JP2006219165A - Packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag which allows the formation of a content outlet on the front side of the bag after putting various contents in the bag and sealing the bag. <P>SOLUTION: A back side laminated material folded into a gusset shape and a front side laminated material are used to make the packaging bag. The front side laminated material is a lamination formed by overlaying a paper layer having perforated lines, a partially peelable varnish layer, an adhesive resin layer, a gas barrier layer, and a sealant layer on one face of a base layer, the lamination having a half-cut part A and a half-cut part B formed on a part where the partially peelable varnish layer is present. An opening is formed on one side of the bag, and a sealing part is formed on the opposite side, where two incisions are formed at given positions on the sealing part. Side sealing parts are formed on both sides of the bag. The perforated lines are formed to extend from the front ends of the two incisions to the opening in parallel with the side sealing parts. The partially peelable varnish layer occupies the whole area between the perforated lines. The half-cut part A is formed at a given position on the part where the partially peelable varnish layer occupies, and the half-cut part B is extended from the front end of one incision to that of the other incision. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a packaging bag having a function of providing an outlet for contents other than the outer periphery of the bag after packaging the 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 tissues and automobile cleaning sheets. The structure of these packaging bags is to cut the front side surface of the bag body portion into a predetermined shape and take out 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. ing. 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.

  The subject of this invention is providing the packaging bag which can provide the take-out port of the content in the surface used as the front side of a bag after filling and sealing various contents.

  The invention according to claim 1 of the present invention comprises a laminate in which at least a sealant layer is laminated on one surface of a base material layer, a back laminated material that is gusset-folded, and a straight line on one surface of the base material layer. A paper layer having a perforated line, a dot-like partially peeled varnish layer, an adhesive resin layer, a gas barrier layer, and a sealant layer are sequentially laminated from the sealant layer to the paper layer. A half-cut portion A having a predetermined shape and a straight half-cut portion B cut into two are stacked, and a flat surface laminate material is laminated so that the sealant layers face each other, and an opening is formed on one side. A packaging bag provided with a seal part on the opposite side of the opening, two cuts at predetermined positions on the periphery of the seal part, and side seal parts on both sides, the linear perforation line Two breaks It has a state in which it extends in parallel to the side seal part from the tip to the opening part, has the partial peeling varnish layer over the entire surface between two perforations, and has the half cut part A in the part having the partial peeling varnish layer. A packaging bag having a predetermined position and having the half-cut portion B in a state extending from the tip on the opening side of one cut to the tip on the opening side of the other cut. is there.

The packaging bag of the present invention comprises a laminate in which at least a sealant layer is laminated on one surface of a base material layer, a back laminated material that is gusset-folded, and a linear perforation line on one surface of the base material layer A paper layer having a part, a halftone dot partly peeled varnish layer, an adhesive resin layer, a gas barrier layer, and a sealant layer laminated in order to cut into a part having a partly peeled varnish layer from the sealant layer into the paper layer A half-cut portion A having a shape and a half-cut portion B having a straight shape, and a flat laminated material for a front surface are overlapped so that the sealant layers face each other, and an opening is provided on one side. A packaging bag provided with a seal portion on the opposite side, two cuts at predetermined positions on the periphery of the seal portion, and side seal portions on both sides, wherein the linear perforation lines are provided at two locations. From the tip of the cut A part extending in parallel with the side seal part to each opening, having the partial peeling varnish layer over the entire surface between two perforations, and having the half-cut part A in a part having the partial peeling varnish layer Since the half cut portion B is in a state extending from the tip on the opening side of one cut to the tip on the opening side of the other cut, the half cut portion B and Peel the base layer, adhesive layer and paper layer of the surface laminate material in the part surrounded by the cuts at the two places together, and then peel along the perforation line, and the remaining half of the surface laminate material The portion of the cut portion A is cut to provide an outlet, and the contents can be taken out from the outlet.

  The packaging bag of this invention is demonstrated below along embodiment. Fig.2 (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). In addition, a paper layer (13) in which linear perforation lines (19, 20) extending from one end to the other end in the width direction perpendicular to the flow direction are repeatedly provided at a predetermined interval is laminated via an adhesive layer (12). A halftone dot-like peeled varnish layer (14) is laminated on the entire surface in the width direction between the perforation lines (19, 20) of the paper layer (13), and an adhesive resin layer (15), a gas barrier is formed thereon. A layer (16), an adhesive layer (17), and a sealant layer (18) are laminated, and further, a paper layer (13) is formed from the sealant layer (18) at a predetermined position having a dot-like partially peeled varnish layer (14). Half-cut part A (21) of a predetermined shape and a straight half-cut in a state of being penetrated to the middle B (22) is provided, and (b) is a cross-sectional view taken along the line AA 'of (a), with a dot on the surface of the paper layer (13) on the adhesive resin layer (15) side. A half-cut portion A (21) and a half-cut portion having a predetermined shape in a state of having a partially peeled varnish layer (14) in a shape and further being cut through the sealant layer (18) through the paper layer (13) B (22). FIG. 3 is a side sectional view showing an embodiment of the backing laminate material used in the packaging bag of the present invention, and the backing laminate material (30) is bonded to one side of the elongated substrate layer (31). The agent layer (32) and the sealant layer (38) are sequentially laminated.

  A sealing layer may be laminated on the entire surface between the paper layer (13) and the partially peeled varnish layer (14) of the front laminate material (10). Moreover, the said laminated material for back (30) may laminate | stack the intermediate | middle layer which consists of a gas barrier film between an adhesive bond layer (32) and a sealant layer (38).

  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) is made of paper having a basis weight of 50 to 100 g / m ² , and further, two straight perforations (19, 19) extending from one end to the other end in the width direction perpendicular to the flow direction. 20) are repeatedly provided at predetermined intervals. The shape of the perforation line (19, 20) is not particularly limited, and for example, a C-shaped perforation line is used.

  The partially peeled varnish layer (14) is a known gravure method using a coating agent mainly composed of wax, and two linear sewing machines provided on the long paper layer (13). It is applied and laminated on the entire paper layer between the lines of sight (19, 20). When the partially peeled varnish layer (14) is heat-sealed at the time of bag making, the wax component melts and spreads over the entire surface, the adhesive strength is extremely lowered, and the layers on both sides of the portion can be easily separated. .

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

  For the gas barrier layer (16), 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). 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 perspective view showing an embodiment of a packaging bag according to the present invention. The packaging bag (1) is composed of a flat front laminate material (10) and a back laminated laminate material (30). , Has an opening (2) on one side, has a seal part (3) on the opposite side, has side seal parts (4, 5) on both sides, and further at two places on the periphery of the seal part (3) The front laminated material (10) and the back laminated material (30) are penetrated through the bag and have a cut (6, 7). The front laminated material (10) is provided on the front side of the bag. It has perforation lines (19, 20) extending from the tip of the two cuts (6, 7) to the opening (2) in parallel with the side seal parts (4, 5) on both sides. A partially peeled varnish layer (14) provided on the laminated material (10) is provided on the entire surface between the perforation lines (19, 20). The half-cut portion A (21) having a predetermined shape provided in the front laminated material (10) is provided at a predetermined position having the partially peeled varnish layer (14), and similarly, the linear half-cut portion B (22 ) Extending from the tip of the cut (6) on the opening (2) side to the tip of the cut (7) on the opening (2) side, and further on the opening (2) side, the space (40 )have.

  As described above, the packaging bag of the present invention has a dot-like partially peeled varnish layer (14) provided on the front laminated material (10) on the front side of the packaging bag (1), a linear perforation line ( 19 and 20), a predetermined half-cut portion A (21) and a straight half-cut portion B (22), and further, there are two cuts in the seal portion (3) of the packaging bag (1). Since it has (6, 7), the base material layer (11) of the surface laminated material (10) in the portion surrounded by the cut line (6, 7) and the half cut part B (22), the adhesive layer (12) and the paper layer (13) can be peeled together and subsequently peeled along the perforation lines (19, 20), and the half-cut portion A (21 ) Can be cut to provide an outlet for the contents.

FIG. 4 is an explanatory view showing an example of use of the packaging bag of the present invention, in which the opening (2) is sealed after filling the packaging bag with contents (not shown in the figure). The base layer (11), adhesive layer (12), and paper layer (13) of the laminated material (10) for the surface surrounded by the cut line (6, 7) and the half cut part B (22) are joined together. Peeling and then peeling along the perforation lines (19, 20) with a pulling force (P), and the remaining half-cut portion A (21
) Is cut to provide a content outlet (50), from which the content is removed. As shown in the figure, the layer structure of the remaining part after peeling the base material layer (11), the adhesive layer (12) and the paper layer (13) of the front laminated material in order from the front side is the partially peeled varnish. Layer (14), adhesive resin layer (15), gas barrier layer (16), adhesive layer (17), sealant layer (18), sealant layer (38), adhesive layer (32), substrate layer (31) ).

  The use of the packaging bag of the present invention 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 perspective view which shows one Embodiment of the packaging bag of this invention. (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). It is a sectional side view which shows one Embodiment of the laminated material for backs used for the packaging bag of this invention. It is explanatory drawing which shows one use example of the packaging bag of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2 ... Opening part 3 ... Seal part 4, 5 ... Side seal part 6, 7 ... Break 10 ... Outer laminated material 11 ... Base material layer 12, 17 ... Adhesive layer 13 ... Paper layer 14 ... Partial peeling Varnish layer 15 ... adhesive resin layer 16 ... gas barrier layer 18 ... sealant layers 19 and 20 ... perforation line 21 ... half-cut portion A
22 ... Half cut part B
30 ... Laminating material 31 for back side ... Base material layer 32 ... Adhesive layer 38 ... Sealant layer 40 ... Space 50 ... Outlet P ... Pulling force

Claims (1)

  A laminated material in which at least a sealant layer is laminated on one surface of a base material layer, a back laminated material that is gusset-folded, a paper layer having a straight perforation line on one surface of the base material layer, and a halftone dot A half-cut part A having a predetermined shape cut into a part having a partially peeled varnish layer of a laminate obtained by sequentially laminating a partially peeled varnish layer, an adhesive resin layer, a gas barrier layer, and a sealant layer from a sealant layer to a paper layer It consists of a straight half-cut part B, and is laminated with a flat surface laminate material so that the sealant layers face each other, and an opening is provided on one side, and a seal part is provided on the opposite side of the opening. A packaging bag provided with two cuts at predetermined positions on the periphery of the seal part, and provided with side seal parts on both sides, wherein the straight perforation lines are opened from the tips of the two cuts, respectively. Up to Having a partially extending varnish layer on the entire surface between two perforations, and having the half-cut portion A at a predetermined position of the portion having the partially peeled varnish layer, A packaging bag comprising a half-cut portion B in a state of extending from a tip on the opening side of one cut to a tip on the opening side of the other cut.

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