What do I need to know before purchasing a food bag?

First, packaging film to comply with national standards, can not be secondary charge

Food enterprises first of all to find out what materials their food packaging bags need; Due to the lack of expertise in packaging materials and the simple pursuit of low prices, from time to time there is a situation of being fooled.

In the case of composite bags, for example, many foods are used for vacuum packaging, and the materials of such bags should have at least one layer of nylon packaging, but some composite bags on the market steal less material, no nylon materials, but use polyester plastic (PET), because nylon materials are twice as expensive as PET. The result is that the bag is very brittle and not soft, weak anti-piercing ability, resulting in food packaging leakage, broken bags, not worth the loss, economic losses and negative effects far higher than the cost savings of low-cost bag purchase.

Also for example, the new packaging materials of the seven-layer co-squeezed food bags, should be at least two layers of nylon, but some use one layer, and nylon content is low, and some also use smuggled garbage, more problems. These bags have poor barrier, easy to break, and are not resistant to high and low temperatures. At present, there are aluminum-plated bags as aluminum foil bags to food enterprises to promote the situation, also need to be timely identification, to prevent fraud.

Second, food packaging bags to meet food safety quality requirements

1, food packaging bag enterprises should require packaging bag manufacturers to use packaging film in line with national standards. If the composite bag material to use green environmental protection, do not use benzene and other harmful substances of dry composite plastic packaging, because its solvents easily penetrate contaminated food.

2, food bags to be flat. No scratches, burns, bubbles and creases. Flatness is not only a requirement for beauty, but also about the quality of food, if the bag seal is uneven, for high-temperature cooking or low-temperature freezing of food packaging is easy to crack.

3, printing to use green materials. QS standard requires food packaging should not detect harmful to human health benzene solvents, but because benzene solvents than environmentally friendly benzene-free, ketone-free solvent prices are about 30% lower, and brightness, color firmness is better, so many bags printing also use such materials, often contaminated food problems.

4, the production of food packaging enterprises to meet the production environment, to avoid the process of bag-making contaminated food packaging bags.

Third, tailor-made food packaging bags for food enterprises

Packaging bag manufacturers should choose suitable packaging materials and processing technology according to the packaging needs of food enterprises, so as to avoid unnecessary costs for food enterprises. Take grain packaging bags as an example, now many grain production enterprises are required to use beautiful, good preservation of vacuum plastic packaging. Some companies choose composite bags, thinking the cost is low. But in fact, the quality performance is suitable for grain packaging multi-layer co-extrusion material production bags, the cost is the same as composite. Because the thickness of the composite material to reach 100 microns, and because the material is the use of hot melt process, do not use adhesives, food safety is guaranteed. Those who really take food enterprises as customers in the heart to do, and has a certain level of their own packaging enterprises, will certainly be able to do this.