Wet method for recycling ceiling glass fiber and application thereof

Abstract

This invention relates to the field of recycling and reuse technology, and discloses a method for recycling and reusing fiberglass in wet-laid ceilings and its application. The method comprises the following steps: collecting waste fiberglass mat generated during the wet-laid ceiling production process; cutting the waste fiberglass mat into sizes and shapes suitable for subsequent processing using a machine and pre-treating it; manually laying the pre-treated waste fiberglass mat onto a laminated non-woven fabric, then bonding it using a double-roller composite machine, and finally collecting it by winding it up. The waste fiberglass mat includes fiberglass mat used on non-automatic production lines and fiberglass mat for windows on automatic production lines. By collecting the waste fiberglass mat generated during the wet-laid ceiling production process, resource recycling is achieved, reducing the demand for new fiberglass mat, saving costs, and avoiding environmental pollution caused by discarding waste fiberglass mat, thus meeting environmental protection requirements and having good social benefits.

Description

Technical Field

[0001] This invention relates to the field of recycling and reuse technology, specifically to a wet-process method for recycling and reusing fiberglass ceilings and its application. Background Technology

[0002] Wet-laid fiberglass headliners are a commonly used material in the production of automotive interior components, and are used extensively in the production of common automotive interior parts such as headliners. They possess certain properties and performance characteristics that support the structure and function of automotive interiors, making them an indispensable component in automotive interior manufacturing. However, with the rapid development of the automotive industry and the continuous expansion of automotive interior component production scale, a large amount of waste fiberglass felt is generated during the wet-laid headliner production process.

[0003] Currently, the traditional method for handling waste fiberglass mats generated during wet-process ceiling production is to simply discard them, resulting in a waste of reusable resources. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wet-process method for recycling and reusing fiberglass ceilings and its application, solving the problem of direct disposal in traditional methods, which leads to the waste of reusable resources.

[0005] To achieve the above objectives, the present invention provides a method for recycling and reusing fiberglass in wet-laid ceilings, comprising the following steps:

[0006] Collect the waste fiberglass felt generated during the wet ceiling production process;

[0007] The waste fiberglass mat is cut into the size and shape suitable for subsequent processing by machine and pre-treated.

[0008] The pretreated waste fiberglass felt is manually laid onto the coated nonwoven fabric, then bonded together using a double-roller roll-to-roll laminating machine, and finally collected by a winding machine.

[0009] The above technical solution involves collecting the waste fiberglass mat generated during the wet-process ceiling production. This waste fiberglass mat can be used directly without repeated production, reducing production costs. Furthermore, the centralized storage of these waste materials avoids environmental pollution.

[0010] The collected waste fiberglass mat is machine-cut into materials that meet the required size and shape, so that the materials used later do not need to be processed again, reducing costs. The cut fiberglass mat is pre-treated to improve its bonding performance with subsequent materials.

[0011] The pre-treated waste fiberglass felt is manually laid onto the coated nonwoven fabric to ensure that each layer of fiberglass felt is evenly bonded and to avoid the formation of air bubbles and wrinkles. After the laying is completed, the surrounding environment needs to be kept clean to ensure the bonding quality between the nonwoven fabric and the fiberglass felt.

[0012] A double-roller roll-to-roll laminating machine is used to bond fiberglass mat and coated nonwoven fabric together. By setting the temperature and pressure of the double-roller roll-to-roll laminating machine, the two are completely bonded together, so that the bonding strength of the fiberglass mat and coated nonwoven fabric meets the requirements of use.

[0013] Finally, the composite material is rolled up and collected by a winding machine, making the final rolled material easy to store and transport, saving time in subsequent processing.

[0014] By recycling and reusing waste fiberglass mat, the recycling of resources is achieved, reducing the demand for new fiberglass mat and saving raw material costs.

[0015] Preferably, the waste fiberglass mat includes fiberglass mat used in non-automatic lines and windowed fiberglass mat used in automatic lines. The fiberglass mat used in non-automatic lines includes waste fiberglass mat generated in manual or semi-automatic production lines, and the windowed fiberglass mat used in automatic lines includes waste fiberglass mat generated in fully automated production lines.

[0016] Preferably, the fiberglass felt used on the non-automatic line is collected by manually cutting the top window fiberglass and collecting the beginning and end parts of the yarn. The fiberglass felt used on the automatic line is cut by a cutting machine and a blade to cut the edges of the top window fiberglass material and collect the beginning and end parts of the yarn. Finally, the fiberglass felt used on the non-automatic line and the fiberglass felt used on the automatic line are placed together.

[0017] Preferably, the machine includes a four-column hydraulic cutting machine and a laser cutting plate. The fiberglass mat used in the non-automatic line and the fiberglass mat used in the automatic line are placed together and cut on the four-column hydraulic cutting machine to form a preliminary shape. Then, the waste fiberglass mat is cut with a laser cutting plate to form the final shape.

[0018] Preferably, the preprocessing includes the following steps:

[0019] The cut waste fiberglass felt is soaked in the modification solution;

[0020] Remove the soaked waste fiberglass mat and dry it using a blower;

[0021] The modified liquid is composed of a renewable polymer and environmentally friendly additives, wherein the renewable polymer includes polyvinyl alcohol and the environmentally friendly additives include recycled glycerin and talc.

[0022] Preferably, the specific steps for manually laying the pretreated waste fiberglass mat onto the coated nonwoven fabric are as follows:

[0023] Spray water mist onto the surface of the nonwoven fabric before laying;

[0024] First, lay a layer of fiberglass mat using a layer-by-layer laying method, check whether it is flush with the alignment line on the coated nonwoven fabric, and press it down by hand;

[0025] Then press down the edges of the paving using a pressure roller or roller.

[0026] Preferably, the further lamination and bonding using a two-roller full-roll laminating machine specifically includes the following steps:

[0027] The already laid waste fiberglass felt and coated nonwoven fabric are placed in a two-roller roll laminating machine for lamination to form a composite component.

[0028] After the composite is completed, the composite parts are inspected for quality to ensure that there is no loosening or warping at the splicing and composite parts.

[0029] Preferably, the winding and collection process using a winding machine specifically includes the following steps:

[0030] The composite assembly is collected by winding it up using a winding machine.

[0031] Cut the collected and rolled composite parts into products of uniform size.

[0032] Preferably, the method further includes storing the product in a dry, well-ventilated environment that avoids direct sunlight.

[0033] Preferably, an application of a wet-process roof fiberglass recycling method is used to manufacture the lower layer material of the wet-process molded skeleton for automotive interior parts.

[0034] This invention provides a method for wet-process recycling and reuse of fiberglass ceiling panels and its application. It has the following beneficial effects:

[0035] 1. This invention collects waste fiberglass mat generated during the wet ceiling production process, realizing the recycling of resources, reducing the demand for new fiberglass mat, saving raw material costs, and avoiding environmental pollution caused by the disposal of waste fiberglass mat. It meets environmental protection requirements and has good social benefits.

[0036] 2. This invention uses a modified liquid to treat pretreated waste fiberglass mat, which not only enhances the bonding performance of the fiberglass mat, but also makes it flexible and impact-resistant, thereby improving the toughness and water resistance of the material. Compared with traditional material treatment methods, the use of modified liquid enhances the overall performance of the fiberglass mat and significantly improves its adaptability and durability in subsequent applications.

[0037] 3. This invention utilizes water mist spraying technology to increase moisture content during the laying of waste fiberglass mat, resulting in better adhesion. Compared to traditional dry laying methods, this method significantly reduces the risk of slippage between materials, thereby ensuring precise alignment and stability.

[0038] 4. This invention uses a double-roller laminating machine to bond waste fiberglass blocks with coated nonwoven fabric, and then collects them by winding them up, thus realizing the reprocessing of waste fiberglass felt. The whole method is simple, easy to operate, and easy to implement, making it suitable for promotion and application in automotive interior parts manufacturing enterprises. Attached Figure Description

[0039] Figure 1 This is a flowchart illustrating a wet-process method for recycling and reusing fiberglass ceilings and its application, according to the present invention. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] Please see the appendix Figure 1 This invention provides a method for recycling and reusing fiberglass in wet-laid ceilings, comprising the following steps:

[0042] Collect the waste fiberglass felt generated during the wet ceiling production process;

[0043] Waste fiberglass mat is cut into sizes and shapes suitable for subsequent processing by machine and then pre-treated.

[0044] The pre-treated waste fiberglass felt is manually laid onto the coated nonwoven fabric, then bonded together using a double-roller roll-to-roll laminating machine, and finally collected by a winding machine.

[0045] Specifically, waste fiberglass mat is usually unavoidable during the production process. It is necessary to collect the waste fiberglass mat generated during the wet-process ceiling production. By collecting the waste fiberglass mat generated during the wet-process ceiling production, it can be used directly without repeated production, reducing production costs. Furthermore, the centralized storage of these waste materials avoids environmental pollution.

[0046] According to the needs of subsequent processing, the collected waste fiberglass mat is machine-cut into materials that meet the size and shape requirements, so that the materials used later do not need to be processed again, reducing costs. After cutting, the fiberglass mat is pre-treated to improve its bonding performance with subsequent materials.

[0047] Afterwards, workers use special tools, such as shovels or scrapers, to manually lay the pre-treated waste fiberglass felt onto the coated nonwoven fabric, ensuring that each layer of fiberglass felt is evenly bonded and avoiding the formation of air bubbles and wrinkles. After the laying is completed, the surrounding environment needs to be kept clean, which can ensure the bonding quality between the nonwoven fabric and the fiberglass felt.

[0048] After the laying is completed, a double-roller roll-to-roll laminating machine is used to bond the fiberglass mat and the coated nonwoven fabric together. By setting the temperature and pressure of the double-roller roll-to-roll laminating machine, the two are completely bonded together, so that the bonding strength of the fiberglass mat and the coated nonwoven fabric meets the requirements of use.

[0049] Finally, the composite material is rolled up and collected by a winding machine, making the final rolled material easy to store and transport, saving time in subsequent processing.

[0050] Through the above steps, waste fiberglass mat is recycled and reused, realizing the circular use of resources, reducing the demand for new fiberglass mat, and saving raw material costs.

[0051] Waste fiberglass mat includes fiberglass mat used in non-automatic production lines and fiberglass mat used in automatic production lines. Fiberglass mat used in non-automatic production lines includes waste fiberglass mat generated in manual or semi-automatic production lines, while fiberglass mat used in automatic production lines includes waste fiberglass mat generated in fully automated production lines.

[0052] Specific non-automatic production lines and automatic production lines can both use fiberglass mat as raw material sources. For waste fiberglass mat from non-automatic production lines, there are often scraps generated during processes such as cutting and punching. These materials are usually discarded during production, resulting in resource waste. For automatic production lines, fiberglass is an unavoidable byproduct of fully automated production. These materials may be discarded in large quantities due to insufficient production precision, equipment failure, or other reasons, making them more economically valuable in resource recycling. Furthermore, by cutting and pre-treatment, the physical properties are preserved. Due to their thickness and fiber arrangement characteristics, these materials can provide a good support structure during the molding process.

[0053] For non-automatic lines, fiberglass mats are collected by hand-cutting the top window fiberglass and collecting the beginning and end of the yarn. For automatic lines, fiberglass mats are cut by a cutting machine and a blade to cut the edges of the top window fiberglass material and collect the beginning and end of the yarn. Finally, the fiberglass mats used for non-automatic lines and the fiberglass mats used for automatic lines are placed together.

[0054] Specifically, the fiberglass mat used in non-automatic production lines typically generates scraps and end pieces during production. These are collected manually by cutting the pieces. This manual cutting method offers greater flexibility, allowing workers to adjust collection strategies based on actual conditions to ensure the recovery of more valuable materials. The end pieces are also collected to ensure every piece of waste can be used in new production. For fiberglass mat used in automatic production lines, a cutting machine and blades are used to precisely cut the edges of the fiberglass mat in the skylight, making waste material collection more convenient and improving work efficiency. The end pieces of the cut yarn are also collected. The collected fiberglass mat from non-automatic and automatic production lines are placed together, allowing fiberglass mats from different sources to work together in subsequent processing.

[0055] The machine includes a four-column hydraulic cutting machine and a laser cutting plate. The fiberglass mat used in the non-automatic line and the fiberglass mat used in the automatic line are placed together on the four-column hydraulic cutting machine to cut them into a preliminary shape. Then, the waste fiberglass mat is cut into a final shape using a laser cutting plate.

[0056] Specifically, recycled fiberglass mats used in non-automatic production lines and those used in automatic production lines are placed on a four-column hydraulic cutting machine. The pressure generated by the machine cuts the two different types of fiberglass mats into preliminary shapes, preventing material displacement or deformation during the cutting process. After the preliminary shapes are formed, a laser blade is used for further cutting. Laser cutting technology enables the cutting of complex shapes, ensuring that the cut materials meet subsequent use requirements and resulting in smoother cut edges. This improves the convenience of subsequent processing, reduces the need for edge treatment, and allows operators to handle different types of waste fiberglass mats more flexibly, ensuring that the material quality meets production needs.

[0057] Preprocessing includes the following steps:

[0058] The cut waste fiberglass felt is soaked in the modification solution;

[0059] Remove the soaked waste fiberglass mat and dry it using a blower;

[0060] The modified liquid is composed of renewable polymers and environmentally friendly additives. The renewable polymers include polyvinyl alcohol, and the environmentally friendly additives include recycled glycerin and talc.

[0061] Specifically, the cut waste fiberglass felt is first soaked in a modifying liquid, allowing the components of the modifying liquid to penetrate into the fiber structure of the fiberglass felt. The modifying liquid is composed of renewable polymers and environmentally friendly additives. The renewable polymer can be polyvinyl alcohol, which has excellent adhesion and stability, ensuring good adhesion between the collected fiberglass felt and the coated nonwoven fabric. The environmentally friendly additives, such as glycerin, can enhance the bonding force with the fiberglass felt, improve its flexibility and water resistance, while talc can provide good filling effect, reduce the thickness of the material, and maintain a certain strength. After the modifying liquid fully penetrates into the interior of the fiberglass felt, it interacts with the fibers through capillary action to form a good complex structure, improving the adhesion and durability of the fiberglass felt. After soaking, the waste fiberglass felt is removed and dried with a fan to remove excess modifying liquid and prevent the performance impact caused by excessive moisture. The fan can evenly blow hot air into each part, accelerating the evaporation of moisture, so that the cured fiberglass felt can maintain better structural stability, and the internal structure of the pretreated fiberglass felt is solid.

[0062] The specific steps for manually laying the pretreated waste fiberglass felt onto the coated nonwoven fabric are as follows:

[0063] Spray water mist onto the surface of the nonwoven fabric before laying;

[0064] First, lay a layer of fiberglass mat using a layer-by-layer laying method, check whether it is flush with the alignment line on the coated nonwoven fabric, and press it down by hand;

[0065] Then press down the edges of the paving using a pressure roller or roller.

[0066] Specifically, before laying, a suitable amount of water mist needs to be sprayed on the surface of the coated nonwoven fabric to increase its moisture content and improve the adhesion between materials. Spraying water mist ensures that the fabric surface is not too dry, which helps with the subsequent bonding of materials and achieves a better adhesion effect. Next, the operation is carried out in layers. First, a layer of pre-treated waste fiberglass felt is laid. It is determined whether the laid fiberglass felt is flush with the alignment line on the coated nonwoven fabric to ensure the precise positioning of each layer of material and avoid the formation of an irregular structure. During the laying, the worker gently presses the fiberglass felt by hand to make good contact between the fiberglass felt and the nonwoven fabric and ensure good adhesion between the materials. By controlling the applied pressure, the bond between the two is made tighter. After the laying is completed, the operator needs to use a pressure roller or roller to press the edges of the laid area to enhance the adhesion at the edges and avoid air bubbles or delamination during the molding process. This helps to accelerate the bonding reaction between materials, thereby forming a stable composite material and improving the final quality.

[0067] The subsequent lamination and bonding using a two-roller full-roll laminating machine specifically includes the following steps:

[0068] The already laid waste fiberglass felt and coated nonwoven fabric are placed in a two-roller roll laminating machine for lamination to form a composite component.

[0069] After the composite is completed, the composite parts are inspected for quality to ensure that there is no loosening or warping at the splicing and composite parts.

[0070] Specifically, the pre-laid waste fiberglass mat and coated nonwoven fabric are placed in a two-roll laminating machine. The two-roll laminating machine applies pressure and heat simultaneously from two rollers to tightly bond the two materials. During this process, the distance between the rollers and the running speed need to be adjusted according to the thickness and characteristics of the materials to achieve the desired composite effect. During the pressing process, the lower roller is responsible for stabilizing the material position, while the upper roller applies a certain pressure to ensure good contact between the materials. This is existing technology and will not be elaborated further. This process forms a composite component. After lamination, the spliced ​​and composite parts are inspected to ensure that there is no loosening or warping, enabling the timely detection of potential problems and ensuring the performance and quality of the final product. For the use of this material in automotive interiors, it not only improves the overall strength of the product but also provides protection for long-term use.

[0071] The specific steps involved in collecting coils using a winding machine are as follows:

[0072] The composite assembly is collected by winding it up using a winding machine.

[0073] Cut the collected and rolled composite parts into products of uniform size.

[0074] Specifically, using a winding machine for collecting and winding effectively organizes materials and provides a precision foundation for subsequent cutting and application, ensuring the consistency and stability of the final product. The winding machine neatly winds up long rolls of material, and the rollers, by adjusting tension and speed, evenly and orderly wind the composite parts, preventing twisting or damage during the winding process, thus ensuring the integrity and quality of the composite parts. After winding, the wound composite parts need to be cut into products of uniform size for convenient subsequent application and improved material utilization. During the cutting process, mechanical cutters or laser cutting equipment can be used. High parallelism and consistency must be maintained during cutting to ensure that each piece of material meets production standards in terms of size. Simultaneously, the environment must be cleaned to avoid environmental factors affecting the materials. After collection and cutting, the operator should conduct a quality inspection of the cut products, checking whether the cut surfaces are flat and whether the dimensions meet the requirements, ensuring smooth entry into the next production step. This step helps ensure product quality and stability, further enhancing the final application effect. Through efficient winding and precise cutting by the winding machine, the finishing and productization of waste fiberglass felt and coated nonwoven fabric are realized.

[0075] The method also includes storing the product in a dry, well-ventilated environment that avoids direct sunlight.

[0076] Specifically, a dry environment effectively prevents the final product from becoming moldy, deteriorating, or structurally damaged due to moisture, ensuring the product's long-term stability and performance. Good ventilation helps maintain air circulation in the storage environment, further reducing the accumulation of mold and other harmful substances, improving product safety and hygiene standards. Furthermore, avoiding direct sunlight prevents fading and performance degradation caused by ultraviolet radiation, maintaining not only the product's appearance but also its mechanical properties and durability, thus extending its lifespan. This ensures the final product is in optimal condition before use, reducing quality problems caused by improper storage and ultimately improving product quality.

[0077] An application of a wet-process method for recycling and reusing fiberglass in headliners, used to manufacture the lower layer material of the wet-process molded skeleton for automotive interior parts.

[0078] Example 1

[0079] For waste fiberglass mats generated by manual or semi-automatic production lines, the fiberglass in the skylight is collected by hand cutting, and the beginning and end parts of the yarn are collected at the same time to ensure that no obvious impurities are mixed in.

[0080] For the glass fiber in the skylight produced by the fully automated production line, the edges are cut using a cutting machine and blade, and the beginning and end parts of the yarn are collected in the same way;

[0081] Waste fiberglass mat from the two sources mentioned above should be collected and placed in a designated collection area.

[0082] The waste fiberglass mat from the non-automatic production line and the automatic production line are placed together into a four-column hydraulic cutting machine for preliminary cutting to form a rough shape that meets the requirements of subsequent processing.

[0083] The fiberglass mat was then precisely cut using a laser cutting tool to obtain the final required size and shape.

[0084] A modified liquid is prepared by mixing a renewable polymer containing polyvinyl alcohol with environmentally friendly additives containing recycled glycerin and talc.

[0085] The cut waste fiberglass felt is completely immersed in the modification solution, allowing the modification solution to fully penetrate into the fiberglass felt.

[0086] Remove the soaked fiberglass mat and dry it with a fan to remove excess moisture;

[0087] Before laying, spray water mist evenly on the surface of the nonwoven fabric with coating;

[0088] The layer-by-layer laying method is adopted. First, a layer of pre-treated fiberglass felt is laid. Check whether it is flush with the alignment line on the coated non-woven fabric, and press it lightly by hand to make it initially adhere.

[0089] After laying, use a pressure roller or roller to press down the edges to ensure that the edges are tightly fitted;

[0090] The laid waste fiberglass felt and coated nonwoven fabric are fed together into a double-roller composite machine to form a composite.

[0091] After the composite is completed, the composite parts are inspected for quality, with a focus on the splicing and composite parts to ensure that there are no loose parts, warping edges, or other problems.

[0092] A winding machine is used to roll up and collect qualified composite parts for easy subsequent storage and transportation.

[0093] The rolled composite parts are cut into products of uniform size to meet the specifications of the lower layer material of the wet-formed skeleton of automotive interior parts.

[0094] Store the cut products in a dry, well-ventilated environment that avoids direct sunlight;

[0095] In contrast to Example 1, the waste fiberglass felt was directly buried underground to await degradation, which resulted in the need for remanufacturing and wasted raw material costs.

[0096] Experimental Table

[0097] Comparison Projects Example 1 Comparative Example Ecological pollution Releases approximately 0.5 kg of harmful substances. Avoid environmental pollution Decomposition Time It has existed for decades and requires long-term monitoring. Reprocessing and reuse to avoid landfilling Recovery rate none 85%～90% Resource conservation none Saving approximately 0.8 tons of raw materials per ton

[0098] By comparing the above tables, it can be seen that this method can reduce ecological pollution, reuse without decomposition time, and improve the recycling rate, thus achieving the effect of resource conservation.

[0099] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for recycling wet ceiling glass fibers, characterized in that, Includes the following steps: Collect the waste fiberglass felt generated during the wet ceiling production process; The waste fiberglass mat is cut into the size and shape suitable for subsequent processing by machine and pre-treated. The pretreated waste fiberglass felt is manually laid onto the coated nonwoven fabric, then bonded by a double-roller roll-to-roll laminating machine, and finally collected by a winding machine. The preprocessing includes the following steps: The cut waste fiberglass felt is soaked in the modification solution; Remove the soaked waste fiberglass mat and dry it using a blower; The modified liquid is composed of a renewable polymer and environmentally friendly additives, wherein the renewable polymer includes polyvinyl alcohol and the environmentally friendly additives include recycled glycerin and talc.

2. A method for recycling glass fibers from a wet ceiling according to claim 1, characterized in that, The waste fiberglass mat includes fiberglass mat used in non-automatic production lines and window fiberglass mat used in automatic production lines. The fiberglass mat used in non-automatic production lines includes waste fiberglass mat generated in manual or semi-automatic production lines, and the window fiberglass mat used in automatic production lines includes waste fiberglass mat generated in fully automated production lines.

3. A method for recycling glass fibers from a wet ceiling according to claim 2, characterized in that, The fiberglass felt used on the non-automatic line is collected by manually cutting pieces to gather the top window fiberglass and the beginning and end parts of the yarn. The fiberglass felt used on the automatic line is cut by a cutting machine and a blade to cut the edges of the top window fiberglass material and to gather the beginning and end parts of the yarn. Finally, the fiberglass felt used on the non-automatic line and the fiberglass felt used on the automatic line are placed together.

4. The method for recycling and reusing wet-process ceiling fiberglass according to claim 1, characterized in that, The machine includes a four-column hydraulic cutting machine and a laser cutting plate. The fiberglass mat used on the non-automatic line and the fiberglass mat used on the automatic line are placed together and cut on the four-column hydraulic cutting machine to form a preliminary shape. Then, the laser cutting plate is used to cut the waste fiberglass mat to form the final shape.

5. The method for recycling and reusing wet-process ceiling fiberglass according to claim 1, characterized in that, The specific steps for manually laying the pretreated waste fiberglass felt onto the coated nonwoven fabric are as follows: Spray water mist onto the surface of the nonwoven fabric before laying; First, lay a layer of fiberglass mat using a layer-by-layer laying method, check whether it is flush with the alignment line on the coated nonwoven fabric, and press it down by hand; Then press down the edges of the paving using a pressure roller or roller.

6. The method for recycling and reusing wet-process ceiling fiberglass according to claim 1, characterized in that, The subsequent lamination and bonding using a two-roller full-roll laminating machine specifically includes the following steps: The already laid waste fiberglass felt and coated nonwoven fabric are placed in a two-roller roll laminating machine for lamination to form a composite component. After the composite is completed, the composite parts are inspected for quality to ensure that there is no loosening or warping at the splicing and composite parts.

7. The method for recycling and reusing wet-process ceiling fiberglass according to claim 1, characterized in that, The specific steps for collecting the coiled material using a winding machine include: The composite assembly is collected by winding it up using a winding machine. Cut the collected and rolled composite parts into products of uniform size.

8. The method for recycling and reusing wet-process ceiling fiberglass according to claim 1, characterized in that, The method also includes storing the product in a dry, well-ventilated environment that avoids direct sunlight.

9. An application of a wet-process roof fiberglass recycling method for manufacturing the lower layer material of a wet-process molded skeleton for automotive interior parts.

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