JP7393074B2 - resealable packaging supplies - Google Patents

Description

TECHNICAL FIELD The present invention relates to a packaging product that can be repeatedly sealed in which a take-out opening provided in a film is sealed with an adhesive label.

There is a growing demand for packaging containers that can be sealed and used repeatedly to prevent drying and deterioration. In particular, containers whose openings are sealed with adhesive labels maintain a high degree of airtightness even after repeated opening and closing, making them suitable for wet tissues, facial paper, makeup removers, facial masks, etc. , suitable for airtight storage of contents containing a large amount of moisture.

A conventional packaging container using an adhesive label will be described with reference to FIG. FIG. 4 is a perspective view showing a conventional packaging bag, in which (a) shows the bag when it is disassembled, (b) shows the bag when it is distributed, and (c) shows the bag when it is opened.

As shown in FIG. 4(a), the packaging bag 1 according to the conventional example is formed by forming a single film 4 into a bag shape. On one side of this film 4, a cut line 6 for forming an outlet is made using a micro-perforation machine or the like, and an adhesive label 5 with an adhesive layer provided on the entire surface of one side is pasted (Fig. 4(b)). As shown in FIGS. 4(a) and 4(b), the adhesive label 5 is attached so as to completely cover the area inside the cut line 6 provided on the film 4. The adhesive label 5 may have characters such as "OPEN" printed on the handle and a product name printed on the center of the label.

As shown in FIG. 4(c), when the adhesive label 5 is peeled off, the inner area 4a is stuck to the adhesive layer 5a of the adhesive label 5 by the adhesive, so the inner area 4a is removed along the cut line 6. It is cut out and the outlet 3 is formed (unsealed) in this part. It is guaranteed to be unopened until the inner area 4a is cut out.

In the case of such a packaging bag 1, there is a possibility that the adhesive component of the adhesive label 5 may pass through the fine holes along the cut line 6 and mix into the contents 2. In addition, the inner region 4a prevents the content from coming into contact with the adhesive layer 5a behind it, but since the diameter of the inner region 4a and the diameter of the outlet 3 are the same, misalignment during resealing may cause The adhesive layer 5a of the adhesive label and dust attached thereto easily come into contact with the contents 2. Further, if the adhesive 9 is left behind on the periphery of the outlet 3, it may come into contact with the contents 2 when the contents 2 are removed. Contamination of the contents by these causes hygienic problems. Such containers are unsuitable for containing contents that require particularly high sanitary control, such as foods.

In order to solve the above-mentioned problems, the present inventors have proposed a packaging product that is equipped with a concealing film that is slightly larger than the take-out opening and that hides the adhesive layer of the adhesive label (patented). (See Reference 1).

Utility model registration No. 3206272

In this technique, the concealing film, which is one size larger than the outlet, prevents the contents from coming into contact with the adhesive and the like, thereby preventing contamination of the contents. However, the virginity of the packaging (confirmation that it has not been opened) was not considered, and there was room for improvement in this respect.

The present invention was made in view of the above, and an object of the present invention is to realize a packaging product having an adhesive label that can prevent contamination of contents while ensuring the virginity of the packaging.

The resealable packaging product according to the present invention includes a film provided with a cut line for forming a take-out opening, and an adhesive label removably attached to the film. On one side of the adhesive label, an adhesive layer is provided along its outer periphery with an adhesive applied thereto, and the central portion is a non-adhesive layer where no adhesive is applied. The non-adhesive layer is larger than the inner area of the score line, the adhesive label is applied to the film with the non-adhesive layer completely covering the inner area, and the adhesive layer and the inner area are not adhered. . The adhesive label is provided with a handle, and the distance between the inner region and the adhesive layer on the handle side is 50% or more greater than the distance between the inner region and the adhesive layer on the opposite side from the handle, The area of the non-adhesive layer on the side closer to the handle than the inner region is larger than the area of the non-adhesive layer on the side opposite to the handle than the inner region.

An adhesive label is affixed to a portion in contact with the inner region of the cut line that serves as an ejection opening and a portion surrounding it so that a non-adhesive layer in which no adhesive is present is in contact. Therefore, contact between the contents and the adhesive is prevented, and the adhesive does not adhere to the periphery of the outlet, and contact between the contents and the adhesive at this portion is also prevented. In addition, on the handle side where contact is likely to occur, the distance between the inner region and the adhesive layer on the handle side is 50% or more larger than the distance between the inner region and the adhesive layer on the opposite side of the handle, and the inner region The area of the non-adhesive layer on the side of the handle is larger than the area of the non-adhesive layer on the opposite side of the handle than the inner region, so the distance between the inner region and the adhesive layer is greater than the distance between the adhesive and the contents. Contact with objects can be effectively prevented.

For example, if the inner region and the adhesive label are bonded with adhesive, the adhesive in this area may have an adverse effect on the contents. Furthermore, it is technically difficult to bond the inner region and the adhesive label by heat sealing, solvent sealing, etc. without affecting the adhesive. In the structure of the present invention in which the area inside the score line and the adhesive label are not bonded at all, the area inside the score line must be removed after opening the package, but it is easy to process and may adversely affect the contents. do not have.

In addition, since the score line can be used to confirm that the package has not been opened and that it has not been broken, virginity is ensured. The score line is preferably formed using a micro-perforation machine or the like.

The above-mentioned packaging supplies may be of any type as long as they can close the outlet provided in the film, such as packaging bags made of a single film shaped into a bag, and packaging products made of a single film shaped like a box. This includes packaging boxes made of Furthermore, a single film for sealing an opening provided in a tray, box, etc., and a tray or box sealed with the film are also included in the above-mentioned packaging supplies.

The width of the adhesive layer is preferably 5 to 20 mm, more preferably 7 to 16 mm, and still more preferably 9 to 12 mm, in view of the balance between adhesive performance and cost.

As the distance between the cut line and the adhesive layer increases, contact between the contents and the adhesive layer can be prevented. Furthermore, if the distance between the cut line and the adhesive layer is too large, there is a possibility that the design of the size and arrangement of the outlet may be hindered. Therefore, the distance between the cut line and the adhesive layer may be designed by determining the ease of contact between the content and the adhesive layer based on the type and size of the content.

The distance (shortest distance) between the cut line and the adhesive layer is preferably 4 mm or more, more preferably 6 mm or more, and 8 mm or more in order to further prevent contact between the contents and the adhesive layer. It is more preferable that

In addition, increasing the distance between the cut line and the adhesive layer will further prevent contact between the contents and the adhesive layer, but this will lead to an increase in the label area and total adhesive area, resulting in higher costs. Become. Therefore, the distance (shortest distance) between the cut line and the adhesive layer is preferably 30 mm or less, more preferably 25 mm or less, and even more preferably 20 mm or less.

As the film, a wide range of general-purpose plastic packaging films can be used. For example, plastic films for food packaging are required to protect the contents (protection from physical and chemical stimuli, maintain freshness), and for this purpose, mechanical strength, gas barrier properties, heat sealing strength, and compatibility with adhesives are required. (Ease of adhesion, little adhesive residue), etc. Since there is no material that can meet these requirements alone, it is preferable to use a multilayer film that combines the characteristics of each material.

Multilayer films are mainly made by coextrusion or lamination. In the case of laminates, oriented polypropylene (OPP), polyethylene terephthalate (PET), oriented nylon (ON), etc. are used. Among the above, the base film is preferably made of nylon.

The thickness of the film is not particularly limited, and may be appropriately set depending on the required sealing properties, gas barrier properties, strength, etc. For example, it can be set to 50 to 1000 μm.

A general-purpose plastic film for packaging can be used as the base material of the above-mentioned adhesive label, and the same material as the above-mentioned film may be used. On one side of the base material, an adhesive (adhesive) that can be repeatedly attached and detached is applied to form an adhesive layer, and the adhesive label becomes a lid that can repeatedly seal the outlet.

When a film laminated with a layer of metal such as aluminum is used as a base material for a film or an adhesive label, light-shielding properties, product concealment properties, and gas barrier properties can be improved. In addition, it has higher shape stability than plastic film, and can improve the strength of packaging products and facilitate the removal of separated inner regions.

Adhesives include natural adhesives, synthetic adhesives (acrylic resin adhesives, acrylic resin emulsion adhesives, α-olefin adhesives, ether cellulose, ethylene-vinyl acetate resin emulsion adhesives, ethylene -Vinyl acetate resin hot melt adhesive, vinyl acetate resin emulsion adhesive, silicone adhesive), etc. can be used. Among these, EVa (ethylene-vinyl acetate copolymer resin) emulsion is preferred.

The thickness of the adhesive label is not particularly limited, similar to the above film. For example, it can be set to 50 to 1000 μm.

Further, the adhesive label may have a structure in which a cut is provided as a stopper for peeling, or may have a structure in which the entire adhesive label can be completely peeled off without providing a cut. Furthermore, a handle may be provided to facilitate peeling.

According to the present invention, it is possible to obtain a highly hygienic, safe, and resealable packaging product that ensures virginity and is unlikely to cause contamination of the contents due to contact with an adhesive.

FIG. 1 is a diagram showing a packaging bag according to Embodiment 1, in which (a) is an exploded perspective view, (b) is a perspective view of the packaging bag during distribution, and (c) is a back view of the adhesive label. , (d) is a perspective view of the packaging bag when the adhesive label is peeled off, and (e) is a perspective view of the packaging bag when it is opened. FIG. 2 is a diagram showing a packaging container according to Embodiment 2, in which (a) is an exploded perspective view, (b) is a perspective view of the packaging container during distribution, and (c) is a back view of the adhesive label. , (d) is a perspective view of the packaging container when the adhesive label is peeled off, and (e) is a perspective view of the packaging container when the packaging container is opened. FIGS. 3(a) to 3(e) are plan perspective views illustrating the size relationship between the adhesive layer and non-adhesive layer of the adhesive label and the outlet. FIG. 4 is a perspective view showing a conventional packaging bag, in which (a) shows the bag when it is disassembled, (b) shows the bag when it is distributed, and (c) shows the bag when it is opened.

Embodiments of the present invention will be described using the drawings. Identical parts in each figure are given the same reference numerals and their descriptions will not be repeated.

(Embodiment 1)
FIG. 1 is a diagram showing a packaging bag according to Embodiment 1, in which (a) is an exploded perspective view, (b) is a perspective view of the packaging bag during distribution, and (c) is a back view of the adhesive label. , (d) is a perspective view of the packaging bag when the adhesive label is peeled off, and (e) is a perspective view of the packaging bag when it is opened.

As shown in FIG. 1(a), the packaging bag 1 has a single film 4 formed into a bag shape, and stores the contents 2 in the storage space inside the bag. A cut line 6 is provided on one surface of the film 4 to form an opening for taking out the contents 2. The adhesive label 5 seals the outlet cut out along the cut line 6. The packaging bag 1 may have a structure in which a plastic sheet or the like is laminated only around the portion forming the take-out opening to enhance strength and peeling/readhesion of the adhesive label.

As shown in FIG. 1(c), an adhesive layer 5a coated with an adhesive is provided along the outer periphery on one side (the side facing the packaging bag) of the adhesive label 5, and the center portion is a non-adhesive layer 5b to which no adhesive is applied. Note that, like the non-adhesive layer 5b, no adhesive is applied to the handle (protrusion) 5c of this adhesive label 5. This non-adhesive layer 5b is formed to be larger than the inner area of the cut line 6, and the adhesive label 5 is attached to the film 4 so that the non-adhesive layer 5b completely covers the inner area 4a of the cut line 6. (See Figure 1(b)). The adhesive label 5 may have characters such as "OPEN" or a product name printed thereon.

As shown in FIG. 1(d), when the adhesive label 5 is peeled off by hand, the inner region 4a along the score line 6 is not adhered to the adhesive label, so the inner region 4a is removed along the score line 6. It won't be cut off.

As shown in FIG. 1(e), when the cut line is broken and the inner region 4a is cut out, a take-out port 3 is formed in the film 4, and the contents 2 can be taken out from the take-out port 3. It is possible to confirm whether the package is unopened or opened by checking whether the inner region 4a is cut out or not.

The film 4 and the adhesive label 5 are formed of a plastic film or a metal-plastic laminate film. A removable adhesive (adhesive resin) that can be repeatedly attached and detached is applied to the back surface of the adhesive label 5.

The effects of the present invention will be explained. As shown in FIG. 1(b), when the adhesive label 5 seals the area inside the score line 6, the non-adhesive layer 5b blocks contact between the content 2 and the adhesive layer 5a of the adhesive label 5. As a result, the adhesive component of the adhesive label 5 does not mix into the contents 2 via the cut line 6.

After opening the package at the cut line and using the contents 2, the adhesive label 5 is directly attached to one side 4a of the film 4 and returned to its original position, whereby the adhesive layer 5a is activated again by pressure sensitivity. The remaining contents 2 are hermetically sealed. No matter how many times the adhesive label 5 is attached and removed, the non-adhesive layer 5b, which has a larger area than the outlet 3 (inner area 4a) of the adhesive label 5, completely blocks the outlet 3, so that the contents 2 are not removed. The components of the adhesive of the adhesive label 5 will not be mixed therein.

Moreover, since the non-adhesive layer 5b has an area one size larger than the outlet 3, the adhesive does not adhere to the film 4 around the edge of the outlet 3 as well. Therefore, no matter how many times the adhesive label 5 is attached and detached, the adhesive of the adhesive label 5 or the dust trapped there will not be mixed into the contents 2, and when the contents are taken out, Contact with adhesives is also less likely to occur. Therefore, the packaging product is excellent in hygiene.

The contents 2 are not particularly limited, and may include, for example, wet tissues, meat, processed meat, seafood, foodstuffs such as sweets and bread, cosmetics such as packs, face masks, body paper, and facial paper.

(Embodiment 2)
In this embodiment, an example will be described in which the present invention is applied to a packaging container having a structure in which the opening of a tray is sealed with a film instead of the packaging bag in Embodiment 1. Other than this, it is the same as the packaging bag of Embodiment 1, so in FIG. 2, the same parts are given the same reference numerals, and the description thereof will not be repeated.

FIG. 2 is a diagram showing a packaging container according to Embodiment 2, in which (a) is an exploded perspective view, (b) is a perspective view of the packaging container during distribution, and (c) is a back view of the adhesive label. , (d) is a perspective view of the packaging container when the adhesive label is peeled off, and (e) is a perspective view of the packaging container when the packaging container is opened.

As shown in FIG. 2(a), the packaging container according to the present embodiment includes a tray 7 that is the main body of the container, a film 4 that seals the opening at the top of the tray 7, and a take-out port provided in the film 4. A sealing adhesive label 5 is provided.

The tray 7 is not particularly limited, and any known plastic tray can be used. Depending on the type of contents, etc., the color (colored, transparent, etc.), shape (depth, uneven processing, etc.), and material (type, presence or absence of foaming, filler, etc.) of the tray may be appropriately selected.

The method of bonding the tray 7 and the film 4 is not particularly limited, and adhesives, heat seals, solvent seals, and the like can be used, but bonding with an adhesive is preferable because different materials can be bonded with high strength.

As shown in FIG. 2(c), the adhesive label 5 has a handle 5c and a non-adhesive layer 5b on the back surface (film side surface) with adhesive applied along the outer edge. A chemical layer 5a is formed.

This adhesive bonds the film 4 and the adhesive label. The state in which all the elements are bonded is the state shown in FIG. 2(b).

As shown in FIG. 2(d), when the adhesive label 5 is peeled off by hand, the area inside the score line 6 and the adhesive label are not adhered to each other, so the break line 6 does not break. It is possible to confirm whether the package is unopened by checking whether or not there is a break along the cut line 6.

As shown in FIG. 2(e), when the cut line is broken and the inner region thereof is cut out, a take-out port 3 is formed in the film 4, and the contents 2 can be taken out from the take-out port 3.

By constructing the tray 7 with an opening and a film that covers this opening, the contents of the rigid tray are better protected, and the contents 2 can be easily accommodated, so that the contents that can be accommodated are The number of types can be increased. Note that instead of the tray with the entire top open, a box or the like with a part or all of the top open may be used, and the opening may be sealed with a film and an adhesive label.

For example, when an aluminum laminate film is used as the film, effects such as light shielding and improved gas barrier properties due to the aluminum layer can be obtained. In this case, it is preferable to use an aluminum laminate film for the adhesive label to ensure light shielding, gas barrier, etc. also at the outlet. On the other hand, if a transparent film is used, the contents can be visually checked, which is convenient for checking the size and amount of the contents. In this case, it is preferable to use a transparent film also for the adhesive label.

Further, the light shielding properties, gas barrier properties, etc. of the tray may be the same as or different from those of the film. The light-shielding properties, gas barrier properties, etc. of the tray may be controlled by the pigments, additives, etc. contained therein.

(Embodiment 3)
In this embodiment, the overlapping relationship of the adhesive label, the adhesive layer, the non-adhesive layer, the size and arrangement of the outlet, etc. will be explained using FIG. 3. FIGS. 3A to 3E are perspective plan views illustrating the size relationship between the adhesive layer and non-adhesive layer of the adhesive label and the outlet.

The planar shapes of the outlet 3, the non-adhesive layer 5b, and the adhesive label 5 are not particularly limited.

The shape of the adhesive label 5 includes a track shape, an elliptical shape (FIG. 3(d)), a rectangular shape with rounded corners (FIGS. 3(a) to (c)), and a shape with a handle attached to these shapes (FIG. 3(d)). e)) is preferred. It is preferable that no adhesive is applied to the handle 5c so as not to stain the hands with the adhesive. In other words, the outer boundary line of the adhesive layer 5a provided along the outer periphery of the adhesive label 5 becomes the outline of the adhesive label 5 excluding the handle if there is a handle (see FIG. 3). e)), if there is no handle, it matches the outline of the adhesive label 5 (FIGS. 3(a) to (d)).

The non-adhesive layer 5b may have any shape, but as shown in FIGS. It is preferable that the shape of the adhesive label 5 is substantially similar to that of the adhesive label 5. The width of the adhesive layer 5a (in case the width changes, its minimum value) is sufficient as long as it can perform the adhesive function, and is preferably 5 mm or more, more preferably 7 mm or more, and still more preferably 9 mm or more. . On the other hand, if the width of the adhesive layer 5a is large, the cost increases accordingly, so the width (minimum value) of the adhesive layer 5a is preferably 20 mm or less, more preferably 16 mm or less, and still more preferably 12 mm or less.

Furthermore, although the handle may be provided at any position, it is preferably provided at the end along the longitudinal direction of the adhesive label, as shown in FIG. 3(e).

The outlet 3 may have any shape as long as it makes it easy to take out the contents. The shortest distance between the outlet 3 and the adhesive layer 5a is sufficient as long as it can prevent contact between the adhesive and the contents, and is preferably 4 mm or more, more preferably 6 mm or more, and still more preferably 8 mm or more. shall be. As shown in FIGS. 3(b) and 3(d), if the distance between the outlet 3 and the adhesive layer 5a changes (the shape of the non-adhesive layer 5b and the outlet 3 are not similar), in the part where the distance is large, Contact between the adhesive and the contents can be further prevented.

In addition, when using an adhesive label with a handle 5c as shown in FIG. The structure is designed to efficiently prevent contact with the contents. In this case, the above-mentioned distance L2 may be configured to be the minimum necessary because adhesive slippage is less likely to occur in the vicinity of the outlet on the opposite side from the handle. For example, L2 may be set at about 2 mm or 3 mm, taking into account deviations during manufacturing.

Further, the distance L1 between the outlet on the handle side and the adhesive layer is preferably 50% or more, more preferably 100% or more, than the distance L2 between the outlet on the side opposite to the handle and the adhesive layer. More preferably, it is increased by 200% or more.

According to the resealable packaging product of the present invention, contact between the inside of the contents and the adhesive is significantly prevented, so it is hygienic. Furthermore, virginity is ensured, so you can use it with confidence. Therefore, it has great industrial significance.

1 Packaging bag 2 Contents 3 Output port 4 Film 4a Inner region of the cut line 5 Adhesive label 5a Adhesive layer 5b Non-adhesive layer 5c Handle 6 Cut line 7 Tray 9 Adhesive left behind

Claims (4)

A film provided with a cut line for forming an outlet,
an adhesive label removably attached to the film and provided with a handle;
One side of the adhesive label is provided with an adhesive layer coated with adhesive along its outer periphery, and the central part thereof is a non-adhesive layer where no adhesive is coated,
The non-adhesive layer is larger than the area inside the cut line,
the adhesive label is affixed to the film with the non-adhesive layer completely covering the inner region;
the non-adhesive layer and the inner region are not bonded;
The distance between the inner region and the adhesive layer on the side of the handle is 50% or more larger than the distance between the inner region and the adhesive layer on the side opposite to the handle,
The area of the non-adhesive layer closer to the handle than the inner region is larger than the area of the non-adhesive layer on the opposite side of the handle than the inner region.
A resealable packaging product characterized by: The resealable packaging article according to claim 1,
The packaging product further includes a tray having an opening,
The film is provided to close the opening,
A resealable packaging product characterized by: The resealable packaging article according to claim 1 or 2,
The width of the adhesive layer is 5 to 20 mm,
The distance between the cut line and the adhesive layer is 4 mm or more,
A resealable packaging product characterized by: The resealable packaging product according to any one of claims 1 to 3,
The film is a laminate of metal and plastic.
A resealable packaging product characterized by:

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