High-temperature cooking bags and vacuum bags are used to package all kinds of meat cooked food, easy to use and hygienic. Material: NY / PE, NY / AL / RCPP, KNY / PE Characteristics: Moisture-proof, temperature-resistant, shading, fragrance-preserving, toughness Applicability: high-temperature food, ham, curry, roasted eel, grilled fish and braised products Typical structure of boiled bag PET / PE BOPA / PE PET / AL / PE Product characteristics ● Can withstand a temperature not higher than 106 ℃, no layering, no leakage. ● High heat seal strength, good puncture resistance and high impact resistance. ● It has good printability and beautiful printing. ● Good oil resistance. . . All kinds of water cooked food packaging. Self-standing bags are bags that are not easily deformed and can be placed upright. Scope of application of self-standing bags: (1) Daily chemicals (laundry liquid, softener, various supplement packages) (2) Pet food (dog food, cat food, etc.) (3 ) Food (Puffed food, rice, dried fruit, chestnut bags and other cooking self-supporting bags) (4) Products (tea, powder granules) Second, self-standing bags Product features: (1) good standing (2) pressure resistance, leak-proof Good performance (3) Strong impact resistance (4) Can withstand high temperature cooking. The materials of self-supporting bags currently produced are: (1) ONY / LLDPE (2) PET / AL / LLDPE (3) PET / ONY / LLDPE ( 4) PET / CPP (5) ONY / CPP (6) PET / VMPET / LLDPE (7) OPP / VMPET / LLDPE (8) other special material structure self-supporting bag products aluminum foil bag packaging usually refers to aluminum-plastic composite vacuum packaging bags This type of product is suitable for moisture-proof, light-proof and vacuum packaging of large-scale precision mechanical equipment, chemical raw materials and pharmaceutical intermediates. Multi-layer structure is adopted, which has good water and oxygen barrier function.
The boiled bag packaging is a flexible packaging product used for boiled food and water. It is different from the high temperature cooking bag and can withstand high temperature heating. It is also structurally different from the high temperature cooking bag with a three-layer or four-layer structure. Boiled bag packaging is usually two-layer or three-layer structure.
Although it is said that the high-temperature cooking bag is slightly insufficient in high-temperature resistance and barrier performance, the actual production process of the boiled bag still has high technical index requirements, which is specifically reflected in the selection of materials for the production of the boiled bag. Above.
First of all, the choice of packaging film materials, boiled film options generally have several materials such as BOPA, PE, AL. Among them, the selection of BOPA film should consider the flatness of the film, and the bow effect should be small. The surface tension of the film should ensure the adhesion of the ink. based on the appearance of the product, the heat shrinkage rate and the relative humidity should be selected. Good BOPA film that can ensure the accuracy of overprinting.
As for the choice of heat-sealing layer PE, we need to be clear: the boiled bag PE should have better heat-sealing strength and good heat-sealing performance than ordinary PE, and can ensure that the boiled bag is not broken when it is used for boiling. High transparency and other excellent characteristics. In addition to its own characteristics, we must pay attention to the fact that there are no obvious defects when heat sealing the PE, such as the fisheyes, impurities, and crystal points that affect the use. These may cause bubbles or even bubbles on the surface of the boiled bag during production. Penetration of the film results in defective products such as reduced barrier properties.
After the choice of film material, the second thing we consider is the choice of printing ink. The fastness of the ink adhesion of the base film must be considered to ensure the peel strength of the ink part.
In addition, the choice of adhesive is also important. In order to respond to the production requirements of boiled bag packaging, you should choose a boilable adhesive and ensure the degree of crosslinking and curing after compounding.