What is your impression of food packaging?

1.What is Food Packaging Bag

Food packaging bags, is a kind of packaging design, life in order to facilitate the preservation, storage of food, resulting in product packaging bags. Food packaging bags are film containers that are in direct contact with food and are used to contain and protect food.

2.How are food bags designed?

The design of food packaging bags needs to start from the following points: First, understand the role of packaging. 1. the physical properties of load-bearing items: protection of products, convenient use. The protection of products from individual independent packaging, to the whole package, and then to the centralized sealing packaging, are used to protect the product from bumping and easy to transport. Convenient use from small packaging to large packaging is to protect the product, and the division from large packaging to small packaging has played a convenient purpose. More and more food packaging, from the daily packaging of the whole package is slowly doing scene segmentation, product upgrade enterprises, the packaging to do independent packaging: first, hygiene, second, can roughly estimate the amount of each use. 2. the role of display and publicity Product designers will treat packaging as a product, taking into account the use of scenarios, ease of use and so on, advertising designers will take packaging as a natural media. It is the most recent and most direct media contact with the target user. Good product packaging directly guide consumer consumption. Packaging positioning said brand and product positioning, packaging positioning is the extension of the product, is the first layer of contact with consumers "products". The positioning of the product will directly affect the form of packaging and even the role. Therefore, the packaging positioning must first be combined with the product to think. What is the differentiated positioning of your products in the same category? Is it cheap, quality, special people or innovative products that are unique? All these should be considered in combination with the products at the beginning of design.

3.The material and performance of food packaging bags?

Food flexible packaging color materials are mainly polyethylene, polypropylene, polyester, polyamide and other polymer materials.

(1) Residual solvent

Packaging molding generally need to go through blow molding, printing, composite and other processes, in order to improve the printability to speed up the printing speed, generally will add some solvents, "Lanzhou incident" after the solvent residue problem has increasingly become the focus of packaging safety. The national standard stipulates that the solvent residue should be less than 10mg/m2, and the enterprise standard is generally higher than the national standard. The total amount is less than 7mg/m2. The gas chromatograph can be used to detect and control the solvent residue.

(2) Barrier performance

Barrier properties include a barrier to gas and a barrier to moisture, and food spoilage is largely due to the inappropriate barrier properties of the selected material. The selection of materials should be based on different packages, shelf life, storage conditions and other suitable barrier materials. The GB19741-2005 (Standard for Liquid Food Packaging Plastic Composite Films and Packaging Bags) issued at the end of 2005 proposed to use GB/T1038 (Test Method for Permeability of Plastic Films) and GB/T1037 (Test Method for Permeability of Plastic Films and Sheets) to test the barrier properties of packaging films.

(3) film slipperiness

The surface of the film should have good smoothness to ensure that it can be successfully packaged at high speed. It should be determined according to the GB10006 (method for determining the coefficient of friction of plastic film and sheet). Generally, the coefficient of dynamic friction of the film surface is between 0.2 and 0.4. It should be noted here that with the increase of temperature, the surface properties of the material will change greatly. The FPT-F1 friction coefficient/peeling tester can be used to determine the dynamic and static friction coefficient of the material at very low temperature (room temperature -99.9 ℃).

(4) Heat sealing performance

The canning speed of modern filling machines is getting higher and higher, and problems such as leakage seal, virtual seal, adhesive head, wire drawing, seal rupture and the like are more likely to occur in the sealing process. This requires necessary test confirmation of the heat sealing temperature, heat sealing time and heat sealing pressure of the heat sealing machine before automatic packaging, so as to improve efficiency and avoid waste. It is worth noting that most of the filling production line from sealing to filling the whole process time is short, at this time the sealing temperature has not yet dropped to room temperature, the strength is low, easy to leak. Therefore, the prediction of hot adhesive strength (sealing strength at high temperature) is particularly important for the whole filling process, and HTT-T1 heat sealing tensile testing machine can be used to solve the above problems.

(5) ink performance

Food packaging film on the ink requirements in addition to the general and substrate binding force, wear resistance, but also to be able to resist sterilization and boiling requirements, and frost resistance, heat resistance, etc. to ensure that in the transport, storage process will not occur ink off, condensation and other phenomena. It can be tested according to GB7707 using printing combined with fastness tester.