Cooking bag material and process inventory

The boiled pouch is a composite package designed to replace metal hard cans, also known as "soft cans." Since cooking bags can be stored at room temperature and have a long shelf life, they can be packaged as cold foods, can also be packaged as cooked foods, are convenient to eat, are easy to carry, and can be used as tourism foods, and have developed rapidly at home and abroad in recent years. Its special packaging - cooking-resistant composite film and bags have also become an important part of flexible packaging production.
The rapid development of the flexible packaging industry based on retort pouches is also based on its special performance, so this issue will focus on the materials used for cooking pouches, especially on its process and its problems, as well as on the detection of systematically discussed, hoping to soft packs. The company has certain reference significance.

The advantages and classification of cooking bags

1. The main advantages of retort pouches (1) Because the retort pouches are relatively thin and can meet sterilization requirements in a short period of time, they can maintain the color, aroma, and taste of foods. (2) Packaged foods can be stored at room temperature and have a longer shelf life. (3) Cooking bags are lightweight, soft, and stackable. They take up less space, are easier to store and transport, and are more convenient for consumers to carry. (4) Easy to use, easy to open without special tools. (5) Compared with the packaging of glass containers and metal containers, the production cost of retort pouches is lower. (6) The contents are varied.

2. Classification of cooking bags (1) according to the sterilization temperature: ordinary sterilized bags, ultra-high temperature sterilization bags. (2) According to the number of layers; two layers of cooking bags, three layers of cooking bags, four or more layers of cooking bags. (3) According to light transmittance: transparent cooking bags, opaque cooking bags. (4) According to the function points: ordinary cooking bags, high barrier cooking bags. (5) According to the composite method: dry composite bags, co-extruded composite bags.

Cooking bag material

Based on the special properties of cooking bags, there are also special choices in the material, generally including (1) substrate (structure has two, three, four or even more), (2) adhesive (have good adhesion Degree, high temperature resistance to medium and heat resistance, (3) inks (inks that use two-component reactive polyurethane as a binder), (4) solvents, and other materials (due to the high quality requirements of high-temperature cooking bags, The solvents must also be used with special care. First, the adhesives and inks used in high-temperature cooking bags are intended to use high-quality, high-purity, non-toxic, odorless, odorless, solvent-free solvents and should not contain benzene, toluene, or both. Toluene, cyclohexanone or other high-boiling solvents. Secondly, the diluting solvent used in the adjustment and transfer of the ink should also have strict standards for its water content).

Cooking bag inspection

Among the manufacturers of retort pouches, how to detect the packaging under different temperature conditions has always been an issue that the industry has paid more attention to. How to provide a good high-temperature cooking bag to our consumers? Testing is the primary means of our control. Our detection method is summarized as follows:

How to Cook a Retort Bag Retort Test How to Detect a High-Temperature Retort Bag How to Eliminate the Effect of Partial Air Pressure An accurate determination of the resistance to retort pouches.

In summary, in recent years, the demand for cooking bags has been on the rise, and there are also certain achievements in technology. However, it has high costs and risks, and it is necessary for the flexible packaging industry to find continuous problems in production in order to keep cooking bag technology constant. improve.