Ball cotton fiber sheet with multi-layer structure

Abstract

The utility model relates to a multi-layer structure fiber product, in particular to a multi-layer structure ball cotton flocculus which sequentially comprises an upper supporting layer, an upper reinforcing layer, a ball cotton layer, a lower reinforcing layer and a lower supporting layer from top to bottom, and the upper supporting layer and the lower supporting layer are short fibers made of the same material. The ball cotton layer is composed of uniformly dispersed fiber balls with different ball diameters and inter-ball fibers filled among the fiber balls, the upper reinforcing layer and the lower reinforcing layer are composed of disorderly dispersed low-melting-point fibers, short fiber extension and inter-ball fiber extension, and the low-melting-point fibers are fused to form welding points. Any two or three of the low-melting-point fibers, the short fibers and the inter-ball fibers form entanglement clusters. According to the utility model, the ball cotton which is easy to deform and agglomerate is fixed between the two supporting layers by adopting the design of a multi-layer structure, and the ball cotton and the supporting layers are further reinforced by using the reinforcing layers, so that the external force resistance of the ball cotton is improved, the ball cotton is not easy to collapse or agglomerate after being stressed, and the characteristics of light weight and fluffiness of the ball cotton are also maintained.

Description

Technical Field

[0001] This utility model relates to the field of functional fiber filling, and in particular to a multi-layer structured ball cotton wadding sheet. Background Technology

[0002] Ball-shaped filling is a fibrous aggregate with a spherical structure, formed by twisting short fibers using a ball-forming machine. This aggregate can be used as a filling material in textiles such as clothing, home textiles, and toys. As a filling material, it offers advantages such as warmth, lightness, and fluffiness. However, due to the independent nature of the spherical structure within the ball-shaped filling, it is prone to displacement under stress. Prolonged stress can cause the ball-shaped filling in products to collapse or clump together, and this structural deformation can affect the product's normal use. Summary of the Invention

[0003] To address the problem that existing filled cotton products often collapse or clump together after prolonged use, leading to product deformation, this utility model provides a multi-layered cotton wadding sheet, comprising supporting fiber layers on both sides, a middle insulating cotton layer, and a reinforcing layer between the supporting fiber layers and the insulating cotton layer.

[0004] The multi-layered ball-cotton wadding of this utility model consists of, from top to bottom, an upper support layer, an upper reinforcing layer, a ball-cotton layer, a lower reinforcing layer, and a lower support layer. The upper and lower support layers are made of short fibers of the same material. The ball-cotton layer is composed of uniformly dispersed fiber balls of different diameters and inter-ball fibers filling the spaces between the fiber balls. The upper and lower reinforcing layers are composed of disordered low-melting-point fibers, extensions of short fibers, and extensions of inter-ball fibers. After the low-melting-point fibers melt, they form welding points. Any two or three of the low-melting-point fibers, short fibers, and inter-ball fibers form entangled clusters.

[0005] In this utility model, the height ratio of the upper support layer, the upper reinforcement layer, the cotton ball layer, the lower reinforcement layer and the lower support layer is (0.2~1.2):(0.05~0.1):1:(0.05~0.1):(0.2~1.2), wherein the diameter of the fiber ball 2-1 is 0.1~1.5cm.

[0006] Specifically, the short fibers supporting the fiber layer are selected from polyester fiber, polyamide fiber, polyethylene fiber, or polypropylene fiber; the fiber balls and inter-ball fibers of the ball cotton layer are made of the same material, namely polyester, polyamide, polyethylene, or polypropylene. Both the fiber balls and inter-ball fibers contain PCM material or heat storage material. The addition of PCM material gives the multi-layer structure ball cotton wadding of this utility model a cooling characteristic, and the addition of heat storage material gives the multi-layer structure ball cotton wadding of this utility model a heat absorption and heat storage characteristic; the low melting point fiber material is polyester fiber with a melting point ≤130℃.

[0007] Furthermore, in order to increase the overall strength of the structure, a certain proportion of low melting point fiber 3-3 can be added to both the supporting fiber layer and the ball cotton layer. The amount added to the upper supporting layer 1-1 and the lower supporting layer 1-2 is 2-30 wt%, and the amount added to the ball cotton layer 2-0 is 2-15 wt%.

[0008] This invention employs a multi-layered structure to fix easily deformable and clumped cotton balls between two support layers. A reinforcing layer further strengthens the cotton balls and support layers, enhancing their resistance to external forces and preventing them from collapsing or clumping under stress. Simultaneously, it maintains the lightweight and fluffy characteristics of the cotton balls themselves. The low-melting-point fibers in the reinforcing layer fill the fiber gaps on the surfaces of the support layers and the cotton balls. The intertwining of these fibers further increases the bonding force between the layers, preventing the multi-layered cotton ball wadding from separating after prolonged use. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the multi-layered ball cotton wadding sheet of this utility model;

[0010] The numbers are as follows: 1-1, upper support layer; 1-2, lower support layer; 2-0, cotton ball layer; 2-1, fiber ball; 2-2, inter-ball fiber; 3-1, upper reinforcing layer; 3-2, lower reinforcing layer; 3-3, low melting point fiber; 3-4, welding point; 3-5, entanglement cluster. Detailed Implementation

[0011] The present invention will be described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0012] Example 1

[0013] A multi-layered structured ball-shaped cotton wadding, such as Figure 1 As shown, the multi-layered ball-cotton wadding consists of, from top to bottom, an upper support layer 1-1, an upper reinforcing layer 3-1, a ball-cotton layer 2-0, a lower reinforcing layer 3-2, and a lower support layer 1-2. The upper support layer 1-1 and lower support layer 1-2 are made of polyester staple fibers. The ball-cotton layer 2-0 is composed of uniformly dispersed fiber balls 2-1 and inter-ball fibers 2-2 filling the spaces between the fiber balls 2-1. Both the fiber balls 2-1 and the inter-ball fibers 2-2 are polyamides with added PCM material. The largest ball of the fiber ball 2-1... The diameter is 0.1cm; the upper reinforcing layer 3-1 and the lower reinforcing layer 3-2 are composed of disordered and dispersed low melting point fibers 3-3, extensions of polyester short fibers of upper support layer 1-1 and lower support layer 1-2 and extensions of inter-sphere fibers 2-2. After the low melting point fibers 3-3 melt, they form welding points 3-4. Any two or three of the low melting point fibers 3-3, polyester short fibers and inter-sphere fibers 2-2 form entangled clusters 3-5. The low melting point fibers 3-3 are polyester fibers with a melting point not higher than 130℃.

[0014] The thicknesses of the upper support layer 1-1, the upper reinforcement layer 3-1, the cotton ball layer 2-0, the lower reinforcement layer 3-2, and the lower support layer 1-2 are 0.5cm, 0.05cm, 1cm, 0.05cm, and 0.5cm, respectively.

[0015] Example 2

[0016] A multi-layered structured ball-shaped cotton wadding, such as Figure 1 As shown, the multi-layered ball cotton wadding consists of, from top to bottom, an upper support layer 1-1, an upper reinforcing layer 3-1, a ball cotton layer 2-0, a lower reinforcing layer 3-2, and a lower support layer 1-2. The upper support layer 1-1 and the lower support layer 1-2 are composed of polyethylene short fibers and low-melting-point fibers 3-3. The ball cotton layer 2-0 is composed of uniformly dispersed fiber balls 2-1 and inter-ball fibers 2-2 and low-melting-point fibers 3-3 filling the spaces between the fiber balls 2-1. The upper reinforcing layer 3-1 and the lower reinforcing layer 3-2 are composed of disordered low-melting-point fibers 3-3, extensions of polyethylene short fibers from the upper support layer 1-1 and the lower support layer 1-2, and extensions of inter-ball fibers 2-2. After the low-melting-point fibers 3-3 melt, they form welding points 3-4. Any two or three of the low-melting-point fibers 3-3, polyethylene short fibers, and inter-ball fibers 2-2 form entangled clusters 3-5. The low-melting-point fibers 3-3 are polyester fibers with a melting point not higher than 130°C.

[0017] The thicknesses of the upper support layer 1-1, the upper reinforcement layer 3-1, the cotton ball layer 2-0, the lower reinforcement layer 3-2, and the lower support layer 1-2 are 3cm, 0.3cm, 5cm, 0.3cm, and 2cm, respectively.

[0018] As a preferred embodiment, the fiber ball 2-1 has a maximum diameter of 1.5 cm and is a multi-layered fiber assembly. From the inside out, it consists of a support core, a thermal insulation layer, and a soft layer. The support core is made of coarse denier polyester fiber with a fineness of 2.5–15 D and a length of 25–51 mm. The thermal insulation layer is made of thermal insulation polyethylene fiber with added graphene powder, with a fineness of 2.5–7 D and a length of 25–51 mm. The soft layer is made of fine denier PA6 fiber with a fineness of 0.3–2.5 D and a length of 25–51 mm. The weight percentage of the support core is 10%–50%, the weight percentage of the thermal insulation layer is 10%–50%, and the weight percentage of the soft layer is 5%–40%.

[0019] In this embodiment, low-melting-point polyester fibers are used to weld the layers. The preparation method is as follows: First, short fibers and low-melting-point fibers of the support layer are mixed at a mass ratio of 4:1. After the cotton balls are rolled into balls, they are mixed with low-melting-point fibers at a mass ratio of 9:1. The single layers are stacked continuously according to their thickness. After applying a certain pressure through the pressure roller, the low-melting-point polyester fibers are melted in the oven and then cooled and shaped to obtain the final product.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layered structure of a ball of cotton wadding characterized in that, The multi-layer structure ball cotton piece is sequentially provided with an upper support layer 1-1, an upper reinforcing layer 3-1, a ball cotton layer 2-0, a lower reinforcing layer 3-2 and a lower support layer 1-2 from top to bottom; The upper support layer 1-1 and the lower support layer 1-2 are short fibers of the same material; The ball cotton layer 2-0 is composed of uniformly dispersed fiber balls 2-1 of different diameters and inter-fiber balls 2-2 filled between the fiber balls 2-1; The upper reinforcing layer 3-1 and the lower reinforcing layer 3-2 are composed of low-melting-point fibers 3-3, extensions of the short fibers and extensions of the inter-fiber balls 2-2, the low-melting-point fibers 3-3 form welding points 3-4 after melting, and any two or three of the low-melting-point fibers 3-3, the short fibers and the inter-fiber balls 2-2 form entangled clusters 3-5.

2. The multi-layered structure of the batt of claim 1, wherein, The height ratio of the upper support layer, the upper reinforcing layer, the ball cotton layer, the lower reinforcing layer and the lower support layer is (0.2-1.2):(0.05-0.1):1:(0.05-0.1):(0.2-1.2).

3. The multi-layered structure of the ball cotton wool piece according to claim 1, characterized in that, The short fibers are selected from one of polyester fibers, polyamide fibers, polyethylene fibers or polypropylene fibers.

4. The multi-layered structure of the batt of claim 1, wherein, The fiber balls 2-1 and the inter-fiber balls 2-2 are of the same material, which is one of polyester, polyamide, polyethylene or polypropylene, and the fibers of the fiber balls 2-1 and the inter-fiber balls 2-2 both contain PCM materials or heat storage materials.

5. The multi-layered structure of the batt of claim 1, wherein, The diameter of the fiber balls 2-1 is 0.1-1.5 cm.

6. The multi-layered structure of the batt of claim 1, wherein, The material of the low-melting-point fibers is polyester fiber, and the melting point is ≤130℃.

7. The multi-layered structure of the batt of claim 1, wherein, 2-30wt% of the low-melting-point fibers 3-3 are added to the upper support layer 1-1 and the lower support layer 1-2.

8. The multi-layered structure of the batt of claim 1, wherein, 2-15wt% of the low-melting-point fibers 3-3 are added to the ball cotton layer 2-0.

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