WO2020098167A1 - 用于显示面板的垫片和包装盒 - Google Patents

用于显示面板的垫片和包装盒 Download PDF

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Publication number
WO2020098167A1
WO2020098167A1 PCT/CN2019/075604 CN2019075604W WO2020098167A1 WO 2020098167 A1 WO2020098167 A1 WO 2020098167A1 CN 2019075604 W CN2019075604 W CN 2019075604W WO 2020098167 A1 WO2020098167 A1 WO 2020098167A1
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Prior art keywords
gasket
groove
length
cutting groove
rectangular
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PCT/CN2019/075604
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English (en)
French (fr)
Inventor
岳亮
俞刚
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惠州市华星光电技术有限公司
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Publication of WO2020098167A1 publication Critical patent/WO2020098167A1/zh

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Classifications

    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/02—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage
    • B65D81/05—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/10—Devices to locate articles in containers

Definitions

  • the invention relates to the field of electronic display, and in particular to a gasket and a packaging box for a display panel.
  • Liquid-crystal panel packaging spacers usually use double-sided laminated foam (Expandable Polyethylene, EPE) to provide adequate cushioning.
  • EPE Expandable Polyethylene
  • the spacer In order to increase the panel loading rate in a unit packaging unit, the spacer is usually thinner and relatively lighter. Secondly, in order to prevent the gasket from depositing foreign objects under high temperature and high humidity environment and contaminating the panel, the gasket usually needs to be double-sided coated.
  • the film layer is non-foamed material, such as low density polyethylene (LDPE), gasket body EPE foam material.
  • LDPE low density polyethylene
  • gasket body EPE foam material gasket body EPE foam material.
  • the invention provides a gasket and a packaging box for a display panel, to solve the technical problem that the gasket in the prior art is easily warped and deformed.
  • a gasket for a packaging box of a display panel comprising a gasket body and a protective film layer covering the surface of the gasket body, at least one edge of each edge of the gasket has a uniformly distributed cut Groove, the cutting groove penetrates the gasket body and the protective film layer; one end of the cutting groove is open, and penetrates the edge of the gasket where the cutting groove is located, and the other end extends into the inside of the gasket, Moreover, it has an anti-tear hole communicating with the cutting slot, wherein the anti-tear hole is circular or semi-circular, and its diameter is greater than twice the width of the cutting slot.
  • the spacer is rectangular, the width of the cutting groove is less than one hundredth of the length of the short side of the rectangle, and the length of the cutting groove is less than the length of the short side of the rectangle One-twentieth.
  • the gasket is rectangular, and the four corners of the rectangle have a limit structure, the limit structure includes a groove structure on the side of the top corner, the groove Is less than the depth of the cutting groove, and the width of the groove is less than one-twentieth the length of the short side of the rectangle.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is rectangular, and a top corner of the raised structure coincides with one of the top corners of the gasket, wherein the length of the overlapped portion is shorter than the length of the short side of the raised structure.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is circular, and the raised structure coincides with one of the top corner portions of the gasket, wherein the length of the overlapped portion is smaller than the radius of the raised structure.
  • the present invention also provides a gasket for a packaging box of a display panel, which includes a gasket body and a protective film layer covering the surface of the gasket body, at least one of each edge of the gasket
  • the edge has uniformly distributed cutting grooves, the cutting grooves penetrate the gasket body and the protective film layer; one end of the cutting groove is open, and penetrates the edge of the gasket where the cutting groove is located, and the other end It extends into the inside of the gasket and has a tear-proof hole communicating with the cutting groove.
  • the spacer is rectangular, the width of the cutting groove is less than one hundredth of the length of the short side of the rectangle, and the length of the cutting groove is less than the length of the short side of the rectangle One-twentieth.
  • the tear-proof hole is circular or semi-circular, and its diameter is greater than twice the width of the cutting groove.
  • the gasket is rectangular, and the four corners of the rectangle have a limit structure, the limit structure includes a groove structure on the side of the top corner, the groove Is less than the depth of the cutting groove, and the width of the groove is less than one-twentieth the length of the short side of the rectangle.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is rectangular, and a top corner of the raised structure coincides with one of the top corners of the gasket, wherein the length of the overlapped portion is shorter than the length of the short side of the raised structure.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is circular, and the raised structure coincides with one of the top corner portions of the gasket, wherein the length of the overlapped portion is smaller than the radius of the raised structure.
  • the present invention provides a packaging box for a display panel, wherein the packaging box includes a gasket and an outer shell that can be engaged with the gasket, the gasket includes a gasket body and a cover A protective film layer on the surface of the gasket body, at least one edge of each edge of the gasket has uniformly distributed cutting grooves, the cutting grooves penetrate the gasket body and the protective film layer; the cutting One end of the cutting slot is open and penetrates the edge of the gasket where the cutting slot is located, the other end extends into the inside of the gasket, and has an anti-tear hole communicating with the cutting slot.
  • the spacer is rectangular, the width of the cutting groove is less than one hundredth of the length of the short side of the rectangle, and the length of the cutting groove is less than the length of the short side of the rectangle One-twentieth.
  • the tear-proof hole is circular or semi-circular, and its diameter is greater than twice the width of the cutting groove.
  • the gasket is rectangular, and the four corners of the rectangle have a limit structure, the limit structure includes a groove structure on the side of the top corner, the groove Is less than the depth of the cutting groove, and the width of the groove is less than one-twentieth the length of the short side of the rectangle.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is rectangular, and a top corner of the raised structure coincides with one of the top corners of the gasket, wherein the length of the overlapped portion is shorter than the length of the short side of the raised structure.
  • the gasket is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a convex structure on the side of the top corner.
  • the raised structure is circular, and the raised structure coincides with one of the top corner portions of the gasket, wherein the length of the overlapped portion is smaller than the radius of the raised structure.
  • the invention effectively eliminates the stress around the gasket due to the density difference between the gasket body and the gasket film layer by providing a cutting groove on the edge of the gasket, thereby avoiding the warpage and deformation of the gasket and reducing the The possibility of the gasket being blown away by the wind due to warpage during production.
  • a limit structure is provided on the top corner of the gasket, which cooperates with the packaging box to effectively reduce the possibility of the gasket being displaced due to external forces.
  • 1 (a) and 1 (b) are schematic structural views of gaskets for packaging boxes of display panels in the prior art
  • FIG. 2 is a schematic structural diagram of a packaging box for a display panel in the prior art
  • FIG. 3 is a schematic structural view of a gasket for a packaging box of a display panel in an embodiment of the invention
  • FIG. 4 is an enlarged view of a top corner of the gasket structure in FIG. 3;
  • FIG. 5 is a schematic structural diagram of a packaging box for a display panel in an embodiment of the present invention.
  • the thickness of the spacer is usually relatively thin, resulting in a relatively light weight.
  • the gasket in order to prevent the gasket from contaminating the panel under the high temperature and high humidity environment, the gasket usually needs to be coated on both sides.
  • the protective film layer is low density polyethylene (LDPE), which is a non-foamed material; and
  • the gasket body is made of expandable polyethylene (EPE), also known as pearl cotton, which is a foamed material.
  • EPE expandable polyethylene
  • the top layer gasket is usually thickened in the art, but this will bring about problems such as increased packaging costs, decreased packaging loading rate, and increased material types, which increase the difficulty of material management and control.
  • the present invention provides a gasket 300 for a packaging box of a display panel, wherein the gasket 300 includes a gasket body and a protective film layer covering the surface of the gasket body, and each edge of the gasket 300 At least one of the edges has a uniformly distributed cutting groove 320, the cutting groove 320 penetrates the gasket body and the protective film layer; one end of the cutting groove 320 is open, and penetrates the cutting groove 320 The edge of the gasket 300 located at the other end extends into the interior of the gasket 300, and has an anti-tear hole communicating with the cutting slot 320.
  • the function of the cutting groove 320 is to form a small opening at the edge of the gasket 300 to relieve the stress formed at the edge of the gasket 300 due to the density difference between the gasket body and the protective film layer.
  • the cutting groove 320 is perpendicular to the edge of the gasket 300.
  • the stress generated by the density difference between the gasket body and the protective film layer is evenly distributed in all directions, and for any point in the center of the gasket, the sum of the stresses it receives is zero.
  • the edge of the gasket because the edge area of the gasket receives the stress from the inside of the gasket, but there is no corresponding stress on the other side to balance, therefore, the edge of the gasket exists between the gasket body and the protective film layer.
  • the stress caused by the density difference will warp under the action of the stress.
  • the spacer 300 is rectangular, the width of the cutting groove 320 is less than one hundredth of the length of the short side of the rectangle, and the length of the cutting groove 320 Less than one-twentieth the length of the short side of the rectangle. This is because the stress on the inside of the gasket is balanced, and only a small hole needs to be opened at the edge to reduce or even eliminate the stress at the edge. Therefore, the depth of the cutting groove 320 does not need to be too deep, usually 5 ⁇ 10cm. Cutting grooves that are too deep are not only not conducive to stress relief, but also weaken the strength of the gasket itself.
  • a tear-proof hole is provided at the end of the cutting groove 320, as shown in FIG. 4.
  • the anti-tear hole can effectively disperse the force applied along the depth direction of the cutting groove 320 to prevent the gasket from being easily torn and enhance the strength of the gasket.
  • the tear-proof hole is circular or semi-circular, and its diameter is greater than twice the width of the cutting groove.
  • the spacer is rectangular, and the four corners of the rectangle have a limit structure, and the limit structure includes a groove structure on the side of the top corner.
  • the depth of the groove is less than the depth of the cutting groove, and the width of the groove is less than one-twentieth the length of the short side of the rectangle.
  • the spacer is rectangular, and at least one of the four top corners of the rectangle has a limiting structure.
  • the limiting structure is a geometric protrusion provided at the top corner of the gasket, and the gasket and the packaging box are fixed together by an irregular geometric shape, so that the gasket is not easily displaced.
  • the limit structure includes a convex structure 310 on the side of the top corner, the convex structure 310 is rectangular, and a top corner of the convex structure 310 is One of the top corners overlaps, wherein the length of the overlapped portion is less than the length of the short side of the raised structure.
  • the packaging box corresponding to the gasket 300 also has a groove structure matched with the raised structure 310, and can be engaged with the raised structure 310 to achieve a fixing effect.
  • the gasket 300 is rectangular, and at least one of the four top corners of the rectangle has a limiting structure, and the limiting structure includes a protrusion on the side of the top corner
  • the convex structure is circular, and the convex structure coincides with one of the top corner portions of the gasket, wherein the length of the coincident portion is smaller than the radius of the convex structure.
  • the present invention effectively eliminates the stress on the edge area of the gasket and avoids warpage by providing cutting grooves on the edge of the gasket, and effectively solves the technical problem of the displacement of the gasket under the influence of external forces.
  • the present invention provides a packaging box for a display panel.
  • the packaging box includes a gasket 300 and an outer shell 400 that can be engaged with the gasket 300.
  • the gasket 300 is A rectangle, including a gasket body and a protective film layer covering the surface of the gasket body, at least one edge of each edge of the gasket 300 has a uniformly distributed cutting groove 320, and the cutting groove 320 is The edge of the gasket where the cutting groove 320 is located is vertical and penetrates through the gasket body and the protective film layer; one end of the cutting groove 320 is opened and penetrates through the edge of the gasket 300 where the cutting groove 320 is located, and the other One end extends into the inside of the gasket 300, and has an anti-tear hole communicating with the cutting groove 320.
  • the spacer 300 is rectangular, the width of the cutting groove 320 is less than one hundredth of the length of the short side of the rectangle, and the length of the cutting groove is smaller than the rectangle One-twentieth the length of the short side. This is because the stress on the inside of the gasket is balanced, and only a small hole needs to be opened at the edge to reduce or even eliminate the stress at the edge. Therefore, the depth of the cutting groove 320 does not need to be too deep, usually 5 ⁇ 10cm. Cutting grooves that are too deep are not only not conducive to stress relief, but also weaken the strength of the gasket itself.
  • a tear-proof hole is provided at the end of the cutting groove 320, as shown in FIG. 4.
  • the anti-tear hole can effectively disperse the force applied along the depth direction of the cutting groove 320 to prevent the gasket from being easily torn and enhance the strength of the gasket.
  • the tear-proof hole is circular or semi-circular, and its diameter is greater than twice the width of the cutting groove 320.
  • the spacer 300 is rectangular, and the four corners of the rectangle have a limit structure 310, and the limit structure 310 includes a groove structure on the side of the top corner.
  • the depth of the groove is less than the depth of the cutting groove 320, and the width of the groove is less than one-twentieth the length of the short side of the rectangle.
  • the gasket 300 is rectangular, and at least one of the four top corners of the rectangle has a limiting structure 310, and the limiting structure 310 includes a convex located on the side of the top corner
  • the raised structure is rectangular, and a top corner of the raised structure coincides with one of the top corners of the gasket, wherein the length of the overlapped portion is less than the length of the short side of the raised structure.
  • the gasket 300 is rectangular, and at least one of the four top corners of the rectangle has a limiting structure 310, and the limiting structure 310 includes a convex located on the side of the top corner
  • the raised structure is circular, and the raised structure coincides with one of the top corner portions of the gasket, wherein the length of the overlapped portion is smaller than the radius of the raised structure.
  • the present invention effectively eliminates the stress around the gasket due to the density difference between the gasket body and the gasket film layer by providing a cutting groove at the edge of the gasket, thereby avoiding the gasket
  • the warpage of the sheet reduces the possibility of the gasket being blown away by the wind due to warpage during production.
  • a limit structure is provided on the top corner of the gasket, which cooperates with the packaging box to effectively reduce the possibility of the gasket being displaced due to external forces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Buffer Packaging (AREA)
  • Packages (AREA)
  • Cartons (AREA)
  • Gasket Seals (AREA)

Abstract

一种用于显示面板的包装盒的垫片（300）和使用该垫片（300）的包装盒。所述垫片（300）为矩形，包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片（300）的各条边沿中的至少一条边沿上具有均匀分布的裁切槽（320），所述裁切槽（320）贯穿所述垫片本体和保护膜层；所述裁切槽（320）的一端开口，并贯穿所述裁切槽所在的垫片（300）边沿，另一端延伸至所述垫片（300）内部，且具有与所述裁切槽（320）连通的防撕裂孔。通过设置上述裁切槽（320），可以有效减小边缘处连续不断的区域长度，从而减小边缘处的应力，避免垫片发生翘曲。

Description

用于显示面板的垫片和包装盒 技术领域
本发明涉及电子显示领域，尤其涉及一种用于显示面板的垫片和包装盒。
 背景技术
液晶面板的包装用间隔垫片通常使用双面覆膜的发泡材料（Expandable Polyethylene，EPE），用以提供足够的缓冲。
 技术问题
为了提升单位包装单元内的面板装载率，间隔垫片通常厚度比较薄，相对的重量也比较轻。其次，为了避免垫片在高温高湿环境下有异物析出，污染面板，垫片通常需要进行双面覆膜处理，膜层为非发泡材料，如低密度聚乙烯（LDPE），垫片本体为发泡材料EPE。两者密度上的差异导致覆合裁切后垫片比较容易翘曲形变，整箱面板进入自动线设备内时，由于设备内存在一定的压差产生侧向风，垫片本体翘曲后极易被吹走，造成设备宕机。
为防止该问题发生，通常的做法是将顶层垫片本体加厚，但这样会带来包装成本上升、包装装载率下降以及材料种类增多等问题，加重了物料管控难度。
 技术解决方案
本发明提供一种用于显示面板的垫片和包装盒，以解决现有技术中的垫片易翘曲变形的技术问题。
为解决上述问题，本发明提供的技术方案如下：
一种用于显示面板的包装盒的垫片，其包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔，其中，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
根据本发明的其中一个方面，所述垫片为矩形，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
相应的，本发明还提供了一种用于显示面板的包装盒的垫片，其包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔。
根据本发明的其中一个方面，所述垫片为矩形，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
相应的，本发明提供了一种用于显示面板的包装盒，其中，所述包装盒包括垫片和能够与所述垫片卡合的外壳体，所述垫片包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔。
根据本发明的其中一个方面，所述垫片为矩形，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
根据本发明的其中一个方面，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
 有益效果
本发明通过在垫片的边缘设置裁切槽，有效的消解了垫片周围由于垫片本体和垫片膜层之间的密度差异而产生的应力，从而避免了垫片翘曲变形，降低了生产中垫片由于翘曲而被风吹走的可能性。同时，在垫片的顶角上设置限位结构，通过与包装盒的配合，有效降低了垫片受外力影响产生移位的可能性。
 附图说明
图1（a）和图1（b）为现有技术中的用于显示面板的包装盒的垫片的结构示意图；
图2为现有技术中的用于显示面板的包装盒的结构示意图；
图3为本发明的一个实施例中的用于显示面板的包装盒的垫片的结构示意图；
图4为图3中的垫片结构的一个顶角处的放大图；
图5为本发明的一个实施例中的用于显示面板的包装盒的结构示意图。
 本发明的实施方式
以下各实施例的说明是参考附加的图示，用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语，例如[上]、[下]、[前]、[后]、[左]、[右]、[内]、[外]、[侧面]等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。在图中，结构相似的单元是用以相同标号表示。
首先对现有技术进行简要说明，参见图1（a）和图1（b），图1（a）和图1（b）为现有技术中的用于显示面板的包装盒的垫片的结构示意图。
还未进行封装的液晶面板在生产、运输的过程中通常采用数个面板平行叠放的方式进行包装，为了保护液晶面板，通常需要在多个平行叠放的面板之间放置垫片进行保护和缓冲。实际中，上述包装用的间隔垫片通常使用双面覆膜的发泡材料以提供足够的缓冲，如图1（b）所示。
通常，为了提升单位包装盒内的面板装载率，间隔垫片的厚度通常比较薄，导致其重量相对比较轻。同时，为了避免垫片在高温高湿环境下有异物析出污染面板，垫片通常需要进行双面覆膜处理，其中保护膜层为低密度聚乙烯（即LDPE），为非发泡材料；而垫片本体为可发性聚乙烯（即EPE），又称为珍珠棉，为发泡材料。垫片本体和保护膜层密度上的差异导致覆合裁切后垫片边缘比较容易翘曲形变。此外，参见图1（a），由于垫片与包装盒的卡合简单，整箱面板进入自动线设备内时，由于设备内存在一定的压差产生侧向风，垫片翘曲后极易被吹走，如图2所示，从而造成设备宕机。
为防止该问题的发生，本领域中通常将顶层垫片加厚，但这样会带来包装成本上升、包装装载率下降以及材料种类增多等问题，加重了物料管控难度。
下面将结合附图对本发明进行详细说明。
本发明提供了一种用于显示面板的包装盒的垫片300，其中，所述垫片300包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片300的各条边沿中的至少一条边沿上具有均匀分布的裁切槽320，所述裁切槽320贯穿所述垫片本体和保护膜层；所述裁切槽320的一端开口，并贯穿所述裁切槽320所在的垫片300边沿，另一端延伸至所述垫片300内部，且具有与所述裁切槽320连通的防撕裂孔。
所述裁切槽320的作用是通过在垫片300的边缘形成小的开口，以消解由于垫片本体和保护膜层之间的密度差异在所述垫片300的边缘形成的应力。优选的，所述裁切槽320与所述垫片300的边缘垂直。在垫片中央，垫片本体和保护膜层之间的密度差异产生的应力是沿各个方向均匀分布的，对于垫片中央的任意一点，其所受到的应力总和为零。而对于垫片边缘而言，由于垫片边缘区域承受了来自垫片内部的应力，但另一侧没有对应的应力进行平衡，因此，垫片边缘存在由于垫片本体和保护膜层之间的密度差异产生的应力，并会在所述应力的作用下发生翘曲，边缘越长，所述应力越大，翘曲程度也越明显。因此，通过在垫片300的边缘形成裁切槽320，能够有效的减小边缘处连续不断的区域的长度，从而减小边缘处的应力，避免垫片发生翘曲。
具体的，根据本发明的一个具体实施例，所述垫片300为矩形，所述裁切槽320的宽度小于所述矩形短边长度的一百分之一，所述裁切槽320的长度小于所述矩形短边长度的二十分之一。这是由于垫片内部所承受的应力是平衡的，仅需要在边缘处开小孔即可减小甚至消除边缘处的应力，因此所述裁切槽320的深度无需过深，通常为5~10cm。过深的裁切槽不仅不利于消除应力，而且会减弱垫片本身的强度。
同时，为了避免裁切槽320的存在导致垫片300容易被沿着所述裁切槽撕裂，在所述裁切槽320末端设置了防撕裂孔，如图4所示。防撕裂孔可以有效的分散沿着裁切槽320深度方向施加的力，避免所述垫片被轻易撕裂，增强了垫片的强度。
具体的，为了更好的消除沿着裁切槽320深度方向施加的力，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
在本发明的一个实施例中，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
在本发明的另一个实施例中，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构。限位结构为设置在所述垫片顶角处的几何凸起，通过不规则的几何形状将所述垫片与包装盒固定在一起，使得所述垫片不易产生移位。
具体的，参见图3，所述限位结构包括位于顶角侧边上的凸起结构310，所述凸起结构310为矩形，所述凸起结构310的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。相应的，与所述垫片300对应的包装盒也具有与所述凸起结构310相配合的凹槽结构，能够与所述凸起结构310彼此卡合，实现固定作用。
在本发明的另一个实施例中，所述垫片300为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
本发明通过在垫片边缘设置裁切槽，有效的消解了垫片边缘区域的应力，避免其产生翘曲，有效的解决了垫片在外力的影响下产生移位的技术问题。
相应的，参见图5，本发明提供了一种用于显示面板的包装盒，所述包装盒包括垫片300和能够与所述垫片300卡合的外壳体400，所述垫片300为矩形，包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片300的各条边沿中的至少一条边沿上具有均匀分布的裁切槽320，所述裁切槽320与所述裁切槽320所在的垫片边沿垂直，且贯穿所述垫片本体和保护膜层；所述裁切槽320的一端开口，并贯穿所述裁切槽320所在的垫片300边沿，另一端延伸至所述垫片300内部，且具有与所述裁切槽320连通的防撕裂孔。
在本发明的一个实施例中，所述垫片300为矩形，所述裁切槽320的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。这是由于垫片内部所承受的应力是平衡的，仅需要在边缘处开小孔即可减小甚至消除边缘处的应力，因此所述裁切槽320的深度无需过深，通常为5~10cm。过深的裁切槽不仅不利于消除应力，而且会减弱垫片本身的强度。
同时，为了避免裁切槽320的存在导致垫片300容易被沿着所述裁切槽撕裂，在所述裁切槽320末端设置了防撕裂孔，如图4所示。防撕裂孔可以有效的分散沿着裁切槽320深度方向施加的力，避免所述垫片被轻易撕裂，增强了垫片的强度。具体的，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽320宽度的两倍。
根据本发明的其中一个方面，所述垫片300为矩形，所述矩形的四个顶角处具有限位结构310，所述限位结构310包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽320的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
在本发明的一个实施例中，所述垫片300为矩形，所述矩形的四个顶角中的至少一个具有限位结构310，所述限位结构310包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
在本发明的一个实施例中，所述垫片300为矩形，所述矩形的四个顶角中的至少一个具有限位结构310，所述限位结构310包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
本发明的有益效果为：本发明通过在垫片的边缘设置裁切槽，有效的消解了垫片周围由于垫片本体和垫片膜层之间的密度差异而产生的应力，从而避免了垫片翘曲变形，降低了生产中垫片由于翘曲而被风吹走的可能性。同时，在垫片的顶角上设置限位结构，通过与包装盒的配合，有效降低了垫片受外力影响产生移位的可能性。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (15)

  1. 一种用于显示面板的包装盒的垫片，其包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔，其中，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
  2. 根据权利要求1所述的垫片，其中，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
  3. 根据权利要求1所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
  4. 根据权利要求1所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
  5. 根据权利要求1所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
  6. 一种用于显示面板的包装盒的垫片，其包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔。
  7. 根据权利要求6所述的垫片，其中，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
  8. 根据权利要求6所述的垫片，其中，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
  9. 根据权利要求6所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
  10. 根据权利要求6所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为矩形，所述凸起结构的一个顶角与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构短边的长度。
  11. 根据权利要求6所述的垫片，其中，所述垫片为矩形，所述矩形的四个顶角中的至少一个具有限位结构，所述限位结构包括位于顶角侧边上的凸起结构，所述凸起结构为圆形，所述凸起结构与所述垫片的其中一个顶角部分重合，其中重合部分的长度小于所述凸起结构的半径。
  12. 一种用于显示面板的包装盒，其包括垫片和能够与所述垫片卡合的外壳体，所述垫片包括垫片本体和覆盖在垫片本体表面的保护膜层，所述垫片的各条边沿中的至少一条边沿上具有均匀分布的裁切槽，所述裁切槽贯穿所述垫片本体和保护膜层；所述裁切槽的一端开口，并贯穿所述裁切槽所在的垫片边沿，另一端延伸至所述垫片内部，且具有与所述裁切槽连通的防撕裂孔。
  13. 根据权利要求12所述的包装盒，其中，所述裁切槽的宽度小于所述矩形短边长度的一百分之一，所述裁切槽的长度小于所述矩形短边长度的二十分之一。
  14. 根据权利要求12所述的包装盒，其中，所述防撕裂孔为圆形或半圆形，且其直径大于所述裁切槽宽度的两倍。
  15. 根据权利要求12所述的包装盒，其中，所述垫片为矩形，所述矩形的四个顶角处具有限位结构，所述限位结构包括位于顶角侧边上的凹槽结构，所述凹槽的深度小于所述裁切槽的深度，所述凹槽的宽度小于所述矩形短边长度的二十分之一。
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