Corn retort packing bags are made of multi-layer composite materials (e.g., PET/NY/AL/CPP, PET/AL/CPP) and can withstand steam sterilization at temperatures exceeding 121℃. This eliminates all germs in the bag and satisfies commercial sterility requirements, allowing it to be stored at room temperature for an extended period. It is mostly used in the production of ready-to-eat soft-packed sweet corn kernels and fresh corn (whole or segmented). It successfully transformed a simple agricultural crop into a modern and easy food item, broadening the market and consumer base for corn products. It is a great example of how food packaging technology can boost the value of products.
1. Packaging forms:
Self-standing bag: The most common form, suitable for standing display, with a fashionable appearance.
Three-side sealed bag: Suitable for corn kernels or whole corn sections, with relatively lower cost.
Special-shaped bag: Designed as a standing bag with a zipper, for repeated sealing when not all the corn is consumed at once.
Transparent window bag: Partially made of high-barrier transparent materials (such as K-coated), allowing consumers to visually see the golden corn kernels and stimulating their desire to purchase.
2. Content shapes:
Fresh corn kernels: As ingredients, used in salads, fried rice, soups, etc.
Seasoned corn kernels: Already seasoned, ready to eat upon opening the bag, used as a snack or side dish.
Whole/segmented fresh corn: Vacuum-packed and sterilized at high temperature, ready to eat upon opening or heated for consumption.
1. Extensively extends shelf life
This is the most core advantage. High-temperature steaming sterilization (HTST) achieves commercial sterility, combined with the high barrier properties of the packaging (anti-oxygen, anti-water, and light-protective), can effectively prevent the growth of microorganisms and oxidation spoilage. The shelf life can reach 12-24 months at room temperature, completely solving the problem of the strong seasonality and perishability of fresh corn, enabling the product to be sold throughout the country and even globally.
2. Maximize the preservation of flavor, taste and nutrition
The vacuum environment prevents the contents from coming into contact with oxygen, thus better retaining the natural golden color, sweet flavor and tender texture of the corn. There is less nutrient loss (such as vitamins), and the quality is far superior to traditional canned products that have been cooked at high temperatures for an extended period of time.
3. Excellent ease of consumption, ideal for modern living.
The feature of being ready to eat upon opening is the biggest selling point. Whether used as a snack, breakfast element, or cooking ingredient, it removes the time-consuming tasks of peeling, cleaning, and cooking. Heating is also convenient. Y Simply submerge the packaging bag in hot water to heat, or split it open and place it in a microwave-safe container for short-term heating. This saves time and effort when adapting to the fast-paced urban life, and is particularly popular among young professionals, students, and mothers.
4. The packaging is lightweight, significantly reducing logistics costs.
The retort bag is incredibly lightweight and has a smooth texture, making good use of space. Compared to glass bottles and tin cans, it can save a significant amount of money on shipping and storage (about 30%-40%), which is especially important for agricultural products that require long-distance transportation. This directly improves the market competitiveness of the products.
5. The packaging design is exquisite, enhancing the product's added value.
The surface of the steaming bag has good printing adaptability, allowing for the creation of vivid and elegant designs and brand logos that effectively grab customer attention and stand out on the shelves. The high-end packaging image also supports a higher product price, thereby increasing the overall added value.
