摘要:
A lithium ion secondary battery of this invention includes an electrode group that includes: (1) a winding core, (2) a positive electrode containing a positive electrode core member and a positive electrode active material layer carried thereon, (3) a negative electrode comprising a negative electrode core member and a negative electrode active material layer carried thereon, and (4) a porous film formed on at least one of the positive and negative electrodes. The porous film including a filler and a binder, and the positive and negative electrodes are wound around the winding core. The positive electrode and/or the negative electrode have/has, on the initial winding side, a region where the active material layer is carried on only one side of the core member. The positive electrode and/or the negative electrode further have/has a region where the active material layer is carried on neither side of the core member, at a position closer to the initial winding position than the region where the active material layer is carried on only one side of the core member. This structure of the electrode group makes it possible to reduce breakage of the porous film and improve its safety.
摘要:
A method for producing lithium ion secondary batteries includes the steps of: (A) preparing an electrode sheet with lead-forming parts, (B) intermittently forming porous insulating layers containing an inorganic oxide filler and a binder on a surface of the electrode sheet excluding the lead-forming parts, (C) connecting a lead to each of the lead-forming parts, and (D) fabricating batteries by using the electrode sheet to which the leads are connected. The step B includes: the step of applying a slurry containing the inorganic oxide filler and the binder to the outer surface of a gravure roll, and transferring the slurry applied to the outer surface of the gravure roll on a surface of the electrode sheet that is being transported by a plurality of guide rolls excluding the lead-forming part; and the step of moving at least one selected from the gravure roll and the guide rolls to make the electrode sheet away from the gravure roll in the lead-forming part.
摘要:
A porous metal material (22) is manufactured by a method comprising a step of utilizing a magnetic field to orient numerous metal staple fibers (3), and holding these metal staple fibers (3) on the metal substrate sheet (9) in a state of being more or less perpendicular thereto by means of an adhesive (19) supplied to the metal substrate sheet (9), and a step of removing the adhesive (19) by pyrolysis, and integrally joining the metal staple fibers (3) and metal substrate sheet (9) by sintering.
摘要:
A coating material application method is for forming a film while guides disposed at both ends of the tip of a nozzle in the direction of application width and protruding to a substrate are contacted with the substrate, and while the gap between at least the outlet-side edge at the tip of the nozzle and the surface of the substrate is maintained constant.
摘要:
An intermittent coating apparatus for intermittently coating a continuously running base member with a coating material includes a nozzle for discharging the coating material toward the base member and an absorption unit for controlling a flow of the coating material. The nozzle has a slit opened toward the base member and a manifold connected to the slit. The absorption unit includes a head having an inlet, an outlet, and a passage connecting the inlet and the outlet. The head is located in a housing. The absorption unit also includes a driving unit for sliding the head in the direction of a shaft located in the housing. By the sliding operation of the head, an absorption space is formed between an end face of the head and the manifold. In order to stop the coating operation, the supply of the coating material from an external supply opening to the inlet of the head is stopped by the sliding movement of the head. The sliding movement of the head also causes the coating material remaining in the nozzle to be absorbed into the absorption space. As a result, there is no coating material remaining between the nozzle and a roller provided for causing the base member to run. Accordingly, the coating material is not pulled out to the base member when the supply of the coating is stopped, and thus the leading edge and the trailing edge of coated areas of the base member can be straight lines.
摘要:
A method for producing a coating material in which ingredients including a powder and a solvent are mixed is provided. The method includes: a preliminary stirring step (100) of preliminarily stirring the ingredients; a high-speed stirring step of supplying an intermediate material obtained by the preliminary stirring step to a high-speed stirrer 300 including a container 310 and a rotational member 330 rotating at a high speed slightly inward of an inner wall surface 311 of the container, and continuously stirring the intermediate material caused to exist in the form of a film between the rotational member 330 and the inner wall surface 311 by a centrifugal force of the rotational member 330; and a vacuum defoaming step of supplying a stirred material obtained by the high-speed stirring step to a treatment tank 501, 502, 503 provided with a stirring blade to perform vacuum defoaming.
摘要:
The present invention relates to a binding agent for a magnetic recording medium which consists of a non-magnetic substrate with a magnetic layer formed thereon. The magnetic layer is composed of a finely divided ferromagnetic substance dispersed in the resinous binding agent. The binding agent consists of: a binder containing a butadiene-containing resin, having an average molecular weight of 1,000-10,000, and being selected from the group consisting of butadiene homopolymers and copolymers of butadiene with acrylonitrile and/or styrene which contains at least 60% by weight of butadiene, with the butadiene-containing resin having on the average more than 1.5 functional end groups per molecule, which are reactive with isocyanate groups; and a polyisocyanate compound having on the average not less than 2 isocyanate groups per molecule, the polyisocyanate compound being present in between 5 and 50 parts by weight, based upon 100 parts by weight of the binder. The use of this binding agent allows for greater dispersion of the ferromagnetic powder as the low molecular weight resin has a high solubility in organic solvents. Further, the butadiene-isocyanate crosslinks formed, act to improve wear resistance and make it possible to obtain a desirable elastic modulus.
摘要:
A tape cassette has a shutter which can be opened and closed for accommodating a magnetic tape which records information such as music and reproduces recorded information. The shutter is made of thermoplastic resin and hardly generates abraded powders as a result of the sliding of the shutter in contact with the casing. The shutter has engaging portions in specific configurations so as to prevent the shutter from being dislocated from the casing.
摘要:
The present invention has an object to provide a method of manufacturing an electronic tube capable of eliminating deterioration of image quality due to an excessively high electron reflection effect of a material comprising a metal element with an atomic number not lower than 70 and painted on a shadow mask and deterioration of image quality due to spontaneous peeling of a coat on the surface of the shadow mask. A paint mainly comprising a solated metal oxide or a metal alkoxide of an element with an atomic number not lower than 40 is painted to form an electron reflection coat with an amount of coating of less than 2 mg/cm2 so as to achieve coating on an electron gun side surface of a shadow mask. With this method, an electronic tube with good image quality can be manufactured.
摘要翻译:本发明的目的是提供一种制造电子管的方法,该电子管能够消除由于包含原子序数不低于70的金属元素的材料的过高的电子反射效应而导致的图像质量的劣化并且被绘制在阴影上 掩模和由于荫罩表面上的涂层的自发剥离引起的图像质量的劣化。 涂覆主要包含原子序数不低于40的元素的金属氧化物或金属醇盐的涂料,以形成涂层量小于2mg / cm 2的电子反射涂层,以便涂覆在 电子枪侧面的荫罩。 通过该方法,可以制造出具有良好图像质量的电子管。
摘要:
There is disclosed a light-screening film paint for lamps containing (1) at least one compound of either manganese oxide or an iron oxide compound doped with a metallic manganese and having the formula (FexMn1−x)2O3 where 0.95