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Ovens for thermal bonding of recycled felt force hot
air through the felt, in order to achieve the required melting of the fibers.
Felt is prepared by a mechanical card + cross lapper,
or by the air lay system. Then it is
possible to pass through a needle loom to get better interlocking, or to
enter directly into the oven. Inside the oven, felt is carried out by 2 steel
belts that are used to keep the felt compressed during the thermal bonding,
in order to reduce shrinkage and to set the right thickness. Innovative air trough ovens, equipped with adjustable double belt.
These oven are specially designed to work with any
type of fibers, new or recycled. Special air ventilation system, fully
adjustable, allow the production of soft and thick product with high
resilience (for insulation, automotive or similar), or thin and rigid felt
(for mattresses or under carped) . Air flow is
oriented from top and from bottom and trough the web. Upper belt is used to
calibrate the product, adjusting the final thickness of the product from the
control board. Felt could be in blend with PP or with Low melt
point polyester. With PP felt come out very hard and stiff, while adding low
melting point polyester, it could be get a soft product with adjustable
thickness. |
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Ovens are made in modular sections of 3.3 mt. Each section it is equipped with 2 fans and 1 gas
burner. An essential part of these ovens
is the air ventilation system. Each section composes of 1 suction group under
the felt , 1 air blower from top to bottom and 1
from bottom to top. Air flow rates are adjustable via stepless
converster. When the felt is narrower than max. width , special adjustable flaps (driven, upon request,
from the control board) prevent the air passing out of the felt, thus
avoiding loss in efficiency. Production : As example, one 3 section Oven
is able to produce 1,200 Kg/hr, with average weight of 1,000 grm/sqm. Thick insulating panels provide optimum efficiency.
The air circuit is equipped with an extraction fan inside the oven as well as
at the entry and exit side, in order to avoid any smoke being emitted from
the oven. For hard felt production ,
after the oven a cooled Calender is installed, in
order to compact the fibers and make a rigit
product. After calendering, there
is one felt
cooling unit, by air flow trough. |
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OVEN FOR SHODDY
FELT (MATT. PADS +
UNDER CARPET) 2,6 m WIDE, 3-SECTIONS = 1.200 Kg\h
Featuring : Fully adjustable air flows via
frequency converters, allowing flexibility and accurate air penetration from
top and bottom of the product - Electronically controlled double conveyor
system with electronic gap adjustment for fibre
bat control used in the manufacture of both high loft and standard hard
felts - Easy clean filters are accessible from the outside and can be
changed without disturbing production - Electronic calendar roll
adjustment - Built in
extraction hoods for smokeless
operation OVEN FOR
SHODDY FELT (MATTRESSEES PADS) 3,5 m WIDE, 16.6 m LONG = 3.500 Kg\h
OVEN FOR
NATURAL FIBERS, BLENDED WITH LOW MELT
COMPLETE LINE
FOR SHODDY-PADS PRODUCTION, INCLUDING OVEN, CALENDER, COOLER AND CUTTER
OVEN FOR PHENOLIC FELT (AUTOMOTIVE) 2,6 m WIDE, 4-SECTIONS
Entry of the oven, with 2 heavy steel belts. Belts keep the felt under pressure during the process. Upon
request, belts distance could be adjusted from control panel. Exit of the oven, with calibrating calender
and felt cooler. Rolls are water cooled to avoid fibers adhering to the
rolls. Rolls gap is electrically adjustable, form the control panel. Suction group, placed under the belts Air is sucked under the felt, warmed by the burner and re-circulated from top and bottom.
Web at oven inlet End
products
10 mt long oven, placed out of line
with the Carding Machine. This solution
allows the Oven to be operated for 1 shift and the Card and Needle Loom
for 2 shifts. Air fan motors are placed out of the oven, with indirect
transmission .