China hemp fiber complex as well as preparation method and application thereof

Abstract

The invention relates to a China-hemp fiber complex as well as a preparation method and application thereof, belongs to the field of mattress products, and provides a China-hemp fiber complex aiming at the problem that fiber materials for existing mattresses cannot meet the requirements of antibiosis, mite removal and the like, the China-hemp fiber complex is prepared from the following raw materials in percentage by mass: 20-50% of China-hemp fibers, 10-40% of low-melting-point fibers and the balance of hollow polyester fibers, wherein a bonding layer is formed on the surfaces of the hemp fibers and the hollow polyester fibers after the low-melting-point fibers are subjected to hot melting. The hemp fibers with excellent antibacterial and anti-mite performance, the low-melting-point fibers with a good bonding effect and the hollow polyester fibers with excellent air permeability are adopted as raw materials, the bonding layers are formed on the surfaces of the hemp fibers and the hollow polyester fibers after the low-melting-point fibers are subjected to hot melting, the use performance of the hemp fiber complex can be guaranteed, and the hemp fiber complex is not prone to loosening and cracking.

Description

Technical Field

[0001] The invention belongs to the field of mattress products, and particularly relates to a hemp fiber composite and a preparation method and application thereof. Background Art

[0002] The fiber materials used in existing mattresses include substitute palm cotton, ordinary non-glue cotton, etc. Among them, substitute palm cotton is often made of coconut palm silk or jute silk to make coconut palm jute to prepare coconut palm and jute materials, although coconut palm silk bundles and jute silk bundles belong to plant silk bundles. If the desugaring and degumming of coconut palm is not thorough, it is easy to breed insects after being damp, and there will also be odor problems after high temperature hot pressing; ordinary non-glue cotton itself usually does not have antibacterial and anti-mite functions. The common method is to add functional chemicals to the fiber to achieve antibacterial and anti-mite functions. There are generally two operating methods: one is to add antibacterial and anti-mite additives to the surface of chemical fibers through the post-finishing method (impregnation) of chemical fibers through the impregnation process; the other is to add antibacterial functional additives to the spinning solution when the polyester chip resin is spinning, so that the functional additives are built into the fiber; chlorpyrifos odors are often used to repel mites.

[0003] Therefore, the fiber materials used in existing mattresses cannot meet the requirements of antibacterial and mite removal. Summary of the invention

[0004] In view of the fact that the fiber materials used in existing mattresses themselves cannot meet the requirements of antibacterial and anti-mite, the present invention provides a hemp fiber body and a preparation method and application thereof, and prepares a hemp fiber body that meets the requirements of antibacterial and anti-mite.

[0005] The technical scheme adopted by the present invention is as follows: a hemp fiber composite, whose raw materials include, by mass fraction, 20-50% hemp fiber, 10-40% low-melting point fiber, and the rest hollow polyester fiber, wherein the low-melting point fiber is hot-melted to composite the hemp fiber and the hollow polyester fiber.

[0006] Hemp fiber contains a variety of hemp phenols that are beneficial to the human body. These substances have natural antibacterial properties and can effectively inhibit the growth and reproduction of common bacteria such as Escherichia coli and Staphylococcus aureus. The internal structure of hemp fiber is a unique cavity shape, which gives it good moisture absorption and breathability. It can quickly absorb sweat discharged from the human body and dissipate it into the air to keep the skin dry. Hemp fiber has high heat resistance and is not easy to deform or damage in high temperature environments. This allows hemp fabrics to withstand higher temperatures during washing and ironing, making it easier to care for and maintain them daily.

[0007] Low-melting-point fibers can melt at relatively low temperatures and, after cooling, enable bonding between fibers or with other materials. By heating to melt the low-melting-point fibers, other fibers can be bonded together to form a fabric structure with a certain strength and stability, eliminating the need for additional adhesives, simplifying the production process, and making the product more environmentally friendly; after melting, the low-melting-point fibers can well fill the gaps between fibers, and the bonding points formed after cooling have a certain flexibility and elasticity, enabling the fabric to maintain good strength while also maintaining a good handfeel and softness, providing a more comfortable wearing experience; compared with some processes using chemical adhesives, the hot-melt bonding process of low-melting-point fibers does not produce harmful chemical substances, reducing environmental pollution. Moreover, some low-melting-point fibers can be prepared from renewable resources, conforming to the concept of sustainable development.

[0008] Hollow polyester fibers have a hollow structure inside, forming channels for air circulation, allowing air to freely shuttle inside the mattress. This helps to expel the heat and moisture generated by the human body during sleep, keeping the sleep environment dry and comfortable, reducing the sense of stuffiness and dampness, and lowering the possibility of bacteria growth and odor caused by moisture; the production cost of hollow polyester fibers is relatively low, which gives products made of this material a certain price advantage, meeting the budget requirements of more consumers and having a high cost performance.

[0009] In this application, after melting, the low-melting-point fibers do not fill the hollow structure of the hollow polyester fibers but form a reliable connection between the individual hollow polyester fibers.

[0010] The preferred solution is that for the hemp fiber composite, its raw materials by mass fraction include: 20 - 35% hemp fiber, 20 - 40% low-melting-point fiber, and the rest are hollow polyester fibers.

[0011] Further, the fineness of the hemp fiber is preferably 20 - 30 tex.

[0012] Further, the low-melting-point fiber preferably has a length of 50 - 60 mm and a fineness of 60 - 70 D (denier).

[0013] Further, the hemp fiber body is hemp non-glue cotton with a thickness of 1.0 - 2.0 cm and a square gram weight preferably of 100 - 300 g / m 2 。

[0014] Further, the hemp fiber body is hemp Q-elastic cotton, and the mass fraction of the low-melting-point fiber used in its raw materials is at most 20%, with a thickness of 1.5 - 2.5 cm and a square gram weight preferably of 1000 - 1600 g / m 2 。

[0015] Further, the hemp fiber body is hemp cotton substituting for coir, and the mass fraction of the low-melting-point fiber used in its raw materials is at least 30%, with a thickness of 1.0 - 4.0 cm and a preferred grammage of 1400 - 4200 g / m 2 .

[0016] The preparation method of the hemp fiber composite includes the following steps:

[0017] Step 1: Loosen and disperse the above raw materials, and mix them evenly in proportion;

[0018] Step 2: Subsequently, card the mixed fibers to form a fluffy thin sheet layer, and stack and lay the carded sheet layers;

[0019] Step 3: Subsequently, melt the low-melting-point fiber at 160 - 180 °C, and press and form according to different thickness and grammage requirements.

[0020] The raw materials of the hemp fiber body are formed by a hot-melt method. During the preparation process, after the low-melting-point fiber is melted, it will adhere to the surface of each fiber, and a reliable connection can be formed after applying appropriate pressure. The preparation process is relatively simple and easy to operate, effectively reducing the preparation difficulty.

[0021] An application of a hemp fiber composite in a mattress.

[0022] The beneficial effects of the present invention: This application is a hemp fiber composite and its preparation method and application. The raw materials adopt hemp fibers with excellent antibacterial and mite-proof properties, low-melting-point fibers with good adhesion properties, and hollow polyester fibers with excellent air permeability. After the low-melting-point fiber is melted, a reliable composite is formed on the surfaces of the hemp fiber and the hollow polyester fiber, which can ensure the service performance of the hemp fiber composite and is not easy to loosen and crack. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the external structure of Example 1;

[0024] Figure 2 It is a schematic diagram of the external structure of Example 4;

[0025] Figure 3 It is a schematic diagram of the external structure of Example 7. Detailed Embodiments

[0026] Combined with the drawings of the present invention below, the technical solutions of the embodiments of the present invention are explained and described. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0027] In the following examples, the low-melting-point fiber is 4080 fiber, and the specifications of the three-dimensional hollow polyester fiber are 7D×64mm.

[0028] Example 1

[0029] This example is a hemp non-glue cotton. As Figure 1 shown, its raw materials by mass fraction include: 20% hemp fiber, 20% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20 - 30 counts, the low-melting-point fiber is preferably 50 - 60 mm in length, and 60 - 70 D (denier) in fineness. The gram weight per square meter is 100 g / m 2 , and the thickness is 1 cm.

[0030] Its preparation method includes the following steps:

[0031] Step 1: Loosen, disperse and mix the above raw materials evenly according to the proportion;

[0032] Step 2: Subsequently, card the mixed fibers to form a fluffy thin sheet layer, and stack and lay the carded sheet layer into a web;

[0033] Step 3: Subsequently, melt the low-melting-point fiber at 160 - 180 °C, press and form according to the requirements of 100 g / m² in gram weight per square meter and 1 cm in thickness, trim the edges and wind it into a finished product.

[0034] Example 2

[0035] This example is a hemp non-glue cotton. Its raw materials by mass fraction include: 35% hemp fiber, 20% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20 - 30 counts, the low-melting-point fiber is preferably 50 - 60 mm in length, and 60 - 70 D (denier) in fineness. The gram weight per square meter is 200 g / m 2 , and the thickness is 1.5 cm.

[0036] The preparation method is the same as that of Example 1.

[0037] Example 3

[0038] This example is a hemp non-glue cotton. Its raw materials by mass fraction include: 50% hemp fiber, 20% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20 - 30 counts, the low-melting-point fiber is preferably 50 - 60 mm in length, and 60 - 70 D (denier) in fineness. The gram weight per square meter is 300 g / m 2 , and the thickness is 2 cm.

[0039] The preparation method is the same as that of Example 1.

[0040] Example 4

[0041] This embodiment is a hemp Q-elastic cotton, as Figure 2 shown, and its raw materials by mass fraction include: 35% hemp fiber, 10% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 tex, the low-melting-point fiber is preferably 50-60 mm in length, and the fineness is 60-70 D (denier). The gram weight per square meter is 1000 g / m 2 , and the thickness is 2 cm.

[0042] Its preparation method includes the following steps:

[0043] Step 1: Loosen and disperse the above raw materials, and mix them evenly in proportion;

[0044] Step 2: Subsequently, card the mixed fibers to form a fluffy thin sheet layer, and stack and lay the carded sheet layers;

[0045] Step 3: Subsequently, melt the low-melting-point fibers at 160-180 °C, press and form according to the requirements of a thickness of 2 cm and a gram weight per square meter of 1000, trim the edges and wind them into a finished product.

[0046] Example 5

[0047] This embodiment is a hemp Q-elastic cotton, and its raw materials by mass fraction include: 50% hemp fiber, 20% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 tex, the low-melting-point fiber is preferably 50-60 mm in length, and the fineness is 60-70 D (denier). The gram weight per square meter is 1400 g / m 2 , and the thickness is 2 cm.

[0048] The preparation method is the same as that of Example 4.

[0049] Example 6

[0050] This embodiment is a hemp Q-elastic cotton, and its raw materials by mass fraction include: 50% hemp fiber, 20% low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 tex, the low-melting-point fiber is preferably 50-60 mm in length, and the fineness is 60-70 D (denier). The gram weight per square meter is 1600 g / m 2 , and the thickness is 2.5 cm.

[0051] The preparation method is the same as that of Example 4.

[0052] Example 7

[0053] This embodiment is a hemp substitute for palm cotton, as Figure 3As shown, its raw materials by mass fraction include: 20% of hemp fiber, 30% of low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 counts, the low-melting-point fiber is preferably 50-60 mm in length and 60-70 D (denier) in fineness. The grammage is 1200 g / m 2 , and the thickness is 1.0 cm.

[0054] Its preparation method includes the following steps:

[0055] Step 1: Loosen and disperse the above raw materials, and mix them evenly in proportion;

[0056] Step 2: Subsequently, card the mixed fibers to form a fluffy thin layer, and stack and lay the carded layers to form a web;

[0057] Step 3: Subsequently, melt the low-melting-point fiber at 160-180 °C, and press and form according to the requirements of a grammage of 1200 and a thickness of 1 cm.

[0058] Example 8

[0059] This example is a hemp substitute for palm cotton, and its raw materials by mass fraction include: 35% of hemp fiber, 40% of low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 counts, the low-melting-point fiber is preferably 50-60 mm in length and 60-70 D (denier) in fineness. The grammage is 1600 g / m 2 , and the thickness is 1.2 cm.

[0060] The preparation method is the same as that of Example 7.

[0061] Example 9

[0062] This example is a hemp substitute for palm cotton, and its raw materials by mass fraction include: 50% of hemp fiber, 30% of low-melting-point fiber, and the rest are three-dimensional hollow polyester fibers. The fineness of the hemp fiber is preferably 20-30 counts, the low-melting-point fiber is preferably 50-60 mm in length and 60-70 D (denier) in fineness. The grammage is 4200 g / m 2 , and the thickness is 4.0 cm.

[0063] The preparation method is the same as that of Example 7.

[0064] Comparative Example 1

[0065] Ordinary non-glued cotton is used as a comparative example, and the raw materials of the ordinary non-glued cotton by mass fraction include: 25% of low-melting-point fiber and 75% of polyester fiber.

[0066] Comparative Example 2

[0067] Under the preparation conditions of Example 1, hemp fibers were used to prepare a product with the same gram weight per square and thickness as the hemp non-glue cotton in Example 1, but it was found that it could not be formed.

[0068] Test verification:

[0069] 1. The antibacterial rate test was carried out in accordance with "GB / T 20944.2 Evaluation of antibacterial properties of textiles - Part 2: Absorption method";

[0070] 2. The mite repellency rate test was carried out in accordance with "GB / T 24253 Evaluation of mite-proof performance of textiles";

[0071] 3. The formaldehyde removal rate test was carried out in accordance with "GB / T2761 Determination method for purification effect of indoor air purification products";

[0072] 4. The removal rate of deodorization (isovaleric acid, acetic acid) was carried out in accordance with "GB / T 33610 Test for deodorization performance of textiles".

[0073] The formaldehyde removal rate test was carried out according to the standard QB / T 2761-2006.

[0074] The results are shown in the following table.

[0075]

[0076] Detection method (reference standard):

[0077] 1) Antibacterial rate: GB / T 20944.2 Evaluation of antibacterial properties of textiles - Part 2: Absorption method;

[0078] 2) Mite repellency rate: GB / T 24253 Evaluation of mite-proof performance of textiles;

[0079] 3) Formaldehyde removal rate: GB / T2761 Determination method for purification effect of indoor air purification products;

[0080] 4) Removal rate of isovaleric acid and acetic acid: GB / T 33610 Test for deodorization performance of textiles.

[0081] From the comparison results of the examples and the comparative example, it can be seen that in Examples 1-9, the antibacterial rates of Escherichia coli, Staphylococcus aureus, and Klebsiella pneumoniae are all significantly higher than those in Comparative Example 1. The antibacterial rates of the examples are mostly above 86%, and some even reach 97%. In Comparative Example 1, the antibacterial rate of Escherichia coli is 55%, the antibacterial rate of Staphylococcus aureus is 74%, and the antibacterial rate of Klebsiella pneumoniae is 68%. This shows that the solutions of the examples have obvious advantages in antibacterial performance and have good antibacterial effects. The mite repellency rates of Examples 1-9 are between 75% and 86%, while that of Comparative Example 1 is 56%. The mite repellency effect of the examples is significantly better, indicating that the solutions of the examples have a good effect on repelling mites. The isovaleric acid removal rates of Examples 1-9 are between 83% and 95%, and that of Comparative Example 1 is 62%. The acetic acid removal rates of Examples 1-9 are between 81% and 93%, and that of Comparative Example 1 is 73%. Therefore, the isovaleric acid and acetic acid removal effects of the examples are both better than those of Comparative Example 1, indicating that the solutions of the examples have better performance in removing odors (represented by isovaleric acid and acetic acid). Compared with Comparative Example 1, the products of Examples 1-9 all have good antibacterial, mite-proof, formaldehyde removal, and deodorizing effects.

[0082] As described above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the scope of the claims.

Claims

1. A hemp fiber composite, characterized in that, Its raw materials by mass fraction include: 20-50% of hemp fiber, 10-40% of low-melting-point fiber, and the rest are hollow polyester fibers. The low-melting-point fiber is melted to composite the hemp fiber and the hollow polyester fiber.

2. The hemp fiber composite according to claim 1, characterized in that, Its raw materials by mass fraction include: 20-35% of hemp fiber, 20-40% of low-melting-point fiber, and the rest are hollow polyester fibers.

3. The hemp fiber composite according to claim 1 or 2, characterized in that, The fineness of the hemp fiber is 20-30 tex.

4. The hemp fiber composite according to claim 1 or 2, characterized in that, The low-melting-point fiber preferably has a length of 50-60 mm and a fineness of 60-70 D.

5. The hemp fiber composite according to claim 1 or 2, characterized in that, The hemp fiber body is hemp non-gum cotton, with a thickness of 1.0 - 2.0 cm and a gram weight per square meter of 100 - 300 g / m 2 .

6. The hemp fiber composite according to claim 1 or 2, characterized in that, The hemp fiber body is hemp Q-elastic cotton, and the mass fraction of the low-melting-point fiber used in its raw materials is at most 20%, with a thickness of 1.5 - 2.5 cm and a gram weight per square meter of 1000 - 1600 g / m 2 .

7. The hemp fiber composite according to claim 1 or 2, characterized in that, The hemp fiber body is hemp cotton substitute, and the mass fraction of the low-melting-point fiber used in its raw materials is at least 30%, with a thickness of 1.0 - 4.0 cm and a gram weight per square meter of 1400 - 4200 g / m 2 .

8. The preparation method of the hemp fiber composite according to any one of claims 1 to 7, comprising the following steps: Step 1, loosen and disperse the above raw materials, and mix them evenly in proportion; Step 2, then card the mixed fibers to form a fluffy thin sheet layer, and stack and lay the carded sheet layer; Step 3, then melt the low-melting-point fiber at 160-180 °C, and press and form according to different thickness and gram per square meter requirements.

9. The application of the hemp fiber composite according to any one of claims 1 to 7 in a mattress.

Images