JPH10278928A - Paper container for liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper container for liquid which is easy to disassemble for separate collection of resources wherein a top can be easily opened by a hand when the empty container after use is to be disassembled for separate collection of resources. SOLUTION: The paper container for liquid formed of a folded blank comprising a laminate board having a paperboard layer as a base layer and heat-fusion layers on a surface layer and a rear layer with a top shaped like a gabled top comprises a peelable vanrish coat 1 partially formed on one of sides from a center of a surface of a top seal A of a left panel 120 and a right panel 140 of the blank 100 and an easy-to-peel tape 2 adhered to a rear of a top seal A of a surface panel 130 and a rear panel 150.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to alcoholic beverages, fruit juice beverages,
The present invention relates to a liquid paper container used for liquid contents such as seasonings and kitchen detergents, and more particularly, to a liquid paper container in which a top seal portion is easily opened when an empty container after use is disassembled.

[0002]

2. Description of the Related Art Conventionally, a liquid paper container used for a liquid content is a laminated plate having a heat-sealing layer on a front surface layer and a back surface layer and a paperboard layer as a base layer, as shown in FIG. Thus, the back seal panel (110) in which the top seal portion (A), the top portion (B), the side wall portion (C), and the bottom portion (D) are successively provided via a fold line (indicated by a dashed line) from the top. ), Left panel (120), front panel (130), right panel (14
0), a blank (100) in which the back panel (150) is successively arranged side by side along a fold line (indicated by a dashed line) is pasted on a body pasting machine to produce a sleeve, and this sleeve is made of a liquid. The liquid was filled into a filling machine, the bottom was sealed by heat sealing, the liquid content was filled, and the top was sealed by heat sealing. As shown in FIG. 9B, this liquid paper container (10) has a top seal portion (A) and a top portion (B) having a gable roof shape and a side wall portion (C) having a square pole shape. If necessary, as shown in FIG. 9 (c), a plug (20) protrudes from an inclined plate at the top (B) of the front panel (130).

[0003]

Meanwhile, recently, the Containers and Packaging Recycling Law has been enforced due to the problem of environmental conservation, and the separate collection and reuse of empty containers after use has been promoted. However, the conventional liquid paper container described above is
When the used empty container is disassembled and separated and collected, it is sometimes difficult to disassemble the container by opening the top seal portion by hand because the sealing of the top seal portion by heat sealing is strong. . Further, in the case where the external plug is provided on the gable roof-shaped inclined plate, it is difficult to separate the plug because it is firmly welded so that the plug does not easily come off.

The present invention solves the above-mentioned problem of the conventional liquid paper container. When the used empty container is disassembled and separated and collected, the top seal portion can be easily opened by hand. Another object of the present invention is to provide a liquid paper container in which a stopper is easily removed.

[0005]

Means for Solving the Problems A first invention of the present invention is:
As shown in FIG. 1 (a), in a liquid paper container having a gable-roof top formed by folding and forming a blank made of a laminate having a paperboard layer as a base material layer and a heat-sealing layer on the front and back layers, A release varnish coating (1) is partially formed on one side from the center of the surface of the top seal portion (A) of the left panel (120) and the right panel (140) of the blank (100), and FIG. b) As shown in FIG.
A liquid paper container characterized in that an easy peel tape (2) (a tape having a multilayer structure capable of being easily peeled between layers) is attached to the back surface of the top seal portion (A) of the back panel (150). is there.

Next, a second invention of the present invention relates to a liquid having a gable-roof top formed by folding and forming a blank made of a laminated board having a paperboard layer as a base material layer and a heat-sealing layer on the front and back layers. In the paper container, as shown in FIG. 2A, either the left or right end or the left or right of the surface of the top seal portion (A) of the left panel (120) and the right panel (140) of the blank (100). A vertical half-cut (3) is formed at the end of the front panel (130), and as shown in FIG. A liquid paper container to which a tape (2) is attached.

Next, a third invention of the present invention is a liquid having a gable roof-type top formed by folding and forming a blank made of a laminate having a paperboard layer as a base material layer and a heat-sealing layer on the front and back layers. In the paper container, as shown in FIG. 3A, a release varnish coating film (1) is formed on one side of the surface of the top seal portion (A) of the left panel (120) and the right panel (140) of the blank (100). ) Is partially formed, and FIG.
As shown in (b), a liquid paper container characterized in that a vertical half cut (4) is formed in the center of the back surface of the top seal portion (A) of the front panel (130) and the back panel (150). is there.

Next, a fourth invention of the present invention is a liquid having a gable roof-type top formed by folding and forming a blank made of a laminate having a paperboard layer as a base material layer and a heat-sealing layer on the front and back layers. In the paper container, as shown in FIG. 4A, either the left or right end or the left or right of the surface of the top seal portion (A) of the left panel (120) and the right panel (140) of the blank (100). A vertical half cut (3) was formed at the end of the front panel (130), and a vertical half cut (4) was formed at the center of the back surface of the top seal portion (A) of the front panel (130) and the back panel (150). It is a liquid paper container characterized by the above-mentioned.

According to a fifth aspect of the present invention, a plug is externally attached to the gable roof-shaped inclined plate, and a half cut is formed on the outer periphery of the plug. A liquid paper container according to any one of the first to fourth inventions.

[0010] The liquid paper container having a gable-roof top at the top first has a top seal portion (A) at the top shown in FIG. Liquid paper container (10) opened by hand
Is to be dismantled. As shown in FIG. 8 (b), the way of opening the top seal portion is as follows: first, the top seal portion (120A) of the left panel and the top seal portion of the right panel where the surfaces are thermally fused to each other. (140
A) is peeled off as shown by the arrow. However, the front panel (13
0) and the height of the rear panel (150) are
In the case where the upper panel (A) and the right panel (140A) are designed to be higher, the upper portions of the front panel (130) and the rear panel (150) are adhered to each other. Next, as shown in FIG. 8C, the top seal portions (130A) of the front panel and the top seal portions (120A and 14A) of the left and right panels where the inner surfaces are heat-sealed.
0A) Further, the top seal portion (150A) of the back panel and the top seal portions (120A and 140A) of the left and right panels to which the inner surfaces are heat-sealed are peeled and opened as shown by arrows. is there.

[0011] A release varnish coating was partially formed on one side from the center of the surface of the top seal portion of the left panel and the right panel, and an easy peel tape was attached to the back surface of the top seal portion of the front panel and the back panel. The liquid paper container of the present invention manufactured by folding the blank first opens the top seal portion at the top after use. Since the peeling varnish coating film is partially formed on the attachment surface and the adhesive force is adjusted, it can be easily peeled off by hand. Next, the top seal portion of the front panel and the top seal portion of the left and right panels where the inner surfaces are heat-sealed, and the top seal portion and the left and right panel of the back panel where the inner surfaces are heat-sealed. Since the easy peel tape is interposed between the top seal portion and the top seal portion, the top seal portion can be easily opened by hand to open the top seal portion. When the height of the front panel (130) and the back panel (150) is designed higher than the left panel (120A) and the right panel (140A), the upper part of the front panel (130) and the back panel (150) is designed. Is adhered, but there is an easy peel tape between them,
It can be easily peeled off by hand.

In addition, vertical half cuts are formed at both left and right ends or at either left or right end of the surface of the top seal portion of the left panel and the right panel, and are formed on the back surface of the top seal portion of the front panel and the back panel. The liquid paper container of the present invention manufactured by folding a blank to which the easy peel tape is stuck is used to open the top seal portion of the top after use.First, the top seal portion of the left panel and the top seal portion of the right panel are opened. When peeling, the vertical half cut formed at the end of the heat-sealed surface became a trigger for peeling,
Since the paperboard layer causes delamination inside the half cut, it can be easily peeled off by hand. Next, when peeling off the top seal part of the front panel and the top seal part of the left and right panels, and the top seal part of the back panel and the top seal part of the left and right panels where the inner surfaces are heat-sealed. In addition, since the easy peel tape is interposed therebetween, it can be easily peeled off by hand to open the top seal portion. When the height of the front panel (130) and the back panel (150) is designed higher than the left panel (120A) and the right panel (140A), the upper part of the front panel (130) and the back panel (150) is designed. Is adhered, but there is an easy peel tape between them,
It can be easily peeled off by hand.

Further, a release varnish coating film is formed partially on one side of the top seal portion of the left panel and the right panel, and a vertical half cut is formed at the center of the back surface of the top seal portion of the front panel and the back panel. The liquid paper container of the present invention manufactured by folding the formed blank, to open the top seal portion of the top after use, first, when peeling the top seal portion of the left panel and the top seal portion of the right panel, Since the peeling varnish coating film is partially formed on the heat-sealing surface and the adhesive force is adjusted, it can be easily peeled off by hand. Next, the top seal portion and the left and right top seal portions of the front panel where the inner surfaces are thermally fused, and the top seal portion and the left and right top seal portions of the back panel where the inner surfaces are thermally fused. When peeling off the seal part, the vertical half cut provided at the center of the back surface of the top seal part of the front and back panels is a trigger for peeling, and the paperboard layer causes correlated peeling outside this half cut. The top seal portion can be easily peeled off by hand to open the top seal portion.

In addition, a vertical half-cut is formed at either the left or right end or the left or right end of the surface of the top seal portion of the left panel and the right panel, and the top seal portion of the front panel and the back panel is formed. The liquid paper container of the present invention manufactured by folding a blank formed with a vertical half cut at the center of the back surface, to open the top seal portion at the top after use, first, the top seal portion of the left panel and the right seal panel When peeling off the top seal part, the vertical half cut formed at the end of the heat-sealed surface is a trigger for peeling, and the paperboard layer causes delamination inside this half cut, so it can be easily done by hand. Can be peeled. Next, the top seal portion and the left and right top seal portions of the front panel where the inner surfaces are thermally fused, and the top seal portion and the left and right top seal portions of the back panel where the inner surfaces are thermally fused. When peeling off the seal part, the vertical half cut provided in the center of the back surface of the top seal part of the front and back panels triggers peeling, and the paperboard layer outside this half cut causes delamination. The top seal portion can be easily peeled off by hand to open the top seal portion.

The liquid paper container according to the present invention, which is manufactured by folding a blank having a half cut formed on the outer periphery of a spout protruding from the surface of the inclined plate at the top of the front panel by heat fusion, The inner paperboard layer is delaminated from the half cut formed around the perimeter, and the plug can be easily separated from the container and separated and collected easily by hand.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A blank for producing a liquid paper container according to the present invention is usually composed of a paperboard layer having a basis weight of 300 to 400 g / m ^{2 as} a base layer, a polyethylene of 15 to 30 μm as a surface layer and a back layer. A laminate having a heat-sealing layer of a thermoplastic resin such as polyethylene having a thickness of 40 to 70 μm is punched. Then, the sleeve is produced by pasting the back with a sack pasting machine, and the sleeve is made into a box by a filling machine, and at the same time, the contents are filled and sealed. In addition, as a configuration of the blank laminated plate, in consideration of easiness of disposal, a polyethylene layer (101) / paperboard shown in FIG. Layer (102) / polyethylene layer (10
3) / polyethylene terephthalate layer (104) / silicon oxide deposited thin film layer (105) / polyethylene layer (10
6) There are configurations and the like.

As shown in FIG. 1A, the blank (100) of the liquid paper container according to the embodiment of the present invention has a top seal portion (A) of a left panel (120) and a right panel (140). A release varnish coating (1) is partially formed on one side from the center of the surface, and as shown in FIG. 1 (b), the top seal portion (A) of the front panel (130) and the back panel (150) is formed. An easy peel tape (2) is attached to the back surface. The shape of the release varnish coating film (1) is not particularly limited, but may be a dot shape shown in FIG. 1A, a band shape shown in FIG. 7A, a slit shape shown in FIG. The size is determined so that the heat-sealed top seal has a heat-sealing strength that can be peeled off by hand. As the easy peel tape, for example, a laminated tape of a polyethylene / polyethylene terephthalate / polyethylene configuration is used, but the tape is not limited to this, and a tape having an adhesive strength by which a heat-sealed top seal can be delaminated by hand. Is used.

Next, as shown in FIG. 2A, left and right ends of the surface of the top seal portion (A) of the left panel (120) and the right panel (140) are formed as shown in FIG. A vertical half-cut (3) is formed at one of the ends or the left and right ends, and as shown in FIG. 2B, the top seal part (A) of the front panel (130) and the back panel (150) is formed. An easy peel tape (2) is attached to the back surface. The above-described half-cut position is formed at a position that triggers peeling when the heat-sealed top seal is peeled by hand, and the depth of the half-cut (3) is shown in FIG. As shown, blank (10
0) The paperboard layer (102) as the base material layer from the surface of the laminate
Reaches about half the thickness.

Next, the blank (10) of another embodiment is explained.
0) is the left side panel (12) as shown in FIG.
0) and the top seal part (A) of the right panel (140)
The release varnish coating (1) was partially formed on one side from the center of the surface of the front panel, and as shown in FIG.
0) and a vertical half cut (4) at the center of the back surface of the top seal portion (A) of the back panel (150). The shape of the release varnish coating film (1) is not particularly limited, but may be a dot shape shown in FIG.
There are a band shape shown in (a) and a slit shape shown in FIG. 7 (b), and the size is determined so that the heat-sealed top seal portion has a heat-sealing strength that can be peeled off by hand. The positions of the half cuts (4) are the top seal portion of the front panel and the top seal portion of the left and right panels where the inner surfaces are heat-sealed, and the back surface where the inner surfaces are heat-sealed. When peeling off the top seal part of the panel and the top seal parts of the left and right panels, it is formed at a position that triggers peeling. Further, a horizontal half cut (5) may be provided at a position slightly inside the outer periphery of the back surface of the top seal portion (A) of the front panel (130) and the back panel (150). By providing the half cut (5), it is not necessary to break the heat sealing layer when peeling, and the peeling is performed along the half cut (5), so that the peeling becomes easier. Also. Front panel (13
0) and the height of the rear panel (150) are
0A) and the right panel (140A), the front panel (130A) and the back panel (150A).
Since it is formed at a position that triggers peeling when the adhesive between the back surfaces of A) is peeled by hand, it can be easily peeled by hand. Half cut (3,4
The depth of 5) is, as shown in FIG.
The paperboard layer (10)
It reaches about half the thickness of 2).

Next, the blank (10) of another embodiment is described.
0) is the left side panel (12) as shown in FIG.
0) and the top seal part (A) of the right panel (140)
A vertical half-cut (3) is formed at both left and right ends or one of the left and right ends of the surface of the front panel, and as shown in FIG. 4B, the top of the front panel (130) and the back panel (150) are formed. A vertical half cut (4) is formed at the center of the back surface of the seal portion (A). The position of the above-mentioned half cut (3) is formed at a position that triggers peeling when the thermally fused top seal portion is peeled by hand. The position of the half cut (4) is determined by the top seal portion and the left and right top seal portions of the front panel where the inner surfaces are heat-sealed, and the back panel where the inner surfaces are heat-sealed. When the top seal portion is separated from the top seal portions of the left and right panels, the top seal portion is formed at a position that triggers the separation. Further, horizontal half cuts (5) may be provided at both upper and lower ends of the surface of the top seal portion (A) of the left panel (120) and the right panel (140). By providing the half cut (5), it is not necessary to break the heat sealing layer when peeling, and the peeling is performed along the half cut (5), so that the peeling becomes easier. In addition, the front panel (13
0) and a half cut (5) may be provided at the lower part of the back surface of the top seal portion (A) of the back panel (150). By providing the half cut (5), it is not necessary to break the heat-sealing layer when peeling, and the peeling is performed along the half cut (5), so that the peeling becomes easier. As shown in FIG. 6, the depth of the half cuts (3, 4, 5) reaches about half the thickness of the paperboard layer (102) as the base material layer from the front or back surface of the laminate of the blank (100). Things.

The liquid paper container (10) of the present invention shown in FIG. 5 (c) is an embodiment in which a plug (20) is externally attached to a gable roof-shaped top inclined plate and protruded. This blank (100) is, for example, as shown in FIG. 5A, an easy peel tape (2) on the back surface of the top seal portion (A) of the front panel (130) and the back panel (150).
And the front panel (13) as shown in FIG.
The half cut (3) is formed on the outer periphery of the plug that protrudes from the surface of the inclined plate at the top (B) of (0). The depth of the half cut reaches about half the thickness of the paperboard layer from the surface. In the liquid paper container shown in FIGS. 1 to 4 described above, similarly, a plug may be externally attached to the gabled roof-shaped inclined plate, and a half cut may be formed on the outer periphery of the plug.

In any of the above-described liquid paper containers according to the embodiments of the present invention, the heat-sealed top seal portion can be easily opened by hand, and the externally attached plug is removed from the container by hand. I was able to.

[0023]

According to the liquid paper container of the present invention, the top seal closed by heat sealing of the used empty container can be easily opened by hand when the disposal process is discarded, and the container can be disassembled.

Further, the plug externally attached to the inclined plate at the top can be easily removed from the container by hand when discarding, and can be collected separately.

[Brief description of the drawings]

FIG. 1A is a partially developed plan view of a blank showing a surface state of a top seal portion of a liquid paper container according to an embodiment of the present invention, and FIG. 1B is a plan view of a back surface of the top seal portion. It is a partial exploded plan view of a blank showing a state.

FIG. 2A is a partially developed plan view of a blank showing a state of a surface of a top seal portion of a liquid paper container according to another embodiment of the present invention, and FIG. FIG. 6 is a partially developed plan view of a blank showing a state of a back surface.

FIG. 3A is a partially developed plan view of a blank showing a surface state of a top seal portion of a liquid paper container according to another embodiment of the present invention, and FIG. FIG. 6 is a partially developed plan view of a blank showing a state of a back surface.

FIG. 4A is a partially developed plan view of a blank showing a surface state of a top seal portion of a liquid paper container according to another embodiment of the present invention, and FIG. FIG. 6 is a partially developed plan view of a blank showing a state of a back surface.

5A is a partially developed plan view of a blank showing a state of a back surface of a top seal portion of a liquid paper container according to another embodiment of the present invention, and FIG. 5B is a plan view of a top surface of the blank. It is a partial development top view of a blank showing a state, and (c) is a perspective view showing appearance of a container.

FIG. 6 is a cross-sectional view of a blank where a half cut is formed.

FIGS. 7A and 7B are partially developed plan views of a blank of a liquid paper container according to another embodiment of the present invention in which the shape of a release varnish coating film formed on a top seal portion is different.

FIGS. 8A and 8B are explanatory diagrams showing stages of opening of the top seal portion, wherein FIG. 8A is before opening, and FIG.
(C) is the place where it opened.

9A is an exploded plan view of a blank of a conventional example of a liquid paper container, FIG. 9B is a perspective view showing the appearance of an example of the container, and FIG. It is a perspective view showing the appearance of an example of a container in which a stopper is projected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Release varnish coating film 2 ... Easy peel tape 3, 4, 5 ... Half cut 10 ... Liquid paper container 20 ... Plug 100 ... Blank 101, 103, 106 ... Polyethylene layer 102 ... Paperboard Layer 104: Polyethylene terephthalate layer 105: Silicon oxide deposited thin film layer 110: Back seal panel 120: Left panel 130: Front panel 140: Right panel 150: Back panel A: Top seal part B: Top C: Side wall D: Bottom

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Masao Tsuruzaki, Inventor Printing Co., Ltd. 1-5-1, Taito, Taito-ku, Tokyo (72) Inventor Takashi Takashi 1-15-1, Taito, Taito-ku, Tokyo Letterpress In Printing Co., Ltd. (72) Inventor Hirofumi Kawai 1-5-1, Taito, Taito-ku, Tokyo

Claims (5)

[Claims] 1. A liquid paper container having a gable-roof top formed by folding and forming a blank made of a laminated board having a paperboard layer as a base material layer and having a heat-sealing layer on a front surface layer and a back surface layer. A release varnish coating is partially formed on one side from the center of the surface of the top seal portion of the right panel, and an easy peel tape is attached to the back surface of the top seal portion of the front panel and the back panel. Liquid paper container. 2. A liquid paper container having a gable-roof top formed by folding and forming a blank made of a laminated board having a paperboard layer as a base material layer and a heat-sealing layer on a front surface layer and a back surface layer. Form a vertical half cut at either the left or right end or the left or right end of the surface of the top seal part of the right panel, and attach the easy peel tape to the back of the top seal part of the front panel and back panel A liquid paper container characterized by the following. 3. A liquid paper container having a gable-roof top formed by folding and forming a blank made of a laminated board having a paperboard layer as a base material layer and having a heat-sealing layer on a front surface layer and a back surface layer. A release varnish coating film is partially formed on one side of the surface of the top seal portion of the right panel, and a vertical half cut is formed in the center of the back surface of the top seal portion of the front panel and the back panel. Liquid paper container. 4. A liquid paper container having a gable-roof top formed by folding and forming a blank made of a laminated board having a paperboard layer as a base material layer and having a heat-sealing layer on a front surface layer and a back surface layer. A vertical half-cut is formed at either the left or right end or the left or right end of the surface of the top seal of the right panel, and a vertical half-cut is formed at the center of the back surface of the top seal of the front panel and the back panel. A liquid paper container characterized by forming: 5. The liquid paper container according to claim 1, wherein a plug is externally attached to the gable roof-shaped inclined plate, and a half cut is formed on an outer periphery of the plug.