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    • 95. 发明授权
    • Release liners for molded product production
    • 用于成型产品生产的剥离衬垫
    • US5846662A
    • 1998-12-08
    • US856519
    • 1997-05-15
    • John S. Baumgardner, deceasedMerle W. Barclay
    • John S. Baumgardner, deceasedMerle W. Barclay
    • B29C33/68B32B5/26B32B23/10H05K3/02B32B21/06
    • B29C33/68B32B23/10B32B5/26H05K3/022Y10T428/24992Y10T428/31978Y10T428/31982
    • A mold release liner for a heated pressure mold for making products such as printed circuit boards is made utilizing two or more wet-laid fiber layers of cellulose or cellulose derivative fibers (such as wood, cotton, cellulose acetate, or rayon fibers, or mixtures of these). The first layer has a sufficiently low density so that it acts as a cushion and absorbs deformation when used as a release liner in the mold (typically it has a thickness of between 8-250 mils, most desirably 40-90 mils, and a basis weight of about 25-350 pounds per ream, most desirably 130-160 pounds per ream). A second layer is of much higher density than the first layer and readily releases from the molds, for example comprising condenser tissue or a similar product, having a thickness of between 0.5-10 mils and a basis weight of 4-50 pounds per ream of 500 sheets. The first and second layers are in face-to-face engagement with each other, and may be adhesively laminated together with sheet, spray, liquid, or powder adhesive. A third layer, substantially like the second layer but on the opposite side of the first face, may also be provided. The second and third layers may have a chromium complex release agent applied to them.
    • 用于制造诸如印刷电路板的产品的加热压力模具的脱模衬垫是利用纤维素或纤维素衍生纤维(例如木材,棉花,醋酸纤维素或人造丝纤维或混合物)的两个或多个湿法成网纤维层制成的 这些)。 第一层具有足够低的密度,使得其用作衬垫并且当用作模具中的剥离衬垫时吸收变形(通常其厚度为8至50密耳,最优选为40-90密耳,基底为 重量约25-350磅每份,最理想的是130-160磅每份)。 第二层具有比第一层高得多的密度,并且容易地从模具中排出,例如包括冷凝器组织或类似产品,其厚度在0.5-10密耳和每重量4-50磅的基重之间 500张。 第一层和第二层彼此面对面地接合,并且可以与片材,喷雾,液体或粉末粘合剂粘合地层压在一起。 也可以提供基本上类似于第二层但在第一面的相对侧上的第三层。 第二层和第三层可以具有施加到它们的铬复合物脱模剂。
    • 96. 发明授权
    • Release liners for production of molded products
    • 用于生产模制产品的脱模衬垫
    • US5709931A
    • 1998-01-20
    • US512780
    • 1995-08-09
    • John S. BaumgardnerMerle W. Barclay
    • John S. BaumgardnerMerle W. Barclay
    • B29C33/68B32B5/26B32B23/10H05K3/02B32B7/02B32B21/06B32B23/04
    • B29C33/68B32B23/10B32B5/26H05K3/022Y10T428/24992Y10T428/31978Y10T428/31982Y10T442/651
    • A mold release liner for a heated pressure mold for making products such as printed circuit boards is preferably made without polymer films or chemical release agents utilizing two or more wet-laid fiber layers of cellulose or cellulose derivative fibers (such as wood, cotton, cellulose acetate, or rayon fibers, or mixtures of these). The first layer has a sufficiently low density so that it acts as a cushion and absorbs deformation when used as a release liner in the mold (typically it has a thickness of between 8-250 mils, most desirably 40-90 mils, and a basis weight of about 25-350 pounds per ream, most desirably 130-160 pounds per ream). A second layer is of much higher density than the first layer and readily releases from the molds, for example comprising condenser tissue or a similar product, having a thickness of between 0.5-10 mils and a basis weight of 4-50 pounds per ream of 500 sheets. The first and second layers are in face-to-face engagement with each other, and may be adhesively laminated together with sheet, spray, liquid, or powder adhesive. A third layer, substantially like the second layer but on the opposite side of the first face, may also be provided.
    • 用于制造诸如印刷电路板的产品的加热压模的脱模衬垫优选地不用聚合物膜或使用两种或更多种纤维素或纤维素衍生物纤维(例如木材,棉花,纤维素)的湿法成网纤维层的化学脱模剂 乙酸酯或人造丝纤维,或它们的混合物)。 第一层具有足够低的密度,使得其用作衬垫并且当用作模具中的剥离衬垫时吸收变形(通常其厚度为8至50密耳,最优选为40-90密耳,基底为 重量约25-350磅每份,最理想的是130-160磅每份)。 第二层具有比第一层高得多的密度,并且容易地从模具中排出,例如包括冷凝器组织或类似产品,其厚度在0.5-10密耳和每重量4-50磅的基重之间 500张。 第一层和第二层彼此面对面地接合,并且可以与片材,喷雾,液体或粉末粘合剂粘合地层压在一起。 也可以提供基本上类似于第二层但在第一面的相对侧上的第三层。