vulcanization lines
PVO and NIR pre-vulcanization ovens
Pre-vulcanization systems are suitable for curing the outer surface of the profile to stabilize its geometry before coming into contact with the vulcanization oven conveyor belt.
The pre-vulcanization temperature inside the oven reaches about 600°C in the PVO system and 950°C in the NIR system.
Applications
Automotive & Transports
Door profiles with/without metal carrier, glass profiles, wipers profiles, radiator hoses, turbo-charge hoses, brake hoses, gasoline hoses, hydraulic steering hoses, air-conditioning hoses
Building & Construction
Mono or coextrusion profile with solid and sponge rubber, pre-shaped for moulding, sealings for pipes and manholes for sewer constructions
Industrial Products
Low pressure spiralled hoses, high pressure braided hoses, hydraulic hoses, hoses on rigid or flexible mandrel, off-shore hoses, oil hoses
Aerospace
Simple profiles, reinforced profiles, insufflated air profiles, reinforced silicon hoses
Cables & Electrical Components
Silicone and rubber covering for cables from 0,25 to 400 mm2, coextruded cables with multiple layers, fire resistant cables, cables protection for electrical junction with silicone sleeves (high voltage deepsea), silicone insulators foe medium and high voltage
Food
Simple and braided silicon hoses
High-speed hot air ovens
The principle of operation of the system developed and implemented by Colmec is based on the circulation of forced hot air at high speed inside two concentric chambers. The external chamber, where the hot air circulates at low speed, is called the preheating tunnel because the air in this area is preheated. The internal chamber, where the hot air circulates at high speed, is called the vulcanization tunnel, here the profile vulcanization takes place. The air temperature and the air speed are adjustable.
Applications
Automotive & Transports
Door profiles with/without metal carrier, glass profiles, wipers profiles, radiator hoses, turbo-charge hoses, brake hoses, gasoline hoses, hydraulic steering hoses, air-conditioning hoses
Building & Construction
Mono or coextrusion profile with solid and sponge rubber, pre-shaped for moulding, sealings for pipes and manholes for sewer constructions
Industrial Products
Low pressure spiralled hoses, high pressure braided hoses, hydraulic hoses, hoses on rigid or flexible mandrel, off-shore hoses, oil hoses
Aerospace
Simple profiles, reinforced profiles, insufflated air profiles, reinforced silicon hoses
Cables & Electrical Components
Silicone and rubber covering for cables from 0,25 to 400 mm2, coextruded cables with multiple layers, fire resistant cables, cables protection for electrical junction with silicone sleeves (high voltage deepsea), silicone insulators foe medium and high voltage
Food
Simple and braided silicon hoses
- For sulfur based compounds
- Length of modules that make up the 4, 6 or 8 meter long oven
- Adjustable air temperatures up to 400 °C
- Adjustable air speed
- Automatic tensioning system for the oven conveyor belts to compensate for thermal elongation
- Tunnel accessibility for internal cleaning by opening the side doors
- Great flexibility of use
- Very high efficiency and reduced energy consumption
- Very high reliability and low maintenance
- Simple adjustment for sponge rubber
Traditional Molten Salt Ovens
- sprinkling salt to pre-cure the external surface of the profile and block its geometry
-
salt immersion by motorized rollers or belts to complet the curing of the profile.
Applications
Automotive & Transports
Door profiles with/without metal carrier, glass profiles, wipers profiles, radiator hoses, turbo-charge hoses, brake hoses, gasoline hoses, hydraulic steering hoses, air-conditioning hoses
Building & Construction
Mono or coextrusion profile with solid and sponge rubber, pre-shaped for moulding, sealings for pipes and manholes for sewer constructions
Industrial Products
Low pressure spiralled hoses, high pressure braided hoses, hydraulic hoses, hoses on rigid or flexible mandrel, off-shore hoses, oil hoses
Aerospace
Simple profiles, reinforced profiles, insufflated air profiles, reinforced silicon hoses
Cables & Electrical Components
Silicone and rubber covering for cables from 0,25 to 400 mm2, coextruded cables with multiple layers, fire resistant cables, cables protection for electrical junction with silicone sleeves (high voltage deepsea), silicone insulators foe medium and high voltage
Food
Simple and braided silicon hoses
- For sulfur-based compounds and peroxides
- The oven with a length ranging from 12 to 36 meters, consists of 2 zones: sprinkling and immersion by roller or motorized belts
- Opening by pneumatic doors
- The operating temperature of salt is adjustable up to 280°C
- Pre-cleaning station. Module where the first mechanical cleaning of molten salt from the surface of the rubber profile takes place
- Washing station to remove salt from the profiles
- Salt recovery system to remove the salt from the washing water by evaporization
- High productivity
- Suitable for profiles and hose that require vulcanization in the absence of oxygen
- Remarkable flexibility in the production process thanks to the wide range of salt bath temperatures (180°C – 280°C)
- Reduced line length due to the enhanced heat transfer
Hybrid ovens with molten salt and high-speed hot air
This new patented vulcanization system simultaneously exploits the process qualities of molten salt and high-speed hot air. This system eliminates the use of rollers and / or conveyor belts to keep the profile immersed under the surface of the molten salt. The profile floats on the molten salt and during vulcanization the profile is hit by a flow of hot air thereby vulcanizing freely without the confinement of a conveyor belt and / or rollers that can cause marks and deformations on the profile.
Applications
Automotive & Transports
Door profiles with/without metal carrier, glass profiles, wipers profiles, radiator hoses, turbo-charge hoses, brake hoses, gasoline hoses, hydraulic steering hoses, air-conditioning hoses
Building & Construction
Mono or coextrusion profile with solid and sponge rubber, pre-shaped for moulding, sealings for pipes and manholes for sewer constructions
Industrial Products
Low pressure spiralled hoses, high pressure braided hoses, hydraulic hoses, hoses on rigid or flexible mandrel, off-shore hoses, oil hoses
Aerospace
Simple profiles, reinforced profiles, insufflated air profiles, reinforced silicon hoses
Cables & Electrical Components
Silicone and rubber covering for cables from 0,25 to 400 mm2, coextruded cables with multiple layers, fire resistant cables, cables protection for electrical junction with silicone sleeves (high voltage deepsea), silicone insulators foe medium and high voltage
Food
Simple and braided silicon hoses
- Suitable for complex geometry profiles with sulfur and peroxide-based compounds
- Consists of a bed of molten salt on which the profile floats, the part not in contact with salt is instead hit by a flow of hot air at high temperature and speed
- The tunnel can be divided into several sections ranging in length from 6 to 30 meters
- Opening by pneumatic doors
- The speed and temperature of the hot air are adjustable according to the type of profile to be vulcanized as well as the operating temperature of the salt
- Washing station to remove salt from the profiles
- Salt recovery system to remove the salt from the washing water by evaporization
- This innovative process allows the vulcanization of profiles and/or rubber hose without deforming its geometry
- Suitable for profiles/hose that require vulcanization in the absence of oxygen
- Reduced line length due to the enhanced heat transfer
