1. Resin buttons Raw materials: The raw materials for producing buttons are mainly unsaturated polyester resins, curing agents, and auxiliary materials.
(1) The resin used in the production of unsaturated polyester resin requires a viscosity of 10-20 Pa.s, low heat release during curing, short gelation time, easy coloration of the resin, and relatively slow hardness growth during the curing stage.
(2) The curing agent initiator is methyl ethyl ketone peroxide, and the accelerator is cobalt naphthalate.
(3) Auxiliary materials include color pastes, pearl powders, thixotropic agents, and the like. The pearl powder is hexagonal flake crystals of basic lead carbonate, which can be arranged in parallel during the molding process to show pearl luster. The thixotropic agent is active silica and is mainly used to prevent no color from permeating each other.
2. Production process: Polyester buttons are produced by centrifugal cast bar casting method. Plates or bars are made first. Then, the blanks are made by cutting and cutting the bars. Then, the heat treatment, scraping, scraping, and milling are performed. , Drilling.... Several major varieties of resin buttons.
(1) The magnetic buttons have a single color and no pattern, but they can be made into various shapes.
(2) The flat pearl button product features that the pearlescent brightness is the same in the entire button surface, like a mirror, bright color, appearance and pearlescent organic glass buttons are difficult to distinguish. Most of the pearlescent buttons are mostly used for shirt buckles.
(3) The pearlescent arrangement on the surface of the Moonlight Button has a corrugated appearance, with a high pearlescent brightness and a bright spotlight that shines like a cat's eye.
(4) Rainbow Button This type of pearl button is characterized by the irregular arrangement of pearls on the surface and shows colorful effects. This kind of pearlescent button and pearl shell effect of natural shells are closer, so called imitation shell buttons.
(5) Stick flowers and mixed flower buttons have fine and smooth lines on the surface, natural colors, natural bamboo and wood textures, so they are also called imitation wood buttons and imitation bamboo buttons. This kind of button is mainly used in some casual clothes.
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