Needle-punched rebound cotton and processing technology thereof

Abstract

The present invention belongs to the field of textile technology, and in particular relates to a needle-punched rebound cotton and a processing technology thereof. The needle-punched rebound cotton comprises a first breathable and moisture-absorbing layer composed of CoolPlus fibers, a rebound layer composed of hollow fibers, and a second breathable and moisture-absorbing layer composed of CoolPlus fibers. The first breathable and moisture-absorbing layer, the rebound layer, and the second breathable and moisture-absorbing layer are stacked in sequence from top to bottom and are connected and fixed in pairs by an adhesive. The first breathable and moisture-absorbing layer and the second breathable and moisture-absorbing layer account for 60%-90% of the total mass of the rebound cotton, the rebound layer accounts for 10%-40% of the total mass of the rebound cotton, and the adhesive accounts for 10%-30% of the total mass of the rebound cotton. The adhesive is composed of 1%-10% by mass of polyacrylate and 90%-99% by mass of water. Compared with the prior art, the rebound cotton of the present invention has a sandwich network structure of outer layer breathable and moisture-absorbing fibers, middle layer hollow fibers, and outer layer breathable and moisture-absorbing fibers. The hollow fibers provide a three-dimensional support structure, which greatly improves the rebound elasticity.

Description

Technical Field

[0001] The present invention relates to the field of textile technology, and more particularly to a needle-punched rebound cotton and a processing technology thereof. Background Art

[0002] Needle-punched cotton is a product made by directly punching fibers into flakes without spinning. Needle-punched cotton has a wide range of uses. In addition to clothing, it is also used as a base material for wall coverings used in interior decoration.

[0003] Needle-punched cotton is usually used as the filling material in the interlayer of clothing and accessories. It can be compounded with jacquard fabrics, yarn-dyed fabrics, silk and other fabrics that have flame retardancy, heat insulation, sound absorption and sound insulation, antibacterial, mildew proof, stain proof, dust proof, waterproof, oil proof and antistatic properties and functions, expanding needle-punched cotton to a wider range of production and application fields.

[0004] Needle-punched cotton made from natural cotton, cashmere, wool, camel hair, hemp fiber, bamboo fiber, corn fiber, soybean fiber, etc. is used as filling material or base material. The product is soft, fluffy, and breathable, which is closer to people's lives. It can be used as filling material for clothing, accessories, cushions, and household items, as well as for interior wall decoration.

[0005] The cotton flakes have good thermal insulation properties, but the cotton becomes heavier after absorbing moisture and is easy to become hardened, which leads to a decrease in fluffiness and warmth.

[0006] In order to improve the fluffiness and warmth retention of cotton wool sheets, synthetic fibers or wool fibers with good elasticity are generally added. Although the addition of relevant fibers can improve the resilience of cotton wool sheets to a certain extent, it will also cause the air permeability of cotton wool sheets to deteriorate. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a needle-punched rebound cotton and a processing technology thereof that solves the above-mentioned technical problems.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A needle-punched rebound cotton, characterized by comprising

[0010] The first breathable and moisture-absorbing layer is made of coolplus fiber.

[0011] The rebound layer is composed of hollow fibers.

[0012] The second breathable and moisture-absorbing layer is made of coolplus fiber;

[0013] The first breathable and moisture-absorbing layer, the resilience layer, and the second breathable and moisture-absorbing layer are stacked in sequence from top to bottom and are connected and fixed with adhesives.

[0014] The first breathable and moisture-absorbing layer and the second breathable and moisture-absorbing layer account for 60%-90% of the total mass of the rebound cotton, the rebound layer accounts for 10%-40% of the total mass of the rebound cotton, and the adhesive accounts for 10%-30% of the total mass of the rebound cotton.

[0015] Furthermore, the first breathable and moisture-absorbent layer and the second breathable and moisture-absorbent layer are both composed of a plurality of first flakes and a plurality of second flakes, which are stacked alternately with each other, and the first flakes and the second flakes both have a plurality of concave depressions, and the depressions on the first flakes and the second flakes are staggered with each other.

[0016] Furthermore, the resilience layer is composed of a plurality of third flakes and a plurality of fourth flakes stacked together, the plurality of third flakes and the plurality of fourth flakes are arranged in a staggered manner, the third flakes are provided with a plurality of transverse ridges, and the fourth flakes are provided with longitudinal ridges.

[0017] Furthermore, the first flakes and the second flakes are connected by needle punching, and the third flakes and the fourth flakes are bonded by an adhesive.

[0018] Furthermore, the binder is composed of 1-10% by mass of polyacrylate and 90-99% by mass of water.

[0019] The processing technology of needle-punched rebound cotton includes the following steps:

[0020] S1. Prepare coolplus fiber and hollow fiber raw materials;

[0021] S2, feeding coolplus fiber and hollow fiber raw materials into the opening machine for opening;

[0022] S3, feeding the opened coolplus fiber and hollow fiber raw materials into the carding machine for carding treatment;

[0023] S4, combing the coolplus fiber and hollow fiber raw materials to form a mesh flake, and pressing the concave parts and convex strips through the forming roller;

[0024] S5. Stack the CoolPlus fiber mesh sheets so that the concave portions on adjacent sheets are staggered, and then connect them by needling with a needle punching device to form a breathable and moisture-absorbing layer; stack the hollow fiber mesh sheets so that the ridges on adjacent sheets are arranged in a crisscross pattern, and connect the sheets with an adhesive to form a resilient layer;

[0025] S6. A rebound layer is provided between the two breathable and moisture-absorbing layers, and the two layers are bonded together by an adhesive to form a rebound cotton;

[0026] S7. Cut and roll the rebound cotton, and finally pack it for storage.

[0027] Furthermore, in step S4, there are two groups of forming rollers, one group of forming rollers has two roller bodies with corresponding recessed holes and protrusions, and the other group of forming rollers has two roller bodies with corresponding prismatic convex rings and prismatic grooves.

[0028] Furthermore, in step S5, when the coolplus fiber mesh flakes are laid and stacked, the continuous mesh flakes are stacked in an S shape to form a breathable and moisture-absorbing layer.

[0029] Furthermore, in step S6, the breathable and moisture-absorbing layer and the resilient layer are bonded together by using an atomized adhesive, and then heated, dried, and shaped.

[0030] By adopting the above technical solution, the beneficial effects of the present invention are:

[0031] 1. The sandwich network structure of outer layer breathable and moisture-absorbing fiber - middle layer hollow fiber - outer layer breathable and moisture-absorbing fiber. The hollow fiber provides a three-dimensional support structure, which greatly improves the resilience;

[0032] 2. Coolplus fiber is a new type of polyester fiber with excellent moisture absorption and perspiration functions. Coolplus fiber is a combination of PET and special polymers. Its fiber cross-section is a "cross". In addition to the four "cross"-shaped grooves that achieve moisture transmission, a special polymer is added to the fiber, utilizing the difference in solubility of the various components of the material to give the fiber countless fine grooves. The capillaries generated by the fine grooves of Coolplus fiber, through the capillary phenomenon generated by these fine groove tips, instantly discharge moisture and sweat discharged from the skin surface through wicking, diffusion, and transmission, thereby keeping the skin dry and cool. Therefore, the breathable and moisture-absorbing layer formed by Coolplus fiber has a soft and comfortable feel and has better moisture absorption and breathability, making the rebound cotton have a better sense of comfort.

[0033] 3. Hollow fiber, which has a tubular cavity in the fiber axis. Its high hollow structure reduces the weight of the fiber by 20% and can contain a large amount of static air, making the fabric light and at the same time, its warmth retention performance is 65% higher than that of ordinary homogeneous fabrics; therefore, the rebound layer composed of hollow fibers has a good rebound effect, making the rebound cotton have a relatively long-lasting high elasticity. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the cross-sectional structure of the rebound surface.

[0035] Figure 2 This is a schematic diagram of the structure in which the first flake and the second flake are superimposed.

[0036] Figure 3 It is a schematic diagram of the cross-sectional structure of the breathable and moisture-absorbing layer.

[0037] Figure 4 Schematic diagram of the cross-sectional structure of the rebound layer.

[0038] Figure 5 Schematic diagram of the forming roller structure for forming the recessed portion.

[0039] Figure 6 Schematic diagram of the forming roller structure for convex strip forming. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] The needle-punched rebound cotton includes a first breathable and moisture-absorbing layer 1 composed of coolplus fiber, a rebound layer 2 composed of hollow fiber, and a second breathable and moisture-absorbing layer 3 composed of coolplus fiber. The first breathable and moisture-absorbing layer 1, the rebound layer 2, and the second breathable and moisture-absorbing layer 3 are stacked in sequence from top to bottom and are connected and fixed by an adhesive 4 between each other; the first breathable and moisture-absorbing layer 1 and the second breathable and moisture-absorbing layer 3 account for 60%-90% of the total mass of the rebound cotton, the rebound layer 2 accounts for 10%-40% of the total mass of the rebound cotton, and the adhesive accounts for 10%-30% of the total mass of the rebound cotton; the adhesive 4 is composed of 1-10% by mass of polyacrylate and 90-99% by mass of water;

[0043] The first breathable and moisture-absorbing layer 1 and the second breathable and moisture-absorbing layer 3 have the same mass, wherein the material mass ratio of coolplus fiber: hollow fiber: binder = 6:3:1 is the best;

[0044] The rebound cotton adopts a three-layer sandwich structure - the two outer layers are breathable and moisture-absorbent, and the middle rebound layer is rebound. While ensuring that the rebound cotton has good moisture absorption and breathability, it also has a better rebound effect; and the adhesive formed by polyacrylate and water can more effectively bond the three-layer structure while not easily causing any impact on the human body.

[0045] The first breathable and moisture-absorbent layer and the second breathable and moisture-absorbent layer are both composed of a plurality of first flakes 11 and a plurality of second flakes 22 (the first flakes 11 and the second flakes 22 are composed of long strips of flakes folded in an S-shape), the plurality of first flakes 11 and the plurality of second flakes 22 are stacked alternately, the first flakes 11 and the second flakes 22 each having a plurality of concave recessed portions 101, the recessed portions 101 on the first flakes 11 and the second flakes 22 are staggered, and the first flakes 11 and the second flakes 22 are connected by needle puncture;

[0046] As for the breathable and moisture-absorbing layer arranged as described above, adjacent first flakes 11 and second flakes 22 are opposite to or back to each other through a plurality of recessed portions 101, and the recessed portions 101 are staggered with each other, so that the flakes can be freed by the recessed portions 101, thereby increasing the elasticity of the breathable and moisture-absorbing layer and making the breathable and moisture-absorbing layer with the freed cavity have better breathable and moisture-absorbing performance; the breathable and moisture-absorbing layer is formed by being connected only by physical acupuncture, ensuring that any chemical adhesive is prevented from affecting people.

[0047] The resilience layer is composed of a plurality of third flakes 33 and a plurality of fourth flakes 44 stacked together. The plurality of third flakes 33 and the plurality of fourth flakes 44 are arranged in a staggered manner. The third flakes 33 have a plurality of transverse ridges 301, and the fourth flakes 44 have a longitudinal ridge 401. The third flakes 33 and the fourth flakes 44 are bonded together by an adhesive.

[0048] As for the resilience layer set as described above, the third flakes 33 and the fourth flakes 44 are stacked in an interlaced manner, and a plurality of transverse ridges 301 and a plurality of longitudinal ridges 401 form an interlaced grid in the thickness direction, thereby further suspending the resilience layer, thereby greatly improving the elasticity of the resilience layer and greatly improving its resilience effect; the adjacent third flakes 33 and fourth flakes 44 are bonded by an adhesive, and the adhesive is polyacrylate: aqueous solution = 1:50 (mass ratio); because the resilience layer is in the sandwich layer, it is not easy to come into contact with the skin, and the polyacrylate is not easy to affect people, so that the resilience cotton can be safely used in a wider range of fields.

[0049] The processing technology of needle-punched rebound cotton includes the following steps:

[0050] S1. Prepare coolplus fiber and hollow fiber raw materials;

[0051] S2, feeding coolplus fiber and hollow fiber raw materials into the opening machine for opening;

[0052] S3, feeding the opened coolplus fiber and hollow fiber raw materials into the carding machine for carding treatment;

[0053] S4, comb the coolplus fiber and hollow fiber raw materials to form a mesh flake, and press out the concave parts and convex strips through the forming roller,

[0054] Among them, there are two groups of forming rollers. The two roller bodies of one group of forming rollers respectively have corresponding recessed holes 201 and protrusions 202, which can cooperate to press the passing flakes out of the recessed parts; the two roller bodies of the other group of forming rollers respectively have corresponding prismatic convex rings 203 and prismatic grooves 204, which can press the passing flakes into prismatic convex strips; the roller bodies of the forming rollers can be provided with heating elements for shaping the convex strips and recessed parts pressed out on the flakes.

[0055] S5. Lay the coolplus fiber mesh flakes and stack them in an S shape, staggering the concave portions on adjacent flakes, and then connect them by acupuncture to form a breathable and moisture-absorbing layer;

[0056] The hollow fiber mesh flakes are stacked so that the ridges on adjacent flakes are arranged in a crisscross pattern, and the flakes are connected by an adhesive to form a resilient layer;

[0057] When the coolplus fiber mesh flakes are laid and stacked, the continuous mesh flakes are stacked in an S shape to form a breathable and moisture-absorbing layer;

[0058] S6. A rebound layer is provided between the two breathable and moisture-absorbing layers, and the two layers are bonded together by an adhesive to form a rebound cotton;

[0059] The breathable and moisture-absorbing layer and the resilient layer are bonded together by an atomized adhesive, and then dried and shaped by heating;

[0060] S7. Cut and roll the rebound cotton, and finally pack it for storage.

[0061] Through the above-mentioned processing steps, the needle-punched rebound cotton described in the invention can be processed. The breathable and moisturizing layers of the rebound cotton are connected by physical needling, and the sandwiched rebound layer and the two breathable and moisturizing layers of the outer layer are bonded with a polyacrylate aqueous solution, which greatly reduces the use of chemical adhesives and ensures that the rebound cotton is more environmentally friendly and has a wider range of applications.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A needle-punched rebound cotton, characterized in that: include The first breathable and moisture-absorbing layer is made of coolplus fiber. The rebound layer is composed of hollow fibers. The second breathable and moisture-absorbing layer is made of coolplus fiber; The first breathable and moisture-absorbing layer, the resilience layer and the second breathable and moisture-absorbing layer are stacked in sequence from top to bottom and are connected and fixed with an adhesive. The first breathable and moisture-absorbing layer and the second breathable and moisture-absorbing layer account for 60%-90% of the total mass of the rebound cotton, the rebound layer accounts for 10%-40% of the total mass of the rebound cotton, and the binder accounts for 10%-30% of the total mass of the rebound cotton; The first breathable and moisture-absorbent layer and the second breathable and moisture-absorbent layer are both composed of a plurality of first flakes and a plurality of second flakes, the plurality of first flakes and the plurality of second flakes are stacked alternately, the first flakes and the second flakes each have a plurality of concave recesses, and the recesses on the first flakes and the second flakes are staggered. The resilience layer is composed of a plurality of third flakes and a plurality of fourth flakes stacked together, the plurality of third flakes and the plurality of fourth flakes are arranged in a staggered manner, the third flakes have a plurality of transverse ridges, and the fourth flakes have a plurality of longitudinal ridges; The first flakes and the second flakes are connected by needle punching, and the third flakes and the fourth flakes are bonded by an adhesive; The processing technology of the needle-punched rebound cotton includes the steps of S1. Prepare coolplus fiber and hollow fiber raw materials; S2, feeding coolplus fiber and hollow fiber raw materials into the opening machine for opening; S3, feeding the opened coolplus fiber and hollow fiber raw materials into the carding machine for carding treatment; S4, combing the coolplus fiber and hollow fiber raw materials to form a mesh flake, and pressing the concave parts and convex strips through the forming roller; S5. Stack the CoolPlus fiber mesh sheets so that the concave portions on adjacent sheets are staggered, and then connect them by needling with a needle punching device to form a breathable and moisture-absorbing layer; stack the hollow fiber mesh sheets so that the ridges on adjacent sheets are arranged in a crisscross pattern, and connect the sheets with an adhesive to form a resilient layer; S6. A rebound layer is provided between the two breathable and moisture-absorbing layers, and the two layers are bonded together by an adhesive to form a rebound cotton; S7. Cut and roll the rebound cotton, and finally pack it for storage.

2. The needle-punched rebound cotton according to claim 1, characterized in that: The binder is composed of 1-10% by weight of polyacrylate and 90-99% by weight of water.

3. The needle-punched rebound cotton according to claim 1, characterized in that: In step S4, there are two groups of forming rollers. The two roller bodies of one group of forming rollers respectively have corresponding concave holes and protrusions, and the two roller bodies of the other group of forming rollers respectively have corresponding prismatic convex rings and prismatic grooves.

4. The needle-punched rebound cotton according to claim 1, characterized in that: In step S5, when the coolplus fiber mesh flakes are laid and stacked, the continuous mesh flakes are stacked in an S shape to form a breathable and moisture-absorbing layer.

5. The needle-punched rebound cotton according to claim 1, characterized in that: In step S6, the breathable and moisture-absorbing layer and the resilient layer are bonded together by using an atomized adhesive, and then heated, dried, and shaped.

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