Novel-structure fiber-reinforced base material for heat shrinkable tape penetrating through repaired mouth

Abstract

The utility model discloses a novel structure fiber reinforced base material for a penetrating repaired mouth heat shrinkable tape, which comprises reinforced mesh cloth, a first heat shrinkable sheet and a second heat shrinkable sheet, the first heat shrinkable sheet and the second heat shrinkable sheet are arranged on two sides of the reinforced mesh cloth, one side of the first heat shrinkable sheet and one side of the second heat shrinkable sheet, which are contacted with the reinforced mesh cloth, are embedded and filled in pores of the reinforced mesh cloth, and the first heat shrinkable sheet and the second heat shrinkable sheet are embedded and filled in the pores of the reinforced mesh cloth. The part, embedded into the reinforcing mesh cloth, of the first thermal shrinkage sheet and the part, embedded into the reinforcing mesh cloth, of the second thermal shrinkage sheet are mutually fused to form an embedded fusion layer. The utility model discloses a novel structure fiber reinforced base material for a penetrating repaired mouth heat shrinkable tape, which is firmer in use and bonding, not easy to break during installation and use, tidy and regular in shape after installation, good in sealing effect and strong in stability.

Description

Technical Field

[0001] This utility model relates to the technical field of heat-shrinkable anti-corrosion materials for steel pipe penetration repair, and in particular to a novel structural fiber-reinforced substrate for heat-shrinkable tape used for penetration repair. Background Technology

[0002] The original heat shrinkable tape for cross-linking repairs was manufactured using an extrusion stretching process, where a fiber-reinforced mesh was laminated onto one side of the polyethylene substrate during the molding process, resulting in a two-layer structure consisting of a polyethylene layer and a fiber-reinforced mesh. The heat shrinkable tape for cross-linking repairs, after being cross-linked by radiation, has an anti-corrosion hot melt adhesive coated on one side of the composite reinforcing mesh, thus producing a fiber-reinforced heat shrinkable tape for cross-linking repairs.

[0003] However, the structure of the substrate in the existing technology has many defects:

[0004] Fiber mesh composites are prone to looseness, making it difficult to control the irradiation dose.

[0005] 2. Longitudinal polymer fiber filaments that are not tightly bonded are prone to breakage during the baking process, and the heat shrink tape deforms greatly and becomes irregular after installation. Therefore, process control is difficult and quality fluctuates greatly. Utility Model Content

[0006] This invention overcomes the shortcomings of the prior art and provides a novel structural fiber-reinforced substrate for heat shrinkable tape used in patching. It has a stronger bonding force, is less prone to breakage during installation and use, and produces a neat and regular shape, good sealing effect, and strong stability after installation.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a novel structural fiber-reinforced substrate for heat shrinkable tape used for patching, comprising: a reinforcing mesh, and heat shrinkable sheet one and heat shrinkable sheet two disposed on both sides of the reinforcing mesh. The side of heat shrinkable sheet one and heat shrinkable sheet two that are in contact with the reinforcing mesh are embedded and filled into the pores of the reinforcing mesh, and the portion of heat shrinkable sheet one embedded in the reinforcing mesh and the portion of heat shrinkable sheet two embedded in the reinforcing mesh are fused together to form an embedded fusion layer.

[0008] In a preferred embodiment of the present invention, heat-shrinkable sheet one and heat-shrinkable sheet two cover the reinforcing mesh fabric, and neither side of the reinforcing mesh fabric that contacts heat-shrinkable sheet one and heat-shrinkable sheet two is exposed outside heat-shrinkable sheet one and heat-shrinkable sheet two.

[0009] In a preferred embodiment of this utility model, a hot melt adhesive coating layer is provided on the outer side of heat shrink sheet one and heat shrink sheet two.

[0010] In a preferred embodiment of this utility model, heat shrinkable sheet one and heat shrinkable sheet two are made of polyethylene sheets.

[0011] In a preferred embodiment of this invention, the warp and weft fibers in the reinforcing mesh are cross-woven and form multiple pores.

[0012] In a preferred embodiment of this utility model, the reinforcing mesh is a composite fiber reinforcing mesh, wherein the composite fiber is an organic fiber or an inorganic fiber.

[0013] In a preferred embodiment of this utility model, the inorganic fiber is glass fiber or carbon fiber;

[0014] Alternatively, the organic fiber may be one of aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, or polyimide fiber.

[0015] In a preferred embodiment of this invention, the composite fiber is polypropylene fiber.

[0016] In a preferred embodiment of this invention, the pores are polygonal.

[0017] In a preferred embodiment of this invention, the pores are rhomboid in shape.

[0018] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0019] This utility model discloses a novel structural fiber-reinforced substrate for heat shrinkable tape used in cross-cut joints. It provides stronger adhesion, is less prone to breakage during installation and use, and has a neat and regular shape, good sealing effect, and strong stability after installation.

[0020] 1. By embedding and bonding the reinforcing mesh fabric inside the mating sheet one and sheet two, the reinforcing mesh fabric and sheet one and sheet two are integrated into one.

[0021] 2. Hot melt adhesive is applied to the outer surfaces of sheet one and sheet two for a more secure installation and bonding.

[0022] 3. It is not easy for fibers to break during baking, and the installed shape is neat and regular, with good sealing effect and strong stability. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a structural schematic diagram of a novel fiber-reinforced substrate for heat shrinkable patching, as described in this application.

[0025] Figure 2 yes Figure 1 Enlarged structural diagram of section A in the middle;

[0026] Figure 3 This is a photograph of a novel structural fiber-reinforced substrate for heat shrinkable patching, as described in this application;

[0027] Among them, 1-heat shrink sheet one, 11-embedded fusion layer one, 2-reinforcing mesh, 3-heat shrink sheet two, 4-hot melt adhesive coating layer, 5-crosslinked fusion layer. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features therein are detailed descriptions of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features therein can be combined with each other.

[0029] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Example 1

[0030] like Figures 1-2 As shown, a novel structural fiber-reinforced substrate for heat-shrinkable patching tape includes: a reinforcing mesh 2, and heat-shrinkable sheets 1 and 3 disposed on both sides of the reinforcing mesh 2. The sides of heat-shrinkable sheets 1 and 3 that contact the reinforcing mesh 2 are embedded and filled into the pores of the reinforcing mesh 2. The portions of heat-shrinkable sheets 1 and 3 embedded in the reinforcing mesh 2 are fused together to form an embedded fusion layer. Furthermore, heat-shrinkable sheets 1 and 3 cover the reinforcing mesh 2, and neither side of the reinforcing mesh 2 that contacts heat-shrinkable sheets 1 and 3 is exposed beyond them. Example 2

[0031] like Figures 1-2 As shown, a novel structural fiber-reinforced substrate for heat-shrinkable patching tape includes: a reinforcing mesh 2, and heat-shrinkable sheets 1 and 3 disposed on both sides of the reinforcing mesh 2. The sides of heat-shrinkable sheets 1 and 3 that contact the reinforcing mesh 2 are embedded and filled into the pores of the reinforcing mesh 2. The portions of heat-shrinkable sheets 1 and 3 embedded in the reinforcing mesh 2 are fused together to form an embedded fusion layer. Furthermore, heat-shrinkable sheets 1 and 3 cover the reinforcing mesh 2, and neither side of the reinforcing mesh 2 that contacts heat-shrinkable sheets 1 and 3 is exposed beyond them.

[0032] Specifically, a hot melt adhesive coating layer 4 is also provided on the outer side of heat shrink sheet 1 and heat shrink sheet 3. In this embodiment, heat shrink sheet 1 and heat shrink sheet 3 are made of polyethylene sheets. Heat shrink sheet 1 and heat shrink sheet 3 are heat shrinkable sheets. Example 3

[0033] like Figures 1-3 As shown, a novel structural fiber-reinforced substrate for heat-shrinkable patching tape includes: a reinforcing mesh 2, and heat-shrinkable sheets 1 and 3 disposed on both sides of the reinforcing mesh 2. The sides of heat-shrinkable sheets 1 and 3 that contact the reinforcing mesh 2 are embedded and filled into the pores of the reinforcing mesh 2. The portions of heat-shrinkable sheets 1 and 3 embedded in the reinforcing mesh 2 are fused together to form an embedded fusion layer. Furthermore, heat-shrinkable sheets 1 and 3 cover the reinforcing mesh 2, and neither side of the reinforcing mesh 2 that contacts heat-shrinkable sheets 1 and 3 is exposed beyond them.

[0034] Specifically, a hot melt adhesive coating layer 4 is also provided on the outer side of heat shrink sheet 1 and heat shrink sheet 3. In this embodiment, heat shrink sheet 1 and heat shrink sheet 3 are made of polyethylene sheets. Heat shrink sheet 1 and heat shrink sheet 3 are heat shrinkable sheets.

[0035] Furthermore, the warp and weft fibers in the reinforcing mesh 2 are cross-woven, forming multiple pores. These pores are polygonal. In this embodiment, the pores are rhomboid. Furthermore, the reinforcing mesh 2 uses a composite fiber reinforcing mesh, with the composite fibers being organic or inorganic fibers. Further, the inorganic fibers are glass fiber or carbon fiber; or, the organic fibers are one of aramid fiber, orylon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, or polyimide fiber. In this embodiment, the composite fiber is polypropylene fiber. Example 4

[0036] A method for preparing a novel structural fiber-reinforced substrate for heat shrinkable patching tape, used in any of Examples 1 to 3, includes the following steps:

[0037] The novel fiber-reinforced substrate for heat shrinkable tape is constructed using a two-layer extrusion stretching process, similar to existing technologies. During the polyethylene substrate molding process, sheet 1 (single-sided) is composited with reinforcing mesh 2 (i.e., fiber-reinforced mesh). The extrusion thickness of sheet 1 (the first polyethylene substrate layer) is controlled to 60% of the required thickness. After the double-layer structure is extruded, sheet 2 (the second polyethylene substrate layer) is then composited onto one side of the composite reinforcing mesh 2 using an extrusion stretching process. The composite substrate material, in a molten state, fuses with the first extruded substrate material through the mesh openings of the composite reinforcing mesh 2 at high temperature, firmly bonding the composite reinforcing mesh 2 between the two sheets 1 and 2, forming a multi-layered fiber-reinforced heat shrinkable tape substrate.

[0038] Working principle:

[0039] This utility model discloses a novel structural fiber-reinforced substrate for heat shrinkable tape used for patching. The reinforcing mesh 2 (i.e., fiber mesh) is inlaid and composited inside the mating sheets 1 and 3, making the reinforcing mesh 2, sheets 1 and 3 integrated. The surface of this novel structural fiber-reinforced substrate for heat shrinkable tape is smooth, eliminating the problem of loose mesh and resulting in a high yield. Hot melt adhesive is applied to the outer surfaces of sheets 1 and 3, strengthening the bond. During use, fiber breakage during baking is less likely. After installation, the heat shrinkable tape made from this novel structural fiber-reinforced substrate exhibits a neat and regular shape, good sealing effect, and strong stability.

[0040] Based on the preferred embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the claims.

Claims

1. A novel structural fiber-reinforced substrate for use with heat-shrinkable patching tape, characterized in that, include: The reinforcing mesh (2) and heat shrinkable sheet one (1) and heat shrinkable sheet two (3) are disposed on both sides of the reinforcing mesh (2). The side of heat shrinkable sheet one (1) and heat shrinkable sheet two (3) that are in contact with the reinforcing mesh (2) are embedded and filled into the pores of the reinforcing mesh (2). The portion of heat shrinkable sheet one (1) embedded in the reinforcing mesh (2) and the portion of heat shrinkable sheet two (3) embedded in the reinforcing mesh (2) are fused together to form an embedded fusion layer.

2. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 1, characterized in that: The heat-shrinkable sheet one (1) and the heat-shrinkable sheet two (3) cover the reinforcing mesh (2), and neither side of the reinforcing mesh (2) that contacts the heat-shrinkable sheet one (1) and the heat-shrinkable sheet two (3) is exposed outside the heat-shrinkable sheet one (1) and the heat-shrinkable sheet two (3).

3. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 2, characterized in that: The outer sides of the heat shrink sheet one (1) and the heat shrink sheet two (3) are provided with a hot melt adhesive coating layer (4).

4. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 3, characterized in that: The heat shrinkable sheet one (1) and heat shrinkable sheet two (3) are made of polyethylene sheets.

5. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 4, characterized in that: The warp and weft fibers in the reinforcing mesh (2) are cross-woven and form multiple pores.

6. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 5, characterized in that: The reinforcing mesh (2) uses a composite fiber reinforcing mesh, and the composite fiber is an organic fiber or an inorganic fiber.

7. A novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 6, characterized in that: The inorganic fibers used are glass fibers or carbon fibers; Alternatively, the organic fiber may be one of aramid fiber, orlon fiber, polyester fiber, nylon fiber, vinylon fiber, polypropylene fiber, or polyimide fiber.

8. A novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 6, characterized in that: The composite fiber is made of polypropylene fiber.

9. The novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 1, characterized in that: The pores are polygonal.

10. A novel structural fiber-reinforced substrate for heat-shrinkable patching tape according to claim 9, characterized in that: The pores are rhomboid in shape.

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