Packaging containers or commodities packaging, if the shape and rigidity of the classification, regardless of what material is made, can be summarized into two main categories, one is the rigid packaging containers, with a fixed shape, rigid structure of the packaging; the second is the flexible packaging containers or flexible packaging, with a certain volume, but without a fixed shape of the body, the outer surface of the soft packaging products.
The inner quality of the product and technical performance of the protection of the preservation of packaging should have the most essential function. Due to the variety of products is very diverse, its performance, structure, form and other differences, so the so-called packaging "protection function" of the specific meaning of different products have different distinctions.
For people's production activities and daily life with a variety of equipment, appliances, supplies - mainly refers to electromechanical devices, instruments, hardware, equipment, chemicals, etc., generally have a larger volume and rigid structure, or the human body and the environment with a certain degree of risk. Must use a variety of rigid packaging containers made of metal, wood, plastic, cardboard, composite materials, etc., in order to ensure that the product in the circulation and transportation process from physical, mechanical, chemical, environmental, climatic conditions and other adverse factors. Such as food, drugs, health products, household chemicals and other products to fluid, semi-fluid, powder, bulk, particles and other substances in the form of the majority. Its quality and performance of human health and quality of life is essential, the main requirement of its packaging to protect the contents of the product in circulation and transportation and sales within the period of use, free from or less affected by chemical, biological, environmental, climatic and other factors, to maintain the original composition, quality, performance unchanged, and even extend the shelf life of the product, and so a variety of flexible packaging materials and products came into being.
Flexible packaging, also known as flexible packaging. Initially referred to the plastic film bag packaging, and later referred to a variety of single material or composite materials, flexible packaging or flexible containers, and now even includes semi-rigid packaging, such as blister packaging, paste the body of the packaging and some thermoforming packaging forms.
More packaging materials are generally paper, cellophane, plastic film, aluminum foil, paper/plastic/aluminum two or more materials composite film. Flexible packaging with its excellent protective function, packaging in the empty volume is less, the external form of rich and diverse, applicable to a wide range of commodities, and materials from a wide range of sources, the use of convenient operation, low cost of circulation and transportation, and other significant advantages, and quickly gained market promotion.
The development of flexible packaging from the development of the commodity economy, consumer demand and the pressure of market competition, at the same time it benefits from plastics, paper, metal foils, a variety of materials, coating / plating / compound and other technological innovation and progress.
Types of flexible packaging products
The most common flexible packaging products on the market at present to meet the requirements of a variety of packaging performance are: food, pharmaceutical packaging - high-temperature cooking bag, food, pharmaceutical packaging - multi-layer high barrier properties *** extruded aseptic film; active packaging with fresh film; food packaging - double oven (electric oven, microwave oven) with *** extruded composite sheet containers and cover materials; small hardware parts packaging - gas-phase rust-proof heat-shrinkable film; other packaging -pesticide bags, fertilizer bags, electromagnetic shielding bags; non-packaging supplies -pipe protection composite film, etc..
Advantages and application prospects of flexible packaging
Suitable for a wide range of commodities. From block, granule, powder goods, to liquid semi-liquid food, aerated drinks, alcohol, vegetables and fruits; from drugs, health care products, medical equipment, to small hardware goods, toys, stationery: from household chemicals, sanitary products, to clothing, textiles and so on are not applicable.
It can meet the diversified protection requirements of commodities and significantly improve the shelf life of commodities. There are a variety of flexible packaging materials, both to meet the water vapor, gas, oil, organic solvents and other substances, respectively, the barrier requirements, but also to meet the rust, corrosion, electromagnetic radiation, static electricity, chemical resistance and other requirements, as well as aseptic preservation, non-toxic and non-polluting requirements.
The packaging process is simple, easy to operate and use. Product manufacturers, packers as long as the purchase of good quality specific functional flexible packaging materials and equipment, can be self-packaging production, technical requirements are easy to master. Flexible packaging products are easy to open and easy to use.
Stronger attraction of goods, especially suitable for sales packaging requirements. Flexible packaging is the most affinity for the form of packaging. Flexible packaging materials and products of light texture, soft, comfortable feel, and suitable for colorful printing, information conveyance effect is good, so that consumers have a good sense of credibility.
Save packaging costs and transportation costs. As most of the flexible packaging materials for the soft and lightweight film and sheet, packaging stickers, packaging materials accounted for the weight of small, invalid empty space in the package, the circulation of goods is very convenient transportation, transportation costs are much lower than the use of rigid packaging of goods.
Resource and energy consumption, environmental protection and other aspects have obvious comparative advantages. Flexible packaging on the use of natural materials is less, packaging materials and the weight of the contents of the weight ratio is very small, the volume of packaging and the volume of the contents of the ratio is also small. Therefore, from the variety and quantity of resource consumption, flexible packaging has other packaging forms of incomparable advantages. As the material is light and soft, easy to fold, easy to bundle, flexible packaging waste material recycling and transportation is quite convenient, waste disposal methods more, according to the nature of the waste material can be taken to landfill, incineration, decomposition, regeneration and other methods.