Hebei Xiangyi International Trading Blog

Creating glass bottles can be accomplished through one of two different processes, the blow molding process or the pressing and blow molding process. Each process is chosen based on the type of glass bottle being made. All   glass bottles start with raw materials . Silica (sand), soda ash, limestone and crushed glass (recycled glass that can be used in a furnace) are mixed into a specific mixture depending on the desired properties of the bottle. The mixture is then melted in a furnace at high temperatures until it becomes a molten material, ready to be formed.     Glass Forming Method Molten glass droplets are cut by precisely timed blades to ensure that each glass droplet is of equal weight before it enters the forming machine. The weight of the droplets is important to the forming process of each glass container being manufactured. Molded glass is made by gravity feeding the molten glass droplets into the molding machine where pressure forms the neck and basic shape of the bottle. O

    Pick the best rubber stopper   Choose the rubber stopper of the proper size for your container.. A rubber stopper is made such that the leading end is larger than the bottom end. A rubber stopper will be the correct dimension for a flask or test tube if the bottom end is narrower than the opening of the flask or test tube, however the leading end is larger.   Pick the right variety of holes in the stopper. Many rubber stoppers are solid items  of rubber with no holes in them. These are great for dealing with non-volatile chemicals that do not build up stress in a secured container. Certain chemical mixtures have high volatility and also can produce gas pressure that can break a glass flask or test tube. For such combinations, stoppers with holes ought to be used to allow the gas to run away prior to way too much pressure builds. Chemists additionally utilize stoppers with openings if they are utilizing the flask or examination tube as part of a bigger device, such as a distillation

Typically, fluid chemicals are included within opaque containers with screw-on caps, yet drug stores mix chemicals in glass test tubes as well as flasks that do not have strings whereupon to screw a cap. The rubber stopper is the perfect device for plugging these containers.   Purpose The objective of these stoppers is to avoid liquids, as well as in some cases gases, from escaping their containers, as well as  prevent pollutants from entering the containers .   Size Rubber stoppers normally vary in size from size 000 (0.5 inches) to dimension 16 (5 inches) at the top. The tapered bottom end ranges from five-sixteenths to 3.5 inches. Smaller sized stoppers are appropriate for test tubes as well as similar glass wares; larger stoppers are appropriate for flasks as well as beakers.   Shape The standard stopper is cylindrical in shape, with a conical bottom end. Some rubber stoppers include 1 or 2 openings to permit the insertion of pipettes, tubing or examination tools (e.g., a thermomet