Problem Solving in the Production of Aluminum Foil
2016/12/17 17:23:39
With the development of economy and science and technology, people pay more and more attention to food safety. The development of food packaging materials is also changing with each passing day. Aluminum foil as a material of light, low density, high barrier, shading, UV resistance, good moisture resistance, good corrosion resistance, good insulation, long shelf life, good ductility, flexibility and high degree of resource recycling Safe and environmentally friendly materials will become the future of green food packaging choice. Such as forming aluminum foil lunch boxes because of its easy to carry, and now has been widely used in aviation food and large-scale activities, catering supply. The rapid development of the food industry on the production process and industry standards put forward higher requirements. How to choose the right aluminum foil lunch boxes for the production process of lubrication products to ensure higher food safety and production efficiency. Is becoming a number of aluminum foil lunch box enterprises pay close attention to the issue.
The production of aluminum foil lunch boxes there are several processes? What role does the lubricant play in this process?
Aluminum foil lunch box production process can be broadly divided into: Exhibition material an oil one feeding a punching a blanking material testing a six-step process. Production process of aluminum foil by pressing force up to 40-80 tons, the pressure frequency of 1 to 2 seconds, the average production capacity of 20,000 / day aluminum foil lunch box shelf life of 2 years. In this production process. Lubricant plays a very important role, including: cooling, cooling, protection of aluminum foil surface, protection of stamping equipment and mold rust, corrosion and prevent the aluminum foil surface bonding (for pre-coated aluminum foil needs to roll up the situation , Such as aluminum foil coated with oil).
In the aluminum foil lunch box specific production process, for lubricants and lubrication methods have any specific requirements?
In the aluminum foil lunch box specific production process, because of its high pressure, high temperature process. The stability of the lubricant and lubrication efficiency have higher requirements and require a longer lubricant shelf life. Aluminum foil lunch boxes as food containers, food contact with the inevitable, which also the safety of its use of lubricants put forward higher requirements. Lubricants and lubricants specific requirements are as follows:
First, the viscosity and load-bearing properties: aluminum foil lunch box industry requires the viscosity of the lubricant range of 2-150mm / s According to the type of aluminum foil lunch boxes and choose the appropriate size of the different viscosity grades. For example, no wrinkle box, because of its thick aluminum foil, the production process of aluminum foil extension and deformation should choose a larger viscosity of the lubricant, while the lubricant must have excellent lubrication performance, bearing performance. If the choice of improper lubricant, you need to go through a number of smearing lubricant can be achieved without wrinkle boxes of high lubrication requirements.
Second, the temperature performance: the production to go through more than 4O tons of punching pressure and high frequency of pressure. Equipment and mold surface due to friction heat, if not timely cooling, will greatly reduce the equipment and mold life. Equipment and mold the maximum operating temperature is about 70 ¡æ, and the highest temperature of the lubricant should be higher than the temperature of 20 ¡æ or more. That is a reasonable range of heat-resistant lubricant: -10 ¡æ ~ 90 ¡æ.
Third, the amount of aluminum foil coated with different materials, lunch box type and size requirements of the amount of lubricant is also different. The required dose range is 30mg ~ 1g / ©O. If the amount of oil is low, the lubrication is not sufficient to produce the lunch box is easy to deformation, damage or even scrap; the contrary, if the oil is higher, the lubrication is too excessive to produce the meal box easy to stick to the mold surface. Not easy to blanking. Need to stop out, seriously affecting the production efficiency. At the same time, excessive lubrication is also a waste.
Fourth, the oiling method: According to different lubrication requirements of oil painting methods are coated with oil on both sides and two-sided oil two. Single-sided oil applied to a simple type of lunch boxes, aluminum foil deformation of small lubrication requirements of the occasion, this method can be strictly controlled oil coating oil to avoid waste.
Fifth, degreasing (using ordinary lubricants): As the ordinary lubricant does not allow direct contact with food, aluminum foil lunch boxes in the stamping if not using food-grade lubricants must first remove the oil on its surface, it will affect Food color, taste and even its safety. Ordinary lubricant once entered the human body can not be decomposed can not be excreted out, long-term retention in the human body. Such as long-term consumption. Light can cause physical discomfort or severe dizziness can lead to poisoning. But at present, the removal of aluminum foil surface lubricant is still an extremely complex process, and expensive.
The sixth aluminum foil lunch box shelf life: finished aluminum foil lunch box is not directly to the hands of consumers, the need for inventory, transportation, sales and many other intermediate links, especially for many export-oriented lunch box manufacturers only the shipping cycle time- On up to 2 months, so the shelf life of finished aluminum foil lunch boxes must be more than a year. Many European and American countries are two years. This means that aluminum foil lunch box surface lubricant shelf life of at least 2 years. Ordinary lubricants and some companies use olive oil are unable to meet this shelf-life requirements.
Aluminum foil lunch boxes have a very high demand for lubrication, select the appropriate high-performance lubricants in order to ensure a higher production efficiency higher product yield, longer equipment and die life of lower labor costs, lower Energy consumption and thus to bring more business benefits.