FIELD: physics.
SUBSTANCE: plastic keychain is made with full-colour printing and is equipped with a built-in RFID-tag, made in a rectangular shape and has a through circular hole for the ring. The corners of the keychain are rounded, and the three corners of the keychain have one radius, and the fourth one differs from them. The keychain consists of successively combined layers of plastic laminate, a decorative-information layer of the front side, a central preliminate with, at least, one RFID-tag installed, a decorative-information layer of the back side, a plastic laminate forming the base together, and on both sides there is a layer of glue and a composite lens. The method of manufacturing a plastic keychain is that first a central preliminate is formed, then a multilayered structure is formed, the basis for which on both sides of the central preliminate is laid along the information-decorative sheet and the protective laminating layer. Then, all the sheets are joined together thermocompressively, a plurality of, for example, 24, 48, 72 or more, cutout blanks with through circular holes each, are cut from the resulting multi-layer structure, but the keychains are kept on the base. Then all the blanks are covered on one side with a liquid material based on polyurethane, then on the other side, then the multilayer sheet with the blanks is dried, and the finished keychains are removed from the base and packaged.
EFFECT: creating a device that performs the function of a keychain and a contactless smart-card, increasing its resistance to physical stresses arising in everyday use, increasing resistance to changes in the temperature of the environment of use, to ultraviolet radiation due to the materials used in the device, and improving ergonomics and ease of use of the device, the method allows to automate the process of manufacturing keychains.
17 cl, 1 dwg
