Pre-oxidized fiber heat insulation non-woven fabric

Abstract

The utility model relates to the technical field of non-woven materials, in particular to a pre-oxidized fiber heat insulation non-woven fabric which is of a composite non-woven fabric structure, a flame-retardant spunlace layer is arranged on one side of the composite non-woven fabric, a pre-oxidized fiber felt layer is arranged on the other side of the composite non-woven fabric, the flame-retardant spunlace layer is of a parallel lapping structure, and the pre-oxidized fiber felt layer is of a cross lapping needled felt structure. The flame-retardant spunlace layer and the pre-oxidized fiber felt layer are connected in an entangled manner, and the coloring layer is printed on the other side of the flame-retardant spunlace layer. According to the flame-retardant and heat-insulating non-woven fabric, the structural characteristics of the needled felt and the spunlace non-woven fabric are utilized, a layered structure is adopted to construct the flame-retardant and heat-insulating non-woven fabric, and the flame-retardant and heat-insulating non-woven fabric has heat-insulating and flame-retardant functions and is fine in grain,

Description

Technical Field

[0001] The utility model relates to the technical field of spunlace nonwoven materials, in particular to a pre-oxidized yarn heat-insulating nonwoven fabric. Background Art

[0002] Polyacrylonitrile pre-oxidized fiber, referred to as pre-oxidized yarn, is the basic material for the production of carbon fiber. It has good flexibility, corrosion resistance, high temperature resistance, and does not spread flame. It is mostly used in the production of high-temperature sealing fillers, fire-proof and flame-proof materials, heat-resistant fabrics and anti-corrosion fillers. The non-woven fabric made of pre-oxidized yarn is also called pre-oxidized yarn felt. It has excellent flame retardancy and high temperature stability. It does not shrink or drop when burning. It has good thermal insulation effect, acid and alkali corrosion resistance, and radiation protection. Pre-oxidized yarn felt can be used for car roofs to achieve thermal insulation effect. However, the pre-oxidized yarn fiber itself is black, which makes the pre-oxidized yarn felt also black. At the same time, the pre-oxidized yarn felt is a needle-punched felt with a rough feel and small pinholes on the surface. Although the pre-oxidized yarn felt has good thermal insulation performance, it is not suitable for use as a car roof. Utility Model Content

[0003] In response to the above-mentioned shortcomings of the existing spunlace non-woven fabrics, the utility model provides a pre-oxidized silk insulation non-woven fabric, which utilizes the structural characteristics of needle-punched felt and spunlace non-woven fabric, and adopts a layered structure to construct a flame-retardant insulation non-woven fabric. It has the functions of heat insulation and flame retardancy, and at the same time has fine texture, can be any color, and has a good appearance.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A pre-oxidized silk thermal insulation non-woven fabric has a composite non-woven fabric structure. One side of the composite non-woven fabric is a flame-retardant spunlace layer, and the other side is a pre-oxidized silk felt layer. The flame-retardant spunlace layer has a parallel-laid structure, and the pre-oxidized silk felt layer has a cross-laid needle-punched structure. The flame-retardant spunlace layer and the pre-oxidized silk felt layer are entangled and connected, and a colored layer is printed on the other side of the flame-retardant spunlace layer.

[0006] In an embodiment of the present application, the flame-retardant spunlace layer is a flame-retardant polyester fiber spunlace fabric layer.

[0007] In an embodiment of the present application, the pre-oxidized silk felt layer and the flame-retardant spunlace layer are connected by entanglement of the flame-retardant polyester fibers and the pre-oxidized silk fibers.

[0008] In an embodiment of the present application, the colored layer is a full-ground printed layer.

[0009] Compared to the prior art, the present invention provides a pre-oxidized fiber thermal insulation nonwoven fabric. This composite nonwoven fabric has a flame-retardant spunlace layer on one side and a pre-oxidized fiber felt layer on the other. The flame-retardant spunlace layer is a parallel-laid structure, while the pre-oxidized fiber felt layer is a cross-laid needle-punched structure. The flame-retardant spunlace layer and the pre-oxidized fiber felt layer are entangled and connected, and a colored layer is printed on the other side of the flame-retardant spunlace layer. This application utilizes the structural characteristics of needle-punched felt and spunlace nonwoven fabrics to construct a flame-retardant thermal insulation nonwoven fabric with a layered structure. This fabric provides both thermal insulation and flame retardancy, while also having a fine texture, the ability to be any color, and a beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of the pre-oxidized fiber thermal insulation non-woven fabric provided by the present invention. DETAILED DESCRIPTION

[0011] The following will clearly and completely describe the technical solution of the present invention through specific implementation methods. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0012] In the description of this application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0013] The present application provides a pre-oxidized silk insulation non-woven fabric, which is a composite non-woven fabric structure. One side of the composite non-woven fabric is a flame-retardant spunlace layer, and the other side is a pre-oxidized silk felt layer. The flame-retardant spunlace layer is a parallel-laid structure, and the pre-oxidized silk felt layer is a cross-laid needle-punched felt structure. The flame-retardant spunlace layer and the pre-oxidized silk felt layer are entangled and connected, and a colored layer is printed on the other side of the flame-retardant spunlace layer.

[0014] The present application adopts a layered structure to construct a non-woven fabric, which has the functions of heat insulation and flame retardancy, and at the same time has fine texture, can be any color, and has a good appearance.

[0015] See also Figure 1 , Figure 1 The layered structure of the pre-oxidized fiber thermal insulation non-woven fabric is schematically shown in the cross-section direction, where 1 is the colored layer, 2 is the flame-retardant spunlace layer, and 3 is the pre-oxidized fiber felt layer.

[0016] The pre-oxidized silk insulation non-woven fabric provided in the present application is a composite non-woven fabric structure. One side of the composite non-woven fabric is a flame-retardant spunlace layer 2, and the other side is a pre-oxidized silk felt layer 3. The flame-retardant spunlace layer 2 is a parallel-laid mesh structure, and the pre-oxidized silk felt layer 3 is a cross-laid needle-punched felt structure. The flame-retardant spunlace layer 2 and the pre-oxidized silk felt layer 3 are entangled and connected, and the other side of the flame-retardant spunlace layer 2 is printed with a colored layer 1.

[0017] The composite non-woven fabric of the present application is compounded in a spunlace machine, and the parallel-laid flame-retardant cotton web and the preoxidized silk felt layer 2 output by the carding machine are overlapped and input into the spunlace machine. Under the action of the high-pressure water column of the spunlace machine, the flame-retardant fibers at the bottom of the flame-retardant cotton web and the preoxidized silk fibers at the top of the preoxidized silk felt are entangled to form an entangled connection between the flame-retardant spunlace layer 2 and the preoxidized silk felt layer 3.

[0018] Spunlace is a common and important nonwoven fabric processing technology. It uses fine, high-pressure water jets to penetrate a web, causing the fibers in the originally loose, weak web to move and entangle with each other, forming a spunlace nonwoven fabric with a defined strength and shape. These products are widely used in the medical and hygiene fields, synthetic leather fabrics, household wipes, and filter materials. Typical products include wet wipes, facial masks, leather fabrics, microfiber wipes, and medical dressings. Spunlace nonwovens have also experienced rapid development due to their inherent chemical-free, environmentally friendly, lint-free, impurity-free, moisture-absorbing, soft, high-strength, and wide range of applications.

[0019] Composite technology combines two or more identical or different materials, as well as two or more methods, to overcome the limitations of single processing techniques and produce products with superior performance and richer functionality. Composite technology is more than a simple addition; it significantly enhances functionality or performance. Spunlace technology offers a wide range of raw materials and the flexibility and versatility of the process itself, providing an excellent foundation for composite production. Spunlace can be combined with a variety of other technologies to create new spunlace composite nonwovens that are soft, absorbent, lint-resistant, strong in both the longitudinal and transverse directions, and versatile. As nonwoven technology continues to advance, more and more technologies are being combined with spunlace to produce new spunlace composite nonwovens.

[0020] In a non-woven fabric production line, web laying is a key step in the manufacturing process, which determines the quality and performance of the product. The main web laying methods of non-woven spunlace production lines include cross-lapping, parallel lapping, multi-layer lapping, etc. These methods have their own characteristics and are suitable for different production needs. During the cross-lapping process, the fiber webs are cross-stacked at a certain angle to form an interwoven structure. This web laying method can increase the strength and stability of the fiber web and improve the tensile and tear resistance of the product. Cross-lapping is suitable for the production of high-strength and high-stability non-woven fabrics. Parallel lapping is a web laying method in which the fiber webs are arranged and stacked in parallel. In this method, the degree of interweaving between the fiber webs is low, but the fibers are arranged neatly and the surface is smooth. In the present application, the flame-retardant spunlace layer 1 is a parallel-lapped structure, and the pre-oxidized silk felt layer 2 is a cross-lapped needle-punched felt structure, so that the fibers of the flame-retardant spunlace layer 1 of the present application are arranged neatly, the surface is smooth, and the appearance is good, which is suitable for use in car roofs.

[0021] In an embodiment of the present application, the flame-retardant spunlace layer 2 is a flame-retardant polyester fiber spunlace fabric layer. Flame-retardant fibers are prepared by adding flame retardants to the fibers. These flame retardants have multiple functions, including absorbing heat, covering, and suffocating non-flammable gases. They can also interfere with the chemical reaction of the flame or increase the ignition temperature of the fuel. Therefore, the flame-retardant fiber is not easy to burn in the presence of a fire source, or it can slowly extinguish itself when burning and can extinguish itself after leaving the fire source. Flame-retardant polyester has a wide range of applications, including protective clothing, household items, decorative items, ready-made clothes and clothing for minors. In addition, it is also used in non-woven fabrics and fillings, such as curtains and bedding for interior decoration, as well as fabrics for special purposes such as flight suits, tents, parachutes, etc. In a preferred embodiment of the present application, the flame-retardant polyester fiber is a flame-retardant polyester fiber produced by Sinopec Yizheng Chemical Fiber Co., Ltd.

[0022] In the embodiments of the present application, the coloring layer 1 is a full-print layer. The flame-retardant spunlace fabric layer of the present application can be colored using a full-print method to achieve full coloring on one side of the flame-retardant spunlace fabric layer, with a coloring effect similar to dyeing. The difference between full-printing and dyeing is that full-printing is single-sided coloring, while dyeing is double-sided coloring. For the present application, full-printing is used to color the lower surface of the ceiling, resulting in a ceiling with both color and fine texture for a good appearance. The coloring layer can be any color, such as light gray, light yellow, etc.

[0023] In the embodiment of the present application, the pre-oxidized yarn felt layer 3 may be the pre-oxidized yarn needle-punched felt produced by Dongguan Zhuofang Industrial Co., Ltd.

[0024] Basis weight refers to the weight of a fabric per square meter, usually expressed in grams per square meter (g / m²) or ounces per square yard (oz / yd²). It is an important indicator of fabric thickness and quality, and is of great significance in the production and selection of textiles.

[0025] In summary, this application utilizes the structural characteristics of needle-punched felt and spunlace non-woven fabric, and adopts a layered structure to construct a flame-retardant and heat-insulating non-woven fabric, which has the functions of heat insulation and flame retardancy, and at the same time has fine texture, can be any color, and has a good appearance.

[0026] In order to better understand the technical content of this application, the following specific examples are provided to further illustrate the spunlace fabric with magnetic function provided by this application. In the following examples, the raw materials used are all commercially available.

[0027] Example 1

[0028] See also Figure 1 As shown, the pre-oxidized silk insulation non-woven fabric is a composite non-woven fabric structure. One side of the composite non-woven fabric is a flame retardant spunlace layer 2, and the other side is a pre-oxidized silk felt layer 3. The unit area mass of the flame retardant spunlace layer 2 is 60g / m² of polyester flame retardant fiber spunlace fabric, the flame retardant spunlace layer 2 is a parallel-laid structure, the unit area mass of the pre-oxidized silk felt layer 3 is 200g / m² of pre-oxidized silk needle-punched felt, the pre-oxidized silk felt layer 3 is a cross-laid needle-punched felt structure, the flame retardant spunlace layer 2 and the pre-oxidized silk felt layer 3 are entangled and connected, and the other side of the flame retardant spunlace layer 2 is printed with a light yellow colored layer 1 by a full-ground printing method.

[0029] The thermal conductivity is 0.021W / (m ▪K) and is tested using GB / T 10295 Thermal insulation materials - Determination of steady-state thermal resistance and related properties - Heat flow meter method. This indicates good thermal insulation performance.

[0030] The non-woven fabric of the present embodiment has the functions of heat insulation and flame retardancy, and has fine texture, can be of any color, and has a good appearance.

[0031] As can be seen from the above examples, the pre-oxidized fiber thermal insulation non-woven fabric of this application is a composite non-woven fabric structure, with a flame-retardant spunlace layer 2 on one side and a pre-oxidized fiber felt layer 3 on the other side. The flame-retardant spunlace layer 2 has a parallel-laid structure, while the pre-oxidized fiber felt layer 3 has a cross-laid needle-punched structure. The flame-retardant spunlace layer 2 and the pre-oxidized fiber felt layer 3 are entangled and connected, and a colored layer 1 is printed on the other side of the flame-retardant spunlace layer 2. This application utilizes the structural characteristics of needle-punched felt and spunlace non-woven fabrics to construct a flame-retardant thermal insulation non-woven fabric with a layered structure. It has thermal insulation and flame retardancy functions, while also having fine texture, can be any color, and has an excellent appearance.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0034] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pre-oxidized fiber thermal insulation non-woven fabric, characterized in that: It is a composite non-woven fabric structure, one side of the composite non-woven fabric is a flame retardant spunlace layer, and the other side is a pre-oxidized silk felt layer. The flame retardant spunlace layer is a parallel-laid structure, and the pre-oxidized silk felt layer is a cross-laid needle-punched felt structure. The flame retardant spunlace layer and the pre-oxidized silk felt layer are entangled and connected, and a colored layer is printed on the other side of the flame retardant spunlace layer.

2. The pre-oxidized fiber thermal insulation non-woven fabric according to claim 1, characterized in that: The flame retardant spunlace layer is a flame retardant polyester fiber spunlace fabric layer.

3. The pre-oxidized fiber thermal insulation non-woven fabric according to claim 1, characterized in that: The preoxidized silk felt layer and the flame-retardant spunlace layer are connected by entanglement of flame-retardant polyester fibers and preoxidized silk fibers.

4. The pre-oxidized fiber thermal insulation non-woven fabric according to claim 1, characterized in that: The colored layer is a full-ground printing layer.

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