TRAY SEALERSTRAY SEALERS

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45TRAY SEALERS

SLB Tray Sealer

The keywords for the SLB Tray sealingmachines are:

Speed and Simplicity

The SLB machine uses an innovativegas flush process to produce aModified Atmosphere Packaging(MAP) in a rapid period of time. Thisprocess allows the SLB machine tooperate without the use of a vacuumpump. Not using a vacuum pumpgives this machine several big advan-tages over traditional equipment:

• Faster production speed• No damage to delicate products• Works well with liquids and products with high water content

• Easy to operate and troubleshoot• Low maintenance

The technique which the SLB uses is aflushing of gas combined with a con-trolled turbulence inside the tray. Thisfast and simple system results in ashort cycle time and increased produc-tion speed. The entire gas flushprocess is also extremely efficient,resulting in gas consumption that isnot much more than with conven -tional machines. Under ideal circum-stances a residual oxygen level of lessthan 0.1% can be obtained in thecontainer. The use of high percentagesof oxygen is also possible, making thismachine ideal for packing productssuch as red meat.

The fact that the SLB does not pull avacuum prior to gas flushing meansthat there is no damage to the pro -duct in the container during packag-ing. Machines that use a vacuumpump tend to impose a large pressure

diffe rence on the products inside thetray, resulting in the possibility ofinternal product breakage or loss ofwater. The SLB machine minimizes thisproblem and is ideal for the packagingof delicate products like soft fruit, vegetables, raw fish, or tender meat.

The SLB machine is constructed ofstrong and durable materials for thefood environment. The machine canbe used for small batch packaging orfor fully automatic applications.Tooling changeover can be done in afew minutes, making the SLB perfectfor applications that require differenttray sizes.

Please contact Audion or your localdistributor for more informationregarding the packaging of your product and the possibilities comple-mentary equipment.

What makes our machine special?

SLB 1007The SLB 1007 is a manual tray sealer for modified atmosphere packa -ging (MAP) of cups and trays. The SLB 1007 offers the best combinationof price and performance in the industry to pack and preserve foodfreshness using gas flush.

Technical specifications SLB 1007

Capacity (max with seal only) 8 cycles/min

Capacity (max with MAP) 6 cycles/min

Max. tray size (LxWxH) 360 x 300 x 140 mm

Max. film width 335 mm

Printed film capability Standard

Air consumption 100L/min (at 7 bar)

Voltage/Phase/Frequency 230 V – 1 Ph – 50/60 Hz

Power consumption 2000 W

Machine Size (LxWxH) 1200 x 1100 x 1480 mm

SLB 1007

SLB 1007

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46 TRAY SEALERS

Audion Tray Vacuum SealerATS 460 is Audion’s newly developedvacuum MAP tray sealer. Differentfrom the SLB series, ATS 460 vacuumsthe tray completely before it insertsgas. The machine is built in stainlesssteel for use in hygienic environment.

By pushing in the drawer, which is infact the mould loaded with trays, thecycle is started. The machine starts thefollowing cycle: vacuuming, gas flush-ing, sealing and cutting processesaccording to the selected program.Vacuum and gas flush parameters arecontrolled by a pressure sensor, whilethe sealing is controlled by a timer. Itis possible to program the machine toskip vacuum and/or gas flush depen -ding on the purpose of packaging.When a cycle is completed, the drawer

is pulled out and the trays are takenout manually.

The teflon coated sealing mould isdesigned to the shape of the tray. Bychanging the mould, different types oftrays can be sealed with one machine.Depending on the type of the tray, itis possible to place several trays in onemould.

ATS 460 is specially developed withquick-easy-safe mould exchange con-cept. Pneumatic system supports themould exchange work by holding themould while it is being attached to /detached from the machine. Themachine is also delivered with specialmould holder with which a hot mouldcan be safely carried by hand andstored easily.

Options:• Extra sealing mould (incl. mould

holder)• Oxygen pump (for using gas mix-

ture containing more than 20%oxygen, and for use of gas mixerconnected to 100% oxygen gasbottle)

• 220V, 3 phases, 60Hz• 380V, 3 phases, 60Hz

ATS 460

Technical specifications ATS 460

Capacity 2 cycles / minute

Max. tray size (lxwxd) 410 x 265 x 135 mm

Max. film width 460 mm

Max. film reel diameter 270 mm

Min. film reel core diameter 90 mm

Seal temperature 120 – 170ºC

Final vacuum 99,98 % (2 mbar)

Machine size (lxwxh) 910 x 610 x 1500 mm

(1000 x 750 x 1725 mm when packed)

Weight 245 kg (285 kg when packed)

Voltage/Phase/Frequency 400 V, 3 phases, 50/60 Hz

Power consumption 4000 watt

External compressed air connection G ¼” (internal)

External pressure (min. – max.) 6 - 8 bar

Air consumption 2 liters / cycle

Gas connection (where applicable) G ¼” (internal)

Max. gas pressure (where applicable) 4 bar

Standard ambient temperature 5 – 40 ºC

Pump capacity 21 m3/h (Busch)

ATS 460

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47TRAY SEALERS

Most commonly used trays

Most commonly used trays

Top seal filmVirtually every product needs a specific film, according to the exactneeds and wishes of the client

• Do you want a peelable film or afully sealed container?

• Do you need a high or a low barrier film to control the perme-ability of the gasses?

• Do you need a breathable film forcontrolled atmosphere packaging?

• Is the product to be stored in thefreezer or in a refrigerator?

• What kind of a material is the traymade of?

Nitrogen (N2)Nitrogen is mainly used to “displaceand replace oxygen” in the packagebefore it is closed. It prevents oxida-tion of pigments, flavourings and/orfatty acids. Nitrogen is inert, odour-less, and has low solubility in waterand fats. It has no direct antibacterialor fungicidal properties.

Carbon dioxide (CO2)Carbon dioxide is soluble in water andfat and is an antibacterial and fungi-cidal agent. CO2 and water togetherform a weak acid (H2CO3). This acidhas a bactericidal and anti-microbialeffect, it slows down and reduces theproliferation of aerobic bacteria andmolds, especially in the absence ofoxygen. It is effective at concentra-tions above 20% in atmosphere. It hasno stimulating effect on pathogenicorganisms. Because CO2 is very solu-ble in water and fats it may promotedevelopment of a slightly acidic tasteif CO2 use is not properly controlled. Itcan also cause the film on packaged

products to collapse. This may beeither a drawback or a targeted effect.

Oxygen (O2)In general, oxygen is an undesirableelement. In some applications, how -ever, it is used as a constituent in agaseous mixture.It is used in particular for maintainingthe red colour of meat. It also prevents the proliferation of strictlyanaerobic organisms (e.g. for freshfish).

Argon (Ar)Argon is a chemically inert, odourlessand tasteless gas. It is a ‘heavier’ gasthan nitrogen, and is used to protectsensitive products such as wine.However, it is twice as soluble asnitrogen. Hence it can be used in acontrolled atmosphere to replacenitrogen in most applications. Its solubility and certain molecular charac-teristics give it special properties foruse with vegetables. Under certainconditions, it slows down metabolic

reactions and significantly reducesbreathing.

Advantages of packing under modifiedatmosphere with our machines:• The product retains its form and

texture.• The product looks better.• The product retains its vitamin

content, taste and fat content.• The natural colour of the product

is preserved.• The product will not lose excessive

liquid content (as with a vacuumpackaging).

• This method does not requirelabelling declaration (no additives).

• The need to use preserving agentsis reduced if not eliminated.

• Lower labour costs due to longershelf life (no extra labour inevening/ weekend).

• Less problems during the logisticchain.

Microwave proof Grease resistance Cold resistance O2 barrier H2O barrier CO2 barrier

APET - ++ ++ + +/- +

CPET + ++ ++ + +/- +

HDPE +/- ++ ++ - + -

PP Homo + ++ - - + -

PP Copo + ++ + - + -

PS - + + — - -

Aluminium Ovenable ++ ++ ++ ++ ++

— = Poor - = Moderate +/- = Reasonable + = Good ++ = Very good