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Why does acrylic sheet have different thicknesses

Update:10-01-2020
Summary:

Generally speaking, the tolerance of the acrylic plate […]

Generally speaking, the tolerance of the acrylic plate refers to the uneven thickness of the plate, which is particularly obvious in the cast plate.

Acrylic cast plate: The cast plate is formed by a casting process. According to the image, the casting process is like making tofu. Soy milk is poured into an outer frame mold, and then it is pressed by a plate. The solidification and molding becomes tofu. This process can make very thick plates, but the tolerance will be relatively bigger. The extrusion plate is mechanically extruded. The extrusion process is like extruding a dumpling skin between two metal rollers. The thickness is relatively uniform, but the thicker plate cannot be extruded. The thickest plate in China is usually below 15mm.

This is related to the production of the casting plate itself. Since the casting plate is an acrylic panel formed by melting and melting acrylic particles, it is inevitable that the thickness of the casting will be different.

Casting plate tolerance: Tolerance for acrylic products with a thickness of 2mm is ± 0.4mm; Tolerance for acrylic products with a thickness of 3mm is ± 0.5mm; Tolerance for acrylic products with a thickness of 4mm is ± 0.6mm; For acrylic products with a thickness of 5mm The tolerance is ± 0.7mm; the tolerance of acrylic products with a thickness of 6mm is ± 0.8mm; the tolerance of acrylic products with a thickness of 7mm is ± 1mm; the tolerance of acrylic products with a thickness of 10mm or more will be more than ± 2mm. Therefore, as the thickness of acrylic products increases, the tolerances of the cast plate will become larger and larger. The tolerance of the acrylic products of the extruded plate can be controlled within ± 0.1mm, and the acrylic plates have tolerances, which is related to the material. Therefore, if others say that acrylic plates have no tolerance, it is incorrect.

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