摘要:
A mold for manufacturing hemispherical sections for a golf ball includes a first mold plate including a first cavity, a second mold plate including a second cavity, and a midplate. The midplate includes an indentation on a first side of the midplate and a projection on a second side of the midplate. The indentation of the midplate corresponds to the first cavity of the first mold plate The projection of the midplate corresponds to the second cavity of the second mold plate.
摘要:
A method of forming a golf ball includes forming a pair of thermoplastic hemispherical shells from an elastomer compound including an elastomer and first, second, and third free radical initiators, with the elastomer being pre-crosslinked to a first crosslinking density, then positioning a spherical component between the hemispherical shells and compression molding and curing the hemispherical shells to a second crosslinking density around the spherical component. The method uses three different crosslinking temperatures.
摘要:
A cured elastomer golf ball component is made by heating an elastomer compound containing an ethylenically unsaturated elastomer, an ethylenically unsaturated monomer, and first and second free radical initiators to a first crosslinking temperature (T 1 ) in a compression mold and partially crosslinking the elastomer, then heating to a second crosslinking temperature (T 2 ) and curing the elastomer component of the golf ball. Either: (i) the first initiator has a half-life of about 0.2-5 minutes at T 1 , the second initiator has a half-life of about 0.2-5 minutes at T 2 , and T 2 is higher T 1 by at least about 30°C; or (ii) the second initiator's one-minute half-life temperature is at least about 30°C higher than the first initiator's one-minute half-life temperature, T 1 is within about 20°C of the first initiator's one-minute half-life temperature, and T 2 is within about 20°C of the second initiator's one-minute half-life temperature.
摘要:
A method of forming a golf ball includes forming a core using a 3D printer, and molding a cover in a surrounding position over the core through at least one of compression molding and injection molding. The core may be formed by printing a first core portion, printing a second core portion, and fusing the first core portion with the second core portion to form the core. Each of the first and second core portions may respectively include a plurality of concentric shells that are sequentially constructed.
摘要:
A method of forming a golf ball includes forming a pair of thermoplastic hemispherical shells from an elastomer compound including an elastomer and first, second, and third free radical initiators, with the elastomer being pre-crosslinked to a first crosslinking density, then positioning a spherical component between the hemispherical shells and compression molding and curing the hemispherical shells to a second crosslinking density around the spherical component. The method uses three different crosslinking temperatures.
摘要:
A method and system for compression molding a dual core of a golf ball is disclosed. The method may include a first cycle in which a top mold plate, a middle mold plate, and a bottom mold plate may be used to compression mold concave shells. During the first cycle, the top mold plate and the bottom mold plate may be held at a first temperature T1 and the middle mold plate may be held at a second temperature T2. During the first cycle, the mold plates may be pressed together with a first pressure P1 for a first time t1. A second cycle may include compression molding the concave shells about a solid core. During the second cycle, the top mold plate and the bottom mold plate may be held at the first temperature T1 and pressed together with a second pressure P2 for a second time t2.
摘要:
A thermoset composite material that my used in the fabrication of structural components including railroad ties comprise a substantially homogeneous blend of an amount of vulcanized rubber particles including a predetermined ratio of different particles sizes, and a thermoset elastomeric binding agent added to the vulcanized rubber particles. The blend may comprise about 30% to about 97% by weight of the vulcanized rubber particles, and the blend is subjected to compression molding at a predetermined temperature and pressure for a resident time period forming the composite material. The ratio of different rubber particle sizes is selected so that the composite material has a desired density or is within a range of desired densities.
摘要:
According to the invention there is provided a method of producing a moulded article at least partially from rubber crumb, including the steps of : i) providing first and second complementary moulds (10, 12) each having face portions for forming respective generally opposed surfaces of said moulded article; ii) contacting at least one of the face portions with at least one material selected from the group of : a plastics particulate material and rubber crumb; iii) transmitting heat to the moulds thereby to cause the material to melt at least partially to form at least one layer or skin; iv) introducing a core material between the first and second complementary moulds in which, if the material contacting the face portion or portions in step ii) comprises rubber crumb then the core material optionally comprises rubber crumb, and if the material contacting the face portion or portions in step ii) does not comprise rubber crumb then the core material comprises rubber crumb; and v) bringing together the first and second complementary moulds to form the moulded article.
摘要:
A barrier (301) includes recycled rubber portions (101) and a binder (102) molded around a core infrastructure (401). The core infrastructure may itself include a filler material (404) in the form of recycled rubber in a containment body (401). The containment body may include baled recycled or other waste material. The barriers may be stacked or connected to form a barrier structure useful in environmental control and other applications. The method for making the barriers includes molding rubber portions and a binder around a core infrastructure.