Waterproof PVC Magnetic Snap Button Round Invisible Hidden Sew-in Closure Fastener for Down Jacket Winter Coat Bag Handbag

   Ordinary uncoated flexible rubber magnets are prone to magnetic powder falling off, water erosion and surface abrasion after long-term indoor and outdoor use, greatly shortening service life. PVC and TPU coated magnets solve these pain points by adding integral polymer protective shell outside magnetic substrate. Users can select coating material according to usage environment to obtain targeted protection, which greatly expands application range of flexible magnetic products.     PVC coating is cost-effective waterproof solution with good moisture resistance and chemical corrosion resistance, suitable for indoor scenarios, ordinary outdoor sheltered positions, poster mounting, cabinet magnetic strips and refrigerator accessories. TPU coating has superior elasticity, wear resistance, cold resistance and tear resistance compared with PVC, which can adapt to frequent bending, friction, low temperature environment and exposed outdoor weather, ideal for automobile magnetic parts, outdoor advertising magnetic strips, mechanical movable sealing components.     The inner magnetic layer retains good flexibility, users can bend, cut and punch the magnet to match installation contours of curved surfaces, irregular frames. Compact bonding between coating and magnetic layer avoids peeling in long-term use. The smooth outer surface will not scratch painted metal, glass, wall surfaces during adsorption movement, no extra protective cushion needed for mounting. UV stabilized coating options are available to slow aging caused by long time sunlight exposure.     We supply multiple thicknesses, magnetic strength for base rubber magnets, customers can freely choose PVC or TPU cladding. Custom die cutting into strips, sheets, special contours is supported, finished products can be equipped with adhesive backing for easier pasting installation. Strict bonding testing is conducted for each batch to guarantee coating will not separate from magnet core under bending, temperature change.     Typical applications include magnetic poster mounting kits, car decorative magnetic strips, door and window sealing magnets, refrigerator craft accessories, logistics reusable magnetic labels, industrial temporary positioning components. Small sample trial and bulk wholesale orders are both accepted.