JP2022118997A - Lid material and container using the same - Google Patents

Abstract

To provide a lid material capable of reducing environmental load, and a container using the lid material.SOLUTION: A lid material 10 of the invention for sealing a bottomed cylindrical container body 2, which is formed by bending a blank plate 30 made of paper and has a flange portion 2b around an opening 2a comprises: an upper surface plate 11; a lower surface plate 12 having a window portion 16 which is opened so as to be opposed to the upper surface plate 11 and through which a flange portion 2b can be inserted; a pair of side plates 13 that are folded in two at fold lines 13a that connect the left and right ends of the top plate 11 and the left and right ends of the bottom plate 12, respectively, and extend forward and backward; and a resin film 17 which covers the window portion 16 and is bonded to the lower surface of the lower surface plate 12 by a sticking portion 18. The resin film 17 has an annular half-cut line 17a arranged between the window portion 16 and the sticking portion 18.SELECTED DRAWING: Figure 4

Description

TECHNICAL FIELD The present invention relates to a lid member and a container having a container body sealed by the lid member.

A conventional container for yogurt or the like is disclosed in US Pat. The container comprises a container body, an inner lid and an outer lid. The container body is made of paper with polyethylene on the inner surface side, and is formed into a bottomed cylindrical shape with a flange around the mouth. The inner lid is made of laminated paper with polyethylene on the inner side of the paper and is heat-bonded to the flange. The outer cover is formed of a resin molded product and fitted to the flange of the container body.

The contents can be taken out by removing the outer lid and peeling the inner lid from the flange. Also, the container with the remaining contents can be stored with the outer lid closed.

Jitsuzen Sho 57-140384 (pages 3-10, Figure 9)

However, according to the above conventional container, since the outer cover is formed of a resin molded product, there is a problem that the environmental load is increased.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lid member that can reduce environmental load and a container using the lid member.

In order to achieve the above object, the present invention provides a cover member for sealing a bottomed tubular container body formed by folding a paper blank plate and having a flange portion around the opening, comprising: an upper plate, a lower plate facing the upper plate and having a window portion through which the flange portion can be inserted, and a first longitudinally extending first plate connecting the left and right ends of the upper plate and the left and right ends of the lower plate, respectively. a pair of side plates that are folded in half along folding lines; and a resin film that covers the window and is adhered to the lower surface of the bottom plate by an adhesion portion, wherein the resin film is adhered to the window and the adhesion. It is characterized by having an annular half-cut cutting line arranged between the parts.

Further, according to the present invention, in the lid member having the above structure, the side plate has a pair of first cuts arranged side by side in the front-rear direction so as to intersect the folding line.

Further, according to the present invention, in the cover member having the above structure, the adhesive margin piece and the bottom plate continuously provided on one of the side surfaces are adhered to each other, and the open end of the adhesive margin piece extends outside the outer edge of the flange portion. It is characterized by being distributed.

Further, according to the present invention, in the lid member having the above structure, the entire periphery of the window portion is arranged outside the outer edge of the flange portion.

Further, according to the present invention, in the lid member having the above structure, the peripheral edge of the window portion is arranged inside the outer edge of the flange portion, and a plurality of second cuts extending outward from the peripheral edge of the window portion are arranged in parallel in the circumferential direction. It is characterized by

Further, according to the present invention, in the lid member having the structure described above, an engaging piece protruding inward from the peripheral edge of the window portion is provided.

A container according to the present invention is characterized by comprising a lid member having each of the above configurations, and a container body sealed by the lid member by thermally adhering the resin film to the flange portion.

According to the present invention, the lid material for sealing the container body is made of paper to which a resin film is adhered, so that the environmental load can be reduced. In addition, since the resin film attached to the bottom plate of the lid member has an annular half-cut cutting line, the cutting line is cut when the container is opened to expose the window into which the container body is inserted. This allows the container to be easily resealed.

The perspective view which shows the container of 1st Embodiment of this invention. The front view which shows the container of 1st Embodiment of this invention. FIG. 2 is a plan view showing a blank plate of the lid material of the container according to the first embodiment of the present invention; The bottom view which shows the cover material of the container of 1st Embodiment of this invention. The perspective view which shows the state at the time of opening the container of 1st Embodiment of this invention. The perspective view which shows the cover material after opening the container of 1st Embodiment of this invention. FIG. 2 is a perspective view showing the state of the container according to the first embodiment of the present invention at the time of resealing; FIG. 2 is a front view showing a resealed state of the container according to the first embodiment of the present invention; The bottom view which shows the cover material of the container of 2nd Embodiment of this invention. The bottom view which shows the cover material of the container of 3rd Embodiment of this invention.

<First embodiment>
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a perspective view and a front view of the container of the first embodiment. A container 1 stores viscous contents such as yoghurt and jam in a sealed manner. The container 1 has a container body 2 and a lid member 10 .

The container body 2 is made of laminated paper in which a resin film is arranged on the inner surface of a paper substrate, and is formed into a bottomed tubular shape having an opening 2a on the upper surface. An annular flange portion 2b protruding outward is provided around the opening portion 2a. In this embodiment, the opening 2a is formed in a substantially rectangular shape with curved corners.

The lid member 10 includes an upper plate 11 , a lower plate 12 , a side plate 13 and a resin film 17 . The upper plate 11, the lower plate 12 and the side plates 13 are formed by bending a paper blank plate 30 (see FIG. 3) into a cylindrical shape with both front and rear sides open. The upper plate 11 and the lower plate 12 face each other in the vertical direction. A pair of side plates 13 are provided, and connect the left and right ends of the top plate 11 and the left and right ends of the bottom plate 12, respectively.

FIG. 3 shows a plan view of the blank plate 30. FIG. The blank plate 30 is made of paperboard such as cardboard. The basis weight of the blank plate 30 is, for example, 100-500 g/m ² .

The blank plate 30 includes the top plate 11 , the side plate 13 , the bottom plate 12 , the side plate 13 , and the paste margin piece 14 , which are successively arranged via a folding line 31 . A window portion 16 into which the flange portion 2b of the container body 2 is inserted is opened in the lower plate 12 . The entire periphery of the window portion 16 is arranged outside the outer edge of the flange portion 2 b of the container body 2 .

Each side plate 13 is provided with a folding line 13a and a cut 13b (first cut). The folding line 13a extends in the front-rear direction, and the side plate 13 can be folded in two along the folding line 13a. A pair of cuts 13b are provided in each of the side plates 13, and are arranged side by side in the front-rear direction across the folding lines 13a. Both ends of the notch 13b reach the upper and lower ends of the side plate 13 (the left and right ends in FIG. 3).

FIG. 4 shows a bottom view of the lid member 10 before being attached to the container body 2 (see FIG. 1). The cover member 10 is formed by folding the blank plate 30 along the folding line 13a and adhering the paste margin piece 14 to the end of the lower plate 12 by hot-melt or the like. At this time, the open end of the paste margin piece 14 is arranged on the periphery of the window portion 16 or outside the window portion 16 . In addition, since the side plate 13 is folded in half (mountain fold) on the folding line 13a, the upper plate 11 and the lower plate 12 are close to each other. Thereby, the lid member 10 is formed in a flat cylindrical shape.

The resin film 17 is made of a resin that can be thermally adhered to the flange portion 2b of the container body 2, covers the window portion 16, and is adhered to the lower surface of the lower plate 12 by the adhesion portion 18. As shown in FIG. As the resin film 17, various sealant films such as polyethylene films and polypropylene films, or laminates of sealant films and various base films such as PET films can be used. The sticking portion 18 sticks the periphery of the resin film 17 to the bottom plate 12 with an adhesive, a double-sided adhesive tape, or the like.

In addition, an annular half-cut cutting line 17 a is arranged between the adhesive portion 18 and the window portion 16 on the resin film 17 . The cutting line 17a is provided so as to surround the flange portion 2b. In this embodiment, the cutting line 17a is formed in a substantially rectangular shape with four curved corners along the flange portion 2b. At this time, one corner of the cutting line 17a is formed by a curve with a radius of curvature smaller than that of the flange portion 2b, forming a gripping portion 17b that is gripped when unsealing, as will be described later.

The lid member 10 having the above structure is placed on the flange portion 2b of the container body 2 as shown in FIG. As a result, the resin film 17 is thermally adhered to the flange portion 2b, and the container body 2 is hermetically sealed. At this time, since the open end of the paste margin piece 14 is arranged on the periphery of the window portion 16 or outside the window portion 16, it is arranged outside the outer edge of the flange portion 2b. Therefore, the thickness of the lid member 10 on the flange portion 2b can be reduced, and the resin film 17 can be securely thermally bonded.

When the lid member 10 thermally bonded to the flange portion 2b is pulled upward when the container 1 is unsealed, the resin film 17 adhered to the bottom plate 12 is cut along the half-cut cutting line 17a. As a result, the cover member 10 is removed while the peripheral portion of the resin film 17 remains on the lower plate 12 , and the window portion 16 is exposed on the lower surface of the cover member 10 . Further, as shown in the perspective view of FIG. 5, the inner side of the resin film 17 from the cutting line 17a is exposed on the container body 2. As shown in FIG.

Next, when the grip portion 17b is gripped and pulled upward, the resin film 17 is peeled off from the flange portion 2b. Thereby, the container 1 can be opened and the contents can be taken out.

As shown in the perspective view of FIG. 6, the cover member 10 removed from the container body 2 raises the side plate 13 folded in two to separate the upper plate 11 and the lower plate 12 . Then, the outer sides of the pair of cuts 13b of the side plate 13 are mountain-folded along the folding lines 13a, and the inner sides are valley-folded along the folding lines 13a. As a result, the locking portion 20 that engages with the flange portion 2b when the lid member 10 is resealed is formed.

7 and 8 show a perspective view and a front view of the container 1 at the time of resealing. The lid member 10 is fitted over the container body 2 where the contents remain, by inserting the flange portion 2b into the window portion 16 of the lower plate 12. As shown in FIG. Thereby, the container 1 is resealed and the contents can be stored. At this time, since the open end of the paste margin piece 14 is arranged on the periphery of the window portion 16 or outside the window portion 16, interference between the paste margin piece 14 and the flange portion 2b is prevented. Therefore, the flange portion 2b can be easily inserted into the window portion 16. As shown in FIG. In addition, since the entire periphery of the window portion 16 is arranged outside the outer edge of the flange portion 2b of the container body 2, the flange portion 2b can be inserted into the window portion 16 more easily.

Further, the lock portion 20 enters inside the outer edge of the flange portion 2b and engages with the flange portion 2b. As a result, the lid member 10 is prevented from coming off. Note that the lock portion 20 may be formed after the lid member 10 is fitted onto the container body 2 .

According to this embodiment, the lid member 10 for sealing the container body 2 is made of paper to which the resin film 17 is adhered, so that the environmental load can be reduced. Further, since the resin film 17 adhered to the lower surface plate 12 of the lid member 10 has an annular half-cut cut line 17a between the adhered portion 18 and the window portion 16, the cut line 17a is cut when the container 1 is unsealed. The window part 16 is exposed by being cut. This allows the container 1 to be easily resealed.

In addition, since the cut 13b (first cut) is provided in the side plate 13 to be folded in two, when the side plate 13 is raised and the inner side of the cut 13b is valley-folded, the locking portion 20 that can be engaged with the flange portion 2b is formed. be. As a result, the lid member 10 can be prevented from coming off when resealing.

In addition, since the open end of the adhesive margin piece 14 is arranged outside the outer edge of the flange portion 2b, the resin film 17 can be reliably thermally bonded to the flange portion 2b. Further, since the open end of the margin piece 14 is arranged on the periphery of the window portion 16 or outside the window portion 16, the flange portion 2b can be easily inserted into the window portion 16 at the time of resealing.

In addition, since the entire periphery of the window portion 16 is arranged outside the outer edge of the flange portion 2b, the flange portion 2b can be easily inserted into the window portion 16 at the time of resealing.

<Second embodiment>
Next, FIG. 9 is a bottom view of the lid member 10 of the container 1 of the second embodiment, showing a state before being attached to the container body 2 (see FIG. 1). For convenience of explanation, the same parts as those of the first embodiment shown in FIGS. 1 to 6 are given the same reference numerals. In this embodiment, a notch 12c is provided around the window portion 16 of the lower plate 12. As shown in FIG. Other parts are the same as in the first embodiment.

The peripheral edge of the window portion 16 provided in the lower plate 12 is arranged inside the outer edge of the flange portion 2 b of the container body 2 . The cut 12c (second cut) extends outward from the periphery of the window portion 16, and a plurality of cuts 12c are arranged in parallel in the circumferential direction.

A resin film 17 attached to the lower surface of the lower plate 12 has an annular cutting line 17a similar to that of the first embodiment. The cutting line 17 a is arranged between the window portion 16 and the sticking portion 18 . More specifically, the cutting line 17 a is arranged between the outer peripheral end of the cut 12 c of the lower plate 12 and the adhered portion 18 .

When the container 1 is opened, the lid member 10 is removed while the resin film 17 inside the cutting line 17a remains on the flange portion 2b and the resin film 17 outside the cutting line 17a remains on the lower plate 12.例文帳に追加Then, the contents are taken out by peeling the resin film 17 from the flange portion 2b.

When resealing the container 1, the side plate 13 folded in half is raised and the flange portion 2b is inserted into the window portion 16. As shown in FIG. Since a notch 12c is provided around the window portion 16, the window portion 16 is spread by the flange portion 2b. Also, the engaging pieces 12d formed between the cuts 12c enter inside the outer edge of the flange portion 2b. Therefore, it is possible to more reliably prevent the lid member 10 from coming off when resealing.

According to this embodiment, like the first embodiment, the environmental load can be reduced, and the container 1 can be easily resealed.

Moreover, the peripheral edge of the window portion 16 is arranged inside the outer edge of the flange portion 2b, and a plurality of cuts 12c (second cuts) extending outward from the peripheral edge of the window portion 16 are arranged in parallel in the circumferential direction. For this reason, the engaging pieces 12d that enter inside the outer edge of the flange portion 2b are formed between the notches 12c, so that the lid member 10 can be more reliably prevented from coming off when resealing.

<Third Embodiment>
Next, FIG. 10 is a bottom view of the lid member 10 of the container 1 of the third embodiment, showing a state before being attached to the container body 2 (see FIG. 1). For convenience of explanation, the same parts as those of the first embodiment shown in FIGS. 1 to 6 are given the same reference numerals. In this embodiment, the window portion 16 of the lower plate 12 is provided with an engaging piece 16a. Other parts are the same as in the first embodiment.

The engaging piece 16a is provided so as to protrude inward from the peripheral edge of the window portion 16 provided in the lower plate 12 . Accordingly, when the flange portion 2b of the container body 2 is inserted into the window portion 16 when resealing the container 1, the engaging piece 16a enters inside the outer edge of the flange portion 2b. Therefore, it is possible to more reliably prevent the lid member 10 from coming off when resealing.

According to this embodiment, like the first embodiment, the environmental load can be reduced and the container 1 can be easily resealed.

Further, since the engaging piece 16a projecting inwardly from the peripheral edge of the window portion 16 is provided, the lid member 10 can be more securely prevented from slipping off when resealing.

In the first to third embodiments, the front and rear surfaces of the lid member 10 are opened, but a flap covering the front and rear surfaces of the lid member 10 may be provided by bending the top plate 11 or the bottom plate 12 . At this time, the upper plate 11 and the lower plate 12 may be connected by the flap, and the flap may be folded in two along a folding line extending in the left-right direction.

INDUSTRIAL APPLICABILITY According to the present invention, it can be used as a container for storing viscous contents such as yogurt and jam.

REFERENCE SIGNS LIST 1 container 2 container body 2a opening 2b flange 10 lid member 11 upper plate 12 lower plate 12c cut (second cut)
12d engagement piece 13 side plate 13a folding line 13b notch (first notch)
14 Adhesive Margin Piece 16 Window Portion 16a Engaging Piece 17 Resin Film 17a Cutting Line 17b Holding Portion 18 Adhering Portion 20 Locking Portion 30 Blank Plate 31 Folding Line

Claims (7)

A cover material for sealing a bottomed tubular container body formed by bending a paper blank plate and having a flange portion around an opening, comprising a top plate and a top plate facing the top plate. A lower plate having a window portion through which the flange portion can be inserted, and a pair of side plates which are folded in two along first folding lines extending forward and backward by connecting the left and right ends of the upper plate and the left and right ends of the lower plate, respectively. and a resin film that covers the window and is adhered to the lower surface of the bottom plate by an adhesion portion, wherein the resin film is disposed between the window and the adhesion portion. A lid material having a cut line. 2. The lid member according to claim 1, wherein the side plate has a pair of first cuts arranged in parallel in the front-rear direction so as to intersect the fold line. 1. A paste margin piece continuously provided on one of said side faces and said bottom plate are adhered to each other, and an open end of said paste margin piece is arranged outside an outer edge of said flange portion. Or the cover material of Claim 2. 4. The lid member according to claim 1, wherein the entire periphery of the window portion is arranged outside the outer edge of the flange portion. A peripheral edge of the window portion is arranged inside an outer edge of the flange portion, and a plurality of second cuts extending outward from the peripheral edge of the window portion are arranged in parallel in the circumferential direction. 4. The lid material according to any one of 3. 4. The cover member according to claim 1, further comprising an engaging piece protruding inward from a peripheral edge of said window. A container comprising: the lid member according to any one of claims 1 to 6; and a container body sealed by the lid member by heat-bonding the resin film to the flange portion.

Images