Melamine Basin Mold 2

The melamine basin mold is known for its exceptional glossiness, which can directly endow the formed basin with a mirror-like fine texture. The material selection and structural design of the mold are all centered around the core requirements of "high-gloss forming and stable durability". The following is a detailed introduction to the material, core advantages, and benefits of using this mold.

I. Core Materials

As the core equipment for forming melamine basins, the material of the mold directly determines the glossiness of the basin and the durability of the mold itself. Among them, the surface treatment of the cavity is a key factor affecting the glossiness of the formed basin. The specific material combination is as follows:

1. Cavity/Core Main Material (Core Load-bearing Forming Part)

Conventional preference: 718H/P20 pre-hardened steel, with a hardness of HRC 28–35, it has excellent mirror-polishing performance and machinability, allowing for easy grinding of a smooth and fine cavity surface. It is suitable for medium-batch high-gloss melamine basin production and offers outstanding cost-effectiveness.

High-end upgrade: S136/H13 quenched steel, with hardness increased to HRC 45–50 after quenching, offers enhanced wear resistance, corrosion resistance, and thermal stability. It can withstand long-term high-temperature and high-pressure forming conditions, is less prone to wear and deformation, and is suitable for the production of large quantities of high-gloss sink basins with high requirements.

1. Super wear-resistant model: Made of Cr12MoV cold work die steel, it features excellent compressive and wear resistance, suitable for long-term continuous production. The cavity wears extremely slowly, maintaining a high-gloss forming effect for a long time and extending the overall service life of the mold.

2. Surface treatment (key process for glossiness)

Mirror polishing: The cavity surface undergoes precise mirror polishing treatment, with a roughness Ra ≤ 0.05 μm, free of any fine scratches or blemishes. After forming, the surface of the sink can present a glass-like high-gloss texture, with uniform and bright glossiness.

Gas nitriding treatment: A dense nitrided layer of 5–10 μm is formed on the surface of the cavity, with a surface hardness reaching HV 800–1000. This not only enhances the wear resistance of the mold but also effectively prevents sticking and facilitates demolding, avoiding scratches on the surface of the sink when demolding. It can maintain a high-gloss state even after long-term use.

High-temperature release coating (optional): An additional spray of Teflon or high-temperature release coating can be applied to further optimize the demolding effect, reduce surface friction and scratches on the basin, and ensure that the glossiness of each molded product remains highly consistent.

3. Auxiliary Structure Materials

To ensure the opening and closing accuracy and forming stability of melamine basin molds, guide pins and guide bushes are made of SUJ2 bearing steel or 45# steel to prevent mold misalignment and surface defects on the basin. The heating system is equipped with high-temperature resistant ceramic heating plates to ensure uniform mold temperature and further guarantee the consistency of the basin's glossiness.

II. Core Advantages of Melamine Basin Molds (Focusing on High Gloss and Practical Performance)

High-gloss texture stands out: Relying on precise mirror-polishing technology and high-quality base materials, the melamine washbasin after molding has no ripples, no shrinkage marks, and no pockmarks on its surface. Its glossiness can reach over 90°, with a texture comparable to that of ceramics and an appearance far superior to that of ordinary washbasins.

Strong forming stability: It can stably withstand hot pressing conditions of 150–200℃ and tens of MPa. During long-term production, the mold is not prone to deformation or collapse, ensuring that the size accuracy and surface gloss of each basin are highly consistent.

Extra-long service life: The high wear-resistant base material combined with nitriding strengthening treatment results in extremely slow cavity wear. Under normal usage conditions, it can complete hundreds of thousands of molding operations, significantly reducing the frequency of mold changing and repair, and lowering the risk of production interruption.

Efficient and smooth demolding: The reasonable parting line design combined with the demolding coating makes the basin easy to remove after molding, without sticking to the mold or scratching the surface. This effectively improves the product yield rate, speeds up the production pace, and is suitable for large-scale production.

Design flexibility and adaptability: Supports single cavity/multi-cavity, split type, complex curved surface and other customized designs. The mold structure can be adjusted according to the shape requirements of different washbasins, ensuring both high-gloss finish and functional practicality of the washbasin.

III. Core Benefits of Melamine Washbasin Molds

1. Benefits for washbasin products (enhancing product competitiveness)

Dual excellence in appearance and texture: The high-gloss mirror surface is smooth and flat, significantly enhancing the grade of the bathroom space. Compared with ordinary washbasins, it has greater visual appeal and a texture comparable to that of ceramics, meeting the demands of high-end decoration.

Durable and easy to clean: The melamine washbasin formed by the mold is hard, scratch-resistant, acid and alkali resistant, and has strong anti-fouling properties. It only requires simple wiping during daily use to maintain cleanliness. It is less likely to lose its luster or turn yellow over a long period of use, and has a longer service life.

Safe and lightweight: Melamine resin is non-toxic and odorless, meeting food-grade standards, making the basin safer to use. At the same time, it is over 30% lighter than ceramic basins, facilitating installation and transportation, being less prone to damage, and reducing transportation and installation costs.

2. Benefits for the production end (cost reduction, efficiency improvement)

High production efficiency: One-time hot pressing and forming, short production cycle, suitable for large-scale batch production. Compared with the production of ceramic washbasins, the production time per unit product is significantly reduced, enhancing overall production capacity.

Low comprehensive cost: The mold has a long service life, simple maintenance, and no frequent mold repair or replacement is needed in daily operation. Meanwhile, the product yield rate is high, reducing waste of raw materials and significantly lowering the comprehensive production cost.

Strong controllability of quality: The high precision of the molds ensures that the size, appearance and glossiness of each washbasin are highly consistent, reducing the rate of defective products, enhancing the product reputation and strengthening market competitiveness.

IV. Conclusion

With the bathroom industry's transformation towards high-end, environmental-friendly and intelligent products, as well as the continuous improvement of national standards related to melamine materials, the melamine washbasin mold industry is embracing new development opportunities. At the same time, it is also facing higher quality and technical requirements. Jiutai Molds has always adhered to the original aspiration of "technological innovation and quality as the soul", delved into environmental-friendly and intelligent mold technology, and created mold products that are of high quality, high cost performance and environmental friendliness.

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