When we buy frozen and fresh food in supermarkets, we often pay attention to the labels on the products. Food labels can truly reflect their attributes and safety indicators. Formal and legal food labels protect the health and safety of our consumers to a certain extent. Therefore, choosing the right frozen food self-adhesive label is a particularly important step.
If you’re new to the frozen food industry and have already chosen fancy packaging for your frozen treats, it’s time to think about the labels you put on your products. Hashtags are an important part of your business strategy. Because labels contain important information about your product while making your product more attractive to consumers.
In this article, we will mainly introduce the characteristics that frozen food labels should have and the requirements for labeling.
What are Frozen Food Sticker Labels?
Frozen food self-adhesive labels, also known as low-temperature resistant labels or low-temperature labels, are mainly used in sub-zero low-temperature environments such as refrigeration, freezing, ultra-low temperature, liquid nitrogen, etc.
Frozen food labels are mainly made of glass cardboard, thermal paper, offset paper, etc. These materials have excellent low-temperature bonding performance, strong water resistance, and strong bonding performance to PP and PE cling film, and can be widely used in content labels and price labels for frozen food or beverages.
Characteristics of low-temperature labels
Frozen food refers to foods that have qualified food raw materials that have been properly processed, frozen at a temperature of -30 degrees Celsius, and stored and distributed at -18 degrees Celsius or lower after packaging. Due to the low-temperature cold chain storage throughout the whole process, frozen food has the characteristics of long shelf life, non-perishable, and convenient consumption, but it also poses greater challenges and higher requirements for packaging materials and labeling materials.
Due to the high humidity and low temperature in the storage environment of frozen food, it is easy to deform, wrinkle, and fall off if ordinary labels are used in cold storage. The labels selected in such an environment must be able to have good moisture-proof and low-temperature resistance characteristics.
Freeze self-adhesive labels generally use special self-adhesive labels, and coated paper is not recommended. If frozen labels are to be attached to meat products and transported in the cold chain, synthetic paper labels that are resistant to oil, water, water, and low temperature should be selected
In summary, low-temperature labels need to have the following characteristics:
1. The glue has good viscosity and can keep from falling off;
2. Excellent ink retention, the printed content is not easy to erase;
3. Moisture-proof, water-proof, and oil-proof.
How to stick the frozen food label?
If the label is warped, blistered, or crookedly pasted, it will give customers the first impression that it is a defective product. Naturally, they will not buy unqualified products. Therefore, it is particularly important to paste the frozen label.
We know that the glue for self-adhesive printing is usually able to fully exert its viscosity at room temperature. In a low-temperature environment, the fluidity of the glue will decrease, causing the viscosity of the glue to drop sharply, which will affect the actual effect of labeling. When labeling in a low-temperature environment, ordinary adhesives will become hard and brittle so that the viscosity will be greatly reduced. In addition, there may be moisture or even frost on the surface of the object to be labeled in a low-temperature environment, which also increases the difficulty of labeling. Therefore, labeling in a low-temperature environment is not only a test for the adhesive but also imposes strict requirements on the water and tear resistance of the surface material.
Basic self-adhesive label glue cannot meet the application requirements of cold chain labels, so most labels in cold storage will use professional low-temperature glue. The characteristic of this type of glue is that it can still maintain a stable viscosity in a low-temperature environment, and can meet the labeling requirements of cold chain labels in a low-temperature environment.
If the label is pasted at room temperature and then placed in cold storage, the surface paper of the label should be selected with certain elasticity. Since the packaging form of the item may be ordinary paper packaging or nylon bag packaging, labels of different materials can be selected according to needs.
At present, low-temperature glue cold chain labels with high costs are mainly used in high-end industries such as pharmaceutical vaccines. Most of the food, freight, and logistics industries use the method of placing the outer packaging box at room temperature for 24 hours after labeling it, and then packaging it in a low-temperature environment after the label has fully exerted its viscosity.
Pharmaceutical Applications of Freeze Labels
Low-temperature labels are not only used on frozen food packaging, but also in the pharmaceutical field.
Medical labels are usually stored and shipped in a low-temperature environment. Because many vaccines need to be in a low-temperature environment during the production, storage, and transportation process, it is necessary to choose special self-adhesive paper labels for labeling, which are generally called cold chain labels.
The surface of this type of label is printed with temperature sensor ink. After the ambient temperature changes, generally, the color of the ink will change irreversibly when the temperature rises. Such tags have the function of detecting changes in ambient temperature. Therefore, the entire process of production and subsequent use must be carried out in a low-temperature environment.
If you have custom label needs and questions, please do not hesitate to contact our team for professional advice.
