As the most advanced glass bottle manufacturer in China, misa glass is the first to use lightweight glass bottles and encourages more glass bottle manufacturers and food and beverage companies to use lightweight glass containers.reducing glass waste and fuel consumption for glass products transportation.
But,existing manufacturing,bottling,transportation and other processes are more traditional and more designed with more solid glass containers,not applicable to this new type,sustainable design.light glass,whether it is empty or full,at the container factory,on bottling plants and delivery trucks,all increase the risk of broken glass.
so the lightweight of glass packaging is under certain conditions of guaranteed strength.reduce the weight ratio of the glass bottle,the aim is to improve its greenness and economy.the weight ratio is a glass bottle that evaluates the same volume.or the size of the weight of the glass jar depending on the purpose,the weight ratio of the lightweight bottle is generally between 0.15 and 0.8.the weight of the lightweight bottle is small,the bottle wall is relatively thin,light weight.lightweight bottles have an average wall thickness of 2 to 2.5 mm.reduce the weight ratio of glass packaging containersmainly by reducing the wall thickness.
But,keep it in a thin wall higher compressive strength is very difficult,must go from design to productionstart with all aspects of the whole process,modified by glass components,reasonable structural design,correct process arrangement,effective production process indicator control,effective surface treatment, etc.strengthening treatment measures to achieve a small wall thickness,high intensity.
The following will introduce the lightweight glass bottles production process control
1, do the ingredients work
Doing the ingredients is the first step to achieve lightweight production
Formulation design of raw materials and batch preparation process,raw material composition, particle size, moisture,batch uniformity,Quality of cullet and uniformity of addition both have a direct impact on product quality.a stable formula must be implemented for dosing work.develop and strictly enforce raw material standards,the preparation process of the batch material is institutionalized.
2, the melting process
The melting process is to ensure the quality of the glass packaging.
It is also the key link in the greenization of glass packaging.the glass melting process can be roughly divided into silicate formation,the glass is formed, clarified, homogenized, and cooled in five stages.the melting process uses continuous operation.these five stages are carried out in different parts of the furnace.In order to control the exact melting temperature in sections.The stability of the kiln operating process specifications is critical.
3, molding control
Effective molding control is to achieve the desired molding effect and uniform wall thickness guarantee
Glass liquid process for producing glass products can be divided into two stages of forming and shaping.molding and shaping are continuous,during the molding process,need to control the viscosity and temperature of the glass,and heat transfer to the surrounding medium through the mold.glass containers usually from 3 characteristic temperature values to control the forming operation:softening temperature, annealing temperature and strain point.different products,it is the key to determine reasonable parameters through experiments.advanced bottle making,feeding and heating system and adopt advanced molding process is to obtain a uniform wall thickness,a fundamental guarantee for achieving lightweight.
4, eliminate the residual
Implement effective annealing,Eliminate harmful residual stress annealing of glass bottle or glass jars is to eliminate or reduce the residual stress in the glass heat treatment process to the allowable value.any glass product during processing there are residual thermal or permanent stresses.in order to eliminate these thermal stresses,need to heat the glass to the annealing point keep warm and soak,adjust the structure inside the glass,stress relief.