Take bread and cake as an example. Bread and cake are popular foods for consumers, but they are prone to aging, and are easily infected by microorganisms and spoiled. So, how to prevent the mold and mildew problem of bread and cake? We know that the key control points of high-moisture products such as bread and cake are: baking, cooling, and packaging. These three key links. The baking process is actually a sterilization process. When the product is just out of the oven, due to heat radiation, a thermal protective layer will be formed around the product. Generally speaking, fine dust cannot fall on the product. At the same time, due to the very high temperature High, even if it falls, it is not easy to survive. According to production practices, the hygienic condition of the workshop during production is uncontrollable! The reasons are roughly as follows: 1. The floor layout of the workshop is unreasonable; in many small and medium-sized enterprises, the mixing room, the baking room and the cooling room are not completely separated, which causes a large amount of air containing flour particles to fly around while stirring; the flour particles contain a large amount of mold and flour particles Can it fall on the product without mold? 2. The mechanical equipment can not meet the requirements of sterility; especially the ovens (boxes) now basically have the doors open on one side, and they are not designed according to GMP specifications at the time of design. From the perspective of quality management, this equipment guarantees Quality is lacking! 3. The clean area is not clean; if it is not completely isolated, there is no essential difference between the clean area and other areas from a microbial perspective. In addition, the production management is sometimes not in place, and the debris of the dropped products will become a source of transmission due to contaminated mold. This point is that manufacturers with purification workshops must also pay great attention! If a company with a purification workshop still has moldy products, more than 90% are due to this. 4. Production technology is not enough; production technology mainly refers to the usual production management and operation technology, such as sanitary management before and after production, sanitary management during production, and sanitary control procedures and implementation. 5. The formula is unreasonable; when manufacturers use composite preservatives, the proportion of salt, acid, sugar, and oil in the formula must be adjusted to achieve synergistic effects. 6, the management of inner packaging materials: is to be sterilized to a degree of sterilization, generally sterilization with ozone generator is the best. Therefore, food production workshops must meet these standards through purification, which is why more and more people choose to purify. Welcome to visit www.wonclean.com. Devoted in Clean room partition systems,cleanroom ceiling grid system and etc.
Now the competition in the clean room industry is becoming more and more significant, and the clean room engineering industry is gradually changing in three directions.Gradually transform into energy-saving development. First， change from price competition to value competition Nowadays, electronic products are also developing into miniaturization and functionalization, so the reliability requirements of components are getting higher and higher.Then, the electronic information manufacturing industry will be more stringent on the various requirements of clean room standards. In the production process, even trace contamination may cause damage to components and products, which will directly affect the company's benefits.Therefore, the technological development of the electronic information industry promotes the project of clean room from price competition to technology competition. Second，Energy conservation becomes an important goal Clean room project is actually an important energy consumer in China, his consumption of energy can even reach the general office 10 to 30 times.Therefore, many companies will carry out related maintenance on the energy consumption of clean rooms, and suggest to reduce the energy consumption as much as possible.This means an increase in profits for companies.Therefore, the energy conservation of clean room is very important. Third, To advanced clean room technology development Now belongs to the information age of Information, want to stand firm in the society, we must master high-end technology.And air molecular pollution is now a concern.Therefore, the clean room gradually develops to the high-end clean technology, and studies air molecular pollution step by step.For its future development prospects, there is a great help.
At present, there is a great demand for polyurethane sandwich panels in the market, but the huge market for polyurethane sandwich panels is mixed, and the quality of polyurethane sandwich panels is uneven, resulting in the price of polyurethane sandwich panels being also different, but many customers come up to ask how much polyurethane sandwiches are. I. Influencing factors of the lowest price per square meter for polyurethane sandwich panels: fire protection grade of core materials Polyurethane composite panel is divided into three grades: B1, B2 and B3. The amount of black material is the key factor to determine the fire protection level of polyurethane composite board. The more the amount of black material used, the higher the fire-proof grade of polyurethane composite board; conversely, the lower the fire-proof grade of polyurethane composite board. Prices of different fire prevention grades are also different. The higher the fire prevention grade, the higher the price. 2. The Influencing Factors of the Minimum Price of Polyurethane Composite Plate for One Square Meter: Upper and Lower Steel Plates Polyurethane sandwich panel has two layers of steel plate. The price of upper and lower steel plate is affected by thickness,PU sandwich panel manufacturer, galvanized content and other factors. The higher the requirement of upper and lower steel plate, the higher the price will naturally be. 3. Influencing factors of the lowest price per square meter of polyurethane composite board: specification of polyurethane sandwich Polyurethane sandwiches have a width of 500 mm to 1000 mm, a thickness of 50 mm, 75 mm, 100 mm, 120 mm, 150 mm and so on. The price varies with the specifications. 4: Influencing factors of the lowest price per square meter of polyurethane composite board: others Affected by core material, upper and lower steel plates and specifications, processing fees, accessories and so on are also part of the factors affecting prices.
Clean room steel doors are widely used in clean engineering fields, such as electronic, biological, pharmaceutical, hospital, food, military, aviation. With a very wide range of applications, it is a new type of sheet metal, which is deeply trusted by customers. Characteristic of cleanroom steel door: 1. A stainless steel anti-collision belt is installed on the waist of the door fan to prevent accidental collision of the cart to damage the surface of the door. 2. SUS304 stainless steel is selected as the edge-wrapping material of the door frame. There is no stress connection around the edge of the door and the door is strong and durable. 3. The medical airtight door is stable, convenient, safe and reliable, which can meet the special requirements of airtight, sound insulation and intelligence. 4. The power beam is made of aluminum alloy profiles. Its unique V-shaped track and circular groove design meet the sealing requirements when it is closed. The overall structure is reasonable and reliable. 5. Rubber seals are installed on all sides of the door pages, filling the gap between the door pages and the door frame. The airtightness is excellent, which can prevent dust and bacteria, reduce air leakage and ensure the gradient distribution of air pressure difference between adjacent rooms. 6. The door frame and the wall remain the same plane, which is more beautiful, and full of integrity. Three neighbors are installed with a seal, and the bottom of the door is equipped with sweeping strips, in line with the use of health requirements of all walks of life. 7. The door is surrounded by an aluminum-gold frame structure. The surface of the cleanroom steel door is made of stainless steel wire drawing panel or high-quality aluminum alloy panel or aluminum-plastic panel or fire-proof panel by high-voltage electrostatic spraying. The inner sandwich is made of injection polyurethane foaming technology. The door panel is the firm, flat and elegant. Cleanroom steel door material: cold-rolled steel panel. Production: The door frame is made of SPCC 1.5mm and the door plate is made of SPCC 1.0mm. Doors and windows (conventional: 400*600) are double-layer toughened glass (right angle window, arc window, outer inner circular window) The core material of the door panel is flame retardant paper honeycomb, and the surface adopts electrostatic spraying treatment (color according to customer requirements). Accessories: Stainless steel hinge, automatic lifting bar, door closer, hardware accessories, split lock, etc.
The importance of building decoration in clean rooms industry mainly manifested in the following two aspects: (1) The impact on comprehensive performance: clean room requires no dust production, dust-free structure, tightly sealed and dustproof. So the decoration of the clean room will directly clean the effect. (2) Influences on cost: Compared with general office buildings, clean rooms are high-cost buildings. Requirements for decorative materials 1. General requirements Smooth surface; The surface has wear resistance; Good thermal insulation; It is not easy to generate static electricity. No moisture absorption, no moisture permeability; Good sound absorption; Easy to process; The surface is not easy to adhere to dust; It is easy to remove the attached dust. The price is cheap. 2. Decoration of the ground (1) General requirements Abrasion resistance; corrosion resistance (acid, alkali, medicine); Antistatic; Fourth, skid resistance; Seamless processing; Easy to clean. (2)Species Double floor The general characteristics are: the ground of a typical vertical one-way flow clean room. The general features are: ground air return, good air permeability, high cost, poor elasticity. Terrazzo floor The general features are: smooth, not easy to dust, good integrity, washable, anti-static, no elasticity. Paint floor The general features are: with the advantages of terrazzo, wear resistance, good sealing, elasticity, complex construction. Material: It is made of epoxy resin, polyester resin and polyurethane resin by adding pigments and hardening agent. The cement label of cement mortar base is no less than 425 #. Coiled sheet floor The general features are: smooth, wear-resistant, slightly elastic, not easy to dust, easy to clean, simple construction, easy to generate static electricity, easy to aging by ultraviolet radiation, because different from concrete expansion system, easy to shell in large areas. Acid-resistant magnetic plate ground The general features are: corrosion resistance, but brittle quality can not withstand impact, complex construction, high cost, suitable for areas with corrosion resistance requirements, and appropriate to use water retaining line enclosure. FRP Floor The general features are: corrosion resistance, good integrity, but the expansion coefficient is different from the base, so it is suitable for small area use, and use fire-resistant varieties. 3. wall surface (1) General requirements Not dirty, easy to clean; Smooth surface; No dust is produced once the surface is peeled off or damaged. Impact resistance; The corner can be treated with arc material or sealing material. (2) Species Advanced plastering Wonzone is one of the best clean room panel suppliers in China providing high quality products, welcome to make an order.
The "China Clean Room Engineer" training was organized by the Clean Technology Branch of the Chinese Electronics Society, the Clean Room Technical Committee of the China Refrigeration and Air Conditioning Industry Association, and the Guangdong Clean Technology Industry Association held from December 27th to 29th, 2018. The training invited authoritative experts in the domestic clean room technology industry, professors Wang Yao, Zhang Liqun, and Cai Jie to give lectures. China's clean room engineer qualification certification is different from China's current technical title evaluation. It is a new technology evaluation system that adopts the internationally popular industry access system. Since 2008, China's clean industry is in line with international standards, and the qualifications of clean room engineers will be recognized internationally. The clean room engineer certificate is a certificate of personal professional and technical qualification level, which is the basis for professionals to engage in the work and application of the clean room industry and Pharmaceutical engineering and is universal across the country.
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