A type of PTFE tape for auxiliary pipe sealing connection

Abstract

A type of PTFE tape for auxiliary pipe sealing connections includes, from the outside in, a PTFE layer with a thickness of 0.06-0.1 mm, the outer surface of which is pressed with continuous diamond-shaped anti-slip texture; an elastic memory layer made of shape memory polyurethane with a thickness of 0.08-0.12 mm; a glass fiber woven mesh layer with glass fiber monofilaments having a diameter of 5-10 μm and a thickness of 0.03-0.05 mm; and a sealing lubrication layer made of silicone grease with a thickness of 0.02-0.03 mm. A colored guide strip is provided on one edge of the PTFE tape, and the edge of the colored guide strip is further provided with serrated positioning teeth. This invention improves sealing durability, extends pipe sealing life due to its multi-layer composite structure, and increases installation efficiency. The guide strip and positioning teeth work together to shorten winding time and improve winding uniformity. It is suitable for various industrial and civil applications.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing technology, specifically to a PTFE tape for auxiliary pipeline sealing connections. Background Technology

[0002] PTFE tape is widely used in the installation of pipes requiring sealing, such as those for water supply, heating, drainage, fire protection, gas, and air conditioning. It is applied to pipe joints to enhance the airtightness of these connections. However, when sealing pipe joints, temperature and usage time can cause the PTFE tape to loosen at the connection point, affecting its sealing performance and potentially leading to leaks. Utility Model Content

[0003] The purpose of this invention is to provide a PTFE tape for auxiliary pipe sealing connections to address the aforementioned deficiencies.

[0004] A type of PTFE tape for auxiliary pipe sealing connections, comprising, arranged sequentially from the outside to the inside...

[0005] The PTFE layer has a thickness of 0.06-0.1mm, and the outer surface of the PTFE layer is pressed with continuous diamond-shaped anti-slip texture;

[0006] The elastic memory layer is made of shape memory polyurethane material with a thickness of 0.08-0.12mm;

[0007] The glass fiber woven mesh layer has a glass fiber monofilament diameter of 5-10μm and a glass fiber woven mesh layer thickness of 0.03-0.05mm.

[0008] The sealing and lubricating layer is made of silicone grease and has a thickness of 0.02-0.03 mm.

[0009] The raw material strip has a colored guide strip on one side edge, and the edge of the colored guide strip also has serrated positioning teeth.

[0010] Preferably, the depth of the rhomboid anti-slip texture is 0.01-0.02 mm, and the side length of the rhombus is 1-2 mm.

[0011] Preferably, the mesh size of the glass fiber woven mesh layer 3 is 0.1-0.2 mm, and its coverage on the surface of the elastic memory layer is 60%-70%. The glass fiber needs to be treated with a silane coupling agent (KH-560) to improve its compatibility with polyurethane.

[0012] Preferably, the inner surface of the sealing and lubricating layer is further provided with a PTFE micro powder layer, wherein the particle size of the PTFE micro powder is 1-5μm and the coating thickness is 0.01-0.02mm.

[0013] Preferably, the silicone grease layer is made of food-grade silicone grease.

[0014] Preferably, the total thickness of the raw material strip is 0.2-0.25 mm and the width is 10-20 mm.

[0015] Preferably, the tooth height of the serrated positioning tooth is 0.03 mm and the tooth pitch is 1 mm.

[0016] Preferably, the elastic memory layer is a polyether-type TPU with a phase change temperature of 40-60℃.

[0017] The advantages of this utility model are: improved sealing durability, extended pipeline sealing life due to the multi-layer composite structure, and improved installation efficiency; the guide strip and positioning teeth work together to shorten the winding time and improve the winding uniformity; it is suitable for various industrial and civil applications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a raw material belt with a PTFE micro powder layer;

[0020] Figure 3 This is a schematic diagram of the colored guide strip at the edge of the raw material conveyor belt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] As shown in the attached figure, a type of PTFE tape for auxiliary pipe sealing connection includes, from the outside to the inside, sequentially arranged...

[0027] PTFE layer 1, with a thickness of 0.06-0.1mm, has continuous diamond-shaped anti-slip texture pressed on its outer surface;

[0028] Elastic memory layer 2, which is made of shape memory polyurethane material with a thickness of 0.08-0.12mm;

[0029] The glass fiber woven mesh layer 3 has a glass fiber monofilament diameter of 5-10μm and a thickness of 0.03-0.05mm; the fiber skeleton prevents the raw material tape from deforming excessively under pressure and improves its tensile strength.

[0030] The sealing and lubricating layer 4 is made of silicone grease and has a thickness of 0.02-0.03mm. The silicone grease reduces the friction during winding, facilitates uniform tightening, and slowly penetrates and fills the micro gaps in the thread gaps.

[0031] The raw material tape has a colored guide strip 6 on one side edge, and the edge of the colored guide strip 6 also has serrated positioning teeth 7. During winding, the guide strip aligns with the starting end of the pipe thread, and the positioning teeth engage with the thread to prevent deviation during winding.

[0032] In another technical solution, the depth of the rhomboid anti-slip texture is 0.01-0.02mm and the side length of the rhombus is 1-2mm, which can enhance the friction with the thread and meet the basic requirements of sealing.

[0033] In another technical solution, the mesh size of the glass fiber woven mesh layer 3 is 0.1-0.2 mm, and its coverage on the surface of the elastic memory layer 2 is 60%-70%. The glass fiber needs to be treated with a silane coupling agent (KH-560) to improve its compatibility with polyurethane.

[0034] In another technical solution, the inner surface of the sealing and lubricating layer 4 is further provided with a PTFE micro powder layer 5, wherein the particle size of the PTFE micro powder is 1-5 μm and the coating thickness is 0.01-0.02 mm. The PTFE micro powder enhances the affinity with the metal surface.

[0035] In another technical solution, the silicone grease layer 4 is made of food-grade silicone grease.

[0036] In another technical solution, the raw material tape has a total thickness of 0.2-0.25mm, a width of 10-20mm, a length of 5-10m, and is rolled on a plastic mandrel.

[0037] In another technical solution, the tooth height of the serrated positioning tooth 7 is 0.03 mm and the tooth pitch is 1 mm, which is suitable for common pipe thread pitches.

[0038] In another technical solution, the elastic memory layer 2 is a polyether-type TPU with a phase change temperature of 40-60℃, which is suitable for everyday pipelines.

[0039] The above-described embodiments are only intended to illustrate the technical solution and features of this utility model, and are intended to enable those skilled in the art to implement them. They should not be used to limit the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model are within the scope of protection of this utility model. Anything not described in detail is prior art.

Claims

1. A raw tape for assisting a sealing connection of a pipe, characterized by, Including the sequential arrangement from the outside to the inside A PTFE layer (1) with a thickness of 0.06-0.1 mm, wherein the outer surface of the PTFE layer (1) is pressed with continuous diamond-shaped anti-slip texture; The elastic memory layer (2) is made of shape memory polyurethane material with a thickness of 0.08-0.12 mm; Glass fiber woven mesh layer (3), wherein the diameter of the glass fiber monofilament is 5-10μm and the thickness of the glass fiber woven mesh layer (3) is 0.03-0.05mm; The sealing and lubricating layer (4) is made of silicone grease and has a thickness of 0.02-0.03 mm. The raw material strip has a colored guide strip (6) on one side edge, and the colored guide strip (6) also has serrated positioning teeth (7) on its edge.

2. A raw tape for use in auxiliary pipe sealing connection according to claim 1, characterized in that, The depth of the diamond-shaped anti-slip pattern is 0.01-0.02mm, and the side length of the diamond is 1-2mm.

3. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The mesh size of the glass fiber woven mesh layer (3) is 0.1-0.2 mm, and its coverage on the surface of the elastic memory layer (2) is 60%-70%.

4. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The inner surface of the sealing and lubricating layer (4) is also provided with a PTFE micro powder layer (5), wherein the particle size of the PTFE micro powder is 1-5μm and the coating thickness is 0.01-0.02mm.

5. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The sealing and lubricating layer (4) is made of food-grade silicone grease.

6. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The total thickness of the raw material strip is 0.2-0.25mm, and the width is 10-20mm.

7. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The tooth height of the sawtooth positioning tooth (7) is 0.03 mm and the tooth pitch is 1 mm.

8. The raw tape for use in auxiliary sealing of a pipe joint according to claim 1, wherein The elastic memory layer (2) is a polyether-type TPU with a phase change temperature of 40-60℃.

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