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1.发明授权
公开(公告)号：US5055320A
公开(公告)日：1991-10-08
申请号：US450508
申请日：1989-12-14
CPC分类号： G03C1/93 , B05C5/0262 , G03C1/74 , G03C1/79 , G03C2001/7459 , Y10S430/138 , Y10T428/277 , Y10T428/31899
摘要： A support sheet for photographic printing paper having an undercoat layer on which a photographic emulsion layer is to be formed, and which is free from foaming, contamination by foreign substances, and putrefaction and does not effect the photographic emulsion, by the steps of coating front and back surfaces of a substrate sheet with polyolefin resins; surface-activating the front coating layer; and extrusion coating the activated surface of the front coating layer with a coating liquid comprising gelatin, through a slit-shaped orifice, to form the undercoat layer.
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公开(公告)号：US5178936A
公开(公告)日：1993-01-12
申请号：US766907
申请日：1991-09-26
IPC分类号： G03C1/79
CPC分类号： G03C1/79 , Y10T428/24992 , Y10T428/264 , Y10T428/277 , Y10T428/31855 , Y10T428/31895
摘要： A support sheet for a photographic printing sheet, having a high resistance to scratching, curling and a enhanced ability to be sharply cut, and provided with front and back surface coating layers formed respectively on the front and back surfaces of a substrate sheet and comprising, as a main component, a polyolefin resin; the polyolefin resin in the front surface coating layer comprising 30 to 70% by weight of a linear low density ethylene-propylene or butene-1 copolymer (L-LDPE) having a density of 0.915-0.935 g/cm.sup.3 and a melt index of 15-30 g/10 min and 30 to 70% by weight of a high pressure-processed low density polyethylene (HP-LDPE) having a density of 0.915-0.928 g/cm.sup.3 and a melt index of 1 to 5 g/10 min.
摘要翻译： 一种用于照相打印片材的支撑片材，具有高耐划伤，卷曲和增强的切割能力，并且分别形成在基片的前表面和后表面上形成的正面和背面涂层， 作为主要成分的聚烯烃树脂; 表面涂层中的聚烯烃树脂包含密度为0.915-0.935g / cm 3，熔体指数为15的线性低密度乙烯 - 丙烯或丁烯-1共聚物（L-LDPE）30〜70重量％ -30〜70重量％的密度为0.915〜0.928g / cm 3，熔融指数为1〜5g / 10分钟的高压加工低密度聚乙烯（HP-LDPE）为30〜70重量％。
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公开(公告)号：US4988559A
公开(公告)日：1991-01-29
申请号：US433100
申请日：1989-11-08
CPC分类号： G03C1/805 , G03C1/79 , Y10T428/27 , Y10T428/277 , Y10T428/31884 , Y10T428/31895 , Y10T428/31902
摘要： A support sheet for photographic printing paper comprising a substrate sheet, polyolefin resin coating layers formed on the two surfaces of the substrate sheet, and an adhesive layer formed on a surface of the substrate sheet and one of the coating layers and comprising hydroxyethyl cellulose or a mixture of hydroxyethyl cellulose with one or more organic compounds having carboxyl radicals, the adhesive layer enabling the peel strength of the coating layer from the substrate sheet surface to be controlled to an appropriate peelable level of 10 to 200 g/25.4 mm determined in accordance with ASTM D903-49.
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公开(公告)号：US4968554A
公开(公告)日：1990-11-06
申请号：US259682
申请日：1988-10-19
CPC分类号： D21F11/00 , G03C1/79 , G03C1/81 , Y10T428/24975 , Y10T428/3188 , Y10T428/31895 , Y10T428/31902
摘要： A support sheet for photographic paper having an enhanced resistance to curling, especially twist-curling, comprises a substrate paper sheet composed of a half stratum portion thereof at the face side of a surface on which a photographic emulsion layer will be formed and the other half stratum portion thereof at the back side of the opposite surface, and two polyolefin resin coating layers on the two surfaces of the substrate paper sheet, the substrate paper sheet having a resiliency satisfying the relationships (I) and (II):1.5.ltoreq.E.sub.fl /E.sub.bt .ltoreq.2.25 (I)=and ##EQU1## wherein E.sub.fl =a modulus of elasticity of the face side half stratum portion in the longitudinal direction of the substrate, E.sub.bt =a modulus of elasticity of the back side half stratum portion in the transverse direction of the substrate, E.sub.ft =a modulus of elasticity of the face side half stratum portion in the transverse direction of the substrate, and E.sub.bl =a modulus of elasticity of the back side half stratum portion in the longitudinal direction of the substrate.
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公开(公告)号：US5177053A
公开(公告)日：1993-01-05
申请号：US645315
申请日：1991-01-24
CPC分类号： B41M5/42 , B41M5/426 , B41M5/44 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/277 , Y10T428/31855 , Y10T428/31902 , Y10T428/31931 , Y10T428/31935
摘要： A thermal transfer image-receiving sheet for a thermal transfer type printer comprises a sheet substrate, a front coating layer formed on the front surface of the sheet substrate and comprising a polyolefin resin, a polyolefin resin back coating layer formed on the back surface of the sheet substrate, and optionally, a surface coating layer formed on the front coating layer and comprising a resinous binder and a pigment.
摘要翻译： 一种用于热转印型打印机的热转印图像接收片材包括片状基材，形成在片状基材的前表面上的前涂层，其包含聚烯烃树脂，形成在该基材的背面上的聚烯烃树脂背涂层 片状基材和任选的形成在前涂层上并包含树脂粘合剂和颜料的表面涂层。
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6.发明授权
公开(公告)号：US5514429A
公开(公告)日：1996-05-07
申请号：US151837
申请日：1993-11-15
CPC分类号： D21H21/54 , B65H75/10 , B65H75/18 , Y10S428/906 , Y10T428/1303 , Y10T428/1393 , Y10T428/249977 , Y10T428/253 , Y10T428/254 , Y10T428/277
摘要： A cylindrical composite paperboard cushion core for winding a sheet material therearound without forming undesirable stepwise marks thereon, comprises a cylindrical paperboard substrate and a cushion layer formed on the cylindrical paperboard substrate from an expanded paper sheet having a density of 0.1 to 0.4 g/cm.sup.3, the expanded paper sheet being formed by forming an unexpended paper sheet containing therein a plurality of expansible microcapsules each having a volatile liquid core contained in a thermoplastic resin shell and capable of starting an expansion at a temperature of 80.degree. C. to 200.degree. C., and heating the unexpanded paper sheet at the expansion-starting temperature of the microcapsules or higher, to cause the paper sheet to be expanded.
摘要翻译： 一种圆柱形复合纸板缓冲芯，用于在其周围缠绕片材而不形成不期望的分步标记，包括圆柱形纸板基底和由密度为0.1至0.4g / cm 3的膨胀纸形成在圆柱形纸板基底上的缓冲层， 膨胀纸是通过在其中含有多个可膨胀的微胶囊形成的未破碎的纸片形成的，所述多个可膨胀的微胶囊具有包含在热塑性树脂壳中的挥发性液体核，并能够在80℃至200℃的温度下开始膨胀。 ，在微胶囊的膨胀开始温度以上加热未膨胀纸，使纸张膨胀。
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公开(公告)号：US4895688A
公开(公告)日：1990-01-23
申请号：US261310
申请日：1988-10-24
申请人： Tsunehisa Shigetani , Masahiro Kamiya , Tatsuo Miyakoda , Katsuhiko Sakata , Toshio Inada , Tatsumi Okada
发明人： Tsunehisa Shigetani , Masahiro Kamiya , Tatsuo Miyakoda , Katsuhiko Sakata , Toshio Inada , Tatsumi Okada
CPC分类号： B29C47/402 , B29C47/38 , B29C47/6093 , G03C1/79 , B29C47/0009
摘要： A support for photographic paper is produced by a method including the steps of coating one or two surfaces of a substrate sheet with a resinous melt includes a water-proof thermoplastic polymer and a pigment, by a melt-extrude-coating method, and solidifying the coating layer of the resinous melt on the substrate sheet, and wherein at least one melt-kneading procedure is applied to the resinous melt in a melt extruder having a pair of biaxial screws engaged with each other and satisfying the relationship (i)L.gtoreq.20D (I)wherein L is a length of the screws and D is a diameter of the screws, and provided with at least one pair of kneading disks located in at least a portion of the screws.
摘要翻译： 通过包括以下步骤的方法制造相纸的载体：通过熔融挤出 - 涂布法将含有树脂熔融物的基片的一个或两个表面涂覆在防水热塑性聚合物和颜料上的步骤， 在基材片上的树脂熔融物的涂层，并且其中在具有彼此啮合的一对双轴螺杆的熔融挤出机中，将至少一种熔融捏合程序施加到树脂熔体上，并且满足关系式（i）L> / = 20D（I）其中L是螺钉的长度，D是螺钉的直径，并且设置有至少一对位于至少一部分螺钉中的捏合盘。
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