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    • 53. 发明授权
    • Test apparatus for film-forming materials
    • 用于成膜材料的试验装置
    • US3747397A
    • 1973-07-24
    • US3747397D
    • 1971-10-26
    • LILLY CO ELI
    • SHARABASH M
    • G01N11/00G01N19/04
    • G01N11/00
    • A gelatin film is spread on a flat steel plate from a spreader bucket and blade moved over the plate at uniform speed. To provide controlled gelling conditions, the plate temperature is held constant by water flow across its bottom and conditioned air is circulated through a housing over the plate. A plurality of test probes mounted above the plate are depressed into contact with and withdrawn from the gelatin film, in timed sequence. The probes are wetted by un-gelled film and draw strands therefrom which remain connected to the probes, whereas the probes do not draw strands from gelled film but form dimples therein. The strands and dimples may be retained as a record, and gelation time is accurately determined by observing either or both of when the successively-depressed probes cease to draw strands or start to form dimples. Strand thickness and dimple size varies at different stages to reveal gelation characteristics.
    • 将明胶膜从撒布机铲斗上分散在平板钢板上,并以均匀的速度在板上移动。 为了提供可控制的胶凝条件,板材温度通过其底部的水流保持恒定,调节后的空气通过板上的壳体循环。 安装在板上方的多个测试探针按照时序顺序被压下与明胶膜接触并从明胶膜中取出。 探针被未凝胶膜润湿,并从其上拉出保持连接到探针的线,而探针不会从凝胶膜中拉出线,而在其中形成凹坑。 股线和凹坑可以作为记录保留,并且通过观察当连续下降的探针停止汲取股线或开始形成凹坑时的任何一个或两者,可准确地确定凝胶化时间。 链条厚度和凹坑尺寸在不同阶段变化以显示凝胶化特征。