High-performance heat shrink tube

Abstract

The utility model discloses a high-performance heat shrink tube, which comprises a tube body, grooves are arranged on the tube wall of the tube body at equal intervals, the joints of the grooves and the tube wall are smooth surfaces, the side edges of the adjacent grooves are intersected to form bulges, and the bulges and the grooves are alternately arranged on the tube wall. The actual thickness of the pipe wall is increased through the grooves regularly distributed on the pipe wall and the smooth surface on the edge of the pipe wall, the strength of the pipe body is improved, the pipe body is prevented from being broken, and the smooth surface enables the inner and outer thermal shrinkage of the pipe body to be uniform and the fitting to be tighter. Protrusions formed between the grooves are firstly melted during heating to form a corrugated structure, the contact area of the pipe wall is increased during compression, gaps are filled with melt, the adhesiveness is greatly enhanced, and particularly, the performance is better at the extreme temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of high-performance heat shrink tubes, in particular to a high-performance heat shrink tube for use with a large temperature difference. Background Art

[0002] High-performance heat shrink tubing is a heat shrink tubing specially made of polyolefin material. It has the advantages of insulation, corrosion resistance, wear resistance, low melting point, waterproof sealing and high adhesion, and is widely used in the protection and sealing of wires and cables. Take PTFE high-performance heat shrink tubing as an example. It is made of polytetrafluoroethylene and has the characteristics of high temperature resistance, flame retardancy and semi-rigidity, and can adapt to extreme temperature environments. However, when encountering significant temperature changes, the inner wall of the high-performance heat shrink tubing is smooth and the adhesion after heat shrinkage is limited, which may cause the tube wall to peel off or separate. This situation is not limited to PTFE high-performance heat shrink tubing. High-performance heat shrink tubing made of other materials may also have the same problem when facing similar situations. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In order to solve the above-mentioned problems, the utility model provides the following technical solutions: a high-performance heat shrink tube includes a tube body, the tube wall of the tube body has grooves at equal intervals, the intersection of the grooves and the tube wall is a smooth surface, the side edges of adjacent grooves intersect to form protrusions, and the protrusions and grooves are alternately arranged on the tube wall.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] As a preferred solution of the high-performance heat shrink tube of the utility model, wherein: the wall thickness is from the smooth surface to the outer surface of the tube body.

[0007] As a preferred solution of the high-performance heat shrink tube of the utility model, the wall thickness accounts for at least 1 / 2 of the tube wall thickness.

[0008] As a preferred solution of the high-performance heat shrink tube of the utility model, the extended angle of the side of the groove is the same as the wall angle where the side of the groove intersects.

[0009] As a preferred solution of the high-performance heat shrink tube of the utility model, the groove and the protrusion are both isosceles triangles, the wall angle is an acute angle, and the extended angle is an obtuse angle.

[0010] The beneficial effects of the utility model are as follows: the regularly distributed grooves on the tube wall and the smooth surface of the edges increase the actual thickness of the tube wall, improve the strength of the tube body and prevent rupture, and the smooth surface makes the heat shrinkage of the tube body and the outside uniform and fits more tightly. The protrusions formed between the grooves melt first when heated to form a corrugated structure, which increases the contact area of ​​the tube wall when compressed, and the melt fills the gap, greatly enhancing the adhesion, especially performing better under extreme temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0012] Figure 1 This is an expanded view of the tube body of this embodiment.

[0013] Figure 2 It is a three-dimensional diagram of the tube body of this embodiment.

[0014] Figure 3 This is a three-dimensional comparison diagram of the inner wall of the tube in this embodiment before and after melting.

[0015] Figure 4 This is a comparison diagram before and after the inner wall of the tube in this embodiment melts.

[0016] Figure 5 It is a schematic diagram of the bonding thickness of the tube body and the tube wall in this embodiment.

[0017] In the figure; tube body 100, tube wall 101, pipe 101a, wall thickness 101b, virtual wall thickness 101c;

[0018] Groove 102, extended angle 102a, a smooth surface 102b, a collapsed surface 102c, a gap 102e;

[0019] Protrusion 103 and wall angle 103a. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] Example

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0024] Reference Figures 1 to 5 , is an embodiment of the utility model, which provides a high-performance heat shrinkable tube, including a tube body 100, wherein the tube wall 101 of the tube body 100 has grooves 102 at equal intervals, and the intersection of the grooves 102 and the tube wall 101 is a smooth surface 102b, and the side edges of adjacent grooves 102 intersect to form protrusions 103, and the protrusions 103 and the grooves 102 are alternately arranged on the tube wall 101.

[0025] The tube wall 101 of the tube body 100 is provided with grooves 102 at equal intervals. This is feasible in terms of technology. The production process of high-performance heat shrink tubes includes several steps: first, masterbatch granulation, which involves mixing and kneading raw materials with a set formula to produce masterbatch particles; second, extrusion molding, which involves putting the masterbatch into an internal mixer and extruding it into a tube through a single screw at a certain temperature; then, radiation cross-linking is performed to stabilize the structure of the tube; then, expansion molding is performed, which involves expanding the tube into a final shape under specific conditions; and finally, ancillary processes such as packaging and printing are performed;

[0026] During the extrusion process; Extruder: The masterbatch particles are heated and melted into a liquid state using an extruder. There is a screw inside the extruder that pushes the material forward and heats it by rotating.

[0027] Die: The molten material enters the die through the outlet of the extruder. The shape and size of the die determine the shape of the final product.

[0028] Molding: The material cools and solidifies in the mold to form a product of the desired shape. Extrusion molding can continuously produce products of consistent shape;

[0029] So you only need to make the corresponding shape on the mold, and the high-performance heat shrink tube will be the same shape as the mold after extrusion;

[0030] Specifically, in the design of high-performance heat shrink tubing, grooves 102 are distributed at equal intervals on the tube wall 101, and smooth surfaces 102b are formed at the intersection of these grooves and the tube wall. It is worth noting that the existence of the smooth surface 102b actually increases the actual thickness of the wall thickness 101b, while if there is no smooth surface, this area will become a thinner virtual wall thickness 101c, and this part is closer to the outer surface of the tube body 100. Therefore, the smaller the thickness of the tube wall 101, the worse the structural stability of the tube body 100, and it is easy to break. However, the provision of the smooth surface 102b not only enhances the overall strength of the tube body 100, but also enables the outer surface of the tube body and the tube wall 101 to shrink more evenly during the heat shrink process, ensuring the tightness of the tube body when it is close to the surface of the object.

[0031] In addition, protrusions 103 are formed at the intersection of the sides of adjacent grooves 102. These protrusions and grooves are arranged alternately on the tube wall 101, together forming a unique corrugated structure of the tube wall. It is particularly important that, since the surface of the protrusions 103 is relatively sharp, when the high-performance heat shrink tube is heated and melted, these tip parts will melt first, thereby forming a collapsed surface 102c. This feature causes the high-performance heat shrink tube to present a distinct corrugated shape when it is fully expanded. When the pipe 101a is compressed, this corrugated structure allows the tube wall 101 to have a larger contact area, thereby creating a gap 102e between adjacent parts. As the heat shrinking process proceeds, these gaps will be filled with the melted collapsed surface 102c material, significantly improving the bonding performance of the high-performance heat shrink tube. Especially in extreme temperature change environments, this design can ensure that the high-performance heat shrink tube maintains excellent sealing and durability, and effectively avoids performance degradation caused by environmental factors.

[0032] In implementation, the wall thickness 101b is from the smooth surface 102b to the outer surface of the tube body 100, and the wall thickness 101b occupies at least 1 / 2 of the thickness of the tube wall 101, so as to ensure the thickness of the tube wall 101 of the tube body 100;

[0033] In practice, the extended angle 102a of the side of the groove 102 is the same as the wall angle 103a where the side of the groove 102 intersects. The groove 102 and the protrusion 103 have the same shape after melting. The groove 102 has a smooth surface 102b. The top of the protrusion 103 forms a collapsed surface 102c after melting. The collapsed surface 102c has a shape similar to the smooth surface 102b after melting.

[0034] In practice, the groove 102 and the protrusion 103 are both isosceles triangles, the wall angle 103a is an acute angle, and the extended angle 102a is an obtuse angle. The acute angle of the wall angle 103a is more conducive to melting into the collapsed surface 102c, and the extended angle 102a is an obtuse angle, so that the smooth surface 102b is smoother and the structure of the high-performance heat shrink tube is more stable.

[0035] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to various modifications that still fall within the scope of the appended claims.

[0036] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention).

[0037] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A high performance heat shrink tube, characterized in that: The invention comprises a tube body (100), wherein grooves (102) are provided at equal intervals on a tube wall (101) of the tube body (100), wherein the intersection of the grooves (102) and the tube wall (101) is a smooth surface (102b), and the side edges of adjacent grooves (102) intersect to form protrusions (103), and the protrusions (103) and the grooves (102) are alternately arranged on the tube wall (101).

2. The high performance heat shrink tube according to claim 1, characterized in that: The area from the smooth surface (102b) to the outer surface of the tube body (100) is the wall thickness (101b).

3. The high performance heat shrink tube according to claim 2, characterized in that: The wall thickness (101b) accounts for at least 1 / 2 of the thickness of the tube wall (101).

4. The high performance heat shrink tube according to claim 1, characterized in that: The extended angle (102a) of the side of the groove (102) is the same as the wall angle (103a) where the side of the groove (102) intersects.

5. The high performance heat shrink tube according to claim 4, characterized in that: The groove (102) and the protrusion (103) are both isosceles triangles, the wall angle (103a) is an acute angle, and the extended angle (102a) is an obtuse angle.

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