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公开(公告)号：US3668032A
公开(公告)日：1972-06-06
申请号：US3668032D
申请日：1970-10-26
申请人： MCCALL CORP
CPC分类号： B41C3/08 , B41C3/06 , Y10T156/1033 , Y10T156/1039 , Y10T156/108
摘要： A first portion of a sheet of thermoplastic material is placed on the face of an engraved master plate, and the plate and sheet are positioned between the platens of a hydraulic press. The first portion of the sheet and the master plate are pre-heated and are then pressed together to mold an impression of the face within the first portion of the sheet. The master plate and sheet portion are cooled while the pressure is maintained, after which the pressure is released and the sheet is shifted laterally a precise predetermined distance relative to the master plate while maintaining the angular orientation of the sheet, to position a second portion of the sheet over the face of the master plate. The steps of pre-heating, pressing, cooling and releasing are then repeated to produce a flexible mat having a pair of identical impressions in precise spaced relation and corresponding angular orientation. One or more metal layers are electrolytically deposited on the mat, and the resulting thin sheet of deposited metal is separated from the mat and laminated to a pre-curved reinforcing plate which is trimmed along its edge.
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公开(公告)号：US3568595A
公开(公告)日：1971-03-09
申请号：US3568595D
申请日：1967-08-28
申请人： MCCALL CORP
CPC分类号： B41C3/08 , B41C3/06 , Y10T156/1033 , Y10T156/1039 , Y10T156/108
摘要： A hydraulic press supporting a lower press member including a center and end sections each having an internal passageway and with an engraved master plate mounted on the center section, an automatically controlled system for circulating cooling fluid through the passageways in the end sections and alternately circulating cooling and heating fluid through the passageway in the center section for preheating and cooling the plates, a thermoplastic sheet of material pressed against the preheated plate by an upper press member having a resilient blanket and held until the plate and sheet are cooled, and a frame slidably mounted on the lower press member for shifting the sheet a predetermined distance to form a flexible mat having a pair of identical impressions in precise registration for use in producing a two-on plate for a letterpress.
摘要翻译： 将热塑性材料片的第一部分放置在雕刻的主板的表面上，并将板和片定位在液压机的压板之间。 片材和母板的第一部分被预热，然后被压在一起以在片材的第一部分内模制面部的印模。 在保持压力的同时冷却主板和片材部分，然后释放压力，并且在保持片材的角度取向的同时，片材相对于母板横向偏移精确的预定距离，以将片材的第二部分 主板上的表面。 然后重复预热，压制，冷却和释放的步骤，以产生具有精确间隔关系和对应角度取向的一对相同印模的柔性垫。 将一个或多个金属层电解沉积在垫上，并将所得的沉积金属薄片与垫分离并层压到沿其边缘修剪的预弯曲加强板。
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