Factors affecting food safety

With the improvement of living standards, bottles are becoming more and more useful, not only food, beverages, medicinal plastic bottles, but also anything you can think of. Nowadays, many people put their famous watches in, and then equipped them with aluminum caps to raise the grade. Unlike traditional wooden or carton packaging, the contents are invisible. The plastic bottle packaging is not only high-grade, but also the content is clear at a glance, which can be seen directly without opening it. After customers shop, the transparent bottle can be reused. Unlike other packaging, they can only be a single product, and reusable bottles are also environmentally friendly. Transparent polyester cannot be reused after repeated use, and it can also be recycled and degraded without causing environmental pollution. According to product needs, it can be matched with bottle caps of different colors and styles. The plastic cap can be made into various colors, which is very convenient. Metal bottle cap texture, good gloss, higher grades of different colors. However, the price of metal bottle caps is higher than that of plastic bottle caps, which is very suitable for products. The trademark LOGO can also be printed on the bottle cap or bottle.

However, these goals can only be achieved by reopening the mold. If you need packaging bottles of different shapes, you can also design a rough shape yourself, and then make the bottle shape you want according to the designed bottle shape and the specific process of blowing. However, these materials are needed to start a new mold. Mold opening is a very complicated process and requires professional communication. Mold opening will also increase a lot of costs. If the medical plastic bottle is fixed, the unit price will be different from the general public bottle. In the production process, QS standards are implemented for food plastic bottles, which are supervised by relevant departments. Plastic food bottles are relatively safe at this stage of production, but food plastic bottles have a long time from production to filling, logistics and consumers. Use the chain, there is a noteworthy element in this chain. Food plastic bottles are safe and stable in high temperature environments. At present, with the increase in temperature, factors affecting food safety should cause food production companies and food packaging machinery companies to attach great importance to them.



First, in the process of food filling, more and more foods are sterilized by high temperature, which puts forward higher requirements on the temperature resistance index of food plastic bottles, otherwise it is difficult to ensure the packaging safety of the filled food.

Second, in transportation and shelves, the summer weather is very hot, sometimes the temperature will reach 30-40 degrees, the temperature in the compartment will be higher. In this environment, food plastic bottles must maintain the stability of the packaging, which requires food plastic bottles to ensure high temperature resistance. There are hundreds of industrialized plastic products, and there are more than 60 commonly used plastics.

The commonly used classification methods are as follows: according to the performance after heating.
One is thermosetting plastics. It is characterized by being heated at a certain temperature and within a certain period of time, or after adding a curing agent, it is cured and formed. The cured plastic has a hard texture, does not dissolve in any solvent, and does not soften after heating. It will decompose if it gets too hot. Commonly used thermosetting plastics include bakelite, electric jade, decorative panels, and unsaturated polyester plastics.

Second, thermoplastics. The characteristics of this kind of plastics are softening by heating and hardening by cooling. During processing, they generally only maintain their chemical properties during physical changes. Most of the resins of this kind of plastics are polymer resins. Common thermoplastics include nitrocellulose plastics, cellulose acetate plastics, and polyethylene plastics. , Polypropylene plastic, polystyrene plastic, PVC plastic, etc. According to the scope of application 1. Food plastic bottles. This type of plastic mainly refers to plastics with large output, wide use, and low price, accounting for about 80% of the total output of plastics. The main varieties are polyethylene, PVC, polypropylene, polystyrene, phenolic, amino plastics, etc.

Second, engineering plastics. Generally refers to plastics that can be used as structural materials in engineering technology. This plastic product has the characteristics of high mechanical strength, chemical resistance, high temperature resistance, etc., which can replace metals or other special purposes. Its main varieties are: polyamide, polycarbonate, polyoxymethylene, polyether, ABS, polyether, fluoroplastics, etc. Divided by the degree of flammability. 1. Combustible plastics. The plastic burns severely after encountering an open flame and is not easy to extinguish, such as nitrocellulose, which is a dangerous product. The second is flammable plastics. The plastic burns in an open flame and has no self-extinguishing property, but it burns fast, such as polyethylene and polypropylene.

Third, flame-retardant plastics. The plastic can burn quickly in a strong open flame, and quickly extinguish after leaving the fire, such as phenolic plastic, cellulose acetate plastic, PVC plastic, etc. Cangzhou Renrui Food and Drug Packaging Co., Ltd. welcomes merchants to come to consult!