Why are Packaged
foods refocused now?

  • We'll support new challenges in your food development.
  • We'll work with you to seek sustainable food distribution forms.

ALP Co., Ltd. is a small sterilizer manufacturer for custom food-producing providing high quality and efficiency at a low cost.

main image RK / RKZ series

The future of "Retort foods",

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Among the many packaged foods such as canned foods and bottled foods, Retort foods (Ready-to-eat meals) sealed with aluminum pouches are now in the spotlight. Retort foods were first developed by the US Army in the late 1950s as lightweight substitutes for canned field rations. In 1969, these foods were carried by the Apollo 11 moon mission, and were dubbed the “food of the future.” The US consumer market was slow to embrace the concept, however, and it was in Japan that the development of packaged foods evolved. The first product to be made commercially available was a Japanese-made retort curry. Japan’s rapid economic growth at the time was transforming daily lifestyles and spurring demand for quick, easy-to-prepare meals. In response, the single-serving curry involved simply warming the pouch in hot water. This curry became widely popular and paved the way for a wave of other retort foods, including pasta sauces and soups.

Retort foods have long been embraced by Japanese consumers who appreciate their freshness and convenience. These are produced by placing pre-cooked food in a pouch or container. This is hermetically sealed and heated under high pressure at around 120°C (250°F), a sterilization process that permits storage at room temperature for about three months to one year without preservatives. The thermal treatment and multi-layered construction of the pouch maintain food’s fresh flavor and nutrient value.

Foods such as meat, processed marine products, gravy sauces, curries, soups, cooked rice are now often packed in retort packages to extend shelf life in many Asian countries, not just Japan. Especially those that can be ready-to-eat after opening a pouch offer great opportunities in the retort market.

As the lifestyles of younger generations in cities change, there is a growing demand for Retort foods that can be preserved and ready to eat. Furthermore, the outbreak of COVID-19 has damaged restaurant businesses around the world and forcing a shift to small food manufacturing. According to Food Navigator USA, the COVID-19 situation will reduce food consumption away from home by 20%. Therefore, increasing demand for food from the home will support the growth of this market.

Even after the coronavirus pandemic, the demand for pouched meat and seafood products is expected to grow due to the advantages of Retort foods such as sustainability, transparency, food safety, and food waste reduction. The retort packaging market is expected to reach USD 1.76 billion by 2023, according to data from the Statistics Bureau of Japan.

Small Retort Sterilizer - RK RKZ series -
for R&D of Packaging materials

RK / RKZ series

Benefits of our Small Retort Sterilizer
"RK / RKZ series"


  • Small and affordable prices can contribute to the early stage of food development.
  • Steam generation by electric heater reduces running costs.
  • A counter-pressure system with a small compressor protects the package from bag breakage.
  • The standard water cooling function reduces heat denaturation of food.
  • F-value control system helps set optimal sterilization conditions.
  • In addition to pouches, bottles, and cans, the RK-3030 model also supports the sterilization of special containers such as plastic bowls and infusion bags by multi-stage pressure control.
  • The RKZ-40II model can load 128 pouches of 130 x 180 mm at a time, making it ideal for small lot production.
  • A vacuum packaging machine that strongly seals the pouch is also available as an option.
  • With abundant instruction videos and know-how content, even beginners do not take time to operate.
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Our sterilizers support new distribution forms and packaging of various dishes in Asian countries.

Massa man curry
Massa man curry
Massa man curry
Bak kut teh
Massa man curry
Nasi goreng
Massa man curry
Yong tau foo
Massa man curry
Massa man curry
Ingredients of Pho

Customer Testimonials

A restaurateur in Indonesia

A restaurateur in Indonesia

I am using ALP Retort Autoclave RKZ-40Ⅱto perform small-batch production of local meals, selected from my restaurant menu, sealed with retort pouches and distribute them domestically and overseas.
I believe this retort machine is very ideal for small-batch producers for Ready-To-Eat Meals and strongly recommendable.

A food producer in Thailand

A food producer in Thailand

We are using ALP Retort Autoclave model RK-3030 to develop dysphagia diets for elderly people.
It has various functions to quite assist us for the development. We plan to install another model RKZ-40Ⅱ to start to perform small-batch production.

A food producer in Thailand
Hong Kong

A central kitchen food developer in Hong Kong

We had sought a retort machine for R&D of our new foods and fortunately stumble across ALP Retort Autoclave model RKZ-40Ⅱ and decided to purchased the unit to succeed in business. Now, we are quite satisfied with the RKZ-40Ⅱ. It is recommendable for those who look for an affordable retort R&D machine.

In these free guides for
Retort food development,

The people who should download our useful content are:

Useful contents in Guidance for new
Retort food development

  • Retort food development workflow
  • How to set sterilization conditions
  • Shelf-Life testing guidelines
Download for Retort foods development guidance

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