PU ndiyo chidimbu chePolyurethane, uye zita rayo rechiChinese rinonzi Polyurethane.
Kupfeka paste kunonyanya kuumbwa nebacking (sheet tepi), absorption pad uye pepa rekuzviparadzanisa nevamwe, rakakamurwa kuita gumi marudzi zvichienderana nehukuru hwakasiyana. Chigadzirwa chacho chinofanira kunge chisina mbereko.
Band-aid i tepi refu yakabatanidzwa ne medicated gauze pakati, iyo inoshandiswa paronda kuti idzivirire ronda, kumisa kubuda ropa kwenguva pfupi, kudzivisa kuberekwazve kwebhakitiriya uye kudzivirira ronda kuti risakuvadzwa zvakare.
Chigadzirwa chacho chinogadzirwa nemucheka wekurapa usiri wakarukwa, 70% doro rekurapa.