摘要:
A process produces a polylolefin-based resin expanded beads molded article that is excellent in bending deflection characteristics, high in porosity, low in bulk density and light in weight, and has interconnected void spaces. The process comprises filling, in a mold cavity, multi-layered polylolefin-based resin expanded beads each of which has a cylindrical, polylolefin-based resin expanded core layer and a polylolefin-based resin outer layer covering the expanded core layer and which satisfy specific requirements, introducing steam in the mold cavity to heat the multi-layered expanded beads filled in the mold cavity to fuse bond and mold the multi-layered expanded beads in the mold cavity.
摘要:
An image pick-up apparatus is disclosed which allows a reduction in degradation of images associated with a changed image magnification due to movements in a focus direction during image pick-up operation. The image pick-up apparatus has an image pick-up controller which performs a plurality of image pick-up operations for producing a single image and performs focus adjustment operation before each of the image pick-up operations to produce a first plurality of images, and an information producer which produces information on an image magnification of each of the first plurality of images. The image-pickup apparatus also has an image producer which produces a second plurality of images based on the first plurality of images and the information on the image magnification, and an image combiner which combines the second plurality of images to produce a single image.
摘要:
An expanded polypropylene bead for forming a dielectric material, including a polypropylene resin containing a ceramic in an amount of from 10 to 80 wt %, having an apparent density of from 0.03 to 1.7 g/cm3, having an intrinsic endothermic peak specific to the polypropylene resin on a DSC curve obtained by a differential scanning calorimetry, and also an endothermic peak at a higher temperature side of the intrinsic endothermic peak, and in that a caloritic value of the endothermic peak at the higher temperature side represents from 2 to 35% of a caloritic value of the peaks of the entire endothermic curve.
摘要翻译:一种用于形成电介质材料的发泡聚丙烯珠粒,其包括含有10至80重量%的陶瓷的聚丙烯树脂,其表观密度为0.03至1.7g / cm 3,具有 在通过差示扫描量热法获得的DSC曲线上对聚丙烯树脂特异的固有吸热峰以及在本征吸热峰的较高温度侧的吸热峰,并且在较高温度下的吸热峰的热值 侧面占整个吸热曲线的峰值的热值的2-35%。
摘要:
A process of producing a foamed molding, wherein expanded, substantially non-crosslinked polypropylene-based resin beads are heated in a mold to fuse-bond the beads together into a unitary body. Each of the expanded beads has been surface-modified with an organic peroxide.
摘要:
An image-taking apparatus is disclosed which allows a selection of a type of image stabilization to be used from optical image stabilization and electronic image stabilization as required to provide an excellent output image. The image-taking apparatus has an image generator which is operable in a first mode in which it performs electronic image stabilization processing based on a plurality of images sequentially taken with an image-pickup device to generate an output image and a second mode in which it generates an output image without performing the electronic image stabilization processing on an image taken with the image-pickup device. The image-taking apparatus also has a controller which causes image stabilization operation to be performed through driving of an optical system in both of the first and second modes and selects one of the first mode and the second mode.
摘要:
An expansion-molded article (foamed body) produced by using foamed and expanded beads, and having open voids has sound absorbing qualities, and can be used as a sound absorbing material. A sound absorbing material which is able to attain a high sound absorption coefficient in a wide acoustic frequency range is provided by a molded article produced by using resin particles, having through hole(s) and a porosity of 45 to 80% in a most densely packed state. The void content of the molded article is 10 to 60%, and the bulk density thereof is 0.01 to 0.6 g/cm3. The molded article has not less than 3 continuous center frequency measuring points at which the sound absorption coefficient is at least 70%, and not less than 7 continuous center frequency measuring points at which the sound absorption coefficient is at least 50% in the sound absorption coefficients at the center frequencies of 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 and 3150 (Hz) as determined by the measuring method of reverberant absorption coefficient prescribed in JIS A 1409.
摘要翻译:通过使用发泡和膨胀的珠粒产生并且具有开放空隙的发泡模制品(发泡体)具有吸音特性,并且可以用作吸音材料。 能够在广泛的声频范围内获得高的吸音系数的吸音材料是通过使用具有通孔的树脂颗粒和最密集的孔隙率为45-80%的树脂颗粒制成的模制品 包装状态。 成型体的空隙率为10〜60%,堆积密度为0.01〜0.6g / cm 3。 模制品具有不少于3个连续的中心频率测量点,其吸声系数至少为70%,吸声系数在吸声中至少为50%时,连续的中心频率测量点不少于7个 通过JIS A 1409规定的混响吸收系数的测量方法确定的中心频率为250,315,400,500,630,800,1000,1250,1600,2000,2500和3150(Hz)的系数。
摘要:
A composite material including a polypropylene resin molded body having a melting point MB.degree. C., and a foamed body of expanded particles fuse-bonded to the molded body, wherein the foamed body has at least two endothermic peaks in DSC curve thereof at peak temperatures of 135.degree. C. or more, wherein the highest temperature endothermic peak thereof is at a peak temperature of PH.degree. C. which is not lower than (MB-5).degree. C. and has such an area at temperatures not lower than (MB-5).degree. C. that corresponds to a calorific value in the range of at least 8 J/g, and wherein the peel strength between the molded body and the foamed body is at least 1.5 kg/15 mm. The composite material is produced by molding the expanded particles in a mold cavity in which the molded body is previously placed.
摘要:
A digital audio tape recorder having a function of reproducing the magnetic tape with digital data recorded thereon in the state of high-speed travelling by a plurality of rotary heads for the purpose of high-speed search and cue/review. In high-speed search, the parity of the read digital data is checked to select the digital data identified by the greatest majority. The data are selected after discriminating the data supplied from the sub code area 1 from the data supplied from the sub code area 2 in REW search but without such discrimination in FF search. In cue/review, the number of identified parities is counted for each of the plurality of rotary heads. The digital data read out by the magnetic head which has supplied the digital data having a smaller number of identified parities is prevented from reproduction. The digital data read out by the magnetic head which has supplied the digital data having a larger number of identified parities is interpolated and reproduced.
摘要:
A seed beads dispersing disperse system is obtained by dispersing olefin resin seed beads 1 with a specific tubular shape in an aqueous medium. Then, the olefin resin seed beads 1 are impregnated with styrene monomers and the styrene monomers are polymerized in the presence of a polymerization initiator by heating at a temperature in a specified range, to thereby obtain tubular thermoplastic resin composite beads. Expandable thermoplastic resin composite beads obtained by impregnating the thermoplastic resin composite beads with a blowing agent, expanded thermoplastic resin composite beads obtained by foaming and expanding the expandable thermoplastic resin composite beads, and a foamed molded article formed from the expanded thermoplastic resin composite beads by molding are also obtained.
摘要:
A process of producing a foamed molding, wherein expanded, substantially non-crosslinked polypropylene-based resin beads are heated in a mold to fuse-bond the beads together into a unitary body. Each of the expanded beads has been surface-modified with an organic peroxide.