CLASSIFICATION UNIT DESCRIPTION
Sector:
Sub-sector:
Classification Unit No.
713016
PLEASE NOTE:
Manufacturing
Petroleum, Coal, Rubber, Plastic, and Chemical Products
Classification: Industrial Rubber Belt Manufacture, Installation, Service, or
Unit
Repair
Base Rate
History
2010
2009
2008
$5.44
$5.04
$4.20
This document provides information about business activities covered by this classification.
Items listed are EXAMPLES only and do not apply to every employer.
_________________________________________________________________________________
GOODS
The following are examples of the types of goods produced by employers in this classification
unit:
Conveyor belts
Mechanical laced belts
INSTALL, SERVICE
OR REPAIR
Industrial belts
The following are examples of the types of items installed, serviced, or repaired by employers in
this classification unit:
Rubber belts
EQUIPMENT
The following are examples of the types of equipment used by employers in this classification
unit:
Banbury mixer
Calender
Extruder
Hand tools
Industrial roller
Laminating machine
Moulder
Shearer
Slitter
Vacuum pump
Vulcanizing equipment
PROCESSES
Buffer
Deflasher machine
Grinder
Hydraulic steam press
Injection mould press
Lathe
Rubber mill
Slater
Tire builder
Vulcanizer
The following are examples of the major steps used by employers in this classification unit:
Curing Oven: The final step for most processes which dries and sets the rubber.
Laminating Process: Feed bales of natural and synthetic rubber with chemicals such as sulfur and
carbon into a Banbury mixer and produce a "productive" rubber compound used to manufacture various
components of a bias ply tire. Use laminating machine coating sheets of rubber with fabric to produce
ply stock that is fed through a bias cutter to form individual plies; use extruder to produce tread and
sidewall stock. Coat wire with rubber as a bead. Assemble tire components by a "tire builder" in a
manual process.
Print Date: 2009/09/28
Page 1 of 2
As at Date: 2010/01/01
Status: Active
CLASSIFICATION UNIT DESCRIPTION
Sector:
Sub-sector:
Classification Unit No.
713016
PROCESSES
Manufacturing
Petroleum, Coal, Rubber, Plastic, and Chemical Products
Classification: Industrial Rubber Belt Manufacture, Installation, Service, or
Unit
Repair
Base Rate
History
2010
2009
2008
$5.44
$5.04
$4.20
The following are examples of the major steps used by employers in this classification unit:
Moulding Process 1: Several pieces of machinery are used in the moulding process: a shearer cuts
bulk rubber into strips or chunks; an extruder mixes and heats pieces of rubber to a high temperature,
then forces the mixture out through dies, forming it into "ropes"; a rubber mill - strips of raw rubber and
dry chemicals are fed into the rollers where they are mashed and pressed, forming it into different
grades or densities. Rubber emerges from the mill in flat, pliable strips, ready for further treatments. A
calendar passes rubber through more rollers which work it to a smooth, even, glossy finish.
Moulding Process 2: Hydraulic Steam Press: There are several types of moulding which involve
placing strips of rubber after it has been filled and rolled into cast iron moulds. Moulds are inserted into
a press where heat and pressure are applied until the rubber is moulded to the desired shape, then
removed and cooled. Injection Mould Press: Rubber is shot into cavity of moulds, and a press heats it
to an almost liquid form, then it becomes stable; vacuum pump sucks air from moulds to form the
product. Deflasher Machine: Moulded items are placed in a basket; nylon pellets are added to
machine; as the machine spins, the pellets beat flashing from the moulded pieces; flashing is
sometimes trimmed by hand with an exacto knife or smoothed in grinders.
CLASSIFICATION
SPECIFICS
The following information is directly relevant to employers in this classification unit:
This classification unit also includes employers that use heavy machinery to cut used tires into large
pieces which are formed into bumpers for boats, loading docks, and similar items.
Vulcanization, which improves strength, resiliency, and odour of rubber by combining it with sulfur or
other additives in the presence of heat and pressure, occurs in various stages of the manufacturing
processes.
A rubber mill has two heavy rollers (each about one foot in diameter) that spin towards each other;
friction of the spinning rollers causes heat.
A deflasher machine resembles a clothes dryer with a basket inside and is used to remove flashing
(excess rubber that has squeezed out of the mould during forming).
EXCLUSIONS
Employers in this classification unit may also occasionally engage in other business activities.
However, those employers with significant presence in the following industry or industries may
be more appropriately assigned another classification:
1) conveyor system manufacture (see CU 712016);
2) auto parts manufacture (see CU 712011);
3) rubber recycling (see CU 713024); or
4) automobile tire manufacture (see CU 713034).
Print Date: 2009/09/28
Page 2 of 2
As at Date: 2010/01/01
Status: Active