Non-woven fabric with two-sided three-dimensional grains, preparation method thereof and fabric

Abstract

The invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric with double-sided three-dimensional grains, a preparation method of the non-woven fabric and a fabric. The invention discloses a non-woven fabric with double-sided three-dimensional grains, which is characterized in that spunlace treatment is performed on a pre-needled non-woven fabric; during spunlace treatment, a special-shaped needle plate is used for spunlace treatment; the special-shaped needle plate is arranged in the spunlace head; a spunlace processing area and a non-spunlace processing area are arranged on the special-shaped needle plate; the spunlace processing area sprays a water needle sprayed by the spunlace head onto a pre-spunlace non-woven fabric; and no water jet flows pass through the non-spunlace processing area. According to the preparation method disclosed by the invention, during spunlace treatment, a special-shaped needle plate is used for spunlace treatment; the special-shaped needle plate is arranged in the spunlace head; a spunlace processing area and a non-spunlace processing area are arranged on the special-shaped needle plate, so that the spunlace non-woven fabric can generate double-sided lines, the three-dimensional effect of the lines is better, the thickness of the spunlace non-woven fabric is better than that of single-sided lines in a conventional process, and the spunlace non-woven fabric is fluffy and soft in hand feeling.

Description

Technical Field

[0001] The invention relates to the technical field of non-woven fabrics, in particular to non-woven fabrics with double-sided three-dimensional patterns and a preparation method and fabric thereof. Background Art

[0002] Non-woven fabric is a kind of non-woven fabric, which is made of fibers connected to each other by entanglement, friction, tearing, melting and other methods, and can be toughened and bonded by mechanical, hot melt or chemical methods. Non-woven fabric has the characteristics of softness, breathability and durability, and is widely used in many fields such as medical, health, packaging, home, agriculture, etc.

[0003] In the textile industry, the production of spunlace nonwovens is a complex and delicate process that relies on the synergy of multiple key links, among which the structural design of the spunlace needle plate and the setting of spunlace process parameters are particularly critical. The reason why conventional spunlace processing is difficult to achieve double-sided three-dimensional textures is mainly due to the following technical limitations:

[0004] 1. Needle plate structure design

[0005] The needle board is the core component in the spunlace process. The size, distribution and density of its micropores directly determine how the water needles penetrate the non-woven fiber layer, which in turn affects the texture and performance of the final product. In the conventional spunlace process, uniformly distributed needle boards are widely used.

[0006] (1) Evenly distributed pinholes: The micropores of conventional pin plates are usually evenly distributed. This design makes it easier for the water needle to evenly penetrate the non-woven fiber layer. However, this uniformity also leads to the uniformity of the pattern formation. When the water needle penetrates the non-woven fabric, the impact force on both sides of the non-woven fabric is basically the same due to the even distribution of the pinholes, so it is difficult to form a significant three-dimensional effect or different patterns on both sides.

[0007] (2) Fixed position: Conventional needle plates are often fixed on the rotating drum below the water jet head. As the drum rotates, the water needles continuously penetrate the nonwoven fabric through the needle holes. This fixed position design limits the needle plate’s flexible control of the fiber layer during processing, making it difficult to achieve differentiated processing of double-sided patterns.

[0008] 2. Fiber entanglement mechanism

[0009] The core of the spunlace process is to use high-pressure water needles to entangle the fibers in the non-woven fabric to form a stable structure. However, in conventional processes, due to the limitations of the needle plate structure and process parameters, the fiber entanglement mechanism often presents a single and uniform structure.

[0010] (1) Single entanglement mode: In conventional processes, when the water needle penetrates the nonwoven fabric, the fiber entanglement mode mainly depends on the impact force of the water needle and the friction between the fibers. Since the needle holes are evenly distributed and the water entanglement parameters are set consistently, the fiber entanglement mode is relatively single, making it difficult to form complex double-sided patterns.

[0011] (2) Uniform entanglement effect: Due to the uniformity of water jet pressure and speed, the fiber entanglement effect on both sides of the non-woven fabric is basically the same. This makes the non-woven fabric present a similar appearance and performance on both sides, making it difficult to form a significant three-dimensional effect and differentiated texture.

[0012] Therefore, the conventional patterns of current spunlace nonwoven fabrics are made by pre-setting a nickel or plastic texture roller / net on the spunlace drum. If the spunlace does not penetrate the nonwoven fabric, the side close to the drum will not produce the corresponding pattern, and can only be a plain weave. If the spunlace penetrates the nonwoven fabric, a mesh pattern will be formed. There are two effects of spunlace nonwoven patterns. One can only form a single-sided effect, such as pearl pattern, with one side raised and the other side plain. The other is a perforated type, with obvious patterns on the front and blurred patterns on the back, and a poor hand feel and low thickness, such as mesh nonwoven fabrics. It can be seen that the conventional process cannot achieve the effect of double-sided three-dimensional patterns on spunlace nonwoven fabrics.

[0013] To this end, the present application provides a non-woven fabric with double-sided three-dimensional patterns, a preparation method thereof, and a fabric. Summary of the invention

[0014] The present application provides a non-woven fabric with double-sided three-dimensional patterns, a preparation method and fabric thereof. When the hydroentanglement treatment is carried out, a special-shaped needle plate is used; the special-shaped needle plate is arranged in the hydroentanglement head; the special-shaped needle plate is provided with a hydroentanglement processing area and a non-hydroentanglement processing area, so that the hydroentanglement non-woven fabric can generate double-sided patterns and the three-dimensional effect of the patterns is better. The thickness of the hydroentanglement non-woven fabric is better than that of the single-sided patterns of the conventional process, and the hand feel is fluffy and soft.

[0015] The technical solution adopted by this application to solve its technical problem is:

[0016] In a first aspect, the present application provides a non-woven fabric with a three-dimensional pattern on both sides, wherein the pre-punctured non-woven fabric is subjected to a spunlace treatment;

[0017] The hydroentanglement treatment is performed using a special-shaped needle plate; the special-shaped needle plate is arranged in the hydroentanglement head; the special-shaped needle plate is provided with a hydroentanglement processing area and a non-hydroentanglement processing area;

[0018] The spunlace processing area sprays the water needles sprayed by the spunlace head onto the pre-spunlace non-woven fabric; and no water jets pass through the non-spunlace processing area.

[0019] In some specific embodiments, during the hydroentanglement treatment, the hydroentanglement pressure is (150-300)*10 5Pa, the water spunlace speed is 150-200m / min.

[0020] In some specific embodiments, the double-sided three-dimensional textured non-woven fabric has textures on both sides; the thickness of the double-sided three-dimensional textured non-woven fabric is 0.5-2 mm, and the fuzzing level of the double-sided three-dimensional textured non-woven fabric is 2-4.

[0021] In some specific embodiments, the width of the special-shaped needle plate is 1 to 5 cm, and the length is consistent with the length of the water jet head;

[0022] The spunlace processing area is provided with a plurality of spunlace needle hole groups, and the spacing between the spunlace needle hole groups is 2-3 mm; the aperture of the spunlace needle holes in the spunlace processing area is 0.1-0.2 mm.

[0023] In some specific embodiments, the spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

[0024] In some specific embodiments, the mesh structure obtained after the combing and laying treatments is subjected to the pre-punching treatment to obtain a pre-punched nonwoven fabric; the pre-punching speed during the pre-punching treatment is 80 to 120 m / min, and the pre-punching pressure is (12 to 100)*10 5 Pa.

[0025] In some specific embodiments, during the combing process, the feed weight is 60-200 gsm, the combing speed is 400-500 m / min, the web laying speed is 100-150 m / min, and the output speed is 100-140 m / min.

[0026] In some specific embodiments, after the hydroentanglement treatment is completed, the hydroentangled nonwoven fabric is debleached and dried, and the drying temperature is 120-140°C.

[0027] In a second aspect, the present application provides a method for preparing a non-woven fabric with double-sided three-dimensional patterns, comprising the following steps:

[0028] A web structure obtained after carding and web laying;

[0029] Performing a pre-puncture treatment on the mesh structure to obtain a pre-punctured non-woven fabric;

[0030] Performing a spunlace treatment on the pre-spunlace nonwoven fabric to obtain a spunlace nonwoven fabric;

[0031] De-bleaching and drying the spunlace non-woven fabric to obtain a non-woven fabric with three-dimensional patterns on both sides;

[0032] The hydroentanglement treatment is carried out using a special-shaped needle plate; the special-shaped needle plate is arranged in the hydroentanglement head; the special-shaped needle plate is provided with a hydroentanglement processing area and a non-hydroentanglement processing area; the hydroentanglement processing area sprays the water needles sprayed by the hydroentanglement head onto the pre-punctured non-woven fabric; and no water jet passes through the non-hydroentanglement processing area.

[0033] In a third aspect, the present application provides fabrics, including the above-mentioned non-woven fabrics.

[0034] The beneficial effects of this application are:

[0035] 1. The preparation method described in this application distinguishes the spunlace processing area and the non-spunlace processing area by designing a special-shaped needle plate; in the spunlace processing area, high-pressure water needles are ejected through micropores to strongly entangle the fibers to form a compact area; while in the non-spunlace processing area, no water jets pass through, and the fibers remain fluffy to form a fluffy area. By adjusting the micropore distribution, density and spunlace pressure on the needle plate, the distribution and morphology of the compact area and the fluffy area can be accurately controlled, thereby forming clear and symmetrical three-dimensional patterns on both the front and back sides of the non-woven fabric.

[0036] 2. The double-sided three-dimensional non-woven fabric described in the present application has a thickness of 0.5-2 mm and a raising grade of 2-4, and has an obvious three-dimensional effect of the texture and a fluffy and soft feel. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0038] Figure 1 This is a product morphology diagram of the non-woven fabric with double-sided three-dimensional patterns described in this application;

[0039] Figure 2 This is a product morphology diagram of the nonwoven fabric prepared in Comparative Example 5 of the present application;

[0040] Figure 3 This is a schematic diagram of the structure of the conventional needle plate described in this application;

[0041] Figure 4 This is a schematic diagram of the structure of the special-shaped needle plate described in this application;

[0042] Figure 5 This is a schematic diagram of the conventional needle plate described in this application when performing water spunlace;

[0043] Figure 6 This is a schematic diagram of the cross-sectional structure of the special-shaped needle plate described in this application. DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments, and the contents mentioned in the implementation modes are not intended to limit the present invention.

[0045] As used herein, "and / or" includes the term of any and all combinations of one or more associated listed items. The terms used herein are only used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a", "an", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It is further understood that "including", when used in this specification, specifies the stated features, integers, steps, operations, elements and / or compositions, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, compositions and / or combinations thereof.

[0046] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs. It is further understood that terms, such as defined in commonly used dictionaries, are interpreted in accordance with their meanings in the context of the relevant art and are not in an idealized or overly formal sense unless explicitly so defined herein.

[0047] The exemplary invention described herein may appropriately lack any one or more element limitations that are not specifically disclosed herein. Therefore, the terms "comprise", "include", "contain", etc. should be understood broadly and non-restrictively. In addition, the terminology used herein is used as a description, not a limitation, and it is unintentional to use these terminology expressions that do not include any equivalent characteristics, but only describe some of their characteristics, but various modifications are possible within the scope of the present invention according to the rights. Therefore, although the present invention has been specifically disclosed by preferred embodiments and optional features, the modifications disclosed herein to embody the changes of the present invention may be recorded by those skilled in the art, and such modifications and changes will be considered to be within the scope of the present invention.

[0048] In the present application, a pre-punctured non-woven fabric is obtained by pre-puncturing, and the steps for preparing the pre-punctured non-woven fabric are: cotton→opening the bag→cleaning the cotton→mixing→combing→laying the net→pre-puncturing, to obtain the pre-punctured non-woven fabric;

[0049] Specifically, the unpacking process is to loosen the cotton in the whole pack; the cleaning process is to clean the cotton seed shells, three fibers and other impurities on the raw cotton; the mixing process is to mix the fibers after cleaning;

[0050] The combing process is as follows: the cleaned cotton fibers are fed into a combing machine to comb the aggregated fiber clumps into single fibers; during the combing process, the feed weight is 60-200gsm and the combing speed is 400-500m / min;

[0051] The web laying process is: randomly scattering and overlapping the combed fibers to form a fluffy mesh structure, the web laying speed is 100-150m / min, and the output speed is 100-140m / min.

[0052] Therefore, after the above-mentioned carding process and web laying process, a double-sided structure is obtained.

[0053] The double-sided structure is then pre-punched to obtain a pre-punched non-woven fabric. During the pre-punching process, the original dry fiber web in the double-sided structure is pre-treated to a wet state, and a certain water pressure is applied to initially form a non-woven fabric, and the linting and linting of the fabric surface are greatly reduced. The pre-punching speed during the pre-punching process is 80-120m / min, and the pre-punching pressure is (12-100)*10 5 Pa.

[0054] It can be understood that in the conventional process, the double-sided structure is subjected to conventional pre-spinning treatment, conventional spunlace treatment, debleaching and drying to obtain a spunlace nonwoven fabric, which has only a single-sided texture effect and is in a compact state;

[0055] like Figure 2 , 3 As shown in Figure 5, in the prior art rotary drum spunlacing reinforcement process, the spunlacing heads are arranged in a circle along the rotary drum, the fiber web is adsorbed on the rotary drum, and receives the water jets sprayed by the spunlacing heads; the spunlacing needle plate is set on the rotary drum, and the water jets sprayed by the spunlacing heads are sprayed onto the fiber web and then hit onto the spunlacing needle plate. At this time, the corresponding small holes of the spunlacing needle plate are pierced by high-pressure water needles to form textures. The fiber web on one side close to the rotary drum has no protruding textures, and the fiber web on the other side (away from the rotary drum) has textures. For example, for pearl-patterned nonwoven fabrics, the side with protruding pearl patterns is the side away from the rotary drum, and the other side with plain textures is close to the rotary drum.

[0056] The conventional needle board size is 200cm-400cm in width, which is the working width of the spunlace. The length of the conventional needle board is the circumference of the spunlace drum, which is generally 100cm-200cm.

[0057] In order to solve the problem that conventional processes cannot produce spunlace nonwoven fabrics with double-sided texture effects, the present application provides a method for producing a double-sided three-dimensional textured nonwoven fabric, comprising the following steps:

[0058] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0059] S2. The spunlace nonwoven fabric is debleached and dried to obtain a nonwoven fabric with a double-sided three-dimensional pattern;

[0060] In step S2, the fluffy mesh pre-punctured non-woven fabric is subjected to hydroentanglement, in which a plurality of high-pressure water needles penetrate the fiber web so that the disordered fibers are mutually embraced to play a reinforcing role; the hydroentanglement pressure is combined with the special-shaped needle plate to form a double-sided pattern;

[0061] Specifically, during the hydroentanglement treatment, Figure 4 , 6As shown, a special-shaped needle plate is used; the special-shaped needle plate is arranged in a spunlace head; a spunlace processing area and a non-spunlace processing area are arranged on the special-shaped needle plate; the spunlace processing area sprays the water needles sprayed from the spunlace head onto the pre-punched non-woven fabric; and no water jet passes through the non-spunlace processing area.

[0062] It is understandable that during the hydroentanglement process, multiple high-pressure water needles are ejected through the hydroentanglement needle holes on the hydroentanglement processing area of ​​the special-shaped needle plate and penetrate the non-woven fiber layer. The force of the high-pressure water needles causes the fibers to entangle with each other and form a compact area, and then a compact area can also be formed on the pre-punctured non-woven fabric on the other side away from the special-shaped needle plate; at the same time, the flushing effect of the water flow during the hydroentanglement process also helps to remove impurities and loose fibers between the fibers. In the non-hydroentanglement processing area, since there is no water jet passing through, the fibers remain fluffy, forming a fluffy area.

[0063] Specifically, the width of the special-shaped needle plate is 1 to 5 cm, and the length is consistent with the length of the thorn head; the thorn processing area is distributed with a plurality of thorn needle hole groups, and the spacing between the thorn needle hole groups is 2-3 mm; the aperture of the thorn needle holes in the thorn processing area is 0.1-0.2 mm.

[0064] Specifically, the spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals. The specific interval arrangement can be limited according to the shape and number of stripes.

[0065] Specifically, during the hydroentanglement treatment, the hydroentanglement pressure is (150-300)*10 5 Pa, the water spunlace speed is 150-200m / min.

[0066] In step S4, the non-woven fabric after spunlace is subjected to a de-bleaching treatment to remove impurities on the non-woven fabric and cotton wax pectin on the cotton fibers. The de-bleached fabric has a high water content and needs to be dried at a temperature of 120-140°C.

[0067] like Figure 1 As shown, the non-woven fabric with double-sided three-dimensional texture prepared by the above preparation method has a thickness of 0.5-2mm, the thickness of the front texture is 1-2mm (the side close to the special-shaped needle plate), and the back texture is 0.5-1mm (the side away from the special-shaped needle plate). The front and back textures are obvious, showing a double-sided three-dimensional texture effect. The non-woven fabric with double-sided three-dimensional texture has a raising grade of 2-4 and feels fluffy and soft.

[0068] Preparation Example 1

[0069] The preparation of the pre-punctured nonwoven fabric comprises the following steps:

[0070] Cotton→opening bales→cleaning→mixing→combing→laying nets→pre-puncturing,

[0071] Among them: during the carding process, the feed weight is 60gsm and the carding speed is 400m / min;

[0072] During the web laying process, the web laying speed is 100m / min and the output speed is 100m / min;

[0073] The pre-puncture speed is 80m / min and the pre-puncture pressure is 12*10 5 Pa.

[0074] The pre-punched nonwoven fabric was used in Examples 1-5 and Comparative Examples 1-5.

[0075] Example 1

[0076] The method for preparing a non-woven fabric with double-sided three-dimensional patterns comprises the following steps:

[0077] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0078] The special-shaped needle plate is arranged in the spunlacing head; the special-shaped needle plate is provided with a spunlacing processing area and a non-spunlacing processing area; the spunlacing processing area sprays the water needles sprayed by the spunlacing head onto the pre-spunlaced non-woven fabric; and the non-spunlacing processing area has no water jets passing through;

[0079] The width of the special-shaped needle plate is 1 to 5 cm, and the length is consistent with the length of the spunlace head; the spunlace processing area is distributed with a plurality of spunlace needle hole groups, and the spacing between the spunlace needle hole groups is 2.5 mm; the diameter of the spunlace needle holes in the spunlace processing area is 0.1 mm. The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

[0080] The water jet pressure of the water jet head is 300*10 5 Pa, the spunlace speed is 200 m / min, and the spunlace distance is 3 cm.

[0081] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 130° C. After drying, a nonwoven fabric with double-sided three-dimensional patterns is obtained.

[0082] Example 2

[0083] The method for preparing a non-woven fabric with double-sided three-dimensional patterns comprises the following steps:

[0084] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0085] The special-shaped needle plate is arranged in the spunlacing head; the special-shaped needle plate is provided with a spunlacing processing area and a non-spunlacing processing area; the spunlacing processing area sprays the water needles sprayed by the spunlacing head onto the pre-spunlaced non-woven fabric; and the non-spunlacing processing area has no water jets passing through;

[0086] The width of the special-shaped needle plate is 1 to 5 cm, and the length is the same as the length of the spunlace head; a plurality of spunlace needle hole groups are distributed in the spunlace processing area, and the spacing between the spunlace needle hole groups is 2 mm; the diameter of the spunlace needle holes in the spunlace processing area is 0.1 mm. The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

[0087] The water jet pressure of the water jet head is 240*10 5 Pa, the water spurting speed is 180m / min, and the water spurting distance is 3cm.

[0088] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 130° C. After drying, a nonwoven fabric with double-sided three-dimensional patterns is obtained.

[0089] Example 3

[0090] The method for preparing a non-woven fabric with double-sided three-dimensional patterns comprises the following steps:

[0091] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0092] The special-shaped needle plate is arranged in the spunlacing head; the special-shaped needle plate is provided with a spunlacing processing area and a non-spunlacing processing area; the spunlacing processing area sprays the water needles sprayed by the spunlacing head onto the pre-spunlaced non-woven fabric; and the non-spunlacing processing area has no water jets passing through;

[0093] The width of the special-shaped needle plate is 1 to 5 cm, and the length is consistent with the length of the spunlace head; a plurality of spunlace needle hole groups are distributed in the spunlace processing area, and the spacing between the spunlace needle hole groups is 2.5 mm; the diameter of the spunlace needle holes in the spunlace processing area is 0.1 mm. The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

[0094] The water jet pressure of the water jet head is 150*10 5 Pa, the water jet speed is 150m / min, and the water jet distance is 3cm.

[0095] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 130° C. After drying, a nonwoven fabric with double-sided three-dimensional patterns is obtained.

[0096] Example 4

[0097] The method for preparing a non-woven fabric with double-sided three-dimensional patterns comprises the following steps:

[0098] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0099] The special-shaped needle plate is arranged in the spunlacing head; the special-shaped needle plate is provided with a spunlacing processing area and a non-spunlacing processing area; the spunlacing processing area sprays the water needles sprayed by the spunlacing head onto the pre-spunlaced non-woven fabric; and the non-spunlacing processing area has no water jets passing through;

[0100] The width of the special-shaped needle plate is 1 to 5 cm, and the length is the same as the length of the spunlace head; the spunlace processing area is distributed with several groups of spunlace needle holes, and the spacing between the spunlace needle holes is 2 mm; the diameter of the spunlace needle holes in the spunlace processing area is 0.1 mm. The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are set at intervals. The spunlace pressure of the spunlace head is 180*10 5 Pa, the spunlace speed is 200 m / min, and the spunlace distance is 3 cm.

[0101] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 120° C. After drying, a nonwoven fabric with double-sided three-dimensional patterns is obtained.

[0102] Example 5

[0103] The method for preparing a non-woven fabric with double-sided three-dimensional patterns comprises the following steps:

[0104] S1. The pre-punctured nonwoven fabric is subjected to spunlace treatment to obtain a spunlace nonwoven fabric;

[0105] The special-shaped needle plate is arranged in the spunlacing head; the special-shaped needle plate is provided with a spunlacing processing area and a non-spunlacing processing area; the spunlacing processing area sprays the water needles sprayed by the spunlacing head onto the pre-spunlaced non-woven fabric; and the non-spunlacing processing area has no water jets passing through;

[0106] The width of the special-shaped needle plate is 1 to 5 cm, and the length is consistent with the length of the spunlace head; a plurality of spunlace needle hole groups are distributed in the spunlace processing area, and the spacing between the spunlace needle hole groups is 3 mm; the diameter of the spunlace needle holes in the spunlace processing area is 0.2 mm. The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

[0107] The water jet pressure of the water jet head is 180*10 5 Pa, the spunlace speed is 200 m / min, and the spunlace distance is 3 cm.

[0108] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 140° C. After drying, a nonwoven fabric with double-sided three-dimensional patterns is obtained.

[0109] Comparative Example 1

[0110] The method for preparing nonwoven fabrics, in step S1, the water spunlace pressure is 100*10 5 Pa, water spunlace speed is 100 m / min;

[0111] The remaining conditions are the same as those in Example 1.

[0112] Comparative Example 2

[0113] The method for preparing nonwoven fabrics, in step S1, the water spunlace pressure is 500*10 5 Pa, water spunlace speed is 100 m / min;

[0114] The remaining conditions are the same as those in Example 1.

[0115] Comparative Example 3

[0116] In the method for preparing non-woven fabric, in step S1, the diameter of the spunlace needle holes in the spunlace processing area is 0.4 mm; and the other conditions are the same as those in Example 1.

[0117] Comparative Example 4

[0118] The preparation method of conventional textured nonwoven fabric comprises the following steps:

[0119] S1. The pre-punctured nonwoven fabric is subjected to hydroentanglement treatment to obtain a hydroentangled nonwoven fabric; a conventional hydroentanglement needle plate is used for hydroentanglement treatment, the hydroentanglement needle plate is fixed on a rotating drum below a hydroentanglement head, and the hydroentanglement head is fixed; when the drum rotates, the small holes corresponding to the needle plate on the drum are pierced by high-pressure water needles to form patterns, and stripes are formed on one side of the hydroentangled nonwoven fabric close to the drum.

[0120] The conventional needle board size is 200cm in width and the length is the circumference of the spunlace drum (100cm);

[0121] The water jet pressure of the water jet head is 300*10 5 Pa, the spunlace speed is 200 m / min, and the spunlace distance is 3 cm.

[0122] S2. Debleaching and drying the spunlace nonwoven fabric at a drying temperature of 130° C., and obtaining a nonwoven fabric after drying.

[0123] The nonwoven fabrics obtained after drying in Examples 1-5 and Comparative Examples 1-4 were subjected to the following performance tests, and the relevant results are summarized in Table 1; wherein, the reference standard for the evaluation of the fuzzing grade is GB / T 4802.2-2008 Determination of fabric fuzzing and pilling performance.

[0124] Table 1

[0125]

[0126] The front thickness of the pattern is the protruding thickness of the pre-punctured non-woven fabric when the pre-punctured non-woven fabric faces the puncture head for puncture; the back thickness of the pattern is the protruding thickness of the pre-punctured non-woven fabric when the pre-punctured non-woven fabric faces the puncture head for puncture.

[0127] The raw materials or reagents used in the examples and comparative examples of the present invention are all purchased from mainstream manufacturers in the market. Those without indicating the manufacturer or concentration are all analytically pure raw materials or reagents that can be routinely obtained. As long as they can play the expected role, there is no special limitation.

[0128] The instruments and equipment used in this embodiment are all purchased from major manufacturers in the market, and there is no particular limitation as long as they can play the expected role. In this embodiment, if no specific technology or conditions are specified, the technology or conditions described in the literature in this field or the product instructions are used. The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. Double-sided three-dimensional patterned non-woven fabric, characterized in that: The pre-punctured non-woven fabric is subjected to a hydroentanglement treatment; The hydroentanglement treatment is performed using a special-shaped needle plate; the special-shaped needle plate is arranged in the hydroentanglement head; the special-shaped needle plate is provided with a hydroentanglement processing area and a non-hydroentanglement processing area; The spunlace processing area sprays the water needles sprayed by the spunlace head onto the pre-spunlace non-woven fabric; and no water jets pass through the non-spunlace processing area.

2. The nonwoven fabric according to claim 1, characterized in that During the hydroentanglement treatment, the hydroentanglement pressure is (150-300)*10 5 Pa, the water spunlace speed is 150-200m / min.

3. The nonwoven fabric according to claim 1, characterized in that The double-sided three-dimensional patterned non-woven fabric has double-sided patterns on both sides; the thickness of the double-sided three-dimensional patterned non-woven fabric is 0.5-2 mm, and the fuzzing level of the double-sided three-dimensional patterned non-woven fabric is 2-4.

4. The nonwoven fabric according to claim 1, characterized in that The width of the special-shaped needle plate is 1-5 cm, and the length is consistent with the length of the thorn head; The spunlace processing area is provided with a plurality of spunlace needle hole groups, and the spacing between the spunlace needle hole groups is 2-3 mm; the aperture of the spunlace needle holes in the spunlace processing area is 0.1-0.2 mm.

5. The nonwoven fabric according to claim 1, characterized in that: The spunlace processing area and the non-spunlace processing area on the special-shaped needle plate are arranged at intervals.

6. The nonwoven fabric according to claim 1, characterized in that The net structure obtained after the carding and web laying treatment is subjected to the pre-puncturing treatment to obtain a pre-punctured nonwoven fabric; the pre-puncturing speed during the pre-puncturing treatment is 80 to 120 m / min, and the pre-puncturing pressure is (12 to 100)*10 5 Pa.

7. The nonwoven fabric according to claim 6, characterized in that During the carding treatment, the feeding weight is 60-200 gsm, the carding speed is 400-500 m / min, the web laying speed is 100-150 m / min, and the output speed is 100-140 m / min.

8. The nonwoven fabric according to claim 1, characterized in that After the spunlace treatment is completed, the spunlace nonwoven fabric is debleached and dried, and the drying temperature is 120-140°C.

9. A method for preparing a nonwoven fabric with double-sided three-dimensional patterns, characterized in that: The following steps are involved: A web structure obtained after carding and web laying; Performing a pre-puncture treatment on the mesh structure to obtain a pre-punctured non-woven fabric; Performing a spunlace treatment on the pre-spunlace nonwoven fabric to obtain a spunlace nonwoven fabric; De-bleaching and drying the spunlace non-woven fabric to obtain a non-woven fabric with three-dimensional patterns on both sides; The hydroentanglement treatment is carried out using a special-shaped needle plate; the special-shaped needle plate is arranged in the hydroentanglement head; the special-shaped needle plate is provided with a hydroentanglement processing area and a non-hydroentanglement processing area; the hydroentanglement processing area sprays the water needles sprayed by the hydroentanglement head onto the pre-punctured non-woven fabric; and no water jet passes through the non-hydroentanglement processing area.

10. Fabric, characterized in that, The invention comprises the nonwoven fabric according to any one of claims 1 to 8 or the nonwoven fabric prepared by the preparation method according to claim 9.

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