CN218490154U - Packaging container - Google Patents

Abstract

The utility model provides a packaging container, it includes the box body, basement membrane and epiphragma, the box body is made by the sheet, including box body and last frame down, the box body is formed by the sheet is folding down, go up the frame and form continuous loop configuration, go up the upper surface of some or whole and formation box body of the upper surface of box body under the frame cover, it includes annular main part piece and one or more from the folding splicing of main part piece inside extension to go up the frame, the main part piece covers partly or whole of the upper surface of box body down, the folding splicing covers the part of the internal surface of the lateral wall of box body down along the folding back between its and the main part piece, the basement membrane covers the internal surface and the upper surface of box body, the epiphragma covers on the basement membrane, thereby form the accommodating space who is used for holding by the storage article between basement membrane and epiphragma. According to the utility model discloses a packaging container simple structure, it is sealed effectual, the reliability is high, is convenient for retrieve, is favorable to the environmental protection.

Description

Packaging container

Technical Field

The utility model relates to a packaging container, concretely relates to through sheet folding and the packaging container who forms.

Background

In packaging of e.g. fresh produce, packaging containers made of e.g. cardboard or the like, including recyclable materials, are desirable for e.g. reducing environmental pollution.

However, how to make a packaging container made of paper, for example, have a stable structure, good sealing performance and low cost is a problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome or at least alleviate the deficiencies of the prior art and provide a packaging container.

The utility model provides a packaging container, it includes the box body, basement membrane and epiphragma, the box body is made by the sheet, including box body and last frame down, the box body is formed by the sheet is folding down, go up the frame and form continuous loop configuration, go up the upper surface of some or whole and formation box body of the upper surface of box body under the frame cover, it includes annular main part piece and one or more from the folding splicing of main part piece inside extension to go up the frame, the main part piece covers partly or whole of the upper surface of box body down, the folding splicing covers the part of the internal surface of the lateral wall of box body down along the folding back between its and the main part piece, the basement membrane covers the internal surface and the upper surface of box body, the epiphragma covers on the basement membrane, thereby form the accommodating space who is used for holding by the storage article between basement membrane and epiphragma.

According to a preferred embodiment, the box is formed by folding a single sheet, the lower box having a fold between it and the upper border, the upper border covering the upper surface of the lower box in a manner folded along the fold and forming the upper surface of the box.

According to a preferred embodiment, the box and the upper rim are made of different sheets.

According to a preferred embodiment, the sheet material is cardboard.

According to a preferred embodiment, the upper rim is glued to the upper surface of the lower box.

According to a preferred embodiment, each folding tab has a main portion and a wing portion extending from the main portion along one or both sides of the inner profile side of the upper rim.

According to a preferred embodiment, the lower case includes a case bottom and a plurality of case flaps provided on an outer peripheral side of the case bottom, the case flaps forming creases with the case bottom, and in a case where the lower case is unfolded, gaps are formed between adjacent case flaps, and in a case where the lower case is fold-formed, adjacent side flaps of some or all of the plurality of case flaps contact or are connected together and define an opening portion of the lower case on a side opposite to the case bottom.

According to a preferred embodiment, each box flap comprises an upper flap and a side flap, distinguished by a fold, which connect the box bottom and the upper flap, the side flaps being formed as side walls of the lower box body, and the upper flap being formed as part of the lower box body connected to the upper frame.

According to a preferred embodiment, the folding tabs cover adjacent portions between adjacent side guards.

According to a preferred embodiment, the upper baffle is superposed with the upper rim to form a flange around the side wall, and a portion of the bottom membrane is connected to the flange.

According to a preferred embodiment, the upper baffle is connected to the upper rim.

According to a preferred embodiment, the upper baffle is glued to the upper rim.

According to a preferred embodiment, the bottom of the cassette is formed as a polygon without right-angled sides, each side of the polygon being connected to one cassette flap.

According to a preferred embodiment, the bonding force between the top film and the bottom film is smaller than the bonding force between the bottom film and the box body, so that the packaging container can be opened in such a way that the top film is separated from the bottom film without breaking the connection of the bottom film to the box body, and the packaging container can be disposed of after use in such a way that the bottom film is separated from the box body.

According to a preferred embodiment, the bottom film is bonded to the housing and the top film is bonded to the bottom film.

According to a preferred embodiment, the peripheral edge of the box is formed with a notch for the bottom film, and the tear-open area of the bottom film protrudes out of the box at the notch for the bottom film.

According to a preferred embodiment, the peripheral edge of the box is formed with a notch for the top film, the tear-open area of the top film extending out of the box at the notch for the top film, the tear-open area of the top film not being connected to the bottom film.

According to a preferred embodiment, the main body panel is attached to the upper surface of the lower case, and the folding tabs are attached to the inner surfaces of the sidewalls of the lower case.

According to a preferred embodiment, the folding tabs cover and connect adjacent portions between adjacent side guards.

The packaging container according to the application has the advantages of simple structure, good sealing effect, high reliability, convenient recovery and environmental protection.

Drawings

Fig. 1 is a schematic exploded perspective view of a packaging container according to an embodiment of the present application.

Fig. 2 is a perspective view illustrating a folded state of a box of a packaging container according to an embodiment of the present application.

Fig. 3 is a schematic view of a case of a packaging container according to an embodiment of the present application in an unfolded state.

Fig. 4 is a schematic view of a folding process of the box body shown in fig. 3.

Fig. 5 is a perspective view illustrating a folded state of a box of a packaging container according to another embodiment of the present application.

Description of reference numerals:

10, a box body; 10a first notch; 10b a second notch; 10f, flanging;

11 a lower box body; 111 a box bottom; 112a box baffle; an elongated portion 1121; a short bar portion 1122; a tab 1123;112a upper baffle plate; 112b side baffle plates; 12, arranging a frame; a folding tab 121; a body 1211; a wing portion 1212; a body sheet 122;

20a base film; 30 top films; 20a carrier film tear-away area; 30a top film tear-away zone; g gap.

Detailed Description

Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the invention, and is not intended to exhaust all possible ways of practicing the invention, nor is it intended to limit the scope of the invention.

The packaging container (also simply referred to as container) according to the present invention will be described with reference to fig. 1 to 5. For convenience, the opening of the container is referred to as being in an upper orientation and the opposite, bottom of the container is referred to as being in a lower orientation. It will be appreciated that the up-down orientation may vary with the use of the container.

Referring to fig. 1, a packaging container according to the present invention includes a case body 10, a bottom film 20, and a top film 30.

The cassette 10 is made of sheet material (see fig. 3-4), meaning that the basic material of the cassette is a sheet material, which may also include other auxiliary materials such as adhesives. The sheet material here is for example cardboard or a fibre board different from cardboard. Optionally, the sheet material herein is a recyclable material, or a material that is readily degradable.

The bottom film 20 covers the inner surface and the upper surface of the case body 10, so that the paper case body 10 is not easily damaged by absorbing liquid components (e.g., water or oil) carried by stored objects (e.g., food); meanwhile, the structural strength of the box body 10 is also enhanced by the bottom film 20, so that the box body 10 is not easily deformed.

The base film 20 is, for example, a plastic film made of, for example, any one of polyethylene and polypropylene (but not limited thereto). The primary coating 20 may be a composite coating formed of a plurality of layers.

The base film 20 is formed in a shape conforming to the inner contour of the case body 10, for example, by means of thermoforming. The base film 20 may be bonded to the case body 10, for example, by an adhesive (including glue and tape, for example), or the base film 20 may be bonded to the case body 10 in such a manner that the portions are melted after heating.

It should be understood that the following references to joining or bonding both include joining using an adhesive and also include joining two parts together in such a manner that at least one of the two parts being joined solidifies after being melted by heating.

The bottom film 20 is also partially covered with a top film 30. The top film 30 is, for example, a plastic film made of, for example, any one of polyethylene, polypropylene, and polyvinyl chloride (pvc), but not limited thereto. The top film 30 has a sheet shape, a peripheral edge of the top film 30 is connected to a peripheral edge of the bottom film 20, and non-adhered regions of the top film 30 and the bottom film 20 define a receiving space for receiving stored objects.

The bottom film 20 and the top film 30 are both transparent films, for example.

Alternatively, the bonding force between the bottom film 20 and the top film 30 is smaller than the bonding force between the bottom film 20 and the case body 10. When the stored object needs to be taken out, the top film 30 can be separated from the bottom film 20 by tearing, so that the bottom film 20 is not jointly separated from the box body 10.

Referring to fig. 2, the folded box 10 is generally polygonal in shape. Preferably, the case 10 is formed to be rounded at corners so that the edges of the case 10 are rounded to prevent a user from being easily injured. However, it will be understood by those skilled in the art that the folded box 10 may have other shapes, such as a shape approximating a circle or an ellipse, according to actual needs.

Next, a detailed structure and a folding method of one embodiment of the case 10 will be described with reference to fig. 3 to 4.

The box 10 comprises a lower box 11 and an upper border 12 and is integrally formed by folding a single sheet of material, with a fold between the lower box 11 and the upper border 12. The lower case 11 is used for forming the main body shape of the case 10 by folding; the upper frame 12 covers the upper surface of the lower box 11 in a manner folded along the fold, for example in an adhesive connecting manner, and forms the upper surface of the box 10, so that a continuous connecting area without gaps in the circumferential direction is formed on the upper surface of the box 10 for connecting the bottom film, preferably also the top film.

Alternatively, the lower box 11 and the upper frame 12 of the box 10 are made of different sheets, and the upper frame 12 covers the upper surface of the lower box 11 and forms the upper surface of the box 10, for example, by means of an adhesive connection, so that a continuous connection area without a gap in the circumferential direction is formed on the upper surface of the box 10 for connecting the bottom or top film.

Specifically, the lower case 11 includes a case bottom 111, for example, in a polygonal shape without square sides, and the case bottom 111 in the present embodiment is an octagon having two long sides, two short sides, and four corner sides. The cassette baffles 112 circumferentially surround the cassette bottom 111 and each side of the cassette bottom 111 is connected to one cassette baffle 112. Specifically, in the illustrated example, the cartridge shutter 112 includes two long strip portions 1121 corresponding to two long sides of the cartridge bottom 111, two short strip portions 1122 corresponding to two short sides of the cartridge bottom 111, and four tab portions 1123 corresponding to four corner sides of the cartridge bottom 111. When the lower case 11 is unfolded, a gap G is formed between the adjacent elongated portion 1121, short elongated portion 1122, and sheet-like portion 1123 of the case shutter 112 in the circumferential direction of the lower case 11. The elongated portion 1121, the short elongated portion 1122, and the sheet-like portion 1123 of the box bottom 111 are folded back on one surface of the box bottom 111 (hereinafter, referred to as forward folding) to form a peripheral wall of the lower box 11, which is a substantially octagonal peripheral wall in the illustrated example, by forming a fold between the elongated portion 1121, the short elongated portion 1122, and the sheet-like portion 1123 of the box bottom 112 and the box shutter 112.

The strip 1121, the short strip 1122, and the tab 1123 of the cartridge shutter 112 respectively include an upper shutter 112a and a side shutter 112b connected to each other, the side shutter 112b being located between the cartridge bottom 111 and the upper shutter 112a and connecting the upper shutter 112a with the cartridge bottom 111, wherein the upper shutter 112a and the side shutter 112b are distinguished by creases.

By folding the side flaps 112b forward and folding the upper flaps 112a backward (folding the upper flaps 112a toward the other side of the box bottom 111), i.e., in the case of fold-forming the lower box body 11, the plurality of side flaps 112b are formed as side walls that are connected in the circumferential direction of the lower box body 11, wherein adjacent side flaps of some or all of the box flaps are connected together, for example, in a snap-fit or adhesive manner, or are only in contact with each other, either unconnected. The side of the side wall opposite to the case bottom 111 defines an opening portion of the lower case 11. Here, for example, the opening is rectangular.

The plurality of upper baffle plates 112a are connected to each other and form an annular region of a connecting slit, which is, for example, an approximately rectangular ring, around the outer periphery of the side wall.

The upper frame 12 has a continuous, seamless, annular shape corresponding to the shape surrounded by the folded upper baffle 112a, and is, for example, an approximately rectangular annular frame. Preferably, the upper rim 12 is formed as a rounded corner at the outer corners of the rim. In particular, the top rim 12 comprises an annular main body piece 122 and folded tabs 121 extending inwardly from the main body piece 122, here folded tabs 121 extending inwardly from the main body piece 122 at one or more, preferably all, of the inner corners of the main body piece 122. The folded tabs 121 each have a body portion 1211 and two wing portions 1212 each extending laterally from the body portion 1211 along the inner contour of the upper rim 12. The body portion 1211 of the folded tab 121 has a shape corresponding to the side flap 112b of the sheet portion 1123 of the cartridge flap 112.

After the folding of the box flap 112 of the lower box 11 is completed and the lower box 11 is given its final configuration, the upper frame 12 is folded back toward the lower box 11 and the body piece 122 overlaps the annular region formed by the plurality of upper flaps 112a, forming a cuff 10f with a flat upper surface and without gaps. At the same time, the main body 1211 of the folded tab 121 is further folded toward the side barrier 112b of the box body 11, particularly the sheet-shaped portion 1123 and finally completely covers the corresponding side barrier 112b, and the two wing portions 1212 of the folded tab 121 then cover the gap G between the side barrier 112b and the adjacent side barriers 112b of the elongated portion 1121 and the short elongated portion 1122, so that the inside of the box body 10 after being folded is tightly seamless in the circumferential direction, thereby providing high connection strength and making the sealing effect of the receiving space good.

The area where the cuff 10f is located is the area where the top film 30 and the bottom film 20 are joined, or the cuff 10f provides the basis for the shaping of the top film 30 and the bottom film 20, wherein a part of the bottom film 20 is connected to the cuff 10f and the top film 30 is further connected to the bottom film 20 in the area where the cuff 10f is located. The flatness of the flange 10f determines how firmly the top film 30 and the bottom film 20 are joined, or the sealing degree of the receiving space defined by the top film 30 and the bottom film 20. In the overlapped cuff 10f, the main body sheet 122 of the upper frame 12 formed as a continuous annular area without a gap is placed on the upper layer, the main body sheet 122 is directly connected with the bottom film 20, and the top film 30 and the bottom film 20 are connected with the area of the upper frame 12, so that the connection between the bottom film 20 and the upper frame 12 and the connection between the bottom film 20 and the top film 30 are both tight and seamless, the connection strength is high, and the sealing effect of the accommodating space is good.

Preferably, after folding, the bottom surface of the lower box body 11 (the box bottom 111 in the present embodiment) and the flange 10f are parallel to each other.

The upper frame 12 and a box shutter 112 are attached to the edge of the upper shutter 112 a. The upper frame 12 is formed in a ring shape having an opening in the middle. Preferably, the annular area formed by the upper baffle 112a does not exceed the area covered by the main body piece 122 of the upper frame 12; preferably, the annular region formed by the upper baffle 112a matches (and more preferably is identical) to the shape of the body piece 122 of the upper bezel 12.

By folding the upper frame 12 in the forward direction, the main body piece 122 of the upper frame 12 can be overlapped with the annular region formed by the upper baffle 112a of the lower case 11. The lower case 11 has a fixed shape by connecting the upper frame 12 to the annular region formed by the upper baffle 112a, for example, using an adhesive.

The upper frame 12 provides a complete and continuous upper surface without gaps for the box body 10, and the upper surface provides a basis for the attachment of the bottom film 20 and the top film 30, so that the connection between the bottom film 20 and the box body 10 and the connection between the bottom film 20 and the top film 30 are tight, and the sealing effect of the container is good.

Optionally, notches are formed in one or more corners of the case 10. Referring to the embodiment of fig. 5, a first notch 10a and a second notch 10b are formed at two diametrically opposite corners of the box 10, respectively, that is, a first notch 10a and a second notch 10b are formed at two diametrically opposite corners of the lower box 11 and the upper frame 12, respectively.

The base film 20 partially protrudes from the area of the box body 10 at the first notch 10a, so that a base film tear-off area 20a is formed at this notch for the base film, which facilitates grasping. Preferably, the bottom film 20 does not extend beyond the area of the case body 10 at the second notch 10b. The top film 30 partially protrudes from the region where the box body 10 is located at the second notch 10b, thereby forming a top film tear-off region 30a at the notch for the top film for easy grasping. Preferably, the top film tear area 30a is not attached to the bottom film 20. Thus, when it is necessary to take out the stored article, the top film 30 may be separated from the bottom film 20 by grasping the top film tear region 30a and pulling up the top film 30. When the packaging container needs to be discarded, the carrier film 20 may be separated from the case body 10 by grasping the carrier film tear area 20a and pulling up the carrier film 20, for example, in order to perform garbage sorting.

The number and the arrangement position of the notches can be changed according to actual needs.

Alternatively, the case body 10 may not have a notch, but the bottom film tear area 20a and the top film tear area 30a may be formed to protrude from the case body 10, thereby facilitating the peeling of the bottom film 20 and the top film 30.

The utility model discloses at least, one of following advantage has:

(i) The utility model discloses a packaging container simple structure can form the box body structure that does not have the clearance through simple folding and fixed connection with the help of folding splicing 121 to the side shield of sheetlike portion 1123 and the cover of possible clearance around it for basement membrane 20 and the apical membrane 30 that adhere to on box body 10 are connected closely.

(ii) The upper frame 12 also provides a fixed base for the cassette baffles 112, facilitating the bonding of multiple cassette baffles 112 in a defined position to form a stable shaped cassette body.

(iii) The bottom film tear area 20a and the top film tear area 30a facilitate separation of the bottom film 20 and the top film 30, respectively, facilitating removal of the stored items and sorting of the waste when the packaging container is discarded.

Of course, the present invention is not limited to the above embodiments, and those skilled in the art can make various modifications to the above embodiments of the present invention without departing from the scope of the present invention. For example:

(i) The case bottom 111 of the case body 10 according to the present invention is not limited to the octagonal shape, and may be, for example, another polygonal shape. Preferably, the bottom 111 of the box has no right angles or sharp corners, which makes it easy to evacuate the packaging container during the sealing packaging process.

(ii) Although in the illustrated embodiment the first notch 10a and the second notch 10b are located at the corners of the flange 10f, this is not essential and the first notch 10a and/or the second notch 10b may be located at other positions of the flange 10f. The present invention does not limit the shapes of the first notch 10a and the second notch 10b.

(iii) The adjacent box flaps 112 may be positioned with their edges aligned without overlap or partially overlapping each other after folding; the overlapping areas may simply be stacked together or may be joined together, for example by adhesive bonding, or by snap-fit construction. Covering it by the folded tab 121, in particular by means of a connection, for example by adhesive bonding, increases the dimensional stability and the tightness and also improves the aesthetics.

(iv) Although in this embodiment the box 10 is formed from a single sheet of cardboard folded over. In other possible embodiments, the upper frame 12 and the lower box 11 may also belong to two pieces of cardboard, respectively, and are joined together by means of gluing.

Claims (19)

1. A packaging container is characterized by comprising a box body, a bottom film and a top film,

the box body is made of sheet materials and comprises a lower box body and an upper frame, the lower box body is formed by folding the sheet materials,

the upper frame is formed into a continuous annular structure, the upper frame covers a part or all of the upper surface of the lower box body and forms the upper surface of the box body, the upper frame comprises an annular main body piece and one or more folding connecting pieces extending inwards from the main body piece, the main body piece covers a part or all of the upper surface of the lower box body, and the folding connecting pieces cover a part of the inner surface of the side wall of the lower box body after being folded along creases between the folding connecting pieces and the main body piece,

the bottom film covers the inner surface and the upper surface of the box body, and the top film covers the bottom film, so that an accommodating space for accommodating stored objects is formed between the bottom film and the top film.

2. The packaging container according to claim 1, wherein the box is formed by folding a single sheet of material, the lower box having a fold between it and the upper border, the upper border covering the upper surface of the lower box in a folded manner along the fold and forming the upper surface of the box.

3. The packaging container according to claim 1, wherein the lower box and the upper rim are made of different sheets.

4. The packaging container according to claim 1, wherein the sheet material is paperboard.

5. The packaging container according to claim 1, wherein the upper frame is adhered to an upper surface of the lower case.

6. The packaging container of claim 1 wherein each of said folding tabs has a main portion and a wing portion extending from said main portion along one or both sides of the inner contour side of the upper rim.

7. The packaging container according to any one of claims 1 to 5, wherein the lower box body includes a box bottom portion and a plurality of box baffle plates provided on an outer peripheral side of the box bottom portion, a fold being formed between the box baffle plates and the box bottom portion,

under the condition that the lower box body is not folded, a gap is formed between the adjacent box baffles,

in the case where the lower box body is fold-formed, adjacent side flaps of some or all of the plurality of box flaps are in contact or joined together and define an opening portion of the lower box body on a side opposite to the box bottom.

8. The packaging container according to claim 7, wherein each of the box flaps includes an upper flap and a side flap distinguished by a fold,

the side baffle connects the box bottom and the upper baffle,

the side guards form side walls of the lower case, and the upper guard forms a portion of the lower case connected to the upper frame.

9. The packaging container of claim 7 wherein said folding tab covers adjacent portions between adjacent said side flaps.

10. The packaging container as claimed in claim 8, characterized in that the upper flap is superposed with the upper rim to form a flange around the side wall,

and one part of the bottom film is connected with the flanging.

11. The packaging container of claim 8 wherein said top flap is connected to said top rim.

12. The packaging container as claimed in claim 8, wherein the top flap is bonded to the top frame.

13. A packaging container according to claim 7, wherein said box bottom is formed as a polygon without right-angled sides, each side of said polygon being connected to one of said box flaps.

14. The packaging container according to any one of claims 1 to 6 wherein the bonding force between the top film and the bottom film is smaller than the bonding force between the bottom film and the box body, so that the packaging container can be opened by separating the top film from the bottom film without breaking the connection of the bottom film to the box body, and the packaging container can be disposed after use by separating the bottom film from the box body.

15. The packaging container according to claim 14 wherein the bottom film is bonded to the box body and the top film is bonded to the bottom film.

16. A packaging container according to any one of claims 1 to 6, characterized in that the peripheral edge of the box body is formed with a notch for a base film, the tear-open area of the base film protruding out of the box body at the notch for a base film.

17. The packaging container according to any one of claims 1 to 6, wherein a peripheral edge of the box body is formed with a notch for a top film, a tear region of the top film protrudes out of the box body at the notch for the top film, and the top film tear region is not connected to the bottom film.

18. The packaging container according to any one of claims 1 to 6 wherein the body panel is attached to an upper surface of the lower case, and the folded tab is attached to an inner surface of a side wall of the lower case.

19. The packaging container of claim 7 wherein said folding tabs overlie and connect adjacent portions between adjacent said side flaps.

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