Nowadays, with the rapid development of Commerce, a good food packaging bag is not only a design drawing can perfectly present it, but also from the material, protection, good bag making equipment and other aspects. Next, we summarize eight key points. I hope it can help you:
1、 It is necessary to understand the protective requirements of food
The chemical composition and physical and chemical properties of different foods are different, so the protective requirements of different foods on packaging are also different. For example, the packaging of tea should be high oxygen resistance (to prevent the oxidation of effective ingredients), high humidity resistance (damp and moldy deterioration of tea), high light resistance (chlorophyll in tea will change under the action of sunlight), and high resistance aroma (molecular aroma components of tea are easy to emit and lose the flavor of tea). In addition, tea is also easy to absorb external odor), and a considerable part of the tea on the market is ordinary PE, PP and other transparent plastic bags packaging, which greatly wastes the effective ingredients of tea, and the quality of tea can not be guaranteed.

On the contrary, fruits, vegetables and so on have the choice of respiration after picking, that is to say, packaging should have different permeability to different gases. For example, fried coffee beans also slowly release carbon dioxide after packaging, and cheese will also produce carbon dioxide after packaging, so their packaging should be high oxygen resistance and high carbon dioxide permeability. Raw meat, meat processing food, beverage, small food, baked food and other packaging requirements are also very different. Therefore, the packaging should be designed scientifically according to the different nature and protection requirements of the food itself.

2、 Choose the packaging material with suitable protection function
Modern food packaging materials mainly include plastic, paper, composite materials (plastic / plastic, plastic / paper, plastic / aluminum, foil / paper / plastic, etc.), glass bottles, metal cans, etc. We use composite materials and plastic packaging as the main explanation. 1、 1. Composite materials
Composite material is a kind of flexible packaging material with the most kinds and wide application. At present, there are more than 30 kinds of plastics used in food packaging, and there are more than 100 kinds of multilayer composite materials containing plastics. Generally, 2-6 layers are used for composite materials, but 10 or more layers are needed for special requirements. Plastic, paper or tissue machine, aluminum foil and other substrates, scientific and reasonable composite or laminated use, can almost meet the requirements of different food packaging. For example, Tetra Pak milk, which is made of multi-layer materials such as plastic / cardboard / aluminum plastic / plastic, has a shelf life of up to half a year. The shelf life of some high barrier soft packaging meat cans can be as long as three years, and the shelf life of composite packaging cakes in some developed countries can reach more than one year. After one year, the nutrition, color, aroma, taste, shape and microbial content of the cake still meet the requirements. In the design of composite packaging, special attention should be paid to the selection of each layer of substrate, the collocation must be scientific and reasonable, and the comprehensive performance of each layer combination must meet the comprehensive requirements of food for packaging.
2. Plastics
There are 15 or 6 kinds of plastics used in food packaging in China, such as PE, PP, PS, pet, PA, PVDC, EVA, PVA, EVOH, PVC, ion-bonded resin, etc. Among them, PVA, EVOH, PVDC, pet and PA have high oxygen resistance, PVDC, PP and PE are high moisture resistance; PS aromatic nylon is resistant to radiation; PE, EVA, poet, PA are resistant to low temperature; ionic bond resin, PA and pet are good in oil resistance and mechanical properties, i.e. high temperature sterilization and low temperature resistance, such as pet, PA, etc. All kinds of plastics have different monomer molecular structure, different degree of polymerization, different types and quantities of additives, and different properties, even if the same kind of plastics with different brands have different properties. Therefore, it is necessary to select appropriate plastics or the combination of plastics and other materials according to the requirements. Improper selection may lead to the deterioration of food quality and even loss of edible value.
3、 Adopt advanced packaging technology
In order to extend the shelf life of food, new packaging technologies are developed, such as active packaging, mildew proof packaging, moisture-proof packaging, anti fog packaging, anti-static packaging, selective breathable packaging, anti-skid packaging, cushioning packaging, etc. these new technologies are widely used in developed countries, but they are not widely used in China, and some methods are still blank. The application of these advanced technologies can be significantly improved The protection function of packaging.
4、 Selection of packaging machinery and equipment matching with food processing technology
In order to meet the needs of food processing technology, a variety of new packaging equipment have been developed, such as vacuum packaging machine, vacuum inflatable packaging machine, heat shrinkable packaging machine, blister packaging machine, body packaging machine, sheet hot forming equipment, liquid filling machine, forming / filling / sealing packaging machine, aseptic packaging equipment, etc. According to the selected packaging materials and packaging technology, the selection or design of packaging machinery matching with food processing technology and production capacity is the guarantee of successful packaging.
5、 Modeling and structural design should meet scientific requirements
Packaging design should meet the geometric requirements, and try to use the least packaging materials to make containers with larger volume, which can save packaging materials and meet the requirements of environmental protection. The structural design of the packaging container should meet the mechanical requirements, and the compressive strength, impact strength and drop resistance should meet the requirements of the storage, transportation and sales of the packaging. The design of packaging container should be innovative, such as using pineapple to describe pineapple juice and apple shaped container to package apple juice. The packaging container should be easy to open or repeatedly opened, and some need to show opening or sealing.
6、 In line with the packaging regulations of China and export countries
From beginning to end, each step of packaging should be selected, sealed, printed, strapped and labeled according to packaging standards, regulations and regulations. Standardization and standardization run through the whole packaging process, which is conducive to the supply of raw materials, commodity circulation and international trade. The recycling of packaging containers and the treatment of waste packaging materials should meet the requirements of environmental protection.
7、 Packaging inspection
Modern packaging is based on scientific analysis, calculation, reasonable material selection, design and decoration, through the use of advanced packaging technology and packaging machinery and equipment. As a qualified commodity, in addition to the product (food) should be tested, packaging must also go through a variety of tests. Such as the air permeability, moisture permeability, oil resistance, moisture resistance, the interaction between the packaging container (material) and food, the residual amount of packaging material organization in food, the resistance of packaging material to the packaged food, the compressive strength, burst strength and impact strength of the packaging container. There are many kinds of packaging test, and the test items can be selected according to the specific situation and regulations.
8、 Packaging decoration design and brand awareness of packaging design
Packaging and decoration design should be in line with the interests and habits of consumers in the exporting country. The pattern design is best coordinated with the contents. The trademark should be in an obvious position and the written description should meet the food requirements. The product description should be true. The trademark should be easy to understand, easy to spread, and can play a wide publicity role. The packaging design of famous brand commodities should have the awareness of famous brand. Some product packages can be easily replaced, which will affect the sales. For example, a certain brand of vinegar in China has a good reputation in Japan and Southeast Asia, but the sales volume after the replacement of packaging is greatly reduced because consumers have doubts about the new packaging. Therefore, a product should be scientific packaging, and can not be easily changed.
Dongguan Beite packaging materials Co., Ltd. is a large-scale company specializing in the production of food grade composite packaging. It is a professional manufacturer of composite packaging bags. It uses new equipment to produce packaging bags and roll films, providing comprehensive, environmental protection and safety packaging services for the market. The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.