Источник: http://www.upakovano.ru 2005 г.
Packaging in vacuum eliminates the harmful effect on them
oxygen and other components of air. This, of course, the oxidation
fat-containing and the ability of the microflora. Vakuummirovanie
increases the shelf wide range of food products
subject to spoilage, food packaging gives an aesthetic appearance
look, protects against loss of freshness and flavor. Vacuum is applied
Packaging not only food but also medical, cosmetic
and other products.
The process of vacuum packaging is the product in the tray or
package is placed in an open chamber in which a vacuum is not below
5.0 - 7.5 Torr, after which the packaging is sealed by welding, and after
recovery in the chamber air pressure is removed from the apparatus.
In most modern vacuum-packaging machines
by filling the chamber and protective packaging after vakuummirovaniya
an inert gas.
On a design vacuum packing machines can be
suitable for packaging products in the pre-made trays
or polymer bags. Such devices in the Russian market are well represented
Dutch companies Henkovac, Henkelman, a Japanese company Mitsubarak
and many other foreign and domestic enterprises.
Devices of this type are mounted in a metal
building a vacuum chamber connected to a vacuum pump conduit and
with a modified gas tank and close the hinged
cover the welding frame. Laid in the nest chamber trays with product
covered by a film, stretch manually placed on the
side or rear wall of the unit coil so that the film is completely
covered trays. The digital control panel, equipped with a programmable
microprocessor, set all the parameters of the process vakuummirovaniya,
gas filling, welding and others. Then the lid is closed apparatus
and vacuum packaging process is carried out automatically.
Apparatus for vacuum packing food in plastic bags differ
considered by the lack of slots for trays and welding the frame, rather than
which incorporates two welding lines. The upper line is fixed to
chamber lid and the bottom is set in the camera with the possibility of vertical
movement. PACKING When the camera is placed in a package
product so that its edges were sealed at the bottom of the welding
line. The chamber is then closed with a lid, it creates
vacuum and, if necessary together with a package filled with a modified
gas mixture. The bottom line is lifted welding, presses the edge
package to the top of the line and made Electro-welding. After
welding seam automatically by the program falls
bottom line, is lapping the air and opens
In the single-chamber vacuum machines, all operations are performed each cycle
sequentially after the previous one. Because of the impossibility of combining
performance of single-chamber devices operation is small and
leaves 2-3 cycles per minute. These devices are well suited for small
companies, department stores and supermarkets, and meat packing
fish products, convenience foods, salads and many other products.
More productive two-chamber vacuum packaging machines
with one fixed in 4 concurrent hinged lid. Two close
The same camera can be placed alternately close this
Cover and seal. Both cameras are connected to a common vacuum
the system unit. Due to the combination of automatic
vakuummirovaniya and packaging in the same cell in the blanks and tabs
second chamber is achieved by a substantial increase in productivity
two-chamber apparatus as compared to single chamber.
For large industrial enterprises and wholesale trade centers more than
appropriate and productive can be thread tape
vakuumupakovochnye machines, providing capacity of up to 12 cycles
per minute. The operator places the product on the tray with a belt conveyor,
moves the workpiece in a vacuum chamber. During
automatically perform all subsequent operations, vacuum packaging
the operator is preparing the next workpiece, so the process is
Apparatus for packaging in vacuum and modified atmosphere significantly
different sizes of vacuum chambers and thus productivity
vacuum pumps. If the amount of desktop devices
vacuum chamber can bytmene 0.008 m3 and pump up
4 m3, the powerful interior apparatus may have a volume of the chamber
0.2 m3 and pump 300 m3 / h.
New generation of machines for packing in a vacuum and modified
the atmosphere with powerful microprocessors with software series
additional functions, such as an additional vacuum, soft
crimp, multitsikl, double seam welding, cutting the seam, low vacuum
for incomplete vakuummirovaniya. An additional function of a vacuum or
"Vacuum plus" makes it possible to completely remove excess air from the package.
Multitsikl in addition to a single vakuummirovaniyu can
be repeated several times, which provides an extremely low
oxygen in the package. With a soft crimp special aeration system in the
the camera is fed air by gently pressing out the package with the product, without damaging
product and eliminating the wrinkles on the package.
Of great interest is the so-called vacuum packaging Skin
(Second skin), a variety of piece goods. For the manufacture of
Skin-packing used specially adapted single-chamber
a vacuum apparatus.
The vacuum chamber of the apparatus is closed above the perforated platform. On
this platform is placed a sheet of porous cardboard stacked on it
packaged items covered unwind from the roll of the polymer
film and with it pressed tightly on the perimeter of the chamber. Then
the heating of the film and vakuummirovanie camera. Through
the perforated area and porous cardboard under the film creates a vacuum
film under the influence of atmospheric pressure envelopes packed
subjects by repeating their shape and tightly adhering to the cardboard backing. After
cool cardboard backing with objects extracted from the chamber
and cut into individual packages are stacked on the number of her articles.