Aluminum Coated Sheet for Red Wine Cap

At present, aluminum bottle cap material has been a popular choice for red wines. The production process of aluminum coated sheet is also relatively complex and strict, especially in the coating aspect. It is generally believed that in order to ensure its coating effect, the following aspects must meet certain requirements.

Raw Materials

Paint and aluminum sheet are the factors that most affect the quality of coating during the coating process. Due to the color difference between batches of paint, low paint fineness, low coating rate, poor match of the paint and solvent and the stratification will directly affect the coating effect and produce defects like unevenness, uneven film thickness, poor edge deflection, etc. Therefore, when selecting raw materials, strict control should be exercised.

Equipment

The coating line requires the coating equipment to be in good condition. The coating equipment is required to run smoothly without horizontal or vertical vibration, and the coating roller is required to be finely ground. The lateral jump of all rollers of the coating machine must be controlled within the allowable range, otherwise it will seriously affect the surface quality of the coating.

Manufacturing process

The coating process is closely related to the quality of coating. It is required to control the relative linear speed ratio of the coating roller, paint roller, metering roller and substrate within a certain range.

According to different systems and the film thickness of the coating products, a certain viscosity range should be set for the coating to ensure smooth coating. Lamination is a physical process, in which a layer of film and a layer of aluminum plate are pressed together under high temperature and high pressure. The advantages of the lamination process are that it is resistant to oil smoke.

The surface treatment process of the painted aluminum sheet

The painted aluminum sheet has topcoat, primer, and back-coat. The back-coat mainly plays an anti-oxidation role, which makes its service life longer. The surface of the alu sheet for closure is uniform and smooth, without obvious defects such as missing coating, shrinkage, scratches, and shedding. Welcome to leave message below to inquire what you need.

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