Idemitsu Petrochemical Co., Ltd.

Taiheiyo Cement Corporation

Other

Toyota Jidosha Kabushiki Kaisha

Prime Polymer Co., Ltd.

Katsuhiko Tada

Minoru Sugawara

Tetsuya Nakamura

Koki Hirano

Tomoyuki Obara

Hiroaki Mori

Risa Nakayama

Shinpei Maehori

Shingo Sugiyama

Katsuya Kono

Hirofumi Yamada

Hiroshi Takai

Ken Fukuda

Shoichi Miura

Sueki Sugawara

Shigekazu Kumazaki

Hiroshi Jounishi

Yoshihide Endou

Provided is a cement composition that has high fluidity (for example, a 0-drop flow value of 200 mm or more) before curing and exhibits high compressive strength (for example, 320 N/mmor more) after curing. The cement composition includes a cement, a silica fume having a BET specific surface area of from 10 m/g to 25 m/g, an inorganic powder having a 50% cumulative particle size of from 0.8 &#x3bc;m to 5 &#x3bc;m, a fine aggregate having a maximum particle size of 1.2 mm or less, a water reducing agent, an antifoaming agent, and water. The ratio of the cement is from 55 vol % to 65 vol %, the ratio of the silica fume is from 5 vol % to 25 vol %, and the ratio of the inorganic powder is from 15 vol % to 35 vol % in the total amount of 100 vol % of the cement, the silica fume, and the inorganic powder.

Cement composition and manufacturing method for cement cured body using same

A molding method which includes charging a resin composition in molten state containing not less than 7 wt % to less than 30 wt % of a fibrous fiber (A) and more than 70 wt % to not exceeding 93 wt % of a resin (B) into a die for shaping purpose when a temperature of the die is in the range of [the Vicat softening point minus 20&#xb0; C.] of resin (B) to less than a melting point thereof, when resin (B) is crystalline resin, or when a temperature of the die is in the range of [the Vicat softening point minus 20&#xb0; C.] to [the Vicat softening point plus 20&#xb0; C.] of the resin (B), when resin (B) is non-crystalline resin, cooling the die after shaping to temperature which allows taking-out of a molded product.

Molding method and resin moldings

Blow-molding molds and having parison shutters and for preventing an inflation of the parison toward the outside of the molds and are used in a blow-molding method of the present invention. In other words, a closed space for preventing the parison from inflating out of the molds and are formed by the parison shutters and and a predetermined air is secured in the parison in a frame clamping step (B). In the subsequent mold clamping step (C), the pressure inside the parison starts to be increased when the molds and press the parison , so that the parison can be continuously in contact with the die design surface . Accordingly, since the parison can be uniformly contracted by cooling, molding failure such as streaks and uneven pattern transfer can be avoided, thus obtaining a blow-molded product having good appearance.

Blow molding method, blow molded product and blow molding mold

Provided is a method for producing blow moldings having a relatively large size through blow molding by use of a simple facility. The method including the steps of feeding a melt parison of crystalline resin into the space between molds, clamping the molds, blowing a pressurized fluid into the interior of the parison so as to cause the parison to be into close contact with the inner surfaces of the molds and to solidify the parison, wherein, while the parison and the mold inner surfaces are in close contact, the temperature of inner surfaces of the molds is maintained at a temperature from a temperature 10&deg; C. lower than the crystallization temperature of the crystalline resin to the melting point of the resin, and the parison is removed from the molds after the parison is cooled through introduction thereinto or discharge therefrom, during or after blowing-in of the pressurized fluid, of a cooling medium not higher than room temperature. An apparatus comprises a blow molding machine; a forming mold which is used in combination with the blow molding machine for producing a blow molding, the forming mold having degassing pores having a diameter of 100 &mgr;m or less in the surface of the mold at intervals (a pitch) of 50 mm or less; and means for introducing and discharging a cooling medium into or from a parison formed through the mold.

Method and apparatus for producing a blow molded article

Resin-made shock absorbing member for a vehicle and method for producing

Tubular parison of a molten resin to such an extent as to melt undergoes a pre-blow with a blow molding apparatus, whereupon the blown tubular parison is clamped between dies of a blow molding apparatus, and also, is mutually weld together with parts of the inside faces of the tubular parison to form a multiple of isolated hollows in the parison. Gas is fed through a multiple of gas feed nozzles which are provided in the die into the hollow portions. A number of the hollow portions are opened in a second process to form a functional part.

Car interior member and method for producing the same

The car interior member and its molding method are offered to improve recycling and to reduce the number of parts. The instrument panel 10 as the car interior member is made by molding integrally the core member 11 organizing the main structure of certain area of car interior and the functional member 12, 13, 14 having particular function and attached to the core member 11 by the blow molding. On the occasion of then, the number of parts can be more reduced when the base layer arranging the most inside and the foamed layer and the surface layer arranging outside of the base layer are effected by the multilayer blow molding in case of the instrument panel 10 formed with the multi-layer construction.

Car interior member and molding method of the same

Growing community of inventors

Ichihara, Japan

Katsuhiko Tada