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CN-122005191-A - Planar electric heating neck guard belt based on stone needle-knitting composite layer and preparation method

CN122005191ACN 122005191 ACN122005191 ACN 122005191ACN-122005191-A

Abstract

The invention discloses a planar electric heating neck-protecting belt based on a stone needle-knitting composite layer and a preparation method thereof. The knitting heating layer is formed by periodically and alternately knitting conductive silver-plated yarns and acrylic yarns, and a parallel conductive network is formed by combining copper wire electrodes embedded at two sides, so that uniform planar heating is realized. The far infrared stone needle layer is loaded with 200-400 meshes of stone needle powder, is closely adjacent to the heating layer, absorbs heat efficiently and releases far infrared radiation, plays a role in heat storage and slow release, and is matched with a built-in lithium battery power supply and magic tape adjusting structure, the device can stably maintain 40-45 ℃ of safe hot compress, effectively relieves neck fatigue, and promotes physiotherapy convenience and comfort.

Inventors

  • YU WENSHUANG
  • ZHAO MENGMENG

Assignees

  • 上海工程技术大学

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. The planar electric heating neck strap based on the stone needle-knitting composite layer is characterized by comprising a neck strap main body (1) and a power supply component integrated at one end of the neck strap main body, wherein the power supply component comprises a lithium battery (6), a switch (7) and a USB interface (8); The neck protection belt main body (1) is sequentially overlapped and fixed with a skin-friendly ventilation layer (2), a far infrared stone needle layer (3), a knitting heating layer (4) and a heat insulation layer (5) from inside to outside; The knitted heating layer (4) is formed by periodically and alternately knitting conductive yarns (42) and thermal insulation yarns (43), oxygen-free copper wires (41) are longitudinally embedded into two sides of the knitted heating layer (4) to serve as electrodes, and the oxygen-free copper wires (41) are electrically connected with the conductive yarns (42) and connected into the power supply assembly to form a planar heating network; the far infrared stone needle layer (3) comprises a flexible substrate (34) and stone needle powder (31) loaded on the surface of the flexible substrate (34), and the far infrared stone needle layer (3) is arranged close to the knitting heating layer (4) so as to receive joule heat generated by the far infrared stone needle layer and release far infrared radiation.
  2. 2. The planar electric heating neck strap based on the stone needle-knitting composite layer according to claim 1, characterized in that the far infrared stone needle layer (3) is of a sandwich structure formed by a hot pressing process, the stone needle powder (31) is packaged between two layers of hot melt adhesive liners serving as flexible substrates (34), and the stone needle powder (31) is melted and permeated by hot melt adhesive to achieve interlayer fixation.
  3. 3. The planar electric heating neck guard belt based on the stone needle-knitting composite layer according to claim 1, wherein the far infrared stone needle layer (3) is of a coating structure, the stone needle powder (31) and an adhesive (32) are mixed to form slurry and coated on the surface of the flexible substrate (34) to form a stone needle coating (33), and an adhesive liner is covered on the outer side of the stone needle coating (33) for packaging and fixing.
  4. 4. The planar electric heating neck strap based on the stone needle-knitted composite layer according to claim 1 is characterized in that the knitted structure of the knitted heating layer (4) is 1 x 1 rib, the specification of the conductive silver-plated yarn (42) is 70tex, and the specific resistance of the length is 0.264 Ω· (10 cm) -1.
  5. 5. The planar electric heating neck guard belt based on the stone needle-knitting composite layer, which is disclosed in claim 1, is characterized in that two ends of the neck guard belt main body (1) are provided with fixing structures, each fixing structure comprises a fixing end and a movable end, the fixing ends are arranged on the inner side of one end of the neck guard belt main body (1), the movable ends are arranged on the outer side of the other end of the neck guard belt main body (1), and the edge of the neck guard belt main body (1) is provided with a wrapping strip (11).
  6. 6. The preparation method of the planar electric heating neck guard band based on the stone needle-knitting composite layer is used for manufacturing the planar electric heating neck guard band based on the stone needle-knitting composite layer as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps: Setting the conductive yarns (42) and the thermal-insulation yarns (43) to be periodically and alternately arranged in a row direction according to a ratio of 1:1 by using a knitting program of a computerized flat knitting machine, longitudinally embedding oxygen-free copper wires (41) on two sides of a knitting heating layer (4) by program control in the knitting process, and enabling the oxygen-free copper wires (41) to be in direct contact with the conductive yarns (42) to form a parallel conductive network; Loading stone needle powder (31) with the particle size of 200-400 meshes on a hot melt type flexible substrate (34), and enabling the flexible substrate (34) to generate viscosity through a heat treatment process so as to realize semi-surrounding or sandwich type packaging of the stone needle powder (31); Overlapping the skin-friendly ventilation layer (2), the far infrared stone needle layer (3), the knitting heating layer (4) and the heat insulation layer (5) from inside to outside according to a path with optimal heat utilization efficiency, and fixing the layers by using a sewing or hot pressing mode; A power supply assembly comprising a lithium battery (6), a switch (7) and a USB interface (8) is arranged at one end of a main body (1) of the neck protection belt, and the edge of the main body (1) of the neck protection belt is subjected to closely-binding and stitching treatment by adopting a binding strip (11).
  7. 7. The preparation method of the planar electric heating neck strap based on the stone needle-knitting composite layer, which is disclosed in claim 6, is characterized in that the stone needle powder (31) and the adhesive (32) are uniformly mixed according to a proportion to prepare slurry, the slurry is coated on the surface of the flexible substrate (34), and the outside of the coating is covered with a bonding lining of a specification after air drying and curing.
  8. 8. The preparation method of the planar electric heating neck strap based on the stone needle-knitting composite layer, which is disclosed by claim 6, is characterized in that the construction of the far infrared stone needle layer (3) adopts a hot-pressing interlayer process, wherein the hot-pressing interlayer process is carried out after dry stone needle powder (31) is uniformly spread between two layers of hot-melt adhesive liners, hot pressing is carried out, the stone needle powder (31) is melted and permeated by hot melt adhesive, and the stone needle powder is wrapped, cooled and solidified to form an integrated structure.
  9. 9. The preparation method of the planar electric heating neck strap based on the stone needle-knitting composite layer, which is disclosed in claim 6, is characterized in that the construction of the far infrared stone needle layer (3) adopts a coating-packaging process, wherein stone needle powder (31) and an aqueous environment-friendly adhesive (32) are mixed to prepare slurry and coated on the surface of a flexible substrate (34) to form a stone needle coating (33), and an adhesive lining is coated outside the stone needle coating (33) after air drying and solidification.
  10. 10. The preparation method of the planar electric heating neck guard belt based on the stone needle-knitting composite layer, which is disclosed in claim 6, is characterized in that the surface temperature of the far infrared stone needle layer (3) is stably maintained at 38-42 ℃ by controlling the cloth heat conductivity coefficient of the heat insulation layer (5) to be less than or equal to 0.035W/(m.K) and directionally driving the Joule heat generated by the knitting heating layer (4) to the far infrared stone needle layer (3) side.

Description

Planar electric heating neck guard belt based on stone needle-knitting composite layer and preparation method Technical Field The invention relates to the field of wearable physiotherapy and thermal insulation products, in particular to a planar electric heating neck protection belt based on a stone needle-knitting composite layer and a preparation method thereof. Background With the long-term office work, the increase of the use frequency of electronic equipment and the continuous increase of the population suffering from cervical vertebra strain, the neck physiotherapy and warmth retention wearable products gradually become an important component in the field of health care. The common neck protection device in the market at present mainly carries out passive warm keeping on the neck through a heat insulation material or realizes local hot compress through heating elements such as an electric heating wire, an electric heating film and the like so as to relieve neck muscle fatigue and promote local blood circulation. The existing electric heating neck protection products generally adopt resistance wires, carbon fiber heating wires or flexible electric heating films as heating units, and are embedded into fabric or foam material layers to form a heating structure. However, such structures still have some drawbacks during actual use. For example, the traditional resistance wire or linear heating structure is generally in linear distribution, a uniform and stable planar thermal field is difficult to form in the neck region, the problem of overhigh local temperature or uneven heating is easy to occur, and the partial electrothermal film structure can realize planar heating, but has poor flexibility and air permeability, limited combination degree with textile materials and insufficient comfort when worn for a long time. In addition, the existing products focus on single electric heating and warm keeping functions, and the comprehensive improvement of the physical therapy effect of the human body is limited. On the other hand, stone needle materials are widely applied in the field of traditional Chinese medicine physiotherapy because of the characteristics of far infrared radiation and good heat conduction. The stone needle can release far infrared energy under the heated condition, and generates a certain physiotherapy auxiliary effect on a human body through heat conduction and radiation. However, most of the existing stone needle physical therapy products adopt solid block or particle filling structures, and usually need to be used by means of external heating equipment or hot compress mode, so that good integration with flexible wearable structures is difficult to achieve, and stable and controllable continuous heating environments are difficult to form. In addition, in the field of wearable heating textiles, knitted structures are considered to be an important way of constructing flexible heating structures due to their good softness, extensibility and breathability. Through the structure arrangement of the conductive yarns in the knitting structure, an electric heating network with certain planar distribution characteristics can be formed, so that a relatively uniform heating effect is realized. However, the needle-shaped planar electric heating structure and the stone needle physiotherapy material are effectively compounded, and a multi-layer composite structure suitable for neck wearing is formed on the premise of ensuring flexibility, comfort and safety, and a mature technical scheme is still lacking at present. In view of the above, the invention provides a planar electric heating neck guard belt based on a stone needle-knitting composite layer and a preparation method thereof. Disclosure of Invention The invention aims to provide a planar electric heating neck protection belt based on a stone needle-knitting composite layer and a preparation method thereof, and aims to solve the problems that the heating structure of the traditional electric heating neck protection product is mostly a linear heating unit, a uniform and stable planar thermal field is difficult to form, and the stone needle and a stone needle physiotherapy material are difficult to effectively combine, so that physiotherapy effect and wearing comfort are insufficient. In a first aspect, the present invention provides a planar electric heating neck strap based on a stone needle-knitting composite layer, comprising: the neck strap comprises a neck strap body and a power supply assembly integrated at one end of the neck strap body, wherein the power supply assembly comprises a lithium battery, a switch and a USB interface; The neck protection belt main body is sequentially overlapped and fixed with a skin-friendly ventilation layer, a far infrared stone needle layer, a knitting heating layer and a heat insulation layer from inside to outside; The knitted heating layer is formed by periodically and alternately knitting conductive yarns and