WO2023108838A1 - 一种折叠式卷折边防漏纸质容器 - Google Patents

一种折叠式卷折边防漏纸质容器 Download PDF

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Publication number
WO2023108838A1
WO2023108838A1 PCT/CN2022/000084 CN2022000084W WO2023108838A1 WO 2023108838 A1 WO2023108838 A1 WO 2023108838A1 CN 2022000084 W CN2022000084 W CN 2022000084W WO 2023108838 A1 WO2023108838 A1 WO 2023108838A1
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Prior art keywords
paper container
folded
sides
connecting piece
sheet
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PCT/CN2022/000084
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English (en)
French (fr)
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张晓智
詹卡斯
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汕头市三马塑胶制品有限公司
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Publication of WO2023108838A1 publication Critical patent/WO2023108838A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/30—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with tongue-and-slot or like connections between sides and extensions of other sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • the utility model relates to a foldable paper container, in particular to a foldable leak-proof paper container with folded edges.
  • the current paper container includes a bottom surface and four sides, the shape of the bottom surface is a quadrilateral, and the lower sides of each side are respectively flexibly connected with the corresponding sides of the bottom surface; one side side between adjacent two sides is provided with a connection side, the connecting side is attached to the side of the other side by glue or hot-melt.
  • the connection structure of the adjacent two sides of this paper container is prone to gaps, and the degree of durability is not enough.
  • paper containers made of cardboard are often poorly designed, resulting in poor structural strength of the paper container.
  • the paper container When holding heavy or large amounts of food, the paper container may be bent or deformed , sometimes in severe cases, there is a risk of food spilling from the paper container.
  • the technical problem to be solved by the utility model is to provide a foldable leak-proof paper container with folded edges, which can prevent leakage, improve the overall structural strength of the paper container, and is sturdy and durable. safer.
  • a foldable leak-proof paper container with folded edges including a bottom surface and four sides, the shape of the bottom surface is a quadrangle, and the lower sides of each side are respectively connected to the corresponding sides of the bottom surface through corresponding first crease lines; its features In that: adjacent to the two sides, the side of one side is provided with an outer wrapping sheet integrally connected with the side, and the side of the other side is provided with an inner wrapping sheet integrally connected with the side, and the outer wrapping sheet is connected with the adjacent side.
  • a connecting piece is arranged at the gap, and the connecting piece is under the inner wrapping piece, the first side of the connecting piece is connected with the side of the outer wrapping piece through the corresponding second crease line, and the second side of the connecting piece
  • the corresponding third crease line is connected to the side of the adjacent side, and the lower side corner of the connecting sheet is connected to the corresponding corner of the bottom surface; the upper side of each side is provided with a folded edge; along each Crease lines are folded to form the paper container.
  • the above-mentioned bottom surface, side surface, outer wrapping sheet, inner wrapping sheet, and connecting sheet are all die-cut out of the required shape of the paper container from hard cardboard at one time, and the first crease line, the second crease line, and the third fold line are molded out.
  • the inner surface of the hard cardboard is compounded with a waterproof film layer; the outer surface of the hard cardboard is made of ordinary paper without a waterproof film layer, which is convenient for gluing on the outer surface of each cardboard.
  • the above-mentioned connecting piece fills the gap between the outer covering piece and the adjacent side completely, avoids the gap between the bottom surface and the side surface, and can play a good leak-proof role; , so that the upper side of the inner packaging sheet coincides with the upper side of the side.
  • the inner packaging sheet is attached to the inner surface of the adjacent side.
  • the upper side of the sheet is overlapped with the curling portion on the adjacent side and curled, which strengthens the connection between the inner surface and the outer surface, and the outer surface of the adjacent side is reinforced by the outer wrapping sheet, so that the paper quality
  • the side walls of the container are more closely fitted to avoid loosening, and the overall structural strength of the paper container is improved, making the paper container more durable and safer to use.
  • the crimping portion of the upper side of each side is formed into the crimping portion of the opening of the paper container after the crimping operation, which is convenient for multiple paper containers to be stacked up and down.
  • the shape of the side is a trapezoid with a short top and a long bottom, and the two sides of the side are provided with the outer wrapping sheet; the other two oppositely arranged In the side of the side, the shape of the side is a trapezoid with a long top and a short bottom, and the two sides of the side are provided with the inner wrapping pieces.
  • the connecting piece is made integrally with the bottom surface and two adjacent side surfaces.
  • the upper side of the outer wrapping sheet is provided with a reinforcing connecting piece integrally connected with the outer wrapping sheet.
  • the reinforcing connecting piece is bent inward during lamination, so that the outer surface of the reinforcing connecting piece is bonded to the outer surface of the adjacent side through the adhesive layer, which can strengthen the bonding of the outer covering piece and the outer surface of the adjacent side. ability.
  • the connecting piece is provided with a first notch opening upward.
  • the provision of the first notch can prevent the connecting piece from wrinkling during lamination, resulting in a convex bump on the side wall of the paper container.
  • the shape of the first notch is U-shape or V-shape.
  • the curling part includes a first strip-shaped curling and a second strip-shaped curling, and the lower side of the first strip-shaped curling passes through the fourth crease line and the edge of the side surface.
  • the upper sides are connected, and the upper side of the first curling edge is connected with the lower side of the second curling edge through the fifth crease line.
  • the second crimping strip and the first crimping strip are rolled outward in turn to form the crimping part of the paper container, so as to improve the compressive strength of the crimping of the opening of the paper container.
  • the foldable leak-proof paper container with folded folds can prevent leaks, improve the overall structural strength of the paper container, and is durable and safer to use.
  • Fig. 1 is the structural representation of the unfolded state of the specific embodiment of the utility model
  • Fig. 2 is a structural schematic diagram of a folded state of a specific embodiment of the utility model.
  • the foldable leak-proof paper container with folded edges in this embodiment includes a bottom surface 1 and four sides 2, the shape of the bottom surface 1 is a quadrilateral, and the lower sides of each side 2 pass through corresponding
  • the first crease line 3 is connected to the corresponding side of the bottom surface 1; adjacent to the two sides 2, the side of one side 2 is provided with an outer wrapping sheet 4 integrally connected with the side 2, and the side of the other side 2
  • An inner bag 5 integrally connected with the side 2 is provided, a gap 6 is provided between the outer bag 4 and the adjacent side 2, a connecting piece 7 is provided at the notch 6, and the connecting piece 7 is located below the inner bag 5, and the connecting piece 7
  • the first side of the connecting sheet 7 is connected to the side of the outer cover sheet 4 through the corresponding second crease line 8, and the second side of the connecting sheet 7 is connected to the side of the adjacent side 2 through the corresponding third crease line 9,
  • the lower side corners of the connecting sheet 7 are connected to the corresponding corners of the bottom surface 1; the upper sides of
  • the bottom surface 1, the side surface 2, the outer wrapping sheet 4, the inner wrapping sheet 5, and the connecting sheet 7 are all die-cut out of the hard cardboard into the shape required by the paper container at one time, and the first crease line 3 and the second fold line are molded out. Crease line 8 and the third crease line 9.
  • the inner surface of the hard cardboard is compounded with a waterproof film layer; the outer surface of the hard cardboard is made of ordinary paper and is not compounded with a waterproof film layer, which is convenient for the outer surface of each cardboard Apply glue.
  • the shape of the side 2 is a trapezoid with a short top and a long bottom, and the two sides of the side 2 are provided with the outer wrapping sheet 4; , the shape of the side 2 is a trapezoid with a long top and a short bottom, and the inner wrapping pieces 5 are provided on both sides of the side 2 .
  • the areas of two adjacent sides 2 can complement each other and form a paper container.
  • the connecting piece 7 is made integrally with the bottom surface 1 and the two adjacent side surfaces 2 .
  • the connecting sheet 7 By integrally connecting the connecting sheet 7 with the bottom surface 1 and two adjacent side surfaces 2 , unnecessary gaps in the paper container can be avoided.
  • a reinforcing connecting piece 11 is provided on the upper side of the outer wrapping piece 4 .
  • the reinforcing connecting piece 11 is bent inwardly during bonding, so that the outer surface of the reinforcing connecting piece 11 and the outer surface of the adjacent side 2 are bonded through the adhesive layer, and the connection between the outer covering sheet 4 and the adjacent side 2 can be strengthened.
  • the conformability of the outer surface is provided on the upper side of the outer wrapping piece 4 .
  • the connecting piece 7 is provided with a first notch 71 with an upward opening, and the shape of the first notch 71 is U-shaped.
  • the provision of the first notch 71 can prevent the connecting piece 7 from wrinkling during lamination, resulting in a convex bump on the side wall of the paper container.
  • the hemming part 10 includes a first strip-shaped curling 101 and a second strip-shaped curling 102, the lower side of the first strip-shaped curling 101 is connected to the upper side of the side 2 through the fourth crease line 12 , the upper side of the first curling edge 101 is connected to the lower side of the second curling edge 102 through the fifth crease line 13 .
  • the second strip-shaped curling 102 and the first strip-shaped curling 101 are sequentially rolled outward to form the curling part of the paper container, so as to improve the compressive strength of the opening curl of the paper container.
  • the connecting sheet 7 fills the gap 6 between the outer sheet 4 and the adjacent side 2 completely, avoids the gap between the bottom surface 1 and the side 2, and can play a good leak-proof effect; in addition, because the inner sheet 5 is from The sides of the side 2 protrude outwards, so that the upper side of the inner bag 5 coincides with the upper side of the side 2.
  • the inner bag 5 is attached to the inner surface of the adjacent side 2, and two adjacent sides
  • the hemming part 10 on the side 2 needs to be aligned so that the upper side of the inner package sheet 5 overlaps with the hemming part 10 on the adjacent side 2 and performs hemming, which strengthens the connection between the inner surface and the outer surface.
  • the upper outer wrapping sheet 4 reinforces the outer surface of the adjacent side 2, so that the side walls of the paper container fit closer together, avoid loosening, improve the overall structural strength of the paper container, and make the paper container more durable , it is safer to use.
  • the crimping portion 10 on the upper side of each side 2 forms the crimping portion of the opening of the paper container after the crimping operation, which is convenient for multiple paper containers to be stacked up and down.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)

Abstract

一种折叠式卷折边防漏纸质容器，包括底面（1）和四个侧面（2），底面（1）的形状为四边形，各个侧面（2）的下侧边分别通过相应第一折痕线（3）与底面（1）相应的侧边连接；相邻两个侧面（2），一个侧面（2）的侧边设有与该侧面（2）一体连接的外包片（4），另一个侧面（2）的侧边设有与该侧面（2）一体连接的内包片（5），外包片（4）与相邻侧面（2）之间设有缺口（6），缺口（6）处设有连接片（7），连接片（7）处于内包片（5）的下方，连接片（7）的第一侧边通过相应第二折痕线（8）与外包片（4）的侧边连接，连接片（7）的第二侧边通过相应第三折痕线（9）与相邻侧面（2）的侧边连接，连接片（7）的下侧边角与底面（1）相应的边角连接；各个侧面（2）的上侧边均设有卷折边部（10）；沿各折痕线折叠形成纸质容器。该容器能够防漏，可提高整体结构强度，坚固耐用，使用更加安全。

Description

一种折叠式卷折边防漏纸质容器 技术领域
本实用新型涉及一种折叠式纸质容器，尤其是一种折叠式卷折边防漏纸质容器。
背景技术
目前，为了降低食物盛装容器清洗的成本及人力，又为了使用方便及卫生等考虑，有很多食物生产产家使用一次性纸质容器来盛装食物。
在生产一次性纸质容器的过程中，由于要考虑纸质容器的可回收再利用及符合环保需求等特性，通常采用硬纸板制成纸质容器。目前的纸质容器，包括底面和四个侧面，底面的形状为四边形，各个侧面的下侧边分别与底面相应的侧边柔性连接；相邻两个侧面之间的一个侧面侧边设有连接边，连接边通过胶水或热熔贴合在另一个侧面的侧边上。这种纸质容器的相邻两个侧面连接结构容易产生缝隙，坚固耐用程度不够，当纸质容器盛装温度较高的液体食物时，连接边上的胶水易被高温的液体食物软化，使得液体食物从缝隙中流出，一不小心就会烫伤使用者。
另外，硬纸板制成的纸质容器往往因设计的不良，导致纸质容器的结构强度不佳的问题，当盛装较重或较多的食物时，可能会造成纸质容器的弯折或变形，有时严重时会产生食物由纸质容器中溢出的风险。
发明内容
本实用新型要解决的技术问题是提供一种折叠式卷折边防漏纸质容器，这种折叠式卷折边防漏纸质容器能够防漏，提高纸质容器整体的结构强度，坚固耐用，使用更加安全。
为了解决上述技术问题，本实用新型采用的技术方案如下：
一种折叠式卷折边防漏纸质容器，包括底面和四个侧面，底面的形状为四边形，各个侧面的下侧边分别通过相应的第一折痕线与底面相应的侧边连接；其特征在于：相邻两个所述侧面，一个侧面的侧边设有与该侧面一体连接的外包片，另一个侧面的侧边设有与该侧面一体连接的内包片，外包片与相邻侧面之间设有缺口，缺口处设有连接片，连接片处于内包片的下方，连接片的第一侧边通过相应的第二折痕线与外包片的侧边连接，连接片的第二侧边通过相应的第三折痕线与相邻侧面的侧边连接，连接片的下侧边角与所述底面相应的边角连接；各个侧面的上侧边均设有卷折边部；沿各折痕线折叠形成所述纸质容器。
通常，上述底面、侧面、外包片、内包片、连接片均由硬质纸板一次性模切出纸质容器所需的形状并模压出第一折痕线、第二折痕线、第三折痕线而成，硬质纸板的内表面上 复合有防水膜层；硬质纸板的外表面为普通纸质，并未复合有防水膜层，便于各纸板外表面进行贴胶。
折叠纸质容器时，首先在硬质纸板上裁剪出纸质容器所需要的形状，然后对底面、侧面、外包片、内包片以及连接片之间进行折痕线的压痕，接着沿折痕线折叠，将连接片的外表面与相邻侧面的外表面贴合，连接片的内表面与外包片的部分内表面贴合，外包片的其它部分内表面贴合在相邻侧面的外表面上，内包片贴合在相邻侧面的内表面上，并通过胶层贴合形成纸质容器半成品状态，最后将纸质容器的各个侧面的卷折边部向外进行卷边或折边操作即完成。
上述连接片将外包片与相邻侧面之间的缺口填补完整，避免底面与侧面之间产生缝隙，能够起到很好的防漏作用；另外，由于内包片是从侧面的侧边上往外凸，使得内包片的上侧边与该侧面的上侧边重合，贴合时，内包片贴合在相邻侧面的内表面上，相邻两个侧面上的卷折边部需要对齐，使得内包片的上侧边与相邻侧面上的卷折边部重合并进行卷边，加强了内表面与外表面的连接，再加上外包片对相邻侧面的外表面进行加固，从而使得纸质容器的侧壁贴合更紧密，避免松脱，提高纸质容器整体的结构强度，使得这种纸质容器更加坚固耐用，使用更加安全。各个侧面上侧边的卷折边部通过卷边操作后形成纸质容器开口的卷边部，便于多个纸质容器进行上下堆叠。
作为本实用新型的优选方案，其中两个相对设置的所述侧面中，侧面的形状为上短下长的梯形，该侧面的两个侧边均设有所述外包片；另两个相对设置的侧面中，侧面的形状为上长下短的梯形，该侧面的两个侧边均设有所述内包片。通过这种设置，使得相邻的两个侧面的面积能够互补并围成纸质容器。
作为本实用新型的优选方案，所述连接片与所述底面、相邻的两个侧面一体制成。通过将连接片与底面、相邻的两个侧面一体连接，能够避免纸质容器产生多余的缝隙。
作为本实用新型的优选方案，所述外包片的上侧边设有与外包片一体连接的加强连接片。通过这种设置，贴合时加强连接片向内弯折，使加强连接片的外表面与相邻侧面的外表面通过胶层贴合，能够加强外包片与相邻侧面的外表面的贴合能力。
作为本实用新型的优选方案，所述连接片上设有开口向上的第一缺口。设置第一缺口能够防止贴合时连接片发生褶皱导致纸质容器的侧壁上起外凸包。
作为本实用新型进一步的优选方案，所述第一缺口的形状为U形或V形。
作为本实用新型的优选方案，所述卷折边部包括第一条形卷边和第二条形卷边，第一条形卷边的下侧边通过第四折痕线与所述侧面的上侧边连接，第一条形卷边的上侧边通过 第五折痕线与第二条形卷边的下侧边连接。卷边时，依次将第二条形卷边、第一条形卷边向外卷形成纸质容器的卷边部，提高纸质容器开口卷边的抗压强度。
本实用新型与现有技术相比，具有如下优点：
这种折叠式卷折边防漏纸质容器能够防漏，提高纸质容器整体的结构强度，坚固耐用，使用更加安全。
附图说明
图1是本实用新型具体实施例展开状态的结构示意图；
图2是本实用新型具体实施例折叠状态的结构示意图。
具体实施方式
下面结合附图和具体实施例对本实用新型进行具体描述。
如图1-2所示，本实施例中的折叠式卷折边防漏纸质容器，包括底面1和四个侧面2，底面1的形状为四边形，各个侧面2的下侧边分别通过相应的第一折痕线3与底面1相应的侧边连接；相邻两个所述侧面2，一个侧面2的侧边设有与该侧面2一体连接的外包片4，另一个侧面2的侧边设有与该侧面2一体连接的内包片5，外包片4与相邻侧面2之间设有缺口6，缺口6处设有连接片7，连接片7处于内包片5的下方，连接片7的第一侧边通过相应的第二折痕线8与外包片4的侧边连接，连接片7的第二侧边通过相应的第三折痕线9与相邻侧面2的侧边连接，连接片7的下侧边角与所述底面1相应的边角连接；各个侧面2的上侧边均设有卷折边部10；沿各折痕线折叠形成所述纸质容器。
通常，上述底面1、侧面2、外包片4、内包片5、连接片7均由硬质纸板一次性模切出纸质容器所需的形状并模压出第一折痕线3、第二折痕线8、第三折痕线9而成，硬质纸板的内表面上复合有防水膜层；硬质纸板的外表面为普通纸质，并未复合有防水膜层，便于各纸板外表面进行贴胶。
其中两个相对设置的所述侧面2中，侧面2的形状为上短下长的梯形，该侧面2的两个侧边均设有所述外包片4；另两个相对设置的侧面2中，侧面2的形状为上长下短的梯形，该侧面2的两个侧边均设有所述内包片5。通过这种设置，使得相邻的两个侧面2的面积能够互补并围成纸质容器。
连接片7与所述底面1、相邻的两个侧面2一体制成。通过将连接片7与底面1、相邻的两个侧面2一体连接，能够避免纸质容器产生多余的缝隙。
外包片4的上侧边设有加强连接片11。通过这种设置，贴合时加强连接片11向内弯折，使加强连接片11的外表面与相邻侧面2的外表面通过胶层贴合，能够加强外包片4与 相邻侧面2的外表面的贴合能力。
连接片7上设有开口向上的第一缺口71，第一缺口71的形状为U形。设置第一缺口71能够防止贴合时连接片7发生褶皱导致纸质容器的侧壁上起外凸包。
卷折边部10包括第一条形卷边101和第二条形卷边102，第一条形卷边101的下侧边通过第四折痕线12与所述侧面2的上侧边连接，第一条形卷边101的上侧边通过第五折痕线13与第二条形卷边102的下侧边连接。卷边时，依次将第二条形卷边102、第一条形卷边101向外卷形成纸质容器的卷边部，提高纸质容器开口卷边的抗压强度。
折叠纸质容器时，首先在硬质纸板上裁剪出纸质容器所需要的形状，然后对底面1、侧面2、外包片4、内包片5以及连接片7之间进行折痕线的压痕，接着沿折痕线折叠，将连接片7的外表面与相邻侧面2的外表面贴合，连接片7的内表面与外包片4的部分内表面贴合，外包片4的其它部分内表面贴合在相邻侧面2的外表面上，内包片5贴合在相邻侧面2的内表面上，并通过胶层贴合形成纸质容器半成品状态，最后将纸质容器的各个侧面2的卷折边部10向外进行卷边或折边操作即完成。
上述连接片7将外包片4与相邻侧面2之间的缺口6填补完整，避免底面1与侧面2之间产生缝隙，能够起到很好的防漏作用；另外，由于内包片5是从侧面2的侧边上往外凸，使得内包片5的上侧边与该侧面2的上侧边重合，贴合时，内包片5贴合在相邻侧面2的内表面上，相邻两个侧面2上的卷折边部10需要对齐，使得内包片5的上侧边与相邻侧面2上的卷折边部10重合并进行卷边，加强了内表面与外表面的连接，再加上外包片4对相邻侧面2的外表面进行加固，从而使得纸质容器的侧壁贴合更紧密，避免松脱，提高纸质容器整体的结构强度，使得这种纸质容器更加坚固耐用，使用更加安全。各个侧面2上侧边的卷折边部10通过卷边操作后形成纸质容器开口的卷边部，便于多个纸质容器进行上下堆叠。
此外，需要说明的是，本说明书中所描述的具体实施例，其各部分名称等可以不同，凡依本实用新型专利构思所述的构造、特征及原理所做的等效或简单变化，均包括于本实用新型专利的保护范围内。本实用新型所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离本实用新型的结构或者超越本权利要求书所定义的范围，均应属于本实用新型的保护范围。

Claims (7)

  1. 一种折叠式卷折边防漏纸质容器，包括底面和四个侧面，底面的形状为四边形，各个侧面的下侧边分别通过相应的第一折痕线与底面相应的侧边连接；其特征在于：相邻两个所述侧面，一个侧面的侧边设有与该侧面一体连接的外包片，另一个侧面的侧边设有与该侧面一体连接的内包片，外包片与相邻侧面之间设有缺口，缺口处设有连接片，连接片处于内包片的下方，连接片的第一侧边通过相应的第二折痕线与外包片的侧边连接，连接片的第二侧边通过相应的第三折痕线与相邻侧面的侧边连接，连接片的下侧边角与所述底面相应的边角连接；各个侧面的上侧边均设有卷折边部；沿各折痕线折叠形成所述纸质容器。
  2. 如权利要求1所述的折叠式卷折边防漏纸质容器，其特征在于：其中两个相对设置的所述侧面中，侧面的形状为上短下长的梯形，该侧面的两个侧边均设有所述外包片；另两个相对设置的侧面中，侧面的形状为上长下短的梯形，该侧面的两个侧边均设有所述内包片。
  3. 如权利要求1所述的折叠式卷折边防漏纸质容器，其特征在于：所述连接片与所述底面、相邻的两个侧面一体制成。
  4. 如权利要求1所述的折叠式卷折边防漏纸质容器，其特征在于：所述外包片的上侧边设有与外包片一体连接的加强连接片。
  5. 如权利要求1所述的折叠式卷折边防漏纸质容器，其特征在于：所述连接片上设有开口向上的第一缺口。
  6. 如权利要求5所述的折叠式卷折边防漏纸质容器，其特征在于：所述第一缺口的形状为U形或V形。
  7. 如权利要求1所述的折叠式卷折边防漏纸质容器，其特征在于：所述卷折边部包括第一条形卷边和第二条形卷边，第一条形卷边的下侧边通过第四折痕线与所述侧面的上侧边连接，第一条形卷边的上侧边通过第五折痕线与第二条形卷边的下侧边连接。
PCT/CN2022/000084 2021-12-13 2022-05-13 一种折叠式卷折边防漏纸质容器 WO2023108838A1 (zh)

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JP2007062827A (ja) * 2005-09-01 2007-03-15 Fuji Hoso Shiki Kk 開口端の閉鎖構造及びこれを用いたシート状体からなる容器
JP2013001453A (ja) * 2011-06-22 2013-01-07 Kyodo Printing Co Ltd 折り畳み可能なカートン
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