JP2022143277A - Lid material and container using the same - Google Patents

Abstract

To provide a lid material that can reduce environmental loads.SOLUTION: A lid material, which is fitted to a cylindrical container main body with a bottom formed in a rectangular shape in a planar view, is formed by folding back a blank paper made of paper. The lid material comprises a rectangular top plate part that covers an opening formed at an upper end of the container main body and an engagement part connected to an outer edge portion of the top plate part and extended in a direction orthogonal to the top plate part. The engagement part has a window portion penetrating in a thickness direction of the engagement part and a locking piece connected to an edge portion of the window portion and protruded toward the top plate part in the window portion.SELECTED DRAWING: Figure 4

Description

The present invention relates to a lid member and a container in which the lid member is fitted over a container body.

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 resin such as polyethylene or polyethylene terephthalate, and is thermally 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.

An object of the present invention is to provide a container that can reduce the environmental load.

In order to achieve the above object, the lid member according to the present invention is fitted onto a bottomed cylindrical container body that is rectangular in plan view. The lid member is formed by bending a blank plate made of paper, and includes a rectangular top plate portion covering an opening formed at the upper end of the container body, and a top plate portion connected to an outer edge portion of the top plate portion. and an engaging portion extending in a direction orthogonal to the The engaging portion includes a window portion penetrating through the engaging portion in a thickness direction, and a locking piece connected to a peripheral edge portion of the window portion and protruding into the window portion toward the top plate portion. have.

According to this configuration, the engaging portion includes a pair of first engaging plates connected to the long sides of the top plate portion and a pair of second engaging plates connected to the short sides of the top plate portion. have. The second engagement plate is fixed to the first engagement plate. The engaging portions are arranged in pairs on at least one of both of the pair of first engaging plates and both of the pair of second engaging plates.

The present invention also provides a container having the lid member configured as described above, wherein the lid member is fitted onto a cylindrical container body with a bottom, and a flange portion extending outward from an upper opening of the container body is sealed. and a resin sheet. The lid member is held by the container body by locking the locking piece of the engaging portion to the lower surface of the flange portion.

ADVANTAGE OF THE INVENTION According to this invention, the container which can reduce an environmental load can be provided.

1 is a perspective view of an example of a container having a lid according to the present invention; FIG. It is an exploded perspective view of a container. It is a figure which shows the blank board which expanded the cover material. It is the perspective view seen from the bottom of the lid|cover material formed by bending|folding a blank plate. FIG. 4 is a side view of a container with a lid attached; It is sectional drawing cut|disconnected by the surface which expands right and left of the container before opening a resin sheet. FIG. 4 is a cross-sectional view of the container with the locking piece raised, taken along a plane extending to the left and right. FIG. 4 is a side view of the container showing a state in which the lid member is opened and the resin sheet is unsealed; FIG. 4 is a cross-sectional view of the container in which the cover member is closed so that the top plate portion is in contact with the flange portion, and the container is cut along a laterally expanding plane. FIG. 4 is a cross-sectional view taken along a laterally expanding plane of the container in a state in which the lid member resealed the container body.

A container 100 having a lid member 20 according to one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an example of a container 100 having a lid member 20 according to the invention. FIG. 2 is an exploded perspective view of the container 100. FIG. In this specification, the direction of gravity is defined as downward, and the opposite direction is defined as upward. In addition, the lateral direction of the container body 10, which will be described later, in a plan view will be described as the front-rear direction.

<Container 100>
As shown in FIGS. 1 and 2, the container 100 has a container body 10 and a lid member 20. As shown in FIGS. Contents (not shown) are accommodated inside the container 100 . Here, the content is assumed to be food (for example, gel such as yogurt, jelly, jam, etc.), but is not limited to this. For example, the contents may be powdered foods such as salt, sugar and spices, or solid foods such as processed meat. Contents other than food, such as lubricants such as grease, hairdressing agents, fragrances, and wet wipes, may also be accommodated.

<Container body 10>
The container main body 10 has a bottomed tubular shape capable of accommodating contents in an internal accommodation space 10S. In the container 100 of the present embodiment, for example, the container body 10 may have a configuration in which paper is used as a base material and a coating layer having water resistance, gas barrier properties, etc. is provided inside. Examples of water-resistant coating layers include resin layers made of polyethylene (PE), polyethylene terephthalate (PET), and the like. Moreover, an aluminum layer can be mentioned as the coating layer having a gas barrier property.

Note that the container body 10 may be made of a thermoplastic resin such as polypropylene (PP) or polystyrene (PS). Further, the container body 10 is not limited to these resins, and a wide range of resins that are easy to mold can be used. Moreover, when the container 100 is used to store food, at least the inner surface of the container body 10 is made of a material that is non-toxic or substantially non-toxic to the human body.

As shown in FIGS. 1 and 2 , the container body 10 has a bottom portion 11 , side wall portions 12 and flange portions 13 . The side wall portion 12 has a tubular shape extending vertically. The side wall portion 12 is formed by bending a single plate-shaped member into a ring shape and adhering both ends thereof. The container body 10 has a cylindrical shape with a bottom, and the lower portion of the side wall portion 12 is closed by the bottom portion 11 . The bottom portion 11 is fixed at a position shifted upward from the lower end portion of the side wall portion 12 (see FIG. 2). By configuring in this way, the rigidity of the bottom portion 11 can be increased. In addition, when the container body 10 is an integrally molded resin body, the bottom portion 11 may be connected to the lower end portion of the side wall portion 12 .

An opening 14 is formed in the upper end portion of the side wall portion 12 for taking in and out the content accommodated inside the accommodation space 10S (see FIG. 3, etc.). The opening 14 vertically faces the bottom portion 11 . As shown in FIG. 2, opening 14 is larger than bottom 11, but is not so limited. The flange portion 13 extends outward from the upper end of the side wall portion 12 . That is, the flange portion 13 is arranged outside the opening 14 .

The container body 10 has a rectangular shape in plan view. In the container body 10, the outer shape of the bottom portion 11, the outer shape and inner shape of the side wall portion 12 (the outer shape of the opening 14), and the outer shape of the flange portion 13 are all curved corners and adjacent corners in plan view. It has a substantially rectangular shape with two straight line portions that are parallel to each other, and are substantially similar in shape to each other. Each shape described above is generally rectangular. However, the shape is not limited to this, and may be a substantially elliptical shape, a circular shape, a substantially regular polygonal shape, or the like.

<Lid material 20>
The lid member 20 will be described with reference to the drawings. FIG. 3 is a diagram showing the blank plate 200 with the lid member 20 unfolded. FIG. 4 is a bottom perspective view of the lid member 20 formed by bending the blank plate 200. FIG. In addition, in FIG. 3, the flange portion 13 of the container body 10 is indicated by a broken line. Hereinafter, description will be made with the horizontal direction as the longitudinal direction and the vertical direction as the lateral direction, with reference to the state shown in FIG. In FIG. 3, folding lines L1 to L4 are indicated by one-dot chain lines, and cutting lines Ct1 to Ct3 are indicated by two-dot chain lines.

As shown in FIGS. 1, 2, etc., the lid member 20 is arranged on the top of the container body 10 . The cover member 20 is formed by forming cutting lines Ct1 to Ct3 on a portion of the blank plate 200 and folding along the folding lines L1 to L4. In addition, as the folding line, for example, a shape that protrudes from one surface of the blank plate 200 and is recessed from the other surface can be mentioned, but it is not limited to this.

As the blank board 200, for example, high-quality paper, kraft paper, imitation paper, coated paper, or the like is used. The basis weight of the blank plate 200 can be, for example, 100 g/m ² to 500 g/m ² . The blank plate 200 has higher rigidity than the resin sheet 30 described later. Therefore, the container 100 can be placed above the lid member 20 . That is, the containers 100 can be arranged one on top of the other.

As shown in FIG. 4 , the lid member 20 has a top plate portion 21 and an engaging portion 22 . The top plate portion 21 has a rectangular shape with curved corners in plan view. The top plate portion 21 has a pair of long side portions 21a and 21b and a pair of short side portions 21c and 21d. The shape of the top plate portion 21 is such that it overlaps with the flange portion 13 of the container body 10 .

As shown in FIGS. 3 and 4 , the engaging portion 22 has two first engaging plates 23 . The two first engagement plates 23 are arranged side by side in the longitudinal direction of the lid member 20 . The lid member 20 also has two second engagement plates 24 . The two second engagement plates 24 are arranged side by side in the lateral direction of the lid member 20 . The engaging portion 22 is cylindrical and formed by alternately connecting the first engaging plates 23 and the second engaging plates 24 in the circumferential direction.

As shown in FIG. 3 , the folding line L1 of the blank plate 200 is arranged so as to overlap the long side portions 21 a and 21 b of the top plate portion 21 . A second engaging plate 24 is connected to the long side portions 21a and 21b of the top plate portion 21 via a folding line L1.

The folding lines L2 are arranged at both ends of each of the pair of short side portions 21c and 21d of the top plate portion 21 in the short direction. A cutting line Ct1 is formed in the center of the short sides 21c and 21d in the width direction. That is, the folding lines L2 are arranged on both sides of the cutting line Ct1. Cutting lines Ct2 extending along the pair of short side portions 21c and 21d of the top plate portion 21 are provided on both outer sides of the folding line L2. A pair of short side portions 21c and 21d of the top plate portion 21 are connected to the first engaging plate 23 via a folding line L2.

The first engaging plate 23 is connected to the top plate portion 21 so as to be foldable along a folding line L2. Note that the cutting line Ct3 is provided to separate the curved portion of the corner of the top plate portion 21 from the first engagement plate 23 at the time of bending, and the top plate portion 21 and the curved portion are separated. In this case, the cutting line Ct3 is omitted.

As shown in FIG. 3, in the blank plate 200, the first engagement plate 23 has an elongated shape extending in the lateral direction. Gate-shaped cutting lines Ct<b>1 and Ct<b>2 are provided in the central portion of the first engaging plate 23 . More specifically, the cutting line Ct1 is provided so as to form a trapezoidal upper base portion that tapers toward the top plate portion 21 side. Note that the cutting line Ct1 has a curved shape protruding outward, but may have a linear shape or a broken line shape. The cutting line Ct2 is provided so as to form the oblique side of the trapezoid. A folding line L4 is provided at a portion corresponding to the bottom of the trapezoid formed by the cutting line Ct1. Both ends of the cutting line Ct1 are connected to the folding line L2.

The first engaging plate 23 is cut along the cutting lines Ct1 and Ct2, and is connected to the window 231 formed by folding along the folding line L4, and the folding line L4, that is, the edge of the window 231. It has a locking piece 232 extending toward the top plate portion 21 within the window portion 231 . The locking piece 232 rotates (tilts) in the thickness direction of the first engaging plate 23 about the folding line L4. Fixed pieces 233 are connected to both ends of the first engaging plate 23 via a folding line L3.

The blank plate 200 is folded along the folding line L2. As a result, the first engaging plates 23 are vertically provided from the short side portions 21 c and 21 d of the top plate portion 21 . At this time, both ends of the first engagement plate 23 are bent along the outer shape of the top plate portion 21 . Then, the fixed piece 233 is bent inward along the folding line L3.

Further, the blank plate 200 is folded along the folding line L1. As a result, the second engagement plate 24 is vertically provided from the long side portions 21 a and 21 b of the top plate portion 21 . At this time, the second engaging plate 24 is arranged outside the fixing piece 233 of the first engaging plate 23 . By bending the fixed piece 233 along the folding line L3, it is possible to bring the outer surface of the fixed piece 233 into contact with the inner surface of the second engagement plate 24 .

Even if the fixing piece 233 is not bent along the folding line L3, the fixing piece 233 does not need to be bent along the folding line L3 if the outer surface of the fixing piece 233 can come into contact with the inner surface of the second engagement plate 24. Then, the outer surfaces of the fixing pieces 233 at both ends of each first engaging plate 23 are fixed to both ends of the inner surface of the second engaging plate 24, respectively.

Further, as the adhesion of the fixing piece 233 to the second engagement plate 24, for example, adhesion by an adhesive can be mentioned, but it is not limited to this. For example, a wide variety of fixing methods, such as hot-melt fixing, can be used to firmly fix the fixing piece 233 to the second engaging plate 24 .

As a result, the engaging portion 22 is formed by alternately arranging the two first engaging plates 23 and the two second engaging plates 24 in the circumferential direction and connecting them in an annular shape. The engaging portion 22 is connected to the top plate portion 21 . As shown in later-described FIG. 5 , the end portion of the first engagement plate 23 is arranged in contact with the outer peripheral portion of the curved portion of the top plate portion 21 . Thereby, the engaging portion 22 is formed so as to extend in the orthogonal direction from the outer edge portion of the top plate portion 21 .

The lid member 20 is thus formed into a cylindrical shape with a bottom by bending the flat blank plate 200 . In the cover member 20 , a printed layer (not shown) may be provided on the upper surface of the top plate portion 21 and the outer surface of the engaging portion 22 . The printed layer forms information about the content contained in the containing space 10S of the container body 10, the image of the product, and the like. In addition, when printing is unnecessary, the printing layer may be omitted.

<Resin sheet 30>
As shown in FIG. 2 and the like, the container 100 has a resin sheet 30 that covers the upper end of the container body 10 and is sealed by the flange portion 13 to seal the accommodation space 10S of the container body 10 . As the resin sheet 30, for example, a PE resin, a PE resin film, a PET resin film, or a laminate thereof, or a resin film having functions necessary for sealing such as sealability, water resistance, and gas barrier properties, or a laminate thereof is widely adopted. can do. The sealing of the resin sheet 30 to the flange portion 13 is performed, for example, by heat sealing, but a sealing method other than heat sealing may be employed.

In the container 100 , the resin sheet 30 is heat-sealed to seal the container body 10 while the contents are stored in the storage space 10</b>S of the container body 10 .

FIG. 5 is a side view of the container 100 with the lid member 20 attached. FIG. 6 is a cross-sectional view of the container 100 before the resin sheet 30 is unsealed, taken along a laterally expanding plane. As shown in FIGS. 5 and 6 , the lid member 20 is attached to the container body 10 with the resin sheet 30 sealed to the flange portion 13 . More specifically, the bottomed cylindrical lid member 20 is arranged above the flange portion 13 sealed to the resin sheet 30 of the container body 10 . Thereby, the engaging portion 22 covers the side wall portion 12 and the flange portion 13 from the outside (see FIGS. 5 and 6).

By pushing the locking piece 232 of each first engaging plate 23 , the locking piece 232 is locked to the bottom surface of the flange portion 13 . The first engaging plates 23 are arranged side by side in the longitudinal direction. Since locking pieces 232 provided at both longitudinal ends of the engaging portion 22 of the lid member 20 are locked to the lower surface of the flange portion 13, the lid member 20 is held by the container body 10 so as not to come off.

Next, operations for opening and resealing the container 100 will be described with reference to the drawings. FIG. 7 is a cross-sectional view of the container 100 with the locking piece 232 raised, taken along a laterally expanding plane. FIG. 8 is a side view of the container 100 showing a state in which the lid member 20 is opened and the resin sheet 30 is unsealed. FIG. 9 is a cross-sectional view of the container 100 in which the lid member 20 is closed so that the top plate portion 21 is in contact with the flange portion 13, taken along a laterally expanding plane. FIG. 10 is a cross-sectional view of the container 100 in a state in which the lid member 20 resealed the container body 10 along a laterally expanding plane.

In the following description, closing the opening 14 of the container body 10 that has been opened by peeling the resin sheet 30 from the flange portion 13 is referred to as resealing. When resealing with the lid member 20, the lid member 20 is locked so as not to be unintentionally opened.

As shown in FIGS. 5 and 6 , in the container 100 , the resin sheet 30 is sealed on the upper surface of the flange portion 13 . The opening 14 of the container body 10 is sealed with a resin sheet 30 .

As a result, the resin sheet 30 has water resistance, gas barrier properties, etc., so foreign matter such as moisture, dust, and dust is prevented from entering the housing space 10S, and a hygienic state is maintained at the time of sealing. In addition, outflow of gases such as air and water vapor in the accommodation space 10S to the outside is also suppressed. As a result, drying of the contents is suppressed, and odor leakage to the outside or transfer of the odor to the contents can be suppressed.

When opening the container 100, first, the lid member 20 is opened. For this purpose, the locking pieces 232 of both the first engaging plates 23 of the lid member 20 are raised vertically (see FIG. 7). As a result, the engaging portion 22 of the lid member 20 is disengaged from the flange portion 13 .

As a result, the lid member 20 is moved upward from the container body 10, and the lid member 20 is removed from the upper portion of the container body 10 (see FIG. 8). Then, as shown in FIG. 8, the resin sheet 30 is peeled off from the flange portion 13 with the lid member 20 removed. In the container 100 of the present embodiment, one of the corners of the resin sheet 30 may have a curved gripping portion (not shown) having a smaller radius than the other corners. The resin sheet 30 is peeled off from the flange portion 13 of the container body 10 by pinching the grip portion and lifting it upward. As a result, the container body 10 is unsealed (see FIG. 8).

By opening the container body 10 , the contents stored inside the storage space 10</b>S of the container body 10 can be taken out from the opening 14 . The resin sheet 30 is completely removed from the flange portion 13 of the container body 10 . After the resin sheet 30 is peeled off from the flange portion 13, the resin sheet 30 is no longer necessary.

Depending on the contents, the leftovers taken out may be stored in the storage space 10S. In such a case, the container body 10 is resealed with the lid member 20 to close the opening 14 .

Next, resealing of the container body 10 with the lid member 20 will be described. As shown in FIG. 9 , the cover member 20 is attached to the top of the container body 10 so that the engaging portion 22 surrounds the outside of the flange portion 13 and the bottom surface of the top plate portion 21 is in contact with the top surface of the flange portion 13 .

Then, while the lower surface of the top plate portion 21 is in contact with the flange portion 13, the locking pieces 232 of both the first engagement plates 23 are folded inward. Thereby, the locking piece 232 is locked to the lower surface of the flange portion 13 (see FIG. 10).

In this manner, the lid member 20 can close the opening 14 of the container body 10 once opened. That is, the lid member 20 can reseal the container body 10 .

The locking pieces 232 arranged at both ends in the longitudinal direction of the lid member 20 are locked to the lower surface of the flange portion 13 , thereby restricting the upward movement of the lid member 20 . That is, the lid member 20 is held by the container body 10 in a state of closing the upper opening 14 of the container body 10 . Each of the two locking pieces 232 is locked to the flange portion 13 so that the lid member 20 is locked to the container body 10 at the time of resealing. As a result, even if an external force such as vibration or impact acts on the container 100, the lid member 20 is difficult to open.

By resealing the container body 10 with the lid member 20 in this manner, it is possible to prevent foreign matter such as water (liquid), dust, etc. from entering the housing space 10S of the container body 10 . As a result, even after the package is opened, the content can be stored while preventing contamination by foreign matter.

Further, after the container body 10 is resealed with the lid member 20, the lid member 20 allows the container body 10 to be unsealed according to the above-described procedure (see FIGS. 6 to 8). In other words, by using the lid member 20, the container 100 can be opened and resealed multiple times.

In addition, since the lid member 20 can be resealed, it is possible to reduce the waste amount of resin and reduce the environmental load compared to a structure having a separate resin outer lid.

It should be noted that the present invention is not limited to the configuration described above, and various modifications are possible, and configurations obtained by appropriately combining technical means disclosed in different configurations are also within the technical scope of the present invention. included.

INDUSTRIAL APPLICABILITY According to the present invention, the container can be used as a container that contains food or the like as a content and has a lid that can be opened and closed multiple times.

REFERENCE SIGNS LIST 100 container 10 container main body 10S accommodation space 11 bottom 12 side wall 13 flange 14 opening 200 blank plate 20 lid member 21 top plate 21a long side 21b long side 21c short side 21d short side 211 projecting portion 22 fixing portion 221 adhesive portion 222 movable portion 23 first engaging portion 231 slit 24 second engaging portion 241 slit 30 resin sheet Ct1 cutting line Ct2 cutting line L1 folding line L2 folding line L3 folding line L4 folding line

Claims (3)

A cover member that is fitted to a bottomed cylindrical container body that is rectangular in plan view,
Formed by folding a paper blank plate,
a rectangular top plate covering an opening formed at the upper end of the container body;
an engaging portion connected to an outer edge portion of the top plate portion and extending in a direction orthogonal to the top plate portion;
has
The engaging portion is
a window portion penetrating in the thickness direction of the engaging portion;
a locking piece that is connected to the edge of the window and protrudes into the window toward the top plate. The engaging portion is
a pair of first engagement plates connected to the long sides of the top plate;
a pair of second engagement plates connected to the short sides of the top plate,
The second engagement plate is fixed to the first engagement plate,
2. The lid material according to claim 1, wherein the engaging portions are arranged in pairs on at least one of both the pair of first engaging plates and both the pair of second engaging plates. A lid material according to claim 1 or claim 2;
a cylindrical container body with a bottom on which the lid member is fitted;
a resin sheet sealed to a flange extending outward from an opening at the top of the container body,
A container, wherein the lid member is held by the container body by locking the locking piece of the engaging portion to the lower surface of the flange portion.

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