Sumitomo Chemical Company, Limited

Tomoo Hirota

Yoshiaki Togawa

Shinichi Nagaoka

Hirokazu Matsui

Toru Yabe

Described herein is a roof member or a ceiling member, which is capable of reducing cooling and heating energy consumption by reducing influent and effluent heat amounts between indoor and outdoor environments in such a situation that the indoor temperature is kept constant by use of cooling and heating equipment independently of the outdoor air temperature changes. The disclosed member for roofing or ceiling includes an outdoor-side heat insulating layer (A); an indoor-side heat insulating layer (B); and a heat storage layer between the outdoor-side heat insulating layer (A) and the indoor-side heat insulating layer (B).

Roof member or ceiling member, and construction

Described herein is an exterior wall member capable of reducing cooling and heating energy consumption by reducing influent and effluent heat amounts between indoor and outdoor environments in such a situation that the indoor temperature is kept constant by use of cooling and heating equipment independently of the outdoor air temperature changes, and to provide a construction including the exterior wall member. The disclosed exterior wall member includes an outdoor-side heat insulating layer (A); an indoor-side heat insulating layer (B); and a heat storage layer between the outdoor-side heat insulating layer (A) and the indoor-side heat insulating layer (B).

Exterior wall member and construction

The object of the present invention is to realize an optimum resin product design even in the event of conducting injection molding of an arbitrary shape resin product, taking into account of the mold clamping force required for molding and the capacity of an available injection molding device. When a resin product to be molded by injection molding is designed, the mold clamping force required for injection molding of the resin product having a specified shape is determined using a computer-aided optimization method and then the design of the resin product is determined based on the thus obtained mold clamping force.

Method for designing a resin product, method for producing a resin product and injection molding device

An object of the present invention is to achieve favorable injection molding with reduced mold clamping force required for molding and with suppression of weld line occurrence without repeating trial and error manually, by prompt calculation of adequate production parameters, when conducting injection molding of resin products. When the injection molding is conducted using a mold having a plurality of resin inflow conduits N, R, G, G, and Gto the cavity CV, the combination of a numerical analysis method for calculating the injection molding process and a computer-aided optimization method, derives the production parameters which determine time-sequentially the inflow of resin material through resin inflow conduits.

Method for determining a production parameter of an injection molding, method for producing an injection molding, injection molding device and program

An object of the present invention is to provide a method for designing a mold and a method for producing an injection molding in which a mold clamping force or weld line occurrence can be more accurately controlled in the case of injection molding of a resin product. In the case where an injection molding is carried out using a mold having a plurality of resin inflow conduits G, G, Gto a cavity CV, a mold design parameter in relation to at least one of the arrangement, the shapes and the sizes of the resin inflow conduits is determined by the combination of a numerical analysis method for calculating an injection molding process and a computer-aided optimization method, for the purpose of obtaining a preferable injection molding condition. Thereby the mold design parameter can be promptly and accurately calculated without repetition of trial and error manually.

Method for designing a mold, method for producing an injection molding, program and injection molding device

An object of the invention is to provide an impact energy absorbing structure in the form of resin moldings such as interior components of automobiles and other impact energy absorbing structures, with better impact properties, particularly the performance in absorbing impact energy to passenger heads. The invention relates to an impact energy absorbing structure for absorbing the kinetic energy of a colliding object by means of its own deformation, wherein when a certain colliding object collides with the impact energy absorbing structure at a certain velocity, the relationship between dimensionless displacement D, where the deformation of the impact energy absorbing structure is normalized by the permissible deformation, and the dimensionless energy E, where the kinetic energy absorbed by the impact energy absorbing structure is normalized by the kinetic energy of the colliding object prior to collision, meets E&#x3e;D.

Impact energy absorbing structure

A design variable optimization system including a performance value calculating section for performing an analysis on a design article using numerous design variables and for calculating a performance value for evaluating the performance of the design article using each of the design variables, based on the result of analysis. A design variable determining section is provided for determining an optimal design variable among the design variables, based on each of performance values calculated by the performance value calculating section and a certain evaluation criterion. An analysis end time determining section is provided for determining an end time of the analysis in the performance value calculating section so that a difference between an end time of a period necessary for the calculation of the performance value and the end time of the analysis becomes a predetermined, fixed value.

Design variable optimization system and design variable optimization method

A bumper reinforcing member formed of a resinous material is provided between a bumper fascia and a vehicle body. The reinforcing member includes a plurality of horizontal plates disposed approximately along a horizontal plane and a plurality of vertical plates integrally connected to the horizontal plates and disposed approximately along a vertical plane. A line connecting the position at which an impact is received at the front end of the horizontal plate on the bumper fascia side and a mounting position on the rear of the reinforcing member on the vehicle body side forms an angle with the horizontal plane.

Bumper reinforcing member

A bumper reinforcing structural unit that can be manufactured at low cost, and provides superior impact resistance in a light weight body. The bumper reinforcing structural unit made of a polymeric resin includes a frame body portion having an upper plate, a lower plate and two end plates for forming an interior space therein. Transverse partition plates divide the interior space of the frame body portion along a longitudinal direction into a central space and two end spaces. A front plate covers the front of the central space, and two back plates cover the back of the end spaces.

Growing community of inventors

Ichihara, Japan

Tomoo Hirota