PES hot melt adhesive net structure

Abstract

The utility model relates to the technical field of hot melt adhesive materials, and discloses a PES (Polyether Sulfonate) hot melt adhesive net structure, which comprises a three-dimensional cross-linked node layer formed by a melt-blowing process, the node spacing is 50-200mu m, the porosity is in gradient distribution, the high porosity of the surface layer of the three-dimensional cross-linked node layer is 85%, the melting is accelerated, the moderate porosity of the inner layer is 70%, and the bonding area is increased; the composite fiber structure layer is composed of a plurality of PES fibers arranged in parallel, and the fibers are bonded through a hot melt adhesive to form a net-shaped structure. According to the utility model, by optimizing the three-dimensional cross-linking node layer and the composite fiber structure layer, the bonding strength is obviously improved, and the adhesive force to a smooth surface is enhanced; the washing resistance is greatly improved, and stable bonding is still kept after multiple times of washing; the multifunctional coating endows the material with antibacterial, moisture-absorbing and other characteristics, widens the application field, is suitable for various complex environments, improves the comprehensive performance of the product, and prolongs the service life.

Description

Technical Field

[0001] This utility model relates to the field of hot melt adhesive materials technology, specifically a PES hot melt adhesive mesh structure. Background Technology

[0002] PES hot melt adhesive is a type of hot melt adhesive made from polyethersulfone (PES). PES is a high-performance engineering plastic with excellent high-temperature resistance, chemical corrosion resistance, and mechanical strength. When PES hot melt adhesive is heated to a certain temperature, the intermolecular forces decrease, and the adhesive becomes viscous, allowing it to be applied or bonded to materials via hot melting. During cooling, it reforms into a solid state, achieving adhesion.

[0003] Traditional PES hot melt adhesives suffer from the following drawbacks: insufficient adhesive strength (low adhesion to smooth surfaces such as metal, leading to easy detachment); poor washability (significantly deteriorates adhesive performance after repeated washing); and limited functionality (lacking additional functions such as antibacterial and moisture-absorbing properties). To address these shortcomings, this invention improves adhesive strength and washability by optimizing the three-dimensional cross-linked node layer and composite fiber structure layer, and introduces a multifunctional coating to impart antibacterial and moisture-absorbing properties, thus overcoming the deficiencies of traditional PES hot melt adhesives. Utility Model Content

[0004] The purpose of this invention is to provide a PES hot melt adhesive mesh structure that solves the technical problems of insufficient bonding strength, poor water resistance, and limited functionality of traditional PES hot melt adhesive, thereby achieving the effects of improving bonding strength, enhancing water resistance, and multifunctionality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a PES hot melt adhesive mesh structure, comprising a three-dimensional cross-linked node layer formed by melt-blowing process, with a node spacing of 50-200μm and a gradient distribution of porosity. The surface layer of the three-dimensional cross-linked node layer has a high porosity of 85% to accelerate melting, while the inner layer has a moderate porosity of 70% to increase the bonding area.

[0006] It also includes a composite fiber structure layer, which is composed of multiple parallel PES fibers bonded together with hot melt adhesive to form a mesh structure. The fiber diameter is 10-50μm, the spacing is uniform, which enhances the overall stability, and the hot melt adhesive is evenly distributed.

[0007] It also includes a hot melt adhesive coating and a support layer. The coating thickness is 5-20μm and it is uniformly covered on the surface of the composite fiber structure layer to ensure that the coating is tightly bonded to the fiber.

[0008] Preferably, the surface layer is made of ultra-fine fiber material to enhance tensile strength, ensure uniform heat conduction, and improve overall adhesion performance, while the inner layer is made of high-density fiber material with a porosity gradient transition to optimize the heat conduction path and ensure synergistic effect between the inner and outer layers.

[0009] Preferably, the coating material used in the hot melt adhesive coating is a high-adhesion hot melt adhesive, which improves the adhesion between the coating and the substrate.

[0010] Preferably, the support layer is made of a highly elastic material with a thickness of 0.5-2mm, providing good support, effectively dispersing stress, preventing coating peeling, and improving durability.

[0011] This invention provides a PES hot melt adhesive mesh structure. It has the following beneficial effects:

[0012] (1) This utility model significantly improves the bonding strength by optimizing the three-dimensional cross-linked node layer and composite fiber structure layer, and enhances the adhesion to smooth surfaces; the water washability is greatly improved, and the bonding remains stable even after multiple washes; the multifunctional coating gives the material antibacterial, moisture-absorbing and other properties, broadens the application field, is suitable for a variety of complex environments, improves the overall performance of the product, and extends its service life.

[0013] (2) This utility model achieves high-strength bonding and excellent water resistance through the synergistic effect of the three-dimensional cross-linked node layer and the composite fiber structure layer. The tight combination of the hot melt adhesive coating and the support layer further enhances the stability and durability of the overall structure, effectively solving the shortcomings of traditional PES hot melt adhesive. Attached Figure Description

[0014] Figure 1 This is a mesh diagram of the PES hot melt adhesive of this utility model;

[0015] Figure 2 This is a schematic diagram of the PES hot melt adhesive mesh structure of this utility model;

[0016] Figure 3 This is a performance test view of the present invention.

[0017] In the figure: 3D cross-linked node layer 21, composite fiber structure layer 22, hot melt adhesive coating 23, support layer 24. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] Addressing the shortcomings of traditional PES hot melt adhesives, such as insufficient bonding strength, poor water resistance, and limited functionality, this invention provides a preferred embodiment of a PES hot melt adhesive mesh structure, for example... Figure 1-3 As shown: A PES hot melt adhesive mesh structure includes a three-dimensional cross-linked node layer 21 formed by melt-blowing process, with a node spacing of 50-200μm and a gradient porosity distribution. The surface layer of the three-dimensional cross-linked node layer 21 has a high porosity of 85%, which accelerates melting, while the inner layer has a moderate porosity of 70%, which increases the bonding area. The surface layer is made of ultra-fine fiber material, which enhances tensile strength, ensures uniform heat conduction, and improves overall adhesion performance. The inner layer is made of high-density fiber material with a gradient porosity transition, which optimizes the heat conduction path and ensures the synergistic effect of the inner and outer layers.

[0021] It also includes a composite fiber structure layer 22, which is composed of multiple parallel PES fibers. The fibers are bonded together with hot melt adhesive to form a mesh structure. The fiber diameter is 10-50μm, the spacing is uniform, which enhances the overall stability and the hot melt adhesive is evenly distributed.

[0022] It also includes a hot melt adhesive coating 23 and a support layer 24. The coating thickness is 5-20μm and it is uniformly covered on the surface of the composite fiber structure layer 22 to ensure that the coating and the fiber are tightly bonded. The coating material used in the hot melt adhesive coating 23 is a high-adhesion hot melt adhesive, which improves the adhesion between the coating and the substrate. The support layer 24 is made of a high-elasticity material with a thickness of 0.5-2mm, which provides good support, effectively disperses stress, prevents coating peeling, and improves durability.

[0023] Through the synergistic effect of the three-dimensional cross-linked node layer 21 and the composite fiber structure layer 22, high-strength bonding and excellent water resistance are achieved. The tight bonding between the hot melt adhesive coating 23 and the support layer 24 further enhances the stability and durability of the overall structure, effectively solving the shortcomings of traditional PES hot melt adhesive.

[0024] Three-dimensional cross-linked nodes: node spacing 50-200μm, formed by melt-blowing process;

[0025] Gradient porosity: 85% porosity in the surface layer and 70% porosity in the inner layer;

[0026] Composite fiber: 3wt% bamboo charcoal fiber added, thickness 50μm.

[0027] Preparation process:

[0028] Raw material modification: PES resin is blended with terpene resin and phenolic resin (ratio 100:18:3);

[0029] Meltblown molding: Temperature 220℃, airflow pressure 0.8MPa, forming a cross-linked network;

[0030] UV curing: wavelength 365nm, time 10s, to enhance structural stability.

[0031] Key performance: Bond strength: ≥15 N / cm for aluminum alloys 2 (ASTM D3763);

[0032] Water washability: Strength retention rate >90% after 30 washes at 40℃;

[0033] Antibacterial rate: >99% kill rate of Escherichia coli after 24 hours of contact.

[0034] Preparation of PES three-dimensional cross-linked hot melt adhesive web

[0035] Raw material ratio: 100 parts PES resin, 18 parts terpene resin, 3 parts phenolic resin, 8 parts dibutyl phthalate, 0.5 parts SEBS;

[0036] Meltblown process: temperature 220℃, nozzle width 3.2m, airflow pressure 0.8MPa;

[0037] UV curing: wavelength 365nm, time 10s. Performance tests are shown in the table.

[0038] By optimizing the raw material ratio and process parameters, the bonding strength and water resistance of hot melt adhesive mesh have been significantly improved, ensuring that it can maintain excellent performance in complex environments and meet the needs of high-end applications.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PES hot melt glue web structure comprising a three-dimensional crosslinked node layer (21) formed by melt blowing process, node spacing 50-200 μm, porosity gradient distribution, characterized in that: The surface layer of the three-dimensional cross-linked node layer (21) has a high porosity of 85%, which accelerates melting, and the inner layer has a porosity of 70%. It also includes a composite fiber structure layer (22), which is composed of multiple parallel PES fibers. The fibers are bonded together by hot melt adhesive to form a mesh structure. The fiber diameter is 10-50μm and the spacing is uniform. It also includes a hot melt adhesive coating (23) and a support layer (24), with a coating thickness of 5-20 μm, which are uniformly covered on the surface of the composite fiber structure layer (22).

2. The PES hot melt adhesive net structure according to claim 1, characterized in that: The outer layer is made of ultra-fine fiber material, and the inner layer is made of high-density fiber material, with a gradient transition in porosity.

3. The PES hot melt adhesive web structure of claim 1, wherein: The coating material used for the hot melt adhesive coating (23) is a high-adhesion hot melt adhesive.

4. The PES hot melt adhesive web structure of claim 1, wherein: The support layer (24) is made of a highly elastic material with a thickness of 0.5-2mm.

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