A packaging box with pearl wool side lining
By using rectangular corrugated pearl cotton support strips in the inner lining of the packaging box, the high cost and environmental protection issues of pearl cotton are solved, achieving a high-performance protective effect at a cost-effective price, which is in line with green packaging design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BRIGHT DAIRY & FOOD CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-09
AI Technical Summary
Pearl cotton is expensive and does not meet the requirements of green environmental protection, making it difficult to use widely in packaging boxes.
Design a packaging box with pearl cotton side lining and use rectangular corrugated support strips to reduce material usage and improve protective strength, which is in line with the concept of green and low-carbon packaging design.
By reducing the amount of pearl cotton used, materials are saved by 40%, improving cost-effectiveness, meeting the full-cycle protection needs of items inside the packaging box, and complying with environmental protection requirements.
Smart Images

Figure CN224336209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging box technology, specifically to a packaging box with pearl cotton side lining. Background Technology
[0002] With increasing market demand, gift-boxed goods are becoming more common, and gift boxes are getting larger. The extra space inside these boxes requires cushioning material to protect the contents during transport. Pearl cotton (EPE) is one option for this type of lining, offering higher strength than paper lining and making it suitable for a wider range of production, transportation, and storage environments. It provides more stable protection for items inside each gift box, such as milk cartons, and also creates a better display effect. However, some problems exist in the actual production of pearl cotton lining:
[0003] (1) Pearl cotton has a high cost, which will increase the total cost of dairy products and make them less competitive in the market;
[0004] (2) Pearl cotton lining has more advantages than paper lining, but it does not meet the mainstream demand for green and environmentally friendly packaging development, that is, plastic materials should be used as little as possible or even not at all. Utility Model Content
[0005] The purpose of this invention is to provide a packaging box with a pearl cotton side lining. The packaging box uses a novel pearl cotton lining, which provides necessary protection for the items inside the packaging box while reducing the use of pearl cotton material in the packaging.
[0006] To achieve the above objectives, this utility model is specifically implemented through the following technical solution:
[0007] A packaging box with pearl cotton side lining includes a box body and linings symmetrically arranged on both sides of the box body. The linings are made of pearl cotton and include a top plate and support strips vertically fixed to the bottom surface of the top plate. The number of support strips is at least 3, which are arranged longitudinally along the bottom surface of the top plate to form a rectangular wave structure. The width of the support strips is the same as the width of the top plate, and the side edges of the support strips face the center of the box body.
[0008] Furthermore, the distance between adjacent support strips is greater than or equal to the thickness of the support strip.
[0009] Furthermore, the thickness of the top plate is 10~20mm.
[0010] Furthermore, the thickness of the support strip is 10~20mm.
[0011] Compared with existing technologies, the support strips in this invention form a rectangular corrugated structure on the bottom surface of the top plate. While maintaining the integrity of the top display surface of the inner liner, it provides the protective strength required for the entire life cycle of the milk carton inside the packaging box. The rectangular corrugated structure can form an interlocking structure, enabling each support strip to provide the necessary pressure resistance. It also avoids waste of scrap material between support strips during processing. Compared with the non-serrated structure design, the material used for a single inner liner in this invention can be reduced by about 40%. The same amount of material can be used to make 5 inner liners instead of 3, which is in line with the concept of green and low-carbon packaging design. At the same time, it greatly narrows the price difference with paper liners, making it more cost-effective. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the inner lining structure in this utility model;
[0014] Figure 3 This is a cross-sectional schematic diagram of the two inner linings in this utility model.
[0015] In the diagram, 1-box body; 2-lining; 21-top plate; 22-supporting strip. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0017] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0018] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.
[0019] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0020] like Figures 1 to 3 As shown, a packaging box with pearl cotton side lining according to the present invention includes a box body 1 and an inner lining 2 symmetrically arranged on both sides inside the box body 1. The inner lining 2 is made of pearl cotton and includes a horizontally arranged top plate 21 and vertically fixed support strips 22 on the bottom surface of the top plate 21. The number of support strips 22 is at least 3, which are arranged longitudinally along the bottom surface of the top plate 21 to form a rectangular wave structure. The width of the support strips 22 is the same as the width of the top plate 21. The side edges of the support strips 22 face the middle of the box body 1. The number of support strips 22 is adjusted according to the size of the packaging box.
[0021] In a preferred embodiment, the distance between adjacent support strips 22 is greater than or equal to the thickness of the support strip 22, allowing the two inner liners 2 to interlock and be nested together. During processing, a rectangular wave path can be used to cut within a single piece of pearl cotton, simultaneously producing two inner lining workpieces that meet the cushioning requirements. More preferably, the distance between adjacent support strips 22 is no greater than twice the thickness of the support strip 22; more preferably, the distance between adjacent support strips 22 is equal to the thickness of the support strip 22, satisfying the requirements within this dimensional range.
[0022] Preferably, the thickness of the top plate 21 is 10~20mm. The thickness of the top plate needs to meet the requirements that the top surface will not deform during transportation and that the items inside the box will not shift excessively. The width and length of the top plate are adjusted according to the size of the packaging box and the size of the items inside the box.
[0023] Preferably, the thickness of the support strip 22 is 10~20mm, and the support strip 22 is made of pearl cotton.
[0024] In this invention, the support strip 22 forms a rectangular corrugated structure on the bottom surface of the top plate 21. While maintaining the integrity of the top display surface of the inner lining, it provides the protective strength required for the entire life cycle of the milk carton inside the packaging box. The rectangular corrugated structure can form an interlocking structure, enabling each support strip to provide the necessary load-bearing capacity, and also avoiding waste of scrap material between support strips during processing.
[0025] Compared to a non-serrated structure design, this utility model can save up to 40% of the material used for a single inner liner. The same amount of material can be used to make 5 inner liners instead of 3, which is in line with the concept of green and low-carbon packaging design. At the same time, it greatly narrows the price difference with paper linerboard, making it more cost-effective.
[0026] The specific embodiments described herein are merely illustrative of the invention and are not intended to limit it. Those skilled in the art can make modifications to these embodiments without contributing any inventive step after reading this specification, but such modifications are protected by patent law as long as they fall within the scope of the claims of this invention.
Claims
1. A packaging box with pearl cotton side lining, characterized in that, It includes a box body (1) and an inner lining (2) symmetrically arranged on both sides of the box body. The inner lining is made of pearl cotton and includes a top plate (21) and support strips (22) vertically fixed to the bottom surface of the top plate. The number of support strips is at least 3, which are arranged longitudinally along the top plate. The width of the support strips is the same as the width of the top plate, and the side edges of the support strips face the middle of the box body.
2. The packaging box with pearl cotton side lining according to claim 1, characterized in that, The distance between adjacent support strips is greater than or equal to the thickness of the support strip.
3. The packaging box with pearl cotton side lining according to claim 1, characterized in that... The thickness of the top plate is 10~20mm.
4. The packaging box with pearl cotton side lining according to claim 1, characterized in that, The thickness of the support strip is 10~20mm.