JP4443997B2 - Web corner paper container - Google Patents

Description

  The present invention relates to a web corner type paper container having a liquid leakage prevention function corresponding to recycling.

  Conventionally, paper containers such as freshly fried chicken, cooked foods with sauce, gravy, sauces, frozen foods, etc. have four corners so as to prevent leakage of oil, seasonings, gravy, etc. from the four corners. Web corner type paper containers with corners folded outward are used. In this web corner type paper container, the web corner portion with the four corners folded outward is bonded and fixed to the outer surface of the side plate of the paper container.

  For foods with seasonings and oils, foods that are boiled, or frozen foods that have been cooked in a microwave oven, it is generally a web corner made of a laminate consisting of a paper and an antifouling film such as polyethylene coated on the inner surface. A pattern paper container is used, and the antifouling film prevents the contents from adhering to the paper surface or the contents from being contaminated by the material adhering to the paper surface.

  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, it is desired to separate materials as much as possible, such as paper and plastic, when discarding containers used for packaging.

In response to this environmental problem, when separating the web corner paper container into paper and anti-smudge film at the time of disposal, the anti-smudge film is placed on the inner surface of the paper web corner paper container. The form which used the laminated body bonded so that peeling was possible was proposed. However, even in such a web corner type paper container, consumers often discard the antifouling film without removing it after eating the food. There has also been proposed a web corner type paper container in which lottery information is printed on the back surface of the anti-smudge film so that consumers want to peel off the peelable anti-smudge film (see, for example, Patent Document 1).
Registered Utility Model No. 3084534

  However, in conventional web corner type paper containers, there is no fixed method for peeling off the antifouling film that can be peeled off after use, so it is difficult to understand the beginning of peeling, and depending on how it is peeled off, the antifouling film may be cut off. In many cases, the antifouling film was missed. Even if the film is to be peeled off successfully, the film often fails to peel off particularly when the antifouling film is strongly adhered.

  The present invention is a web corner type paper container having an antifouling film bonded to the inner surface in a peelable manner, so that anyone can easily and reliably use an antifouling film in an assembled state after use. An object of the present invention is to provide a web corner type paper container that can be peeled off.

The present invention made in order to solve the above-mentioned problems is made of a laminate in which a peelable antifouling film is bonded to a paperboard, and a side plate is connected to each side of a polygonal bottom plate via a broken line. A web corner portion in which folded pieces are continuously connected to both sides of the side plate via a broken line, and the adjacent folded pieces are connected to each other via a radial folded line extending radially outward from a corner of the bottom plate. A web corner type paper container formed and folded to the outside of the side plate and bonded to the outer surface and fixed to a side plate other than the side plate having the web corner portion bonded to the outer surface. A peeling start display is provided to indicate a portion where the joined antifouling film starts to be peeled off, and is adjacent to the bottom plate of the side plate with the web corner portion bonded to the outer surface. It is characterized in that from both ends of the lower side to the upper side facing the oblique fold lines are provided.

  According to the present invention, in the web corner type paper container in which the antifouling film is releasably bonded to the inner surface, the center of the upper edge of the side plate that is not fixed by folding the web corner portion to the outer surface and bonding it to the outer surface By providing the part with a peel start indication indicating the part where the antifouling film bonded to the inner surface starts to be peeled off, the consumer can fold the web corner part outward after using the web corner type paper container of the present invention. By peeling off the antifouling film from the peeling start indication provided on the side plate that is not fixed to the outer surface, everyone can easily and reliably remove the antifouling film in the assembled state. It has the effect that it can be peeled off. Further, by providing the peeling start display with embossing such as Braille, there is an effect that a visually handicapped person can recognize a part where the antifouling film starts to be peeled off.

  Moreover, it has the effect that it can peel easily, without being influenced by the adhesive strength and adhesion area of the film for dirt prevention.

  Furthermore, after using the web corner paper container of the present invention, two diagonal fold lines extending from the upper side to both ends of the lower side are provided on a pair of opposing side plates that are folded to the outside and bonded to the outer surface. When peeling off the antifouling film from the peeling start indication part, it is possible to more easily peel off the antifouling film from the web corner paper container by folding the side plate so that the side plate swells outward at this diagonal fold line. I have it.

  Hereinafter, an embodiment of a web corner type paper container of the present invention is described in detail based on a drawing. FIG. 1 is a perspective view showing an embodiment of a web corner type paper container of the present invention, FIG. 2 is a partially enlarged view for explaining a method of treating the web corner type paper container of the present invention after use, and FIG. FIG. 4 is a development view showing a blank of the web corner type paper container of 1 of the present invention, FIG. 4 is a perspective view showing another embodiment of the web corner type paper container of the present invention, and FIG. 5 is a web corner type paper container of the present invention. FIG. 6 is a perspective view showing still another embodiment of the web corner type paper container of the present invention, and FIG. 7 is still another example of the web corner type paper container of the present invention. FIG. 8 is a perspective view showing an embodiment, FIG. 8 is a development view showing a blank of the web corner paper container of the present invention in FIG. 7, and FIG. 9 is still another implementation of the web corner paper container of the present invention. FIG. 10 is a developed view showing a blank of the web corner paper container of the present invention in FIG. 9, and FIG. 11 is a perspective view showing still another embodiment of the web corner paper container of the present invention. FIG. 12 is a partially enlarged view for explaining the assembly process of the web corner type paper container of the present invention.

  FIG. 1 is a perspective view showing an embodiment of a web corner type paper container according to the present invention. The web corner paper container A according to the present invention has an antifouling film peelably bonded to the inner surface, and as shown in FIG. 1, the appearance shape is generally the same as that of a normal web corner paper container. Side plates 12, 12 stand up from a pair of opposite sides of the bottom plate 11, and side plates 13, 13 stand up from another pair of opposite sides, and a cover plate is placed on the upper side of one side plate 12 of the pair of opposite side plates 12, 12. 16 and the insertion piece 17 are connected in series, and reinforcing pairs 18 and 18 are provided on the other pair of opposing side plates 13 and 13, respectively. Adjacent side plates are connected to each other by a web corner portion W, the web corner portion W is folded outward and bent to the opposite pair of side plates 13 and 13 and bonded to the outer surface of the side plates 13 and 13 and fixed. Yes.

  Further, in the web corner type paper container A according to the present invention, a substantially central portion of the upper edge of one side plate 12 of a pair of opposing side plates 12 and 12 which are not fixed by folding the web corner portion W outward and bonding to the outer surface. The peeling start display P which shows the site | part which begins to peel off the film for dirt prevention bonded to the inner surface is provided by printing. By providing the peeling start display P, the consumer uses the web corner type paper container A of the present invention, and then folds the web corner portion W outward and attaches it to the outer surface so that the side plate 12 is not fixed. By peeling off the antifouling film from the peeling start display P, anyone can easily and reliably peel off the antifouling film.

  The reason why the anti-smudge film can be easily and reliably peeled off by peeling off the anti-smudge film from one side plate 12 that is not fixed by folding the web corner part W on the outer surface. If the antifouling film F starts to be peeled off from the upper edge of the side plate 13 that is folded and bonded to the outer surface by folding the web corner W outward, as shown in FIG. When the antifouling film F starts to be peeled off from the upper edge of one side plate 12 as compared with the fact that the antifouling film F is often cut off as shown in FIG. When the inner surface of the web corner portion W is peeled off, the resisting force at the corner portion K is small, and the antifouling film F can be peeled off without breaking.

  FIG. 3 is a development view showing a blank of the web corner type paper container of the present invention. The blank 10A is provided with side plates 12 and 12 on the upper and lower sides of the rectangular bottom plate 11 via fold lines a and a, and on the left and right sides of the pair of opposite sides, the side plates 13 and fold lines b and b. 13 is provided. Triangular folding pieces 14, 14, 14, 14 are connected to both sides of the side plates 12, 12 via radial folding lines c, c, c, c, respectively, and radial folding lines d are arranged on both sides of the side plates 13, 13. , D, d, and d, triangular folding pieces 15, 15, 15, and 15 are connected in series, adjacent folding pieces are connected by a radial broken line e, and a web portion is connected to the folding pieces. The corner portion W is used. Further, a cover plate 16 is connected to one of the pair of side plates 12, 12 on the upper side of the side plate 12 via a broken line f, and an insertion piece 17 is connected to the upper side of the cover plate 16 via a broken line g. Reinforcing pieces 18 and 18 are connected to the outer sides of the other pair of opposing side plates 13 and 13 via broken lines h and h, respectively. The reinforcing pieces 18 are not necessarily provided, but are preferably provided in order to improve shape retention.

  Furthermore, in the web corner type paper container A according to the present invention, the web corner portion W was bonded to the inner surface on the surface of the upper edge of the side plate 12 that is not fixed by folding the web corner portion W to the outer surface. The peeling start display P which shows the site | part which begins to peel the film for dirt prevention is provided by printing. As shown in the figure, the peeling start display P is provided with the characters “peel” and an arrow by printing. This is merely an example, and any display that instructs the start of peeling may be used. For example, only an arrow or a figure of a finger may be used. The position to be provided may be the front surface or the back surface of the substantially central portion of the upper edge of one side plate 12 that is not fixed by folding the web corner portion W outward and bonding it to the outer surface.

  FIG. 4 is a perspective view showing another embodiment of the web corner type paper container according to the present invention. The web corner paper container A ′ according to the present invention can be assembled from the same blank 10 as the web corner paper container A, and an antifouling film is releasably bonded to the inner surface of the pair of rectangular bottom plates 11. The side plates 12 and 12 stand up from the opposite side, and the side plates 13 and 13 stand up from the other pair of opposite sides, and the cover plate 16 and the insertion piece 17 are placed on the upper side of one side plate 12 of the pair of opposite side plates 12 and 12. Reinforcing pieces 18 and 18 are provided on the other pair of side plates 13 and 13 that are connected in series. Adjacent side plates are connected to each other by a web corner portion W, and the web corner portion W is folded outward and bonded to the outer surface of the side plate 12 and the outer surfaces of the side plates 13 and 13 where the lid plate 16 is continuously provided. is doing.

  Further, in the web corner type paper container A ′ according to the present invention, the anti-smudge is bonded to the inner surface at the substantially central portion of the upper edge of the side plate 12 which is not fixed by folding the web corner portion W outward and bonding to the outer surface. The peeling start display P which shows the site | part which starts peeling a film is provided by printing. By providing the peeling start display P, the consumer uses the web corner paper container A ′ of the present invention, and then peels off the side plate 12 that is not fixed by folding the web corner portion W outward and bonding it to the outer surface. By peeling off the antifouling film from the start display P, anyone can peel off the antifouling film easily and reliably. In the form of the web corner type paper container A ′, the web corner portion W is folded outward and starts to peel off the antifouling film from the side plate 12 which is not fixed by being bonded to the outer surface, and the web corner portion W adjacent to the side plate 12 is started. The anti-smudge film can be easily peeled off, and the anti-smudge film can be more easily peeled off even at the web corner W bonded to the outer surface of the side plate 12 to which the cover plate 16 is connected. it can.

  FIG. 5 is a perspective view showing another embodiment of the web corner type paper container according to the present invention. The web corner type paper container B according to the present invention has the same shape as the web corner type paper container A, and as shown in FIG. 5, approximately the center of the upper edge of one side plate 12 of a pair of opposing side plates 12, 12. The peeling start display P which shows the site | part which begins to peel the film for dirt prevention bonded by the inner surface to the part is provided by the embossing. As shown in the figure, the peeling start display P is provided with an embossed arrow. This is merely an example, and any display that instructs the start of peeling visually or by touch may be used. For example, display using Braille may be used. By providing this peeling start display P, the consumer, like the web corner paper container A, uses the web corner paper container B of the present invention, and then peels off the antifouling film from the peeling start display P. Anyone can easily and reliably remove the assembled state.

  FIG. 6 is a perspective view showing still another embodiment of the web corner type paper container according to the present invention. In addition to the shape of the web corner paper containers A and B described above, the web corner paper container C according to the present invention is extended to the side plates 13 and 13 that are not fixed by folding the web corner portion W to the outside and bonding them to the outer surface. 18 and 18 are provided. And the peeling start means P is provided in the upper side or upper part of the extension piece 18, respectively. The peeling start means P can be provided by printing, embossing or the like, similar to the web corner paper containers A and B described above.

  FIG. 7-a is a perspective view showing still another embodiment of the web corner type paper container according to the present invention. Like the web corner paper container A, the web corner paper container D according to the present invention has an antifouling film detachably bonded to the inner surface, and side plates 12 and 12 from a pair of opposing sides of the rectangular bottom plate 11. However, the side plates 13, 13 stand up from another pair of opposing sides, and a cover plate 16 and an insertion piece 17 are connected to the upper side of one side plate 12 of the pair of opposing side plates 12, 12 to face each other. Reinforcing pieces 18 and 18 are provided on the pair of side plates 13 and 13, respectively. Adjacent side plates are connected to each other by a web corner portion W, the web corner portion W is folded outward and bent to the opposite pair of side plates 13 and 13 and bonded to the outer surface of the side plates 13 and 13 and fixed. Yes.

  Further, in the web corner type paper container D according to the present invention, as shown in FIG. 7A, the antifouling bonded to the inner surface at the substantially central portion of the upper edge of one side plate 12 of the pair of opposing side plates 12, 12. On the side plates 13 and 13 where the web corner portion W is folded outward and bonded to the outer surface, and two ends from the upper side to the lower side are provided. Diagonal broken lines x and x are provided, respectively. After the web corner paper container D is used, when the anti-smudge film is peeled off from the part of the peeling start display P, the anti-smudge film F is peeled off from the side plate 12 as shown in FIGS. Pull the inner edge of the web corner W. For this reason, the portion where the web corner portion W of the side plate 13 is affixed to the inner side, the gap M between the web corner portions W is gradually increased, and the antifouling film F is easily peeled off. At that time, by providing the diagonal fold lines x and x on the side plate 13 to which the web corner portion W is stuck, the portion of the side plate 13 to which the web corner portion W is stuck becomes easier to bend in the inner direction, so that the web can be smoothly smoothed. The antifouling film F attached to the inside of the corner portion W can be peeled off. Therefore, the antifouling film F can be peeled off from the web corner type paper container D more easily.

  The diagonal broken lines x and x are provided so as to extend from the upper side to the lower side of the side plates 13 and 13, and are folding lines of the web corner portion W bonded to the outer surface of the side plate 13 as in this example. Providing at the position of the side plate 13 along the edge line w is preferable because the portion of the web corner portion W is easily bent, and the antifouling film on the web corner portion W is easily peeled off. Further, as shown in FIG. 7B, the side plate may be provided so as to extend from the substantially central portion of the side plate to both ends of the lower side. In this case, the strength of the web corner type paper container is hardly lowered. Further, as shown in FIG. 7-c, it may be provided at the position of the side plate 13 hidden behind the bonded web corner portion W. In this case, the appearance is not noticeable.

  FIG. 8 is a development view showing a blank of the web corner type paper container C of the present invention. The blank 10D is provided with side plates 12 and 12 through a pair of opposing sides on the top and bottom of a rectangular bottom plate 11 via fold lines a and a, and side plate 13 and a side plate 13 through fold lines b and b on the other pair of opposing sides on the left and right. 13 is provided. Triangular folding pieces 14, 14, 14, 14 are connected to both sides of the side plates 12, 12 via radial folding lines c, c, c, c, respectively, and radial folding lines d are arranged on both sides of the side plates 13, 13. , D, d, and d, triangular folding pieces 15, 15, 15, and 15 are connected in series, adjacent folding pieces are connected by a radial broken line e, and a web portion is connected to the folding pieces. The corner portion W is used. Further, a lid plate 16 is connected to the upper side of one side plate 12 of the pair of opposing side plates 12 and 12 via a broken line f, and an insertion piece 17 is connected to the upper side of the lid plate 16 via a broken line g. Has been established.

  Further, in the web corner type paper container D according to the present invention, the peeling that indicates the part that starts to peel off the antifouling film bonded to the inner surface of the upper edge of one side plate 12 of the pair of opposing side plates 12, 12. On the side plates 13 and 13 on which the start display P is provided and the web corner portion W is folded outward and bonded to the outer surface, two oblique broken lines x and x extending from a substantially central point of the upper side to both ends of the lower side. Are provided. Further, reinforcing pieces 18 and 18 are connected to the outer sides of the other pair of opposing side plates 13 and 13 via broken lines h and h, respectively. In the case of this form, it is preferable to provide reinforcing pieces 18 and 18 on the upper sides of the side plates 13 and 13 provided with the oblique broken lines x and x in order to improve the shape retention when assembled.

  In the above embodiment, the web corner portion W is folded outside the side plates 13 and bonded to the outer surface. However, like the web corner paper container E shown in FIG. In this case, the side plates 13 and 13 are provided with a peeling start display P, and the oblique folding lines x and x are provided on the side plates 12 and 12. FIG. 10 is a development view showing a blank of the web corner type paper container E. FIG.

  Further, the web corner type paper container according to the present invention is not limited to the description of the above embodiment, and can be variously modified without departing from the gist of the present invention. For example, the side plate 12, 12, 13, 13 is a trapezoidal web corner paper container having a trapezoidal shape with a wide upper side, but it can also be a rectangular parallelepiped web corner paper container (not shown) with all side plates rectangular. Good.

  Moreover, the shape without the cover board 16 may be sufficient like the web corner type | mold paper container F shown in FIG.

The material of the web corner type paper container according to the present invention uses a laminate in which a film for preventing soiling is bonded to the inner surface of a paperboard as a base material. 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 a 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 and the like) 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 antifouling film can be bonded by a method of using a peelable adhesive for releasable bonding, or a method of extruding and laminating using a polyethylene resin or the like. Furthermore, there is also a method of partial bonding using heat sealing or a known emulsion type, solvent type, hot melt type adhesive or pressure sensitive adhesive.

  In addition, as with a general paper container, printing is performed on the surface of the web corner mold A of the present invention, but any known method such as offset, gravure, flexographic printing, etc. can be used. Furthermore, post-processing such as overcoat, polishing, embossing, etc. can be performed freely. However, it is preferable to remove the overcoat layer or the like from the portion where the web corner portion W is bonded.

  Next, a process for producing the web corner type paper container A of the present invention will be described. This process is substantially the same as the process of forming a general web corner type paper container. First, printing, surface processing, etc. are performed on the surface of the laminated body in which the paper and the antifouling film are bonded, or on the front and back surfaces. . In this step, a peeling start display P indicating a part where the antifouling film bonded to the inner surface starts to be peeled off is provided at a substantially central portion of the upper edge of one side plate 12 of the pair of opposing side plates 12 and 12. Next, in a blanking process, a blank 10A as shown in FIG. 3 is punched. In this process, an inner surface is formed at a substantially central portion of the upper edge of one side plate 12 of the pair of opposing side plates 12 and 12 in the web corner paper container B. The peeling start display P which shows the site | part which begins to peel off the film | membrane for antifouling bonded to can be provided by embossing. Further, in this step, the side plates 13 and 13 can be provided with two oblique broken lines x and x extending from the approximate center point of the upper side to both ends of the lower side.

  Next, as shown in FIG. 11-a, each web corner portion W is folded outward along a radial fold line e, and as shown in FIG. 11-b, the web corner portion W is folded toward the side plate 13, As shown in FIG. 11C, the folding piece 15 is bonded to the outer surface of the side plate 13. This bonding can be performed using, for example, a known adhesive such as an emulsion-type adhesive or a hot-melt-type adhesive. In this way, the web corner type paper container A can be manufactured by bonding and fixing the web corner portions W to the outer surfaces of the side plates 13 and 13. Further, the web corner paper containers A ′, C, D, E, and F can be manufactured in substantially the same manner.

  After using the web corner type paper container thus produced according to the present invention, the antifouling film bonded to the inner surface is peeled off, separated into paper and antifouling film, and the paper is reused as a resource. As a method of peeling off the antifouling film, first, peeling is started from the portion of the side plate 12 where the peeling start indication is provided. Next, after peeling off the part of the side plate 12, the part of the web corner W is peeled off continuously. At this time, the web corner W can be easily peeled off by peeling from the side plate 12 side. Next, the side plates 13 and 13 are peeled off. Further, the bottom plate 11 and the remaining side plate 12 can be peeled off, and finally the whole can be peeled off.

It is a perspective view which shows one Embodiment of the web corner type | mold paper container of this invention. It is the elements on larger scale explaining the method of processing after use the web corner type paper container of the present invention. It is an expanded view which shows the blank of the web corner type | mold paper container of this invention of FIG. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is an expanded view which shows the blank of the web corner type | mold paper container of this invention of FIG. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is an expanded view which shows the blank of the web corner type | mold paper container of this invention of FIG. It is a perspective view which shows another embodiment of the web corner type | mold paper container of this invention. It is the elements on larger scale explaining the assembly process of the web corner type | mold paper container of this invention.

Explanation of symbols

A to F Web corner type paper container of the present invention 10A Blank (Web corner type paper container A)
10C Blank (Web corner paper container C)
10D Blank (Web corner paper container D)
11 Bottom plate 12 Side plate (up and down)
13 Side plates (left and right)
14 Folding piece 15 Folding piece 16 Cover plate 17 Insertion piece 18 Reinforcing piece 19 Reinforcing piece a, b Folding line c to e Radial folding line f to i Folding line F Dirt prevention film x Diagonal folding line W Web corner part w Edge line (Web corner part)
P Peel start display K Corner

Claims (3)

The laminate is made of a laminate that has a peelable antifouling film attached to the paperboard, and side plates are connected to each side of the polygonal bottom plate via fold lines, respectively, and both sides of the side plate are connected via fold lines. Folding pieces are continuously provided, and a web corner portion is formed in which the adjacent folding pieces are connected via a radial broken line extending radially outward from a corner of the bottom plate, and the web corner portion is formed outside the side plate. A web corner type paper container that is folded and bonded to the outer surface and fixed,
A side plate other than the side plate bonded to the outer surface of the web corner portion is provided with a peeling start indication indicating a portion where the bonded antifouling film starts to be peeled, and the side plate bonded to the outer surface of the web corner portion. A web corner type paper container, characterized in that diagonal fold lines are provided from both ends of the lower side adjacent to the bottom plate to the upper side opposite to each other .   The web corner type paper container according to claim 1, wherein the peeling start indication is provided by printing on an upper edge portion of the side plate.   The web corner type paper container according to claim 1, wherein the peeling start indication is provided by embossing on an upper edge portion of the side plate.