This paper introduces a commonly used method for making polyurethane foam molds, which is to make faux stone panels by using the mold "mother mold" and a series of processing methods such as formulation, synthesis, Pu pouring, thermosetting and demoulding with polyester, polyether and other polyurethane materials.
Early moulds were made of clay, sand, iron sand and bronze; Modern molds are generally made of metal materials, such as iron, steel, aluminum alloy, magnesium alloy and so on. In the process of using such metal molds, the biggest drawback is that the design, drawing, production and process are complex before use, and the manufacturing of metal molds costs time, labor, materials, money and high cost; If you want to produce large quantities of products, you need to carve dozens or hundreds of molds, which will cost a lot of money, steel, time, energy and labor to meet the needs of producing Faux Stone panels; At the same time, in order to produce products with metal molds that have been made and carved, it is often necessary to match the corresponding equipment with the metal molds one-to-one to produce products
For example, to produce Faux Stone panels, it needs to design and make a "steel metal polyurethane foam mold", equipped with a silica gel molding machine, and produce a piece of plate with a set of equipment, a pair of metal tire molds; Or use one equipment and multiple molds (large equipment and small molds are available) to produce multiple products, resulting in the use of more equipment, more molds, more energy consumption and less product production output; It can not provide efficient product molds, and provide modern and efficient operations to produce a large number of the same, low-cost, standardized and high-quality products.
The mold of the PU foam faux stone panels made by this method has the advantages of simple manufacturing process, high work efficiency, low cost of making molds, and is convenient for making "polyurethane molds" in large quantities. The "polyurethane mold" made of the above polyurethane materials, processes and methods, first of all, has changed the disadvantages of time-consuming, labor-consuming, material consuming, money consuming and high cost of making the "steel metal mold" through complex processes such as design, drawing, carving, manufacturing and processing before using the "steel metal mold".
Secondly, we use "polyurethane mold" to replace "steel metal mold", simplify the mold production process, shorten the mold making time and reduce the mold manufacturing cost; Reduce die weight.
Thirdly, "polyurethane mold" has the advantages of lightness, easy demoulding, high strength, high wear resistance, long life, environmental protection, and adaptability to mass production of products on the assembly line, creating conditions for the industrialization of faux Stone panels. Specifically speaking -1, "polyurethane mold" has the high-tech characteristics of using modern polyurethane technology.
By adding an appropriate amount of different pigments to the polyurethane raw materials, the "polyurethane mold" with different colors can be produced. The "polyurethane mold" can be made by using the mold "mother mold" and a series of processing methods such as formulation, synthesis, Pu pouring and thermosetting with polyester, polyether and other polyurethane materials. The PU foam faux stone panels made by this method has the advantages of simple manufacturing process, high work efficiency and low cost
In the process of production practice, this method of copying the mold is widely used, but with the increase of copying times, the texture fineness of the silicone mold will gradually decrease, which will affect the quality and surface texture of the final Faux Stone panels. So how to get more foam molds by copying molds as much as possible on the premise of ensuring product quality is the problem we need to study.
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