A breathable and adjustable thermal insulation fabric and its preparation process

Abstract

The present invention discloses a breathable and adjustable thermal insulation fabric and a preparation process, which belongs to the field of textile technology and aims to solve the problem that the moisture generated by the human body cannot be discharged in time, which will cause the wearer to feel stuffy and uncomfortable. The key points of the technical solution are: it includes a skin-friendly layer, a thermal insulation layer and a windproof layer, and is characterized in that: the thermal insulation layer is woven by thermal insulation breathable yarn, and the outer wall of the thermal insulation breathable yarn is provided with a groove, and the direction of the groove is perpendicular to the setting direction of the central axis of the thermal insulation breathable yarn; when the thermal insulation breathable yarn is woven to form the thermal insulation layer, the groove forms a plurality of breathable channels connecting the skin-friendly layer and the windproof layer on the thermal insulation layer. The moisture derived from the skin-friendly layer of the present invention can be directly guided to the windproof layer through the breathable channel, so that it can be exchanged with the outside world to a certain extent, and the moisture generated by the human body is discharged in time, which can avoid the problem of the wearer feeling stuffy and uncomfortable.

Description

Technical Field

[0001] The invention relates to the field of textile technology, and more particularly to a breathable and adjustable warm-keeping fabric and a preparation process thereof. Background Art

[0002] Existing thermal insulation fabrics are generally arranged in a multi-layer structure, and an air layer for fixing air is formed in the middle layer, which reduces the convection between the heat generated by the body and the cold air outside through the still air, thereby forming a good thermal insulation effect.

[0003] Although the still air in the air layer helps to keep warm, the air in the air layer cannot be exchanged with the outside world to a certain extent, so the moisture generated by the human body cannot be discharged in time, causing the wearer to feel stuffy and uncomfortable.

[0004] Therefore, new solutions need to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a breathable and adjustable thermal insulation fabric and a preparation process in order to solve the above-mentioned problems.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions: a breathable and adjustable thermal insulation fabric, comprising a skin-friendly layer, a thermal insulation layer and a windproof layer, wherein the thermal insulation layer is woven by thermal insulation breathable yarn, and the outer wall of the thermal insulation breathable yarn is provided with a groove, and the direction of the groove is perpendicular to the setting direction of the central axis of the thermal insulation breathable yarn;

[0007] When the thermal insulation and breathable yarn is woven to form a thermal insulation layer, the grooves form a plurality of breathable channels on the thermal insulation layer that communicate with the skin-friendly layer and the windproof layer.

[0008] The present invention is further configured as follows: the thermal insulation and breathable yarn includes a core yarn and a wrapping yarn, the core yarn is provided with a notch running perpendicular to the direction in which the central axis of the core yarn is set, the wrapping yarn is spirally wrapped around the outside of the core yarn, and the wrapping yarn forms a groove in the notch.

[0009] The present invention is further configured as follows: two symmetrically positioned hollow channels are provided in the core yarn.

[0010] The present invention is further configured as follows: one of the hollow channels is connected to the notch, two winding yarns are provided, and the two winding yarns are wound in parallel and in the same direction on the outside of the core yarn, and the length of the notch along the central axis of the core yarn is greater than the length formed by four times the diameter of the winding yarn, so that three winding yarns wound at the notch position completely cover the notch;

[0011] The two winding yarns are winding yarn one and winding yarn two, and the shrinkage rates of winding yarn one and winding yarn two are different. After winding yarn one and winding yarn two absorb moisture, the shrinkage degrees of winding yarn one and winding yarn two are different, so that a gap is formed between winding yarn one and winding yarn two.

[0012] A process for preparing a breathable and adjustable thermal insulation fabric, used for producing the above fabric:

[0013] Step 1, start extruder 1, extruder 2 and extruder 3, and put the raw materials of core yarn, winding wire 1 and winding wire 2 into extruder 1, extruder 2 and extruder 3 respectively;

[0014] Step 2: Extruder 1 performs extrusion to form a core yarn through a spinneret, and then, during the cooling process of the core yarn, a punching assembly is used to punch holes in the core yarn to form a gap;

[0015] Step 3, the extruders 2 and 3 perform extrusion, and form winding wire 1 and winding wire 2 through a spinneret;

[0016] Step 4, arranging the winding line 1 and the winding line 2 side by side, and then winding them around the outside of the core yarn in a spiral winding manner to form a warm and breathable yarn;

[0017] Step five: Weave the warm and breathable yarn in a plain weave manner to form a warm layer, and sew it with the skin-friendly layer and the windproof layer to form a warm and breathable fabric.

[0018] The present invention is further configured as follows: the spinneret includes a base and a shaping seat that are connected to each other, the base and the shaping seat are both provided with flow channels that are connected to each other, and the shaping seat is provided with a punching assembly that is connected to the flow channel.

[0019] The present invention is further configured as follows: the punching assembly includes a cylinder, a needle and an air pump connected to the needle, the needle is arranged on one side of the flow channel and corresponds to the position of one of the hollow channels of the core yarn, the needle is provided with a hollow structure connected to the air pump, a suction port is opened at one end of the needle close to the core yarn, and the needle is configured as a cutting edge structure at the edge of the suction port.

[0020] The present invention is further configured such that: the suction port is arranged at an angle.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The moisture from the skin-friendly layer can be directly guided to the windproof layer through the breathable channel, so that it can be exchanged with the outside world to a certain extent. The moisture generated by the human body can be discharged in time, avoiding the wearer from feeling stuffy and uncomfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the warm and breathable yarn;

[0025] Figure 3 is a schematic diagram of the structure of the core yarn;

[0026] Figure 4 It is a schematic diagram of the structure of the warm and breathable yarn when viewed from above;

[0027] Figure 5 is a schematic diagram of the structure of a spinneret;

[0028] Figure 6 Schematic diagram of the cross-sectional structure of the spinneret.

[0029] Figure numerals: 1. thermal insulation layer; 2. thermal insulation and breathable yarn; 3. core yarn; 4. winding yarn; 5. notch; 6. groove; 7. hollow channel; 8. base; 9. shaping seat; 10. flow channel; 11. cylinder; 12. needle; 13. suction pump; 14. suction port; 15. breathable channel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0031] A breathable and adjustable thermal fabric, such as Figure 1-Figure 4 As shown, it includes a skin-friendly layer, a thermal insulation layer 1 and a windproof layer, wherein the thermal insulation layer 1 is woven by a thermal insulation and breathable yarn 2, and a groove 6 is arranged on the outer wall of the thermal insulation and breathable yarn 2, and the direction of the groove 6 is perpendicular to the setting direction of the central axis of the thermal insulation and breathable yarn 2. Therefore, when the thermal insulation and breathable yarn 2 is woven to form the thermal insulation layer 1, the groove 6 forms a plurality of air permeable channels 15 connecting the skin-friendly layer and the windproof layer on the thermal insulation layer 1, and then the moisture discharged from the skin-friendly layer can be directly guided to the windproof layer through the air permeable channels 15, so that a certain degree of exchange can be carried out with the outside world, and the moisture generated by the human body can be discharged in time, which can avoid the problem of the wearer feeling stuffy and uncomfortable.

[0032] Among them Figure 2 and Figure 4 As shown, the thermal insulation and breathable yarn 2 includes a core yarn 3 and a wrapping yarn 4. The core yarn 3 is provided with a notch 5 which is perpendicular to the direction in which the central axis of the core yarn 3 is set. The wrapping yarn 4 is spirally wound around the outside of the core yarn 3, and the wrapping yarn 4 forms a groove 6 in the notch 5. The notch 5 is designed to ensure the stable formation of the groove 6. In the process of weaving the thermal insulation and breathable yarn 2 to form the thermal insulation layer 1, the breathable channel 15 is stably formed through the groove 6 to ensure the stability of the overall structure.

[0033] like Figure 4 As shown, two symmetrical hollow channels 7 are provided in the core yarn 3, and static air is given to the core yarn 3 through the hollow channels 7, so as to ensure the warmth-keeping effect of the core yarn 3, and one of the hollow channels 7 is connected to the notch 5, so that the static air in the hollow channel 7 can circulate with the outside through the notch 5, thereby improving the ventilation effect, and at the same time, the circulation rate can be limited by the winding yarn 4, so as to maintain the warmth-keeping performance, and at the same time, two winding yarns 4 are provided, and the two winding yarns 4 are wound around the outside of the core yarn 3 in parallel and in the same direction, and the two winding yarns 4 are winding line 1 and winding line 2, respectively, and the shrinkage rates of winding line 1 and winding line 2 are different. After winding line 1 and winding line 2 absorb moisture, winding line 1 and winding line 2 shrink to different degrees, so that a gap is formed between winding line 1 and winding line 2, so that after the fabric absorbs a certain amount of moisture, a gap will appear between winding line 1 and winding line 2, so that the static air in the hollow channel 7 can circulate with the outside through the gap, and the specific application is as follows;

[0034] For example, when wearing clothing made of the fabric of the present application and then exercising, the human body will generate a large amount of heat. In order to maintain body temperature balance, the human body will adopt a heat dissipation mechanism of sweat evaporation. When sweat evaporates from the skin surface, it will consume a certain amount of heat, thereby playing a role in heat dissipation, and the moisture formed by the evaporation of sweat will be absorbed by the skin-friendly layer, thereby ensuring the dryness of the skin. Then the moisture absorbed by the skin-friendly layer will be directed to the thermal insulation layer 1, and then the winding line 1 and the winding line 2 will absorb the moisture after the liquefaction of the moisture, and will shrink to varying degrees, thereby forming gaps. Therefore, when ensuring exercise or other body temperature increases, the clothing made of the fabric can speed up the rate of exchange of internal air with the outside world, so that the moisture generated by the human body can be discharged in time, thereby improving the breathability and reducing the wearer's feeling of stuffiness and discomfort.

[0035] At the same time Figure 2-Figure 3 As shown, the length of the notch 5 along the central axis of the core yarn 3 is greater than the length formed by four times the diameter of the winding yarn 4, so that three winding yarns 4 wound on the position of the notch 5 completely cover the notch 5, thereby ensuring that when a shrinkage gap is formed, a gap moves or is formed on the notch 5, thereby ensuring the heat in the hollow channel 7 of the core yarn 3 is extracted.

[0036] The thermal insulation and breathable yarn 2 is woven in a plain weave to form the thermal insulation layer 1, wherein the warp and weft yarns of the plain weave are interlaced every other one, so within the arrangement plane of the warp and weft yarns with the same number of yarns, the number of interlacing times is the largest, and the yarn bending points are also the largest. This makes the fabric strong, wear-resistant, stiff and flat, and because the interlacing points are dense, the yarns are not easy to be too close together, and the density of the fabric is generally not too high, so the plain weave fabric is usually thinner, so that the overall structure of the thermal insulation layer 1 is strong, stiff and thin.

[0037] A process for preparing a breathable and adjustable thermal insulation fabric, used for producing the above fabric:

[0038] Step 1, start extruder 1, extruder 2 and extruder 3, and put the raw materials of core yarn 3, winding wire 1 and winding wire 2 into extruder 1, extruder 2 and extruder 3 respectively;

[0039] Step 2: the extruder 1 performs extrusion to form a core yarn 3 through a spinneret, and then during the cooling process of the core yarn 3, the core yarn 3 is punched by a punching assembly to form a notch 5;

[0040] Step 3, the extruders 2 and 3 perform extrusion, and form winding wire 1 and winding wire 2 through a spinneret;

[0041] Step 4: Arrange the winding line 1 and the winding line 2 side by side, and then wind them around the outside of the core yarn 3 in a spiral winding manner to form a warm and breathable yarn 2;

[0042] Step five: weave the warm and breathable yarn 2 in a plain weave manner to form a warm layer 1, and sew it with the skin-friendly layer and the windproof layer to form a warm and breathable fabric.

[0043] like Figure 5-Figure 6 As shown, the spinneret includes a base 8 and a shaping seat 9 that are connected to each other. The base 8 and the shaping seat 9 are both provided with flow channels 10 that are connected to each other. The shaping seat 9 is provided with a punching component that is connected to the flow channel 10. The effect of opening the gap 5 is achieved by setting the punching component.

[0044] The punching assembly includes a cylinder 11, a needle 12 and an air pump 13 connected to the needle 12. The needle 12 is arranged on one side of the flow channel 10 and corresponds to the position of one of the hollow channels 7 of the core yarn 3. The needle 12 is provided with a hollow structure connected to the air pump 13. A suction port 14 is provided at one end of the needle 12 close to the core yarn 3, and a cutting edge structure is provided at the edge of the suction port 14 of the needle 12, so that the core yarn 3 is cut into the hollow channel 7 through the cutting edge structure at the suction port 14 of the needle 12, and then the core yarn 3 continues to move, so that the needle 12 cuts a notch 5, and after moving to the appropriate position, the needle 12 is further embedded, so that the core yarn 3 layer at the notch 5 is separated from the main core yarn 3, so that it is sucked out by the air pump 13.

[0045] The suction port 14 is arranged at an angle, which makes it easier for the needle 12 to cut the core yarn 3 and enter the hollow channel 7 .

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A breathable and adjustable thermal insulation fabric, comprising a skin-friendly layer, a thermal insulation layer and a windproof layer, characterized in that: The thermal insulation layer is woven by thermal insulation and breathable yarn, and the outer side wall of the thermal insulation and breathable yarn is provided with a groove, and the direction of the groove is perpendicular to the setting direction of the central axis of the thermal insulation and breathable yarn; When the thermal insulation and breathable yarn is woven to form a thermal insulation layer, the grooves form a plurality of breathable channels on the thermal insulation layer that communicate with the skin-friendly layer and the windproof layer; The thermal insulation and breathable yarn comprises a core yarn and a wrapping yarn, wherein the core yarn is provided with a notch which is perpendicular to the setting direction of the central axis of the core yarn, and the wrapping yarn is spirally wrapped around the outside of the core yarn, and the wrapping yarn forms a groove in the notch; Two symmetrically positioned hollow channels are arranged in the core yarn; One of the hollow channels is connected to the gap, two winding yarns are provided, and the two winding yarns are wound in parallel and in the same direction on the outside of the core yarn, and the length of the gap along the central axis of the core yarn is greater than the length formed by four times the diameter of the winding yarn, so that three winding yarns wound at the gap position completely cover the gap; The two winding yarns are winding yarn one and winding yarn two, and the shrinkage rates of winding yarn one and winding yarn two are different. After winding yarn one and winding yarn two absorb moisture, the shrinkage degrees of winding yarn one and winding yarn two are different, so that a gap is formed between winding yarn one and winding yarn two.

2. The breathable and adjustable thermal insulation fabric according to claim 1, characterized in that: The thermal insulation and breathable yarn is woven in a plain weave manner to form a thermal insulation layer.

3. A process for preparing a breathable and adjustable thermal insulation fabric, used to produce the thermal insulation fabric according to claim 2, characterized in that: Step 1, start extruder 1, extruder 2 and extruder 3, and put the raw materials of core yarn, winding wire 1 and winding wire 2 into extruder 1, extruder 2 and extruder 3 respectively; Step 2: Extruder 1 performs extrusion to form a core yarn through a spinneret, and then, during the cooling process of the core yarn, a punching assembly is used to punch holes in the core yarn to form a gap; Step 3, the extruders 2 and 3 perform extrusion, and form winding wire 1 and winding wire 2 through a spinneret; Step 4, arranging the winding line 1 and the winding line 2 side by side, and then winding them around the outside of the core yarn in a spiral winding manner to form a warm and breathable yarn; Step five: Weave the warm and breathable yarn in a plain weave manner to form a warm layer, and sew it with the skin-friendly layer and the windproof layer to form a warm and breathable fabric.

4. The process for preparing a breathable and adjustable thermal insulation fabric according to claim 3, characterized in that: The spinneret comprises a base and a shaping seat which are connected to each other. The base and the shaping seat are both provided with flow channels which are connected to each other. The shaping seat is provided with a punching assembly which is connected with the flow channel.

5. The process for preparing a breathable and adjustable thermal insulation fabric according to claim 4, characterized in that: The punching assembly includes a cylinder, a needle and an air pump connected to the needle. The needle is arranged on one side of the flow channel and corresponds to the position of one of the hollow channels of the core yarn. The needle is provided with a hollow structure connected to the air pump. A suction port is opened at one end of the needle close to the core yarn, and a cutting edge structure is arranged at the edge of the suction port.

6. The process for preparing a breathable and adjustable thermal insulation fabric according to claim 5, characterized in that: The suction port is arranged obliquely.

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