The thickness and thickness uniformity of the finished product mainly depends on the thickness and uniformity of the single-layer film before vacuum packaging bag composite, that is, controlling the quality of the thickness of the single-layer film of the vacuum packaging bag is to obtain the quality of the thickness of the qualified finished product.
Prerequisite.
② vacuum packaging bag film barrier and vacuum packaging bag film thickness is closely related (generally proportional to the thickness of the relationship), good uniformity of the vacuum packaging bag film can obtain uniform and stable barrier.
③ vacuum packaging bag film thickness uniformity directly affects the mechanical tensile properties of the film, thickness uniformity of good vacuum packaging bag film can obtain better printing overprint accuracy and composite quality.
④ composite vacuum bag film of the same inner material, the thickness is higher than the beginning of the heat sealing temperature is high, and vice versa. That is, the composite vacuum packaging bag film with uniform thickness can achieve uniform sealing quality and avoid the phenomenon of localized bad heat sealing.
Most customers take delivery data by square meter, which can effectively control the processing cost of laminated film.
What are the advantages of vacuum food bags?
1. Product features appearance: opaque, silver-white, anti-gloss, with excellent insulation, heat sealing, spin-shielding, high temperature resistance, low temperature resistance, oil resistance, aroma retention; non-toxic and tasteless; softness and other characteristics.
2. Product structure: can be customized according to the requirements of different composite materials and thickness of the product. Storage environment temperature ≤38℃, humidity ≤90%.
3. Product specifications: thickness 0.10mm and 0.14mm, three side sealing, sealing edge 10mm, product specifications scale can be customized according to customer demand.
Food vacuum packaging bags use high insulation raw materials to ensure food safety
Vacuum food packaging bags commonly used in aluminum foil packaging bag advantages.
1, strong air barrier function, anti-oxidation, waterproof, moisture.
2, strong mechanical function, anti-explosion function, anti-puncture and tearing function.
3, high temperature resistance (121 ℃), low temperature resistance (-50 ℃), oil resistance, good aroma function.
4, non-toxic and tasteless, in accordance with the food, pharmaceutical packaging health standards.
5, good heat sealing function, flexibility, high insulation function.
Vacuum food packaging bag in high insulation packaging - commonly used high insulation packaging materials such as aluminum foil, nylon, polyester, polyvinylidene chloride.
New type of high insulation packaging materials (commonly used high insulation packaging materials are aluminum foil, nylon, polyester, polyvinylidene chloride, etc.). With the advancement of food preservation requirements. New high insulation plastic packaging materials have been widely used in foreign countries, the use of high-strength high insulation plastic can not only improve the maintenance of food, and in the packaging of the same amount of food can reduce the amount of plastic. Anti-static vacuum bag on the requirements of high insulation maintenance of processed food and vacuum packaging, inflatable packaging, etc., generally have to use excellent composite packaging materials, and in the multi-layer composite material guess there must be more than one layer of high insulation materials. For example, nano-modified new high insulation packaging materials nano-composite polyamide, ethylene vinyl alcohol copolymer, polyvinyl alcohol and so on. Food packaging bag material must have a high degree of insulation. Oily food requirements have a high oxygen barrier and oil barrier; dry food requirements have a high moisture barrier to ensure the smooth sailing of the packaged food. Fragrant food requirements have a high degree of fragrance; fruit and vegetable fresh food requirements packaging has a high degree of oxygen, carbon dioxide and water vapor permeability. In addition, food packaging materials should also have high tensile strength, tear resistance, impact resistance, excellent chemical stability, not to have any chemical reaction with the contents of food to ensure food safety; others still have a high temperature resistance to meet the high temperature sterilization of food and low temperature storage and other requirements.