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    • 8. 发明申请
    • PROCESS FOR FORMING A SHEET OF THERMOPLASTIC MATERIAL
    • 形成热塑性材料的方法
    • WO2012126982A1
    • 2012-09-27
    • PCT/EP2012/055075
    • 2012-03-22
    • UNILEVER PLCUNILEVER N.V.HINDUSTAN UNILEVER LIMITEDAXE, Suzanne, EmmaWOODWARD, Adrian, Michael
    • AXE, Suzanne, EmmaWOODWARD, Adrian, Michael
    • B29C51/08B29C51/42B29C35/04
    • B29C51/00B29C35/045B29C51/04B29C51/08B29C51/426B29C2791/001B29K2067/00B29K2105/0809B29K2995/0065B29L2031/7122
    • Provided is a process for forming a sheet of thermoplastic material into a three- dimensional shape, the process comprising the steps of (i) forming the sheet at a temperature below its glass transition temperature to produce a first formed shape in the sheet, followed by (ii) raising the temperature of the first formed shape (20) to above its glass transition temperature whilst a male former (12), having at least a portion of its profile being substantially the same as that of the first formed shape (20), is positioned to substantially align at least a portion of its profile with that of the first formed shape (20), thereby restricting the first formed shape from shrinking back towards its original sheet form, followed by (iii) further forming the first formed shape (20) at a temperature below that of the glass transition temperature, to form a second formed shape (24), followed by (iv) raising the temperature of the second formed shape (24) to above its glass transition temperature whilst a male former (16), at least a portion of its profile being substantially the same as that of the second formed shape (24), is positioned to substantially align at least a portion of its profile with that of the second formed shape (24), thereby restricting the second formed shape (24) from shrinking back towards its original sheet form.
    • 提供了一种将热塑性材料片形成为三维形状的方法,该方法包括以下步骤:(i)在低于其玻璃化转变温度的温度下形成片材,以在片材中产生第一成形形状,随后是 (ii)将第一成形形状(20)的温度提高到高于其玻璃化转变温度,而具有至少一部分其轮廓的第一成形形状(20)的凸形成形器(12)基本上与第一成形形状(20)相同, 定位成基本上对准其轮廓的至少一部分与第一成形形状(20)的至少一部分,从而限制第一成形形状朝向其原始片状收缩,随后(iii)进一步形成第一成形形状 (20)在低于玻璃化转变温度的温度下形成第二成形形状(24),随后(iv)将第二成形形状(24)的温度升高到其玻璃化转变温度w 虽然雄性成形器(16),其轮廓的至少一部分与第二成形形状(24)基本上相同,定位成基本对准其轮廓的至少一部分与第二成形形状( 24),从而限制第二成形形状(24)从其原始片材的形状收缩。