METHOD OF MANUFACTURING BELLOWS

• Main Authors: YANG YUNFENG, NEMOTO KOUJI
• Format: Patent
• Language: English; Korean
• Published: 19.10.2016
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention provides a method for manufacturing a bellows-type seal, which can produce a bellows-type seal having a high chemical resistance. According to the method of the present invention, a layered sheet body is formed by superimposing a molded shape having folding lines for forming a bellows shape with a planar base material. Subsequently, the layered sheet body is folded in the bellows shape, compressed and heated. Following the heating, the molded shape is removed from the layered sheet body. The base material may be formed, for example, by polyethylene terephthalate (PET), polyvinyl chloride (PVC), polypropylene (PP), polyurethane (PU) and the like, and the bellows shape is formed without using rubber-based materials. (과제) 약제에 대한 내성이 강한 벨로스상의 커버를 제조할 수 있는 벨로스의 제조 방법을 제공한다. (해결 수단) 벨로스상을 형성하기 위한 접음선을 갖는 성형형과, 판상의 모재를 중첩하여 적층 시트체를 형성하고, 적층 시트체를 벨로스상으로 절곡하고 압축하여 가열한다. 가열 후, 적층 시트체로부터 성형형을 제거한다. 모재는, 예를 들어, 폴리에틸렌테레프탈레이트 (PET), 폴리염화비닐 (PVC), 폴리프로필렌 (PP), 폴리우레탄 (PU) 등으로 형성되고, 고무계의 재료를 사용하지 않고 벨로스상이 형성된다.