Toyota Boshoku Kabushiki Kaisha

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Toyoda Boshoku Corporation

Nippondenso Co., Ltd.

Toyoda Gosei Co., Ltd.

Kanto Auto Works, Ltd.

Hiroshi Koyama

Tsutomu Onoue

Izuru Shoji

Keigo Asano

Tadatsugu Nakamura

Mai Oyamada

Tetsuya Kuno

Tsuyoshi Arai

Kazuya Yoshijima

Yoshiaki Sumiya

Takahiro Yamazaki

Tadayoshi Takahara

Kenta Fujii

Yoshihito Saigo

Tatsuya Inoyama

Yuuichi Suetsugu

A method for adjusting the softening point of a pitch material includes heating the pitch material to form molten pitch material, and rising the softening point of the pitch material by moving a plurality of movable members so that the movable members repetitively move at least some of the molten pitch material out of a liquid level of the molten pitch material and back to the molten pitch material.

Method and apparatus for adjusting pitch material

A melt spinning apparatus has an apparatus body, and the apparatus body includes a spinning nozzle through which a molten resin is extruded into a filament, a primary air channel for directing primary airflow to the filament of the molten resin extruded from the spinning nozzle, and a secondary air channel for directing secondary airflow to the filament at a position downstream of the primary air channel. A part, which is closer to the spinning nozzle, of a wall of the secondary air channel that defines an air exit of the secondary air channel is chamfered to straighten the secondary airflow.

Melt spinning apparatus and melt spinning method

A melt spinning apparatus includes an apparatus body and a nozzle for extruding melted resin, a primary hot air passage formed around the nozzle, and a secondary hot air passage formed in a zone outside of the primary hot air passage, which are formed in the apparatus body. The primary hot air passage discharges primary hot air onto fibers of the melted resin extruded from the nozzle. The secondary hot air passage discharges secondary hot air to maintain the temperature of the primary hot air. The discharge angle of the secondary hot air from the secondary hot air passage is set in a range of 0&#xb0; to 50&#xb0; with respect to the direction of the melted resin extruded from the nozzle. The secondary hot air forms an air curtain that blocks the atmospheric air.

Melt spinning method

A melt spinning apparatus includes an apparatus body, a nozzle configured to extrude melted resin in the apparatus body, and a barrel having an air discharge passage arranged around this nozzle to discharge hot air. The discharge passage includes a sloped passage and a parallel passage that extends along the nozzle. At an intersection of imaginary lines extending along the centerlines of the sloped passage, an imaginary merging section is defined. An open end of the nozzle is positioned on the downstream side of the imaginary merging section of the hot air blown diagonally forward toward a periphery of the nozzle. To manufacture a sheet of a nonwoven fabric, the melted resin is discharged from the nozzle and then the hot air swirling diagonally forward is blown toward the periphery of the nozzle. This causes the melted resin to be formed into spiral fibers. Those fibers are blown onto the belt of a conveyor belt apparatus to manufacture a nonwoven fabric sheet.

Melt spinning method and apparatus

A nonwoven fabric manufacturing apparatus has a spinning portion that spins fiber and an air delivery portion that blows air toward fiber spun out of the spinning portion. A roller is provided below the spinning portion. Fiber spun out of the spinning portion is blown onto the circumferential surface of the roller by the air blown out of the air delivery portion, so that nonwoven fabric is formed on the roller. A pair of guide plates is located below the roller. Entrained air flow is generated when the air blown out of the air delivery portion flows along the circumferential surface of the roller. Each guide plate interrupts and separates the entrained air flow from the circumferential surface of the roller.

Manufacturing apparatus for nonwoven fabric

A valve case, which is a metal component, and an outer shell portion of a cylinder head cover, which is a resin component, are joined together through a seal material. First, a recess formed in the valve case is filled with a seal material in a liquid form. A skin layer is then formed by curing the surface of the seal material. Subsequently, the outer shell portion is formed by supplying a synthetic resin material onto the valve case in such a manner as to cover the skin layer, which is provided on the surface of a non-cured portion of the seal material. At this stage, the skin layer is broken by supply pressure of the synthetic resin material and thus the synthetic resin material and the non-cured portion of the seal material are joined together as an integral body.

Method for joining first and second members to each other through a joint material

The method of predicting the amount of deformation due to shrinkage of a molded article of the present invention finds a support point P of the bending moment M from a distribution of shrinkage rates of a molding material forming a molded articleand uses the support point P to predict the amount of deformation. At that time, it is preferable to use the support point P to find the bending moment M and to use the bending moment M to predict the amount of deformation.

Method and apparatus for prediction of amount of deformation due to shrinkage of molded article

A manufacturing method for a synthetic resin hollow molded body includes a first injection molding process, a positioning process and a second injection molding process in which each of the contact portions of the first split assembly member, second split assembly member, and the third split assembly member is made to contact the corresponding contact portion and each of the contact portions is joined with the corresponding contact portion by a second injection between the first die and the second die.

Manufacturing method for synthetic resin hollow molded body

A manufacturing device for a synthetic resin hollow molded body molds a first split assembly member, a second split assembly member, and a third split assembly member by a first injection, and joints each of contact portions of the three members with a corresponding contact portion by a second injection. The manufacturing device includes an ejecting mechanism which moves the second split assembly member in a die opening/closing direction, a rotating mechanism which rotates the third split assembly member around a shaft center in the die opening/closing direction, and a sliding mechanism which slides the second split assembly member and the third split assembly member in a direction perpendicular to the die opening/closing direction. According to the manufacturing device, while the dies are open after the first injection, the three members are made different by the ejecting mechanism, and then the three members are made to face one another by the rotation mechanism and the sliding mechanism in the die opening/closing direction.

Manufacturing device and manufacturing method for synthetic resin hollow molded body

An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is heated to a temperature higher than a temperature of an inner surface of the die set. The hold-member surface contacts the molten resin. The die-set inner surface is exposed in the cavity.

Growing community of inventors

Tajimi, Japan

Hiroshi Koyama