1. Acrylic has high mechanical strength
The relative molecular mass of polymethyl methacrylate is around 2 million, which is a long-chain macromolecular compound. And chains that form molecules are very soft. Therefore, the strength of polymethyl methacrylate is relatively high, and its tensile and impact resistance are 7 to 18 times higher than ordinary glass. There is a kind of polymethyl methacrylate that has been heated and stretched, in which the molecular segments are arranged in a very orderly manner, and the toughness of the material is significantly improved. If this kind of polymethyl methacrylate is driven in by a nail, it does not crack even if the nail penetrates. This kind of polymethyl methacrylate would also not break into pieces if it was penetrated by a bullet. Therefore, stretch-treated polymethyl methacrylate can be used as bulletproof glass and also as a canopy on military aircraft. Acrylic packaging box in the market is not easy to be damaged even if they are bumped.
2. Acrylic is easy to process
Plexiglass can not only be cut with lathes but also drilled with a drilling machine. Also, it can be bonded into various shapes of appliances with materials like acetone chloroform. In addition, it can be processed into a large aircraft canopy by blow molding, injection, extrusion and other plastic molding methods. Designers can design various creative products even as small as dentures and dental trays, and these products can basically be processed by acrylic. This gives a lot of impetus and space for the acrylic packaging box which needs creative appearance design.
3. Acrylic is highly transparent
Currently, polymethyl methacrylate is the best polymer transparent material with light transmittance up to 92%. The glass with a high light transmittance and the tube of the solar lamp called the artificial sun is made of quartz, this is because quartz can completely transmit ultraviolet rays. Ordinary glass can only transmit 0.6% of ultraviolet rays while polymethyl methacrylate can transmit 73%. Acrylic advertising packaging boxes that are used in shopping malls can be rendered with colorful visual effects through colored lights.
4. Acrylic is lightweight
The density of polymethyl methacrylate is 1.18kg/dm3. The same size material weighs only half that of ordinary glass and 43% as aluminum (belongs to light metal). Therefore, an acrylic packaging box is easy to move even if it is used outdoors.