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Views: 20 Author: Site Editor Publish Time: 2025-10-20 Origin: Site
In the beauty industry, empty cosmetic tin trays are used as basic packaging containers for powder products such as eye shadow, blush, and highlighter. Although they are small in size, their manufacturing process contains a series of precision processes. In particular, the "hot pressing technology" not only determines the molding quality of the tin tray, but also directly affects the appearance, stability and user experience of the final product. This article will take you to understand the specific process and key significance of hot pressing technology in the production process of empty cosmetic tin trays.
Hot pressing technology, as the name suggests, is an industrial processing method that uses high temperature and pressure to shape materials. In the production of empty cosmetic tin trays, this technology is usually used to heat and pressurize aluminum or tin sheets through molds to form them into our common concave discs, small square discs or special-shaped structures.
The entire hot pressing process generally includes the following steps:
Raw material preparation: Use high-quality aluminum foil or tin foil as raw material, the thickness is usually between 0.2~0.4 mm, which can not only ensure strength but also facilitate pressing and forming.
Cutting and feeding: Cut the rolled metal sheet into appropriate specifications and then feed it into the hot pressing forming equipment in sequence.
Heating and pressing: Heat the mold to a certain temperature (generally 120~180℃), and apply high pressure at the same time, so that the metal sheet is accurately pressed and formed under the combined effect of thermal expansion and contraction and mold shape. This step requires stable temperature control to prevent metal oxidation or deformation.
Cooling and demolding: The formed tin plate needs to be quickly cooled and shaped, and then removed from the mold to keep the edges smooth and the structure stable.
Subsequent processing: In order to improve the appearance and durability, the tin plate may also be polished, electroplated, anti-corrosion coated, etc.
High forming accuracy: Compared with cold pressing, hot pressing technology can effectively reduce metal rebound, ensure the flat edge and uniform size of the tin plate.
Adapt to various designs: The hot pressing mold can be quickly adjusted according to customized needs, so that tin plates of various shapes (round, oval, heart-shaped, etc.) can be accurately replicated to meet the needs of personalized beauty packaging.
Improve production efficiency: Automated hot pressing machines can achieve high-speed and stable production, suitable for large-volume OEM orders and fast delivery requirements.
Taking into account environmental protection and quality: Modern hot pressing equipment is usually equipped with energy-saving heating systems and exhaust gas recovery devices, taking into account environmental protection and cost control.
Although the empty makeup tin plate is small, it carries the texture and brand image of cosmetics. And hot pressing technology is the most important shaping soul behind it. With the continuous improvement of customization needs and environmental protection requirements, the future tin plate hot pressing process will also develop in a more intelligent, efficient and green direction. Understanding hot pressing is also understanding a brand's attitude towards quality.
