JP4654697B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag having a function of providing a content outlet on one side of the front or back of a bag body after packaging contents such as food and non-food.

In recent years, packaging bags for packaging contents such as foods and non-foods have been used. Packing bags with the function of easily opening the contents on the front or back side of the bag body after filling and sealing the contents Has been. Examples of the packaging bag having the above function include packaging bags such as wet tissue and automobile cleaning sheets, and the structure of the packaging bag is to cut the front side surface of the bag body portion into a predetermined shape and collect the contents. An outlet is provided and a label having an adhesive layer is affixed on one side so as to cover the outlet. When taking out a part of the contents from the inside, the label is peeled off and taken out. (See, for example, Patent Document 1) . However, the packaging bag having the structure described above uses secondary materials such as labels, which increases costs, and the contents can easily be placed on the front or back surface of the bag body without using such secondary materials. There has been a demand for a packaging bag having a function of providing an outlet.

JP 7-89556 A

  An object of the present invention is to provide a packaging bag in which a content outlet can be easily provided on one side of the front or back of a bag body after filling and sealing various contents.

The invention according to claim 1 of the present invention is a portion comprising a paper layer provided with a linear perforation line on one side of a base material layer, a dot-like peeling varnish part, and a solid peeling varnish part having a predetermined area in one place. A half-cut part with a predetermined shape cut from the sealant layer to the middle of the paper layer is provided in the part having the half-tone peeling varnish part of the laminate in which the peeling varnish layer, the adhesive resin layer, the gas barrier layer, and the sealant layer are sequentially laminated. A bottom sealing portion is provided on one side of the bag body portion, and an opening is provided on the opposite side, using a laminated material for the front surface and a backside laminated material formed by laminating a gas barrier layer and a sealant layer on at least one side of the base material layer A side seal part is provided on both sides, and the edge of one side seal part is provided with a cut in a state in which the front laminate material and the back laminate material are penetrated, and the perforation line is Opening at a position closer to the opening than the center of the main unit It has a state in which it extends in parallel from one side seal part to the end of the other side seal part, and has a halftone dot varnish part of the partial peeling varnish layer between the perforation line and the opening and a solid peeling. It has a varnish part at a position on the opening side adjacent to the perforation line of one side seal part, has the half-cut part between the perforation line and the opening part, and the bottom cut of the solid peeling varnish part It is a packaging bag which consists of what has in the lower end of the part side.

  The packaging bag of the present invention is a partially peeled varnish layer comprising a paper layer provided with a linear perforation line on one side of a base material layer, a dot-like peeled varnish portion and a solid peeled varnish portion having a predetermined area in one place, Laminate for front, in which a half-cut part with a predetermined shape cut from the sealant layer to the middle of the paper layer is provided in the part having the half-tone peeled varnish part of the laminate in which the adhesive resin layer, gas barrier layer, and sealant layer are sequentially laminated. Using the material and at least a backing laminate material that is a laminate of a gas barrier layer and a sealant layer on one side of the base material layer, a bottom seal is provided on one side of the bag body, an opening is provided on the opposite side, Provided with a side seal portion, and an edge of one side seal portion is provided with a cut in a state in which the front laminated material and the back laminated material are penetrated, and the perforation line is formed at the center of the bag main body portion. One side parallel to the opening at a position closer to the opening It has a state extending from the side seal part to the end of the other side seal part, and has a halftone dot varnish part of the partial peeling varnish layer between the perforation line and the opening part, and one solid peeling varnish part. The side seal portion of the side seal portion has a position on the opening side adjacent to the perforation line, the half cut portion is between the perforation line and the opening portion, and the cut is formed at the bottom end of the solid peeling varnish portion on the bottom seal portion side. Therefore, after filling and sealing the contents, the base layer, adhesive layer and paper layer of the surface laminate material are joined together from the notch located in the solid release varnish portion of the surface laminate material. It can be easily peeled off along the perforation line.If the half-cut part of the surface laminate material after the peeling is cut to provide a content outlet, the content can be removed from there. It can be taken out. Further, since the paper layer is eliminated at the take-out portion, the take-out port can be sealed by repeatedly bending the remaining front and back laminated materials.

The packaging bag of this invention is demonstrated below along embodiment. Fig.3 (a) is a schematic diagram which shows one Embodiment of the laminated material for table | surfaces used for the packaging bag of this invention, and the laminated material for table | surfaces (10) is one side of a elongate base material layer (11). A paper layer (13) provided with a linear perforation line (19) extending from one end to the other end in the width direction at right angles to the flow direction is laminated via an adhesive layer (12). On the entire surface in the width direction adjacent to the perforation line (19) of (13), a partially peeled varnish layer (14) comprising a dot-like peeled varnish portion (14a) and a solid peeled varnish portion (14b) having a predetermined area. ), And an adhesive resin layer (15), a gas barrier layer (16), an adhesive layer (17), and a sealant layer (18) are further laminated thereon, and a dot-like peeling varnish portion (14a) is further provided. Predetermined shape in a state of being cut through the sealant layer (18) through the middle of the paper layer (13) at a predetermined position (B) is a cross-sectional view taken along the line AA ′ of (a), and shows the surface of the paper layer (13) on the side of the adhesive resin layer (15). Has a dot-like peeled varnish portion (14a) and a solid-like peeled varnish portion (14b), and (c) is a cross-sectional view taken along the line BB 'of (a), showing the adhesion of the paper layer (13). Half-cut portion having a predetermined shape in a state of having a halftone dot-like peeled varnish portion (14a) on the entire surface of the conductive resin layer (15) and being cut through the sealant layer (18) from the inside of the paper layer (13) (20). Fig.4 (a) is a sectional side view which shows one Embodiment of the laminated material for backs used for the packaging bag of this invention, and the laminated material for backs (30) is an elongate base material layer (31). The adhesive layer (32), the gas barrier layer (36), the adhesive layer (37), and the sealant layer (38) are sequentially laminated on one side, and (b) is another embodiment of the back laminated material. FIG. 5 is a side sectional view showing a back laminated material (30 ′) comprising an adhesive layer (32), a paper layer (33), and an adhesive resin layer (35) on one side of a long base layer (31). The gas barrier layer (36), the adhesive layer (37), and the sealant layer (38) are sequentially laminated.

  A sealing layer may be laminated between the paper layer (13) and the partially peeled varnish layer (14) of the front laminate material (10).

  The base layer (11, 31) is composed of a single layer or a multilayer film. Examples of the film used include a biaxially stretched polypropylene film having a thickness of 20 to 30 μm and a biaxial layer having a thickness of 15 to 25 μm. A stretched nylon film, a biaxially stretched polyester film having a thickness of 6 to 12 μm, and a biaxially stretched polyester film having a thickness of 6 to 12 μm were laminated with a vapor-deposited thin film layer of inorganic oxide such as silicon oxide or aluminum oxide and a gas barrier coating layer. A gas barrier laminate film or the like can be used.

The paper layer (13, 33) is made of paper having a basis weight of 50 to 100 g / m ² , and the paper layer (13) is a straight line extending from one end to the other end in the width direction at right angles to the flow direction. Perforated lines (19) are provided at predetermined intervals. The shape of the perforation line (19) is not particularly limited, and for example, a C-shaped perforation line is used.

  The partial release varnish layer (14) has a dot-like release varnish portion (14a) and a solid release varnish portion (14b), and is publicly known using a coating agent composed mainly of wax. In the gravure method, the paper layer adjacent to the perforation line (19) provided on the long paper layer (13) is repeatedly applied with a predetermined width and laminated at a predetermined interval. When the solid peeling varnish portion (14b) is heat-sealed at the time of bag making, the wax component melts and spreads over the entire surface so that the adhesive strength is extremely lowered, and the layers on both sides of the portion can be easily separated. become.

  Examples of the resin of the adhesive resin layer (15, 35) include low-density polyethylene resin, ethylene / ethyl acrylate copolymer resin (EEA resin), ethylene / acrylic acid copolymer resin (EAA resin), and ethylene / methacrylic acid. A resin such as a copolymer resin (EMAA resin), an ethylene / methyl methacrylate copolymer resin (EMMA resin), or an ionomer resin can be used, and the lamination method is performed by a melt extrusion method.

  For the gas barrier layers (16, 36), an aluminum foil having a thickness of 6 to 30 μm is usually used, but a stretched film having gas barrier properties may be used.

  The sealant layer (18, 38) is made of a polyolefin resin or a polyolefin resin film. Examples of the resin include a low density polyethylene resin, a linear low density polyethylene resin, a medium density polyethylene resin, and a high density. Ethylene resins such as polyethylene resin, ethylene / α-olefin copolymer resin, homopolypropylene resin, propylene / ethylene random copolymer resin, propylene / ethylene block copolymer resin, polypropylene / α-olefin copolymer resin Propylene-based resins and the like can be used, and lamination is performed by a known melt extrusion method or dry lamination method. The thickness is appropriately selected.

Generally, a polyurethane-based adhesive is used for the adhesive layer (12, 17, 32, 37). Usually, a two-component type is used in which a main component having a hydroxyl group and a curing agent having an isocyanate group are mixed in two components. The lamination is performed by a known gravure coating method. The coating amount is preferably 1 to 5 g / m ² (dry state).

FIG. 1 is a front view showing an embodiment of the packaging bag of the present invention. The packaging bag (1) is composed of the front laminated material (10) and the back laminated material (30). 2) A self-supporting bottom seal (3) on one side, an opening (4) on the opposite side, side seals (5, 6) on both sides, In the state extending from one side seal part (5) to the end of the other side seal part (6) parallel to the opening part (4) at a position on the opening part (4) side from the center of (2) It has a perforation line (19) of the paper layer (13) of the laminate material (10), and is a net provided in the front laminate material (10) between the perforation line (19) and the opening (4). has punctiform peeling varnish portion (14a) and made of solid shaped peeling varnish portion (14b) partially stripping varnish layer (14) and Hafuka Tsu preparative section (20) Furthermore, it has the notch (7) in the state which penetrated the laminated material for table | surfaces (10) and the laminated material for back surfaces (30) in the lower end part by the side of the bottom seal part (3) of the solid peeling varnish part (14b). ing.

  The bottom seal portion (3) may have a form that does not have self-supporting properties.

  Further, the structure of the packaging bag (1) will be described with reference to FIGS. 2 (a) to 2 (d). FIG. 2 (a) is a cross-sectional view taken along the line AA ′ of FIG. 10) and a laminated material for back (30), having side seal portions (5, 6) and a space (40), the surface of the paper layer (13) on the adhesive resin layer (15) side It has a halftone dot varnish part (14a) as a whole, and (b) is a cross-sectional view taken along the line BB 'of FIG. 1, and similarly, an adhesive resin layer (15) of the paper layer (13). A half-cut part (20) cut through the sealant layer (18) and into the paper layer (13), and having a halftone dot-like varnish part (14a) on the entire surface on the side, ( c) is a cross-sectional view taken along the line C-C 'of FIG. 1, and the surface of the paper layer (13) on the side of the adhesive resin layer (15) has a solid peel-off part on the side seal part (5). And (d) is a cross-sectional view taken along the line DD ′ of FIG. 1 and shows the adhesion of the paper layer (13). The surface on the side of the conductive resin layer (15) does not have the dot-like peeling varnish portion (14a) and the solid peeling varnish portion (14b).

  FIG. 5 is an explanatory view showing an example of use of the packaging bag of the present invention. After filling the packaging bag with contents (not shown), the opening (4) is sealed to provide a sealing portion (8). With the pulling force (P), the paper layer (13), the adhesive layer (12) and the base material layer (11) of the front laminated material are joined together along the perforation line from the notch (7). After peeling off, each remaining layer of the surface laminate material is cut from the half-cut portion (20) to provide a content outlet (50), from which the content is taken out. After a part of the contents is taken out, the remaining front laminate material and back laminate material can be folded back together to seal the outlet (50). As shown in FIG. 5, the layer structure of the side seal portion (5) after the paper layer (13), the adhesive layer (12) and the base material layer (11) of the front laminated material are peeled off together. The base layer (31), the adhesive layer (32), the gas barrier layer (36), the adhesive layer (37), the sealant layer (38), the sealant layer (18), the adhesive layer (17), The gas barrier layer (16) and the adhesive resin layer (15) are laminated. The surface of the adhesive resin layer (15) has a dot-like release varnish portion (14a) and a solid release varnish portion (14b). ing.

  As described above, the packaging bag according to the present invention partially peels off the laminated material for the surface, and after taking out a part of the content by providing the content outlet, the outlet is easily sealed. For example, it is optimal as a bag for packaging contents such as a wet tissue, a cosmetic liquid sheet, and an automobile cleaning sheet. Of course, food can also be packaged.

It is a front view which shows one Embodiment of the packaging bag of this invention. 1A is a cross-sectional view taken along line AA ′ in FIG. 1, FIG. 1B is a cross-sectional view taken along line BB ′ in FIG. 1, and FIG. 2C is a cross-sectional view taken along line CC ′ in FIG. (D) is the DD 'sectional view taken on the line of FIG. (A) is a schematic diagram which shows one Embodiment of the laminated material for table | surfaces used for the packaging bag of this invention, (b) is the sectional view on the AA 'line of (a), (c) is ( It is BB 'sectional view taken on the line of a). (A) is a sectional side view which shows one Embodiment of the laminated material for backs used for the packaging bag of this invention, (b) is a sectional side view which shows other embodiment of the laminated material for backs. It is explanatory drawing which shows one use example of the packaging bag of this invention.

DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2 ... Bag main-body part 3 ... Bottom seal part 4 ... Opening part 5, 6 ... Side seal part 7 ... Notch 8 ... Seal part 10 ... Laminating material 11 ... Base material layer 12, 17 ... Adhesive layer DESCRIPTION OF SYMBOLS 13 ... Paper layer 14 ... Partial peeling varnish layer 14a ... Dot-like peeling varnish part 14b ... Solid peeling varnish part 15 ... Adhesive resin layer 16 ... Gas barrier layer 18 ... Sealant layer 19 ... Perforation line 20 ... Half cut part 30, 30 '... Backing layer 31 ... Base material layers 32, 37 ... Adhesive layer 33 ... Paper layer 35 ... Adhesive resin layer 36 ... Gas barrier layer 38 ... Sealant layer 40 ... Space 50 ... Outlet P ... Tensile force

Claims (1)

  A paper layer provided with a linear perforation line on one side of the base material layer, a partially peeled varnish layer consisting of a dot-like peeled varnish part and a solid peeled varnish part of a predetermined area at one location, an adhesive resin layer, a gas barrier layer A laminated material for a surface, in which a half-cut portion having a predetermined shape cut from a sealant layer to a paper layer is provided at a portion having a halftone dot varnish portion of a laminate obtained by sequentially laminating a sealant layer, and at least a base material Using a laminated material for backing formed by laminating a gas barrier layer and a sealant layer on one side of the layer, a bottom seal part is provided on one side of the bag body, an opening is provided on the opposite side, and side seal parts are provided on both sides. It is a packaging bag provided with a cut in a state in which the front laminated material and the back laminated material are penetrated at the edge of one side seal part, and the perforation line is located at a position closer to the opening side than the center of the bag main body part. Is one side seal parallel to the opening? It has a state where it extends to the end of the other side seal part, and has a halftone dot release varnish part of the partial release varnish layer between the perforation line and the opening and a solid release varnish part on one side seal part From the position on the opening side adjacent to the perforation line, having the half-cut part between the perforation line and the opening, and having the cut at the lower end of the solid peeling varnish part on the bottom seal part side. A packaging bag characterized by

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