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公开(公告)号：US5693348A
公开(公告)日：1997-12-02
申请号：US576314
申请日：1995-12-21
IPC分类号： B29C45/26 , B29K101/00 , B29L17/00 , B29D17/00 , B29C45/00
CPC分类号： B29C45/263 , B29C2045/2648 , Y10S425/81
摘要： A disc molding die includes a stationary-side mirror block disposed on a stationary die, a movable-side mirror block disposed on a movable die and facing the stationary-side mirror block so as to define a cavity in combination with the stationary-side mirror block, and a cavity ring disposed on the radially outer side of one of the stationary-side mirror block and the movable-side mirror block so as to define the outer circumferential edge of each disc substrate. The portion of the cavity ring facing the cavity is roughened. When resin is charged into a cavity, very small spaces are formed between the resin and the inner circumferential surface of the cavity ring, due to the roughened portion of the cavity ring facing the cavity. Therefore, the release resistance during die opening or releasing can be decreased. As a result, it is possible to solve the conventional problem in which the disc substrate deforms, causing the angle of warp to vary at circumferential positions and increasing the amount of surface deflection. Therefore, the quality of the disc substrate can be increased. Further, since the release operation can be performed before a molded disc substrate sufficiently shrinks, tact time can be shortened.
摘要翻译： 圆盘成形模具包括设置在固定模具上的固定侧反射镜块，设置在可动模具上并面向静止侧反光镜块的可动侧反射镜块，以便与固定侧镜组合形成空腔 并且设置在所述固定侧镜块和所述可动侧镜块之一的径向外侧上的腔环，以限定每个盘基片的外周边缘。 面向空腔的空腔环的部分被粗糙化。 当树脂被填充到空腔中时，由于空腔环的粗糙部分面向空腔，所以树脂和空腔环的内圆周表面之间形成非常小的空间。 因此，可以降低开模或释放期间的耐剥离性。 结果，可以解决盘基板变形的常规问题，导致翘曲角度在周向位置变化并增加表面偏转量。 因此，可以提高盘基片的质量。 此外，由于可以在模制盘基板充分收缩之前进行释放操作，所以可以缩短节拍时间。
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2.发明授权
公开(公告)号：US5018962A
公开(公告)日：1991-05-28
申请号：US409898
申请日：1989-09-20
CPC分类号： B29C45/263 , B29C45/40 , G11B7/26 , B29C2045/2648 , B29C2045/2657 , Y10S425/81
摘要： An injection molding die apparatus for use in the production of an optical disk substrate has a stationary die part having a mirror-finished surface, a movable die part carrying a stamper, an outer peripheral ring slidably fitting on the outer periphery of the movable die part and contactable with the stationary die part when the movable die part has been moved close to the stationary die part, such that a die cavity to be charged with injected molten plastic is formed by the mirror surface of the stationary die part, the stamper and the outer peripheral ring. First and second ejection mechanisms are provided to push the injection-molded optical disk substrate away from the stamper simultaneously both at the central portion and outer peripheral portion of the optical disk substrate, while the optical disk substrate is held in close contact with the mirror-finished surface of the stationary die part, whereby the separation of the injection-molded optical disk substrate from the stamper takes place uniformly without distortion and failure in the transfer of the track grooves.
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3.发明授权Process for producing high-quality terephthalic acid suitable for use in direct polymerization 失效适用于直接聚合的高品质对苯二甲酸生产方法
公开(公告)号：US4189603A
公开(公告)日：1980-02-19
申请号：US944216
申请日：1978-09-20
CPC分类号： C07C51/265 , Y02P20/52
摘要： A process for producing terephthalic acid of high quality suitable for use in direct polymerization comprising oxidizing a para-dialkylbenzene and/or an oxidized intermediate thereof in the liquid phase with molecular oxygen or a molecular oxygen-containing gas in the presence of an oxidation catalyst containing a heavy metal in a lower aliphatic carboxylic acid solvent, the reaction being carried out in the presence of a specified amount of a phenol. Polyesters prepared from the resulting terephthalic acid have good color.
摘要翻译： 一种适用于直接聚合的高品质对苯二甲酸的方法，包括在含有氧化催化剂的存在下，用分子氧或含分子氧的气体在液相中氧化对二烷基苯和/或其氧化的中间体， 低级脂肪族羧酸溶剂中的重金属，反应在规定量的苯酚存在下进行。 由所得对苯二甲酸制备的聚酯具有良好的颜色。
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公开(公告)号：US5417899A
公开(公告)日：1995-05-23
申请号：US183258
申请日：1994-01-19
申请人： Takehiko Kitamura
发明人： Takehiko Kitamura
CPC分类号： B29C45/561 , B29C45/263 , B29C2045/566
摘要： An injection compression molding method for compact discs or the like, includes the step of changing the clamping pressure or compression pressure, after the internal cavity pressure in the mold after injection has reached its peak, stepwise or continuously as the cooling proceeds, thereby making the applied pressure per unit area with respect to the effective pressure range constant. In a compact disc formed by this method, the residual stress after cooling is uniform, so that its optical properties are improved substantially.
摘要翻译： 用于光盘等的注射压缩成型方法包括在冷却进行之后注射已经达到其峰值，逐步或连续地在模具中的内腔压力之后改变夹紧压力或压缩压力的步骤，从而使 相对于有效压力范围常数，单位面积的施加压力。 在通过该方法形成的光盘中，冷却后的残余应力是均匀的，从而其光学特性得到显着改善。
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公开(公告)号：US5098281A
公开(公告)日：1992-03-24
申请号：US606280
申请日：1990-10-31
申请人： Takehiko Kitamura
发明人： Takehiko Kitamura
CPC分类号： B29C45/2701 , B29C45/38 , B29L2017/005 , Y10S425/808
摘要： An injection mold of the type in which a film gate of a resin is formed and in which shearing of the film gate is conducted by a movement of a gate cutter alone. The gate cutter has a stepped cylindrical form with a main cylindrical portion of a greater diameter and a coaxial end cylindrical portion of a smaller diameter. When the mold is closed, the end cylindrical portion being received in the bore of a confronting die leaving therebetween an annular gap of a radial size which determines a gate thickness. The outer peripheral surface of the portion of the gate cutter received in the bore of the die presenting a gate land.
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公开(公告)号：US4327226A
公开(公告)日：1982-04-27
申请号：US171510
申请日：1980-07-23
申请人： Motoo Shigeyasu , Takehiko Kitamura
发明人： Motoo Shigeyasu , Takehiko Kitamura
IPC分类号： B01J4/00 , B01J19/18 , C07C51/265 , C07C51/16
CPC分类号： C07C51/265 , B01J19/18 , B01J19/1881 , B01J4/001 , B01J2219/00101 , B01J2219/00114 , B01J2219/00162 , B01J2219/00164 , B01J2219/00182 , B01J2219/185
摘要： A process and an apparatus for producing an aromatic dicarboxylic acid by oxidizing a benzene derivative with molecular oxygen in the liquid phase in a lower aliphatic carboxylic acid as a solvent in the presence of an oxidation catalyst, wherein a starting material liquid e.g., a benzene derivative or a solution thereof in the lower aliphatic carboxylic acid, is fed into the liquid-phase reaction system in a uniformly dispersed state by being passed through a porous material causing the pressure of the starting material liquid just after passing through said porous material to drop more than about 1 kg/m.sup.2 in relation to the pressure of the starting material liquid just before passing through said porous material. The resultant aromatic dicarboxylic acid has high purity and has good color.
摘要翻译： 在氧化催化剂存在下，在低级脂肪族羧酸作为溶剂中，通过在液相中用分子氧氧化苯衍生物来制造芳族二羧酸的方法和装置，其中原料液如苯衍生物 或其在低级脂肪族羧酸中的溶液以均匀分散的状态通过穿过多孔材料而进料到液相反应体系中，导致原料液体在通过所述多孔材料之后的压力下降更多 在通过所述多孔材料之前相对于起始原料液体的压力大约1kg / m 2。 所得芳族二羧酸的纯度高，颜色好。
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公开(公告)号：US4159307A
公开(公告)日：1979-06-26
申请号：US771493
申请日：1977-02-24
申请人： Motoo Shigeyasu , Takehiko Kitamura
发明人： Motoo Shigeyasu , Takehiko Kitamura
IPC分类号： B01J4/00 , B01J19/18 , C07C51/265 , B01J8/10 , C07C63/14
CPC分类号： C07C51/265 , B01J19/18 , B01J19/1881 , B01J4/001 , B01J2219/00101 , B01J2219/00114 , B01J2219/00162 , B01J2219/00164 , B01J2219/00182 , B01J2219/185
摘要： An apparatus for producing an aromatic dicarboxylic acid by oxidizing a benzene derivative with molecular oxygen in the liquid phase in a lower aliphatic carboxylic acid as a solvent in the presence of an oxidation catalyst, wherein a starting material liquid e.g., a benzene derivative or a solution thereof in the lower aliphatic carboxylic acid, is fed into the liquid-phase reaction system in a uniformly dispersed state by being passed through a porous material causing the pressure of the starting material liquid just after passing through said porous material to drop more than about 1 kg/m.sup.2 in relation to the pressure of the starting material liquid just before passing through said porous material. The resultant aromatic dicarboxylic acid has high purity and has good color.
摘要翻译： 在氧化催化剂存在下，通过在低级脂族羧酸作为溶剂中，在液相中用分子氧氧化苯衍生物作为溶剂来制备芳族二羧酸的装置，其中原料液如苯衍生物或溶液 在低级脂族羧酸中通过穿过多孔材料以均匀分散的状态进料到液相反应体系中，导致原料液体在通过所述多孔材料之后的压力下降超过约1 kg / m 2相对于刚刚通过所述多孔材料的原料液体的压力。 所得芳族二羧酸的纯度高，颜色好。
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公开(公告)号：US5501592A
公开(公告)日：1996-03-26
申请号：US281658
申请日：1994-07-28
申请人： Takehiko Kitamura
发明人： Takehiko Kitamura
CPC分类号： B29C45/7312 , B29C45/2642 , B29C2033/042 , Y10S425/81
摘要： In an injection mold having a cavity formed between opposing faces of a fixed mold and a movable mold for defining a shape of a product, and cooling channels formed in the fixed mold and the movable mold, respectively, for cooling resins injected into the cavity, cooling channels of the movable mold are formed at positions at least opposite to those where cooling channels of the fixed mold are not formed, thereby obtaining an injection mold capable of securing uniformity of optical properties of the obtained molded article, such as birefringence and causing no deterioration of mechanical properties of the molded article such as a deflection even when a cooling time is shortened in order to increase cycle of the injection molding.
摘要翻译： 在具有形成在固定模具的相对面和用于限定产品形状的可动模具之间形成的空腔的注射模具和分别形成在固定模具和可动模具中的冷却通道用于冷却注入到腔体中的树脂， 可动模具的冷却通道形成在与没有形成固定模具的冷却通道的位置至少相反的位置处，从而获得能够确保所获得的模制品的光学性能的均匀性的诸如双折射的引模，并且不产生 即使缩短冷却时间，为了增加注射成型的循环，也能够使成形品的机械特性变差，例如挠曲。
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公开(公告)号：US5354517A
公开(公告)日：1994-10-11
申请号：US54033
申请日：1993-04-27
CPC分类号： B29C45/263 , B29C45/0001
摘要： A process for the preparation of substrate for optical disk characterized in that pellets of 4-methyl-1-pentene polymer or copolymer having a melt flow rate (MFR), as measured according to ASTM D1238 under a load of 5 kg and at a temperature of 260.degree. C., of 240-1200 g/10 min, and a melting point as measured by means of DSC of 234.degree.-240.degree. C., are injection molded into the substrate under the conditions where a temperature of at least part of a cylinder is 320.degree.-370.degree. C. and a mold temperature is not more than 55.degree. C.
摘要翻译： 一种用于制备光盘用基材的方法，其特征在于，根据ASTM D1238在负荷为5kg和温度下测量的具有熔体流动速率（MFR）的4-甲基-1-戊烯聚合物或共聚物颗粒 260℃，240-1200g / 10分钟，通过DSC测定的熔点为234〜-240℃，在至少部分温度的条件下注塑成型 的汽缸为320〜-370℃，模具温度不超过55℃。
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公开(公告)号：US4979891A
公开(公告)日：1990-12-25
申请号：US391012
申请日：1989-08-09
申请人： Takehiko Kitamura
发明人： Takehiko Kitamura
CPC分类号： B29C45/263 , B29C33/48 , B29C2045/2648 , B29C2045/2657 , B29C33/0038 , B29L2017/003
摘要： A mold for forming an optical disk base provided with a movable specular plate, a stationary specular plate, and an annular stamper having inner and outer peripheral edges. The reverse surface of the stamper is in contact with one of the specular plates, and the stamper is supported at its inner end portion by an inner stamper retainer and at its outer end portion by an outer stamper retainer. A cavity is formed between the stamper and the other one of the specular plates when the mold is closed. This mold further has: a circumference ring having an extreme end surface located inside the outer stamper retainer in the radial direction and facing a surface of the stamper, and an inner peripheral surface defining an outer peripheral surface of the cavity, the circumference ring being supported on the other specular plate so as to be movable in the mold opening/closing direction; and an actuator for moving the circumference ring between a position at which the extreme end surface abuts against the stamper and a position at which the extreme end surface is flush with the specular surface of the other specular plate or is recessed from this surface away from the cavity.
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