Packaging and method for manufacturing same

Abstract

This application relates to a packaging product suitable for encapsulating solid materials such as adsorbents and volatiles, and a method for manufacturing the packaging product. The packaging product includes a packaging tube and a solid packaged object encapsulated within the packaging tube. The packaged object includes an adsorbent or a volatile agent. The packaging tube includes: a cylindrical body with openings at both ends, formed of a polymer material; near each opening, an annular stepped surface is formed on the inner wall of the cylinder facing the opening; and the cylinder has an inwardly rolled edge at each opening, the rolled edge opposing the stepped surface to form an annular rolled edge groove; and two circular caps, formed of a polymer material and breathable, with the edges of the caps embedded in the rolled edge grooves, thereby closing the openings.

Description

Technical Field

[0001] This application relates to the field of packaging technology, specifically to a packaging product suitable for encapsulating solid materials such as adsorbents and volatiles, and a method for manufacturing the packaging product. Background Technology

[0002] Functional solid materials such as adsorbents and volatiles are widely used in daily necessities, industrial production, and home environmental purification. Examples include desiccants, deodorizing adsorbents, aromatic volatiles, and dehumidifiers. These materials typically need to be encapsulated in specialized packaging to ensure stable sealing, prevent leakage, and allow for the normal exchange of gases, moisture, or active ingredients to perform their core functions of adsorption and volatilization.

[0003] In existing technologies, packaging structures for solid adsorbents and volatile agents mostly employ non-woven fabric sewing, heat-sealed plastic film, or paper packaging. These types of packaging have the following technical drawbacks: Poor packaging stability: Non-woven fabric seams and heat-sealed edges are prone to cracking during transportation and use, leading to leakage of solid materials, environmental pollution or affecting the performance of use. Uncontrollable breathability: The breathability rate of ordinary breathable materials is difficult to control precisely, and problems such as excessively fast adsorption / evaporation leading to failure or excessively slow adsorption / evaporation failing to meet usage requirements are prone to occur. Insufficient structural strength: Paper and flexible plastic packaging are easily deformed by compression, which damages the shape of the internal materials and reduces their performance. The manufacturing process is complex: multiple stitching and heat sealing processes result in low production efficiency and make it difficult to uniformly control the sealing quality.

[0004] Therefore, developing a packaging product that is securely sealed, breathable and stable, structurally strong and easy to manufacture has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] In view of this, this application provides a packaging product suitable for encapsulating solid materials such as adsorbents and volatiles, as well as a method for manufacturing the packaging product. The packaging product has a stable encapsulation structure, no risk of leakage, uniform and controllable air permeability, and a simple and efficient manufacturing process, making it suitable for mass production.

[0006] In a first aspect, a packaging product is proposed, comprising a packaging tube and a solid packaged item encapsulated within the packaging tube, the packaged item comprising an adsorbent or a volatile agent, and the packaging tube comprising: A cylindrical body with openings at both ends is formed of a polymer material. Near each opening, an annular stepped surface is formed on the inner wall of the body facing the opening side. The body has an inward rolled edge at each opening, and the rolled edge is opposite to the stepped surface to form an annular rolled edge groove. Two circular caps, made of a polymer material and breathable, have their edges fitted into the rolled grooves, thereby closing the opening.

[0007] Preferably, the cap has an outer surface and an inner surface that are disposed opposite to each other, the inner surface abutting against the stepped surface, and the outer surface abutting against the rolled edge.

[0008] Preferably, after the cap is placed on the stepped surface, the rolled edge is formed by turning the axial end of the cylinder inward.

[0009] Preferably, the cap is formed of high-density polyethylene nonwoven fabric.

[0010] Preferably, the cylindrical body is formed of high-density polyethylene.

[0011] Preferably, the stepped surface includes: First torus; The second annular surface is located on the outer periphery of the first annular surface and is continuous with the first annular surface; The second toroidal surface is formed as an inclined surface that extends further away from the opening as it is further away from the first toroidal surface.

[0012] Preferably, the edge of the cap is pressed by the rolled edge to contact the second annular surface, thereby causing the edge of the cap to be bent away from the opening.

[0013] Preferably, the first annular surface is a plane perpendicular to the axial direction of the cylinder.

[0014] Preferably, the second annular surface defines an annular recess that is recessed axially away from the opening in the cylinder, and the end of the rolled edge extends into the annular recess.

[0015] Secondly, a packaging article as described in the first aspect is proposed, comprising: A cylindrical body with openings at both ends is formed by injection molding. Near each opening, an annular stepped surface is formed on the inner wall of the body facing the opening side. The stepped surface includes a first annular surface and a second annular surface located on the outer periphery of the first annular surface and continuous with the first annular surface. The second annular surface is formed as an inclined surface that extends further away from the opening as it is further away from the first annular surface. A first cap in the shape of a disc, formed of a polymer material and having a breathable structure, is provided, and the first cap is placed on one of the stepped surfaces, i.e., the first step surface; When the axial end of the cylinder is heated, it is rolled towards the first stepped surface, thereby forming a first rolled edge that abuts against the edge of the first cover. The edge of the first cover is pressed by the first rolled edge into contact with the second annular surface of the first stepped surface. The cylinder is filled with a solid packaged item, which includes an adsorbent or a volatile agent. A second, permeable, circular cap made of a polymer material is provided, and the second cap is placed on another stepped surface, namely the second stepped surface; The other axial end of the cylinder is heated and rolled towards the second step surface to form a second rolled edge that abuts against the edge of the second cover. The edge of the second cover is pressed by the second rolled edge into contact with the second annular surface of the second step surface.

[0016] This application uses a rolled edge groove formed by rolled edge and stepped surface to install the cap, and the stepped surface is designed with a special configuration, which has high sealing strength and is not easy to crack or leak; it adopts a breathable cap in combination with a rigid cylinder, which has a stable air permeability rate and is not easily deformed; it achieves automated production through injection molding and heated rolled edge process, with fewer processes, high efficiency, and is suitable for mass production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0018] Figure 1 This is a schematic diagram of the appearance of the packaging provided in the embodiments of this application.

[0019] Figure 2 This is a schematic diagram of the appearance of the packaging provided in the embodiments of this application.

[0020] Figure 3 This is a cross-sectional schematic diagram of the packaging tube provided in the embodiments of this application.

[0021] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0022] Figure 5 This is a schematic diagram of the structure of the packaging tube before the rolled edge is formed at one end during the manufacturing process of the packaging product, as provided in the embodiments of this application.

[0023] Figure 6 This is a flowchart of a method for manufacturing packaging products provided in an embodiment of this application.

[0024] in: 10-Packaging tubes; 1-Cylinder body, 2-Cap; 3-Step surface, 3a-First torus, 3b-Second torus; 4- Annular recess; 5-Curled edge; 6-Curling groove. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0026] Figures 1 to 5 The illustration shows a packaging article provided in an embodiment of this application, which includes a packaging tube 10 and a solid packaged item encapsulated within the packaging tube 10. The illustration of the packaged item is omitted; it may include an adsorbent such as a desiccant or oxygen absorber, or a fragrance volatile agent such as one attached to fragrance particles.

[0027] The packaging tube 10 is a closed container that cannot be disassembled (can only be destructively opened), and includes a tube body 1 and two caps 2.

[0028] The cylinder 1 is a cylindrical shape with openings at both ends and is made of a polymer material. Near each opening, an annular stepped surface 3 is formed on the inner wall of the cylinder 1 facing the opening side, and the cylinder 1 has an inwardly rolled edge 5 at each opening, which is opposite to the stepped surface 3 to form an annular rolled edge groove 6. The rolled edge 5 extends in an annular shape around the entire circumference of the cylinder 1.

[0029] The cap 2 is a circular piece made of polymer material and is breathable. The edge of the cap 2 is embedded in the rolled edge groove 6, so that the cap 2 seals the opening of the cylinder 1.

[0030] In some embodiments, the cylinder 1 is injection molded from high-density polyethylene (HDPE), possessing a certain structural strength and being essentially airtight. The cap 2 is formed from HDPE nonwoven fabric, which has densely packed pores, thus providing good air permeability and allowing gaseous substances to enter and exit the packaging cylinder 10. In this way, both axial ends of the packaging cylinder 10 have good air permeability, allowing gaseous substances in the environment (such as oxygen, water vapor, and gaseous volatiles) to pass through and come into contact with the internal adsorbent. This allows the adsorbent to perform its adsorption function without the packaging cylinder 10 being tampered with, or allows gaseous substances from the internal volatiles to pass through and enter the external environment, providing fragrance. Furthermore, since the packaging cylinder 10 only has good air permeability at the caps 2 at both ends, internal flow is easily formed during use, which helps to improve adsorption or evaporation efficiency.

[0031] The cap 2 has an outer surface and an inner surface that are arranged opposite to each other. The inner surface abuts against the stepped surface 3 on the cylinder 1, and the outer surface abuts against the rolled edge 5 of the cylinder 1.

[0032] After the cap 2 is placed on the stepped surface 3, the axial end of the cylinder 1 is rolled inward to form the rolled edge 5.

[0033] Please see Figure 4 The aforementioned stepped surface 3 includes a first annular surface 3a and a second annular surface 3b. The second annular surface 3b is located on the outer periphery of the first annular surface 3a and is continuous with the first annular surface 3a. Furthermore, the second annular surface 3b is formed as an inclined surface extending further away from the opening than from the first annular surface 3a. The edge of the cap 2 is pressed by the rolled edge 5 to contact the second annular surface 3b (and the first annular surface 3a), thereby causing the edge of the cap 2 to be bent away from the opening. This design provides excellent connection strength between the cap 2 and the cylinder 1, preventing the edge of the cap 2 from accidentally detaching from the rolled edge 5.

[0034] In this embodiment, the first annular surface 3a is a plane perpendicular to the axial direction of the cylinder 1, and the second annular surface 3b is a conical surface.

[0035] The second annular surface 3b defines an annular recess 4 that is recessed away from the opening in the axial direction of the cylinder 1. The end of the rolled edge 5 extends into the annular recess 4, and the edge of the cap 2 is pressed and positioned at the annular recess 4.

[0036] Please see Figure 6 In conjunction with the above description, this application also provides a method for manufacturing the aforementioned packaging article, the method comprising: S601, a cylindrical body 1 with openings at both ends is formed by injection molding. Near each opening, an annular stepped surface 3 facing the opening side is formed on the inner wall of the cylindrical body 1. The stepped surface 3 includes a first annular surface 3a and a second annular surface 3b located on the outer periphery of the first annular surface 3a and continuous with the first annular surface 3a. The second annular surface 3b is formed as an inclined surface (conical surface) extending further away from the opening as it is further away from the first annular surface 3a.

[0037] S602, a first cap 2 in the shape of a disc made of a polymer material and having air permeability is provided, and the first cap 2 is placed on one of the stepped surfaces 3, i.e., the first stepped surface 3.

[0038] S603, the axial end of the cylinder 1 is heated and rolled towards the first step surface 3, thereby forming a first rolled edge 5 that abuts against the edge of the first cover 2. The edge of the first cover 2 is pressed by the first rolled edge 5 into contact with the second annular surface 3b of the first step surface.

[0039] Heating the axial end of the cylinder 1 gives it good deformability, making it easy to process the rolled edge 5. After the rolled edge 5 cools down, it solidifies to press the edge of the cap 2.

[0040] S604, a solid packaged substance is filled into a cylinder 1, the packaged substance including an adsorbent or a volatile agent.

[0041] S605, provides a second cover 2 in the shape of a disc made of a polymer material and having air permeability, and places the second cover 2 on another stepped surface 3, namely the second stepped surface 3.

[0042] S606, the other axial end of the cylinder 1 is heated and rolled towards the second step surface 3, thereby forming a second rolled edge 5 that abuts against the edge of the second cover 2. The edge of the second cover 2 is pressed by the second rolled edge 5 into contact with the second annular surface 3b of the second step surface 3.

Claims

1. A package, characterized in that The package includes a packaging tube and a solid packaged item encapsulated within the packaging tube, the packaged item comprising an adsorbent or a volatile agent, the packaging tube comprising: A cylindrical body with openings at both ends is formed of a polymer material. Near each opening, an annular stepped surface is formed on the inner wall of the body facing the opening side. The body has an inward rolled edge at each opening, and the rolled edge is opposite to the stepped surface to form an annular rolled edge groove. Two circular caps, made of a polymer material and breathable, have their edges fitted into the rolled grooves, thereby closing the opening.

2. The package of claim 1, wherein, The cap has an outer surface and an inner surface that are oppositely disposed, the inner surface abutting against the stepped surface, and the outer surface abutting against the rolled edge.

3. The package of claim 2, wherein, After the cap is placed on the stepped surface, the rolled edge is formed by turning the axial end of the cylinder inward.

4. The package according to any one of claims 1 to 3, characterized in that The cap is formed of high-density polyethylene nonwoven fabric.

5. The package according to any one of claims 1 to 4, characterized in that The cylinder is made of high-density polyethylene.

6. The package according to any one of claims 1 to 5, characterized in that The stepped surface includes: First torus; The second annular surface is located on the outer periphery of the first annular surface and is continuous with the first annular surface; The second toroidal surface is formed as an inclined surface that extends further away from the opening as it is further away from the first toroidal surface.

7. The package of claim 6, wherein, The edge of the cap is pressed into contact with the second annular surface by the rolled edge, thereby causing the edge of the cap to be bent away from the opening.

8. The package of claim 6, wherein, The first annular surface is a plane perpendicular to the axial direction of the cylinder.

9. The package of claim 6, wherein, The second annular surface defines an annular recess that is recessed axially away from the opening in the cylinder, and the end of the rolled edge extends into the annular recess.

10. A package according to any one of claims 1 to 9, characterized in that include: A cylindrical body with openings at both ends is formed by injection molding. Near each opening, an annular stepped surface is formed on the inner wall of the body facing the opening side. The stepped surface includes a first annular surface and a second annular surface located on the outer periphery of the first annular surface and continuous with the first annular surface. The second annular surface is formed as an inclined surface that extends further away from the opening as it is further away from the first annular surface. A first cap in the shape of a disc, formed of a polymer material and having a breathable structure, is provided, and the first cap is placed on one of the stepped surfaces, i.e., the first step surface; When the axial end of the cylinder is heated, it is rolled towards the first stepped surface, thereby forming a first rolled edge that abuts against the edge of the first cover. The edge of the first cover is pressed by the first rolled edge into contact with the second annular surface of the first stepped surface. The cylinder is filled with a solid packaged item, which includes an adsorbent or a volatile agent. A second, permeable, circular cap made of a polymer material is provided, and the second cap is placed on another stepped surface, namely the second stepped surface; The other axial end of the cylinder is heated and rolled towards the second step surface to form a second rolled edge that abuts against the edge of the second cover. The edge of the second cover is pressed by the second rolled edge into contact with the second annular surface of the second step surface.

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