JP2013047103A - Distribution wrapper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a distribution wrapper where a cover is bent and opened to discharge a content therein, and that has a function for automatically discharging expanding pressure in pockets generated when heated in an microwave before unsealed.SOLUTION: The distribution wrapper includes: a hard cover having a bent line on its surface; and a flexible container having a circumferential edge fixed on the back surface of the cover and having the pockets. A discharge pressure port is formed in the hard cover. The discharge pressure port has a sealing part so that it is unsealed around the cover and the pockets.

Description

The present invention relates to a distribution package that can be picked with one hand, bent, and opened, and more particularly, to a distribution package that has a pressure relief function when heated in a microwave oven.

  In the past, a wide variety of products have been sold, including soy sauce and mustard for use in mayonnaise, dressing, and souvenirs. It's being used. These distribution packages that can be picked with one hand, folded and opened, have a flexible pocket around the back of the lid of the hard material, and the upper half of the lid of the hard material is uncut through in the thickness direction. (Cut) is provided. Furthermore, the opening of the opening can be secured by providing a projection on the cut line of the lid of the hard material. Then, when taking out the contents from these distribution packaging bodies, the half cut is broken by bending the lid portion into a V shape so as to sandwich the pocket portion. It has been proposed that the broken portion becomes an opening, and the contents filled in the storage portion can be easily taken out from the opening. (For example, refer to Patent Documents 1 and 2).

JP 59-103866 JP 61-104973 A

Since these can be used easily, they are also used conveniently for lunch boxes sold at convenience stores. However, since the container body with pockets is fixed to the lid of the hard material, when the in-pack (incorporated in the container) into the lunch box, the distribution package body expands due to heating when the lunch box is warmed in the microwave oven. In the worst case, it could explode and ruin the lunch box, so it was unavoidable that it had to be attached (delivered at the same time as the lunch box).
Therefore, in view of these problems, the present invention is in a state where the internal pressure of the distribution package is increased to a certain level so that the distribution package does not rupture even when heated in a microwave oven in a state where the distribution package is packed in a lunch box or the like. It is an object of the present invention to provide a distribution package that can automatically discharge pressure.

The invention of the distribution package of claim 1 comprises a lid of a hard material having a folding line at the center of the surface, and a flexible member container having a peripheral portion fixed to the back surface of the lid and having a pocket portion. In the distribution package, a discharge port is provided in the lid of the hard material, and the discharge port has a seal part that can be peeled around the discharge port by the cover and the container body.

Furthermore, the invention of the distribution package of claim 2 is a lid of a hard material having a folding line provided with a half cut part at the center of the surface, and a peripheral part fixed to the back surface of the lid, and both sides of the folding line. A flexible packaging container body having a pocket portion on the inner side of an adhesive seal between the lid and the peripheral portion of the container body, and at a position other than the pocket portion, the lid of the hard material is bent. In the vicinity of the line, a pressure exhaust port for exhausting a pressure higher than the set value in the container is provided, and the periphery of the pressure exhaust port is closed by a peelable linear seal portion having an acute angle shape.

In the distribution package, it is further preferable that the peelable seal part has an acute-angled seal part which is a rhombus or triangle or a quadrangular linear seal with each side curved inward.

In these distribution wrapping bodies, projections are formed on the folding line on the lid of the hard material having a folding line provided with a half cut portion at the center of the surface, and when the lid is folded into a V shape If the half-cut portion of the protrusion is broken and an opening is formed, it is possible to further improve usability.

According to the first aspect of the present invention, the lid of the hard material is provided with a pressure relief port and has a seal part that can be peeled around the lid, so that a seal is formed when internal pressure is generated in the package When the part is peeled off, a passage is secured at the exhaust port and the package can be prevented from being broken.

Further, according to the invention described in claims 2 to 3, in addition to claim 1, since the shape of the peelable seal is an acute angle shape, the peeling starts from the acute pointed portion due to the internal pressure of the container. Further, it is possible to prevent the package from breaking the bag by securing the passage to the pressure relief port by more reliably peeling the seal portion.
In addition, a passage to the exhaust port is secured by the increase in internal pressure, and if a protrusion is formed on the fold line, an opening of the protrusion is formed when the fold line is bent. It can be taken out.

Therefore, when packed in a lunch box, when the lunch box is warmed in a microwave oven, the distribution package will expand due to heating, but if the internal pressure exceeds a certain level, it can be peeled around the pressure relief port. Since the linear seal peels off and exhausts the pressure, it is possible to prevent the package from rupturing and ruining the lunch box. For this reason, at a convenience store, it can be sold as a product in which a distribution package is packed in a container.

As the reason why conventional packed lunches cannot be in-packed while maintaining the original convenience of removing the contents with a single touch by picking and bending with a finger, the pressure rise in the package when the lunch is heated in a microwave oven is the outlet By providing this, the container can be prevented from being ruptured during heating in a microwave oven, such as a lunch box, because it can be automatically evacuated prior to rupture. In addition to being used for in-packs such as lunch boxes, it is also possible to eat warm products by heating the filling of the distribution package with a microwave oven.

FIG. 1 is a plan view of a package having a diamond-shaped linear seal around a pressure relief outlet in one embodiment of the present invention. FIG. 2 is a side view of FIG. FIG. 3 is a plan view of a package having a linear seal with each side curved inward around the exhaust port in one embodiment of the present invention. FIG. 4 is a plan view of a package having a triangular linear seal around the exhaust port in one embodiment of the present invention. FIG. 5 is a perspective view for explaining a discharge opening portion in which a protrusion is opened when the shape is picked up and bent. FIG. 6 is an explanatory view of another embodiment of the exhaust port.

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

In a conventional distribution package, a peripheral edge portion of a flexible container body is fixed to the back surface of a lid made of hard material to form a pocket portion, and contents are enclosed in the pocket portion, and In order to make it easy to bend the lid, a fold line 8 having a half cut (cut) 4 is provided to about half the thickness of the lid material, and in order to facilitate the extraction of the contents, The fold line 8 has a structure in which a projection 5 having a pyramid shape or a truncated cone shape is formed at the center. In use, the packaging body 1 is sandwiched between fingers, the lid 2 is bent into a V shape so as to press both sides of the pocket 3 around the folding line 8 of the lid 2, and the folding line 8 on the lid 2 is The contents are extracted from the discharge opening 5a of the protrusion 5 provided on the surface. The pocket portion 3 is formed with two pocket portions 3 facing each other with the fold line 8 interposed therebetween, but the facing pocket portions 3 are connected to each other below the projection 5 portion on the fold line 8. 7 to communicate with each other via 7.

[First Embodiment]
FIG. 1 is a plan view showing a package according to the first embodiment of the present invention. The packaging body 1 according to the present embodiment has a configuration of a container body 1 having a lid 2 having a fold line 8 and an exhaust port 12 and pockets 3 on both sides of the fold line 8, and FIG. 2 shows a side view. ing.
The exhaust port 12 will be described in detail with reference to FIGS. 1 and 2 as an example.
The lid 2 and the container body 3 are fixedly sealed around each other, and the lid 2 has a discharge port projection 5 on the fold line 8, and the pressure relief port of the present invention in the vicinity of the fold line 8. 12 is provided.
The linear seal portion 11 having a rhombus shape around the exhaust pressure opening 12 provided in the lid 2 and having an acute angle is weaker than the fixed seal portion 10 around the container body 3. The seal width is narrow or the seal strength is reduced, and a linear seal 11 is provided around the exhaust port 12.

The shape of the exhaust port 12 may be a U-shaped (A) or C-shaped (B) cut as shown in FIG. Since the C-shaped part 12c has a part corresponding to the hole in the lid 2 and is connected to the lid 2, there is no problem of foreign matter of punching debris that occurs during processing, and the hole is further covered. More preferred.

(Action)
When the pressure in the container rises due to heating by the microwave oven, the pressure of the air inside rises uniformly, but the linear seal portion 11 around the exhaust port 12 has a rhombus shape and an acute angle. Then, you will concentrate locally. Further, since the seal strength is set lower than that of the strong fixed seal portion 10 provided in the surrounding area, the acute angle seal around the exhaust port 12 is peeled off, and the pressure in the container can be exhausted.
The packaging body 1 with the exhaust port 12 opened is picked with a finger and bent into a V shape from a fold line 8 to which a half cut 4 is applied, and the contents are taken out from the discharge opening 5a of the unopened protrusion 5. be able to.

[Second Embodiment]
This will be described in detail with reference to FIG.
In addition, the same number is used for a common part.
The difference from the first embodiment is that the location of the exhaust port 12 and the shape of the linear seal portion 11 provided around the exhaust port 12 are different.
The linear seal 11 around the exhaust port 12 is substantially triangular, the bottom is a fixed seal 10 around the lid and the container body, the other left and right sides are curved straight or inward, and the apex angle is an acute angle. is there. The apex angles of the left and right sides other than the fixed seal 10 at the bottom are a linear seal 11 structure that peels off when the pressure in the container rises.

(Function)
As in the first embodiment, the linear seal 11 around the exhaust port 12 is set to be weaker than the surrounding fixed seal 10 when the pressure in the container body 3 rises. Is peeled off, and the internal pressure can be exhausted from the exhaust pressure port 12 provided in the lid 2.

The lid 2 made of hard material is a coextruded film and is composed of at least a PS layer. The PS layer is a layer containing a polystyrene resin as a main component. The polystyrene resin constituting the PS layer is a general-purpose polystyrene (GPPS), impact-resistant polystyrene (HIPS), or a mixture of these resins, from the viewpoint of obtaining a cover material having good cracking properties. Is preferred. Since GPPS does not contain a rubber component, it has a property of being easily broken. On the other hand, HIPS includes a rubber component and has a property of being hard to break. Therefore, the PS layer can adjust the cracking property of the lid 2 at the time of opening by appropriately using GPPS, HIPS and a mixture of these resins.
The lid 2 has a PS layer as a base material, and, as other components, is constituted by a barrier layer and a seal layer that is welded to the container 3. The sealing layer is a layer composed of any one of low density polyethylene (LDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE), polypropylene (PP), or a mixture thereof.

The total thickness of the coextruded film for a lid material is 100 μm or more, more preferably 200 μm or more, particularly preferably 300 μm or more, and 815 μm or less, preferably 700 μm or less, more preferably 600 μm or less. By setting it as such total thickness, it can be made to have the favorable opening property as the cover material 2 of the distribution packaging body 1 which bends and opens the discharge opening part 5a of the protrusion 5 as shown in FIG. .

In the cover of the distribution package, a half cut 4 is provided on the cover of the distribution package, and a protrusion 5 is provided in a direction orthogonal to the half cut 4. The protrusion 5 constitutes the discharge opening 5a. When the lid 2 is bent, the bending stress is concentrated on the half cut 4 at the base of the protrusion 5 constituting the discharge opening 5a, and the protrusion 5 is torn, The contents are discharged from the discharge opening 5a. Examples of the protrusion 5 include a Mt. Fuji shape, a quadrangular pyramid, a semicircular shape (dome shape), a cube, and the like, but are not limited to these shapes as long as stress can be concentrated. A half cut 4 is provided as a fold line 8 on the surface of the lid, and the protrusion 5 can be formed by known plug molding after the film is heated and softened. Further, the exhaust port 12 can be performed by a known method such as a die cut or a Thomson blade.

The half-cut 4 is provided to further concentrate the bending stress on the protrusion 5 so that it can be easily opened. The half-cut 4 crosses the central portion of the formed protrusion 5 with a cutting blade against the total thickness of the lid. , By forming the cuts at a depth of about 10 to 50% continuously in the same direction as the direction in which the lid material is folded. Moreover, the half cut 4 can also be shape | molded by making a cut into the vertex part of a processus | protrusion, and putting others in the shape of a dotted line with the width | variety of about 2-10 mm.

The lid 2 is bonded to the container body 3 to form the package body 1. It is preferable to use an unstretched coextruded composite film for the container body 3. As a configuration, Ny layer / adhesive layer / PE layer is effective from the viewpoint of deep drawing suitability. Further, it is better to stack an oxygen barrier layer. In order to fill the viscous material, which is the contents, deep drawing is performed. As a process, after film heating (contact heating to a hot plate), a method of compressed air / vacuum forming is generally used. 150-180 degreeC is suitable for heating temperature. The molded container body 3 is filled with a viscous body, and is combined with the molded lid member 2 and fixedly sealed. This seal is completely sealed without being peeled off at the seal surface interface between the lid member 2 and the container body 3. The size of the distribution package 1 is about 20-100 mm long × 20-100 mm wide × 3-40 mm deep.
As for the opening method, when both ends of the packaging body 1 are held with one hand and the packaging body 1 is folded in the direction in which the container body 3 comes inward from the center of the lid 2, the projection 5 of the lid 2 opens. The contents are discharged.

Although the present invention has been described with reference to the most practical and preferred embodiments at the present time, the invention is limited to the embodiments disclosed herein. Instead, the present invention can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification.

  In the present invention, the user-friendly distribution package 1 that can be picked with one hand, bent, and opened has been required to be used in many fields, but is not suitable for a microwave oven that can be easily heated. It can be used for microwave ovens, so it is useful not only for convenience store lunches but also for use as a warm source at home.

1 Package 2 Lid 3 Container (Pocket)
4 Half cut
5 Protrusion (discharge port)
5a Discharge opening 6 Reinforcing rib 7 Communication part 8 Folding line 10 Adhering seal (part)
11 Linear seal (part)
11a Linear seal 11b whose side is curved inward Triangular linear seal 11c Rhombus linear seal 12 Pressure relief port 12a U-shaped pressure relief port 12c C-shaped pressure relief port

Claims (4)

In a distribution packaging body comprising a lid of a hard material having a fold line at the center of the surface and a peripheral portion fixed to the back surface of the lid, and a flexible member container having a pocket portion, the lid of the hard material A distribution packaging body comprising a pressure relief port, wherein the pressure relief port has a peelable seal portion around the pressure relief port by the lid and the container body From a rigid material lid having a folding line provided with a half-cut portion at the center of the surface, and a flexible member container having a peripheral edge fixed to the back surface of the lid and having pocket portions on both sides of the folding line In the distribution packaging body, the pressure higher than the set value in the container body is exhausted in the vicinity of the folding line of the lid of the hard material inside the fixed seal between the peripheral part of the lid and the container body, and at a position other than the pocket part. Distributing package characterized in that a pressure relief port is provided, and the periphery of the pressure relief port is closed by a peelable linear seal portion having an acute angle shape The said peelable seal | sticker part has an acute-angle-shaped seal part which is a rhombus, a triangle, or a square-shaped linear seal | curve in which each side is curving inward. Distribution package A lid made of a hard material having a fold line provided with a half cut portion at the center of the surface has a projection formed on the fold line, and the half cut portion of the projection is broken when the lid is bent into a V shape. The dispensing package according to any one of claims 1 to 3, wherein an opening is formed.

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