摘要:
A leather-like sheet having hills on the surface thereof is characterized by having a composite layer comprising nap-like ultra fine fibers connected to fibers constituting a substrate layer and an elastic polymer (B) joined to the ultra fine fibers, on one surface of the substrate layer comprising the ultra fine fibers and an elastic polymer (A), having coating layers consisting mainly of an elastic polymer (C) on the top portions of the hills on the surface of the sheet, and further having through pores reaching the substrate layer through the surface in the side portions between the top portions and the valley bottom portions of the hills. Further, it is preferable that the coating layer has a multi-layered structure having two or more layers, and it is preferable that the surface layer of the coating layer contains a tackifier. Furthermore, it is preferable that the tackifier is a liquid rubber or a rosin resin, and it is preferable that the liquid rubber is a synthetic liquid rubber having a molecular weight of 800 to 5,000.
摘要:
A surface material for balls, formed of a sheet-shaped material having a coating layer formed from an elastic polymer on one surface of a base material layer, (1) said coating layer being formed of three layers C-1, C-2 and C-3 which are arranged in the order of C-1, C-2 and C-3 from a front surface side, (2) the layer C-3 being present on the base material layer side and formed from a porous elastic polymer, (3) the layer C-1 being present on the front surface side and being formed from an elastic polymer containing a tackifier, and (4) the coating layer being formed from the elastic polymers having fine through holes reaching the base material layer from the front surface side or having no such fine through holes, and a ball having a surface to which the above surface material is bonded. The present invention provides a surface material for balls for ball games, which is excellent in gripping characteristic at a moistened time and is also excellent in abrasion resistance and impact absorption capability.
摘要翻译:一种用于球的表面材料,由在基材层的一个表面上由弹性聚合物形成的涂层的片状材料形成,(1)所述涂层由三层C-1,C-2和 C 3,其从前表面侧以C-1,C-2和C-3的顺序排列,(2)层C 3存在于基材层一侧上,并由多孔弹性聚合物 ,(3)层C 1存在于表面侧,由含有增粘剂的弹性聚合物形成,(4)由弹性聚合物形成的涂层,其具有从基材层到达基材层的细孔 前表面侧或没有这种细小的通孔,以及具有与上述表面材料接合的表面的球。 本发明提供一种用于球形游戏的球的表面材料,其在湿润时间的抓持特性优异,并且耐磨性和冲击吸收能力也优异。
摘要:
A skin material for balls which is a sheet-form material comprising a base layer and formed on one side there of a coating layer made of a polymeric elastomer, characterized in that (1) the coating layer is composed of three layers (C-1), (C-2), and (C-3) disposed in this order from the surface side, (2) the layer (C-3) on the base layer side is made of a porous polymeric elastomer, (3) the layer (C-1) on the surface side is made of a polymeric elastomer containing a pressure-sensitive adhesive, and (4) the coating layer comprises one or more polymeric elastomers which have or do not have fine through-holes extending from the surface side to the base layer; and a ball having the skin material bonded to the surface. The skin material for ball-game balls brings about excellent wet gripping and is excellent also in wearing resistance and impact absorption.
摘要:
A method for producing an artificial leather sheet includes (i) coating a solution including an elastic polymer (B) on a substrate layer for forming a composite layer on a surface of the substrate layer, wherein the substrate layer includes ultra fine fibers and an elastic polymer (A), and the substrate layer has ultra fine fiber naps on one surface, the fineness of the ultra fine fibers is 0.0001 to 0.05 dtex, the composite layer includes ultra fine fiber naps and an elastic polymer (B), the ultra fine fiber naps are connected to the fibers constituting the substrate layer, and the elastic polymer (B) is joined to the ultra fine fibers, (ii) pressing the surface of the sheet with an emboss roll for forming hills, and (iii) then coating the top portions of the hills with a solution consisting mainly of an elastic polymer (C).
摘要:
A leather-like sheet having hills on the surface thereof is characterized by having a composite layer including nap-like ultra fine fibers connected to fibers constituting a substrate layer and an elastic polymer (B) joined to the ultra fine fibers, on one surface of the substrate layer including the ultra fine fibers and an elastic polymer (A), having coating layers consisting mainly of an elastic polymer (C) on the top portions of the hills on the surface of the sheet, and further having through pores reaching the substrate layer through the surface in the side portions between the top portions and the valley bottom portions of the hills. Further, it is preferable that the coating layer has a multi-layered structure having two or more layers, and it is preferable that the surface layer of the coating layer contains a tackifier. Furthermore, it is preferable that the tackifier is a liquid rubber or a rosin resin, and it is preferable that the liquid rubber is a synthetic liquid rubber having a molecular weight of 800 to 5,000.
摘要:
A semiconductor light emitting device includes a vertical aperture produced at a main surface of a semi-insulating or insulating substrate, a transverse aperture provided in the substrate communicating with the vertical aperture, a conducting semiconductor layer buried in the vertical aperture and the transverse aperture, a groove produced by etching the substrate from the surface thereof until reaching the conducting semiconductor layer at a portion of the transverse aperture, and a light emitting element produced in the groove, and the light emitting region of the element being buried in the groove and connected with the buried conducting semiconductor layer. Accordingly, no pn junction exists at the periphery of the light emitting region, and a semiconductor light emitting element of quite low parasitic capacitance is obtained at high yield. A planar structure in which two electrodes are produced at the same plane is obtained, resulting in ease of integration and enhancement in the integration density.
摘要:
A semiconductor light emitting device includes a vertical aperture produced at a main surface of a semi-insulating or insulating substrate, a transverse aperture provided in the substrate communicating with the vertical aperture, a conducting semiconductor layer buried in the vertical aperture and the transverse aperture, a groove produced by etching the substrate from the surface thereof until reaching the conducting semiconductor layer at a portion of the transverse aperture, and a light emitting element produced in the groove, and the light emitting region of the element being buried in the groove and connected with the buried conducting semiconductor layer. Accordingly, no pn junction exists at the periphery of the light emitting region, and a semiconductor light emitting element of quite low parasitic capacitance is obtained at high yield. A planar structure in which two electrodes are produced at the same plane is obtained, resulting in ease of integration and enhancement of the integration density.
摘要:
A buried heterojunction semiconductor laser appropriate for integration with other electronic circuitry and method of producing same, in which the width of a central stripe of the active region can be reduced beyond the physical size limitations of the connecting electrode so as to allow the semiconductor laser to oscillate in a stable manner and with low threshold current. The semiconductor laser is provided with a portion of the surface of the upper cladding layer located above the disordered active layer regions electrically connected with the upper cladding layer located above the nondisordered central stripe. As a result, the central stripe electrode can be of a width larger than that of the central stripe itself.
摘要:
The method forms a transparent polishing pad by first step forming a plurality of openings through a disk-shaped pad body. The plurality of openings is distributed about the disk-shaped pad body and a transparent window within a portion of the pad body and the transparent window. Then sealing the openings in the transparent window with a transparent material allows transport of polishing fluids through the openings in the disk-shaped pad body and prevents transport of the polishing fluids through the transparent window.
摘要:
Element production process in a method for producing an embedded type optoelectronic integrated circuit comprising an optical element part and a signal processing part, includes steps of producing a mask film on a surface of the substrate and removing a predetermined region of the film to produce a selective growth mask, producing a concave portion at a predetermined region on the surface of the substrate by etching using the selective growth mask, producing a crystal layer which is to be an optical element part in the concave part by crystal growth using the selective growth mask, flattening the surface of the crystal layer by grinding swelling crystal at the edges of the concave portion, and removing the selective growth mask and conducting mirror polishing by mechanochemical etching. Therefore, even when an optical device is embedded in the substrate using crystal growth method, a step due to swelling crystal does not arise on the substrate and .parts of wafer damaged by grinding is removed. Thus, the following process is eased.