Steristar Steam-Air Retort – FDA Guide

Container Machinery has provided machinery for food processing for over 40 years.  The original company (Container Machinery Corporation) was founded in 1974 and manufactured the Truxton Steristar Steam-Air Retort.

Truxton Steristar Steam-Air Retorts
Truxton Steristar Steam-Air Retorts installed in a facility

FDA: Guide to Inspections of Low Acid Canned Food 39 | Steam-Air Retorts

Equipment and procedures for processing in steam-air retorts are not specifically covered in the lacf regulations. These systems are covered by 21CFR 113.40(j), Other Systems. “Other” systems are required to conform to the applicable requirements of the lacf regulations…

…At one time the Container Machinery Corp. built the Truxton Steristar in the U.S….

The steam-air retort uses a mixture of steam and air, which is added to create an over-pressure in the retort. The air over-pressure allows thermal processing of a wide variety of containers including: glass, metal cans, rigid plastic, and flexible pouches. Steam-air mixtures, although in a gaseous state similar to 100% steam, when used as a heating medium behave more like water…

…It is very important to maintain the correct steam-air ratio in this type of retort. The steam-air ratio should be the same as that used during studies to determine temperature distribution in the retort.

Steam-air retorts are normally operated at steam-air ratios ranging from 75% steam/25% air to 95% steam/5% air, depending upon the air over-pressure in the retort. The steam-air ratio is normally determined by the processing temperature and the type of package being processed.

The pressure in a steam-air retort must be maintained at the correct pressure to prevent container distortion and to maintain the correct steam-air ratio…

…The percent steam can be calculated using the following formula:

Steam pressure psia (pounds per sq. inch actual) = % steam

Total system pressure psia

Steam pressure psia is determined by determining the amount of steam pressure generated at a certain temperature [e.g. 240° F generates 10 psig (pounds per sq. inch gauge)] plus 14.7 psi (atmospheric pressure at sea level) equals 24.7 psia. The total system pressure is determined by taking the gauge reading and adding 14.7 psi. A steam air system having a total gauge pressure of 15 lbs operating at 240° F would have a 83% steam, 17% air mixture.

10 psig + 14.7 psi atmospheric = 24.7 = 83% steam

15 psig + 14.7 psi atmospheric    29.7

Click here for the complete article on FDA.gov

Container Machinery Exclusive Jungmichel Agent

As the exclusive Jungmichel Agent, Container Machinery sells Double Sheet Detectors for monitoring the automatic sheet destack and sheet feed on sheet working machines like body makers, welding- and printing machines, slitters, presses etc.

Container Machinery sells Double sheet detectors as the Jungmichel Agent

For over 40 years now, Jungmichel has specialized in design and production of electronic sensors and controllers mainly for the can making, canning and metal sheet working industry.  Our sensors and detectors are used by canmakers and canners around the world, and are the preferred choice of well known OEMs that produce machinery for the metal packaging industry.  They monitor the sheet destacking so that only one sheet is feed into the sheet working machine.

There are many different detector models available.  For different kinds of sheet materials, with singlesided contact sheet detectors or with double-sided non-contact sheet sensors.

Very economical, flexible, and user-friendly, Jungmichel double sheet detectors are available with various functions and outputs.  Some all-in-one double sheet sensors are “teach-in” programmable and don’t require an external amplifier.  Some detectors have convenient 0 – 10 V DC outputs.

Since 1977, Jungmichel double sheet sensors have been the preferred choice of leading canmaking machinery suppliers for use in their machines.  As the Jungmichel agent,  you can get original replacement sensors and/ or amplifiers quickly and inexpensively, with local customer service from us.

Please download our sensor catalogs for more information.  Special sensor solutions are may also be available.

CM-Double-Sheet-Sensors-2017

Container Machinery is the exclusive Jungmichel agent in the United States. Contact us for more information.

Automatic End Feeding System

Plastic or Paper Unwrapping Solution from Container Machinery

Automated End Feeding System from Container Machinery
Unwrap 5 bags/min of various diameters and feed up to two lines!
Plastic Foil Wrap Can Ends
Unwrap ends ranging from Ø52-155 mm and from 350-1200 mm long.

Unwrap up to 5 bags/minute with the Automatic End Feeding System.  Lids ranging from Ø52-155 mm are unwrapped from either paper or plastic sleeves up to 1200 mm long.

Single output and dual-output unwrappers available with storage of up to 165 sticks of each type.

Automated End Bagger – Wrapper

Plastic Lid Wrapping System from Container Machinery

Can End Wrapper - Bagger from Container Machinery
Pack ends of various diameters from up to 6 Lines simultaneously!
Stick of can ends wrapped in plastic
Stick of aerosol ends wrapped in perforated plastic

The alternative to paper baggers, the Automatic End Bagger / Wrapper quickly packages can ends of various diameters from up to 6 Lines. Lids ranging from Ø52-93 mm are wrapped in a plastic sleeve up to 800 mm long.

Contact us for more information!

360°Scan by INSENSIV from Container Machinery

360°Scan



The 360°Scan system detects decor, physical, and false color defects of beverage cans. With the 360°Scan system it is possible to inspect the OCR- or barcode as well as the decor. The system’s cameras are arranged in a 360° radius which make it possible to detect every can that passes through. The detection takes place under production conditions with up to 3000 cpm (50 cans per second). Defective cans are rejected by our blow-off unit.

Your benefits

  • Inline inspection system
  • Cost efficiency through automation
  • High speed detection
  • Inspects the decor and the OCR- or Barcode in one step
  • Flexible and easy installation
Performance data Mechanical dimensions
Speed of the analysis: 50 cans/s Size (L x W x H): 603 x 623 x 425mm
Max. conveyor speed: 5 m/s Height with mounting brackets: 665 mm
Fault detection at a
continuos  area   of:
2 mm2 Weight: <35 kg
Max. width of the conveyor: 158 mm
Necessary connections Max. can height: 195 mm
Operating voltage: 24 VDC, 15 A Max. can diameter: 80 mm
Ethernet network: 100 Mbit Min. can distance: 90 mm

For more information on price and availability in China and SE-Asia, please contact Container Machinery.