example, a bag to which only an opening tape is attached, a bag to which an opening tape and an opening / closing tape are attached) is preferably a closed bag. As a bag to which the opening tape is not attached (for example, a bag to which only the opening and closing tape is attached), either a closed bag or an open bag may be used.

  In addition, as a closure type | system | group bag, there is no opening part of a bag and what is necessary is just a bag which has a closed (sealed) form. Therefore, the closed bag may be a bag having air permeability or moisture permeability depending on the material or material of the bag, but is preferably a sealed bag (sealed bag). As the closed-type bag, for example, a bag that is closed by a known closing method (in particular, a bag that is sealed by a known sealing method) can be appropriately selected and used. More specifically, as shown in FIG. 23, the closed type bag is a so-called “four-side bag”, a so-called “three-side bag”, a so-called “pillow bag”, a so-called “standing pouch”, a so-called “gusset bag”. Or the like. The closing method (sealing method) in such a closed bag is not particularly limited, and examples thereof include a closing method by heat fusion and a closing method using an adhesive.

  FIG. 23 is a schematic view showing types of bags. In FIG. 23, (a) is a plan view showing a so-called “four-side bag”, (b) is a plan view showing a so-called “three-side bag”, and (c) is a so-called “pillow bag”. (D) is a perspective view showing a so-called “standing pouch”, and (e) is a perspective view showing a so-called “gusset bag”. 23, 49 is a four-sided bag, 49a is a sealed end of the four-sided bag 49, 50 is a three-sided bag, 50a is a folded part, 50b is a sealed end, 51 is a pillow bag, 51a is a folded part, 51b is a sealing end, 52 is a standing pouch, 52a is a sealing part, 53 is a gusset bag, and 53a is a sealing part.

  The four-sided bag is sealed by, for example, stacking two rectangular sheet-like base materials and bonding the end portions of the four sides by various bonding means (such as heat sealing). It can be produced by forming the end portion. Further, the three-sided bag is formed by folding one rectangular sheet-like base material in half at one central portion in a direction in which any one of the end portions is opposed to each other and folding it in half. It is possible to produce the sealing end portion by bonding the end portion side portion to the end portion by various bonding means (such as heat fusion). The pillow bag is formed by bending one rectangular sheet-like base material at two locations other than the central portion in the direction in which the end portions overlap with each other and any end portions face each other. It can be produced by bonding the end portion side by various bonding means (such as heat fusion) to form a sealed end portion. Standing pouches, gusset bags, and the like can also be produced by a known or conventional method using one or a plurality of sheet-like substrates.

  The material of the bag is not particularly limited, and may be any material such as paper (Western paper, Japanese paper, etc.), woven fabric, non-woven fabric, metal, resin (plastic). These materials may be used alone or in combination of two or more. Therefore, the closed bag may be made of various laminates such as a laminate of paper and a plastic film and a laminate of a metal foil and a plastic film. Moreover, various surface treatments (for example, peeling treatment, coating treatment, printing treatment, etc.) may be applied to the surface of the bag.

  The contents stored in the bag are not particularly limited. For example, when a four-sided bag is used as the bag, a poultice may be stored as the contents.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated more concretely, this invention is not limited only to an Example.

Example 1
Pressure is applied in the form of a touch roll using a cooling roll having a convex portion (width: 2 mm, height: 0.2 mm) formed by linearly forming a polypropylene resin in the circumferential direction of the outer peripheral surface by T-die molding. In addition, the film which has a recessed part was obtained by shape | molding. The film having the concave portion has a thickness of 100 μm, and the concave portion (width: 2 mm, depth: 50 μm) extends in a straight line in the longitudinal direction of the film on one side of the film in the center in the width direction. Is formed.

  A styrene-isoprene-styrene block copolymer pressure-sensitive adhesive (SIS pressure-sensitive adhesive) is applied to the surface on the flat side of the film having the recesses to form a pressure-sensitive adhesive layer (thickness: 30 μm). (On the surface of the film having recesses on the side where the recesses are formed), a silicone-based release treatment agent is applied to form a release treatment agent layer (thickness: 2 μm) as an opening tape. Adhesive tape [width: 20 mm, concave portion (width: 2 mm, depth: 50 μm) extending linearly in the longitudinal direction (MD direction) is formed at the center in the width direction (TD direction)] did. This adhesive tape may be referred to as “opening tape A”.

  A sample was prepared by attaching the opening tape A only to one surface (outer surface) of a planned opening portion of the four-sided bag (portion to open the closed bag). That is, the opening tape A was used as an opening tape for a four-sided bag, and was attached only to one side of the planned opening portion of the four-sided bag.

(Example 2)
In the same manner as in Example 1, an adhesive tape as an opening tape [width: 20 mm, a central portion in the width direction (TD direction) and a recess (width: 2 mm, depth extending linearly in the longitudinal direction (MD direction)] S: 50 μm) is formed]. This adhesive tape may be referred to as “opening tape B”.

  An opening tape B was affixed to the surface (outer surface) on both sides of the planned opening portion of the four-sided bag in a symmetrical manner on the front and back sides to prepare a sample. That is, using the opening tape B as an opening tape for a four-sided bag, the two sides of the planned opening portion of the four-sided bag were adhered so as to be symmetrical.

(Example 3)
The pressure is applied in the form of a touch roll using a cooling roll having a convex portion (width: 2 mm, height: 0.2 mm) formed in a wave shape in the circumferential direction of the outer peripheral surface by molding T-die from polypropylene resin. In addition, the film which has a recessed part was obtained by shape | molding. The film having the concave portion has a thickness of 100 μm, and the concave portion (width: 2 mm, depth: 50 μm) has a central portion in the width direction in a state of extending in a corrugated shape in the longitudinal direction of the film on one surface of the film. Is formed.

  An adhesive layer (thickness: 30 μm) is formed by applying a SIS-based pressure-sensitive adhesive on the plane side surface of the film having the concave portion, and the concave portion of the film having the concave portion is formed on the back surface. On the side surface), a silicone release agent is applied to form a release agent layer (thickness: 2 μm), and an adhesive tape [width: 20 mm, width direction (TD direction) as an opening tape ), A recess (width: 2 mm, depth: 50 μm) extending in a corrugated shape in the longitudinal direction (MD direction) is formed]. This adhesive tape may be referred to as “opening tape C”.

  A form in which the opening tape C is asymmetrical on the front and back surfaces (outer surfaces) of the planned opening portion of the four-sided bag (in addition, the front and back sides are symmetrical at the end in the width direction of the bag. Because the concave part is corrugated, some parts other than the edges are partially symmetrical on the front and back, but are basically asymmetric on the front and back). did. That is, the opening tape C was used as an opening tape for a four-sided bag, and was basically attached to both sides of the planned opening portion of the four-sided bag so as to be asymmetrical.

(Evaluation)
About the samples (20 bags each) obtained in Examples 1 to 3, by hand from the end in the width direction of the four-sided bag along the recess formed in the tape base material (polypropylene resin film) in the adhesive tape. Opening, performing an opening test, easiness of opening at that time (cutability), cutability at the planned opening site (openability of the bag), shape of the opening (aesthetic appearance of the opening surface), etc. evaluated. The evaluation results are shown in Table 1.

Example 4
As shown in FIGS. 24 (a) and 24 (b), a predetermined part (one end portion 54a to 19mm) on one side of a uniaxially stretched polypropylene film (OPP film; thickness: 40 μm, length: 45mm) 54 is used. After applying a styrene-isoprene-styrene block copolymer adhesive (SIS adhesive) to form a pressure-sensitive adhesive layer (thickness: 30 μm) 55, the pressure-sensitive adhesive layer 55 was formed. A silicone-based mold release treatment agent is applied to a predetermined portion of the same surface as the surface (a portion 25 mm from the other end 54b) to form a release treatment agent layer (thickness: 2 μm) 58, and A styrene-isoprene-styrene block copolymer adhesive (SIS system) is applied to a predetermined part on the other surface of the OPP film 54 (a part between a part 15 mm away from a part 5 mm away from the other end 54 b). After applying the adhesive, a pressure-sensitive adhesive layer (thickness: 30 μm) 57 is formed, and then on a predetermined part of the same surface as the surface on which the pressure-sensitive adhesive layer 57 is formed (from one end 54a to 20 mm). Is applied with a silicone-based mold release treatment agent to form a mold release treatment agent layer (thickness: 2 μm) 56, and is further adhered to the mold release treatment agent layer 56 along the X′-Y ′ line. The pressure-sensitive adhesive tape 59 was folded so as to come into contact with the agent layer 57 to produce a pressure-sensitive adhesive tape 59 having a laminated structure in which a bag attaching part 59a and a bag sealing part 59b were laminated as an opening / closing tape. This adhesive tape may be referred to as “opening / closing tape A”. In the adhesive tape 59 as the opening / closing tape A, the bag attaching part 59a is formed by the adhesive layer 55, the part on the end 54a side of the tape base material 54, and the release treatment layer 56. The bag sealing portion 59b is formed by the pressure-sensitive adhesive layer 57, the portion on the end portion 54b side of the tape base material 54, and the release treatment layer 58. At this time, the tape base material of the bag attaching part 59a and the tape base material of the bag sealing part 59b are formed as a single continuous tape base material as shown in FIG. Has a structure formed by being bent, and is joined at a bent portion when the one continuous tape base material is bent. In addition, the pressure-sensitive adhesive layer 57 of the bag sealing portion 59b is bent at the portion on the bent portion side (that is, the portion on the bonding portion side where the bag adhering portion 59a and the bag sealing portion 59b are bonded). It is the structure which is not formed with the width of 5 mm from the part. In the bag sealing part 59b, the tip part on the end part 59b side is not formed with an adhesive layer, and is a knob part 54b1.

  When the opening / closing tape A is folded by folding the opening in a bag having an opening (opening bag), the end portion or the portion on the end side when the opening is folded is attached to the bag on the opening / closing tape. A sample (opening bag with an open / close tape attached) was prepared by attaching to an outer surface of the opening bag that can be positioned between the wearing part and the bag sealing part.

  FIG. 24 is a schematic view showing a method for manufacturing the opening / closing tape in Example 4.

(Example 5)
The adhesive layer at the bag sealing part is folded when one continuous tape base material is formed into the tape base material at the bag sticking part and the tape base material at the bag sealing part. Example 4 with the exception that it was not formed on the folded part side part (that is, the joined part side part where the bag adhering part and the bag sealing part are joined) with a width of 2 mm from the folded part. Similarly, a pressure-sensitive adhesive tape (may be referred to as “opening / closing tape B”) having a laminated structure in which a bag attaching portion and a bag sealing portion are laminated as an opening / closing tape was produced. Also, except that the opening / closing tape B was used, the opening / closing tape was applied to the outer surface of the opening bag in the same manner as in Example 4, and a sample (opening bag having the opening / closing tape attached) was obtained. Produced.

(Example 6)
The adhesive layer at the bag sealing part is folded when one continuous tape base material is formed into the tape base material at the bag sticking part and the tape base material at the bag sealing part. Example 4 with the exception that it was not formed at a width of 10 mm from the bent portion at the bent portion side portion (that is, at the bonded portion side portion where the bag adhering portion and the bag sealing portion are bonded). Similarly, a pressure-sensitive adhesive tape (may be referred to as “opening / closing tape C”) having a laminated structure in which a bag attaching part and a bag sealing part are laminated as an opening / closing tape was produced. Further, except that the opening / closing tape C was used, the opening / closing tape was applied to the outer surface of the opening bag in the same manner as in Example 4, and a sample (opening bag having the opening / closing tape attached) was obtained. Produced.

(Comparative Example 1)
The adhesive layer at the bag sealing part is folded when one continuous tape base material is formed into the tape base material at the bag sticking part and the tape base material at the bag sealing part. In the same manner as in Example 4 except that the bent portion side portion (that is, the bonded portion side portion where the bag adhering portion and the bag sealing portion are bonded) is formed up to the bent portion. As an opening / closing tape, an adhesive tape having a laminated structure in which a bag attaching portion and a bag sealing portion are laminated (sometimes referred to as “opening / closing tape D”) was produced. Also, except that the opening / closing tape D was used, the opening / closing tape was applied to the outer surface of the opening bag in the same manner as in Example 4, and a sample (opening bag having the opening / closing tape attached) was obtained. Produced.

(Evaluation)
For the samples (20 bags each) obtained in Examples 4 to 6 and Comparative Example 1, the opening part of the opening bag was positioned between the bag sticking part and the bag sealing part in the opening and closing tape, The bag sealing part was stuck on the surface of folding and the opening part, the opening bag was sealed, and the workability | operativity and sealing performance in the case of this sealing were evaluated. The evaluation results are shown in Table 2.

(Example 7)
The opening tape A produced in the same manner as in Example 1 was used as the opening tape, and the opening / closing tape A produced in the same manner as in Example 4 was used as the opening / closing tape.

  Then, the opening tape A is affixed to the surface (outer surface) on one side of the planned opening portion of the four-sided bag (the portion to be opened of the four-sided bag), and the opening tape A is attached to the other surface. A pressing part is provided at a position corresponding to the position of the concave part (position to be a front and back object), and the opening / closing tape A is provided on the surface on which the pressing part is formed. When the opening in the opened bag (opening bag) is folded and folded along the opening, the end when the opening is folded or the portion on the end side is A sample (closed bag with an opening tape and an opening / closing tape attached) is applied to the outer surface of the opening bag that can be positioned between the bag attaching portion and the bag sealing portion. Produced.

(Example 8)
Except that the opening tape A was not attached to the surface (outer surface) on both sides of the planned opening part of the four-sided bag (the part to be opened of the four-sided bag), and the pressing part was not provided. In the same manner as in No. 7, the opening tape and the opening / closing tape are affixed to the respective predetermined portions of the outer surface of the opening bag, and a sample (a closed bag in which the opening tape and the opening / closing tape are attached) is obtained. Produced.

Example 9
Pressure is applied in the form of a touch roll using a cooling roll having a convex portion (width: 2 mm, height: 0.2 mm) formed by linearly forming a polypropylene resin in the circumferential direction of the outer peripheral surface by T-die molding. In addition, a film having a recess (width: 20 mm) was obtained by molding. The film having the concave portion has a thickness of 100 μm, and the concave portion (width: 2 mm, depth: 50 μm) extends in a straight line in the longitudinal direction of the film on one side of the film in the center in the width direction. It is formed at a position (a position 5 mm from the end in the width direction) that is shifted to any end side in the width direction.

  A styrene-isoprene-styrene block copolymer pressure-sensitive adhesive (SIS pressure-sensitive adhesive) is applied to the surface on the flat side of the film having the recesses to form a pressure-sensitive adhesive layer (thickness: 30 μm). (On the surface of the film having recesses on the side where the recesses are formed), a silicone-based release treatment agent is applied to form a release treatment agent layer (thickness: 2 μm) as an opening tape. Adhesive tape [width: 20 mm, at a position 5 mm from the end in the width direction (TD direction) (at a position shifted to any end in the width direction from the center), in the longitudinal direction (MD direction) A linearly extending recess (width: 2 mm, depth: 50 μm) was formed]. This adhesive tape may be referred to as “opening tape D”.

  Except that this opening tape D was used, in the same manner as in Example 7, the opening tape and the opening / closing tape were affixed to the respective predetermined portions of the outer surface of the opening bag, and samples (opening tape and A closed bag with an open / close tape attached).

(Comparative Example 2)
A commercially available belt-shaped perforated bag with an uneven zipper was used.

(Evaluation)
For the samples (20 bags each) obtained in Examples 7 to 9 and Comparative Example 2, from the end in the width direction of the bag along the recess formed in the tape base material (polypropylene resin film) in the adhesive tape. Open by hand, open test, ease of opening at that time (cutability), cutability at the planned opening (bag opening), shape of the opening (aesthetics of the opening surface) Etc. were evaluated. In addition, after opening, each was sealed in a form that can be opened and closed by a predetermined method, and opened and opened and closed, and an opening and closing test was performed to evaluate the opening and closing workability at the time of opening and closing. The evaluation results are shown in Table 3.

It is a schematic sectional drawing which shows an example of the tape for opening the bag of this invention. It is a schematic perspective view which shows partially an example of the recessed part previously formed in the tape base material in this invention. It is a schematic sectional drawing which shows an example of the recessed part currently formed in the tape base material in this invention previously. It is a schematic sectional drawing which shows an example of the tape for opening and closing of the bag of this invention. It is a schematic sectional drawing which shows the other example of the tape for opening and closing of the bag of this invention. It is a schematic sectional drawing which shows the example of the tape for opening / closing of this invention. It is a schematic plan view which shows an example of the bag with which the tape for opening was stuck. It is a schematic plan view which shows the other example of the bag with which the tape for opening was stuck. It is a schematic plan view which shows the other example of the bag with which the tape for opening was stuck. It is a schematic sectional drawing which shows the example of the bag with which the tape for opening was stuck. It is the schematic which shows the example of the bag by which the tape for opening was stuck on one side, and the press cut process was given to the other side. It is the schematic which shows the example of the 4-way bag with which the tape for opening was stuck. It is the schematic which shows the example of the 4-way bag with which the tape for opening was stuck. It is a schematic plan view which shows the example of the bag in which the tape for opening was stuck, and the cut | interruption line for a cutting start was formed. It is a schematic plan view which shows the example of the bag with which the tape for opening was stuck. It is a schematic plan view which shows an example of the bag with which the tape for opening and closing was stuck. It is a schematic sectional drawing which shows the example of the state which has sealed the opening bag shown by Fig.16 (a) with the tape for opening and closing, Fig.17 (a) is a top view, FIG.17 (b) is sectional drawing. . It is a schematic plan view which shows an example of the bag with which the tape for opening and the tape for opening and closing were stuck. It is the schematic which shows the example of the state which opened the bag with which the tape for opening and the tape for opening and closing was opened using the recessed part of the tape for opening, FIG.19 (a) is a top view, FIG.19 (b) ) Is a cross-sectional view. It is the schematic which shows the example of the state sealed using the opening-and-closing tape, after opening the bag with which the opening tape and the opening-and-closing tape were stuck, FIG.20 (a) is a top view, figure 20 (b) is a sectional view. It is a schematic sectional drawing which shows the example of the tape sticking bag for opening and opening / closing of this invention. FIG. 22 is a schematic cross-sectional view showing an example of an opening / opening / opening / closing tape sticking bag of the present invention, in which FIG. 22 (a) shows a bag to which an opening tape and an opening / closing tape are attached, and FIG. FIG. 22 (c) shows a state in which the opening bag of (a) is opened by using an opening / closing tape. It is the schematic which shows the kind of bag. In Example 4, it is the schematic which shows the manufacturing method of the tape for opening / closing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening tape 1a Tape base material 1a1 The recessed part previously formed in the tape base material 1b Adhesive layer 1c Mold release processing agent layer
2a ~ 2d tape substrate
2a1 to 2d1 Recesses in tape base materials 2a to 2d
3a-3c tape base material
3a1 to 3c1 Recesses in tape base materials 3a to 3c 4 Opening and closing tape 4a Bag sticking part in opening and closing tape 4 4a1 Tape base material in bag sticking part 4a 4a2 Adhesive layer in bag sticking part 4a 4a3 Bag sticking part Release agent layer in 4a 4b Bag sealing part in opening and closing tape 4 4b1 Tape base material in bag sealing part 4b 4b2 Adhesive layer in bag sealing part 4b 4b3 Release treatment agent layer in bag sealing part 4b 5a Open end part (free end part) of bag sticking part 4a or tape base material 4a1
5b Junction part of bag sticking part 4a and bag sealing part 4b 5c Open end part (free end part) of bag sealing part 4b or tape base material 4b1
6 Pick part A Adhesive part where bag adhering part 4a and bag sealing part 4b are detachably bonded B Non-adhering part where bag adhering part 4a and bag sealing part 4b are not attached 10 4 sides 10a1 One short side sealed end 10a2 The other short side sealed end 10a3 One long side sealed end 10a4 The other long side sealed Stop end portion 11 Opening tape 11a Recessed portion formed on tape base material in opening tape 11 17 Four-sided bag 17a Sealing end portion 17a1 Upper sealing end portion 17a2 Lower sealing end portion 17a3 Left portion sealing End portion 17a4 Sealing end portion on the right side 18 Opening tape 18a Tape base material in the opening tape 18 18a1 Recessed portion formed in the tape base material 18a 18b Adhesive layer in the opening tape 18 19 Pressing part 26 4 Recess 28 cut opportunity for cut formed in the tape base material in the bag 26a sealed end portion 27 opening tape 27a unsealing tape 27
31a, 31b Open bag,
31a1, 31b1 Openings in open bags (31a, 31b)
31a2, 31b2 Sealed end of open bag (31a, 31b)
32a, 32b Open / close tape 33 Four-sided bag 33a Four-sided bag 33 Surrounding sealing end 33a1 One short side sealing end 33a2 The other short side sealing end 33a3 One long side sealing End 33a4 Sealing end of the other long side 34 Opening tape 34a Recess formed in tape base material in opening tape 34 Opening / closing tape 35a Bag attaching part 35a1 Opening tape 35 attaching part 35a1 Tape base material 35a2 Adhesive layer 35b at the bag adhering portion 35a Bag sealing portion 35b1 of the opening / closing tape 35 Tape base material 35b2 at the bag sealing portion 35b Adhesive layer 35c at the bag sealing portion 35b Picking part 36 Opening tape 36a Recessed part formed in tape base material in opening tape 36 37 Opening and closing tape 38 Four-sided bag 33 is opened Opening bag 38a Opening portion 38b in opening bag 38 Bending portion when opening portion 38a of opening bag 38 is bent 39 Part of opening tape 34 attached to opening bag 38 39a On one surface of opening bag 38 Adhering part 39a1 of the opening tape bag main body adhering part 39a2 The tape base material 39a3 of the opening tape bag main body adhering part 39a of the opening tape bag main body adhering part 39a Adhesive layer 39a4 Release processing layer 39b of the opening tape bag main body attaching portion 39a Opening tape bag main body attaching portion 39b1 attached to the other surface of the opening bag 38 39b1 Opening tape bag main body attaching portion 39b Recessed part 39b2 Tape base material 39b3 for opening tape bag main body attaching part 39b Adhesive layer 39b4 for opening tape bag main body attaching part 39b Releasably treated layer 9b

Claims (17)

A bag opening and closing tape that can be sealed by holding the bag in a folded state by being attached to the outer surface of the bag, and for attaching the bag to the outer surface of the bag. It has a structure in which a wearing part and a bag sealing part for holding the opening in a folded state are laminated, and has the following structures (a) to (e) Characteristic bag opening and closing tape.
(A) The structure which the tape base material which comprises a bag sticking site | part, and the tape base material which comprises a bag sealing site | part are joined by one edge part side (b) The bag sticking site | part is a tape base The structure which has an adhesive layer for making it stick on the outer surface of a bag on one surface of a material, and has a mold release processing agent layer on the other surface (c) The bag sealing part is one side of a tape base material (D) A mold release treatment agent at the bag attachment site having a pressure-sensitive adhesive layer for holding the opening in a partially folded state and a mold release treatment agent layer on the other surface. A structure in which the bag-attached part and the bag-sealed part are laminated in a form in which the surface on the layer side and the surface on the adhesive-layer side of the bag-sealed part are in contact with each other. The structure which is not formed in the site | part of the junction part side joined to the bag sticking site | part The bag according to claim 1, wherein a pressure-sensitive adhesive layer is not formed at least in a region within a range of 1 mm from a joint portion joined to the bag sticking site on the surface of the bag sealing site on the bag sticking site side. Opening and closing tape. The tape base material constituting the bag adhering site and the tape base material constituting the bag sealing site have a structure formed by bending one continuous tape base material. The bag opening and closing tape according to claim 1 or 2. The bag opening / closing tape according to any one of claims 1 to 3, wherein the bag sealing portion has a knob at a portion on the end side that is not joined to the bag sticking portion. It is a bag that can be held and sealed in a state in which the opening is folded, and the opening / closing tape for the bag according to any one of claims 1 to 4 is attached to an outer surface. A bag characterized. When the opening / closing tape of the bag folds the opening part of the bag, the end part or the part on the end side when the opening part is folded is positioned between the bag attaching part and the bag sealing part. The bag according to claim 5, wherein the bag is adhered to the outer surface of the bag so that the open end portion side of the bag sealing portion is located on the opening side of the bag. The bag according to claim 5 or 6, wherein the opening / closing tape of the bag is attached at least partially in the width direction at any end of the bag. The length in the direction parallel to the joint where the bag sealing part and the bag attaching part of the bag opening and closing tape are joined is the length of the end of the bag on the side where the bag opening and closing tape is attached. The bag according to claim 7, which has a length of 3 to 100% of the length. The bag according to any one of claims 5 to 8, wherein the bag is a four-sided bag, a three-sided bag, a pillow bag, a standing pouch, or a gusset bag. The bag is a rectangular four-sided bag, and the opening / closing tape of the bag has a sealing end of two long sides in a four-side sealing end where the inner surfaces of the rectangular four-sided bag are bonded together. The bag according to claim 9, wherein the bag is attached to the sealed end portion side of one long side. When opening the bag, the bag can be opened with a predetermined opening shape, and after opening, the opening of the opened bag can be held in a folded state and sealed. A bag opening tape capable of opening a bag in a predetermined opening shape by adhering to the outer surface of the bag and having at least a tape substrate and an adhesive layer. In addition, as the tape base material, a bag opening tape in which a tape base material having a concave portion formed in a linear shape or a curved shape in the longitudinal direction of the opening tape in advance is attached. In addition, a bag characterized in that the bag opening and closing tape according to any one of claims 1 to 4 is attached to another part of the outer surface. In unsealing tape of the bag, thickness at the concave portion of the tape base material is not more than 95% of the thickness of the portion where the depressed portion is not formed, it claims 11 bags according at and 5μm or more. The bag according to claim 11 or 12, wherein, in the opening tape for the bag, the width of the concave portion of the tape base material is 5 mm or less. In unsealing tape of the bag, one of the tape base material surface side only a concave portion formed in advance, and the tape base material of claim 11 to 13 in which the plane of plane-side pressure-sensitive adhesive layer is formed of The bag according to any one of the items. The bag according to any one of claims 11 to 14 , wherein a release treatment layer is formed on a surface of the tape base material opposite to the pressure-sensitive adhesive layer in the opening tape of the bag. The opening tape of the bag is provided at least on the surface side where the opening / closing tape of the bag is not provided, and after opening the bag, the opening / closing tape of the opening bag is provided with the opening / closing tape of the bag. In a form that can be opened and closed by folding the bag side and pasting the bag sealing part of the opening and closing tape on the release surface of the release tape layer remaining in the opening of the bag The bag according to claim 15, which can be sealed. The opening tape of the bag is linearly formed in a straight line parallel to the longitudinal direction of the tape base material at a position shifted to any end side in the width direction from the central part of the tape base material in the width direction. And the end of the side which has the structure by which the mold release process layer was formed in the surface on the opposite side with respect to the adhesive layer in a tape base material, and the recessed part in the tape for opening of a bag shifted | deviated The bag according to any one of claims 11 to 16 , wherein the opening portion of the bag is attached to the outer surface of the bag in a form in which the portion is located on the end side of the bag.

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