Pearl wool structure with high floating force
By employing a multi-layered pearl cotton structure and bonding technology, the buoyancy and lightness of the pearl cotton are enhanced, solving the problem of insufficient buoyancy in existing pearl cotton structures. This also achieves mechanical strength and stability under high-temperature environments, making it suitable for life jacket filling materials.
Patent Information
- Application Number
- CN202422887635.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
AI Technical Summary
When existing pearl cotton structures are used as filling materials for life jackets, they lack sufficient buoyancy and cannot effectively keep the head of a person in the water above the surface, thus affecting their practicality.
The structure employs a multi-layer pearl cotton structure, including a first pearl cotton layer, a second pearl cotton layer, a third pearl cotton layer, and a sand-like cotton layer. Hollow fiber balls and hollow fiber tubes are placed between each layer and bonded together with an adhesive layer to form a lightweight structure with a large gas storage space.
The improved buoyancy and lightness of the pearl cotton allow the pearl cotton body to maintain mechanical strength and stability in high-temperature environments, effectively keeping the head of a person who has fallen into the water above the surface.
Smart Images

Figure CN223494044U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pearl cotton, and in particular to a pearl cotton structure with strong buoyancy. Background Technology
[0002] Polyethylene foam, also known as EPE pearl cotton, is a non-crosslinked closed-cell structure and a new type of environmentally friendly packaging material. It is composed of countless independent air bubbles generated by the physical foaming of low-density polyethylene, which overcomes the shortcomings of ordinary foam such as fragility, deformation and poor resilience. It has many advantages such as water and moisture resistance, shock resistance, sound insulation, heat insulation, good plasticity, strong toughness, recyclability, environmental protection and strong impact resistance. Therefore, it is also an important material for life jacket filling.
[0003] Currently, existing pearl cotton structures, when used as filling materials for life jackets, have poor buoyancy and insufficient buoyancy when worn, failing to effectively keep the head of a person in the water above the surface, thus affecting the practicality of pearl cotton. Therefore, a pearl cotton structure with strong buoyancy is proposed. Utility Model Content
[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.
[0005] A highly buoyant pearl cotton structure includes a first pearl cotton layer, a second pearl cotton layer, a third pearl cotton layer, and a sanded cotton layer. The first pearl cotton layer is laterally attached to the surface of the second pearl cotton layer, the second pearl cotton layer is laterally attached to the surface of the third pearl cotton layer, and the third pearl cotton layer is laterally attached to the surface of the sanded cotton layer. The pearl cotton body is formed by the mutual adhesion of the first, second, third, and sanded cotton layers. The first pearl cotton layer has a first interlayer, which is laterally located inside the first pearl cotton layer. The second pearl cotton layer is formed by quilting several first hollow fiber balls. The second pearl cotton layer has a second interlayer, which is laterally located inside the second pearl cotton layer. The second interlayer is formed by quilting several first hollow fiber tubes, and each of the several first hollow fiber tubes is filled with cotton wool. The third pearl cotton layer has a third interlayer, which is laterally located inside the third pearl cotton layer. The third interlayer includes several second hollow fiber tubes and several second hollow fiber balls, and the several second hollow fiber tubes are quilted with the several second hollow fiber balls respectively.
[0006] Preferably, a first interlayer cavity is provided between the first pearl cotton layer and the first interlayer, and the first interlayer is laterally located inside the first interlayer cavity. A first adhesive layer is laterally provided between the first pearl cotton layer and the second pearl cotton layer, and the upper and lower surfaces of the first adhesive layer are respectively bonded to the first pearl cotton layer and the second pearl cotton layer.
[0007] Preferably, a second interlayer cavity is provided between the second pearl cotton layer and the second interlayer, and the second interlayer is laterally located inside the second interlayer cavity. A second adhesive layer is laterally provided between the second pearl cotton layer and the third pearl cotton layer, and the upper and lower surfaces of the second adhesive layer are respectively bonded to the second pearl cotton layer and the third pearl cotton layer.
[0008] Preferably, a third interlayer cavity is provided between the third pearl cotton layer and the third interlayer, and the third interlayer is laterally located inside the third interlayer cavity.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Several first hollow fiber balls and several second hollow fiber balls are processed into spherical shapes from non-woven fabric using a special ball-forming technology. The spheres are hollow inside and have a large air storage space, resulting in strong buoyancy. Several first hollow fiber tubes and several second hollow fiber tubes are cylindrical tubes made of PTFE membrane and fabric composite. The tubes are hollow inside and have a large air storage space and are filled with air, resulting in strong buoyancy. Furthermore, through the combination and cooperation between the first, second, and third interlayers, the pearl cotton body formed by the mutual bonding of the first pearl cotton layer, second pearl cotton layer, third pearl cotton layer, and sanded cotton layer has strong buoyancy and lightness. The sanded cotton layer is formed by siliconizing polyester fibers, which enables the pearl cotton body to maintain excellent mechanical strength and stability in high-temperature environments.
[0010] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 A schematic diagram of a type of pearl cotton structure with strong buoyancy;
[0013] Figure 2 This is a schematic diagram of the first interlayer structure;
[0014] Figure 3 This is a schematic diagram of the second interlayer structure;
[0015] Figure 4 This is a schematic diagram of the third interlayer structure.
[0016] The diagram shows: 1. First pearl cotton layer, 2. First interlayer, 3. First adhesive layer, 4. Sanded cotton layer, 5. Second pearl cotton layer, 6. Second interlayer, 7. Second adhesive layer, 8. Third pearl cotton layer, 9. Third interlayer, 10. First hollow fiber ball, 11. First hollow fiber tube, 12. Cotton wadding, 13. Second hollow fiber tube, 14. Second hollow fiber ball. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-4In this embodiment of the invention, a highly buoyant pearl cotton structure includes a first pearl cotton layer 1, a second pearl cotton layer 5, a third pearl cotton layer 8, and a sanded cotton layer 4. The first pearl cotton layer 1 is horizontally attached to the surface of the second pearl cotton layer 5, the second pearl cotton layer 5 is horizontally attached to the surface of the third pearl cotton layer 8, and the third pearl cotton layer 8 is horizontally attached to the surface of the sanded cotton layer 4. The pearl cotton body is formed by the mutual adhesion of the first pearl cotton layer 1, the second pearl cotton layer 5, the third pearl cotton layer 8, and the sanded cotton layer 4. Layer 1 has a first interlayer 2, which is laterally located inside the first pearl cotton layer 1 and is formed by quilting several first hollow fiber balls 10. The second pearl cotton layer 5 has a second interlayer 6, which is laterally located inside the second pearl cotton layer 5 and is formed by quilting several first hollow fiber tubes 11, each filled with cotton wadding 12. The third pearl cotton layer 8 has a third interlayer 9, which is laterally located inside the third pearl cotton layer 8. Internally, the third interlayer 9 includes several second hollow fiber tubes 13 and several second hollow fiber balls 14, with the several second hollow fiber tubes 13 and several second hollow fiber balls 14 respectively quilted together. Because the several first hollow fiber balls 10 and several second hollow fiber balls 14 are processed into spherical shapes from non-woven fabric using a special spherical forming technology, the spheres are hollow inside and have a large air storage space, exhibiting strong buoyancy. Furthermore, the several first hollow fiber tubes 11 and several second hollow fiber tubes 13 are composites of PTFE membrane and fabric. The tube is hollow inside and has a large air storage space. It is very light and buoyant. The combination of the first interlayer 2, the second interlayer 6 and the third interlayer 9 makes the pearl cotton body, which is formed by the mutual bonding of the first pearl cotton layer 1, the second pearl cotton layer 5, the third pearl cotton layer 8 and the sanded cotton layer 4, have strong buoyancy. The sanded cotton layer 4 is formed by siliconizing polyester fibers, which allows the pearl cotton body to maintain excellent mechanical strength and stability in high temperature environments.
[0019] A first interlayer cavity (not shown in the figure) is provided between the first pearl cotton layer 1 and the first interlayer 2, and the first interlayer 2 is laterally located inside the first interlayer cavity. A first adhesive layer 3 is laterally provided between the first pearl cotton layer 1 and the second pearl cotton layer 5, and the upper and lower surfaces of the first adhesive layer 3 are respectively bonded to the first pearl cotton layer 1 and the second pearl cotton layer 5, thereby making the first pearl cotton layer 1 and the second pearl cotton layer 5 adhere to each other through the first adhesive layer 3.
[0020] A second interlayer cavity (not shown in the figure) is provided between the second pearl cotton layer 5 and the second interlayer 6, and the second interlayer 6 is laterally located inside the second interlayer cavity. A second adhesive layer 7 is laterally provided between the second pearl cotton layer 5 and the third pearl cotton layer 8, and the upper and lower surfaces of the second adhesive layer 7 are respectively bonded to the second pearl cotton layer 5 and the third pearl cotton layer 8, thereby making the second pearl cotton layer 5 and the third pearl cotton layer 8 adhere to each other through the second adhesive layer 7.
[0021] A third interlayer cavity (not shown in the figure) is provided between the third pearl cotton layer 8 and the third interlayer 9, and the third interlayer 9 is laterally located inside the third interlayer cavity.
[0022] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A highly buoyant pearl cotton structure, characterized in that, The system comprises a first pearl cotton layer, a second pearl cotton layer, a third pearl cotton layer, and a sanded cotton layer. The first pearl cotton layer is horizontally attached to the surface of the second pearl cotton layer, the second pearl cotton layer is horizontally attached to the surface of the third pearl cotton layer, and the third pearl cotton layer is horizontally attached to the surface of the sanded cotton layer. The pearl cotton body is formed by the mutual bonding of the first pearl cotton layer, the second pearl cotton layer, the third pearl cotton layer, and the sanded cotton layer. The first pearl cotton layer has a first interlayer, which is formed by quilting several first hollow fiber balls. The second pearl cotton layer has a second interlayer, which is formed by quilting several first hollow fiber tubes, and each of the several first hollow fiber tubes is filled with cotton wool. The third pearl cotton layer has a third interlayer, which includes several second hollow fiber tubes and several second hollow fiber balls, and the several second hollow fiber tubes are quilted with the several second hollow fiber balls respectively.
2. The pearl cotton structure with strong buoyancy according to claim 1, characterized in that, A first interlayer cavity is provided between the first pearl cotton layer and the first interlayer, and the first interlayer is laterally located inside the first interlayer cavity. A first adhesive layer is laterally provided between the first pearl cotton layer and the second pearl cotton layer, and the upper and lower surfaces of the first adhesive layer are respectively bonded to the first pearl cotton layer and the second pearl cotton layer.
3. The pearl cotton structure with strong buoyancy according to claim 1, characterized in that, A second interlayer cavity is provided between the second pearl cotton layer and the second interlayer, and the second interlayer is laterally located inside the second interlayer cavity. A second adhesive layer is laterally provided between the second pearl cotton layer and the third pearl cotton layer, and the upper and lower surfaces of the second adhesive layer are respectively bonded to the second pearl cotton layer and the third pearl cotton layer.
4. The pearl cotton structure with strong buoyancy according to claim 1, characterized in that, A third interlayer cavity is provided between the third pearl cotton layer and the third interlayer, and the third interlayer is laterally located inside the third interlayer cavity.