WO2021232803A1 - 纸箱及纸箱坯料 - Google Patents

纸箱及纸箱坯料 Download PDF

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Publication number
WO2021232803A1
WO2021232803A1 PCT/CN2020/140241 CN2020140241W WO2021232803A1 WO 2021232803 A1 WO2021232803 A1 WO 2021232803A1 CN 2020140241 W CN2020140241 W CN 2020140241W WO 2021232803 A1 WO2021232803 A1 WO 2021232803A1
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WIPO (PCT)
Prior art keywords
flap
carton
fold line
blank
side wall
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PCT/CN2020/140241
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English (en)
French (fr)
Inventor
刘成军
李晓宇
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成都市裕同印刷有限公司
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Publication of WO2021232803A1 publication Critical patent/WO2021232803A1/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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
    • B65D5/441—Reinforcements
    • 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
    • B65D5/02—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/08—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed by inward-folding of portions of body, e.g. flaps, interconnected by, or incorporating, gusset folds
    • 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

Definitions

  • the invention relates to a carton, in particular to a carton folding structure for enhancing the compressive strength of the corners.
  • the technical problem to be solved by the present invention is to provide a carton and a carton blank that are not easy to crack at the corners.
  • the carton blank includes at least three side wall blank surfaces that are used to enclose and form the side walls of the carton and are arranged in sequence, and the side wall blank surfaces connected to the tail end for connection On the lap surface of the side wall blank surface of the head and tail, the two sides of each side wall blank surface are respectively connected with a swing cover, and the swing cover on the same side is folded to form the bottom or top surface of the carton.
  • the joints between the flaps and two adjacent flaps are respectively provided with flap fold lines with opposite folds, that is, the flap's positive fold line and the flap's reverse fold line.
  • the connection between the second flap and the flap/lap surface is respectively provided with flap fold lines with opposite folds, that is, flap positive fold line and flap reverse fold line, in the flap positive fold line and flap reverse fold line Through holes are provided at the intersections.
  • the circumferential contour line passing through the through hole is a smooth curve.
  • the through hole is a cylindrical hole.
  • the diameter of the through hole is not less than twice the thickness of the carton blank.
  • the through hole is a variable diameter hole, the large diameter end of which is located on the outside of the folded carton on the bad side of the carton, and the small diameter end is on the inside of the folded carton on the bad side of the carton, and its maximum diameter is not less than twice the thickness of the carton blank.
  • the first flap is located on one of the flaps and is an integral structure with the flap.
  • the second flap is located on the lap surface and is an integral structure with the lap surface.
  • the length of the flap positive fold line and the flap reverse fold line are the same.
  • the length of the positive fold line of the flap is not less than twice the thickness of the carton blank and not more than 1/3 of the flap width.
  • At least one of the positive fold line of the flap and the reverse fold line of the flap is a discontinuous fold line.
  • the longitudinal positive fold lines, the transverse positive fold lines, and the flap reverse fold lines are continuous fold lines, and the flap positive fold lines are discontinuous fold lines.
  • the invention also provides a carton formed on the basis of the aforementioned carton blank.
  • the lap surface needs to be fixedly connected to the blank surface of the side wall of the head.
  • the carton is a rectangular parallelepiped carton, the sidewall blanks have four sides, and the angle between the positive fold line of the flap and the reverse fold line of the flap is 45°, and the positive fold line of the flap lies in the longitudinal direction on the carton blank surface.
  • the extension of the positive polyline is a rectangular parallelepiped carton, the sidewall blanks have four sides, and the angle between the positive fold line of the flap and the reverse fold line of the flap is 45°, and the positive fold line of the flap lies in the longitudinal direction on the carton blank surface. The extension of the positive polyline.
  • each flap width of each flap is equal to 1/2 of the width of the carton, each first flap is integrated with the shorter flap, and each second flap is integrated with the lap surface Structure.
  • the said flap width refers to the distance from the corresponding transverse positive fold line to the top of the flap.
  • the shorter flap shape is approximately an isosceles trapezoid.
  • both sides of the short side of the shorter flap are rounded to facilitate folding the shorter flap into the inner side of the longer flap.
  • the overlapping surface and the side wall blank surface of the head are bonded or nailed.
  • a folding corner reinforcement structure is formed.
  • a flap of an appropriate size can increase the force and bending moment of the corner, absorb the force deformation, and enhance the compression resistance of the carton.
  • the thickness of the absorption corner is superimposed to improve the stress conditions, effectively improve the corner damage of the cartons in stacking storage and logistics transportation, improve the compressive strength of the cartons, and realize the compression resistance by changing the blank shape of the cartons
  • the increase in strength will basically not increase the cost.
  • Fig. 1 is a schematic diagram of a carton blank of Example 1 of the present invention.
  • Fig. 2 is a partial enlarged view of the J section in Fig. 1.
  • Fig. 3 is a partial enlarged view of section K in Fig. 1.
  • Fig. 4 is a schematic plan view of connecting the overlapping surface in Fig. 1 to the side wall blank surface of the head and then unfolding.
  • Fig. 5 is a partial enlarged view of the L section in Fig. 4.
  • Fig. 6 is a schematic diagram (first state) of the forming process of the carton of Example 1 of the present invention.
  • Fig. 7 is a schematic diagram (second state) of the forming process of the carton of Example 1 of the present invention.
  • Fig. 8 is a schematic structural diagram (closed state) of the carton of Embodiment 1 of the present invention.
  • Fig. 9 is a schematic diagram of a carton blank of Example 2 of the present invention.
  • the marks in the figure are: 1-side wall blank surface, 2-overlap surface, 3- swing cover, 4-round corner, 5-first flap, 6-through hole, 7-longitudinal positive fold line, 8-horizontal positive Fold line, 9-flap positive fold line, 10-flap reverse fold line, 11-A side, 12-B side, 13-C side, 14-D side, 15-second flap, 16-lapped side transversely positive Folding line, 20- flap and flap overlap area, 30-lap surface and flap overlap area, 31-A1 flap, 32-A flap, 33-B1 flap, 34-B flap, 35 -C1 flap, 36-C flap, 37-D1 flap, 38-D flap, 40- flap, overlap surface and flap overlap area, 51-A1 flap, 52-A flap, 53-B1 flap, 54-B flap, 55-C1 flap, 56-C flap, 57-D1 flap, 58-D flap.
  • the sides of the carton include A side 11, B side 12, C side 13, and D side 14.
  • Side A 11 is opposite to side C 13, and side B 12 and side D 14 are opposite.
  • 2 Connected to one end of D surface 14 for connecting A surface 11 and D surface 14 during molding.
  • a surface 11 has A flap 32 and A1 flap 31 respectively
  • B surface 12 has a B flap 34 on both sides.
  • B1 swing cover 33, C surface 13 on both sides are C swing cover 36
  • D surface 14 on both sides are D swing cover 38, D1 swing cover 37
  • the D surface 14 is collectively called the side wall blank surface on the carton blank.
  • a longitudinal positive fold line 7 between each side wall blank surface and between the side wall blank surface and the overlapping surface.
  • a horizontal positive fold line 8 is arranged between the covers.
  • the width S2 of the overlapping surface 2 is smaller than the width S1 of the side wall blank surface of the head, namely the A surface 11, and the height P2 of the overlapping surface 2 is greater than the height P1 of each side wall blank surface 1 ,
  • On both sides of the lap surface 2 there are lap surface transverse positive fold lines 16 respectively, and the flaps on both sides are respectively folded to form the bottom surface and the top surface of the carton.
  • a flap 52 for connection is provided at the bottom of the flap between A flap 32 and B flap 34. 34.
  • the connecting B flap 54 is provided at the root joint of the C flap 36
  • the connecting C flap 54 is provided at the root connection between the C flap 36 and the D flap 38.
  • a connecting D flap 58 is provided at the joint between the D flap 38 and the lap surface 2 at the root of the flap
  • a D flap 58 is provided at the joint between the A1 flap 31 and the B1 flap 33
  • A1 flap 51 for connection a B1 flap 53 for connection is provided at the joint between the B1 flap 33 and the C1 flap 35 at the root of the flap.
  • a C1 flap 55 for connection is provided at the joint of the lid root
  • a D1 flap 57 for connection is provided at the joint of the flap root between the D1 flap 37 and the lap surface 2, wherein A1 flap 51, A flap The flap 52, B1 flap 53, B flap 54, C1 flap 55, and C flap 56 belong to the first flap 5, that is, the flap connected between the flaps. D1 flap 57 and D flap 58 belong to The second flap 15 is the flap connected between the flap and the overlapping surface. In this way, when the carton is formed into a carton, the roots of the two adjacent flaps are not completely separated, but rely on flaps to fold to form two connected parts. In fact, each flap is integrated with the carton blank.
  • the structure, whether it is the first flap 5 or the second flap 15, is a part of the carton blank. Or it can be said that, from the perspective of the extension direction of the longitudinal positive fold line of the carton blank, the six first flaps 5 can be regarded as part of the flap, and the two second flaps 15 can be regarded as part of the overlapping surface.
  • a flap 52 and A flap 32 are integrated, B flap 54, C flap 56 and C flap 36 are integrated structure, A1 flap 51 and A1 flap 31 are integrated Structure, B1 flap 53, C1 flap 55 and C1 flap 35 are integrated structure, that is, the first flap 5 and the shorter flap are integrated, D1 flap 57 and D flap 58 are located in the overlap
  • the surface 2 is an integral structure with the overlapping surface 2.
  • each flap is an isosceles triangle.
  • the flap contour line between the two end points facing away from the flap positive fold line 9 and the flap reverse fold line 10 of the flap may also be a line other than a straight line.
  • each flap is respectively provided with a flap forward fold line 9 and a flap reverse fold line 10 of equal length. Due to the thickness of the carton, through holes are provided at the intersection of the flap forward fold line 9 and the flap reverse fold line 10 6 (the holes 61 to 68 shown in the figure).
  • the purpose of opening the holes 6 is twofold. The first is to absorb the superposition of the carton thickness caused by folding, to avoid sharp corners when folding flaps, and to avoid scratching and sticking hands. And other phenomena. Without these holes, the carton blank cannot even be folded into shape when the thickness of the carton blank is particularly thick; the second is equivalent to chamfering the edge intersection of the carton. When the carton is pressed or beaten, the force on the corner will be replaced by the conventional carton.
  • the "point force" of the edge intersection becomes the "surface force" of the hole wall of the through hole 6 in this embodiment, so although the hole is opened, under the same other conditions, the damage rate can be reduced.
  • the diameter of the through hole 6 is recommended to be as small as possible under the premise that it can be folded and formed without sharp corners. Generally, it is not recommended that the maximum hole diameter of the through hole 6 exceeds 4 times the thickness of the carton blank, too large will affect the corner strength and cause the carton to enter easily water.
  • the through hole 6 is preferably a hole whose circumferential contour line is a smooth curve, especially a cylindrical hole, a conical hole, or an elliptical cylindrical hole, etc., which is easy to process, and it is not easy to form a stress concentration point around the opening.
  • the through hole 6 is a cylindrical hole, and its diameter is equal to twice the thickness of the carton blank. If the through hole 6 is a variable diameter hole, the hole diameter on the outer side of the folded carton is larger than the inner side hole of the folded carton, so that the corner holes can follow the folding and forming to form a "shrinking" effect. Make the inside of the carton not easy to enter water.
  • the corners of the carton have flaps.
  • the flaps can play a protective role, increase the bending moment of the carton corners, and increase the compressive strength of the carton. It also absorbs the force deformation of the carton in certain force directions, and is no longer prone to tearing at the intersection of the edges of the carton as in the traditional carton.
  • the flap reverse fold line 10 is a reverse indentation at an angle of 45° with respect to the flap positive fold line 9.
  • the flaps will be folded to form a neat isosceles flap angle, but the purpose of the invention does not require that the two lengths must be equal.
  • the thickness of the cardboard at the overlapping area 20 between the flap and the first flap 5 is 3 times the thickness of the carton blank, that is, the thickness of the two-layer flap plus the thickness of the first flap 5.
  • the length of the flap positive fold line 9 is not less than twice the thickness of the carton blank and not more than 1/3 of the flap width .
  • a flap that is too small has a limited increase in strength.
  • the maximum length of the flap's positive fold line 9 can be equal to the width of the flap.
  • a flap that is too large may increase the compressive strength of the carton. Be counterproductive.
  • the thickness of the carton blank is also taken into account.
  • the area where the second flap 15 is located is not designed as a lap area, and the flap reflex line 10 of the second flap 15
  • the distance d is not less than the thickness of the carton blank.
  • the second flap 15 is equivalent to the first flap 5 connected between adjacent flaps, and the thickness of the second flap 15 is equal to the thickness of the first flap 5 and equal to
  • the thickness of the carton blank is that the thickness of the cardboard in the overlap area is thicker.
  • the thickness of the cardboard in the 30 overlapping area of the overlap surface and flap is twice the thickness of the carton blank, that is, the thickness of the flap here is equivalent to the thickness of two layers of carton blanks.
  • the thickness of the cardboard at the overlapping area 40 of the flap, the overlapping surface and the second flap 15 is 4 times the thickness of the carton blank, that is, the thickness of the two-layer flap plus the thickness of the second flap 15.
  • the longer B flap 34 and D flap 38 cover the shorter A flap 32 , C flap 36, the longer B1 flap 33, D1 flap 37 cover the shorter A1 flap 31, C1 flap 35; it can also be folded at the first flap 5, the second flap 15
  • the shape of the flap 36 is approximately an isosceles trapezoid, and both ends of the short side of the trapezoid away from the blank surface of the side wall are rounded.
  • the rounded corners 4 on the shorter flap make it easier to fold and shape.
  • the "long, short” mentioned here actually refers to the lengths M1 and M2 of the flaps shown in FIG. 1, and M1>M2. In this embodiment, all flaps have the same width N.
  • the longitudinal positive fold lines 7, the transverse positive fold lines 8, and the flap reverse fold lines 10 are continuous fold lines, and the flap positive fold lines 9 are discontinuous fold lines.
  • the flap positive fold line 9 and flap reverse fold line 10 can also be discontinuous stitch removal. Instead, use a tooth knife or die cutting line cutter to make the fold line partly cut and partly connected. Discontinuous polyline.
  • the overlapping surface 2 and the A surface 11 are bonded together, and the overlapping surface 2 is located on the inner surface of the A surface 11.
  • This embodiment uses a rectangular parallelepiped carton as an example to illustrate the present invention.
  • the foldable flap design can also be used to achieve similarity to this embodiment.
  • the effect and purpose are to strengthen the connection strength of the edges and corners of the carton, thereby improving the compressive strength of the carton as a whole without increasing the cost.
  • the solution in which flaps are provided only on one side of the side wall blank surface instead of on both sides, so as to only increase the compressive strength of the bottom surface or the top surface is a solution equivalent to this embodiment.
  • each of the first flaps 5 is an integral structure with the longer flap
  • the second flap 15 is an integral structure with the flaps 3 on both sides of the side wall blank surface 1 at the tail end.
  • the connection between the second flap 15 and the lap surface 2 is provided with a flap positive fold line 9
  • each flap has a positive fold line
  • the through hole 6 at the intersection of 9 and the flap reflex line 10 is a conical hole, the diameter of the large end is equal to twice the thickness of the carton blank, and the diameter of the small end is equal to the thickness of the carton blank, and the rest are the same as in Example 1.
  • M1 is the length of the formed carton
  • M2 is the width of the formed carton
  • N is the width of the longer flap
  • N2 is the width of the shorter flap
  • N2 is 1/2 of M1.

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

Abstract

一种纸箱及纸箱坯料，纸箱坯料包括用于围合形成纸箱侧壁并依次布置的侧壁坯面（1），及连接在尾端的侧壁坯面上用于连接头、尾的侧壁坯面的搭接面（2），各侧壁坯面的两侧均分别连接有摇盖（3），同一侧的摇盖折合用于形成纸箱的底面或顶面，位于同一侧的相邻摇盖之间均有第一襟片（5）相互连接，其中也有第二襟片（15）因搭接关系经由搭接面而连接在相邻摇盖之间，各襟片与其中一个摇盖之间连接处设有襟片正折线（9），与另一个摇盖之间连接处设有襟片反折线（10），在襟片正折线与襟片反折线相交处均设有通孔（6），基于上述纸箱坯料而成型纸箱。

Description

纸箱及纸箱坯料 技术领域
本发明涉及一种纸箱，尤其是一种增强边角抗压强度的纸箱折叠结构。
背景技术
目前，在瓦楞纸箱的实际使用过程中，因为不恰当的物流运输方式或者其他的人为因素，总有部分纸箱产生边角破裂、纸箱变形的现象，影响包装美观甚至是运输安全。通过分析问题成因及纸箱结构构成和成型过程，发明人发现，普通瓦楞纸箱长短两个摇盖是通过模切线分开的，在成型状态下，向下的压力如果超过纸箱本身的抗压值，就会造成纸箱从模切线处撕裂的现象。
是否能够通过改进，使其这一现象出现得更少呢？
于2012年2月1日公告的公告号为CN202130647U的中国实用新型专利“高强度纸箱”中，公开的解决此问题的方式是在箱体底部内侧四角各设有一个加强件，加强件采用L形片，其两个面与箱体的两个侧面对应相靠。这些加强件均未与纸箱本体相连接，容易发生移位，且制作时需要分别制作纸箱的箱体和加强件，制作不便。
发明内容
为了克服现有纸箱边角处易破裂的问题，本发明所要解决的技术问题是提供一种不易在边角处发生破裂的纸箱及纸箱坯料。
本发明解决其技术问题所采用的技术方案是：纸箱坯料，包括用于围合形成纸箱侧壁并依次布置的至少三个侧壁坯面，及连接在尾端的侧壁坯面上用于连接头、尾的侧壁坯面的搭接面，各侧壁坯面的两侧均分别连接有摇盖，同一侧的摇盖折合用于形成纸箱的底面或顶面，各侧壁坯面及搭接面之间具有纵向正折线，各侧壁坯面与其两侧摇盖之间设置有横向正折线，位于同一侧的相邻的摇盖之间均有第一襟片相互连接，第一襟片与两相邻的摇盖之间连接处分别设有折向相反的襟片折线即襟片正折线与襟片反折线，尾端的摇盖与搭接面之间有第二襟片相互连接，第二襟片与所述摇盖/搭接面之间连接处分别设有折向相反的襟片折线即襟片正折线与襟片反折线，在襟片正折线与襟片反折线相交处均设有通孔。
通所述通孔的周向轮廓线为平滑曲线。
所述通孔为圆柱孔。
所述通孔的直径不小于纸箱坯料厚度的两倍。
所述通孔为变径孔，其大径端位于纸箱坏面折叠后的纸箱外侧，小径端位于纸箱坏面折叠后的纸箱内侧，其最大直径不小于纸箱坯料厚度的两倍。
所述第一襟片位于其中一个摇盖上并与所述摇盖为一体的结构。
所述第二襟片位于搭接面上并与所述搭接面为一体的结构。
所述第二襟片的襟片反折线与头部的侧壁坯面上所连接摇盖对应搭接边之间有间距，所述间距不小于纸箱坯料厚度。
所述襟片正折线与襟片反折线的长度相同。
所述襟片正折线的长度不小于纸箱坯料厚度的两倍，不大于摇盖宽度的1/3。
所述襟片正折线与襟片反折线中至少其中一条为不连续折线。
所述纵向正折线、横向正折线、襟片反折线为连续折线，所述襟片正折线为不连续折线。
本发明还提供了基于上述纸箱坯料而成型的纸箱。所述纸箱在折叠成型时，需将所述搭接面固定连接到头部的侧壁坯面上。
所述纸箱为长方体形纸箱，所述侧壁坯面有四个，所述襟片正折线与襟片反折线之间的夹角为45°，其中襟片正折线在纸箱坯面上位于纵向正折线的延长线上。
所述各摇盖的摇盖宽度等于纸箱宽度的1/2，所述各第一襟片均与较短的摇盖为一体的结构，所述各第二襟片则与搭接面为一体的结构。所述摇盖宽度指相应横向正折线到摇盖顶端的距离。
进一步的是，较短的摇盖形状为近似等腰梯形。
进一步的是，较短的摇盖短边两侧倒圆角，以方便将较短的摇盖折叠到较长的摇盖的内侧。
进一步的是，所述搭接面与头部的侧壁坯面之间粘接或打钉连接。
本发明的有益效果是：通过改变纸坯形状，形成折叠式角部强化结构，适当大小的襟片可增大角部受力弯矩，吸收受力形变，增强了纸箱抗压能力，通孔可吸收角部的厚度叠加，改善受力条件，有效改善纸箱在码堆仓储和物流运输方面的边角破损问题，提高了纸箱抗压强度，并且是通过改变纸箱坯料的下料形状来实现抗压强度的增加，基本不会增加成本。
附图说明
图1是本发明实施例1的纸箱坯料的示意图。
图2是图1中J部的局部放大图。
图3是图1中K部的局部放大图。
图4是将图1中的搭接面连接到头部的侧壁坯面上再展开的平面示意图。
图5是图4中L部的局部放大图。
图6是本发明实施例1的纸箱的成型过程示意图(第一状态)。
图7是本发明实施例1的纸箱的成型过程示意图(第二状态)。
图8是本发明实施例1的纸箱的结构示意图(闭合状态)。
图9是本发明实施例2的纸箱坯料的示意图。
图中标记为：1-侧壁坯面，2-搭接面，3-摇盖，4-圆角，5-第一襟片，6-通孔，7-纵向正折线，8-横向正折线，9-襟片正折线，10-襟片反折线，11-A面，12-B面，13-C面，14-D面，15-第二襟片，16-搭接面横向正折线，20-摇盖与襟片叠合区域，30-搭接面与襟片叠合区域，31-A1摇盖，32-A摇盖，33-B1摇盖，34-B摇盖，35-C1摇盖，36-C摇盖，37-D1摇盖，38-D摇盖，40-摇盖、搭接面与襟片叠合区域，51-A1襟片，52-A襟片，53-B1襟片，54-B襟片，55-C1襟片，56-C襟片，57-D1襟片，58-D襟片。
具体实施方式
下面结合附图和实施例对本发明进一步说明。
实施例：
以最典型的长方体形纸箱上应用本发明为例。
如图1～图8所示，纸箱的侧面包括A面11、B面12、C面13、D面14，A面11与C面13相对，B面12与D面14相对，搭接面2连接在D面14的一端，用于成型时连接A面11和D面14，A面11两侧分别为A摇盖32、A1摇盖31，B面12两侧分别为B摇盖34、B1摇盖33，C面13两侧分别为C摇盖36、C1摇盖35，D面14两侧分别为D摇盖38、D1摇盖37，A面11、B面12、C面13、D面14在纸箱坯料上统称为侧壁坯面，各侧壁坯面之间及侧壁坯面与搭接面之间具有纵向正折线7，各侧壁坯面与其两侧的摇盖之间设置有横向正折线8，搭接面2的宽度S2小于头部的侧壁坯面即A面11的宽度S1，搭接面2的高度P2大于各侧壁坯面1的高度P1，在搭接面2的两侧还分别有搭接面横向正折线16，两侧摇盖分别折叠后形成纸箱的底面、顶面。
如图1、图2、图3和图4、图5所示，在A摇盖32、B摇盖34之间的摇盖根部连接处设置有连接用的A襟片52，在B摇盖34、C摇盖36之间的摇盖根 部连接处设置有连接用的B襟片54，在C摇盖36、D摇盖38之间的摇盖根部连接处设置有连接用的C襟片56，在D摇盖38、搭接面2之间的摇盖根部连接处设置有连接用的D襟片58，在A1摇盖31、B1摇盖33之间的摇盖根部连接处设置有连接用的A1襟片51，在B1摇盖33、C1摇盖35之间的摇盖根部连接处设置有连接用的B1襟片53，在C1摇盖35、D1摇盖37之间的摇盖根部连接处设置有连接用的C1襟片55，在D1摇盖37、搭接面2之间的摇盖根部连接处设置有连接用的D1襟片57，其中A1襟片51、A襟片52、B1襟片53、B襟片54、C1襟片55、C襟片56属于第一襟片5，即连接在摇盖之间的襟片，D1襟片57、D襟片58属于第二襟片15，即连接在摇盖和搭接面之间的襟片。这样，当成型为纸箱后，相邻两个摇盖连接处的根部不是截然分开，而是依靠襟片折叠而成为相互有连接关系的两部分，实际上各襟片均为与纸箱坯料一体的结构，无论是第一襟片5还是第二襟片15，都是纸箱坯料的一部分。或者也可以说，从纸箱坯料的纵向正折线的延伸方向来看，六片第一襟片5可视为摇盖的一部分，两片第二襟片15可视为搭接面的一部分。
本实施例中，A襟片52与A摇盖32为一体的结构，B襟片54、C襟片56与C摇盖36为一体的结构，A1襟片51与A1摇盖31为一体的结构，B1襟片53、C1襟片55与C1摇盖35为一体的结构，即第一襟片5与较短的摇盖为一体的结构，D1襟片57、D襟片58位于搭接面2上并与所述搭接面2为一体的结构。
本实施例中，各襟片的形状为等腰三角形。根据本发明，襟片的襟片正折线9和襟片反折线10相背离的两个端点之间的襟片轮廓线也可以是直线以外的其它线条。
本实施例中，各襟片上分别设置有长度相等的襟片正折线9和襟片反折线10，由于纸箱具有厚度，在襟片正折线9与襟片反折线10相交处均设有通孔6(即图示的孔61～孔68)，开通孔6的目的有二，一是吸收由于折叠导致的此处纸箱厚度叠加，避免在折叠襟片时形成尖角，避免造成刮手、扎手等现象。如果没有这些孔，在纸箱坯料厚度特别厚时甚至无法折叠成型；二是相当于对纸箱的棱边交汇处进行倒角处理，当纸箱受压或被摔打时，角部处受力将由常规纸箱棱边交汇点的“点受力”变成本实施例中通孔6的孔壁的“面受力”，故虽然开了孔，在其它条件相同的情况下，其破损率反而可以降低。通孔6的直径在能够保证折叠成型并且不形成尖角的前提下建议尽量小，通常不建议通孔6的最大孔径超出纸箱坯料厚度的4倍，太大会影响角部强度并且导致纸箱易进水。通孔6 最好是其周向轮廓线为平滑曲线的孔，尤其是圆柱孔、圆锥孔，或椭圆柱孔等，易于加工，开孔周边不易形成应力集中点。本实施例中，通孔6为圆柱孔，其孔径等于纸箱坯料厚度的两倍。若通孔6为变径孔时，其位于折叠成型后的纸箱外侧面的孔径大于折叠成型后的纸箱内侧面的孔径，这样可以随着折叠成型让角部的孔跟着形成“收缩”效果，使纸箱内部不易进水。
以上襟片和通孔结构的纸箱坯料在成型后，纸箱角部具有襟角，承受压力或者张力时，襟片能起到保护作用，增加纸箱角部受力弯矩，增加纸箱抗压强度，并在某些受力方向吸收纸箱受力形变，不再像传统纸箱那样易于在纸箱的各条棱边交汇处发生撕裂。
本实施例中，因为相邻摇盖之间折叠后相差90°，所以襟片反折线10处为相对于襟片正折线9呈45°夹角的反压痕。
襟片正折线9与襟片反折线10的长度若相同，则襟片处折叠后形成齐整的等腰襟角，但发明目的并不要求二者长度一定要相等。折叠后，摇盖与第一襟片5叠合区域20处纸板厚度为纸箱坯料厚度的3倍，即两层摇盖的厚度加上第一襟片5的厚度。
根据前述目的，考虑到纸箱坯料必然具有一定厚度，尤其强度要求较高的纸箱，所以，所述襟片正折线9的长度不小于纸箱坯料厚度的两倍且不大于摇盖宽度的1/3。太小的襟片对强度的提高有限，理论上襟片正折线9的最大长度可等于摇盖宽度，但根据后文中记载的实验，太大的襟片对纸箱抗压强度的提高有可能会起反作用。
如图4和图5所示，同样是考虑到纸箱坯料的厚度，为使其折叠成型平整，第二襟片15所在区域未设计为搭接区域，第二襟片15的襟片反折线10与头部的A面11上所连接摇盖32对应搭接边之间有间距d，所述间距d不小于纸箱坯料厚度，搭接面2与A面11搭接完成后，搭接面2可视为A面11的一部分，此时第二襟片15等同于连接在相邻摇盖之间的第一襟片5，第二襟片15的厚度等于第一襟片5的厚度并等于纸箱坯料的厚度，只是搭接区域纸板厚度更厚，搭接面与襟片叠合区域30处纸板厚度为纸箱坯料厚度的2倍，即此处摇盖厚度相当于两层纸箱坯料的厚度，在折叠后，摇盖、搭接面与第二襟片15叠合区域40处纸板厚度为纸箱坯料厚度的4倍，即两层摇盖的厚度加上第二襟片15的厚度。
如图1、图7、图8所示，通过第一襟片5、第二襟片15处的折叠，使较长的B摇盖34、D摇盖38盖住较短的A摇盖32、C摇盖36，较长的B1摇盖33、 D1摇盖37盖住较短的A1摇盖31、C1摇盖35；也可以通过第一襟片5、第二襟片15处折叠使其较短的A摇盖32、C摇盖36盖住较长的B摇盖34、D摇盖38，较短的A1摇盖31、C1摇盖35盖住较长的B1摇盖33、D1摇盖37，较长的B1摇盖33、B摇盖34、D1摇盖37、D摇盖38形状为矩形，较短的A1摇盖31、A摇盖32、C1摇盖35、C摇盖36形状为近似等腰梯形且其远离侧壁坯面的梯形短边两端倒圆角4，在较短的摇盖上倒圆角4使其更易于折叠成型。这里所说“长、短”实际指图1所示摇盖的长度M1、M2，M1＞M2，本实施例中所有摇盖具有相等的宽度N。
此外，由于纸板有一定厚度，本实施例中，为方便成型，纵向正折线7、横向正折线8、襟片反折线10为连续折线，所述襟片正折线9为不连续折线。
在连接强度保证的情况下，襟片正折线9、襟片反折线10也可均为不连续拆线，改为使用齿刀或模切线切刀使其折线有部分切断、部分连接，即形成不连续折线。
本实施例中，搭接面2与A面11之间粘接，且搭接面2位于A面11的内侧表面上。
表1抗压测试对比表
Figure PCTCN2020140241-appb-000001
Figure PCTCN2020140241-appb-000002
由表1可以看出，采用在摇盖间连接适当大小襟片并于角部开孔后，纸箱的抗压强度平均可提高11.9％，适合于各尺寸纸箱的能够最大程度提高抗压强度的襟片尺寸可参照以上实验经试验后得出。
本实施例以长方体形纸箱为例对本发明作出了说明，实际上对于例如三棱柱形、八棱柱形的异型纸箱，亦可利用所述的可折叠的襟片设计，达到与本实施例类似的效果和目的，加强纸箱边角部的连接强度，从而整体上提高纸箱的抗压强度，并且不增加成本。此外，只在侧壁坯面的一侧而非两侧均设置襟片从而只增加底面或顶面抗压强度的方案，为与本实施例等同的方案。
实施例2：
如图9所示，各第一襟片5均与较长的摇盖为一体的结构，第二襟片15与尾端的侧壁坯面1上两侧的摇盖3为一体的结构，此时，第二襟片15与相应摇盖之间设有襟片反折线10，第二襟片15与搭接面2之间连接处设有襟片正折线9，所述各襟片正折线9与襟片反折线10相交处的通孔6为圆锥孔，其大端直径等于纸箱坯料厚度的2倍，其小端直径等于纸箱坯料厚度，其余同实施例1。
图9中，M1为成型后纸箱的长度，M2为成型后纸箱的宽度，N为较长摇盖的宽度，N2为较短摇盖的宽度，N2为M1的1/2。

Claims (18)

  1. 纸箱坯料，包括用于围合形成纸箱侧壁并依次布置的至少三个侧壁坯面(1)，及连接在尾端的侧壁坯面(1)上用于连接头、尾的侧壁坯面(1)的搭接面(2)，各侧壁坯面(1)的两侧均分别连接有摇盖(3)，同一侧的摇盖(3)折合用于形成纸箱的底面或顶面，各侧壁坯面(1)之间及侧壁坯面(1)与搭接面(2)之间具有纵向正折线(7)，各侧壁坯面(1)与其两侧的摇盖(3)之间设置有横向正折线(8)，其特征是：位于同一侧的相邻的摇盖(3)之间均有第一襟片(5)相互连接，第一襟片(5)与两相邻的摇盖(3)之间连接处分别设有折向相反的襟片折线即襟片正折线(9)与襟片反折线(10)，尾端的摇盖(3)与搭接面(2)之间有第二襟片(15)相互连接，第二襟片(15)与所述摇盖(3)/搭接面(2)之间连接处分别设有折向相反的襟片折线即襟片正折线(9)与襟片反折线(10)，在襟片正折线(9)与襟片反折线(10)相交处均设有通孔(6)。
  2. 如权利要求1所述的纸箱坯料，其特征是：所述通孔(6)的周向轮廓线为平滑曲线。
  3. 如权利要求2所述的纸箱坯料，其特征是：所述通孔(6)为圆柱孔。
  4. 如权利要求3所述的纸箱坯料，其特征是：所述通孔(6)的直径不小于纸箱坯料厚度的两倍。
  5. 如权利要求2所述的纸箱坯料，其特征是：所述通孔(6)为变径孔，其大径端位于纸箱坏面折叠后的纸箱外侧，小径端位于纸箱坏面折叠后的纸箱内侧，其最大直径不小于纸箱坯料厚度的两倍，不大于纸箱坯料厚度的四倍。
  6. 如权利要求1所述的纸箱坯料，其特征是：所述第一襟片(5)位于其中一个摇盖(3)上并与所述摇盖(3)为一体的结构。
  7. 如权利要求1所述的纸箱坯料，其特征是：所述第二襟片(15)位于搭接面(2)上并与所述搭接面(2)为一体的结构。
  8. 如权利要求7所述的纸箱坯料，其特征是：所述第二襟片(15)的襟片反折线(10)与头部的侧壁坯面(1)上所连接摇盖(3)对应搭接边之间有间距(d)，所述间距(d)不小于纸箱坯料厚度。
  9. 如权利要求1～8中任意一项权利要求所述的纸箱坯料，其特征是：所述襟片正折线(9)与襟片反折线(10)的长度相同。
  10. 如权利要求9所述的纸箱坯料，其特征是：所述襟片正折线(9)的长度不小于纸箱坯料厚度的两倍，不大于摇盖(3)宽度的1/3。
  11. 如权利要求1～8中任意一项权利要求所述的纸箱坯料，其特征是：所述襟片正折线(9)与襟片反折线(10)中至少其中一条为不连续折线。
  12. 如权利要求1～8中任意一项权利要求所述的纸箱坯料，其特征是：所述纵向正折线(7)、横向正折线(8)、襟片反折线(10)为连续折线，所述襟片正折线(9)为不连续折线。
  13. 纸箱，其特征是：纸箱由权利要求1～12中任意一项权利要求所述的纸箱坯料制成，所述搭接面(2)固定连接在头部的侧壁坯面(1)上。
  14. 如权利要求13所述的纸箱，其特征是：所述纸箱为长方体形纸箱，所述侧壁坯面(1)有四个，所述襟片正折线(9)与襟片反折线(10)之间的夹角为45°，其中襟片正折线(9)在纸箱坯面上位于纵向正折线(7)的延长线上。
  15. 如权利要求14所述的纸箱，其特征是：所述各摇盖(3)的摇盖宽度等于纸箱宽度的1/2，所述各第一襟片(5)均与较短的摇盖(3)为一体的结构，所述各第二襟片(15)则与搭接面(2)为一体的结构。
  16. 如权利要求15所述的纸箱，其特征是：较短的摇盖(3)形状为近似等腰梯形。
  17. 如权利要求16所述的纸箱，其特征是：较短的摇盖短边两侧倒圆角。
  18. 如权利要求13所述的纸箱，其特征是：所述搭接面(2)与头部的侧壁坯面(1)之间粘接或打钉连接。
PCT/CN2020/140241 2020-05-18 2020-12-28 纸箱及纸箱坯料 WO2021232803A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN111689023A (zh) * 2020-05-18 2020-09-22 成都市裕同印刷有限公司 纸箱及纸箱坯料
TWI832560B (zh) * 2022-11-16 2024-02-11 姜海寰 便攜式可折疊包裝箱體結構

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GB1423211A (en) * 1972-04-06 1976-02-04 Epex Packing containers of a boat type
CN1072898A (zh) * 1991-10-15 1993-06-09 米德公司 板材互锁装置
WO2003082684A2 (en) * 2002-03-27 2003-10-09 Volumatic Limited Cup for cash till drawer
CN209366703U (zh) * 2018-01-08 2019-09-10 今麦郎饮品股份有限公司 一种直角抗压纸箱
CN110884748A (zh) * 2019-12-20 2020-03-17 曲阜师范大学 可反复使用三次的快递纸箱和加工方法
CN111689023A (zh) * 2020-05-18 2020-09-22 成都市裕同印刷有限公司 纸箱及纸箱坯料

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Publication number Priority date Publication date Assignee Title
GB1423211A (en) * 1972-04-06 1976-02-04 Epex Packing containers of a boat type
CN1072898A (zh) * 1991-10-15 1993-06-09 米德公司 板材互锁装置
WO2003082684A2 (en) * 2002-03-27 2003-10-09 Volumatic Limited Cup for cash till drawer
CN209366703U (zh) * 2018-01-08 2019-09-10 今麦郎饮品股份有限公司 一种直角抗压纸箱
CN110884748A (zh) * 2019-12-20 2020-03-17 曲阜师范大学 可反复使用三次的快递纸箱和加工方法
CN111689023A (zh) * 2020-05-18 2020-09-22 成都市裕同印刷有限公司 纸箱及纸箱坯料

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