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    • 3. 发明申请
    • PROCESS OF FORMING A CONTOURED INSULATING SHEET
    • 形成绝缘绝缘片的工艺
    • WO1988001565A1
    • 1988-03-10
    • PCT/US1987002173
    • 1987-09-03
    • ASTECHNOLOGIES, INC.
    • ASTECHNOLOGIES, INC.ELLIOTT, George, M.
    • B31F01/00
    • B29C67/248B29C35/04B29C43/203B29C44/10B29C44/5618B29C2043/186B29K2061/04B29K2105/04B29K2105/045B29K2105/256B29K2309/08B29K2709/08B29L2031/3005B60R13/02B60R13/0225
    • A rigid, contoured insulating sheet is formed from a flexible, substantially uniform thickness mat (43) of loose fibers or open-cell foam, impregnated with an uncured, heat-activable adhesive, e.g., a phenol-formaldehyde resin, by: a) compressing the mat between a pair of complementary, contoured, preheated e.g., 375 DEG F.) dies (19 and 22) that have perforations (4, 18 and 33) across substantially their entire contact surfaces (30 and 50); b) simultaneously ejecting superheated vapor, preferably steam (lines 9, 14 and 40), through the perforations in both dies, the vapor being at a pressure and temperature e.g., 80 psig and 600 DEG F.) sufficient to heat the adhesive in the mat to its activation temperature e.g., 230-350 DEG F.); and c) applying vacuum (line 10) to the mat, so as to pull ambient air therethrough, until the adhesive is substantially set. The process is especially useful for forming contoured, fiberglass, insulation panels for automobiles, e.g., headliner shells.
    • 刚性的轮廓绝缘片由柔软的,基本上均匀的松散纤维或开孔泡沫的厚度垫(43)形成,其通过以下方式浸渍有未固化的可热活化的粘合剂,例如酚醛树脂:a) 在基本上其整个接触表面(30和50)上穿过穿孔(4,18和33)的一对互补的,成型的,预热的例如375°F的模具(19和22)之间压缩垫子; b)同时喷射过热蒸汽,优选蒸汽(管线9,14和40)通过两个模具中的穿孔,蒸汽处于压力和温度例如80psig和600°F),足以加热粘合剂 垫到其活化温度,例如230-350°F); 和c)将真空(管线10)施加到垫子上,以便将环境空气拉过,直到粘合剂基本上被固定。 该方法对于形成用于汽车的轮廓,玻璃纤维,绝缘板,例如顶篷壳特别有用。