CN100400393C - sealed container - Google Patents

Abstract

The present invention provides an easy-to-handle airtight package that can be resealed simply and surely while increasing the area of the opening for taking out. At least one surface (11) of a sealed package is formed from a sheet comprising a substrate layer oriented in a specific direction and a sealing layer, with the sealed package having a peripheral seal extending in a direction crossing the specific direction. The above-mentioned surface (11) has "a cut extending at a predetermined length in a direction transverse to the specific direction, with both ends pointing to the same side almost parallel to the specific direction", "adhesive sealing sheet for unsealing attached to the cut", and "at least in the vicinity of the peripheral sealing portion, an easily breakable area located on an imaginary line drawn from both ends of the cut in a specific direction". The airtight package is accommodated in an outer package (50) in a crimped state for use. The door leaf (55) carried by the outer package (50) can move between an open position and a closed position, the above-mentioned open position is to expose the position of the opening (11a) of the sealed package, and the closed position is to cover the surrounding area of the opening. firmly press the position of the sealed package.

Description

sealed container

technical field

The invention relates to a sealed package for packing contents such as wet tissue.

Background technique

A repeatedly reclosable closed bag for storing contents such as wet tissues is known (for example, Patent Document 1).

In the closed bag disclosed in Patent Document 1, the lid made of the adhesive sealing strip is opened, the wet tissue is pulled out from the exposed opening, and the lid is closed again to prevent the remaining wet tissue from drying.

[Patent Document 1] Utility Model Publication No. Sho 59-99974

However, when the above-mentioned closed bag is sealed again, it must be troublesomely carefully pressed so that there is no gap between the adhesive sealing strip and the surface of the bag wall. Furthermore, if the airtightness is not sufficient, the remaining wet tissue will dry out.

On the other hand, the airtight container disclosed in Patent Document 2 can be reliably sealed, but the content (wet tissue, etc.) must be taken out through a small opening, so there is a problem of difficulty in taking it out. Especially when the container is miniaturized for portability, since the increase of the opening area is limited, the above-mentioned problem is more remarkable.

[Patent Document 2] Japanese Unexamined Patent Publication No. 8-217113

Contents of the invention

In view of the above-mentioned problems of the prior art, an object of the present invention is to provide an easy-to-handle airtight package that can be easily and reliably reclosed and has a large opening area for taking out.

The present invention was developed to effectively solve the above-mentioned problems, and provides a hermetic package having the following characteristics.

The airtight package of the present invention comprises at least one side of the airtight package from a sheet comprising a "sealing layer" and a "substrate layer having orientation in a specific direction". The above-mentioned surface has "a cut extending at a predetermined length in a direction transverse to the specified direction, with both ends pointing to the same side almost parallel to the specified direction", "adhesive sealing sheet for opening attached to the cut", and "at least The frangible area, near the perimeter seal, on an imaginary line drawn in a specified direction from both ends of the cut".

The "specific direction" in the present invention means the direction in a substrate having directivity in a certain direction.

The so-called "easy-to-break region" refers to a region where the strength of the sheet is weakened, and can be formed by providing a "cut" and an "easy-peelable layer" on a specific part of the sheet.

The present invention provides a hermetic packaging mechanism consisting of "a hermetic package in which an opening is formed by removing the adhesive sealing sheet for unsealing" and "an outer package containing the hermetic package in a crimped state". The movable plate of the outer packaging body of the airtight packaging mechanism can move between "an open position exposing the above-mentioned opening of the airtight package" and a "closed position covering the periphery of the opening and pressing the airtight package".

The effect of the invention

In the sealed package of the present invention with the above-mentioned structure, since one side of the package box has directionality along a specific direction, and both ends of the slit point to a specific direction together, once the adhesive sealing strip is torn off, the two ends of the slit along the break in a specific direction.

Since the package is broken in a specific direction, an easy-to-break area is provided at the peripheral sealing portion of the packaging box, so that a part of the surface is finally broken to form an opening. Therefore, the opening can be easily provided in the package by removing the opening sheet.

Moreover, since the opening is formed extending to the periphery of the package, the opening area is large, and when taking out the inner content (wet tissue, etc.), the end thereof can be lifted, thereby simplifying the taking-out operation. In particular, when a portable small airtight package is formed, the package box itself can be miniaturized and the opening area can be increased at the same time.

Just put the sealed package with the opening formed as described above into the above-mentioned outer package in a crimped state, that is, the opened state and the sealed state can be repeatedly realized through simple operations, and a reproducible sealed package mechanism is formed.

Description of drawings

Fig. 1 is a perspective view showing a sealed package according to an embodiment of the present invention.

Fig. 2 is a perspective view illustrating an unsealing operation of the sealed package of Fig. 1 .

Fig. 3 is a perspective view showing a state in which the airtight package is completely opened from the state in Fig. 2 .

Fig. 4 is a perspective view illustrating a state in which an outer package housing the airtight package of Fig. 1 is opened.

Fig. 5 is a perspective view showing a closed state of a cover of the outer package shown in Fig. 4 .

Fig. 6 is a perspective view showing a state in which the door of the cover is opened from the state of Fig. 5 .

Fig. 7 is a perspective view showing a sealed package according to another embodiment of the present invention.

Fig. 8 is a perspective view showing a sealed package according to still another embodiment of the present invention.

Detailed ways

Embodiments of the present invention will be described in detail below with reference to the drawings. Fig. 1 is a perspective view showing a sealed package 10 according to an embodiment of the present invention.

(Structure of sealed package 10)

One wall surface 11 of the airtight package 10 is constituted by a laminated sheet including a base material layer having orientation in a "specific direction". The term "specific direction" in the present invention means a direction in a base material having directivity in one direction. In the illustrated example, the direction along the imaginary line 30 in FIG. 1(b) is " specific direction".

When the sealed package 10 is made of a single sheet, the entire sheet constituting the package 10 has directionality along a "specific direction", but as can be seen from the following, in order to achieve the purpose of the present invention, at least only the wall surface 11 has directionality. .

The slit 12 extends a predetermined length across the "specific direction" in the wall surface 11 . Both ends 12a thereof are directed to the same side almost parallel to the "specific direction" (see FIG. 1( b )). The cutout 12 is formed through the wall surface 11 .

The adhesive sealing sheet 13 for opening is attached to the wall surface 11 so as to cover the cutout 12 . When the adhesive sealing sheet 13 for unsealing is lifted, the opening 11a can be formed in the sealed package 10 as described later by breaking from the part of the cutout 12 .

As shown in Figure 2, if the adhesive sealing sheet 13 for unsealing is torn in the direction of the arrow, the wall 11 will be broken from the part of the incision 12, and extend along the incision 15, and finally as shown in Figure 3, a part of the wall 11 will be broken. Torn off, an opening 11 a is formed at the site of the peripheral seal 16 .

In order to change the direction of breaking, a notch 15 is provided in the vicinity area A of the peripheral seal portion 16 shown in FIG. 1( a ). From the above point of view, the notch 15 does not have to span the entire surface of the wall surface 11, and it is sufficient if it exists at least in the vicinity of the region A. That is, the area A near the intersection of the imaginary line 30 drawn from both ends of the notch 12 in the "specific direction" and the peripheral sealing portion 16 is an easy-to-break area. In this embodiment, the cuts 15 are provided on the sheet to weaken the strength of the area A and form an easy-to-break area.

When the notch 15 across the entire wall surface 11 is not provided along the imaginary line 30, the wall surface 11 can be torn as shown in FIG. However, from the viewpoint of ease of manufacture, it is preferable to form the notches 15 across the entire wall surface 11 as shown in the figure. Moreover, at this time, the incision 15 acts as a guide, and the wall surface 11 can be torn apart in a "specific direction" more reliably than relying solely on the directionality of the base material.

The sheet constituting the airtight package 10 contains an aluminum layer as a barrier layer that forms airtightness. The specific lamination structure is not particularly limited. As an example, it can be from the outer surface of the packaging box to the inner side according to the "uniaxially stretched PET (polyethylene terephthalate) layer, printing layer, bonding layer, PE (polyethylene) layer, aluminum layer (isolation layer), tie layer, CPP layer (non-extended polypropylene layer)" in sequence. Here, the uniaxially stretched PET layer constitutes the base material layer.

The cutout 12 runs through the entire laminated structure of the sheets, but since the unsealing adhesive sealing sheet 13 covers the cutout 12, the airtightness of the package 10 before opening can be maintained.

On the other hand, in order to maintain airtightness, for example, only the uniaxially stretched PET layer and the printing layer may be cut from the outer surface side to form short slits, and the short slits are arranged linearly at intervals to form the cuts 15 .

As shown in FIG. 3, since the sealed package 10 of the present invention is unsealed by partially tearing the wall surface 11, it does not have a resealing function by itself. As shown in FIGS. 4 to 6 , the sealed package 10 in an open state is housed in an outer packaging body 50 for use. In addition, the so-called notch 15 may be a needle eye shape of a sewing machine, a linear shape, or a scratch.

(Other components of the breakable area)

In the present invention, in order to weaken the strength of the sheet in the area A and make this area an easy-to-break area, the unsealing sheet in this area can be removed. In the above example, the easy-to-break region is formed by setting cuts 15 on the sheet, and other examples are as follows.

(An easy-peelable layer is provided between the substrate layer and the sealing layer to form an easy-to-break area)

In the example of FIG. 7 , an easily peelable layer is provided between the base material layer and the sealing layer constituting the sheet in the region indicated by reference numeral 60 .

The sheets constituting the wall surface 11 are arranged from the outer surface to the inner side in order of "uniaxially stretched PET (polyethylene terephthalate) layer, printing layer, easy-peelable layer, connection layer, aluminum layer (separation layer), connection layer, CPP layers (non-extended polypropylene layers)" are stacked in sequence. Here, the uniaxially stretched PET layer constitutes the substrate layer, and the CPP layer constitutes the sealing layer.

The easily peelable layer in the above laminated structure is a layer obtained by applying a release agent.

In Fig. 7, an easy-to-peel layer is provided on any intermediate layer of the laminated structure to weaken the strength of the sheet to form an easy-to-break region. Where in the laminated structure the easily peelable layer is stacked can be changed as appropriate.

At a minimum, it is sufficient that a region of reduced intensity exists in the region shown in A. However, as shown in FIG. 7 , from the standpoint of easy tearing of the opening sheet and ease of manufacture, it is also possible to form a single belt that connects the two regions A.

(Easy-peelable layer is used as the sealing layer to form the easy-to-break area)

Although not shown in the drawings, an easy-peelable layer exhibiting easy-peelability (easy-peelability itself is generally known) may also be employed as the innermost sealing layer in the laminated structure. At this time, which form of cohesive peeling, interlayer peeling, and interfacial peeling is to be peeled can be appropriately determined in consideration of various conditions.

(Easy-to-break areas are formed by laser processing to form sewing machine needle holes on the substrate layer)

In the example of FIG. 8 , sewing machine eyelets 70 are formed on the outermost base material layer in the laminated structure, thereby weakening the strength of the sheet and forming an easy-to-break region.

The minimum here is also that it is sufficient if the region of weakened intensity exists in the region shown in A . However, as shown in FIG. 8 , from the viewpoint of easy tearing of the opening sheet and ease of manufacture, it is also possible to form a straight line connecting the two regions A. Moreover, the number of sewing machine needle eyes 70 may be only one row, or may be multiple rows. In the illustrated example, 3 rows of sewing machine needle eyes are formed. In addition, what is necessary is just to form the sewing machine needle eye 70 by an appropriate method other than using a laser beam.

In addition, in the present invention, as long as the strength of the sheet in the region A can be weakened, the specific configuration is not particularly limited, and appropriate configurations other than the above-mentioned configurations can also be adopted.

(outer package)

In FIG. 4 , first tear the adhesive seal sheet 13 for unsealing in the direction of arrow 1 to open the seal, and then, as shown by arrow 2, put the sealed package 10 into the outer package 50 and close the lid 52 ( FIG. 5 ).

The lower part 51 of the sealed packaging body 10 is combined with the cover portion 52 through a hinge to form the outer packaging body 50, and both are pressed toward the closing direction by a spring material not shown in the figure. That is, in FIG. 5 , the airtight package 10 is sandwiched between the lower portion 51 and the lid portion 52 in a crimped state.

The cover portion 52 has a door (movable panel) 55 . The door leaf 55 is integrally formed with the cover part 52, presses the inner sealed package body 10, and can be opened as shown in FIG. 20.

In summary, the door leaf 55 forming the movable panel is in the "closed position" in FIG. 5 and in the "open position" in FIG. 6 .

Since the opening 11a extends from the vicinity of the center of the wall surface of the package body 10 to its peripheral portion, when taking out the wet tissue 20, the wet tissue can be easily taken out by lifting its edge 20a.

After taking out the wet tissue 20, it is only necessary to close the door leaf 55, and the door leaf 55 presses the sealed package 10 to cover the opening 11a, so that the sealed state of the package 10 can be reproduced and maintained well.

That is, the troublesome operation of carefully pressing the adhesive sealing strip in order to reproduce the sealed state like the previous closed bag is no longer necessary.

In addition, the structure of the outer packaging body 50 is schematically shown in the drawings, but it is preferable to properly provide a mechanism for positioning the sealed packaging body 10 to be accommodated and the shape of the inner surface of the door leaf 55 so that the sealed packaging body 10 can be hermetically sealed. The entire opening 11a.

Claims (7)

1. sealed package, by comprising sealing layer and constituting the one side of sealing packing at least along the sheet material that specific direction has a substrate layer of directivity, simultaneously the sealing packing has in the upwardly extending perimeter in side of intersecting with specific direction, it is characterized in that, have on the direction of crosscut specific direction the otch that points to the same side with institute's measured length extension and two ends and specific direction substantially abreast on the above-mentioned surface, be attached to the Kaifeng adhesion seal strip on the otch, and at least near perimeter, be positioned at and easily break the zone on the imaginary line of drawing from the two ends of otch along specific direction.

2. sealed package as claimed in claim 1 is characterized in that, easy peel ply is set between substrate layer and sealing layer, to constitute the above-mentioned zone that easily breaks.

3. sealed package as claimed in claim 1 is characterized in that, adopts easy peel ply as sealing layer, to constitute the above-mentioned zone that easily breaks.

4. sealed package as claimed in claim 1 is characterized in that, forms cut channel on sheet material, to constitute the above-mentioned zone that easily breaks.

5. sealed package as claimed in claim 4 is characterized in that above-mentioned cut channel extends along perimeter.

6. sealed package as claimed in claim 4 is characterized in that, along the whole above-mentioned surface of above-mentioned imaginary line rip cutting, to form above-mentioned cut channel.

7. sealed package mechanism, this mechanism forms any one described sealed package in the claim 1～6 of opening and contains the external packing body that sealing packs with crimped status and constitute by removing above-mentioned Kaifeng with the adhesion seal strip, it is characterized in that, above-mentioned external packing body has the movable platen that can move between open position and off position, above-mentioned open position is the position of exposing seal-packed above-mentioned opening, and off position is the position of pushing down the sealing packing on every side that covers this opening.

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