What are the precautions for the operation of polypropylene spinning machine? 2021/1/23

1. The transmission part of the polypropylene spinning machine should run smoothly without abnormal noise.2. Under normal working conditions of polypropylene spinning machine, the temperature rise of the gear box surface of the screw extruder should not exceed 30℃. The temperature rise of the metering pump gearbox should not exceed 20°C.3. When the ambient temperature of the polypropylene spinning machine is lower than 28°C, the average temperature of the front and back surfaces of the spinning box insulation layer should not exceed 65°C.4. No leakage is allowed at the pipe connection of polypropylene spinning machine.5. The wind speed of the blowing device should be stable, and there should be no violent fluttering or twining of the silk. The wind speed difference rate of the single spinning position on the same level in the ring blowing device should not be greater than 15, and the wind speed difference rate of the single spinning position on the same level in the side blowing device should not be greater than 20.6. The tow channel and the contact part of the tow should be smooth and free of wire.7. The air tightness test of the biphenyl pipeline shall be carried out according to the value specified in the technical document, and no leakage shall be allowed.8. The spinning box shall be manufactured, tested and accepted according to GB 150, and shall be supervised by TSG R0004--2009.9. The temperature difference of the fixed temperature measuring point of the spinning box heated by the heat medium should not exceed 2℃.10. The temperature difference between the fixed temperature measuring points of the electrically heated spinning head should not exceed 3℃.11. The temperature control accuracy of each zone of the screw extruder should be ±2℃.12. The melt pressure control accuracy of the screw extruder should be ±0.3 MPa.13. The metering pump should meet the regulations of FZ/T 92026.14. The spinneret should meet the regulations of FZ/T 92038.15. Electrical equipment and circuits are well insulated, with insulation resistance ≥ 1 Mi2.16. The protective grounding of the metal shell is reliable, and the grounding resistance is ≤0.1 Q.17. The electrical components should be able to withstand the withstand voltage test lasting 1 min. The test voltage is ≥1 500 V. The components that cannot withstand the above-mentioned high voltage must be disconnected when testing.18. The painting of polypropylene spinning machine should comply with the regulations of FZ/T 90074.......

Vietnam's textile and apparel exports may reach 39 billion U.S. dollars in 2021 2021/1/8

Vietnam’s "Invest Online" reported on December 29 that Nguyen Jinchang, vice chairman of the Vietnam Textile and Apparel Association (Vitas), stated that 2020 is the first year that Vietnam’s textile and apparel exports have experienced a negative growth of 10.5% in 25 years. The export volume is only 35 billion U.S. dollars. The US$39 billion in 2019 decreased by US$4 billion. However, in the context of the global total trade of the textile and apparel industry falling from US$740 billion to US$600 billion, an overall decline of 22%, the decline of each competitor is generally 15-20%, and some even drop by 30% due to the isolation policy. The decline in Vietnam's textile and apparel exports is not too large.　　 Due to the absence of isolation and production suspension in 2020, Vietnam ranks among the top 5 textile and apparel exporting countries in the world. This is also the most important reason for helping Vietnam's textile and apparel exports to remain in the top 5 exports despite the sharp decline in apparel exports.The McKenzy report published on December 4, 2020 believes that the global textile and apparel industry will shrink by 93% in 2020. More than 10 well-known apparel brands and supply chains in the United States have gone bankrupt, and the country’s apparel supply chain has about 200,000 People are unemployed.　　 At the same time, because production has not been interrupted, the market share of Vietnam's textile and apparel continues to grow, reaching the level of 20% of the US market for the first time, and it has occupied the first position for many months.　　 With the entry into force of 13 free trade agreements including EVFTA, although they are not enough to make up for the decline, they also play an important role in the reduction of orders.　　 According to forecasts, the textile and apparel market may not return to the level of 2019 until the second quarter of 2022 and the fourth quarter of 2023 at the latest. Therefore, it is still a difficult and uncertain year to be trapped in the epidemic in 2021. Many new characteristics of the supply chain have emerged, forcing textile and apparel companies to adapt passively.　　 First of all, the wave of price cuts has filled the market, and simple styles have replaced fashion. This has also led to overcapacity on the one hand, and insufficient new capabilities on the one hand. Online sales are becoming more and more prosperous and intermediate links are reduced.　　 In view of these market characteristics, the highest goal of Vietnam's textile and apparel industry in 2021 is to export 39 billion US dollars, which is 9 months to 2 years faster than the general market. Compared with the high target, the general target is 38 billion U.S. dollars, because the textile and apparel industry still needs government support in terms of stabilizing the macro economy, monetary policy, and interest rates.......

What are the heating methods of polypropylene spinning machine? 2021/1/8

There is a new industry in the electromagnetic heating energy saving transformation that can make good use of electromagnetic heaters, that is, the textile machinery industry. This industry has a polypropylene spinning machine, which has different types: polypropylene FDY spinning machine, polypropylene FDY spinning machine , Polypropylene POY spinning machine, polyester FDY spinning machine, polyester FDY spinning machine, polyester POY spinning machine, polypropylene BCF spinning machine. The most important part of the seed machine is called the heat roller, which needs to be heated to a certain temperature and runs at high speed. The size of the heat roller is different, generally there are diameters Φ160 Φ180 Φ190 Φ210 Φ220. Hot roller length: 200-450mm, speed range: 750-5500m/min, godet surface temperature: ≤240℃-140℃, hot roller surface treatment: hard chrome plating, ceramic plating.The current heating method of the heat roller is power frequency induction heating. Its disadvantage is that the heating ring is easily damaged. The most terrible thing is that it is easy to heat the central shaft of the motor and burn the motor. Shenzhen Xinhuiyuan's newly developed all-digital application is applied to the heating of polypropylene textile machines with high efficiency and energy saving, which completely solves the shortcomings of traditional heating and greatly reduces costs for customers. The main advantages of using Xinhuiyuan electromagnetic heater for the heat roller are:1. Make the surface temperature of the hot roller work area uniform, which can meet the requirements of different industrial yarns and civil yarns FDY spinning process2. The surface temperature of the working area of the hot roller rises rapidly, energy saving is obvious, and the efficiency is greatly improved3. After using the electromagnetic heater, the shaft of the heat roller motor will not damage the motor due to induction heating4. The coil of the electromagnetic heater will not be damaged, reducing maintenance trouble and cost5. The equipment has a complete system, simple structure, stable and reliable operation at high temperatures, and can meet the requirements of different fiber FDY spinning processes. It is an economical and reasonable choice for polypropylene FDY spinning.......

Features of polyester spinning machine 2020/12/26

Polyester POY spinning machine is mainly used for spinning 75-300 denier polyester filament, and the product is pre-oriented yarn (POY). The raw material is polyester chips.Polyester POY filaments are mainly used in clothing, furniture, automotive interiors and other fields.Basic parameters of polyester POY spinning machine:  Finished fineness: 75~300 (denier)  Mechanical speed (large): 3500m/minProcess speed (large): 3200m/minNumber of tows per part: 8, 10, 12Main components of polyester POY spinning machine:1. Screw extruder2. Melt filter3. Spinning box and components4. Biphenyl generator and its pipeline system5. Metering pump and transmission6. Side blowing and oiling system7, the tunnel8. Air conditioning unit9. Winding frame10. Winding machine11. Electric control system: including screw pressure control cabinet, spinning box temperature control cabinet, metering pump, oil pump frequency conversion cabinet, winding frequency conversion cabinet and conventional electrical control systems.......

New year sliding tax adjustment, Zheng cotton trend does not change 2020/12/26

On December 21, 2020, in accordance with the “Adjustment Plan for the Provisional Import Tariff Rates for 2021” issued by the Tariff Commission of the State Council, the 1% tariff rate for imports within the tariff quota of cotton will remain unchanged. With additional imports of cotton, a tentative tariff is implemented in the form of sliding tariffs. In short, the threshold of sliding tariffs in 2021 has been lowered compared with 2020.　　According to common sense, sliding tariff cuts are beneficial to imports, and should be negative for cotton. The actual situation is that Zheng Cotton has rebounded significantly after two consecutive days of callback. It can be seen that tariff adjustments have limited impact on the cotton market. According to the requirements of the document, the purpose of tariff adjustment is to support the accelerated construction of a new development pattern and promote high-quality economic development, not to suppress the cotton market. As we all know, the world has experienced the unprecedented new crown epidemic this year, and various industries have been impacted to varying degrees. The tax rate cut this time will reduce the burden on entities to a certain extent. According to rough calculations, importing one ton of cotton can be cheaper than 200 yuan.The mutation of the British virus has recently brought an impact on bulk commodities, and the cotton market is no exception. However, according to Zheng Cotton’s reaction today, the market has gradually returned to rationality after returning to calm. Currently, downstream orders are improving and cotton raw materials are gradually being restocked. , Cotton prices do not have the basis for a sharp drop, after all, the demand is still there. Of course, don't expect much room for a rebound in the short term. Under the influence of virus mutation in the short term, crude oil is facing greater pressure from the previous high, and it is difficult for bulk commodities to rise sharply in the short term, and continue to maintain a range of fluctuations.......

Can dyeing factories and grey cloth markets catch up with the "last train" of the bull market before the end of the year? 2020/12/11

Recently, the textile market has ushered in a wave of market conditions, and all links in the industry chain have improved, especially in the printing and dyeing market."Recently, the dyeing factory has started to be busy again. I heard that there is a big order that covers half of the tanks of a dyeing factory." A salesperson recently told the editor. It is understood that the dyeing factory is mainly engaged in the printing and dyeing process of nylon and superfine polyester products, and this large order is mainly twill pongee and 290T semi-gloss pongee.Since mid-November, after the textile market ended the double eleven stocking market, the market once fell into a low-level shock and the market stalemate. During the period, although individual product orders were stable, the entire market has not been a big wave.Recently, with the good news of vaccines, after the raw materials took advantage of the rising prices, downstream buyers were driven to get goods again, and the market sentiment rebounded again, but compared with the previous wave of market, it was still slightly inferior.It is understood that there are not many hot-selling products in this round of market. At present, the orders for elastic fabrics, pongee, polyester taffeta and other fabrics used in autumn and winter in the dyeing factory are still performing well. The first dyeing factory's daily inventory volume is basically acceptable. It is stable at about 800,000 meters, which is about 20-30% higher than the previous period.Some traders said that the number of T400 orders has risen significantly recently, and some orders have to be scheduled even if they are finalized, which has caused some small orders to be shipped again. "Large customers package cylinders, package setting machines, small customers can't speak at all, they can only wait for the plan to line up." He said.It is understood that a salesperson of another printing and dyeing company said that among the fabrics recently purchased, elasticity accounts for a large proportion, mainly foreign trade orders. "At present, the delivery time of Sifang Bullet is about 15-20 days. This wave of market is expected to keep us busy until after Christmas!"As the downstream of the industrial chain, there is always a wave of market conditions before the Spring Festival in previous years. Many domestic and foreign customers will place orders in advance to avoid the traditional Spring Festival holiday. This year, due to the combined impact of the epidemic and the market, the market entered the Spring Festival vacuum period or came earlier than in previous years, which has also prompted this wave of orders to be placed in a concentrated manner, resulting in a recent good phenomenon in the printing and dyeing side.In addition to the good performance of the printing and dyeing market, the grey cloth market has also improved from the previous period. According to some manufacturers, certain orders have been placed for apparel fabrics for spring and summer or autumn and winter recently. Although the order volume is still shrinking compared with the same period in the previous year, the increase in inventory in the factory presses the "pause button."This year, due to the tighter payment than in previous years, many intermediate traders have started cash transactions and are not easy to let customers owe money to get goods. "Recently, we have started to take the goods in cash, and we finished it earlier. I heard that there are customers in Keqiao who have lost contact. We dare not owe money to go out casually," said Mr. Yang, who is a grey cloth trader. It is also significantly more than last week, and can walk about 40,000 meters of goods every day."Of course, the impact of the epidemic on the industry has not dissipated, and the entire grey fabric market can only be said to be warming up locally. There are still many bosses who say that recent orders have not improved much, and the execution of orders on hand ends at the end of the month.Judging from the current orders on hand by most weaving mill bosses, the proportion that can be achieved in mid-January next year is not large. Most companies have orders on hand until the end of December, and a few companies with fewer orders have begun to make inventory."In previous years, foreign trade customers will rush to confirm their orders before Christmas, and they will also usher in the holiday. This year this rule should not be broken. However, the overseas epidemic situation is still serious recently, the recovery of terminal consumption is weak, and the order volume of customers is still not as expected. "Trader Mr. Wang said.In addition, there is news in the market that migrant workers will return to their hometown early in 2021 for a peak shift, and the market holiday this year may be earlier than in previous years.Various signs indicate that the textile market after Christmas may gradually cool down, and the continuity of this wave of market is still a big greeting.......

The role of polypropylene spinning machine 2020/12/11

The function of the polypropylene spinning machine is to make the melted melt enter each spinning box through the bend, and be ejected from the spinning head by the metering pump, and be condensed to solidify into filaments, and continue to be cooled through the tunnel and finally wound into shape. The polypropylene spinning machine is mainly composed of spinning control system, biphenyl boiler control system, winder control system and so on.The spinning control system of polypropylene spinning machine mainly includes metering pump transmission control, oil pump transmission control, and some on-site temperature and pressure signal collection records. Each spinning position in the field is equipped with a button box, and the start and stop of the metering pump and the oil pump are controlled by the on-site button, so the frequency conversion enable signal is generally given by the terminal.Since both the metering pump and the oil pump are synchronous motors, the frequency conversion only requires general open-loop control. The difference between the control of the metering pump and the oil pump is that the metering pump is usually driven by a frequency converter, while the oil pump is driven by a frequency converter.......

What are the characteristics of polypropylene spinning machine? 2020/12/4

Main features of polypropylene spinning machine:1. Can be used in the field of renewable materials2. It can be heated by high-frequency hot roller, with low energy consumption and uniform temperature of the hot roller3. Side blowing wind speed is uniform and stable4. Polypropylene spinning machine runs stably, has low failure rate, simple and convenient operation and maintenance......

India made the second anti-dumping sunset review final ruling on China-related fully oriented yarns, fully drawn yarns, spinning drawn yarns and polyester flat yarns 2020/12/4

On November 23, 2020, the Ministry of Commerce and Industry of India issued an announcement stating that all fully oriented yarns, fully drawn yarns, spun drawn yarns and polyester flat yarns originating or imported from China and Thailand (All Fully Drawn or Fully Oriented Yarn/Spin Draw Yarn/Flat Yarn of Polyester) made the final ruling of the second anti-dumping sunset review, suggesting to continue to impose a five-year anti-dumping duty on the products involved in the case in China, with a tax amount of US$547/metric ton; at the same time, it is not recommended to continue to levy the products involved in the case in Thailand. Anti-dumping duties. This case involves products under the Indian customs code 5402. The involved products do not include low melting point (110℃～170℃) fully oriented yarn, fully drawn yarn, spinning drawn yarn and polyester flat yarn.On May 6, 2008, India initiated an anti-dumping investigation on fully oriented yarn, fully drawn yarn, spun drawn yarn and polyester flat yarn originating in or imported from China, Thailand and Vietnam. On September 29, 2009, India made a final anti-dumping ruling on fully oriented yarn, fully drawn yarn, spun drawn yarn and polyester flat yarn originating in or imported from China, Thailand and Vietnam. On March 24, 2014, India conducted the first anti-dumping sunset review investigation on fully oriented yarn, fully drawn yarn, spun drawn yarn and polyester flat yarn originating in or imported from China, Thailand and Vietnam. On September 22, 2015, the Indian Ministry of Commerce and Industry made the first anti-dumping sunset review final ruling on fully oriented yarn, fully drawn yarn, spun drawn yarn and polyester flat yarn originating in or imported from China, Thailand and Vietnam : As India did not continue to import the products involved in the case from Vietnam during the entire damage investigation period, it is recommended to terminate the anti-dumping measures against the products involved in Vietnam; however, it is recommended to continue to impose anti-dumping duties on the products involved in China and Thailand. On October 21, 2015, India decided to continue to impose five-year anti-dumping duties on the products involved in China and Thailand, with the tax amount ranging from US$256 to US$547 per metric ton in China and US$57.78 to US$248.63 per metric ton in Thailand. On April 15, 2020, the Ministry of Commerce and Industry of India issued an announcement stating that in response to an application submitted by the Association of Synthetic Fibre Industry (Association of Synthetic Fibre Industry) in India, fully oriented yarns and fully drawn yarns originating from or imported from China and Thailand , Spinning drawn yarn and polyester flat yarn for the second anti-dumping sunset review investigation.......

What are the main advantages and characteristics of polypropylene spinning machine? 2020/11/27

Main features of polypropylene spinning machine:1. Can be used in the field of renewable materials2. It can be heated by high-frequency hot roller, with low energy consumption and uniform temperature of the hot roller3. Side blowing wind speed is uniform and stable4. Polypropylene spinning machine runs stably, with low failure rate, simple and convenient operation and maintenance......

Mechanical principle of spinning machine 2020/11/27

The spinning machine uses the friction transmission method to form the fiber-forming polymer solution or melt into the filament. The silk cake is automatically switched through the automatic switching mechanism. The lifting cylinder supports the friction roller device and the grooved roller device for vertical lifting movement. All electrical devices are centrally controlled by a programmable controller, which effectively guarantees stable tension, good forming and high production efficiency when the cake is formed. It is a key equipment in the production process of spandex spinning.Mechanical principle of spinning machineThe spinning machine is between the original yarn guide and a drafting machine. The tow passes through an oil immersion tank under low tension, and the oil in the tank is heated to 40-50°C, so that the tow can be uniformly drawn for continuous drawing. To ensure the smoothness and cohesion of the tow, and to keep the temperature of the tow constant.Then three pieces of silk enter a drafting machine, and the drafting roller of the drafting machine plays the role of guiding and fixing the position of the tow during the drafting process. After leaving a drafting machine, the tow enters the water sluice and immediately enters the subsequent wet drafting state. The tow is in the second drafting zone, that is, between the second drafting machine and the tension heat setting machine. The sizing treatment is obtained at high temperature, and the complete orientation of the macromolecular structure is obtained. The two-pass drawing completes about 15% to 20% of the draft ratio. This process allows the fiber to obtain the characteristics of high strength, low elongation, low shrinkage and high modulus.The tension heat setting machine consists of 18 large cylinders, followed by three drafting machines. The tension heat setting machine is divided into three zones that can be started independently. This means that the shrinkage and relaxation levels can be adjusted appropriately between these four-roller heat setting zones. If the wool type low modulus products are produced, there is no need for intense heat setting, and the tow can pass through these large, unheated circles. cylinder.The cooling work of the spinning machine is completed by the tow cooler, and the oil sprayed on the tow will take the maximum amount of heat away from the fiber due to steam. Then the tow enters the cutting machine under uniform tension and is cut to the required length. The cut fibers are sent to the baler and finished into finished products.......

At the end of the year, there is no change in the market. The opportunity to rise is next year 2020/11/27

The China Cotton Association issued a report on the progress of picking and delivery. As of the end of October, the country’s picking progress was 91.82%, 2.94 percentage points faster than the same period last year; the delivery progress was 85.42%, 8.30 percentage points faster than the same period last year; the average transaction price was 6.44 yuan/kg. A year-on-year increase of 27.52%.　　 At present, seed cotton picking is coming to an end, and the average price of seed cotton is basically locked. According to the above statistics, the average price of seed cotton this year is significantly higher than last year, leading to a significant increase in the cost of lint and strong support for the disk. From September to November 2019, Zheng Cotton's fluctuation range was maintained at 1,2000-13200 yuan/ton. This year's fluctuation range was significantly higher, mainly due to the support of the cost and the short-term benefits of the downstream. When the market risk factors have not yet been fully released , Will cotton prices have upward momentum in the future?　　 Market analysts believe that cotton remains range-bound, but the long risk is significantly less than the short risk. Now the cotton price fluctuates at a low level near the cost line. Even if there are bad news and the downside is limited, the risk can be well controlled. On the contrary, if the low position is short, once the epidemic is under control and the market risk factors are released, there will be more room for cotton prices to rise.　　 The person also said that as the time for the vaccine to come out is approaching, the economies of countries severely affected by the epidemic will gradually recover, and economic and trade exchanges between countries will become more frequent, which will help boost market consumption. There is a high probability that Zheng Mian will not perform well this year, because under the background of sufficient supply and declining demand, the rise is weak. There should be a good performance next year, especially under the influence of multiple factors such as consumption and weather. At this stage, for enterprises, cotton prices can fall down to purchase resources at a price, and prices rise to stay on the sidelines, so as to ensure that the cost of raw materials remains low.......