JP5067960B2 - Web corner paper container - Google Patents

Description

  The present invention belongs to the technical field of paper containers made of paperboard, and particularly relates to a web corner type paper container having a liquid leakage prevention function corresponding to recycling.

  Conventionally, in order to prevent leakage of oil, seasonings, gravy, etc. from four corners as a paper container for cooked food with sauce, gravy, sauces, etc. A web corner type paper container that is folded and bonded to the outer surface of the side plate is used.

  In addition, a laminate comprising a paperboard and a resin coated on its inner surface or a resin film such as laminated polyethylene for foods with seasonings and oils, foods that are boiled, or frozen foods cooked in a microwave oven In order to prevent the contents from coming into direct contact with the paperboard, by providing such a resin film for preventing dirt.

  By the way, in recent years, environmental problems have become a major problem, and awareness of protecting the natural environment is increasing. In particular, the problem of waste disposal is large, and there is a demand for resource saving by using as few materials as possible and measures such as recycling, which is the reuse of resources. Against this background, when discarding containers used for packaging, it is desirable to separate materials into paper and plastic as much as possible.

In response to this environmental problem, the to recycle the separated paper, becomes pasted to the entire surface of the tree fat film peelable state paperboard is separated into paper and plastics upon disposal of paper container A paper container using a laminate as a material has been proposed. However, even in such a form of paper container, consumers often discard the resin film without tearing it off after eating the food. Therefore, a web corner type paper container using a laminate in which the resin film is partially bonded to the inner surface of the paper so that the consumer can peel off the peelable resin film has been proposed (for example, Patent Documents). 1).
JP 2001-328622 A

  However, in the above-described web corner type paper container, the process of attaching the resin film to the inner surface of the paper while partially registering the necessary portions is extremely difficult to process, and therefore the cost tends to increase. Therefore, it is preferable that the resin film is bonded to the inner surface of the paper at the raw material stage.However, in this case, the bonded resin film is difficult to peel off. Because of the close contact, it was necessary to perform detailed operations such as creating a chance to separate the two while raising their nails. For this reason, there is a method of making a peeling start part by making a cut in a layer other than the resin film at the peeling start part, and removing the part other than the resin film as a trigger, but leaving only the thin resin film It is difficult to make cuts only in other portions, and if it is made too strong, the resin film will be cut, and if it is weak, problems such as paper will remain.

Furthermore, since there is no fixed method for peeling off a resin film that can be peeled off after use, it is difficult to understand the chance to start peeling, and depending on how it is peeled off, the resin film may be cut off in the middle and less likely to fail to peel off. There wasn't. In particular, in the web corner type paper container, since the four corners are folded outward and bonded to the outer surface of the side plate, they are often failed to peel off even if they are peeled off successfully. For this reason, there is a case where the resin film is peeled off after the web corner type paper container is flattened, and in such a case, a problem such as a dirty hand occurs.

  The present invention has been made in view of such problems, and the object of the present invention is to make it possible to easily and reliably peel off the resin film on the inner surface in an assembled state. It is to provide a paper pattern container.

In order to achieve the above object, the web corner type paper container of the present invention is made of a laminate in which a resin film is bonded to the entire surface of the paperboard in a peelable state, and is assembled with the film side as an inner surface. A side plate stands up through a fold line at each side, a fold piece is connected to each side of the side plate through a fold line, and the adjacent fold pieces extend radially outward from the corners of the bottom plate. A web corner type paper container in which web corner portions connected via lines are formed, and each web corner portion is bonded to the outside of the side plate, except for the side plate bonded to the outer surface. and upper and lower sides are the cover plate to the upper side of the side plate became direction direction substantially orthogonal eyes paperboard is continuously provided, the eyes and substantially parallel edges of the paper at the cover plate, a resin film As a trigger for start, and is characterized in that the knob portion of the peeling start portion to be formed at a break line placed in a layer other than the resin film is provided.
Alternatively, a laminated body in which a resin film is bonded to the entire surface of the paperboard is used as a material, the film side is assembled as an inner surface, and the side plate stands on each side of the bottom plate via a folding line. Folding pieces are connected to each other on both sides of the web, and adjacent webs are connected via radial folding lines that extend radially outward from the corners of the bottom plate. The web corner type paper container in which each web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface, and the upper and lower sides are substantially parallel to the direction of the paperboard eyes. A lid plate is connected to the upper side of the side plate, and it is placed in a layer other than the resin film as a trigger to start peeling off the resin film at the edge of the lid plate that is substantially parallel to the paper eye. Knob as peeling start portion to be formed at a break line is characterized by being provided.

In order to achieve the same object, the web corner paper container of the present invention is made of a laminate in which a resin film is bonded to the entire surface of the paperboard in a peelable state, and is assembled with the film side as the inner surface. Side plates stand up on each side of the side plate through fold lines, fold pieces are connected to both sides of each side plate through fold lines, and adjacent fold pieces extend radially outward from the corners of the bottom plate. A web corner type paper container in which web corner portions connected via radial folding lines are formed, and each web corner portion is bonded to the outside of the side plate, and the side plate is bonded to the outer surface. except in and has a cover plate to the upper side of the side plate that became a direction vertical sides to a direction substantially perpendicular to the eye of the paperboard is continuously provided, substantially in the vicinity of parallel edges and paper eyes at the cover plate, a resin As a trigger for Irumu begin the peeling and is characterized in that pushing portion of the peeling start portion to be formed at a break line placed in a layer other than the resin film is provided.
Alternatively, a laminated body in which a resin film is bonded to the entire surface of the paperboard is used as a material, the film side is assembled as an inner surface, and the side plate stands on each side of the bottom plate via a folding line. Folding pieces are connected to each other on both sides of the web, and adjacent webs are connected via radial folding lines that extend radially outward from the corners of the bottom plate. The web corner type paper container in which each web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface, and the upper and lower sides are substantially parallel to the direction of the paperboard eyes. A cover plate is continuously provided on the upper side of the side plate, and in the vicinity of the edge of the cover plate that is substantially parallel to the paper eye, as a trigger for starting to peel off the resin film, a layer other than the resin film is provided. Pushing portion of the peeling start portion to be formed at a break line which is characterized by being provided.

  When the web corner type paper container of the present invention starts peeling of the resin film from the peeling start portion at the edge of the cover plate, the paper layer is not completely cut off at the cut line, and the resin film is peeled off. As a result, even if the paper peels off in the form of sticking to the resin film, the peeling from the peeling start part is performed against the eyes of the paper. The film is peeled off at the boundary surface, and after the start of peeling, only the resin film is pulled.When the resin film is peeled off at the side plate following the lid plate, the inner surface of the web corner is peeled off, thereby causing resistance at the corner. Since the force becomes small, the resin film can be easily and surely peeled without being cut all over.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  1 is a perspective view showing an example of a web corner type paper container according to the present invention, FIG. 2 is a perspective view showing the web corner type paper container of FIG. 1 opened, and FIG. 3 is a blank of the web corner type paper container shown in FIG. FIG. 4 is a partially enlarged sectional view of FIG.

The web corner type paper container A ₁ shown in FIG. 1 and FIG. 2 is assembled by using a laminated body in which a resin film is bonded to the entire surface of the paperboard in a peelable state as a material, and the film side as an inner surface. Its external shape is generally the same as that of a normal web corner paper container, and a pair of side plates 12 and 12 from one opposing side of the rectangular bottom plate 11 and a pair of side plates 13 and 13 from the other opposing side, respectively. A lid plate 16 is provided on the upper side of one side plate 12 of the pair of side plates 12 and 12 facing each other, and a flap piece 17 is provided on the upper side of the other side plate 12. Flap pieces 18 and 18 are provided on the other pair of side plates 13 and 13 that are connected to each other, and a locking projection 16a is provided near the tip of the cover plate 16 by a cut line. The flap piece 17 is formed with a slit 17a in which the locking projection 16a can be locked. Adjacent side plates 12 and 13 are connected to each other by a web corner portion W, and the web corner portion W is bonded to the outer surface of the side plates 13 and 13 adjacent to the side plate 12 on the lid plate 16 side. On the side opposite to the cover plate 16, they are fixed by being bonded to the outer surface of the side plate 12. The flap pieces 18 and 18 are not necessarily provided, but are preferably provided in order to improve shape retention.

Also, the web corner paper container A _1, the lid plate 16 is substantially perpendicular to the vertical sides direction of the eyes of the paperboard of the paper side plates 12 continuously provided (arrow). It should be noted that the term “substantially orthogonal” in the present invention includes the case of being accurately orthogonal. And as an opportunity for starting to peel off the resin film in the direction substantially orthogonal to the direction of the paper eye of the paper on the edge part of the cover plate 16, as a peeling start part for starting to peel off the bonded resin film This knob part P ₁ is provided, and this knob part P is formed by making a cut line p by a sewing machine blade in a layer other than the resin film. This “paper eye” is one of the characteristics of paper. That is, when paper is made by a paper machine, the fibers in the stock (pulp) are roughly aligned in the direction of flow on the paper machine, and the direction of the flow is referred to as the “paper eye direction”.

Here, the cut line p that defines the knob portion P ₁ is formed at the same time when a blank is punched out from a laminate in which the resin film is bonded to the entire surface of the paperboard. In this case, since the resin film is pulled and peeled later, it is ideal to insert a sewing machine blade or a cutting blade so as to exactly match the boundary between the resin film and the paper layer so as not to damage the resin film. However, it is difficult to accurately do this with a punching machine. If the resin film is not damaged, it is inevitable that the paper layer is not completely cut. If the paper layer is not completely cut in this way, when the resin film is pulled, the paper layer causes delamination and sticks to the film side. At this time, if the resin film is peeled in the same direction as the direction of the paper of the paperboard, the peeled paper layer is attached and the peeled portion becomes large. On the other hand, when the resin film is peeled in a direction substantially orthogonal to the direction of the paper of the paperboard, the paper layer is not peeled off immediately, and the separation is performed well.

The web corner paper container A ₁ shown in FIGS. 1 and 2 is assembled from the blank B ₁ shown in FIG. This blank B ₁ is produced by punching out a raw material of a laminate in which a resin film is bonded to the entire surface of the paperboard in a peelable state , and has a rectangular bottom plate as shown in the figure. 11, side plates 12 and 12 are connected to upper and lower opposing sides via fold lines a, and side plates 13 and 13 are connected to left and right opposing sides via fold lines b. Here, in the blank B ₁ , the upper and lower opposing fold lines a are substantially orthogonal to the direction of the paperboard paper eye (arrow direction), and the left and right opposing fold lines b are parallel to the paperboard paper eye direction. Designed to be in the direction.

In addition, triangular folding pieces 14 are continuously provided on both sides of the side plates 12 and 12 in the blank B ₁ via radial folding lines c, and on both sides of the side plate 13 via radial folding lines d. Triangular folding pieces 15 are continuously provided, adjacent folding pieces 14 and 15 are continuously provided by a radial folding line e, and a portion where the folding pieces 14 and 15 are continuously provided is a web corner portion W. ing. Further, a cover plate 16 is connected to the upper side of one side plate 12 of one pair of opposing side plates 12 and 12 via a fold line f, and the upper side of the other side plate 12 is connected to a fold line g. A flap piece 17 is provided continuously, and a flap piece 18 is provided on the outer side of the other pair of side plates 13 and 13 on the other side via a folding line h. A locking projection 16a is provided near the tip of the cover plate 16 by a cut line, and a slit 17a in which the locking projection 16a can be locked is formed in the flap piece 17. Further, as shown in the figure, the locking projection 16a is partitioned by an oblique fold line i that spreads outward, so that the portion to be picked by the finger is sufficiently larger than the protruding size from the cover plate 16, Easy to pick and lock. Further, the slit 17a has a curved incision so that the insertion of the locking convex portion 16a is smoother.

Then, in the blank B _1, is provided with a knob portion P ₁ of the peeling start portion for the middle of the side edges of the cover plate 16, it begins to peel off the resin film stuck. Therefore, the knob portion P ₁ is provided so that the direction in which the resin film starts to peel is in a direction substantially orthogonal to the direction of the paper eye of the paperboard (arrow direction). As shown in the partial enlarged cross-sectional view of FIG. 4, the knob P ₁ is formed by forming a cut line p by a sewing blade in a semicircular shape in a layer other than the resin film F. By providing such a knob P ₁ , layers other than the resin film F are broken at the cut line p, and the resin film F can be peeled off. The cut line p can be entered with a cutting blade in addition to the sewing machine blade.

FIG. 5 is an explanatory view showing a procedure for peeling the resin film F from the web corner paper container A ₁ shown in FIGS. 1 and 2, and the resin film F is peeled in the order of the numbers in the figure. is there.

The web corner type paper container A ₁ starts to peel off the resin film from the knob P ₁ while remaining in the container shape after use. When the knob portion P ₁ on the edge of the cover plate 16 begins to peel off the resin film, the knob portion P ₁ as described above begins peeling the resin film in the direction direction substantially perpendicular eye paperboard sheet opportunity Therefore, even if the paper layer causes delamination, the delamination of the paper layer immediately disappears, and the resin film is peeled off in a state where it is peeled off from the interface with the paperboard. In this way, even if the paper layer is not completely cut off at the cut line p, only the resin film is pulled immediately after the start of peeling, and when the resin film is peeled off at the side plate 12 following the cover plate 16, By peeling off the inner surface of the web corner portion W following both sides of the side plate 12, the resistance at the corner portion can be reduced, and the resin film can be peeled off without being cut. That is, when the resin film starts to peel off from the upper side of the side plate with the web corner portion attached to the outer surface, the resistance at the corner portion is large and the resin film often breaks, but the web corner portion is not attached. By starting to peel off the resin film from the upper edge of the side plate, it can be peeled off without being cut.

  6 is a perspective view showing another example of the web corner type paper container according to the present invention, FIG. 7 is a perspective view showing the web corner type paper container of FIG. 6 opened, and FIG. 8 is a web corner type paper container shown in FIG. It is an expanded view which shows no blank.

The web corner type paper container A ₂ shown in FIG. 6 and FIG. 7 is assembled using a laminated body in which a resin film is bonded to the entire surface of the paperboard as a material, with the film side as an inner surface. Its external shape is generally the same as that of a normal web corner paper container, and a pair of side plates 12 and 12 from one opposing side of the rectangular bottom plate 11 and a pair of side plates 13 and 13 from the other opposing side, respectively. The pair of side plates 12 and 12 facing each other is provided with large triangular lid plates 21 and 21 for locking, and the other pair of side plates 13 and 13 facing each other. The small triangular lid plates 22 and 22 are connected to each other, and a cutting line 21a that can be locked by being inserted into each other is formed in the vicinity of the tips of one pair of opposed lid plates 21 and 21. . Adjacent side plates 12 and 13 are connected to each other by a web corner portion W, and the web corner portion W is fixed by being bonded to the outer surface of the side plate 12 on which the large cover plates 21 and 21 are arranged. Yes.

Further, in this web corner type paper container A ₂ , the upper and lower sides of the side plate 13 on which the small cover plate 22 is provided are parallel to the direction of the paper of the paperboard (arrow direction). The tips of both small cover plates 22 and 22 are cut out in the same manner so as to be parallel to the direction of the paper of the paperboard, and at the edge portions at the tips of the small cover plates 22 and 22. As a trigger for starting to peel the resin film in a direction substantially perpendicular to the direction of the paper of the paperboard, there is provided a knob portion P ₁ as a peeling start portion for starting to peel off the bonded resin film. And these knob | pick parts P are formed by putting the cut line p by a sewing machine blade into layers other than a resin film.

The web corner type paper container A ₂ shown in FIGS. 6 and 7 is assembled from the blank B ₂ shown in FIG. This blank B ₂ is produced by punching out a raw material of a laminate in which a resin film is bonded to the entire surface of the paperboard in a peelable state. 11, side plates 12 and 12 are connected to upper and lower opposing sides via fold lines a, and side plates 13 and 13 are connected to left and right opposing sides via fold lines b. Here, in the blank B ₂ , the upper and lower opposing folding lines a are substantially orthogonal to the direction of the paperboard paper (arrow direction), and the left and right opposing folding lines b are parallel to the paperboard paper eye direction. Designed to be in the direction.

In addition, triangular folding pieces 14 are continuously provided on both sides of the side plates 12 and 12 in the blank B ₁ via radial folding lines c, and on both sides of the side plate 13 via radial folding lines d. Triangular folding pieces 15 are continuously provided, adjacent folding pieces 14 and 15 are continuously provided by a radial folding line e, and a portion where the folding pieces 14 and 15 are continuously provided is a web corner portion W. ing. Furthermore, large triangular lid plates 21 and 21 for locking are connected to the upper sides of one pair of opposing side plates 12 and 12 via a fold line f, respectively, and the other pair of opposing side plates 13 and Small triangular lid plates 22 and 22 are connected to the upper side of 13 via a fold line g. A cutting line 21a that can be locked by being inserted into each other is formed in the vicinity of the ends of one pair of cover plates 21 and 21 facing each other.

Then, in the blank B _2, the tip of both the small cover plate 22 is notched to the same so as to be parallel to the side plate 13, the edge portion at the tip of the small cover plate 22 In addition, a knob portion P ₁ is provided as a peeling start portion for starting to peel the bonded resin film. Therefore, the knob portion P ₁ is provided such that the direction to start peeling of the resin film becomes a direction substantially perpendicular to the direction of the eye of paperboard sheet (arrow). These knobs P ₁ are formed by putting a cut line p by a sewing blade in a semicircular shape in a layer other than the resin film F (see FIG. 4). By providing such a knob P ₁ , layers other than the resin film F are broken at the cut line p, and the resin film F can be peeled off. The cut line p can be entered with a cutting blade in addition to the sewing machine blade.

FIG. 9 is an explanatory view showing a procedure for peeling the resin film F from the web corner paper container A ₂ shown in FIGS. 6 and 7, and the resin film F is peeled in the order of the numbers in the figure. is there.

This web corner paper container A ₂ can begin to peel off the resin film from the knob P ₁ while remaining in the container shape after use. When the start peeling the resin film from either of the knob portion P ₁ on the edge of a small cover plate 22, the knob portion P ₁ as described above is a direction substantially orthogonal to the direction of the eye of the resin film of the paperboard sheet The paper layer is peeled off immediately from the interface with the paperboard, even if the paper layer is delaminated. Go. Thus, even if the paper layer is not completely cut off at the cut line, only the resin film is pulled immediately after the start of peeling, and when the resin film is peeled off at the side plate 13 following the small lid plate 22, By peeling off the inner surface of the web corner W that follows both sides of the side plate 13, the resistance at the corner can be reduced, and the resin film can be peeled off without being cut. Further, when both the knobs P ₁ and P ₁ of the cover plates 22 and 22 are pulled up at a time, even if there is a slight residue of the contents, this is held in the center of the film, so that the hands are not soiled while being wrapped. Can be discarded.

  10 is a perspective view showing still another example of the web corner type paper container according to the present invention, FIG. 11 is a perspective view showing the web corner type paper container of FIG. 10 opened, and FIG. 12 is a web corner type paper shown in FIG. It is an expanded view which shows the blank of a container.

The web corner paper container A ₃ shown in FIGS. 10 and 11 is substantially the same as the web corner paper container A ₂ shown in FIGS. 6 and 7, and stands up diagonally upward from one opposite side of the bottom plate 11. Only the shapes of the cover plates 21 and 21 connected to the pair of side plates 12 and 12 are different. Also, blank B ₃ shown in FIG. 12 is substantially the same as that shown in FIG. 8, it differs by the shape of the cover plate 21, 21. That is, the pair of opposed cover plates 21 and 21 is not changed in that they are large triangles, but the locking projection 21b is formed near the tip of one of the cover plates 21 by a cut line. Is provided with a slit 21c in which the locking projection 21b can be locked. Therefore, the lid is closed as shown in FIG. 10 by inserting the locking projection 21b from the outside of the slit 21c.

10 and 11, the web corner type paper container A ₃ can also be picked from the blank P ₁ by using the resin film in the container shape after use, and the web corner shown in FIGS. 6 and 7 can be peeled off. is the same as that described in the paper container a _2.

In the above-mentioned three web corner type containers, as the peeling start part, a knob part inward from the edge part of the cover plate is formed, but as shown in FIG. 13, the knob protruding from the edge part of the cover plate 16 The part P ₁ may be provided. In this case, the boundary line of the knob portion P ₁ is the cut line p that is put in a layer other than the resin film. This cut line p can also be formed by a cutting edge in addition to the perforation as shown. The shape of the knob portion P ₁ that the projecting is a semi-circular in FIG., Is arbitrary as Saere can pick with fingers. Then, even in the case where the knob portion P ₁ that such a protrusion, peeled how the resin film is the same as that described above.

Further, as shown in FIG. 14, a pushing portion P ₂ may be provided in the vicinity of the edge portion of the cover plate 16 as a peeling start portion. The indented portion P ₂ is provided by a cut line p formed in a layer other than the resin film, and the cut line p can be formed simultaneously with punching the blank from the original fabric. The cut line p can be formed by a cutting edge in addition to the perforation as shown in the figure. In addition, the shape of the pushing portion P ₂ is an oval shape in the figure, but is arbitrary as long as it can be pushed with a finger. When provided with such a pushing portion P _2, the consumer after using web corner paper container, creating an opportunity to peel off the resin film by pressing the pushing portion P ₂ with a finger, Tokkakari the peeled portion The resin film can be peeled off.

As a material of the web corner type paper container according to the present invention, a laminate in which a resin film is bonded to the inner surface of a paperboard as a base material is used. The range of the paperboard is wide, and coat balls, manila balls, milk carton base paper, cup base paper, cardboard and the like can be used. Although the basis weight varies depending on the size of the paper container, a range of 150 to 450 g / m ² is preferable.

  In addition, as the resin film for preventing dirt, a polyethylene film, a polypropylene film, a polyester film, a polyamide film, etc. can be used, and a biodegradable plastic film (polylactic acid, polyhydroxybutyrate, polylactocapton, Polybutylene succinate, polyethylene succinate, polyvinyl alcohol, cellulose acetate, etc.) can also be used. In selecting a film, it is preferable to use a film that conforms to the publicly known Ministry of Health and Welfare Notification No. 20.

The resin film can be bonded by a method in which the entire surface is peeled off using a peelable adhesive, or a method in which a polyethylene resin is extruded, laminated, and bonded .

  In addition, like the blank forming a general paper container, printing is performed on the surface of the web corner type paper container of the present invention, but any known method such as offset, gravure, flexographic printing, etc. Can be used. Furthermore, post-processing such as overcoating, polishing, embossing and the like can be performed freely. However, it is preferable to remove the overcoat layer and the like at the portion where the web corner portion is bonded.

  In the above description of the embodiment, the resin film is peeled off in the shape of the container. However, the resin film may be peeled off after the container is expanded. Even in this case, since the resin film is peeled off in a direction substantially perpendicular to the direction of the paper eyes of the paperboard, the paper layer is not peeled off immediately and the separation is performed well.

  The paper container blank according to the present invention is not limited to the one described in the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, the web corner type paper container mentioned in the above example has a tray shape in which the shape of the side plate is a trapezoid having a wide upper side, but may be a rectangular parallelepiped shape in which all the side plates are rectangular.

It is a perspective view which shows an example of the web corner type | mold paper container which concerns on this invention. It is a perspective view shown in the state which opened the web corner type | mold paper container of FIG. It is an expanded view which shows the blank of the web corner type | mold paper container shown in FIG. It is a partial expanded sectional view of FIG. It is explanatory drawing which shows the procedure which peels a resin film from the web corner type | mold paper container shown in FIG.1 and FIG.2. It is a perspective view which shows another example of the web corner type | mold paper container which concerns on this invention. It is a perspective view shown in the state which opened the web corner type | mold paper container of FIG. It is an expanded view which shows the blank of the web corner type | mold paper container shown in FIG. It is explanatory drawing which shows the procedure which peels a resin film from the web corner type | mold paper container shown in FIG.6 and FIG.7. It is a perspective view which shows another example of the web corner type | mold paper container which concerns on this invention. It is a perspective view shown in the state which opened the web corner type | mold paper container of FIG. It is an expanded view which shows the blank of the web corner type | mold paper container shown in FIG. It is explanatory drawing of the other example of the knob | pick part as a peeling start means. It is explanatory drawing of the pushing part as a peeling start means.

Explanation of symbols

A _{1 to} A ₃ web corner type paper container B _{1 to} B ₃ blank F Resin film P ₁ knob P ₂ pushing part W web corner a ai folding line p cut line 11 bottom plate 12, 13 side plate 14, 15 folding piece 16 Lid plate 17 Insertion piece 18 Extension piece 21, 22 Lid plate 21a Cut line 21b Locking convex part 21c Slit

Claims (4)

The laminate is made of a resin film that is bonded to the entire surface of the paperboard, and is assembled with the film side as the inner surface. The side plate stands on each side of the bottom plate via a fold line, and both sides of each side plate. Folding pieces are continuously connected to the sides via folding lines, and adjacent folding pieces are connected to each other via radial folding lines that extend radially outward from the corners of the bottom plate, A web corner type paper container in which the web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface , and the upper and lower sides are substantially perpendicular to the direction of the eyes of the paperboard. cover plate on the upper side of the side plate are continuously provided, the eyes and substantially parallel edges of the paper at the cover plate, as a trigger for starting to the resin film is peeled off and placed in layers other than the resin film Webb corner paper container, characterized in that Re knob as peeling start portion to be formed by eyes is provided. The laminate is made of a resin film that is bonded to the entire surface of the paperboard, and is assembled with the film side as the inner surface. The side plate stands on each side of the bottom plate via a fold line, and both sides of each side plate. Folding pieces are continuously connected to the sides via folding lines, and adjacent folding pieces are connected to each other via radial folding lines that extend radially outward from the corners of the bottom plate, A web corner type paper container in which the web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface, and the side plate whose upper and lower sides are substantially parallel to the direction of the eyes of the paperboard. A cover plate is continuously provided on the upper side, and a cut line formed in a layer other than the resin film as a trigger for starting to peel off the resin film at an edge portion substantially parallel to the paper eye of the cover plate. Webb corner paper container, wherein a knob portion of a cleave initiation portion formed comprising is provided. The laminate is made of a resin film that is bonded to the entire surface of the paperboard, and is assembled with the film side as the inner surface. The side plate stands on each side of the bottom plate via a fold line, and both sides of each side plate. Folding pieces are continuously connected to the sides via folding lines, and adjacent folding pieces are connected to each other via radial folding lines that extend radially outward from the corners of the bottom plate, A web corner type paper container in which the web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface , and the upper and lower sides are substantially perpendicular to the direction of the eyes of the paperboard. are cover plate continuously provided on the upper side of the side plate, in the vicinity of the eyes and substantially parallel edges of the paper at the cover plate, as a trigger for starting to the resin film is peeled off, the input to a layer other than the resin film Webb corner paper container, wherein a pushing portion of the peeling start portion obtained by forming at a break line has are provided. The laminate is made of a resin film that is bonded to the entire surface of the paperboard, and is assembled with the film side as the inner surface. The side plate stands on each side of the bottom plate via a fold line, and both sides of each side plate. Folding pieces are continuously connected to the sides via folding lines, and adjacent folding pieces are connected to each other via radial folding lines that extend radially outward from the corners of the bottom plate, A web corner type paper container in which the web corner portion is bonded to the outside of the side plate, except for the side plate in which the web corner portion is bonded to the outer surface, and the side plate whose upper and lower sides are substantially parallel to the direction of the eyes of the paperboard. A cover plate is connected to the upper side, and the cut in a layer other than the resin film is used as a trigger to start peeling off the resin film near the edge of the cover plate that is substantially parallel to the paper eye. Webb corner paper container, wherein a pushing portion of the peeling start portion obtained by forming a line is provided.

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