Burr-free heat-shrinkable sleeve

Abstract

The utility model relates to a burr-free heat-shrinkable tube, and belongs to the technical field of heat-shrinkable tube preparation. The sleeve body is formed by vertically and horizontally interweaving and connecting a plurality of polyester warp yarns and a plurality of anti-burr composite weft yarns, and each anti-burr composite weft yarn comprises a polyolefin inner core material positioned in the center and a polyester winding yarn wound on the surface of the polyolefin inner core material. In actual use, the heat-shrinkable sleeve is sleeved on the surface of the pipe, after heating, the polyester winding wires are heated, shrunk and bonded, and the polyolefin inner core material and the polyester warp-wise wires with lower thermoplasticity are extruded and fixed, so that the problem that burrs are easy to generate due to heat-shrinkable extrusion after a traditional heat-shrinkable gradient-free pipe is heated is solved; the surface of the finally prepared burr-free heat-shrinkable sleeve is smooth and burr-free after being used, and the application prospect is wide.

Description

Technical Field

[0001] This utility model relates to a burr-free heat shrink tubing, belonging to the field of heat shrink tubing preparation technology. Background Technology

[0002] Currently, heat-shrinkable braided tubing possesses excellent flame-retardant, environmentally friendly, and insulating properties. It is also highly flexible, has a low shrinkage temperature, and shrinks quickly, making it particularly suitable for protecting temperature-sensitive components. Furthermore, it can be widely used for coating and insulation protection in wire processing, solder joint protection, encapsulation of electronic components, and insulation protection of resistors and capacitors. Heat-shrinkable braided tubing shrinks when heated; when cold, it is a thick tube, but when heated, it shrinks into a thin tube and adheres tightly to the surface of the object it is attached to, thus ensuring the object's insulation.

[0003] Globally, insulation, heat insulation, and wear-resistant materials are developing towards integration. For example, materials used in high-speed vehicles to protect vehicle water pipes and oil pipes and prevent vehicle oil and water leaks are generally used in the market to prevent vehicle safety hazards. These products are made of monofilament PE and multifilament PET materials. Due to the difference in thermoplasticity between monofilaments, they are easy to be squeezed and curled during weaving, which increases the burr feeling after the tubing is used.

[0004] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a burr-free heat shrink tubing that would have greater industrial value. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a burr-free heat shrink tubing.

[0006] This utility model discloses a burr-free heat shrink tubing, comprising a tubing body. The tubing body is composed of multiple polyester warp yarns and multiple anti-burr composite weft yarns interwoven and connected. Each anti-burr composite weft yarn includes a polyolefin inner core material at its center and polyester winding yarns wound around the surface of the polyolefin inner core material. When the tubing is fitted onto the surface of the tubing and heated, the polyester winding yarns shrink and bond, compressing and fixing the less thermoplastic polyolefin inner core material and the polyester warp yarns. This avoids the problem of burrs easily generated during heat shrinking and extrusion of traditional non-heat shrinkable tubing. The resulting burr-free heat shrink tubing has a smooth, burr-free surface after use.

[0007] Furthermore, each of the anti-burr composite weft yarns is wrapped around the circumference once to sequentially weave the polyester warp yarns.

[0008] Furthermore, the non-shrinkable polyester warp yarn is aligned with the axial direction of the sleeve body in the length direction.

[0009] Further, the polyester winding wire specification is 450-9000D, the single thickness before heat shrinkage is 0.1-0.5mm, and the heat shrinkage ratio is less than or equal to 85%.

[0010] Further, the axial distance between the two adjacent polyester longitudinal wires perpendicular to the axial direction is 45±3mm.

[0011] Further, the distance between the two adjacent anti-burr composite weft wires on the cylindrical surface of the sleeve body in the circumferential direction is 1.2±0.3mm.

[0012] Further, the inner diameter of the sleeve body in the original state before heat shrinkage is opened into a regular cylindrical shape is 6-120mm.

[0013] By the above scheme, the present application has at least the following advantages:

[0014] In the actual use process of the anti-burr heat shrinkable sleeve, the polyolefin inner core material with smaller heat shrinkage is used as the inner core material, which is used as the inner core structure, and the polyester winding wire with larger thermoplasticity is wound on the surface to prepare the anti-burr composite weft wire, and the heat shrinkable sleeve is obtained by longitudinal and horizontal weaving of the plurality of polyester longitudinal wires and the plurality of anti-burr composite weft wires. In actual use, the heat shrinkable sleeve is sleeved on the surface of the pipe material, and after heating, the polyester winding wire is shrunk and adhered, the polyolefin inner core material with smaller thermoplasticity and the polyester longitudinal wire are extruded and fixed, the problem that the traditional heat shrinkable gradient pipe material is easily produced after heating and heat shrinkage extrusion is avoided, and finally the anti-burr heat shrinkable sleeve is obtained. The surface is smooth and has no burr after use, and has wide application prospect.

[0015] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and the content of the specification can be implemented, the following will be described in detail with the preferred embodiment of the present application and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed in the embodiment, it should be understood that the following drawings only show a certain embodiment of the present application, therefore should not be regarded as a limitation, for those skilled in the art, without creative labor, other related drawings can also be obtained according to these drawings.

[0017] Figure 1 is the weaving structure schematic view of the anti-burr heat shrinkable sleeve of the present application;

[0018] Figure 2 is the structure schematic view of the composite radial wire in the anti-burr heat shrinkable sleeve of the present application;

[0019] In the figure,

[0020] 100, sleeve body;

[0021] 1, polyester warp yarn; 2, anti-burr composite weft yarn;

[0022] 11, polyolefin inner core material; 12, polyester wrapping yarn. DETAILED DESCRIPTION

[0023] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0024] Referring to Figure 1 and Figure 2 The utility model discloses a kind of no burr heat-shrinkable sleeves of a preferred embodiment, including sleeve body 100, the sleeve body 100 is by multiple polyester warp yarn 1 and multiple anti-burr composite weft yarn 2 longitudinal and transverse interlaced connection, each anti-burr composite weft yarn 2 including polyolefin inner core material 11 in center and polyester wrapping yarn 12 that is wound on the surface of polyolefin inner core material 11.

[0025] Each anti-burr composite weft yarn 2 is circumferentially around a circle to form weaving in turn to each polyester warp yarn 1;

[0026] The polyester warp yarn 1 that does not occur heat shrinkage is consistent with the axial direction of sleeve body 100 in length direction;

[0027] The polyester wrapping yarn specification is 450-9000D, and the thickness of single root before heat shrinkage is 0.1-0.5mm, and heat shrinkage ratio is ≤85%.

[0028] The axial distance between two adjacent polyester warp yarns 1 perpendicular to axial direction is 45±3mm.

[0029] The distance between two adjacent anti-burr composite weft yarns 2 on the circumferential direction of sleeve body 100 cylindrical surface is 1.2±0.3mm.

[0030] The inner diameter of sleeve body 100 when being opened into regular cylindrical shape in original state that does not occur heat shrinkage is 6-120mm.

[0031] The working principle of the utility model is as follows:

[0032] The non-burr heat shrinkable sleeve in actual use process, through to have smaller heat shrinkage of polyolefin inner core material as inner core material, as inner core structure, and on its surface winding has more thermoplastic polyester winding silk 12 preparation into anti-burr composite weft silk 2, through a plurality of polyester warp silk 1 and a plurality of anti-burr composite weft silk 2 longitudinal and transverse weaving get heat shrinkable sleeve, in actual use, heat shrinkable sleeve sleeve on the surface of pipe material, after heating, polyester winding silk 12 heat shrinkage adhesion, extrusion and fix the smaller thermoplastic polyolefin inner core material and polyester warp silk 1, avoid the traditional no heat shrinkage gradient pipe material heating heat shrinkage extrusion easy to produce burr problem, finally prepared non-burr heat shrinkable sleeve after using surface smooth no burr, wide application prospect.

[0033] Finally, a few points should be noted that: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad understanding, can be mechanical connection or electrical connection, can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for indicating the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0034] Second: the utility model discloses the embodiment of the drawings, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0035] Finally: the above only is the preferred embodiment of the utility model, and does not use for limiting the utility model, it should be pointed out that, for ordinary skilled person in the art, on the premise of not departing from the technical principle of the present application, can also make a number of improvements and variations, these improvements and variations also should be regarded as the protection scope of the utility model.

Claims

1. A burr-free heat-shrinkable sleeve comprising a sleeve body, characterized by: The sleeve body is formed by interlacing a plurality of polyester warp yarns and a plurality of anti-burr composite weft yarns, each of the anti-burr composite weft yarns comprising a polyolefin inner core material in the center and polyester wrapping yarns wrapped on the surface of the polyolefin inner core material.

2. A burr-free heat-shrinkable sleeve according to claim 1, characterized in that: Each of the anti-burr composite weft yarns is circumferentially wrapped around one turn to form a weave on each of the polyester warp yarns in turn.

3. A no-burrs heat-shrinkable sleeve according to claim 1, characterized in that: The polyester warp yarns, which do not undergo thermal contraction, are in the same axial direction as the sleeve body in the length direction.

4. A burr-free heat-shrinkable sleeve according to claim 1, characterized in that: The polyester wrapping yarns have a specification of 450-9000D, a single thickness of 0.1-0.5mm before thermal contraction, and a thermal contraction ratio of ≤85%.

5. A no-burrs heat-shrinkable sleeve according to claim 1, characterized in that: The axial distance between two adjacent polyester warp yarns in the axial direction is 45±3mm.

6. A no-burrs heat-shrinkable sleeve according to claim 1, characterized in that: The distance between two adjacent anti-burr composite weft yarns on the circumferential direction of the sleeve body is 1.2±0.3mm.

7. A no-burrs heat-shrinkable sleeve according to claim 1, characterized in that: The inner diameter of the sleeve body in the original state before thermal contraction, when being opened into a regular cylindrical shape, is 6-120mm.

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