Cold-proof, heat-insulation, heat-preservation and waterproof cloth and preparation process thereof

Abstract

The invention discloses a cold-proof, heat-insulating, heat-preserving and waterproof fabric and a preparation process thereof, belongs to the technical field of textiles, and solves the problems that the current fabric needs to be cold-proof, heat-insulating, warm-keeping and waterproof at the same time and is very difficult to be light in weight. Comprising a cloth cover, a plurality of bumps distributed in an array are woven on the two sides of the cloth cover, the cloth cover is formed by weaving air fibers, the air fibers comprise a plurality of nodes and a plurality of branch fibers integrally formed between the adjacent nodes, and micro spaces are formed between the branch fibers in the same group between the adjacent nodes. And the volume of the micro space is smaller than that of a single branch fiber between adjacent nodes. According to the cold-proof heat-insulation heat-preservation waterproof cloth, the innovative air fiber weaving technology is adopted, and the light, thin, heat-preservation, heat-insulation and waterproof effects are achieved through micro-space and node design.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, and in particular to a cold-proof, heat-insulating, thermal-retaining and waterproof fabric and a preparation process thereof. Background Art

[0002] The cold-proof, heat-insulating, thermal-retaining and waterproof functions of fabrics are important considerations in the design of clothing and household items. Cold-proof fabrics usually use high-density fibers and multi-layer structures to effectively isolate cold air and keep the body warm. Thermal insulation fabrics use special coatings or fiber structures to reduce heat transfer and keep the temperature of the room or the wearer stable. Thermal insulation fabrics reduce heat loss by locking the air layer and provide long-lasting warmth. Waterproof fabrics use coating or film technology to form a waterproof barrier to prevent moisture penetration and keep dry and comfortable. These functions are not only widely used in outdoor clothing, but also used to make outdoor equipment such as tents and sleeping bags, as well as daily necessities such as home curtains and sofas, to improve the comfort and convenience of life.

[0003] At present, if the fabric needs to meet the functions of cold protection, heat insulation, warmth retention, and waterproofing at the same time, it is basically necessary to stack the thickness of the fabric and add a thermal insulation layer in the thickness direction. This thermal insulation layer is either provided by a coating or a thick fabric layer. If waterproof performance is required, it is necessary to add a waterproof coating or a waterproof membrane to the fabric to reflect this function. Under normal circumstances, without adding a waterproof coating or a waterproof membrane, the fabric needs to have both waterproof performance. In this case, the fabric is required to use water-repellent fibers when weaving, and to weave with an extremely high weaving density so that water cannot directly pass through the pores formed by the weaving through the fabric. However, in this way, water will still adhere to the surface of the fabric. If there is a fabric with a certain degree of water absorption on the other side of the fabric, then the fabric will absorb moisture, so that the moisture attached to the surface of the fabric is forced to penetrate and then be absorbed by the absorbent fabric.

[0004] Therefore, the current fabrics need to be cold-proof, heat-insulating, warm-keeping, and waterproof at the same time, and also need to be light in texture, which is very difficult. Therefore, a cold-proof, heat-insulating, and waterproof fabric and a preparation process thereof are proposed to solve or alleviate the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cold-proof, heat-insulating, thermal-insulating and waterproof fabric and a preparation process thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A cold-proof, heat-insulating, and waterproof fabric comprises a fabric surface, both sides of which are woven into a plurality of array-distributed bulges, the fabric surface being woven by air fibers, the air fibers comprising a plurality of nodes and a plurality of branch fibers integrally formed between adjacent nodes, a microspace being formed between the same group of branch fibers between adjacent nodes, and the volume of the microspace being smaller than the volume of a single branch fiber between adjacent nodes.

[0007] Preferably, the air fiber is made of water-repellent chemical fiber.

[0008] The present invention also provides a process for preparing cold-proof, heat-insulating, and waterproof fabric, which is used to produce the cold-proof, heat-insulating, and waterproof fabric, and comprises the following steps: Step 1: mixing chemical fiber raw material particles and feeding them into an extruder; Step 2: The extruder extrude the nascent fiber, and the nascent fiber leaves through the special-shaped spinneret, and the front nozzle in the special-shaped spinneret is stationary, and the rear nozzle in the special-shaped spinneret performs a reciprocating angle deflection motion relative to the front nozzle in the special-shaped spinneret, so that the nascent fiber is twisted to form a plurality of nodes, and the nascent air fiber is obtained; Step 3, the nascent air fiber is rolled up after passing through a cooling channel to obtain an air fiber roll; Step 4: feeding the air fiber into a loom and weaving the air fiber into a cold-proof, heat-insulating, and waterproof fabric.

[0009] Preferably, in step three, when the rear nozzle in the special-shaped spinneret undergoes a single reciprocating angle deflection motion, the feed speed of the front spinneret in the special-shaped spinneret decreases during the forward deflection of the rear nozzle in the special-shaped spinneret, and the feed speed of the front spinneret in the special-shaped spinneret returns to normal during the reverse deflection of the rear nozzle in the special-shaped spinneret.

[0010] Preferably, the special-shaped spinneret includes a front nozzle and a rear nozzle rotatably connected thereto, the front nozzle is connected to a connecting pipe connected to an extruder, an embedded ring is fixedly connected to the outer peripheral wall of the connecting pipe, an embedded groove for accommodating the connecting pipe is provided on the inner peripheral wall of the connecting point between the rear nozzle and the connecting pipe, an annular groove for accommodating the embedded ring is provided on the inner ring of the embedded groove, and the annular groove is sealingly connected to the embedded ring.

[0011] Preferably, a circle of teeth is provided on the outer peripheral wall of the rear nozzle, and the front nozzle is expanded outwardly toward one end of the connecting pipe to form a plurality of connecting pieces, and the connecting pieces are used to connect with the extruder.

[0012] Preferably, a plurality of spinneret holes distributed in a circular array are provided on a side of the rear nozzle away from the front nozzle, and a baffle for closing the spinneret holes is rotatably connected to the rear nozzle via a rotating shaft arranged perpendicular to the end surface of the rear nozzle.

[0013] Preferably, the spinneret hole is spiral-shaped, and the inner diameter of the spinneret hole is greater than the pitch thereof.

[0014] The present invention has the following beneficial effects: The invention relates to cold-proof, heat-insulating, thermal-insulating and waterproof fabrics, the core of which is the use of innovative air fiber preparation technology. The air fiber is made by a unique processing method, and its structure is similar to that of a network yarn, but with significant differences. Traditional network yarns are formed by air jetting, and their nodes are the entanglement between fibers, lacking the true one-piece molding characteristics. Such fibers need to go through multiple processes to form network yarns, while the air fiber of the invention is a complete structure with better integrity and stability, avoiding the problem of breakage during the spinning process.

[0015] The branches between the nodes of the air fiber can form micro spaces, which are very small but crucial. They form dense bulges on the surface of the fabric made of air fiber, which can not only keep the air in the micro spaces relatively still, but also effectively isolate the heat transfer on both sides of the fabric. In addition, the length of the node is designed to be smaller than the length of the micro space, which ensures the structural strength of the air fiber and prevents it from spreading.

[0016] During the weaving process, the air fibers are interwoven at the nodes, which keeps the fabric light and thin. At the same time, the bulge formed by the four groups of branch fibers partially thickens the fabric and keeps it fluffy. This design not only enhances the thermal insulation effect of the fabric, but also ensures the tight interweaving of its structure. The four groups of branch fibers in the bulge are randomly interwoven during the weaving process, forming a messy and irregular space, which can form a water film when encountering moisture, further blocking the penetration of air and moisture, thereby achieving a waterproof effect.

[0017] To sum up, this fabric is not only light in texture, but also has multiple functions of keeping out cold, keeping warm, insulating and waterproof. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the air fiber in the present invention; Figure 3 It is a flowchart of the present invention; Figure 4It is a structural schematic diagram of the special-shaped spinneret in the present invention; Figure 5 for Figure 4 The enlarged view of point A in the middle; Figure 6 is a cross-sectional view of the special-shaped spinneret of the present invention; Figure 7 for Figure 6 Enlarged view of point B in the middle.

[0020] 1. Cloth surface; 2. Bulge; 3. Node; 4. Branch fiber; 5. Micro space; 6. Front nozzle; 7. Connecting pipe; 8. Connecting piece; 9. Rear nozzle; 10. Tooth groove; 11. Spinneret hole; 12. Rotating shaft; 13. Baffle; 14. Embedded rotating groove; 15. Rotating tube; 16. Embedded ring; 17. Ring groove. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the invention is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 the present invention.

[0025] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] A cold-proof, heat-insulating, waterproof fabric, such as Figure 1 As shown, it includes a cloth surface 1, and both sides of the cloth surface 1 are woven into a plurality of array-distributed bulges 2, and the cloth surface 1 is woven by air fibers, such as Figure 2 As shown, the air fiber includes a plurality of nodes 3 and a plurality of branch fibers 4 integrally formed between adjacent nodes 3 , and a microspace 5 is formed between the same group of branch fibers 4 between adjacent nodes 3 , and the volume of the microspace 5 is smaller than the volume of a single branch fiber 4 between adjacent nodes 3 .

[0028] Preferably, the air-bearing fiber is a water-repellent chemical fiber.

[0029] The present invention also provides a process for preparing cold-proof, heat-insulating, and waterproof fabrics, which is used to produce the cold-proof, heat-insulating, and waterproof fabrics. Figure 3 As shown, the following steps are included: Step 1: mixing chemical fiber raw material particles and feeding them into an extruder; Step 2: the extruder extrudes the nascent fiber, and the nascent fiber leaves through the special-shaped spinneret, and the front nozzle 6 in the special-shaped spinneret is stationary, and the rear nozzle 9 in the special-shaped spinneret performs a reciprocating angle deflection motion relative to the front nozzle 6 in the special-shaped spinneret, so that the nascent fiber is twisted to form a plurality of nodes 3, and the nascent air fiber is obtained; Step 3, the nascent air fiber is rolled up after passing through a cooling channel to obtain an air fiber roll; Step 4: feeding the air fiber into a loom and weaving the air fiber into a cold-proof, heat-insulating, and waterproof fabric.

[0030] The innovative process flow of the present invention significantly simplifies the production process of air network fibers. The traditional production method requires a large amount of materials to be repeatedly transported between different machines, while the present invention only requires one extruder and a special-shaped spinneret to directly produce structurally complete air fibers. This method not only greatly reduces the production steps, but also significantly improves production efficiency. Compared with traditional air network yarns, the fibers of the present invention have better integrity and stability, and effectively avoid the problems of breakage and fiber dispersion during the spinning process.

[0031] In addition, the operation of the production process has also become extremely simple. Only simple operations are required at the initial start-up of the equipment, and unloading is performed at the end of production to complete the entire production process. This design greatly reduces the labor intensity of operators, makes the production process more automated, and reduces dependence on manual labor. Through these improvements, the present invention not only improves production efficiency, but also improves product quality and consistency, providing a more efficient and reliable solution for the production of air fibers.

[0032] Preferably, in step three, when the rear nozzle 9 in the special-shaped spinneret undergoes a single reciprocating angle deflection motion, the feed speed of the front spinneret in the special-shaped spinneret decreases during the forward deflection of the rear nozzle 9 in the special-shaped spinneret, and the feed speed of the front spinneret in the special-shaped spinneret returns to normal during the reverse deflection of the rear nozzle 9 in the special-shaped spinneret.

[0033] When the rear nozzle 9 of the shaped spinneret performs a single reciprocating angle deflection motion, the feed speed of the extruder to the front spinneret in the shaped spinneret decreases during the forward deflection of the rear nozzle 9 of the shaped spinneret, and the feed speed of the extruder to the front spinneret in the shaped spinneret returns to normal during the reverse deflection of the rear nozzle 9 of the shaped spinneret. Therefore, the length of the node 3 will not be too much, and the fibers at the node 3 can be fully adhered together, with better integrity and better product quality.

[0034] Preferably, if Figure 4 As shown in and 6, the special-shaped spinneret includes a front nozzle 6 and a rear nozzle 9 rotatably connected thereto, the front nozzle 6 is connected to a connecting pipe 7 connected to the extruder, an embedded ring 16 is fixedly connected to the outer peripheral wall of the connecting pipe 7, an embedded groove 14 for accommodating the connecting pipe 7 is provided on the inner peripheral wall of the connecting point between the rear nozzle 9 and the connecting pipe 7, an annular groove 17 for accommodating the embedded ring 16 is provided on the inner ring of the embedded groove 14, and the annular groove 17 is sealed and connected to the embedded ring 16.

[0035] By providing the embedded ring 16 and the annular groove, when the rear nozzle 9 needs to be rotated, it is only necessary to rotate the embedded ring 16 in the annular groove 17, and the connecting pipe 7 increases the contact surface between the rear nozzle 9 and the front nozzle 6, so that the anti-leakage performance between the two can be improved.

[0036] Preferably, if Figure 4 and Figure 6 As shown, a circle of tooth grooves 10 is provided on the outer peripheral wall of the rear nozzle 9, and one end surface of the front nozzle 6 facing the connecting pipe 7 expands outward to form a plurality of connecting pieces 8, which are used to connect with the extruder.

[0037] The tooth groove 10 is provided to increase the friction coefficient between the rear nozzle 9 and the outside world when the rear nozzle 9 needs to rotate and the external circumferential rotation is transmitted to the rear nozzle 9. That is, the transmission ratio is increased. The holes are opened on the connecting piece 8 to facilitate the front nozzle 6 to be reinforced with bolts when it is installed on the extruder.

[0038] Preferably, if Figure 5 and Figure 7 As shown, a plurality of spinneret holes 11 arranged in a circular array are provided on one side of the rear nozzle 9 away from the front nozzle 6, and a baffle 13 for closing the spinneret holes 11 is rotatably connected to the rear nozzle 9 via a rotating shaft 12 arranged perpendicular to the end surface thereof.

[0039] By setting the baffle 13, when people need to adjust the thickness of the air fiber according to demand, they only need to manually rotate the baffle 13 through the rotating shaft 12 to close the spinneret holes 11, so that only the unclosed spinneret holes 11 are open for spinning and processing.

[0040] Preferably, if Figure 7 As shown, the spinneret hole 11 is spiral, and the inner diameter of the spinneret hole 11 is greater than the pitch thereof.

[0041] Since the spinneret hole 11 is spiral and the inner diameter of the spinneret hole 11 is larger than the pitch, the fiber extruded from the spinneret hole 11 can be rolled without over-rolling, thereby avoiding affecting subsequent processing.

[0042] The cold-proof, heat-insulating, and waterproof fabric in the present invention is woven by air fibers processed in a specific manner. The air fibers processed in a specific manner are similar to the structure of network yarns, but are different from network yarns in that the current network yarns are only formed by air jetting, and the formed nodes 3 are the entanglement between fibers, which are not truly integrated, and the fibers need to be subjected to multiple processes before air network yarns can be obtained, and truly integrated fibers cannot be obtained. The present air fiber is an air network fiber with a structure, which has good integrity and will not spread out or break during the spinning process. In addition, several branch fibers 4 between the nodes 3 of the air fiber can form microspaces 5, and the space of the microspaces 5 is extremely small. The arrangement of the microspaces 5 and several branch fibers 4 enables the cold-proof, heat-insulating, and waterproof fabric made of the present air fiber to form several bulges 2 on the surface. The dense arrangement of the bulges 2 can not only keep the air in the microspaces 5 relatively still, but also the static air in the branch fibers 4 and the microspaces 5 can insulate the heat on both sides of the fabric. At the same time, the length of the node 3 is smaller than the length of the micro space 5, so that the air fiber can maintain its own structural strength and is difficult to spread out. When the air fiber is woven in a shuttle weaving manner to obtain a cold-proof, heat-insulating and waterproof fabric, the air fiber uses the node 3 as an interweaving point, so that the fabric surface 1 of the cold-proof, heat-insulating and waterproof fabric remains relatively light and thin, and the bulge 2 composed of four groups of branch fibers 4 can locally thicken the thickness of the cold-proof, heat-insulating and waterproof fabric, and the position where the bulge 2 is located remains fluffy. The setting of the node 3 can ensure that the air fiber is tightly interwoven and connected. The four groups of branch fibers 4 at the position of the bulge 2 will also be interwoven during the spray weaving process, so that the four groups of branch fibers 4 in each bulge 2 can form a randomly interwoven state, and the space inside the bulge 2 is messy and irregular. When encountering water, a water film can be opened between adjacent branch fibers 4 to further block the air and subsequent water, ensuring that the fabric can maintain a light texture and take into account the effects of cold protection, heat preservation, heat insulation, and waterproofing.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cold-proof, heat-insulating, waterproof fabric, characterized in that: The invention comprises a cloth surface (1), wherein both sides of the cloth surface (1) are woven into a plurality of array-distributed bulges (2), the cloth surface (1) is woven by air fibers, the air fibers comprise a plurality of nodes (3), and a plurality of branch fibers (4) integrally formed between adjacent nodes (3), micro spaces (5) are formed between the same group of branch fibers (4) between adjacent nodes (3), and the volume of the micro spaces (5) is smaller than the volume of a single branch fiber (4) between adjacent nodes (3).

2. The cold-proof, heat-insulating and waterproof fabric according to claim 1, characterized in that: The air fiber is made of water-repellent chemical fiber.

3. A process for preparing cold-proof, heat-insulating, and waterproof fabric, for producing the cold-proof, heat-insulating, and waterproof fabric as claimed in claim 1 or 2, comprising the following steps, characterized in that: Step 1: mixing chemical fiber raw material particles and feeding them into an extruder; Step 2: the extruder extrude the nascent fibers, and the nascent fibers leave through the special-shaped spinneret, and the front nozzle (6) in the special-shaped spinneret is stationary, and the rear nozzle (9) in the special-shaped spinneret performs a reciprocating angle deflection motion relative to the front nozzle (6) in the special-shaped spinneret, so that the nascent fibers are twisted to form a plurality of nodes (3), thereby obtaining nascent air fibers; Step 3, the nascent air fiber is rolled up after passing through a cooling channel to obtain an air fiber roll; Step 4: feeding the air fiber into a loom and weaving the air fiber into a cold-proof, heat-insulating, and waterproof fabric.

4. The process for preparing cold-proof, heat-insulating and waterproof fabric according to claim 1, characterized in that: In step three, when the rear nozzle (9) in the special-shaped spinneret performs a single reciprocating angle deflection motion, during the forward deflection of the rear nozzle (9) in the special-shaped spinneret, the feed speed of the front spinneret in the special-shaped spinneret decreases, and during the reverse deflection of the rear nozzle (9) in the special-shaped spinneret, the feed speed of the front spinneret in the special-shaped spinneret returns to normal.

5. The process for preparing cold-proof, heat-insulating and waterproof fabric according to claim 3, characterized in that: The special-shaped spinneret comprises a front nozzle (6) and a rear nozzle (9) rotatably connected thereto, the front nozzle (6) being connected to a connecting pipe (7) connected to an extruder, an embedded ring (16) being fixedly connected to the outer peripheral wall of the connecting pipe (7), an embedded rotation groove (14) for accommodating the connecting pipe (7) being provided on the inner peripheral wall of the connecting portion between the rear nozzle (9) and the connecting pipe (7), an annular groove (17) for accommodating the embedded ring (16) being provided on the inner ring of the embedded rotation groove (14), and the annular groove (17) being sealedly connected to the embedded ring (16).

6. A process for preparing cold-proof, heat-insulating and waterproof fabric according to claim 5, characterized in that: A circle of tooth grooves (10) is provided on the outer peripheral wall of the rear nozzle (9), and the front nozzle (6) is expanded outwardly toward one end of the connecting pipe (7) to form a plurality of connecting pieces (8), and the connecting pieces (8) are used to be connected to the extruder.

7. A process for preparing cold-proof, heat-insulating and waterproof fabric according to claim 5, characterized in that: A plurality of spinneret holes (11) arranged in a circular array are provided on a side of the rear nozzle (9) away from the front nozzle (6), and a baffle (13) for closing the spinneret holes (11) is rotatably connected to the rear nozzle (9) via a rotating shaft (12) arranged perpendicular to the end surface thereof.

8. A process for preparing cold-proof, heat-insulating and waterproof fabric according to claim 7, characterized in that: The spinneret hole (11) is spiral-shaped, and the inner diameter of the spinneret hole (11) is greater than the pitch of the spiral.

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