公开(公告)号：US07279122B2

公开(公告)日：2007-10-09

申请号：US10550174

申请日：2004-03-31

申请人： Frank J. Baresich ,  Robert F. Thompson

发明人： Frank J. Baresich ,  Robert F. Thompson

IPC分类号： B29C45/73

CPC分类号： B29C45/7613 ,  B29C45/73 ,  B29C45/78 ,  B29C2045/0094 ,  B29C2945/76043 ,  B29C2945/76066 ,  B29C2945/76531 ,  B29C2945/76735 ,  B29C2945/76739 ,  B29C2945/76765 ,  B29C2945/76782 ,  B29C2945/76859 ,  B29C2945/76892 ,  B29C2945/76943 ,  B29L2017/005

摘要： An injection mold and process are arranged to produce very thin articles, such as data discs. Molten plastic is injected into mold parts forming a thin cavity (17), in a cyclic molding process wherein the mold parts are subjected to a substantially constant temperature stimulus and rise and fall in temperature during injection and cooling of the molten plastic. Temperature boosting thermal insulation layers (11, 21) are placed along at least certain parts of the molding cavity surface. This elevates the temperature of the molted melt material for a time during injection. According to a calculated relationship, this thermal insulation is sized to permit the thin mold cavity to fill before heat transfer to the mold parts solidifies the molding material and blocks further flow. The temperature boosters can be contoured in thickness.

摘要翻译： 注射模具和工艺被布置成产生非常薄的物品，例如数据盘。 将熔融塑料注射到形成薄腔（17）的模具部件中，在循环模制过程中，其中模具部件经受基本恒定的温度刺激并且在熔融塑料的注射和冷却期间升高和降低温度。 沿着模腔表面的至少某些部分放置升温隔热层（11,21）。 这在注射期间提高了熔融物质的温度一段时间。 根据计算的关系，该热绝缘的尺寸设定为允许在向模具部件传热之前填充薄的模具腔，从而固化模制材料并阻止进一步的流动。 温度升高器的厚度可以是轮廓。

公开(公告)号：US07175416B2

公开(公告)日：2007-02-13

申请号：US10814000

申请日：2004-03-31

申请人： Frank J. Baresich ,  Robert F. Thompson

发明人： Frank J. Baresich ,  Robert F. Thompson

IPC分类号： B29C45/20

CPC分类号： B29C45/20 ,  B29C2045/207

摘要： A nozzle for injection molding is made of at thermally conductive metal material but is thermally conductively blocked or interrupted. An abrupt reduction in wall thickness and/or a gap in the continuity of thermally conductive material occur along the nozzle material passageway. This provides a localized restriction to thermal conduction, causing a reduction in heat flow from the mold to the material supply while cooling the melt material near the end of the nozzle. This material, which is relatively cooled to near the mold temperature, becomes the last injected material when filling of the mold is completed, occupying the area of the sprue. As a result, the sprue is relatively cool, thus reducing stringing and shortening mold cycle time.

摘要翻译： 用于注射成型的喷嘴由导热金属材料制成，但是导热阻塞或中断。 沿着喷嘴材料通道发生壁厚和/或导热材料的连续性的间隙的突然减小。 这提供了对热传导的局部限制，从而导致从模具到材料供应的热流的减少，同时冷却在喷嘴端部附近的熔体材料。 相对冷却到接近模具温度的这种材料在填充模具完成时成为最后注入的材料，占据浇口的区域。 结果，浇道相对较冷，从而减少了模具循环时间的缩短和缩短。

公开(公告)号：US06019930A

公开(公告)日：2000-02-01

申请号：US857762

申请日：1997-05-15

申请人： Frank J. Baresich

发明人： Frank J. Baresich

IPC分类号： B29C45/26 ,  B29C45/37 ,  B29C45/73 ,  B24C45/73

CPC分类号： B29C45/73 ,  B29C45/2642 ,  B29C45/37 ,  B29L2011/0016

摘要： Mold cycle time is accelerated by employing thermally insulating surface temperature boosters, which are of a minimum thickness to promote cooling by heat transfer through the boosters. According to the thermal transfer properties of the insulating boosters and the respective temperatures of the molten material and the dies, the temperature of the cavity surface is raised by contact with the molten material to equal or exceed the temperature required to produce a molded article, preferably just until the time that the mold is fully filled. Heat transfer through the boosters to the dies then cools and solidifies the molded article until it can be removed from the mold. The temperature boosters result in increased cavity surface temperatures, such that the mold dies can be kept at substantially lower temperatures. The overall result is a reduction in mold cooling time and therefore acceleration of mold cycling.

摘要翻译： 通过使用绝热表面温度升高器来加速模具循环时间，这些绝热表面温度升高器具有最小厚度，以通过通过助推器的热传递促进冷却。 根据绝缘助推器的热传递特性以及熔融材料和模具的相应温度，通过与熔融材料的接触使空腔表面的温度升高至等于或超过制造模塑制品所需的温度 直到模具完全充满的时候。 通过增压器的热传递到模具然后冷却和固化模塑制品，直到其可以从模具中移除。 温度升高器导致空腔表面温度升高，使得模具可以保持在基本上较低的温度。 总体结果是减少了模具冷却时间，从而减少了模具循环的加速。

公开(公告)号：US5324473A

公开(公告)日：1994-06-28

申请号：US709639

申请日：1991-06-03

申请人： Frank J. Baresich

发明人： Frank J. Baresich

IPC分类号： B29C45/00 ,  B29C45/26 ,  B29C45/37 ,  B29C45/73

CPC分类号： B29C45/00 ,  B29C45/2642 ,  B29C45/37 ,  B29C45/73 ,  B29C2045/7356 ,  B29L2011/00

摘要： Methods and apparatus for molding a thermoplastic article bring the surface of the mold cavity above the flow stress relaxation temperature of the molten plastic during molding of a part sufficiently long enough to relax the resin at the surface of the molded part and produce negligible residual stress. The surface of the mold cavity is maintained above the flow stress relaxation temperature of the molten plastic as the center of molten plastic in the mold cavity cools from a temperature above the solidification temperature toward the solidification temperature, thereby reducing flow-induced and temperature gradient induced stresses in the solidified mold material of the molded part. The heat of the molten plastic introduced into the mold is used as the source of the heat for heating the surface of the mold cavity. A layer of thermal flow control material about the mold cavity has a mathematical product of thermal conductivity, specific heat and density and appropriate thickness, so that heat from the molten plastic introduced into the mold cavity raises the temperature of the surface of the mold cavity above the flow stress relaxation temperature of the plastic being molded. The methods and apparatus are particularly useful for the molding of amorphous and crystalline resin parts and for rewritable optical data storage discs and optical lenses with minimized birefringence.

摘要翻译： 用于模制热塑性制品的方法和设备使模腔的表面在模制期间的熔融塑料的流动应力松弛温度高于足够长的时间以使模制部件的表面处的树脂松弛并产生可忽略的残余应力。 当模腔中的熔融塑料的中心从凝固温度以上的温度朝向固化温度冷却时，模腔的表面保持在熔融塑料的流动应力松弛温度以上，从而减少流动诱导和温度梯度诱导 在模制件的固化模具材料中的应力。 引入模具的熔融塑料的热量被用作加热模腔表面的热源。 围绕模具腔的热流控制材料层具有导热性，比热和密度以及合适厚度的数学乘积，从而引入模腔中的熔融塑料的热量使上模具腔表面的温度升高 塑性塑料的流动应力松弛温度。 所述方法和装置对于非晶和结晶树脂部件的模制以及具有最小双折射的可重写光学数据存储盘和光学透镜是特别有用的。

公开(公告)号：US06276656B1

公开(公告)日：2001-08-21

申请号：US09421189

申请日：1999-10-19

申请人： Frank J. Baresich

发明人： Frank J. Baresich

IPC分类号： B29C4573

CPC分类号： B29C45/37 ,  B29C45/2642 ,  B29C45/73 ,  B29L2011/0016

摘要： Mold cycle time is accelerated by employing thermally insulating surface temperature boosters, which are of a minimum thickness to promote cooling by heat transfer through the boosters. According to the thermal transfer properties of the insulating boosters and the respective temperatures of the molten material and the dies, the temperature of the cavity surface is raised by contact with the molten material to equal or exceed the temperature required to produce a molded article, preferably just until the time that the mold is fully filled. Heat transfer through the boosters to the dies then cools and solidifies the molded article until it can be removed from the mold. The temperature boosters result in increased cavity surface temperatures, such that the mold dies can be kept at substantially lower temperatures. The overall result is a reduction in mold cooling time and therefore acceleration of mold cycling. When the molded article is an optical disc, where the digital information is transfered to at least a part of a surface of the optical disc from a stamper that forms at least a part of the cavity surfaces, a stamper heating means can be used to improve the quality of optical performance. Typically, the stamper may contact high thermal conductivity materials at or beyond the outside diameter of the mold cavity, creating a path for the heat to flow from and cool the outer edge of the optical disc excessively. Transfer of the pits from the stamper is more difficult in the cooler material at the outer edge of the disc, reducing pit quality, and stresses are also created at the outer edge of the disc which cause birefringence, resulting in reduced optical performance. The stamper heating means increases the temperature of the stamper at the area of contact enough to reduce, stop, or even reverse the direction of the heat flow.

摘要翻译： 通过使用绝热表面温度升高器来加速模具循环时间，这些绝热表面温度升高器具有最小厚度，以通过通过助推器的热传递促进冷却。 根据绝缘助推器的热传递特性以及熔融材料和模具的相应温度，通过与熔融材料的接触使空腔表面的温度升高至等于或超过制造模塑制品所需的温度 直到模具完全充满的时候。 通过增压器的热传递到模具然后冷却和固化模塑制品，直到其可以从模具中移除。 温度升高器导致空腔表面温度升高，使得模具可以保持在基本上较低的温度。 总体结果是减少了模具冷却时间，从而减少了模具循环的加速。 当模制品是光盘，其中数字信息从形成至少一部分空腔表面的压模传送到光盘的表面的至少一部分时，可以使用压模加热装置来改善 光学性能的质量。 通常，压模可接触或超过模腔外径处的高导热材料，从而产生用于热量从光盘的外缘流过并冷却光盘外缘的路径。 在盘的外缘处的冷却材料中转移凹坑更困难，降低了凹坑质量，并且在盘的外边缘也产生应力，这导致双折射，导致光学性能降低。 压模加热装置在接触区域增加压模的温度以足以减少，停止或甚至逆转热流的方向。