Preparation method of multifunctional fiber composite natural Talalay crushed latex product and its application in pillows

Abstract

The invention discloses a preparation method of a multifunctional fiber composite natural Talalay crushed latex product and its application in a pillow. The method comprises crushing Talalay latex into 1-2 cm particles, and fully mixing it with a functional fiber with polyester fiber as a carrier and loaded with functional particles, using the mixture as a filler to prepare a latex product, and further making a pillow as a pillow core. The preparation method not only retains the excellent comfort and support performance of pure crushed latex particle fillers, but also significantly improves the overall stability of latex products by introducing functional fibers. Due to its high strength and elasticity, the functional fiber can quickly return to its original state after being compressed. This characteristic helps to promote the recovery of crushed latex particles, thereby maintaining the lasting form and function of latex products.

Description

Technical Field

[0001] The invention relates to the technical field of composite materials, in particular to a preparation method of a multifunctional fiber composite natural Talalay crushed latex product and application of the product in pillows. Background Art

[0002] Latex is a natural polymer substance, mainly composed of water, rubber, protein, oil and other ingredients. It is usually collected from rubber trees and is a yellow liquid that flows out of rubber trees. After high-temperature treatment, stirring, filtering and other processes, it becomes a milky white emulsion-like substance. Latex is natural, environmentally friendly, non-toxic and harmless, and has good elasticity, wear resistance, tear resistance and other characteristics.

[0003] The latex particle pillow is a type of latex pillow. It is made by breaking a whole piece of solid latex into fine particles of uniform size, and then filling the particles into a pillow core. Compared with a whole piece of latex pillow, the latex particles are fine and can flow between the particles. They can actively adapt to the different sleeping positions of different people and meet the sleep needs of different people. At the same time, there are many gaps between the latex particles, which can accelerate air circulation faster.

[0004] However, latex particle pillows are not stable enough, which means they are easy to deform, which requires frequent care. If they are not taken care of, they will deform or even collapse.

[0005] Therefore, it is necessary to provide a preparation method of a multifunctional fiber composite natural Talalay crushed latex product and its application in pillows to solve the above technical problems. Summary of the invention

[0006] The invention overcomes the shortcomings of the prior art and provides a preparation method of a multifunctional fiber composite natural Talalay crushed latex product and application of the product in a pillow.

[0007] To achieve the above object, the technical solution adopted by the present invention is: a method for preparing a multifunctional fiber composite natural Talalay crushed latex product, comprising the following steps:

[0008] S1. Preparation of Talalay latex using Talalay process;

[0009] The Talalay latex comprises, by weight: 100 parts of natural latex, 1-5 parts of dispersant, 3-8 parts of vulcanizer, 1-5 parts of vulcanization accelerator, and 1-5 parts of antioxidant;

[0010] S2, crushing the Talalay latex to form Talalay crushed latex particles with a particle size of 0-5cm and excluding 0;

[0011] S3, mixing the Talalay crushed latex particles with functional fibers as fillers, and filling the mixture into fabrics to prepare multifunctional fiber composite natural Talalay crushed latex products.

[0012] In a preferred embodiment of the present invention, in S1, the process of foaming Talalay latex includes:

[0013] S11, mixing natural latex with functional additives to form composite latex;

[0014] S12, quantitatively injecting the mixed latex into the mold, performing vacuum foaming and freezing gel;

[0015] S13, heating the mold to 100-120°C, vulcanizing the latex, and finally demoulding.

[0016] In a preferred embodiment of the present invention, the particle size of the Talalay crushed latex particles is 1-2 cm.

[0017] In a preferred embodiment of the present invention, in S2, multi-stage screening is used to control the particle size difference of Talalay crushed latex particles within 0.3 cm.

[0018] In a preferred embodiment of the present invention, the functional fiber has a diameter of 70-100 μm and a length of 9-15 mm; the functional fiber is formed by mixing functional nanoparticles and fiber carriers through spinning and weaving.

[0019] In a preferred embodiment of the present invention, the functional nanoparticles include: at least one of graphene, negative ion powder, far infrared powder, antibacterial and anti-mite powder, formaldehyde removal powder, odor removal powder, anti-allergic or carrier particles loaded with traditional Chinese medicine antiviral ingredients.

[0020] In a preferred embodiment of the present invention, the fiber carrier is polyester fiber.

[0021] In a preferred embodiment of the present invention, the mixing process in S3 includes:

[0022] S31, treating the functional fiber with a dispersant and an antistatic agent, and drying the Talalay crushed latex particles and the functional fiber for 5-15 minutes;

[0023] S32. Load Talalay crushed latex particles and functional fibers into a drum mixing device, and perform mechanical mixing at 10-15 rpm for 10-30 min to obtain a mixture, in which the crushed latex particles account for 60% to 90% and the functional fibers occupy the rest.

[0024] The invention discloses an application of a multifunctional fiber composite natural Talalay crushed latex product. The multifunctional fiber composite natural Talalay crushed latex product is used as a pillow core raw material to prepare a pillow.

[0025] In a preferred embodiment of the present invention, the filling compactness of the multifunctional fiber composite natural Talalay crushed latex product is 45D-55D.

[0026] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0027] (1) The present invention provides a method for preparing a multifunctional fiber composite natural Talalay crushed latex product. The method comprises crushing Talalay latex into particles of 1-2 cm, and fully mixing it with functional fibers having polyester fibers as carriers and loaded with functional particles, and using the mixture as a filler to prepare a latex product. The preparation method not only retains the excellent comfort and support performance of pure crushed latex particle fillers, but also significantly improves the overall stability of latex products by introducing functional fibers. Due to its high strength and elasticity, functional fibers can quickly return to their original state after being compressed. This property helps to promote the recovery of crushed latex particles, thereby maintaining the lasting shape and function of latex products.

[0028] (2) The present invention provides an application of a multifunctional fiber composite natural Talalay crushed latex product, and uses the multifunctional fiber composite natural Talalay crushed latex product as a pillow core raw material to prepare a pillow. Specifically, a mixture of Talalay crushed latex particles and functional fibers is used as a filler to prepare a pillow core with a filling density of 45D-55D. The pillow prepared under this filling density not only maintains good comfort and support, but also can reduce the relative displacement space between Talalay crushed latex particles and functional fibers during long-term use, thereby reducing the possibility of displacement of the functional fibers.

[0029] (3) The present invention uses a drum mixing device to fully mix the Talalay crushed latex particles and the functional fibers. The drum mixing device rotates to make the materials perform complex three-dimensional movements in the cylinder, thereby achieving the purpose of mixing. During the rotation of the cylinder, the lifting plate in the cylinder will push the material to move in a circumferential direction along the cylinder wall. At the same time, due to a certain angle between the lifting plate and the central axis of the cylinder, the material will also move in the front and back directions in the cylinder to achieve all-round mixing. This mixing method allows the functional fibers to be mixed not only in the gaps between the Talalay crushed latex particles, but also interspersed in the honeycomb structure of the Talalay crushed latex particles. This avoids the phenomenon that the functional fibers are easily skipped by conventional mechanical mixing because the functional fibers are small, causing them to accumulate at the bottom of the cylinder, and the stirring paddle cannot drive the functional fibers to move. After a long period of mixing, the functional fibers will accumulate in the lower layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 The present invention is a flow chart of a method for preparing a multifunctional fiber composite natural Talalay crushed latex product. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figure 1 As shown, the present invention provides a method for preparing a multifunctional fiber composite natural Talalay crushed latex product, comprising the following steps:

[0035] S1. Preparation of Talalay latex using Talalay process;

[0036] S2, crushing the Talalay latex to form Talalay crushed latex particles of 0-5 cm and excluding 0;

[0037] S3. Mix Talalay crushed latex particles with functional fibers as fillers, and fill them into fabrics to prepare multifunctional fiber composite natural Talalay crushed latex products.

[0038] The present invention provides a method for preparing a multifunctional fiber composite natural Talalay crushed latex product. The method comprises crushing Talalay latex into particles of 1-2 cm, and fully mixing it with functional fibers using polyester fibers as carriers and carrying functional particles, and using the mixture as a filler to prepare latex products. The preparation method not only retains the excellent comfort and support performance of pure crushed latex particle fillers, but also significantly improves the overall stability of latex products by introducing functional fibers. Due to its high strength and elasticity, the functional fiber can quickly return to its original state after being compressed. This characteristic helps to promote the recovery of crushed latex particles, thereby maintaining the lasting shape and function of latex products.

[0039] Each step is described in detail below.

[0040] Step S1, using the Talalay process to prepare Talalay latex, the Talalay latex comprises, by weight: 100 parts of natural latex, 1-5 parts of dispersant, 3-8 parts of vulcanizing agent, 1-5 parts of vulcanization accelerator, and 1-5 parts of antioxidant.

[0041] The following is a specific selection of functional additives.

[0042] Dispersant: sodium carboxymethyl cellulose solution;

[0043] Curing agent: at least one of sulfur, tetramethylthiuram disulfide and morpholine disulfide;

[0044] Vulcanization accelerator: at least one of ethyl-phenyl-zinc dithiocarbamate and diethyl zinc dithiocarbamate;

[0045] Antioxidant: at least one of 2,6-di-tert-butyl-4-methylphenol, dimethylbenzyl and diphenylamine.

[0046] Further, the preparation process of Talalay latex includes:

[0047] S11. Mixing natural latex with functional additives to form composite latex; the functional additives include: a dispersant, a vulcanizer, a vulcanization accelerator and an antioxidant.

[0048] S12, quantitatively injecting the mixed latex into the mold for vacuum foaming and freezing gelation.

[0049] S13, heating the mold to 100-120°C, vulcanizing the latex, and finally demoulding.

[0050] In step S12, the mixed latex is fully foamed in the sealed mold by the principle of vacuuming, and each part is foamed uniformly. In this step, the mold is a special aluminum mold equipped with a large number of needles. There are about 20,000 needles on each mold cover and mold base. These needles help conduct heat to the center of the latex block and form "pinholes" that are helpful for drying in the subsequent process.

[0051] Furthermore, after the vacuum foaming treatment, the mixed latex stock solution expands to completely fill the mold, and then is instantly frozen at -30°C for 5-20 minutes, and then carbon dioxide gas is passed through the frozen block to make the bubbles interconnected and the latex foam gelled.

[0052] In step S13, heat transfer oil is used as a heat medium to heat the mold and vulcanize the mixed latex. The heat medium heats the mold and transfers heat to the latex material in the mold, so that the water in the latex and the small material inside evaporates to form water vapor. In addition, since the mold is sealed, the temperature of the high-pressure water vapor can reach up to 120°C, which accelerates the vulcanization speed.

[0053] Furthermore, the demoulding Talalay latex is cleaned and dried to remove residual soap and other substances.

[0054] Talalay latex prepared by the above method abandons chemical foaming agents and sodium fluorosilicate, ensuring the purity and health of the product. Its internal balanced honeycomb structure provides excellent resilience and durability, while enhancing ventilation and air permeability, effectively regulating temperature and humidity, and is particularly suitable for use in summer, reducing humidity and heat, and maintaining skin health.

[0055] Step S2, crushing the Talalay latex to form Talalay crushed latex particles of 0-5 cm and excluding 0.

[0056] Specifically, the fragmentation of Talalay latex includes the following steps:

[0057] S21. Divide large pieces of Talalay latex into smaller pieces or strips for subsequent crushing.

[0058] S22, the cut latex blocks are sent to the crushing equipment, and the crushing gap or screen particle size of the equipment is adjusted to ensure that the particle size of the discharged Talalay crushed latex particles is 1-2 cm.

[0059] Furthermore, multi-stage screening is used to ensure that the particle size of Talalay crushed latex particles is within the particle size difference range of 0-0.3 cm. Example: It is expected to obtain Talalay crushed latex particles with a particle size of X cm. First, use a screen of X+0.15 cm to screen out Talalay crushed latex particles with large particle sizes, and then use a screen of X-0.15 cm to screen out Talalay crushed latex particles with small particle sizes. Through two-stage screening, the maximum particle size difference between the obtained Talalay crushed latex particles is kept within 0.3 cm. This method is used to ensure that the size of the Talalay crushed latex particles is balanced.

[0060] The Talalay crushed latex particles are too large, although the production difficulty and cost can be reduced, but large unevenness will appear on the surface of the latex product, and uniform support cannot be provided; while the Talalay crushed latex particles that are too small will increase the production difficulty and cost, but will destroy the honeycomb structure of the Talalay latex and reduce the air permeability of the latex product. The present invention uses Talalay crushed latex particles with a particle size of 1-2cm, and the maximum particle size difference between the particles is maintained within 0.3cm, the particle size is appropriate, and the size is balanced, so that the surface of the latex product prepared as a filler is smooth, elasticity and support are balanced, and it has good air permeability.

[0061] Step S3, mixing the Talalay crushed latex particles with the functional fibers to form a multifunctional fiber composite natural Talalay crushed latex product.

[0062] Furthermore, the functional fiber has a diameter of 70-100 μm and a length of 9-15 mm.

[0063] It is worth noting that the functional fiber is formed by mixing and spinning the functional nanoparticles and the fiber carrier. The mixed spinning method is to prepare the functional masterbatch first and then blend and spin or directly blend and spin; the spinning method is melt spinning, solution spinning, electrostatic spinning, dry spinning or wet spinning.

[0064] In mixed spinning, there are two main paths: one is to prepare the functional masterbatch first and then blend spinning. This method usually involves uniformly dispersing the functional nanoparticles in the polymer matrix through specific dispersion technology and surface treatment technology to form a functional masterbatch, and then blending it with conventional fiber raw materials for spinning; the other is direct blending spinning, that is, mixing the functional nanoparticles directly with the polymer melt or solution and then spinning.

[0065] Further, the functional nanoparticles include at least one of: graphene, negative ion powder, far infrared powder, antibacterial and anti-mite powder, formaldehyde removal powder, odor removal powder, anti-allergic or carrier particles loaded with Chinese medicine antiviral ingredients, specifically:

[0066] Negative ion powder: such as tourmaline negative ion powder, natural opal mineral powder, etc.;

[0067] Far infrared powder: vermiculite ore powder, medical stone ore powder, far infrared ceramic powder, etc.

[0068] Antibacterial and anti-mite powder: silver, copper, zinc ions or oxide powder, etc.;

[0069] Formaldehyde removal powder: nano mineral crystal, titanium dioxide, etc.;

[0070] Deodorizing powder: zinc oxide, titanium dioxide, diatomaceous earth, etc.

[0071] Anti-allergic agents: inorganic anti-allergic agents, silver particles, nano copper oxide and nano zinc oxide, etc.;

[0072] Carrier particles loaded with antiviral ingredients of traditional Chinese medicine: Carrier particles loaded with antiviral ingredients of traditional Chinese medicine can be silica aerogel microspheres adsorbed with antiviral ingredients of traditional Chinese medicine, and the antiviral ingredients of traditional Chinese medicine include extracts of at least one of wormwood, isatis root, dandelion, honeysuckle, wild chrysanthemum, isatis indigotica, andrographis paniculata, scutellaria baicalensis, coptis chinensis, phellodendron, bupleurum, cyrtomium, forsythia, knotweed, belamcanda vine, rhubarb, houttuynia cordata, elsholtzia, perilla, cyperus rotundus, arborvitae, polygonatum, schisandra chinensis, arctium bark, siler, perilla, verbena, rubescens, sophora flavescens, Scrophularia ningpoensis, scutellaria baicalensis, kochia scoparia, duchesnea, bezoar, lithospermum officinale, orange peel, podocarpus rotundus, and mint.

[0073] Furthermore, the fiber carrier is polyester fiber. The present invention uses polyester fiber as the fiber carrier, and utilizes the high strength and elasticity of polyester fiber. The prepared functional fiber can restore to its original shape after being compressed, reducing displacement.

[0074] The present invention weaves functional fibers by mixing functional nanoparticles with polyester fibers through spinning, thereby not only retaining the strength and elasticity of the polyester fibers, but also adding functions such as negative ions, far-infrared heating, antibacterial and anti-mite, formaldehyde removal, odor removal and anti-allergy, further improving the function of preparing latex products using a mixture of the functional fibers and Talalay crushed latex particles as a filler, and as a home textile product, having a higher degree of comfort.

[0075] In one embodiment, functional fibers are prepared using polyester fibers as a fiber carrier, which are mixed with Talalay crushed latex particles as a filler to prepare crushed latex products. The elasticity and air permeability of the Talalay crushed latex particles provide good support and comfort for the crushed latex products, while the durability and easy processability of the chemical fiber ensure the stability and production efficiency of the crushed latex products.

[0076] The mixing process in step S3 includes:

[0077] S31, treating the functional fiber with a dispersant and an antistatic agent, and drying the Talalay crushed latex particles and the functional fiber for 5-15 minutes. This step is to completely remove the moisture in the Talalay crushed latex particles and the functional fiber, and avoid the local presence of moisture during the mixing process, which may cause the functional fiber to agglomerate.

[0078] S32, loading the Talalay crushed latex particles and the functional fibers into a drum mixing device, and mechanically mixing them at 10-15 revolutions per minute for 10-30 minutes to obtain a mixture, wherein the crushed latex particles account for 60-90% of the mixture, and the functional fibers account for the rest.

[0079] The present invention adopts drum mixing equipment to fully mix Talalay crushed latex particles with functional fiber, and drum mixing equipment makes material carry out complicated three-dimensional motion in cylinder by rotation, thereby reaches the purpose of mixing.In the process of cylinder rotation, the copying plate in cylinder can promote material to make circumferential motion along cylinder wall, and simultaneously due to the certain angle of copying plate and cylinder center axis, material can also carry out the motion of front-back direction in cylinder, realizes omnidirectional mixing, such mixing mode, makes functional fiber not only be mixed in the gap between Talalay crushed latex particles, but also be interspersed in the honeycomb structure of Talalay crushed latex particles.Avoid because functional fiber is small, conventional mechanical mixing easily skips functional fiber, causes it to gather at cylinder bottom, stirring paddle cannot drive functional fiber activity, after long-time mixing, there will be the phenomenon that functional fiber gathers in lower floor.

[0080] Furthermore, the mixture is used as a filler and filled into fabric to prepare a multifunctional fiber composite natural Talalay crushed latex product.

[0081] In one embodiment, the fabric can be cotton fabric, linen fabric, bamboo fiber fabric, polyester fiber fabric or blended fabric, etc. In addition to considering its comfort and breathability, it is also necessary to pay attention to the durability and washability of the fabric. Fabrics with good durability can extend the service life of the pillow, while fabrics that are easy to wash are convenient for daily maintenance and care.

[0082] A multifunctional fiber composite natural Talalay crushed latex product is used as a pillow core raw material to prepare a pillow. The filling compactness of the multifunctional fiber composite natural Talalay crushed latex product is 45D-55D.

[0083] The pillow prepared under this filling firmness not only maintains good comfort and support, but also can reduce the relative displacement space between Talalay crushed latex particles and functional fibers during long-term use, thereby reducing the possibility of functional fiber displacement. Because the mixture of Talalay crushed latex particles and functional fibers will flow to adapt to the pressure when squeezed during use, but in long-term use, it will be squeezed to different degrees and positions, which will cause the functional fibers to shift to a certain extent, resulting in uneven distribution of Talalay crushed latex particles, which will cause changes in the comfort and support of various parts of the pillow, affecting use.

[0084] Furthermore, the filled and formed pillows are cleaned, sorted and packaged. The cleaning process needs to ensure the hygiene and safety of the product; the sorting process includes trimming, sewing and other processes; the packaging uses environmentally friendly materials to ensure the safety of the product during transportation and storage.

[0085] Further, quality control of pillows:

[0086] Raw material inspection: Talalay latex particles and functional fibers are strictly inspected to ensure that their quality and safety meet relevant standards.

[0087] Production process monitoring: monitor and record each link in the production process to ensure the consistency and stability of product quality.

[0088] Finished product inspection: The finished pillows are fully inspected and tested, including appearance, size, elasticity, breathability, etc. Only products that meet quality standards can be shipped out of the factory.

[0089] Example 1

[0090] This embodiment prepares a latex particle pillow core based on the above-mentioned method for preparing a multifunctional fiber composite natural Talalay crushed latex product, and the specific steps are as follows:

[0091] S1. Talalay latex is prepared using the Talalay process, comprising: 1) mixing 100 parts of natural latex, 2 parts of sodium carboxymethyl cellulose solution, 5 parts of tetramethylthiuram disulfide, 2 parts of zinc diethyldithiocarbamate and 3 parts of dimethylbenzyl by weight to form a composite latex; 2) injecting the composite latex into a mold in a quantitative manner, performing vacuum foaming, and then freezing it instantly at -30°C for 10 minutes, and then passing carbon dioxide gas through the frozen block to connect the bubbles to each other and gel the latex foam; 3) using heat transfer oil as a heat medium to heat the mold to 110°C, vulcanizing the mixed latex, and then demolding.

[0092] S2. Crushing the Talalay latex to obtain crushed Talalay latex particles with a particle size of 1.5 cm.

[0093] S3, Talalay crushed latex particles are mixed with functional fibers with a diameter of 80μm and a length of 12mm. The mixing process includes: 1) treating the functional fibers with dispersants and antistatic agents, and drying the Talalay crushed latex particles and functional fibers for 5-15min; 2) loading the Talalay crushed latex particles and functional fibers into a drum mixing device, and mechanically mixing them at 12 rpm for 20min to obtain a mixture in which Talalay crushed latex particles account for 80% and functional fibers account for the rest. Then, the mixture is filled into a fabric woven from polyester fibers to obtain a latex particle pillow core with a filling compactness of 50D.

[0094] Example 2

[0095] This embodiment is based on the first embodiment, and a latex particle pillow core is prepared, except that the latex used is latex prepared by the Dunlop process.

[0096] Example 3

[0097] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the particle size of the Talalay crushed latex particles is 1.0 cm.

[0098] Example 4

[0099] This embodiment is based on the embodiment 1, and a latex particle pillow core is prepared, except that the particle size of the Talalay crushed latex particles is 2.0 cm.

[0100] Example 5

[0101] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the particle size of the Talalay crushed latex particles is 3.0 cm.

[0102] The latex particle pillow cores prepared in Examples 1-5 were subjected to appearance inspection, durability test and support test according to HG / T 5644-2019. Appearance inspection: Use the naked eye to check the appearance quality of the pillow core to see if there are any protrusions or depressions. Durability test: Through compression and recovery tests simulating 5000 uses, the compression permanent deformation of the pillow core, that is, the ability to return to its original shape, is detected. Support test: Evaluate the compression and ductility of the pillow core. The test results are shown in Table 1.

[0103] Table 1. Latex particle pillow core performance test results

[0104]

[0105] It can be seen from Table 1 that the compression permanent deformation prepared in Examples 1, 3 and 4 is within 3.8-5.1%, that is, after multiple compressions and recovery, they can still be restored to a state similar to the initial state, and have good durability.

[0106] Embodiment 2 uses Dunlop latex, and is different from the physical foaming of Talalay latex of the present invention, and Dunlop latex adds chemical foaming agent.Talalay physical foaming utilizes the principle of vacuumized foaming, and latex fully foams in a sealed mold, and each part foams uniformly, and bubbles rarely occur.Dunlop chemical foaming is due to foaming first, and there is a corner gap after injecting the mold, and air bubbles of different sizes are easily formed inside the product in addition.The latex with bubbles, elasticity and air permeability are not as good as Talalay latex of the present invention, and the pore structure inside the Talalay crushed latex particles itself just has good air permeability, plus the gap between particles, is used as the filling material of pillow core, and air permeability will be better.

[0107] Example 5 uses Talalay crushed latex particles with a particle size of 3.0 cm. The particle size is too large, resulting in four protrusions on the surface of the latex product, which cannot provide uniform support.

[0108] Example 6

[0109] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that no functional fiber is mixed.

[0110] Example 7

[0111] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that functional fibers with a diameter of 50 μm and a length of 12 mm are used.

[0112] Example 8

[0113] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that a functional fiber with a diameter of 80 μm and a length of 6 mm is used.

[0114] Example 9

[0115] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the functional fibers are not treated with a dispersant and an antistatic agent before mixing.

[0116] Example 10

[0117] This embodiment is based on the first embodiment, and a latex particle pillow core is prepared, but the difference is that the fiber carrier of the functional fiber is viscose fiber.

[0118] Embodiment 11

[0119] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the fiber carrier of the functional fiber is nylon fiber.

[0120] The latex particle pillow cores prepared in Examples 6-11 were subjected to external durability tests and support tests according to HG / T 5644-2019. The test results are shown in Table 2.

[0121] Table 2. Latex particle pillow core performance test results

[0122]

[0123] It can be seen from Table 2 above that Example 6 does not mix functional fibers into the latex particles, and its durability is insufficient because after long-term use, the Talalay crushed latex particles in the pillow core age and the resilience weakens. The functional fibers used in Examples 7 and 8 are smaller in diameter and length, and cannot form an effective connection and support between the Talalay crushed latex particles, resulting in slightly weaker durability and support of the pillow core. The functional fibers in Example 9 agglomerate during mixing, resulting in different elasticity in various parts of the pillow core and large degree of permanent compression deformation in some locations. Example 10 uses nylon fibers. Nylon is the strongest and most wear-resistant of existing synthetic fibers, and has greater elasticity and insufficient comfort. As a pillow core, it has too much elasticity. Example 11 uses viscose fibers, which have lower strength than polyester fibers, and the durability and support of the pillow core are insufficient.

[0124] Example 12

[0125] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the filling compactness is 45D.

[0126] Example 13

[0127] This embodiment is based on the embodiment 1, and a latex particle pillow core is prepared, the difference being that the filling compactness is 55D.

[0128] Embodiment 14

[0129] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the filling compactness is 40D.

[0130] Embodiment 15

[0131] This embodiment is based on the first embodiment to prepare a latex particle pillow core, the difference being that the filling compactness is 65D.

[0132] Example 16

[0133] This embodiment is based on the embodiment 1, and a latex particle pillow core is prepared, the difference being that the filling compactness is 75D.

[0134] The latex particle pillow cores prepared in Examples 12-16 were subjected to external durability tests and support tests according to HG / T 5644-2019. The test results are shown in Table 3.

[0135] Table 3. Latex particle pillow core performance test results

[0136]

[0137] As shown in Table 3 above, the pillow cores prepared in Examples 12 and 13 have good durability and support, that is, the durability and support are optimal when the filling compactness is within the range of 45D-55D. As the filling compactness decreases to 40D, the durability and support decrease, as shown in Example 14. As shown in Examples 15 and 16, as the filling compactness increases to 65D and 75D, the durability increases. However, due to the increase in filling compactness, the pillow core becomes too hard and the elasticity is too strong, resulting in poor comfort of the pillow core.

[0138] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A method for preparing a multifunctional fiber composite natural Talalay latex product, characterized in that: The following steps are involved: S1. Preparation of Talalay latex using Talalay process; The Talalay latex comprises, by weight: 100 parts of natural latex, 1-5 parts of dispersant, 3-8 parts of vulcanizer, 1-5 parts of vulcanization accelerator, and 1-5 parts of antioxidant; S2, crushing the Talalay latex to form Talalay crushed latex particles with a particle size of 1-2 cm; S3, mixing the Talalay crushed latex particles with functional fibers, and filling the mixture into fabrics as fillers to prepare multifunctional fiber composite natural Talalay crushed latex products; The functional fiber has a diameter of 70-100 μm and a length of 9-15 mm. The functional fiber is formed by mixing functional nanoparticles and fiber carriers through spinning and weaving, and the fiber carrier is polyester fiber.

2. The method for preparing a multifunctional fiber composite natural Talalay latex product according to claim 1, characterized in that: In S1, the process of foaming Talalay latex comprises: S11, mixing natural latex with functional additives to form composite latex; S12, quantitatively injecting the mixed latex into the mold, performing vacuum foaming and freezing gel; S13, heating the mold to 100-120°C, vulcanizing the latex, and finally demoulding.

3. The method for preparing a multifunctional fiber composite natural Talalay latex product according to claim 1, characterized in that: In S2, multi-stage screening is used to control the particle size difference of Talalay crushed latex particles within 0.3 cm.

4. The method for preparing a multifunctional fiber composite natural Talalay latex product according to claim 1, characterized in that: The functional nanoparticles include at least one of graphene, negative ion powder, far infrared powder, antibacterial and anti-mite powder, formaldehyde removal powder, odor removal powder, anti-allergic or carrier particles loaded with traditional Chinese medicine antiviral ingredients.

5. The method for preparing a multifunctional fiber composite natural Talalay latex product according to claim 1, characterized in that: The mixing process in S3 includes: S31, treating the functional fiber with a dispersant and an antistatic agent, and drying the Talalay crushed latex particles and the functional fiber for 5-15 minutes; S32. Load Talalay crushed latex particles and functional fibers into a drum mixing device, and perform mechanical mixing at 10-15 rpm for 10-30 min to obtain a mixture; in the mixture, the crushed latex particles account for 60-90%, and the functional fibers occupy the rest.

6. An application of the multifunctional fiber composite natural Talalay latex product according to claim 1, characterized in that: The multifunctional fiber composite natural Talalay crushed latex product is used as a pillow core raw material to prepare a pillow.

7. The use of the multifunctional fiber composite natural Talalay latex product according to claim 6, characterized in that: The filling compactness of the multifunctional fiber composite natural Talalay crushed latex product is 45D-55D.

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