WO2016023164A1 - 包装盒的压痕线压线刀具及压痕线结构 - Google Patents

包装盒的压痕线压线刀具及压痕线结构 Download PDF

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Publication number
WO2016023164A1
WO2016023164A1 PCT/CN2014/084141 CN2014084141W WO2016023164A1 WO 2016023164 A1 WO2016023164 A1 WO 2016023164A1 CN 2014084141 W CN2014084141 W CN 2014084141W WO 2016023164 A1 WO2016023164 A1 WO 2016023164A1
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WO
WIPO (PCT)
Prior art keywords
crimping tool
line
indentation line
blade portion
creasing
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PCT/CN2014/084141
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English (en)
French (fr)
Inventor
魏永彪
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新协力包装制品（深圳）有限公司
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Priority to PCT/CN2014/084141 priority Critical patent/WO2016023164A1/zh
Publication of WO2016023164A1 publication Critical patent/WO2016023164A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/06—Forming folding lines by pressing or scoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
    • B65B47/04—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure
    • B65B47/06—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure using folding dies

Definitions

  • the invention relates to a folding plastic packaging box, in particular to an indentation line pressing tool and an indentation line structure of a packaging box.
  • Product packaging is an important part of product production and sales. It is an intuitive visual experience of consumers, a direct and main expression of product personality, and a direct expression of corporate image positioning.
  • transparent plastic packaging boxes which are widely used in the packaging of food, cosmetics, electronic products, toys, stationery, etc., so that people can clearly see the contents of them.
  • This kind of transparent plastic packaging box is formed by pressing the indentation line on the whole piece of transparent plastic sheet and then pressing the trace line.
  • the indentation line of the existing plastic packaging box is a straight indentation line with a certain depth which is pressed by a straight embossing cutter without a blade.
  • the imprinting knife must apply a proper amount of pressure when stamping the indentation line, and the pressure is too large to be easily broken, and the pressure is too small to be easily folded.
  • stamping indentation lines of plastic sheets with different materials and different thicknesses it is necessary to re-adjust the pressure of the pressing, so that a certain scrap rate is often generated and the working efficiency is affected. Not only that, but when the label is folded and the package is folded, the packaging operation can be time-consuming and labor-intensive because the indentation line cannot be too deep.
  • the indentation line of the existing plastic packaging box is a continuous indentation line with a uniform depth, and the toughness is very poor, so it often appears at the indentation line during the packaging of the article or after many times of folding and bending. Fracture or even fracture occurs, so the scrap rate is high, and the straight indentation line lacks aesthetics. Since the conventional flat imprinting blade has no blade portion, a large pressing force is required due to the large resistance when the indentation line is pressed, and the indented line width is wide, generally about 1.4 mm, which is not only lowered. The indentation line strength is poor and the appearance is poor.
  • the invention aims to solve the above problems, and provides an indentation line pressure of a package which is fine and beautiful, has good flexibility, is not easy to be broken, is easy to be folded, and has no deformation or damage of the plastic sheet. Line cutter.
  • the present invention provides an indentation line crimping tool for a package, which is a strip-shaped plate-like body having a blade portion at one end in the width direction, the cross-sectional shape of the blade portion being equal
  • the edge portion or the non-equal trapezoidal shape is provided with a plurality of protrusions spaced apart from each other on the end surface in the longitudinal direction to form a tooth-shaped blade portion.
  • the cross-sectional shape of the blade portion of the crimping tool is an equilateral trapezoid.
  • An angle between a straight side of the blade portion of the crimping tool and an extension line of the other oblique side or the two oblique sides is an acute angle.
  • An angle between a straight side of the blade portion of the crimping tool and an extension line of the other oblique side or the two oblique sides is 20 to 60 degrees.
  • An angle between a straight side of the blade of the crimping tool and an extension of the other bevel or the two bevels is 40 degrees.
  • the spacing between the plurality of protrusions is equidistant or non-equal.
  • the shape of the plurality of protrusions is a rectangle, an arc, a U, a cone or a polygon, wherein the direct connection of the rectangular protrusion and the intersection of the lateral sides are transitioned by a circular arc.
  • the invention also provides an indentation line structure of the packaging box pressed by the pressing tool, and the indentation line extruded by the pressing tool is a concave and concave indentation line with a width of 0.20-2.0 mm.
  • the package is formed by folding each side panel of the cassette in accordance with each indentation line.
  • the indentation line is an indentation line formed by a plurality of convex portions and a plurality of concave portions, and the depth of the plurality of concave portions is determined according to the thickness of the sheet piece and can be adjusted.
  • the plurality of recesses have a depth of 0.02 mm to 1 mm.
  • the plurality of concave portions of the indentation line have a sectional shape of a rectangle, an arc, a U, a cone or a polygon. Wherein, the direct connection of the rectangular recess and the intersection of the lateral sides are transitioned by a circular arc.
  • the contribution of the present invention is that it effectively solves the problems of conventional imprint knives. Since the crimping tool of the invention has a blade portion, the width of the crimping end of the cutter is reduced, thereby reducing the resistance of the tool pressing, which not only makes the processing more convenient, but also has no deformation or damage during the processing of the plastic sheet. .
  • the width of the crimping end of the cutter is reduced, the width of the pressed creasing line is also greatly reduced, and the width is only about a quarter of the conventional indentation line, so that the crimping tool of the present invention
  • the pressed indentation line is not only fine and beautiful, but also has good flexibility, is not easy to be broken, and is easy to be folded, thereby effectively improving the aesthetics of the package.
  • the end surface of the blade portion of the crimping tool of the present invention has a convex-concave phase structure, the processing is easy to control, and the pressed indentation line is not broken, ensuring that the package has sufficient strength.
  • Figure 1 is a perspective view showing the structure of a crimping tool of the present invention.
  • Figure 2 is a plan view showing the structure of the crimping tool of the present invention.
  • FIG. 3 is a side view of FIG. 2, wherein FIG. 3A is a schematic view of a line cutter having a cross-sectional shape of an edge portion having an equilateral trapezoidal shape, and FIG. 3B is a schematic view of a line cutter having a cross-sectional shape of a blade portion having a non-equal trapezoidal shape.
  • FIG. 4 is a schematic view showing a convex structure of the crimping tool of the present invention, wherein FIG. 4A is a schematic view of a crimping tool having a rectangular projection, FIG. 4B is a schematic view of a crimping cutter having an arcuate projection, and FIG. 4C is a U-shaped diagram. A schematic view of a raised crimping tool, and FIG. 4D is a schematic view of a crimping tool having a tapered projection.
  • FIG. 5 is a schematic cross-sectional view of a concave portion of an indentation line, wherein FIG. 5A is a schematic view of a rectangular concave portion, FIG. 5B is a schematic view of a curved concave portion, FIG. 5C is a schematic view of a U-shaped concave portion, and FIG. 5D is a schematic view of a tapered concave portion.
  • Figure 6 is a schematic view showing the structure of the indentation line of the package of the present invention, wherein Figure 6A is a perspective view of the package with the indentation line folded according to the present invention, and Figure 6B is a partial enlarged view of Figure 6A.
  • the indentation line crimping tool 10 of the package of the present invention relates to a tool for forming an indentation line on a transparent or translucent plastic sheet for making a package, the crimping tool being made of tool steel
  • the strip-shaped plate body is made, and the length of the cutter depends on the length of the package.
  • a blade portion 11 is provided at one end of the crimping tool 10 in the width direction, and the cross-sectional shape of the blade portion 11 is an equilateral or non-equal trapezoid, preferably an equilateral trapezoid.
  • the angle ⁇ between the extension lines of the two oblique sides 111, 112 of the blade portion 11 of the crimping tool is an acute angle, that is, the value of ⁇ can be selected within a range of more than 0 degrees and less than 90 degrees.
  • the angle between the extension lines of the two oblique sides 111, 112 of the blade portion 11 of the crimping tool is 20 to 60 degrees.
  • the angle between the extension lines of the two oblique sides 111, 112 of the blade portion 11 of the crimping tool is 40 degrees, at which the pressure pressed by the blade portion 11 of the crimping tool
  • the lines of the traces are fine, flexible and easy to fold.
  • a plurality of projections 12 are provided at intervals along the longitudinal end face of the blade portion 11 of the crimping tool to form a toothed edge portion in which the convex and concave portions are arranged.
  • the spacing between the plurality of protrusions 12 may be equidistant or non-equidistant.
  • the plurality of protrusions 12 may be rectangular, curved, U-shaped, tapered or polygonal, and FIGS. 4A to 4D respectively show a rectangle, an arc, a U-shape, and a cone.
  • the shape of the preferred protrusion 12 is a rectangle, and the direct connection of the rectangular protrusion and the intersection of the lateral sides are transitioned by a circular arc.
  • the thickness of the plastic sheet 10 for making the package is usually 0.17 to 1.2 mm, and the indentation line between the concave and convex phases is processed on the plastic sheet, and the groove on the pressing tool is neither too deep to cause perforation or to reduce the strength of the indentation line. It should not be too shallow to affect the flexibility and convenience of folding into a package.
  • the crimping tool 10 of the present invention has a blade portion and the blade portion is provided with a convex and concave tooth-shaped blade portion, the plastic sheet is not damaged and does not deform when the indentation line is formed on the plastic sheet.
  • the stamping equipment for installing the crimping tool is easy to adjust, the precision of the punching depth is relatively low, the precision error does not cause the entire creasing line to break, and the bumps and pits formed on the plastic sheet This allows the indentation line to have outstanding fracture resistance even if some of the bumps are broken and the other pits are connected to each other.
  • the scrap rate of the product is greatly reduced, and the production cost is saved.
  • the indentation line produced by the crimping tool 10 of the present invention and the package formed by folding the indentation line are as shown in Figs. 5 and 6, and the crimping tool 10 of the present invention is mounted on a dedicated punching machine (not shown). And then, a plurality of indentation lines 20 are pressed out on the cut whole transparent plastic sheet, and the upper, lower, left, right, front and rear boxes of the package are formed on both sides of each indentation line. sheet.
  • the indentation line 20 is an indentation line between the convex and concave phases having a width of 0.20 to 2 mm, and the preferred width of the indentation line is about 0.3 mm.
  • the indentation line 20 is an indentation line formed by a plurality of convex portions 21 and a plurality of concave portions 22, and FIGS. 5A to 5D respectively show a sectional shape of a rectangle, an arc, a U shape, and a conical shape.
  • the cross-sectional shape of the indentation line concave portion is preferably a rectangular cross-sectional shape of the indentation line concave portion 22, and the intersection of the straight portion and the lateral side of the rectangular concave portion is transitioned by a circular arc.
  • the depth of the plurality of recesses 22 of the indentation line is determined according to the thickness of the panel and can be adjusted. In this embodiment, the depth of the plurality of recesses 22 may be selected within a range of 0.02 mm to 1 mm.
  • each of the two sheets 31 on each side of each indentation line is folded in a line of a mark to form an upright square or a rectangular box as shown in FIG. 6A.

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  • Mechanical Engineering (AREA)
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Abstract

一种包装盒的压痕线压线刀具及压痕线结构，该压线刀具（10）为条形板状体，其沿宽度方向的一端设有刃部（11），该刃部（11）的断面形状为等边或非等边梯形，该刃部沿长度方向的端面上间隔地设有多个凸起（12），形成齿形刃部。由所述压线刀具（10）所压出的压痕线（20）是宽度为0.20～2.0mm的凸凹相间的压痕线，包装盒（30）由盒片（31）的各侧片按各压痕线（20）折合而成型。由压线刀具所压出的压痕线精细而美观，柔韧性好，不易断裂，易于折合，且塑料片材无变形、无损伤。

Description

包装盒的压痕线压线刀具及压痕线结构 【技术领域】
本发明涉及折合式塑料包装盒，特别是涉及一种包装盒的压痕线压线刀具及压痕线结构。
【背景技术】
产品包装是产品生产和销售的重要环节，是消费者对产品的直观视觉体验，是产品个性的直接和主要表达形式，是企业形象定位的直接表现。在各种各样的包装物中，使用最为普遍的是透明塑料包装盒，其广泛应用于食品、化妆品、电子产品、玩具、文具等商品的包装，使人们对其内的物品一目了然。这类透明塑料包装盒是在整块的透明塑料片材上压出压痕线，然后按压痕线折合而成。现有塑料包装盒的压痕线均是由无刃部的平直的压印刀具压出的具有一定深度的直的压痕线，由于塑料片材薄且脆的特殊性，在加工时，压印刀在冲压压痕线时施压须适度，施压过大容易折断，施压过小则不易折合。对于材料不同、厚度不同的塑料片材冲压压痕线时需要重新调整施压压力，因此往往会产生一定的废品率，并影响工作效率。不仅如此，在按压痕线将包装盒折合起来时，又会因压痕线不能过深而使包装操作费时费力。更为重要的是，现有塑料包装盒的压痕线是深度一致的连续的压痕线，其韧性很差，因此在包装物品过程中或经多次折合弯曲后常会出现在压痕线处出现折裂甚至断裂现象，因此废品率较高，且平直的压痕线缺乏美感。由于传统的平直的压印刀无刃部，所以压制压痕线时因阻力大而须施加较大的冲压力，且压出的压痕线宽度较宽，一般在1.4mm左右，不仅降低了压痕线强度，且美观性较差。
【发明内容】
本发明旨在解决上述问题，而提供一种所压出的压痕线精细而美观，柔韧性好，不易断裂，易于折合，且塑料片材无变形、无损伤的包装盒的压痕线压线刀具。
本发明的目的还在于提供由所述压痕线压线刀具所压制的包装盒的压痕线结构。
为实现上述目的，本发明提供一种包装盒的压痕线压线刀具，该压线刀具为条形板状体，其沿宽度方向的一端设有刃部，该刃部的断面形状为等边或非等边梯形，该刃部沿长度方向的端面上间隔地设有多个凸起，形成齿形刃部。
所述压线刀具的刃部的断面形状为等边梯形。
所述压线刀具的刃部的一条直边与另一条斜边或两条斜边的延长线之间的夹角为锐角。
所述压线刀具的刃部的一条直边与另一条斜边或两条斜边的延长线之间的夹角为20～60度。
所述压线刀具的刃部的一条直边与另一条斜边或两条斜边的延长线之间的夹角为40度。
所述多个凸起之间的间距为等距或非等距。
所述多个凸起的形状为矩形、弧形、U形、锥形或多边形，其中，矩形凸起的直连与横边的交角处由圆弧过渡。
本发明也提供了由所述压线刀具所压制的包装盒的压痕线结构，由所述压线刀具所压出的压痕线是宽度为0.20～2.0mm的凸凹相间的压痕线，包装盒由盒片的各侧片按各压痕线折合而成型。
所述压痕线是由多个凸部和多个凹部形成的凸凹相间的压痕线，其多个凹部的深度根据盒片的厚度确定并可加以调整。
所述多个凹部的深度为0.02mm～1mm。
所述压痕线的多个凹部的断面形状为矩形、弧形、U形、锥形或多边形， 其中，矩形凹部的直连与横边的交角处由圆弧过渡。
本发明的贡献在于，其有效解决了传统压印刀所存在的问题。本发明的压线刀具由于设有刃部，使得刀具的压线端的宽度减小，因此减少了刀具下压的阻力，不仅使加工更加便利，且塑料片材在加工过程中无变形、无损伤。更重要的是，由于刀具的压线端的宽度减小，压出的压痕线的宽度也大大减小，其宽度仅为传统压痕线的四分之一左右，使得本发明的压线刀具所压制出的压痕线不仅精细而美观，且柔韧性好，不易断裂，易于折合，因而有效提升了包装盒的美观性。还由于本发明的压线刀具的刃部的端面为凸凹相间结构，使得加工过程易于控制，所压出的压痕线不会断裂，保证了包装盒具有足够的强度。
【附图说明】
图1是本发明的压线刀具结构立体示意图。
图2是本发明的压线刀具结构平面示意图。
图3是图2的侧视图，其中，图3A为刃部的断面形状为等边梯形的压线刀具示意图，图3B为刃部的断面形状为非等边梯形的压线刀具示意图。
图4是本发明的压线刀具的凸起结构示意图，其中，图4A为具有矩形凸起的压线刀具示意图，图4B为具有弧形凸起的压线刀具示意图，图4C为具有U形凸起的压线刀具示意图，图4D为具有锥形凸起的压线刀具示意图。
[根据细则91更正 11.10.2014]　
图5是压痕线凹部断面示意图，其中，图5A为矩形凹部示意图，图5B为弧形凹部示意图，图5C为U形凹部示意图，图5D为锥形凹部示意图。
图6是本发明的包装盒压痕线结构示意图，其中，图6A为按本发明的压痕线折合而成的包装盒立体示意图，图6B为图6A的局部放大图。
【具体实施方式】
下列实施例是对本发明的进一步解释和说明，对本发明不构成任何限制。
参阅图1～图4，本发明的包装盒的压痕线压线刀具10涉及在制作包装盒用的透明或半透明的塑料薄片上形成压痕线的刀具，该压线刀具是由工具钢制成的条形板状体，刀具的长度根据包装盒的长度而定。
如图1～图3所示，在所述压线刀具10的沿宽度方向的一端设有刃部11，该刃部11的断面形状为等边或非等边梯形，最好为等边梯形。所述压线刀具的刃部11的两条斜边111，112的延长线之间的夹角α为锐角，即α的值可在大于0度小于90度的范围内选择。优选地，所述压线刀具的刃部11的两条斜边111，112的延长线之间的夹角为20～60度。更优选地，所述压线刀具的刃部11的两条斜边111，112的延长线之间的夹角为40度，在该角度下，压线刀具的刃部11所压制出的压痕线的线条精细，柔韧性好且易于折合。
为提升压痕线的抗断裂性能，在所述压线刀具的刃部11沿长度方向的端面上间隔地设有多个凸起12，形成凸凹相间排列的齿形刃部。所述多个凸起12之间的间距可以是等距的，也可以是非等距的。如图4A～图4D所示，所述多个凸起12可以是矩形、弧形、U形、锥形或多边形，图4A～图4D分别示出了矩形、弧形、U形、锥形的凸起12的形状。本实施例中，优选的凸起12的形状为矩形，该矩形凸起的直连与横边的交角处由圆弧过渡。
制作包装盒的塑料薄片10的厚度通常为0.17～1.2mm，在这类塑料薄片上加工凸凹相间的压痕线，压线刀具上的凹槽既不能太深而导致穿孔或降低压痕线强度，也不能太浅而影响折合成包装盒时的灵活性和方便性。很显然，由于本发明的压线刀具10带有刃部，且刃部上设有凸凹相间的齿形刃部，使得在塑料薄片上制作压痕线时，塑料薄片不会损伤且不会变形，且安装压线刀具的冲压设备易于调整，对冲压深度的精度要求相对较低，精度的误差不会导致整个压痕线断裂，在塑料薄片上所形成的凸点和凹点 使得即使某些凸点断裂，而其它凹点仍相互连接，因此保证了压痕线具有突出的抗断裂性能。同时，基于上述原因，在包装盒的制作过程中，大大降低了产品的废品率，节约了生产成本。
由本发明的压线刀具10所制作的压痕线及按该压痕线所折合形成的包装盒如图5、图6所示，将本发明的压线刀具10装在专用冲床(图中未示出)上，然后在裁切好的整片透明塑料薄片上压出多条压痕线20，各压痕线两侧即形成包装盒的上、下、左、右、前、后的盒片。所述压痕线20是宽度为0.20～2mm的凸凹相间的压痕线，压痕线的优选宽度为0.3mm左右。所述压痕线20是由多个凸部21和多个凹部22形成的凸凹相间的压痕线，图5A～图5D分别示出了断面形状为矩形、弧形、U形、锥形的压痕线凹部的断面形状，优选的压痕线凹部22的断面形状为矩形，该矩形凹部的直连与横边的交角处由圆弧过渡。压痕线的多个凹部22的深度根据盒片的厚度确定并可加以调整。本实施例中，所述多个凹部22的深度可在0.02mm～1mm范围内选择。
如图6A、图6B，将各压痕线的两侧的各盒片31按压痕线折合，即可形成如图6A所示的正立方形或长立方形的包装盒。
尽管通过以上实施例对本发明进行了揭示，但本发明的保护范围并不局限于此，在不偏离本发明构思的条件下，对以上各构件所做的变形、替换等均将落入本发明的权利要求范围内。

Claims (11)

  1. 一种包装盒的压痕线压线刀具，其特征在于，该压线刀具(10)为条形板状体，其沿宽度方向的一端设有刃部(11)，该刃部(11)的断面形状为等边或非等边梯形，该刃部沿长度方向的端面上间隔地设有多个凸起(12)，形成齿形刃部。
  2. 如权利要求1的压线刀具所压制的包装盒的压痕线结构，其特征在于，由所述压线刀具(10)所压出的压痕线(20)是宽度为0.20～2.0mm的凸凹相间的压痕线，包装盒(30)由盒片(31)的各侧片按各压痕线(20)折合而成型。
  3. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述压线刀具的刃部(11)的断面形状为等边梯形。
  4. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述压线刀具的刃部(11)的一条直边与另一条斜边或两条斜边(111，112)的延长线之间的夹角为锐角。
  5. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述压线刀具的刃部(11)的一条直边与另一条斜边或两条斜边(111，112)的延长线之间的夹角为20～60度。
  6. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述压线刀具的刃部(11)的一条直边与另一条斜边或两条斜边(111，112)的延长线之间的夹角为40度。
  7. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述多个凸起(12)之间的间距为等距或非等距。
  8. 如权利要求1所述的包装盒的压痕线压线刀具，其特征在于，所述多个凸起(12)的形状为矩形、弧形、U形、锥形或多边形，其中，矩形凸起的直连与横边的交角处由圆弧过渡。
  9. 如权利要求2所述的包装盒的压痕线结构，其特征在于，所述压痕线是由多个凸部(21)和多个凹部(22)形成的凸凹相间的压痕线，其多个凹部(22)的深度根据盒片的厚度确定并可加以调整。
  10. 如权利要求9所述的包装盒的压痕线结构，其特征在于，所述多个凹部(22)的深度为0.02mm～1mm。
  11. 如权利要求9所述的包装盒的压痕线结构，其特征在于，所述压痕线(20)的多个凹部(22)的断面形状为矩形、弧形、U形、锥形或多边形，其中，矩形凹部的直连与横边的交角处由圆弧过渡。
PCT/CN2014/084141 2014-08-12 2014-08-12 包装盒的压痕线压线刀具及压痕线结构 WO2016023164A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2564481Y (zh) * 2002-07-12 2003-08-06 吕吕进 一种包装盒的折线刀改进结构
JP2005161851A (ja) * 2003-11-14 2005-06-23 Idemitsu Unitech Co Ltd 折り曲げ罫線入りプラスチックシートおよびその製造方法、その製造に使用される折り曲げ罫線刃並びに折り曲げ罫線入りプラスチックシートによる包装容器
CN2851121Y (zh) * 2005-11-23 2006-12-27 魏永彪 一种包装盒的压痕折线结构
CN101186240A (zh) * 2007-12-06 2008-05-28 协力胶盒制品（深圳）有限公司 折合式塑料盒折线的抗断裂结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2564481Y (zh) * 2002-07-12 2003-08-06 吕吕进 一种包装盒的折线刀改进结构
JP2005161851A (ja) * 2003-11-14 2005-06-23 Idemitsu Unitech Co Ltd 折り曲げ罫線入りプラスチックシートおよびその製造方法、その製造に使用される折り曲げ罫線刃並びに折り曲げ罫線入りプラスチックシートによる包装容器
CN2851121Y (zh) * 2005-11-23 2006-12-27 魏永彪 一种包装盒的压痕折线结构
CN101186240A (zh) * 2007-12-06 2008-05-28 协力胶盒制品（深圳）有限公司 折合式塑料盒折线的抗断裂结构

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