METHOD OF MANUFACTURING FOAM MOLDING BODY AND FOAM MOLDING BODY

• Main Authors: KATO TAIGA, YOKOI SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 18.01.2023
• 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

To easily expand a foamed resin sheet to a desired thickness in an expansion process.SOLUTION: A method of manufacturing a foam molding body includes: a process of extruding a foam resin in a molten state through a slit and stretching the extruded foam resin between a pair of rollers, thereby causing a foam resin sheet to hang between first and second molds; and an expansion process to expand the foamed resin sheet to a thickness of a gap by vacuuming the foamed resin sheet under reduced pressure by both the first and second molds while the first and second molds are brought closer to each other so that the gap larger than the thickness of the foamed resin sheet is provided between the first and second molds.SELECTED DRAWING: Figure 1 【課題】発泡樹脂シートを膨張工程で所望肉厚に膨らませやすくする。【解決手段】発泡成形体の製造方法であって、溶融状態の発泡樹脂をスリットから押し出し、前記押し出された前記発泡樹脂を一対のローラーで挟んで延伸することによって、発泡樹脂シートを第１及び第２金型間に垂下させる工程と、前記発泡樹脂シートの厚さよりも大きい隙間が第１及び第２金型の間に設けられるように第１及び第２金型を近づけた状態で第１及び第２金型の両方によって前記発泡樹脂シートを減圧吸引することによって、前記発泡樹脂シートを前記隙間の厚さにまで膨張させる膨張工程と、を備える、方法が提供される。【選択図】図１