Industry Code: 16901
This industry covers the manufacture of any type of vulcanized rubber product for industry including oilfield related products, conveyor belts and tires.
Operation Details:
The process of vulcanization involves the treatment of rubber with sulfur and heat resulting in a change in the shape or consistency of the rubber. The speed of vulcanization may be enhanced through the use of chemical accelerators.
Rubber is molded by heat and hydraulic pressure to make such items as rubber balls, oilfield cementing plugs, truck mud flaps etc. Products such as seal strips, tubing etc., may be extruded. Other products may be milled for belting, sheeting etc., by mixing carbon black, oils, sulfur, waxes, raw rubber and neoprene, then crushing the mixture together with rollers. Products may also be hand built such as hoses by wrapping layers of rubber, fabric, wire and more rubber around a core or mandril by hand, then heating to melt the ingredients together. Employers in this industry may also repair or splice belting such as conveyor belts by vulcanizing, or re-cover conveyor belting.
The tire manufacturing process begins by feeding bales of natural and synthetic rubber with chemicals such as sulfur and carbon black into a Banbury Mixer. This produces a "productive " rubber compound used to manufacture the various components of a bias ply tire. A laminating machine coats sheets of rubber with fabric to produce ply stock which is then fed through a bias cutter to form individual plies. An extruder is used to produce tread and sidewall stock. Wire is rubber coated and used as a bead. To this point this is primarily an automated process with machine operators at the various stations. Tire components are then assembled by a "tire builder" in a manual process. The "green" tire is placed in a curing press which utilizes an inflatable bladder and steam to press the tire into a mold and form the tread. The tires undergo a final inspection and are shipped to distributors.
Underwriting Considerations:
Products referred to as foam rubber or foam plastic which are manufactured using petrochemicals and an expansion process are included in industry 37301, Mfg. of Plastic Products.
Premium Rate History:
Activities:
Tire Manufacturing
Rubber Products, Industrial - Mfg
Rate Group History:
The most recent change has been the 1996 consolidation of industries with similar manufacturing processes.
This industry covers the manufacture of any type of vulcanized rubber product for industry including oilfield related products, conveyor belts and tires.
Premium Rate History:
Activities:
Tire Manufacturing
Rubber Products, Industrial - Mfg
Operation Details:
The process of vulcanization involves the treatment of rubber with sulfur and heat resulting in a change in the shape or consistency of the rubber. The speed of vulcanization may be enhanced through the use of chemical accelerators.
Rubber is molded by heat and hydraulic pressure to make such items as rubber balls, oilfield cementing plugs, truck mud flaps etc. Products such as seal strips, tubing etc., may be extruded. Other products may be milled for belting, sheeting etc., by mixing carbon black, oils, sulfur, waxes, raw rubber and neoprene, then crushing the mixture together with rollers. Products may also be hand built such as hoses by wrapping layers of rubber, fabric, wire and more rubber around a core or mandril by hand, then heating to melt the ingredients together. Employers in this industry may also repair or splice belting such as conveyor belts by vulcanizing, or re-cover conveyor belting.
The tire manufacturing process begins by feeding bales of natural and synthetic rubber with chemicals such as sulfur and carbon black into a Banbury Mixer. This produces a "productive " rubber compound used to manufacture the various components of a bias ply tire. A laminating machine coats sheets of rubber with fabric to produce ply stock which is then fed through a bias cutter to form individual plies. An extruder is used to produce tread and sidewall stock. Wire is rubber coated and used as a bead. To this point this is primarily an automated process with machine operators at the various stations. Tire components are then assembled by a "tire builder" in a manual process. The "green" tire is placed in a curing press which utilizes an inflatable bladder and steam to press the tire into a mold and form the tread. The tires undergo a final inspection and are shipped to distributors.
Underwriting Considerations:
Products referred to as foam rubber or foam plastic which are manufactured using petrochemicals and an expansion process are included in industry 37301, Mfg. of Plastic Products.
Rate Group History:
The most recent change has been the 1996 consolidation of industries with similar manufacturing processes.