Today our topic is about the injection process of safety shoes.   Safety Shoes Safety shoes are a general term for Safety Shoes and protective shoes. They generally refer to footwear worn in different workplaces to protect feet and legs from foreseeable injuries.   General safety shoes are composed of these accessories, including outsoles, midsoles, insoles, toe caps, leather, eyelets, sandwich mesh, shoelace or other fabrics.   Injection Molding Injection molding refers to a model with a certain shape, which is formed by injecting molten colloid into the mold cavity through pressure. The process principle is: melt the solid plastic at a certain melting point, and inject it into the mold at a certain speed through the pressure of the injection machine. Inside, the mold solidifies the plastic through water channel cooling to obtain the same product as the designed mold cavity. It is mainly used for the molding of thermoplastic plastics and can also be used for the molding of thermosetting plastics.   Injection pressure process, also known as injection process. The base making process is roughly similar to the molding process. It is characterized by high production efficiency and low cost, and plastic is resistant to oil and insulation. The injection molding process is suitable for the production of shoes for civilian, travel, and labor protection use. Pressing shoes are relatively stronger. Shoe pressing uses strong pressure to press the upper and sole together. The pressure of normal movement cannot exceed this pressure, so it is not easy to open the mouth. The injection process was successfully developed by the German DESMA company in the 1970s and used in footwear production. After decades of technological improvements and upgrades, computer-controlled automated production has been achieved. It is currently the most advanced shoemaking process, and is used in internationally renowned sports shoes such as PUMA and ADIDAS. Manufacturers have successively purchased DESMA injection shoe machines for the production of sports shoes and running shoes to reduce the weight of the shoe body, increase the rebound and anti-seismic effect, make it sturdy and durable, and improve the friction coefficient. Since the whole process of DESMA injection shoe machine production is controlled by computers, some of the unstable factors caused by manual control of the injection molding process have been changed, so the quality has been improved again. The DESMA injection shoe machine uses high temperature and high pressure to inject the PU/TPU original solution from the bottom of the shoe into the outsole mold, and tightly adheres to the leather-polished upper and foot. Through the action of high pressure, the PU/TPU original solution penetrates into the cortex. It achieves a firm and non-degumming effect, and uses a secondary injection process to improve the outsole's wear resistance, anti-skid, shock-resistant cushioning, and improve wearing comfort. Injection Process The complete injection process includes preparation before molding, injection process and post-processing of the product. 1. Preparation before molding In order to make injection molding proceed smoothly and ensure product quality, a series of preparations such as raw material pretreatment, barrel cleaning, preheating inserts and selection of release agents are required before production. 2. Injection process The injection process generally includes: feeding-plasticizing-injection-cooling-demoulding. 1) Adding ingredients: Since injection molding is an intermittent process, quantitative (constant volume) feeding is required to ensure stable operation, uniform plasticization, and ultimately obtain high-quality plastic parts. 2) Plasticization: The molding material undergoes heating, compaction and mixing in the barrel of the injection machine, and is transformed from a loose powdery or granular solid state into a continuous homogenized melt. 3) Injection: The plunger or screw starts from the metering position in the barrel and applies high pressure through the injection cylinder and piston to push the plasticized plastic melt through the barrel. The front-end nozzle and the pouring system in the mold quickly feed into the process of closing the mold cavity. Injection can be subdivided into three stages: flow filling, pressure maintaining and feeding, and reverse flow. 4) Cooling: When the plastic in the pouring system has frozen, it is no longer necessary to continue maintaining pressure, so the plunger or screw can be returned to remove the plastic in the barrel. The pressure of the material melt is increased, and new material is added. At the same time, cooling media such as cooling water, oil or air are introduced into the mold to further cool the mold. This stage is called cooling after the gate freezes. In fact, the cooling process begins when the plastic melt is injected into the mold cavity, and it includes the period from mold filling, pressure holding to demoulding. 5) Demolding: The mold can be opened after the plastic part is cooled to a certain temperature, and the plastic part is pushed out of the mold under the action of the ejection mechanism. 3. Post-processing of products 1. Annealing: eliminate residual stress; 2. Humidity adjustment: Stabilize the color, performance and size of plastic parts. The essentiality for a high quality pair of Safety Shoe could not be emphasized more especially for industrial employees. In extreme operations, the feet plays a vital role in productivity & efficiency of work.With this in mind, Injection Safety Footwear are imperative for operations for the reason that that it provides the needed security, safety, flexibility & comfort for the feet and at the same time they are most apt for agile movements. These aspects make the Injection Safety Footwear pivotal in Safety Shoe making. The Injection safety footwear are created from a unique last. The last is the form in which the shoe gets its shape as well as fit. Computer aided design redefines the manufacturing and creates the final layout or pattern of last to ensure that it not only functions well but feel very comfortable all day long. A good structure aids in keeping the feet comfortable and safe. In today’s modern age, the need for highly advanced safety shoe with higher overall performance is more in demand than almost a decade ago.. The computer technologies help in giving the most accurate and capable safety shoe design so that it withstands all weather conditions & performs to user’s satisfaction. The Injection safety footwear also demands the most advanced and durable material to ensure superior performance. Since the shoes enclose the feet, moisture accumulation could occur and that is why a highly reliable lining is used to keep the moisture away from the feet. Good quality leather as well as nylon does the trick to avoid moisture retention. The materials and the structure also provide the essential stability and anti slippage of the foot. If the shoe does not have a reliable stabilizer, the user can experience fatigue and it could consequently result to slippage and of course, injuries.   I hope this blog can give you a better understanding of what safety shoes are and what the injection process is.   For further information or inquiries regarding custom tactical gear solutions, please contact: Partner Supply Chain Management Co., Ltd Address: Room 406, Building No.30, Tian'An Headquarter Center, No. 555 Panyu Avenue North, Panyu District，Guangdong,China Email: sales@pentyegroup.com Website: https://www.partnertactical.com/