Ten year old factory focuses on production quality assurance

Quanzhou sonic Machinery Co., Ltd. takes the platform and equipment manufacturing of shoe-making industry as the main business body, always takes "making walking easier" as its own responsibility, implements the business philosophy of "altruism, integrity, win-win, persistence and cooperation", and strives to provide customers with reliable products and services with high quality and low price, as well as excellent development platform for employees.
The company is a national high-tech enterprise and a science and technology-based enterprise in Fujian Province. It is a Youth Innovation and growth enterprise board enterprise in Fujian Province. The company code is 683131, which is rated as 2a by the national business credit rating. It has passed ISO9000 and CE certification, won the winning prize of the third China Innovation and entrepreneurship competition, and is the governing unit of Quanzhou CNC generation industrial technology innovation strategic alliance. It has 30 years of experience More than national patents, including 5 national invention patents.



Main products for customers: tr blow molding machine, PVC injection molding machine, TPU sole molding machine.


The national high-tech enterprise and Fujian science and technology-based enterprise are the Youth Innovation and growth enterprise board enterprises in Fujian Province......



06 -09

1. Introduction of Hot Melt Adhesive Gangbao:    Commonly known as Gangbao, scientific name: Hot-melt glue Gangbao, is a new type of high-quality material for shoemaking. Using low-temperature hot-melt adhesive Gangbao to replace the traditional Shuigangbao as the front lining and back cover of the shoes, the production efficiency is high, the shoes are upright and round after shaping, not easy to deform, the comfort and beauty of the shoes are greatly improved, and the shoes are 100% environmentally friendly. Type product.    2. Properties of hot melt glue port:    1. Color: white, blue, green, gray, or customized according to customer requirements.   2. Thickness: 0.2mm-2.0mm Packaging: Roll or sheet. 3. How to use the hot melt adhesive port treasure: the bonding interface temperature of all materials is 100-120 degrees, and the activation temperature is 70-90 degrees. If you use a hot/cold post-sizing machine, the hot mold temperature should be set to 125 -135 degrees, hold for 7-15 seconds (the temperature and time settings need to be adjusted according to the change of the fabric material and the inner material); if the California-style lasting method is used, the temperature of the heating activation system of the molding line should be set 110-125 hold for 7-15 minutes.    3. The current situation of hot melt glue port treasure:    Every shoe factory is using Gangbao products, and there are dozens of manufacturers specializing in Gangbao in mainland China. However, the domestically produced Gangbao are all made of sheet material. After the shoe factory takes the Gangbao back, it will have to cut and trim the edges, and must meet various design processing or sewing requirements, and take into account the appearance of the shoes. Aesthetics and wearing comfort require high requirements for various processes, as well as high technical requirements for operators. Caused certain operation difficulty and material loss.


06 -15

What is the difference between chemical film Gangbao, Shuigangbao and low temperature hot melt glue Gangbao?    The main difference is: 1. The material of the low-temperature hot-melt adhesive Gangbao film is memory elasticity after setting. In the production process, it pays more attention to hardness and toughness, waterproof and non-deformation. The traditional chemical Gangbao is hardened after setting, and it will soften after a long time. Deformation; 2. Gangbao film is generally used between shoe fabrics and linings to shape the shoes. The materials used in traditional leather pulp water and chemical films Gangbao are a bit like cardboard, using soaking softening and foaming. Solvent (toluene) softening method, the product is thicker, the molding time is long, and the elasticity is very poor; while the low-temperature hot melt adhesive film has high hardness and strength, good toughness, and can meet the requirements of heat resistance and cold resistance at the same time, and can be compatible with Other additives are well integrated, have a wide range of uses, strong adhesion, and can adhere to many different substrates.   3. Shuigangbao needs sizing in the application process, which requires many operating procedures, time-consuming and laborious, and not economical;   The low-temperature hot-melt adhesive Gangbao has high melt viscosity, does not require sizing, and is simple to operate. It can be bonded directly through the oven, completely breaking the traditional complex operation, saving time and effort, and conforming to market economic benefits. 4. The traditional skin slurry water port treasure and chemical tablet port treasure are harmful to the body, irritating to the skin and mucous membranes, and have side effects on the central nervous system. The low temperature hot melt glue port treasure is non-toxic and tasteless in the production process and belongs to the international Sexually recognized environmentally friendly materials.    China is the world's largest footwear manufacturing base. In the future, the development of China's footwear industry will inevitably move from the low-end market to the mid-to-high-end market, and product upgrading is an inevitable trend. With the progress of society and the continuous improvement of people's living standards, on the one hand, people's demand for shoe materials will continue to increase, on the other hand, people will pay more attention to environmentally friendly, energy-saving, and higher value-added shoe materials. At present, as the most important new material for shoemaking, low-temperature hot-melt adhesive Gangbao will continue to increase in demand. It is an inevitable result that low-temperature hot-melt adhesive Gangbao will replace the traditional chemical film Gangbao in the market.


06 -15

1. The purpose of low temperature hot melt glue Gangbao:    is suitable for all high-end leather shoes, riding boots, women's shoes, children's shoes, work shoes and all kinds of sports shoes.   Specifications: the thickness is 0.4mm~1.5mm, there are three colors of brown, white, and aqua (light blue)    Thickness specification Applicable scope   0.4mm±0.05mm General light men's shoes, women's shoes, children's shoes and casual shoes   0.6mm±0.05mm general light men's shoes, women's shoes, children's shoes and casual shoes   0.8mm±0.05mm General light men's shoes, women's shoes, children's shoes and casual shoes   1.0mm±0.05mm Lightweight casual shoes, men's shoes, women's shoes, children's shoes and boots   1.2mm±0.05mm Men's shoes, women's shoes, boots, hiking shoes and special purpose shoes   1.5mm±0.05mm Men's shoes, women's shoes, boots, hiking shoes and special purpose shoes    2. Development prospects: Low-temperature hot-melt film is commonly known as low-temperature hot-melt glue Gangbao, low-temperature Gangbao; the most advanced front lining and back sleeve materials, while having the high elasticity of rubber and the plasticity of thermoplastic materials; the viscosity remains unchanged after repeated use; its products will also be softened by heating Non-sticky characteristics. Very low operating temperature, suitable open time, and high bond strength characteristics. The finished shoes are beautiful in shape, not easy to deform after forming, and have excellent resilience, excellent weather resistance and abrasion resistance, and the material is green and environmentally friendly. It does not produce creases and water chestnuts during shaping, reduces product defect rate, has good adhesion to various materials, and does not need to be coated with adhesive. It saves energy and has excellent operability.


07 -08

1.What is vulcanization pressure?    Vulcanization pressure, I think it is equal to the pressure in the cavity, it should be reminded here that the unit of this pressure should be MPa, not kN. A more accurate term should be called pressure, but many people call it more pressure.    is just called stress. The reason why it is called pressure is because it is related to area, which will be explained later. In the vulcanization process, the vulcanization pressure can be equal to the injection pressure (injection) pressure, or the expansion pressure of the rubber   Power can also be equal to the reasonableness of the two. This is determined according to the specific process.   2. What is the relationship between vulcanization pressure and clamping force and clamping force?    The clamping force must be greater than the vulcanization pressure, so as to ensure the pressure when the rubber is vulcanized. This is basically a theoretical value (regardless of how it is written on the equipment data). The clamping pressure is an application value, usually the clamping force multiplied by one    coefficient (usually between 1.2 and 1.5). That is to say, when the mold pressure (gauge pressure) is 21MPa, the clamping pressure may only be 16MPa.   3. What is the relationship between vulcanization pressure and injection (injection pressure) pressure?   In the early stage of vulcanization, injection (injection pressure) molding is used (mold filling is more accurate and more appropriate). When the injection (injection pressure) is not completed to just completed (prerequisite, the injection volume must be greater than the cavity volume plus the auxiliary injection volume)   Vulcanization pressure = injection (injection pressure) pressure. With different processes, the injection (injection pressure) pressure may peak and then drop to an equilibrium value. As the vulcanization progresses, the rubber will expand when heated.   Vulcanization pressure = injection (injection pressure) pressure + rubber expansion force. Someone may ask: In the later stage of vulcanization, if the clamping force is large enough, will the rubber expansion force push the injection piston back? The answer is usually no, because the rubber is vulcanized After    expands, the friction with the runner makes it enclosed in the mold.    4. How to calculate and set the pressure parameters of the equipment?   In simple terms: For a flat vulcanizer, vulcanization pressure = equipment gauge pressure x mold clamping cylinder piston area / product rubber part maximum projected area. According to the calculated vulcanization pressure, forward or backward calculation, select equipment tonnage    and pressure parameters. For injection (injection pressure) machines, the injection (injection pressure) pressure must also be checked.   Methods as below:    1. Confirm the piston area of ​​the injection (injection) cylinder and the cross-sectional area of ​​the injection (injection) plunger cylinder.   2. Injection (injection pressure) pressure = injection (injection pressure) piston area × injection (injection pressure) gauge pressure   3. Injection (injection pressure) piston pressure = injection (injection pressure) pressure / injection (injection pressure) piston area   4. Approximately calculate the cavity pressure according to Pascal's law = the pressure at the injection (injection) piston / the maximum projected area of ​​the rubber part of the product.    5. Comparison of cavity pressure and vulcanization pressure. The cavity pressure must be less than the vulcanization pressure. The tonnage and pressure parameters of the equipment can be selected based on the positive and negative calculations of the above steps.    Here is an example:    Upper cylinder diameter 310, upper cylinder area 75438.5 Upper cylinder gauge pressure (MPa) 15 Maximum gauge pressure (theoretical value) 12.76047 Actual gauge pressure setting 10.20838    Piston diameter 150 Piston area 17662.5 Piston pressure 64.06667 Maximum piston pressure 54.5014 Projected diameter 267 Projected area 55961.865    cavity pressure 64.06667 cavity pressure 3.58529 maximum cavity pressure 54.5014 main cylinder diameter 430 main cylinder area 145146.5 main cylinder gauge pressure (MPa) 21    Main cylinder pressure 3.048077

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