Manufacturing method for coated abrasive tool patterned product

Abstract

The invention discloses a manufacturing method for a patterned product of a coated abrasive tool. The manufacturing method sequentially comprises the steps of base material (1) preparation, pre-coating, primary drying, primer coating, sand planting, secondary drying, glue compounding, third-time drying, curing and flexing. Wherein the pre-coating comprises the following steps: coating an anti-contamination coating (2) containing silicone oil, a fluorine-containing organic compound and an auxiliary agent on the surface of a base material in advance according to a gap pattern, drying, and then coating a primer and planting sand. According to the invention, anti-contamination chemical components such as silicone oil and fluorine-containing organic compounds are coated on the surface of the base material in advance according to the gap pattern, so that the primer cannot be distributed on the gap pattern coated with the anti-contamination components or a small amount of the primer is distributed on the gap pattern coated with the anti-contamination components, but the primer can be easily stripped in the subsequent stripping process; during primer coating and sand planting, dominant module patterns are formed, the process is flexible and convenient, and rapid switching and free customization of various patterns can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing processes for patterned products, and particularly to a method for manufacturing a patterned product for coated abrasives. Background Art

[0002] In the coated abrasive manufacturing industry, with the growing market demand for product diversification, patterned coated abrasive products have received increasing attention. Traditional methods for achieving patterning, such as molding and transfer printing, all have many drawbacks. These methods often have strict requirements for equipment, requiring multiple sets of equipment to adapt to different patterns, and the more delicate the pattern, the higher the cost of the equipment. This situation has led to high production costs and difficult-to-improve production efficiency, unable to meet the large-scale and diversified market demands. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems of complex supporting equipment, high cost, and limited production efficiency in the existing patterning methods for coated abrasives, and to provide a method for manufacturing a patterned product for coated abrasives, which can achieve rapid pattern switching and free customization of coated abrasive patterns, with a simpler, more efficient, and more economical process, reducing the production cost of delicate patterns and improving economic benefits.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A method for manufacturing a patterned product for coated abrasives successively includes preparing a substrate, pre-coating, primary drying, primer coating, abrasive grain implantation, secondary drying, topcoat application, tertiary drying, curing, and kneading. Among them, in pre-coating, an anti-staining coating containing silicone oil, fluorinated organic compounds, and additives is pre-coated on the surface of the substrate according to an intermittent pattern. After drying, primer coating and abrasive grain implantation are carried out to ensure that the primer cannot be distributed or is slightly distributed in the intermittent pattern where the anti-staining component is coated, but can be easily peeled off in the subsequent peeling process; and during primer coating and abrasive grain implantation, an obvious module pattern is formed.

[0005] Further, the anti-staining coating includes silicone oil, fluorinated organic compounds, and additives, and their mass percentages are respectively: silicone oil 45 - 80%, fluorinated organic compounds 15 - 45%, and additives 3 - 15%.

[0006] Further, the drying temperature of the anti-staining coating is 100 - 250°C.

[0007] Further, the preferred drying temperature of the anti-staining coating is 120 - 220°C.

[0008] Further, the optimal drying temperature of the anti-staining coating is 160 - 200°C.

[0009] Furthermore, the pattern shape of the anti-staining coating is designed according to product requirements, including geometric shapes, artistic patterns or trademark logos.

[0010] Furthermore, the anti-staining coating is precisely replicated onto the surface of the substrate by means such as roll coating, spraying, printing, etc. according to the designed pattern.

[0011] Furthermore, the thickness of the anti-staining coating is adjusted according to the substrate type, the properties of the primer, and the actual usage requirements, and the coating thickness is precisely controlled by adjusting coating process parameters such as coating speed, coating pressure, and coating viscosity.

[0012] Furthermore, the drying process of the anti-staining coating is a separate intermittent operation or a linked operation.

[0013] Furthermore, in the bending process, a cleaning process is added to clean up a small amount of adhesive that has lost its bonding performance and some abrasives on the anti-staining coating.

[0014] The principle of the chemical composition of the anti-staining coating of the present invention is as follows: Silicone oil: As one of the key components of the anti-staining coating, silicone oil has an extremely low surface tension. This property makes it difficult for the primer to adhere to its surface, thus effectively preventing the primer from distributing in the pattern area covered by the anti-staining coating. For example, common silicone oils such as polydimethylsiloxane have a silicon-oxygen bond in their molecular structure, which gives the molecule good flexibility and low surface energy, greatly reducing the adhesion force with the primer. Fluorinated organic compounds: Fluorinated organic compounds also have excellent anti-staining properties due to their unique chemical structures. The fluorine atoms have extremely high electronegativity, making the surface energy of the fluorinated organic compound molecules extremely low, with extremely strong hydrophobic and oleophobic properties. Common fluorinated compounds such as perfluorooctanoic acid and perfluorooctane sulfonic acid can form a stable low-energy surface on the coating surface, further enhancing the repulsive effect on the primer, ensuring that the primer cannot firmly adhere to the coating area. Even if there is a small amount of adhesion, it can be easily removed in the subsequent peeling process. Other additives: To optimize the performance of the anti-staining coating, some auxiliary components may also be added. For example, a dispersant is used to ensure the uniform dispersion of silicone oil, fluorinated organic compounds, and other components in the coating system, avoiding agglomeration phenomena, and thus ensuring the consistency of the coating performance. A thickener can adjust the viscosity of the coating so that it can better maintain the pattern shape during the coating process and prevent the pattern from deforming due to the flow of the coating. In addition, some antioxidants, light stabilizers, etc. may also be added to improve the stability and durability of the coating under different environmental conditions.

[0015] In the technical solution of the present invention, by pre-coating chemical components such as silicone oil and fluorinated organic compounds that play an anti-staining role on the surface of the substrate according to a gap pattern in advance, it is ensured that the primer cannot be distributed or is slightly distributed on the gap pattern coated with the anti-staining component, but can be easily peeled off in the subsequent peeling process; when the primer is coated and abrasive grains are implanted, an obvious module pattern is formed. The process of the present invention is flexible and convenient, and can realize rapid switching and free customization of various patterns. Description of the Drawings

[0016] Figure 1 Schematic diagram of an abrasive product with a pre-coated pattern in the present invention; Figure 2 Abrasive product diagram with a pattern structure in an embodiment of the present invention. Detailed Description of the Invention Embodiment

[0017] To make the present invention clearer and more understandable, the following further describes a method for manufacturing a patterned product for abrasive products of the present invention in conjunction with the drawings. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] See Figure 1 , the abrasive product of the present invention includes a substrate 1, an anti-staining coating 2, a primer 3, a topcoat 4, and abrasive grains 5.

[0019] In this embodiment, a blended substrate of 180 g / m 2 is selected. First, an anti-staining coating containing a cross pattern of 10 g / m 2 is coated. The chemical components and their mass percentages of the anti-staining coating are 70% silicone oil, 20% fluorinated organic compound, and 10% dispersant. Then, it is dried at 180 °C for 20 min; Phenolic primer 80 g / m 2 is coated, and alumina 120# of 200 g / m 2 is electrostatically implanted with abrasive grains, and then the temperature is programmed to rise from 60 to 95 °C for 60 min; Then phenolic topcoat 150 g / m 2 is coated, the temperature is programmed to rise from 60 to 95 °C for 100 min, and then it is further cured at 118 °C for 12 h.

[0020] After curing, 90° and 45° three-way flexing is performed, and the residues on the anti-staining coating on the abrasive surface are removed to form Figure 2 the abrasive product.

[0021] In this embodiment, the pre-coating mainly applies a coating containing chemical components such as silicone oil and fluorinated organic compounds that play an anti-staining role on the substrate to prevent the undercoat from being applied on the pattern. It can effectively reduce the adhesion of the undercoat in the coating area, achieve the selective distribution of the undercoat, and is a key component for patterning. This enables the production of the undercoat application with the same process as traditional coating abrasives without the need for equipment modification at the undercoat area.

[0022] In this embodiment, the anti-staining coating contains the required pattern shapes; the anti-staining coating contains various pattern shapes designed according to product requirements, and these patterns will determine the pattern style of the final coated abrasive product, enabling diversified and personalized pattern customization. The pattern shape of the anti-staining coating is completely designed based on the pattern required for the final coated abrasive product. These patterns can be simple geometric shapes such as circles, squares, triangles, etc., or complex artistic patterns, trademark logos, etc. Through advanced coating technology, they are accurately replicated onto the substrate surface according to the designed patterns. For example, when using screen printing, a corresponding screen template is made according to the pattern design, and the anti-staining coating material is extruded onto the substrate through the screen template to form the required pattern shape. In addition, the thickness of the anti-staining coating has an important impact on the anti-staining effect and product performance. Generally, the coating thickness needs to be controlled within a certain range to ensure that it can effectively prevent the adhesion of the undercoat without negatively affecting the product's flexibility, abrasion resistance, and other properties. The specific thickness value will be adjusted according to the substrate type, undercoat characteristics, and actual usage requirements. For example, for a relatively thin and highly flexible substrate such as polyester film, the thickness of the anti-staining coating may be controlled between a few micrometers and more than ten micrometers; while for a relatively thick and hard substrate such as paper, the coating thickness can be appropriately increased, but generally it will not exceed dozens of micrometers. In actual production, the coating thickness can be precisely controlled by adjusting coating process parameters such as coating speed, coating pressure, and coating material viscosity.

[0023] After adopting the method of the present invention, rapid switching and free customization of the coated abrasive pattern can be achieved, the process is more concise and efficient, the production cost of fine patterns is reduced, and the economic benefits are improved.

[0024] In addition to the above embodiments, the present invention may also have other implementation manners. All technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A method for producing a patterned coated abrasive product, characterized in that: The method includes preparing a substrate (1), pre-coating, primary drying, primer coating, sanding, secondary drying, re-gluing, tertiary drying, curing and kneading. The pre-coating is to coat the anti-fouling coating (2) containing silicone oil, fluorine-containing organic compounds and additives on the surface of the substrate in advance according to the gap pattern, and then perform primer coating and sanding after drying.

2. The method for producing a patterned coated abrasive product according to claim 1, characterized in that: The anti-fouling coating (2) comprises silicone oil, fluorine-containing organic compounds and additives, wherein the mass percentages thereof are respectively: 45-80% silicone oil, 15-45% fluorine-containing organic compounds and 3-15% additives.

3. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: The drying temperature of the anti-fouling coating (2) is between 100 and 250°C.

4. The method for manufacturing a patterned coated abrasive product according to claim 3, characterized in that: The optimal drying temperature of the anti-fouling coating (2) is 120-220°C.

5. The method for manufacturing a patterned coated abrasive product according to claim 4, characterized in that: The optimal drying temperature of the anti-fouling coating (2) is 160-200°C.

6. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: The pattern shape of the anti-fouling coating (2) is designed according to product requirements, including geometric shapes, artistic patterns or trademark logos.

7. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: The anti-fouling coating (2) is accurately copied onto the surface of the substrate (1) according to a designed pattern by roller coating, spraying, printing, etc.

8. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: The thickness of the anti-fouling coating (2) is adjusted according to the type of substrate (1), the properties of the primer (3) and actual use requirements, and the coating thickness is precisely controlled by adjusting coating process parameters such as coating speed, coating pressure and coating viscosity.

9. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: The drying process of the anti-fouling coating (2) is a separate intermittent operation or a linked operation.

10. The method for producing a patterned coated abrasive product according to claim 1 or 2, characterized in that: In the kneading process, a cleaning process is added to clean a small amount of adhesive and part of the abrasive that have lost their adhesive properties on the anti-fouling coating (2).

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