MANUFACTURING METHOD FOR SEAT PAD WITH DUCT, AND FOAM MOLD USED FOR THE SAME

• Main Authors: IMAI KEITA, KIRYU AKIO, SUGIYAMA HIROTAKA, MORI KIMINARI
• Format: Patent
• Language: English; Japanese
• Published: 25.12.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a manufacturing method for a seat pad with a duct which prevents a foam material from entering a duct through an air jetting opening.SOLUTION: In a method of manufacturing a seat pad with a duct, an air distribution duct 6 in which an air jetting opening is provided in a duct route is set to a foam mold 7. Then, by injection of foam material m and closing of a mold, a seat pad in which the duct 6 is embedded is foam-molded. By the foam molding, a recess formed on a seat pad surface on a passenger abutment side is made to be an air blowing opening to match with the air jetting opening. At a raised portion 72 for forming a recess, the foam mold 7 in which a cave is dug from its upper surface portion is used to form an annular recess that encloses the air jetting opening, at a duct surface portion of a duct part 66 around the air jetting opening. By setting the duct 6 to the foam mold 7, an upper surface portion of the raised part is made to tightly contact to a duct surface portion so as to close the annular recess. Then, by injection of the foam material m and closing the mold, the duct 6 is inserted to integrally foam-mold with the seat pad. 【課題】エア噴出口からダクト内へ発泡原料の侵入を阻止するダクト入りシートパッドの製造方法を提供する。【解決手段】ダクト経路にエア噴出口が設けられた配風用ダクト6を、発泡型7にセットし、次いで、発泡原料mの注入及び型閉じを経て、ダクト6が埋設されるシートパッドを発泡成形し、その発泡成形で、乗員当接側のシートパッド表面に形成する窪みをエア噴出口に合わせて空気吹き出し口にするダクト入りシートパッドの製造方法であって、窪みを形成する隆起部72に、その上面部分から洞穴が掘り下げられた発泡型7を用いて、エア噴出口周りのダクト部66のダクト表面部分に、エア噴出口を囲む環状凹所が形成されて、発泡型7へのダクト6のセットで、隆起部上面部分を、環状凹所を塞ぐようにしてダクト表面部分に密着させ、次いで、発泡原料m)注入及び型閉じを経て、ダクト6をインサートしてシートパッドを一体発泡成形する。【選択図】図４