Abstract:
The present invention solves the problem of realizing a lighter cushion body that has ample cushioning properties when a person sits or lies thereon by: providing a plurality of rod-shaped or flat plate-shaped support bodies (2) comprising a synthetic resin foam that has a bending deflection amount of 20 mm or more as measured according to the method described in JIS K7221-2:2006 and a pressing force of 2-100 N at 20 mm of deflection, and legs (3) on which the support bodies (2) are placed or fixed; using the support bodies and the legs to form a space (5) that makes it possible to bend and deform the support bodies; and arranging the plurality of rod-shaped or flat plate-shaped support bodies (2) in a row so as to be deformable.
Abstract:
A foamed body produced by using expandable particles, and having communicating pores has sound absorption characteristics, and can be used as a sound absorptive material. However, a sound absorptive material comprising such a foamed body could not attain a high sound absorbing coefficient in a wide acoustic frequency band. The subject mold body is produced by using resin particles and has sound absorption characteristics, the resin particles having through pores and a porosity in a most densely packed state of 45-80 %. The void ratio of the molded body is 10-60 %, and the bulk density thereof 0.01-0.6 g/cm . The molded body has not less than 3 continuous central frequency measuring points at which the sound absorbing coefficient is not less than 70 %, and not less than 7 continuous central frequency measuring points at which the sound absorbing coefficient is not less than 50 % in the sound absorbing coefficients at the central frequencies of 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 and 3150 (Hz) which are determined by a sound absorbing coefficient measuring method according to the reverberation method under JIS A1409.
Abstract:
Foamed particles of cross-linked aliphatic polyester resins having a gel fraction of at least 5 % by weight. The foamed particles can be obtained by cross-linking non-cross-linked aliphatic polyester resin particles with a cross-linking agent containing an organic peroxide to obtain cross-linked resin particles having a gel fraction of at least 5 % by weight, and foaming the cross-linked resin particles. Biodegradable foamed moldings are obtained by thermally foaming the foamed cross-linked aliphatic polyester resin particles in a mold.
Abstract:
An elongated bumper core of a polyolefin-based resin-containing foam having a density of 0.045-0.2 g/cm 3 and showing a compressive load of F 20 at 20 % strain, a compressive load of F 40 at 40 % strain and a compressive load of F 60 at 60 % strain when compressed by a rigid pipe having an outer diameter of 70 mm at a compression speed of 500 mm/minute, wherein the ratio F 20 /F 40 is in the range of 0.6-1.3 and the ratio F 60 /F 40 is in the range of 0.75-1.3.
Abstract:
A bumper structure useful for attachment to a front of a vehicle, including an elongated bumper beam (2) having a front face (21) provided with at least one rearwardly depressed portion (4) extending lengthwise of the bumper beam, a compressable energy absorbing foam material (3) extending lengthwise of the bumper beam, and a bumper fascia (1) covering the foam material. The material has a first portion received in the depressed portion and a second portion protruded forwardly from the front face of the bumper beam such that the second portion is compressed in the depressed portion upon receipt of a collision impact.
Abstract:
An in-mold foam molding equipment, includes at least a movable partition member (1) for dividing a molding space (13) formed by a pair of molds into divided spaces, wherein the partition member is composed of a plurality of divisional partition members (2), wherein each of the divisional partition members individually has a retreat positioning protrusion (5) and a insert positioning protrusion (4), and the divisional partition members are installed in a slider (3), wherein the slider is configured to move between the retreat positioning protrusions (5) and the insert positioning protrusions (4), and the divisional partition members (2) are configured to be movable in cooperation with the motion of the slider moving by contacting with the retreat positioning protrusions (5) or the insert positioning protrusions (4), so that the divisional partition members (2) divide the molding space into divided spaces, and therefore an integral molded article suppressed in occurrence of large protrusions and deep holes can be manufactured.
Abstract:
Perlas celulares y expandidas de una resina de poliéster alifática reticulada que tiene una fracción gel de al menos un 5% en peso. las perlas expandidas se pueden obtener por reticulación de perlas de una resina de poliéster alifática no reticulada con un agente de reticulación que incluye un peróxido orgánico para obtener perlas de una resina reticulada que tienen una fracción gel de al menos 5% en peso, y después expandir las perlas de resina reticulada. Puede obtenerse un artículo biodegradable celular por espumado térmico de las perlas de resina de poliéster alifática, reticulada y expandida en un molde.
Abstract:
Disclosed herein is a method of producing foamed particles of a polyolefin resin, which are prevented from fusion-bonding among the particles upon their production, and exhibit excellent moldability without impeding fusion bonding property among the foamed particles upon their molding. The method includes dispersing the particles of the polyolefin resin along with a finely particulate silicate mineral as a dispersing agent and at least carbon dioxide as a foaming agent in a dispersion medium in a closed vessel, heating the dispersion to impregnate the resin particles with the foaming agent, and then releasing the resin particles and dispersion medium into an atmosphere of a pressure lower than the internal pressure of the vessel, thereby expanding the resin particles.