Non-blank-pressing production process of thermoplastic strip-shaped material filled with inner material
Through screw heating extrusion and high-circular welding technology, the problem of unsmooth edges of thermoplastic polyurethane elastomers during hot press welding is solved, and the production of thermoplastic strip-like materials without pressing is realized, and the phase change is filled in the strip-like materials is filled. Materials solve the problems of uncomfortable use of products and insufficient material utilization in the prior art, and provide a flat and breathable filler thermoplastic ribbon material.
Patent Information
- Application Number
- CN202411392291.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-01-03
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing thermoplastic polyurethane elastomers are prone to produce unsmooth edges and pressing edges during hot press welding, resulting in products such as cold ice packs or bracelets that may cut the skin when used, and fail to effectively use thermoplastic polyurethane elastomers to make cylindrical materials.
Using screws to heat and extrude cylindrical film materials of different diameters, fold into a belt shape, and form a hollow gap structure through high circumferential wave welding to ensure that the edges are not pressed, and the phase change material is filled in the belt material to form the thermoplasticity of the filling inner material Belt material.
The pressure-free production of thermoplastic ribbon materials is achieved, ensuring flat surfaces of the product, reducing material waste, and providing a filling inner material thermoplastic ribbon material application with breathability and comfort.
Smart Images
Figure CN119239019A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of thermoplastic strip material production, in particular to a non-edge pressing production process of a thermoplastic strip material filled with an inner material. Background Art
[0002] TPU (thermoplastic polyurethane elastomer) is a polymer material between rubber and plastic, with a wide range of hardness, excellent elasticity and wear resistance. It can produce products of different hardness by changing the raw material ratio while maintaining high elasticity. TPU material has good processing performance and can be processed and formed by injection molding, extrusion, calendering and other methods, and is suitable for the production of various sheets. During the hot pressing welding process of TPU sheets, the edge pressing can help fix the position of the TPU sheet to prevent the material from shifting during heating and pressurization, so as to ensure the precise docking of the welding area and avoid uneven welding or defects. However, during the hot pressing welding process, the edge of the TPU material may become rough due to the action of heating and pressure. This may be due to the edge melting caused by the fluidity of the TPU sheet at high temperature or uneven material flow caused by uneven pressure. Cold compress ice packs usually stick two pieces of TPU sheets together and press them with a mold, so that there will be welding pressure lines all around, and the bracelet products have obvious edge pressing. When worn on the wrist, it will cut the skin and feel uncomfortable. Figure 1 shown.
[0003] The barrel material is a continuous barrel material formed by heating and extruding polyester fiber, nylon or other types of synthetic fibers through a screw extruder. The barrel material is usually used to make tires and inflatable columns, mainly due to its material properties and application requirements. For example, barrel materials are widely used in tire manufacturing, usually referring to reinforcing materials used to make tires and other rubber products, mainly because of their excellent elasticity, wear resistance and tear resistance. In order for tires to maintain good performance under various environmental conditions, high-strength barrel materials are required to improve the durability and safety of tires. The lightness and inflatable characteristics of the barrel material make it an ideal material for making inflatable columns. Inflatable columns are usually used in traffic safety, temporary isolation, advertising display and other occasions. After being inflated, the inflatable columns can provide good support and stability, and can be easily stored and transported when not in use. However, there is currently no barrel material made of thermoplastic polyurethane elastomer. Summary of the invention
[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a non-pressing production process for strip materials filled with phase change energy storage materials, wherein the edges of the thermoplastic strip materials filled with inner materials produced by the non-pressing production process are free of pressurized edges.
[0005] The purpose of the present invention is achieved by the following technical solutions:
[0006] A non-edge pressing production process for a thermoplastic strip material filled with an inner material, comprising the following steps:
[0007] S1. Thermoplastic material particles are extruded by a screw heating process to produce cylindrical film materials of different diameters;
[0008] S2. Fold the tubular film materials of different diameters into strip-shaped film materials of different diameters, set one end of the strip-shaped film materials of different diameters as a filling port, fill the inner material from the filling port, and after the filling is completed, seal to obtain the thermoplastic strip material filled with the inner material.
[0009] Furthermore, in step S2, after the tubular film materials of different diameters are folded into the strip film materials of different diameters, pressure lines are formed on the surfaces of the strip film materials of different diameters as cutting reference marks, and the pressure lines are then welded by high-frequency welding. After welding, a knife die is used to locate and cut off excess material in the pressure lines to form a hollow gap structure.
[0010] Furthermore, the inner material is a phase change material.
[0011] Furthermore, the phase change material is one of an organic phase change material and a hydrogel-based phase change material.
[0012] Furthermore, in step S1, the cylindrical film materials with different diameters are produced by adjusting the size of the mold outlet.
[0013] Furthermore, in step S1, the thermoplastic material particles are thermoplastic polyurethane elastomer particles.
[0014] The present invention also provides a thermoplastic strip material filled with an inner material, which is produced by adopting the non-pressing edge production process of the thermoplastic strip material filled with an inner material.
[0015] The present invention also provides a bracelet, comprising the thermoplastic strip material filled with an inner material, wherein both ends of the thermoplastic strip material filled with an inner material form bracelet bands, and one of the bracelet bands is provided with a plastic buckle or Velcro.
[0016] The present invention also provides a leggings ring, characterized in that it comprises the thermoplastic strip material filled with the inner material, one end of the thermoplastic strip material filled with the inner material forms a leggings band, and Velcro is arranged in the leggings band.
[0017] The present invention also provides a neck collar, characterized in that it comprises the thermoplastic strip material for filling the inner material, the two ends of the thermoplastic strip material for filling the inner material form neck collar straps, and a Velcro is arranged at one end of each neck collar strap.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] (1) The present invention provides a process for producing a thermoplastic strip material filled with an inner material without edge pressing, comprising: S1, producing cylindrical film materials of different diameters by extruding thermoplastic material particles through a screw heating process; S2, folding the cylindrical film materials of different diameters into strip film materials of different diameters to ensure that the edges of the thermoplastic strip material filled with the inner material have no edge pressing.
[0020] (2) The present invention provides a non-pressing edge production process for a thermoplastic strip material filled with an inner material, in which a press line is formed on the surface of the strip film material of different diameters as a cutting reference mark. The press line is then welded by high-frequency welding. After welding, a knife die is used to locate and cut off excess material in the press line to form a hollow gap structure, which is conducive to air permeability and makes the surface of the strip film material smooth. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0022] Figure 1 is an appearance diagram of the leggings ring with a pressed edge in Example 1;
[0023] Figure 2 This is an appearance diagram of the neck ring without edge pressing in Example 1. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with specific embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form a new embodiment.
[0025] Example 1
[0026] like Figure 2 As shown, this embodiment provides a neck collar, which is produced by a non-pressing edge production process of a thermoplastic strip material filled with an inner material, comprising the following steps:
[0027] S1. By adjusting the size of the die outlet, the thermoplastic polyurethane elastomer particles are extruded through a screw heating process to produce cylindrical film materials with different diameters;
[0028] S2. Fold the cylindrical film materials of different diameters into strip film materials of different diameters, form pressure lines as cutting reference marks on the surfaces of the strip film materials of different diameters, and then weld the pressure lines through high-frequency welding. After welding, use a knife die to locate and cut off the excess material inside the pressure lines to form a hollow gap structure. Set one end of the strip film materials of different diameters as a filling port, fill paraffin from the filling port, and after filling, seal to obtain a thermoplastic strip material filled with inner material.
[0029] In this embodiment, paraffin is the inner material, which is a kind of organic phase change material, and can also be fatty acid and fatty alcohol.
[0030] In this embodiment, the die cutter is a precise cutting tool with a specific shape and size.
[0031] Pressing lines: During the manufacturing process, a series of equally spaced pressing lines are pressed on the cylindrical film material. These pressing lines serve as reference marks for cutting, guiding the operator or cutting machine where to cut. Cutting guidance: During the automated cutting process, the machine guides the cutting tool along the pressing lines to ensure the accuracy and consistency of the cutting. Reduce material waste: Through precise pressing lines, the utilization of materials can be maximized and material waste can be reduced during the production process.
[0032] High frequency welding: Use high frequency (high frequency heat sealing) technology to weld the pressed wire connection parts of the tubular film material together, which is firm and airtight, providing the necessary structural strength for the tubular film material.
[0033] Phase change materials (PCMs) are materials that can absorb and release large amounts of latent heat during the melting and solidification processes to regulate temperature, improve comfort and energy efficiency, and can therefore be used as cooling materials.
[0034] Example 2
[0035] This embodiment provides a neck collar, which is produced by a non-pressing edge production process of a thermoplastic strip material filled with an inner material, including the following steps:
[0036] S1. By adjusting the size of the die outlet, the thermoplastic polyurethane elastomer particles are extruded through a screw heating process to produce cylindrical film materials with different diameters;
[0037] S2. Fold the cylindrical film materials of different diameters into strip-shaped film materials of different diameters, and form pressure lines as cutting reference marks on the surfaces of the strip-shaped film materials of different diameters. The pressure lines are then welded by high-frequency welding. After welding, a knife die is used to locate and cut off the excess material inside the pressure lines to form a hollow gap structure. One end of the strip-shaped film materials of different diameters is set as a filling port, and the hydrogel-based phase change material is filled from the filling port. After the filling is completed, it is sealed to obtain a thermoplastic strip material filled with the inner material.
[0038] In this embodiment, the hydrogel-based phase change material is the inner material. The hydrogel itself is a polymer network with a high water content and has good flexibility and plasticity. When the hydrogel is used as a shaped phase change material, it is usually formed by combining the water molecules in the hydrogel with the phase change material to form a material that can absorb and release heat during the phase change process.
Claims
1. A non-pressing production process for thermoplastic strip materials filled with inner materials, characterized in that: The following steps are involved: S1. Thermoplastic material particles are extruded by a screw heating process to produce cylindrical film materials of different diameters; S2. Fold the tubular film materials of different diameters into strip-shaped film materials of different diameters, set one end of the strip-shaped film materials of different diameters as a filling port, fill the inner material from the filling port, and after the filling is completed, seal to obtain the thermoplastic strip material filled with the inner material.
2. A non-edge pressing production process for a thermoplastic strip material filled with an inner material as claimed in claim 1, characterized in that: In step S2, after the tubular film materials of different diameters are folded into the strip film materials of different diameters, pressure lines are formed on the surfaces of the strip film materials of different diameters as cutting reference marks. The pressure lines are then welded by high-frequency welding. After welding, a knife die is used to locate and cut off excess material in the pressure lines to form a hollow gap structure.
3. The non-edge pressing production process of a thermoplastic strip material filled with an inner material as claimed in claim 1, characterized in that: The inner material is a phase change material.
4. A non-edge pressing production process for a thermoplastic strip material filled with an inner material as claimed in claim 3, characterized in that: The phase change material is one of an organic phase change material and a hydrogel-based phase change material.
5. The non-edge pressing production process of a thermoplastic strip material filled with an inner material as claimed in claim 1, characterized in that: In step S1, the cylindrical film materials with different diameters are produced by adjusting the size of the mold outlet.
6. The non-edge pressing production process of a thermoplastic strip material filled with an inner material as claimed in claim 1, characterized in that: In step S1, the thermoplastic material particles are thermoplastic polyurethane elastomer particles.
7. A thermoplastic strip material filled with an inner material, characterized in that: The invention is produced by adopting the non-edge pressing production process of the thermoplastic strip material filled with inner material as described in any one of claims 1 to 6.
8. A bracelet, characterized in that: A thermoplastic strip material filled with an inner material as claimed in any one of claims 1 to 6, wherein both ends of the thermoplastic strip material filled with an inner material form wristbands, and one of the wristbands is provided with a plastic buckle or Velcro.
9. A leggings ring, characterized in that: A thermoplastic strip material with a filling inner material comprising any one of claims 1 to 6, wherein one end of the thermoplastic strip material with a filling inner material forms a leggings band, and Velcro is arranged in the leggings band.
10. A neck collar, characterized in that: The thermoplastic strip material with filling inner material comprises the thermoplastic strip material with filling inner material as described in any one of claims 1 to 6, the two ends of the thermoplastic strip material with filling inner material form neck loops, and a Velcro is arranged at one end of each neck loop.