Nowadays, the business is developing rapidly. A good food packaging bag can not only be presented in a simple design, but also in terms of materials, protection, and good bag making equipment. Next, I summed up eight points for everyone. I hope I can help you:
First, we must understand the requirements of food for protection
The chemical composition and physical and chemical properties of different foods are different, so the protective requirements of different foods for packaging are also different. For example, the packaging of tea should be high oxygen barrier (to prevent the active ingredients from being oxidized), high moisture resistance (tea leaves moisture and mildew), high light resistance (the chlorophyll in tea leaves will change due to sunlight), high resistance aroma (The molecular aroma components of tea leaves are easy to disperse and lose the taste of tea. In addition, tea leaves are also very easy to absorb external odors), and a considerable part of the tea on the market is usually packaged in transparent plastic bags such as PE and PP, which greatly wastes the active ingredients of tea. The quality of the tea is not guaranteed.
Contrary to the above foods, fruit, vegetables and the like have a respiration option after picking, that is, the package is required to have different transmittances for different gases. For example, after the roasted coffee beans are packaged, the carbon dioxide is slowly released. The cheese also produces carbon dioxide after packaging, so they should be packaged with high oxygen barrier and high carbon dioxide permeability. The protective requirements for packaging of raw meat, processed meat, beverages, small foods, and baked goods are also very different. Therefore, the packaging should be scientifically designed according to the different nature of the food itself and the different protective requirements.
Second, choose the packaging material with appropriate protection function
Modern food packaging materials mainly include plastics, papers, composite materials (plastic/plastic, plastic/paper, plastic/aluminum, foil/paper/plastic, etc.), glass bottles, metal cans. Wait. We mainly describe composite materials and plastic packaging. 1. Composite material
Composite materials are the most widely used and widely used flexible packaging materials. There are currently more than 30 types of plastics used in food packaging, and there are hundreds of multi-layer composites containing plastics. Composite materials generally use 2-6 layers, but special needs can reach 10 or even more layers. The use of plastic, paper or tissue machine, aluminum foil and other substrates, scientific and rational composite or laminate compatibility, can almost meet the requirements of a variety of different food packaging. For example, Tetra Pak milk made from multiple layers of plastic/cardboard/aluminum plastic/plastic can last up to six months to a year. Some high-resistance flexible packaged meat cans have a shelf life of up to 3 years. In some developed countries, the shelf life of composite packaging cakes can reach more than one year. After one year, the nutrition, color, aroma, taste, shape and microbial content of the cake still meet. Claim. Design composite packaging should pay special attention to the selection of each layer of substrate, the combination must be scientific and reasonable, the comprehensive performance of each layer must meet the comprehensive requirements of food packaging.
There are also fifteen or six kinds of plastics used in food packaging in China, such as PE, PP, PS, PET, PA, PVDC, EVA, PVA, EVOH, PVC, ionomer resin and so on. Among them, PVA, EVOH, PVDC, PET, PA, etc., high-resistance moisture, PVDC, PP, PE, etc.; radiation-resistant such as PS aromatic nylon; low temperature resistance such as PE, EVA, POET, PA, etc.; good oil resistance and mechanical properties such as ionomer resin, PA, PET, etc., ie high temperature sterilization and low temperature resistance, such as PET, PA and so on. The plastics of various plastics have different molecular structures, different degrees of polymerization, different types and amounts of additives, and different properties, even if the properties of the same plastics are different. Therefore, the choice of suitable plastic or plastic and other materials must be selected according to the requirements. Improper selection may result in degraded food quality or even loss of food value.
Third, the use of advanced packaging technology methods
In order to extend the shelf life of food, we adopt new packaging technologies that are constantly being developed, such as active packaging, anti-mild packaging, moisture-proof packaging, anti-fog packaging, anti-static packaging, selective venting packaging, non-slip packaging, cushion packaging, etc. New technologies, China's applications are not universal, and some methods are still blank. The application of these advanced technologies can significantly improve the protection function of packaging.
4. Select packaging machinery equipment matched with food processing technology
In order to meet the needs of food processing technology, a variety of new packaging equipment has been developed, such as vacuum packaging machine, vacuum inflatable packaging machine, heat shrink packaging machine, blister packaging machine, body packaging machine, sheet thermoforming equipment, liquid Filling machine, forming/filling/sealing packaging machine, aseptic packaging equipment, etc. According to the selected packaging materials and packaging process methods, selecting or designing packaging machinery that is compatible with food processing technology and production capacity is a guarantee for successful packaging.
5. Modeling and structural design should meet scientific requirements
The packaging design should meet the geometric requirements and strive to make a larger volume container with a minimum of packaging materials, which can save packaging materials and meet environmental requirements. The structural design of the packaging container should meet the mechanical requirements, and the compressive strength, impact strength, drop resistance, etc. should meet the requirements in the storage, transportation and sales of the package. The design of the packaging container should be innovative, such as the use of pineapple-shaped container for pineapple juice, and the packaging of apple juice, such as apple juice, is worth promoting. The packaging container should be easy to open or repeatedly open, and some require opening or sealing.
6. Compliance with packaging regulations of China and exporting countries
Every step of the packaging operation should be selected, sealed, printed, bundled and labeled according to packaging standards, regulations and regulations. Standardization and standardization throughout the entire packaging process will facilitate the supply of raw materials, commodity circulation and international trade, etc. And the disposal of waste packaging materials should meet environmental protection requirements.
Seven, packaging testing
Modern packaging is based on scientific analysis, calculation, rational selection, design and decoration, using advanced packaging techniques and packaging machinery. As a qualified product, in addition to the product (food) should be tested, the packaging must also undergo various tests. Such as the permeability, moisture permeability, oil resistance, moisture resistance of the packaging container, the role of the packaging container (material) and the food, the residual amount of the packaging material in the food, the resistance of the packaging material to the packaged food, the packaging container Compressive strength, burst strength, impact strength, etc. There are many types of packaging tests, and test items can be selected according to specific conditions and regulatory requirements.
Eight, brand awareness of packaging design and packaging design
Packaging and decoration design should meet the preferences and habits of consumers and consumers in exporting countries. The pattern design is best coordinated with the contents. The trademark should be in an obvious position and the text should be in accordance with the food requirements. The product description should be true. Trademarks should be catchy, easy to understand, easy to spread, and can play a wide-ranging role. The packaging design of brand-name products should have brand awareness. Some products are easily replaced and affect 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. There is doubt in the packaging. Therefore, a product should be scientifically packaged and cannot be easily changed.
Dongguan Bite Packaging Materials Co., Ltd. is a large-scale company specializing in the production of food-grade composite packaging. It is a professional composite packaging bag manufacturer that uses new equipment to produce packaging bags and film rolls to provide comprehensive, environmentally friendly and safe packaging services for the market. The company produces composite bags, film, fruit bags, aluminum foil bags, nozzle bags, stand-up bags, zipper bags, anti-static bags, shaped bags, etc., suitable for food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products, etc. Internal and external packaging for various industries. We adhere to the business philosophy of good faith cooperation, high quality and considerate service, and have been recognized by the industry. Our products are sold all over the world. Welcome friends from all walks of life to inquire, visit our factory for inspection and business negotiation.