1. Vacuum bag packing
On the contrary, it is filled in molded bags, and another form of packaging is vacuum bags, which are widely used in frozen foods. The advantage of this is that individual foods are heavier (such as pigs'hooves or balls) and this tight packaging can bring sensory value to consumers. The automatic vacuum packaging equipment has the advantages of simple operation, beautiful appearance and convenient adjustment. Another method is to use new automatic equipment to package the film from top to bottom. The content is the first time the film is placed on the machine, then the first three movies and a sealed top surface, then vacuum, followed by continuous operation of secondary sealing and cutting. Overseas, this equipment is an efficient system and has been used to produce hamburgers in large quantities for frozen food and other steamed bread. The main packaging material is soft, mainly nylon/PE, which has good formability and expansibility. The film is made of polyester/PE composite material. It is sensitive to photovoltaic cells and suitable for printing.
2. Carton packing
The flexible packaging based on plastic film has increased in the form of carton packaging. The utility model not only maintains the expansion appearance, speeds up the packing speed, improves the production efficiency, has good appearance effect, but also has the advantages of convenient processing and adjustment. There are two kinds of carton packaging for frozen food: top and inside. The former is made of PE, PP plastic film and cardboard stamped together. It is stamped and cut by a small packaging machine. It is composed of box body and upper packaging. It is automatically sealed mechanically. The box cover is integrally connected with the box body. When the upper and lower parts of the machine are separated, the contents enter from the side and seal automatically.
3. Aluminum foil packaging
As a kind of packaging material, aluminum foil has the advantages of heat resistance, cold resistance and good barrier. It can prevent food from absorbing harmful additives and odors from the outside world, and has the function of drying and losing weight. The material has good thermal conductivity and is suitable for reheating after thawing.
4. Microwave oven packaging
随着微波炉的普及，适用于微波炉的冷冻食品包装容器有可加热的塑料盒。这种材料可用于微波炉和烤箱。国际纸业有限公司开发的压缩容器，由长纤维原纸和聚酯挤出成0。43毫米~ 0。69毫米，镀层厚度25微米~ 38微米，一般可承受200℃~ 300℃的温度。日本冷冻食品专用微波炉加热的包装材料有聚酯/纸、聚丙烯和耐热聚酯。
With the popularization of microwave ovens, there are heated plastic boxes in frozen food packaging containers suitable for microwave ovens. This material can be used in microwave ovens and ovens. Compression containers developed by International Paper Co., Ltd. are extruded from long fibre base paper and polyester to 0. 43 mm to 0. 69 mm, coating thickness 25 micron to 38 micron, generally can withstand 200 ~300 ~C temperature. The packaging materials heated by microwave oven for frozen food in Japan include polyester/paper, polypropylene and heat-resistant polyester.
Second, foreign body inspection and weight management
In the process of packaging, if there are some defects such as insufficient weight, improper sealing, exposed holes and other foreign bodies, the product should be inspected by sensory organs or special settings. Usually used to detect metal, weight sorter. Foreign body detection equipment plays an important role in quality management of mass production of frozen food. Detection of all foreign bodies by instruments is also a hot topic in international research. The weight sorter is to calculate the allowable range before packing and set it to automatic confirmation device. It must be set correctly and appropriately. The light weight should be sorted out. The light weight can be sorted out by the sorting device through the conveyor belt, so as to combine into continuous production.
These are the characteristics of all kinds of packaging. If you need Jinan plastic bags, Jinan aluminum foil bags can be consulted by clicking on our official website: .