JP2018034807A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag enabling storing even when a content with volatility or adsorptivity is liquid or gelatinous, and capable of exhibiting a volatility or adsorptivity function which the content has by peeling between inner layers of a packaging bag.SOLUTION: A packaging bag comprises a base material layer, an intermediate layer and an inner layer comprising a multilayer in this order. The packaging bag is such that: surfaces of the inner layer are opposingly arranged; a content having volatility or adsorptivity is sealed and stored inside a packaging bag having a circumference connection part in the circumference; there is provided a non-connection part in the circumference of the packaging bag; and the packaging bag is peeled between the layers of the inner layer comprising the multilayer.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a package in which a volatile or adsorptive content is hermetically stored in a packaging bag, and has the volatile or adsorptive property stored by peeling between inner layers of the packaging bag in use. The present invention relates to a package that exhibits the functions of the contents.

  Packaging that contains volatile or adsorptive contents such as fragrances, deodorants, fragrances, perfumes, deodorants, insect repellents, etc., keeps the contents airtight during distribution and storage. A structure that maintains the volatile or adsorptive function provided by the contents and exhibits the volatile or adsorptive function provided by the contents during use is required. Conventionally, the volatile or adsorptive function of the contents is maintained by storing and sealing the contents in a packaging bag or molded container having a barrier property as having such a structure. A part of the molded container or the like is partially opened to volatilize the content gas to the outside, or an external odor is adsorbed to the content. As a packaging bag, it is opened by sealing a carrier with a fragrance impregnated in a flat-shaped fragrance bag having a peripheral edge sealed and then tearing the V-shaped notch provided on the rim of the aromatic bag. Aromatic bags used are known (for example, see Patent Document 1). In addition, the fragrance is stored in an inner bag having gas barrier properties, and this inner bag is hermetically sealed with a gas permeable outer bag to form a double package, which impairs the volatile function of the fragrance during distribution and storage. There is also known a fragrance package having a structure in which the fragrance gas is diffused to the outside through the outer bag by pressing and breaking the inner bag during use (see, for example, Patent Document 2).

  Since the former fragrance bag is opened, the gas volatilization is fast and the volatile effect is maintained for a short period of time. Not applicable. On the other hand, since the latter fragrance package is sealed with an outer bag at the time of use, it can be applied to liquid contents. However, since the inner bag and the outer bag have a double structure, a process of sealing the inner bag with the outer bag is required, which increases the cost. In addition, the process becomes longer and parts management of the inner bag and the outer bag is necessary, and there is an inconvenience in terms of delivery and management.

JP 2002-145367 A Japanese Utility Model Publication No. 60-1730

  Accordingly, the present invention has been made to solve the above-described problems, and the object of the present invention is to store a volatile or adsorptive content even in a liquid or gel form. It is providing the package which can exhibit the volatile or adsorptive function which the contents have by peeling between inner layers.

  In order to achieve the above-mentioned object, the present invention according to claim 1 is composed of a laminated film having an inner layer composed of a base layer, an intermediate layer, and a multilayer in order, and the surfaces of the inner layers face each other. A packaging body in which a volatile or adsorptive content is hermetically stored in a packaging bag provided with a peripheral joint on the periphery, and provided with an unjoined portion on the periphery of the packaging bag, The packaging body is characterized in that the packaging bag is peeled between the inner layers composed of multiple layers.

  Further, the present invention according to claim 2 is the packaging body according to claim 1, wherein the packaging bag is arranged such that the upper peripheral edge joint portion and the lower peripheral edge joint portion are arranged opposite to each other at the peripheral edge in one direction. It is a three-side-seal type packaging bag made of a single laminated film in which a side-end joint and a folded-back portion are arranged to face each other in the peripheral direction, and the unjoined part outward from the outer edge of the side-end joint It is characterized by having.

  Further, the present invention according to claim 3 is the packaging body according to claim 1, wherein the packaging bag is opposed to the upper and lower peripheral edge joints arranged opposite to each other in the vertical direction. A four-side-seal type packaging bag including a non-joined portion on an outer side of an outer edge of the side-end joint portion.

  Moreover, the present invention according to claim 4 is the package according to claim 2 or claim 3, wherein the side end joint portion includes a first side end joint portion on the outside and a second side end joint portion on the inside. The first side end joint portion has a stronger joint strength than the second side end joint portion.

  Further, the present invention according to claim 5 is characterized in that, in the packaging body according to any one of claims 2 to 4, the side end joint portion has a chevron shape bulging outward. To do.

  The package of the present invention can be stored even if the volatile or adsorptive content is in liquid or gel form, and the volatile or adsorptive property of the content by peeling between the inner layers of the packaging bag. The function can be demonstrated.

It is a top view which shows 1st embodiment of the package which concerns on this invention. It is the sectional view on the AA line of FIG. It is an enlarged view in a circle shown in Drawing 2, and is a sectional view showing an important section of a packing object concerning the present invention. It is a figure explaining the peeling start state of the package which concerns on this invention. It is explanatory drawing which shows the state which peeled the package of 1st embodiment which concerns on this invention. It is the top view and sectional drawing which show 2nd embodiment of the package which concerns on this invention. It is a top view which shows 3rd embodiment of the package which concerns on this invention. It is a top view which shows 4th embodiment of the package which concerns on this invention.

The present invention will be described in detail below with reference to the drawings.
FIG. 1 is a plan view showing a first embodiment of a package according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged view in a circle shown in FIG. Sectional drawing which shows the principal part of the package which concerns on FIG. 4, FIG. 4 is a figure explaining the peeling start state of the package which concerns on this invention, FIG. 5 shows the state which peeled the package of 1st embodiment which concerns on this invention FIG. 6 is a plan view and a cross-sectional view showing a second embodiment of the package according to the present invention, FIG. 7 is a plan view showing a third embodiment of the package according to the present invention, and FIG. It is a top view which shows 4th embodiment of the packaging body which concerns, 100, 200, 300, 400 in a figure is a packaging body, 1, 1 ', 1''is a packaging bag, 2 is a laminated film, 2a is surface lamination | stacking Film, 2b is a back laminated film, 21 is a base material layer, 22 is an intermediate layer, 23 is an inner layer, 23a is a first layer, 23b is a second layer, 23c is an easily peelable layer, 3d is a heat-sealing layer, 3 is a peripheral joint, 3 'is a peripheral joint peeling mark, 31 is an upper peripheral joint, 32 is a lower peripheral joint, 33 and 34 are side end joints, and 33s is a first side. An end joint portion, 33w is a second side end joint portion, 33m is a side end joint portion, 4 is an unjoined portion, 5 is a content, 6 is a folded portion, and 7 is a peeled film piece.

  FIG. 1 is a plan view showing a first embodiment of a package according to the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an enlarged view in a circle shown in FIG. The packaging body 100 of the first embodiment is made of a laminated film 2, is disposed in a state where the inner surfaces are opposed to each other, and has a volatile or adsorptive liquid state inside the packaging bag 1 provided with a peripheral edge joining portion 3 at the periphery. The content 5 (see FIG. 2) is hermetically stored. The packaging bag 1 used for the packaging body 100 of the first embodiment is a four-sided seal type bag composed of two laminated films 2 as shown in FIGS. 1 and 2, and has a front laminated film 2a on the front surface and a back surface. Is provided with a back laminated film 2b. As shown in FIG. 3, the front laminated film 2a and the back laminated film 2b of the laminated film 2 are configured to include a base layer 21, an intermediate layer 22, and an inner layer 23 composed of multiple layers in order. The inner layer 23 of the front laminated film 2a and the inner layer 23 of the back laminated film 2b are arranged to face each other, and the upper edge peripheral joint portion 31 and the lower end peripheral joint portion 32 are provided to face each other in the two directions. The side end joint portion 33 and the side end joint portion 34 are provided to face each other. The unjoined portion 4 is provided at the periphery of the corner where the upper end peripheral joint portion 31 and the side end joint portion 33 intersect.

  FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 that connects a corner portion where the upper end peripheral joint portion 31 and the side end joint portion 33 intersect with a corner portion where the lower end peripheral joint portion 32 and the side end joint portion 34 intersect. In this case, the unbonded portion 4 is provided at the outer edge, and the liquid content 5 having volatile or adsorptive properties is hermetically stored inside the packaging bag 1.

  As shown in FIG. 3, the unbonded portion 4 provided at the outer edge of the corner where the upper end peripheral edge bonded portion 31 and the side edge bonded portion 33 intersect has the front laminated film 2 a and the back laminated film 2 b unbonded. The unbonded portion 4 serves as a knob when the front laminated film 2a and the back laminated film 2b are peeled off. The front laminated film 2a and the back laminated film 2b include a base layer 21, an intermediate layer 22, and an inner layer 23 composed of multiple layers in order, and the inner layer 23 has a first layer 23a, a second layer 23b, and an easy release layer sequentially from the intermediate layer 22 side. The layer 23c and the heat sealing layer 23d are stacked. The inner layer 23 is not limited to the four layers shown in FIG. 3 as long as the easily peelable layer 23c is provided. The first layer 23a or the second layer 23b may be omitted to form a three-layer structure. The contents 5 are sealed and stored at the peripheral joint 3 with the heat-sealing layer 23d of the inner layer 23 of the front laminated film 2a and the heat-sealing layer 23d of the inner layer 23 of the back laminated film 2b facing each other.

  The laminated film 2 used for the packaging bag 1 constituting the package of the present invention will be described. As shown in FIG. 3, the laminated film 2 preferably has a configuration in which a base material layer 21, an intermediate layer 22, and an inner layer 23 are laminated.

  As the base material layer 21 constituting the laminated film 2, since it becomes a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical, etc. can be used. Polypropylene film, polyethylene terephthalate film, nylon film, and films combining these can be used. Alternatively, a film having a barrier layer formed by applying a barrier resin composition such as polyvinylidene chloride or polyvinyl alcohol to the above film, or aluminum, aluminum oxide, silicon oxide, indium oxide, tin oxide, zirconium oxide, etc. The thing which vapor-deposited the inorganic substance and provided the vapor deposition layer can be used. As these films, usually, the base material layer 21 is often printed, and printability is required. Therefore, a film stretched in a uniaxial direction or a biaxial direction is preferable. In addition, the thickness of the film constituting the base material layer 21 may be a thickness that can be held to the minimum necessary for strength, rigidity, etc. as a basic material, and may be determined in consideration of the cost, Usually, it is about 9-50 micrometers.

  The intermediate layer 22 is provided to provide gas barrier properties and the like, and deposits inorganic materials such as aluminum, aluminum oxide, silicon oxide, indium oxide, tin oxide, and zirconium oxide on plastic films such as polyester, polypropylene, and nylon. Plastic film with a layer of a barrier resin composition such as polyvinylidene chloride and polyvinyl alcohol on plastic film such as polyester, polypropylene, nylon, etc., ethylene-vinyl alcohol copolymer, vinylidene chloride, polyvinyl alcohol, etc. A plastic film made of a resin having a gas barrier property, a metal foil such as aluminum, iron, copper, and tin can be used. The thickness of the intermediate layer 22 is about 9 to 50 μm.

  The inner layer 23 needs to be delaminated, and the innermost layer needs to be melted by heat so that they can be fused to each other. In order to fulfill these functions, at least an intermediate layer 23c and an innermost layer It is composed of multiple layers provided with a heat sealing layer 23d. FIG. 3 shows a four-layer configuration in which a first layer 23a, a second layer 23b, an easy-peeling layer 23c, and a heat-fusible layer 23d are sequentially stacked as an example of a multilayer, but is not limited thereto. A three-layer structure in which an easy-peeling layer 23c and a heat-sealing layer 23d are laminated on the first layer 23a or the second layer 23b can also be adopted. Furthermore, if necessary, a new layer can be added to form a multilayer of 5 or more layers.

  The first layer 23a and the second layer 23b prevent the occurrence of pinholes in the laminated film 2 due to the role of a gas barrier layer that further improves the gas barrier properties of the laminated film 2 and the external force applied during transportation and handling of the package 100. For example, nylon, ethylene-vinyl alcohol copolymer, or the like is used. The stacking order of the first layer 23a and the second layer 23b is arbitrary, but the layer facing the easily peelable layer 23c is the first layer 23a or the second layer 23b using an ethylene-vinyl alcohol copolymer. Is preferred.

  The easily peelable layer 23c is a layer for peeling between the first layer 23a and the second layer 23b facing each other and has gas permeability, and has an interlayer adhesive strength between the easily peelable layer 23c and the heat fusion layer 23d. It is possible to achieve peeling between the layers of the inner layer 23 by increasing the interlayer adhesive strength between the easily peelable layer 23c and the first layer 23a or the interlayer adhesive strength between the easily peelable layer 23c and the second layer 23b. The easily peelable layer 23c is made of, for example, a resin composition containing a polyethylene resin and a maleic anhydride modified resin. By changing the blending ratio of these resins, the interlayer adhesive strength between the first layer 23a or the second layer 23b and the easily peelable layer 23c is controlled. The interlayer adhesion strength is usually 5 to 100 g / 15 mm width, preferably 10 to 30 g / 15 mm width. When the interlayer adhesion strength is weaker than 5 g / 15 mm width, there is a risk of peeling between the layers in the product distribution stage of the package 100, and when the interlayer adhesion strength is greater than 100 g / 15 mm width, the interlayer does not peel between the layers, and the heat-sealing layer 23 d There is a risk of breaking. The interlaminar adhesive strength was measured by measuring a strip cut to a width of 15 mm with a tensile tester at a tensile speed of 300 mm / min and a peeling angle of 90 °. The blend of the resin composition containing the polyethylene resin and the maleic anhydride-modified resin for obtaining the interlayer adhesive strength is usually 98 to 55% by weight, preferably 95 to 75% by weight for the polyethylene resin.

  For the heat-sealable layer 23d, for example, a heat-adhesive resin in which the heat-sealable layers 23d are fused together by heat bonding is used, and the heat-adhesive resin needs to have gas permeability. Examples of such a heat-adhesive resin include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, polypropylene, ethylene-α olefin copolymer, and ethylene-propylene copolymer. Resins such as polymer, ethylene-vinyl acetate copolymer, ionomer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-acrylic acid ester copolymer, ethylene-methacrylic acid ester copolymer preferable. In order to make the peeling start mechanism a root cut at the seal edge of the peripheral joint portion 3 (the easily peelable layer 23c and the heat seal layer 23d are cut at the seal edge), the heat seal layer 23d is made of low density polyethylene. preferable. Further, by changing the density and thickness of the resin of the heat fusion layer 23d, the speed at which the gas volatilized from the contents 5 according to the purpose can be controlled.

Although the usage method of the package 100 will be described later, when the package 100 is used, after the inner layer 23 is peeled between the layers, for example, the gas volatilized from the contents 5 causes the easily peelable layer 23c and the heat-fusible layer 23d. It is necessary to permeate and diffuse outside, and has gas permeability. The inner layer 23 is preferably manufactured by a coextrusion method. The total thickness of the easy-peeling layer 23c and the heat-sealing layer 23d is usually 25 μm to 100 μm. If it is less than 25 μm, pinholes or the like may occur during use, and if it exceeds 100 μm, the speed at which the content 5 volatilizes becomes slow and the cost increases. The volatilization rate can be changed by the density of the heat-adhesive resin of the heat-sealing layer 23d, and the density is preferably 0.925 to 0.955 g / cm ^{3 in} consideration of the ability to break off at the start of peeling.

  As a method of laminating the base material layer 21, the intermediate layer 22, and the inner layer 23, for example, a dry lamination method in which lamination is performed using a dry laminating adhesive such as urethane, or extrusion lamination in which polyethylene resin or the like is melt-extruded and laminated. The law can be used.

  The contents 5 hermetically sealed in the packaging bag 1 are volatile or adsorptive, and the volatile contents 5 include fragrances, deodorants, fragrances, perfumes, insect repellents. And repellents. Examples of the adsorbent content 5 include deodorizers. The contents 5 may be solid, powder, liquid or gel.

  Below, the usage method of the package 100 of this invention is demonstrated using FIG. 4, FIG. In use, when the unbonded portion 4 is picked and the front laminated film 2a and the back laminated film 2b are pulled in opposite directions, as shown in FIG. The peeling layer 23c is cut and peeling occurs between the second layer 23b and the easy peeling layer 23c. If the pulling is continued, the peeling between the second layer 23b and the easy peeling layer 23c proceeds, and the outer edge of the side end bonded portion 34 As shown in FIG. 5, the peeled film piece 7 is separated. The cut easily peelable layer 23c and the heat sealing layer 23d remain integrally with the back laminated film 2b to seal the contents 5, and the peelable easily peelable layer 23c is exposed on one side, For example, if the product 5 is a fragrance, the fragrance gas is vaporized through the heat-sealing layer 23d and the easy-release layer 23c, and if the content 5 is a deodorizer, the easy-release layer 23c and the heat The outer odor is adsorbed through the fusing layer 23d. Although FIG. 4 showed the example peeled between the layers of the inner layer 23 of the surface laminated | multilayer film 2a, the interlayer peeling of the inner layer 23 peels similarly between layers also in the back laminated film 2b. That is, when the unbonded portion 4 is picked and peeled, delamination occurs in either the inner layer 23 of the front laminated film 2a or the inner layer 23 of the back laminated film. In FIG. 5, the halftone dot portion denoted by reference numeral 3 ′ indicates a peeling mark after the peripheral joint portion 3 is peeled off.

  FIG. 6 is a view showing a package 200 according to the present invention of the second embodiment, FIG. 6 (a) is a plan view, and FIG. 6 (b) is a sectional view taken along line BB. The package 200 is formed by folding and stacking one laminated film 2 so that the surface of the inner layer 23 faces the folded portion 6 so that the upper edge peripheral joint portion 31 and the lower edge peripheral joint portion 32 face each other in one direction. The contents 5 are hermetically sealed in a three-side-seal type packaging bag 1 ′ in which the side end joint portion 33 and the folded-back portion 6 are arranged to face each other in the two directions. The packaging bag 1 ′ includes an unjoined portion 4 outside the outer edge of the side end joined portion 33. The unjoined portion 4 is provided in a belt shape from the upper end to the lower end of the packaging bag 1 ′ along the outer edge of the side end joined portion 33.

  The package 200 of the second embodiment picks up the unjoined portion 4 and pulls one side and the other side of the laminated film 2 in directions opposite to each other. In the laminated film 2 on one side, the heat-sealing layer 23d and the easy peeling layer 23c of the inner layer 23 are cut, and peeling occurs between the second layer 23b and the easy peeling layer 23c, If the pulling is continued further, the delamination of the second layer 23b and the easy-peeling layer 23c proceeds, reaches the folded-back portion 6, and when reversed by the folded-back portion 6, further delamination progresses, and in the laminated film 2 on the other side, the second peeling occurs. When the peeling continues between the layers 23b and the easily peelable layer 23c and reaches the outer edge of the unjoined portion 4 on the other side, the peeling is finished, and the peeled film piece 7 is separated. The contents 5 are hermetically sealed only by the separated and remaining easily peelable layer 23c and the heat-fusible layer 23d. If the contents 5 are, for example, a fragrance, the heat-fusible layer 23d and the easily peelable layer 23c are stored. If the content 5 is a deodorizer, the odorant gas is adsorbed through the easy-peeling layer 23c and the heat-sealing layer 23d. The packaging bag 1 ′ of the packaging body 200 of the second embodiment is a three-sided seal type, and the inner layer 23 is peeled off on both the front and back surfaces of the packaging body 200. Therefore, the packaging body 200 has an effect that the amount of gas volatilization of the contents 5 is increased as compared with the four-side sealed packaging bag 1 of the packaging body 100 of the first embodiment in which the inner layer 23 is peeled only on one side.

  FIG. 7 is a plan view showing a third embodiment of the packaging body 300 according to the present invention, in which an upper edge peripheral joint portion 31 and a lower end peripheral joint portion 32 that are arranged facing each other in the vertical direction are arranged facing each other in the left and right directions. The contents 5 are hermetically sealed in a four-side-seal type packaging bag 1 ″ having a side end joint 33 and a side end joint 34. The packaging bag 1 ″ includes an unjoined portion 4 outside the outer edge of the side end joined portion 33. The unjoined portion 4 is provided in a belt shape from the upper end to the lower end of the packaging bag 1 ″ along the outer edge of the side end joined portion 33. As shown in FIG. 7, in the package 300, the side end joint portion 33 includes a first side end joint portion 33s on the outside and a second side end joint portion 33w on the inside. The first side end joint portion 33s is preferably knurled thermal bonding (seal), and the second side end joint portion 33w is preferably a solid seal. By providing the first side end bonding portion 33s in the side end bonding portion 33, when the unbonded portion 4 is picked and the laminated film 2 is pulled in the opposite direction, the easily peelable layer 23c and the heat fusion layer 23d of the inner layer 23 are formed. It is easy to cut (root cut), the transition of the inner layer 23 to delamination becomes smooth, and peeling becomes easy. Further, the bonding strength of the first side end bonding portion 33s is stronger than the bonding strength of the second side end bonding portion 33w. This seems to be the effect of changing the seal of the first side end joint part 33s and the second side end joint part 33w. The side end joint portion 33 can be provided by, for example, using a two-stage seal and sequentially or simultaneously performing a solid seal and a knurled seal. Alternatively, a method may be used in which first the whole surface of the side end joint portion 33 is solid-sealed to provide the second side end joint portion 33w, and then the first side end joint portion 33s is provided so as to overlap the second side end joint portion 33w. In this case, the first side end joint portion 33s is sealed twice, which is preferable because stronger joint strength can be obtained than the second side end joint portion 33w. By doing so, delamination of the inner layer 23 is facilitated without being broken at the inner edge of the second side end joint portion 33w. Further, the configuration in which the side end joint portion 33 includes the first side end joint portion 33 s on the outer side and the second side end joint portion 33 w on the inner side can be similarly applied to the side end joint portion 33 of the package 200.

  FIG. 8 is a plan view showing the packaging body 400 of the fourth embodiment according to the present invention, which is different from the packaging body 200 of the second embodiment in the configuration of the side end joint portion 33 and the unjoined portion 4. The rest is the same. As shown in FIG. 8, the package 400 has a mountain shape in which the side end joint portion 33m bulges outward. The side end joint portion 33m has an apex near the middle position of the vertical length of the packaging bag 1 ', and has an inclination from the apex toward the upper end peripheral joint portion 31 and the lower end peripheral joint portion 32 and down toward the folded portion 6 side. ing. The unjoined portion 4 is provided outward from the outer edge of the side end joined portion 33m. The packaging bag 1 ′ of the packaging body 400 has an angle-shaped side end joint portion 33 m, thereby providing an effect of facilitating the start of peeling and widening the range of sealing condition setting that is not rooted inside the sealing edge. Moreover, the structure of the side end joint part 33 and the unjoined part 4 provided with the chevron shape bulging outward can also be applied to the side end joint part 33 of a four-side seal type bag.

  The packaging bodies 100, 200, 300, and 400 of the present invention may be filled with the contents 5 after being made with an existing bag making machine, or in-line while making a bag with a filling machine while rewinding the winding. The contents 5 may be filled and packaged.

  The following examples further illustrate the present invention.

[Example 1]
A film (SVMPET) in which silicon oxide is deposited on one surface of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm as the base layer 21, a biaxially stretched polyethylene terephthalate film (PET) having a thickness of 12 μm as the intermediate layer 22, and an inner layer 23 Easy peelable layer resin (C) comprising a resin composition comprising a nylon resin (A) having a thickness of 70 μm, an ethylene-vinyl alcohol copolymer resin (B), a polyethylene resin and a maleic anhydride-modified resin, linear low Gravure printing on the surface of SVMPET on which silicon oxide is deposited, using a multilayer film of A / B / C / D co-extruded using a density polyethylene resin (D) (manufactured by Mitsubishi Plastics, Diamilon YF594) (GR) and dry laminate (DL) the printed surface and PET with urethane two-component reactive adhesive Further, after applying a coating solution of urethane-based anchor coating agent on the PET surface and drying to provide an anchor coating layer (AC), low-density polyethylene (PE) obtained by thermally melting the AC surface and the A layer surface of the multilayer inner layer ) Is extruded from a T die at a thickness of 13 μm and laminated by a sandwich lamination method, and a laminated film 2 having a structure of <SVMPET 12 μm / GR / DL / PET 12 μm / AC / PE 13 μm / inner layer 70 μm (A / B / C / D)> Produced. The thickness of the D layer of the coextruded A / B / C / D multilayer film was 50 μm.

  Using the laminated film 2, the liquid fragrance was hermetically stored in a four-side-seal type packaging bag 1 to produce a package 100. In addition, the outer dimension of the packaging bag 1 was 70 mm in vertical length x 60 mm in left and right length.

[Example 2]
Biaxially stretched film (HB, Gunze Co., Ltd., trade name: HEPTAX HBF) provided with a nylon layer and a polyester layer having a thickness of 15 μm as the base material layer 21, an aluminum foil (AL) having a thickness of 7 μm as the intermediate layer 22, Using the multilayer film used in Example 1 as the inner layer 23, gravure printing (GR) is performed on the surface of the nylon layer of HB, and the printed surface and AL are dry laminated (DL) with a urethane-based two-component reactive adhesive, Furthermore, the AL surface and the A layer surface of the multilayer inner layer are dry laminated (DL) with a urethane-based two-component reactive adhesive, <HB 15 μm / GR / DL / AL 7 μm / DL / inner layer 70 μm (A / B / C / D) A laminated film 2 having a structure of> was produced. Using the obtained laminated film 2, the liquid fragrance was hermetically stored in a three-side-seal type packaging bag 1 ′ to produce a package 200. The size of the packaging bag 1 ′ was the same as in Example 1.

Example 3
Example 2 was the same as Example 2 except that the side end joint 33 was provided with a first side end joint 33s of a knurled seal and a second side end joint 33w of a solid seal shown in FIG.

Example 4
The side end joint portion 33 was a chevron-shaped side end joint portion 33m shown in FIG. 8, and the thickness of the D layer of the multilayer film A / B / C / D coextruded of the inner layer 23 was 30 μm. Otherwise, it was the same as Example 2.

  After leaving the obtained package to stand at room temperature (25 ° C.) for 1 month, no leakage of the liquid fragrance was observed in any of the packages of Examples 1, 2, 3, and 4. After that, when the unjoined portion 4 was picked and pulled in the opposite direction for each of the packaging bodies of Examples 1, 2, 3, and 4, it could be easily peeled between the B layer and the C layer of the inner layer 23. Examples 3 and 4 were more easily peeled off than Examples 1 and 2. In Example 4, the thickness of the D layer that was peeled off and remained on the side of the package 400 was thin, and the contents 5 were more easily volatilized. Therefore, the fragrance of the fragrance was felt stronger than in Example 1. In addition, since Example 2 and Example 3 were able to peel both surfaces compared with Example 1, the scent was strongly felt.

  As described above, the package of the present invention can be stored even if the volatile or adsorptive content is liquid or gel-like, and the volatile content of the content by peeling between the inner layers of the packaging bag. Or adsorptive function can be exhibited. Moreover, it becomes what was excellent in portability by making the size of a package into a pocket-sized sachet.

100, 200, 300, 400 Package 1, 1 ′, 1 ″ Packaging bag 2 Laminated film 2a Front laminated film 2b Back laminated film 21 Base layer 22 Intermediate layer 23 Inner layer 23a First layer 23b Second layer 23c Easy peeling Layer 23d Thermal fusion layer 3 Peripheral joint 3 'Peripheral joint separation trace 31 Upper end peripheral joint 32 Lower end peripheral joint 33, 34 Side end joint 33s First side end joint 33w Second side end joint 33m side End joint part 4 Non-joint part 5 Contents 6 Folded part 7 Stripped film piece

Claims (5)

It consists of a laminated film with an inner layer consisting of a base material layer, an intermediate layer, and a multilayer in order, and the inner layer faces are arranged to face each other, and inside the packaging bag having a peripheral edge joint at the periphery, is volatile or adsorbed A package in which the contents having the property are hermetically stored,
A packaging body comprising an unjoined portion at a peripheral edge of the packaging bag, and the packaging bag is peeled between layers of the inner layer composed of multiple layers. The packaging bag is arranged in such a manner that the upper edge peripheral joint portion and the lower end peripheral joint portion are arranged to face each other in the peripheral direction in one direction, and the side end joint portion and the folded portion are arranged to face each other in the peripheral edge in the two directions. It is a three-side seal type packaging bag made of the laminated film,
The package according to claim 1, wherein the unjoined portion is provided outward from an outer edge of the side end joined portion. The packaging bag is a four-side-seal type packaging bag provided with an upper-end peripheral joint and a lower-end peripheral joint disposed opposite to each other in the vertical direction, and a side end joint disposed opposite to the left and right.
The package according to claim 1, wherein the unjoined portion is provided outward from an outer edge of the side end joined portion. The side end joint is provided with a first side end joint on the outside and a second side end joint on the inside, and the first side end joint is stronger than the second side end joint. The package of Claim 2 or Claim 3 to do. The package according to any one of claims 2 to 4, wherein the side end joint portion has a mountain shape that bulges outward.

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