Elastic ES composite short fiber

Abstract

The utility model discloses an elastic ES composite short fiber which comprises a fiber inner core layer, at least one elastic fiber layer, a waterproof layer and a protective layer, the elastic fiber layer wraps the outer side face of an inner core, the elastic fiber layer comprises a plurality of elastic fibers, and the waterproof layer is arranged on the outer side face of the inner core. The elastic fibers are spirally distributed relative to the fiber inner core layer, the multiple elastic fibers are distributed in an annular array mode, the waterproof layer wraps the outer side faces of the elastic fibers, the protective layer wraps the outer side face of the waterproof layer, the elastic fiber layer comprises a first elastic layer and a second elastic layer, and the first elastic layer and the second elastic layer are arranged in a staggered mode. The second elastic layer wraps the outer side face of the first elastic layer, the first elastic layer and the second elastic layer are both composed of a plurality of elastic fibers, and the spiral direction of the first elastic layer and the spiral direction of the second elastic layer are opposite.

Description

Technical Field

[0001] The utility model relates to the field of ES composite short fibers, in particular to an elastic ES composite short fiber. Background Art

[0002] ES in ES fiber is the abbreviation of the English "ETHYLENE-PROPYLENE SIDE BY SIDE". After heat treatment, the fibers are joined to each other to form a non-woven fabric molding body without an adhesive. At present, the elastic layers in the elastic ES composite short fibers on the market all adopt a linear long strip structure. The stretching distance of the linear elastic layer is related to the elastic fiber material, and the stretching distance is limited. Summary of the Utility Model

[0003] Aiming at the limited stretching distance of the short fiber with a linear long strip elastic layer in the prior art, the utility model provides an elastic ES composite short fiber.

[0004] To solve the above technical problems, the utility model is solved by the following technical solutions: an elastic ES composite short fiber, including a fiber inner core layer, an elastic fiber layer, a waterproof layer and a protective layer. The elastic fiber layer is coated on the outer side of the inner core. The elastic fiber layer is provided with at least one layer. The elastic fiber layer includes a plurality of elastic fibers. The elastic fibers are spirally distributed relative to the fiber inner core layer. A plurality of the elastic fibers are arranged in a circular array. The waterproof layer is coated on the outer side of the elastic fibers. The protective layer is coated on the outer side of the waterproof layer.

[0005] Preferably, the elastic fiber layer includes a first elastic layer and a second elastic layer. The second elastic layer is coated on the outer side of the first elastic layer. Both the first elastic layer and the second elastic layer are composed of a plurality of elastic fibers. The spiral directions of the first elastic layer and the second elastic layer are opposite.

[0006] Preferably, a plurality of the elastic fibers include a first elastic fiber and a second elastic fiber. The first elastic fiber adopts a polyurethane elastic fiber. The second elastic fiber adopts a polyether ester elastic fiber.

[0007] Preferably, the elastic fibers of the first elastic layer all adopt the first elastic fiber or the second elastic fiber. The elastic fibers of the second elastic layer all adopt the second elastic fiber or the first elastic fiber.

[0008] Preferably, a plurality of the elastic fibers of the first elastic layer include a first elastic fiber and a second elastic fiber. The first elastic fiber and the second elastic fiber are alternately arranged. A plurality of the elastic fibers of the second elastic layer include a first elastic fiber and a second elastic fiber. The second elastic fiber and the second elastic fiber are alternately arranged.

[0009] Preferably, the spiral angle of the elastic fiber is 5 degrees to 45 degrees.

[0010] Preferably, the fiber inner core layer is an ES fiber.

[0011] Preferably, the waterproof layer is a polytetrafluoroethylene coating.

[0012] Due to the adoption of the above technical solutions, the utility model has remarkable technical effects: compared with the traditional strip-shaped elastic fiber, the spiral elastic fiber has a longer stretching distance and better resilience effect. Through multiple layers of elastic fiber layers, the elastic service life of the composite short fiber can be effectively increased, and the adjacent double-layer spiral elastic fibers help to reduce mutual interference. Description of the Drawings

[0013] Figure 1 is a front sectional structural view of an elastic ES composite short fiber in Embodiment 1;

[0014] Figure 2 is a three-dimensional sectional view of an elastic ES composite short fiber in Embodiment 1;

[0015] Figure 3 is a front sectional structural view of an elastic ES composite short fiber in Embodiment 2;

[0016] Figure 4 is a front sectional structural view of an elastic ES composite short fiber in Embodiment 3.

[0017] The names of the parts referred to by the above numerical labels in the drawings are as follows: 1, fiber inner core layer; 2, elastic fiber layer; 21, elastic layer one; 22, elastic layer two; 23, elastic fiber one; 24, elastic fiber two; 3, waterproof layer; 4, protective layer. Detailed Description of the Embodiments

[0018] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0019] Embodiment 1:

[0020] An elastic ES composite short fiber. First, refer to Figure 1 , which includes a fiber inner core layer 1, an elastic fiber layer 2, a waterproof layer 3, and a protective layer 4. The elastic fiber layer 2 is coated on the outer side of the inner core. The elastic fiber layer 2 is provided with at least one layer. In this embodiment, the elastic fiber layer 2 is provided with two layers including an elastic layer one 21 and an elastic layer two 22, but it is not limited to two layers and can also be one layer or more than two layers. The elastic layers are coated layer by layer. In this embodiment, the elastic layer two 22 is coated on the outer side of the elastic layer one 21. The fiber inner core layer 1 is a whole ES fiber. Both the elastic layer one 21 and the elastic layer two 22 are composed of several elastic fibers. Combining Figure 2, the elastic fibers of the first elastic layer 21 are spirally distributed on the outer side surface of the fiber inner core. A plurality of elastic fiber layers 2 of the first elastic layer 21 are distributed in a circular array to cover the fiber inner core. The elastic fibers of the second elastic layer 22 are also spirally distributed on the outer side surface of the first elastic layer. A plurality of elastic fibers of the second elastic layer 22 are distributed in a circular array to cover the first elastic layer 21. In this embodiment, the spiral directions of the elastic fibers of the first elastic layer 21 and the second elastic layer 22 are set in opposite directions. The elastic fibers include the first elastic fiber 23 and the second elastic fiber 24. The first elastic fiber 23 is made of polyurethane elastic fiber, and the second elastic fiber 24 is made of polyether ester elastic fiber. In this embodiment, a plurality of elastic fibers of the first elastic layer 21 all adopt the first elastic fiber 23, and a plurality of elastic fibers of the second elastic layer 22 all adopt the second elastic fiber 24.

[0021] See Figure 1 and Figure 2 , the elastic fibers of both the first elastic layer and the second elastic layer 22 are spirally distributed. When the composite short fiber is not stretched, the spiral angle of this spiral distribution is 5 degrees to 45 degrees. The spiral elastic angle and the number of elastic fibers can be changed according to the required elasticity. The waterproof layer 3 covers the outer side surface of the second elastic layer 22. The waterproof layer 3 adopts a polytetrafluoroethylene coating. The protective layer 4 covers the outer side surface of the waterproof layer 3. The protective layer is a polyurethane protective coating

[0022] Embodiment Two:

[0023] The difference between this embodiment and Embodiment One lies in the adoption of the elastic fiber material layer. Combining Figure 3 , in this embodiment, a plurality of elastic fibers of the first elastic layer 21 adopt the second elastic fiber 24, and a plurality of elastic fibers of the second elastic layer 22 adopt the first elastic fiber 23.

[0024] Embodiment Three:

[0025] The difference between this embodiment and Embodiment One lies in the different elastic fibers adopted. Combining Figure 4 , in this embodiment, both the first elastic layer 21 and the second elastic layer 22 simultaneously include the first elastic fiber 23 and the second elastic fiber 24. The first elastic fiber 23 and the second elastic fiber 24 of the first elastic layer 21 are arranged alternately, and the first elastic fiber 23 and the second elastic fiber 24 of the second elastic layer 22 are arranged alternately.

Claims

1. An elastic ES composite short fiber, characterized in that, It includes a fiber inner core layer (1), an elastic fiber layer (2), a waterproof layer (3) and a protective layer (4). The elastic fiber layer (2) is coated on the outer side of the inner core. The elastic fiber layer (2) has at least one layer. The elastic fiber layer (2) includes a number of elastic fibers. The elastic fibers are arranged in a spiral distribution relative to the fiber inner core layer (1). A number of the elastic fibers are arranged in a circular array. The waterproof layer (3) is coated on the outer side of the elastic fibers. The protective layer (4) is coated on the outer side of the waterproof layer (3).

2. The elastic ES composite staple fiber according to claim 1, characterized in that, The elastic fiber layer (2) includes an elastic layer one (21) and an elastic layer two (22). The elastic layer two (22) is coated on the outer side of the elastic layer one (21). Both the elastic layer one (21) and the elastic layer two (22) are composed of a number of elastic fibers. The spiral directions of the elastic layer one (21) and the elastic layer two (22) are opposite to each other.

3. The elastic ES composite staple fiber according to claim 2, characterized in that, A number of the elastic fibers include an elastic fiber one (23) and an elastic fiber two (24). The elastic fiber one (23) is made of polyurethane elastic fiber. The elastic fiber two (24) is made of polyether ester elastic fiber.

4. An elastic ES composite staple fiber according to claim 3, wherein, The elastic fibers of the elastic layer one (21) are all made of the elastic fiber one (23) or the elastic fiber two (24). The elastic fibers of the elastic layer two (22) are all made of the elastic fiber two (24) or the elastic fiber one (23).

5. An elastic ES composite staple fiber according to claim 3, characterized in that, A number of the elastic fibers of the elastic layer one (21) include the elastic fiber one (23) and the elastic fiber two (24). The elastic fiber one (23) and the elastic fiber two (24) are arranged alternately. A number of the elastic fibers of the elastic layer two (22) include the elastic fiber one (23) and the elastic fiber two (24). The elastic fiber two (24) and the elastic fiber two (24) are arranged alternately.

6. The elastic ES composite staple fiber according to claim 1, wherein, The spiral angle of the elastic fibers is 5 degrees to 45 degrees.

7. An elastic ES composite staple fiber according to claim 1, characterized in that, The fiber inner core layer (1) is ES fiber.

8. An elastic ES composite staple fiber according to claim 1, characterized in that, The waterproof layer (3) is a polytetrafluoroethylene coating.

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