摘要:
A molded product includes a matrix formed of a polymer material and a plurality of capsules dispersed in the matrix. An unevenness is formed on a surface due to expansion of the capsules. Some of the capsules have expanded without bursting and include an exposed outer shell portion that protrudes from a surface, and/or some of the capsules have burst and include an outer shell protruding portion that protrudes outward from the surface. Finish processing is performed, which eliminates the outer shell protruding portions and/or the exposed outer shell portions from the surface. This results in a molded product in which a color difference due to frequency of contacting an object, etc. is not easily generated.
摘要:
A molded product includes a matrix formed of a polymer material and a plurality of capsules dispersed in the matrix. An unevenness is formed on a surface due to expansion of the capsules. Some of the capsules have expanded without bursting and include an exposed outer shell portion that protrudes from a surface, and/or some of the capsules have burst and include an outer shell protruding portion that protrudes outward from the surface. Finish processing is performed, which eliminates the outer shell protruding portions and/or the exposed outer shell portions from the surface. This results in a molded product in which a color difference due to frequency of contacting an object, etc. is not easily generated
摘要:
A long ornament member W1 has an attaching portion 1 and an ornamental portion 3 constituted by vulcanized rubber integrally formed on a surface of the attaching portion 1. The ornamental portion 3 has a surface roughened by plural microcapsules thermally expanded therein, plural concave portions 6a outwardly opened in the microcapsules 6 that burst on or in the vicinity of the ornamental portion 3, and plural projection portions 6b constituted by outwardly swelling the microcapsules 6 expanded in the vicinity of the surface. At least one of plural convex ridges and plural concave grooves are formed on the surface of the ornamental portion 3, the convex ridges extending along at least one of a longitudinal direction and a lateral direction that crosses the longitudinal direction, the concave grooves extending along at least one of the longitudinal direction and the lateral direction.
摘要:
An extrusion die includes a die and a core, and the core includes a movable core portion that is movable along an extrusion direction and a fixed core portion. The movable core portion has non-similar cross-sectional shapes at front and rear two positions along the extrusion direction. A first portion of the elongated weather strip is molded in a state where the movable core portion is disposed at an advance position, and a second portion of the elongated weather strip is molded in a state where the movable core portion is disposed at a retreat position. During the molding of the second portion, a supply amount per unit time of a material for the sealing portion to a molding space for the hollow sealing portion that is secured between the core and the die is set to be larger than that during the molding of the first portion.
摘要:
A long ornament member W1 has an attaching portion 1 and an ornamental portion 3 constituted by vulcanized rubber integrally formed on a surface of the attaching portion 1. The ornamental portion 3 has a surface roughened by plural microcapsules thermally expanded therein, plural concave portions 6a outwardly opened in the microcapsules 6 that burst on or in the vicinity of the ornamental portion 3, and plural projection portions 6b constituted by outwardly swelling the microcapsules 6 expanded in the vicinity of the surface. At least one of plural convex ridges and plural concave grooves are formed on the surface of the ornamental portion 3, the convex ridges extending along at least one of a longitudinal direction and a lateral direction that crosses the longitudinal direction, the concave grooves extending along at least one of the longitudinal direction and the lateral direction.
摘要:
A method of manufacturing an elongated core which is buried in an elongated trim. The method includes, forming slits to a metal plate, which extend in a second direction, at predetermined intervals in a first direction so as to form core pieces between the adjacent slits; and rolling a portion of the metal plate in which the slits are not formed in the second direction to form a rolled portion extending in the first direction, and expanding the slits in the first direction to form spaces, thereby preparing a primary core in which the core pieces and the spaces are alternately provided in the first direction. Additionally, the method includes, supplying the primary core to between a pair of deformed portion forming rollers engaged with each other such that reinforcing defaulted portions extending in the second direction are repetitively formed in the first direction.