When the time came on November 25, Zhao Yi did not receive any relevant news about the reform of the aviation industry. Instead, Jinshajiang from Shenzhen Huansha Textile Company and Zi Yanran from Hualong Garment Company called to tell him that the company had begun to enter the mass production stage of products. , asked him if he wanted to go over and inspect.
Since his subordinates all called him to ask if he wanted to go there, and there was nothing going on now, Zhao Yi certainly wouldn't refuse and told him clearly that he wanted to go over and take a look. Seeing that they might not be able to catch their flight today, they told them to take a flight the next day.
When he got on the plane to Guangzhou the next day, he originally wanted to take the bus to Shenzhen by himself, but Hualong Clothing Company had already sent a Mercedes-Benz to pick him up, which saved Zhao Yi a lot of trouble.
But what Zhao Yi was thinking about while sitting in the car was whether he should own a private jet. When Star Express's regional jets can be officially sold, it seems good to get one and use it as a private jet. In the future, he can also use his own car. Putting it in the cargo hold of an airplane does not need to be like this. If no one is there to pick you up, you have to take public transportation yourself, which is too troublesome.
After the car arrived in Shenzhen, Zhao Yi decided to go to Xiahuansha Textile Company first to check their operation. Huansha Textile Company not only produces raw materials for clothing textiles, but also produces decorative textiles, industrial textile raw materials, leather and other products.
The categories of textiles used are woven fabrics, knitted fabrics and nonwoven fabrics. Mainly used for suits, trousers, skirts, professional wear, casual wear, formal wear, sportswear and outdoor wear. Printing and dyeing patterns mainly include plain weave, plaid, dobby weave, jacquard weave, printing, embossing, horizontal and vertical stripes, various twills, satin weaves, etc. Knitting can be divided into warp knitted fabrics and weft knitted fabrics.
The category of decorative textiles is divided into indoor products, such as carpets, sofa covers, towels, bath towels, tea towels, tablecloths, etc.; luxury products, such as bedspreads, sheets, quilt tops, tents, blankets, fleece blankets, towel quilts, pillowcases, etc.; Outdoor products, such as artificial lawn lights. In addition to their basic practical value, decorative textiles also strengthen the decorative requirements.
Industrial fiber products are divided into sixteen categories, namely: agricultural textiles, civil engineering textiles, transportation textiles, sail textiles, industrial felt and blanket textiles, cord and rope textiles, and filtration and separation textiles. Textiles, construction textiles, packaging textiles, safety and protection textiles, sports and leisure textiles, medical and sanitary textiles, structural reinforcement textiles, synthetic leather textiles, isolation and insulation textiles, and other industrial textiles.
All the above products are inseparable from chemical raw materials from the petroleum industry, except for some that can be made from cotton, linen, silk and wool. This is why Zhao Yi previously asked Jinshajiang to cooperate with Sinopec and PetroChina.
Thinking of this, Zhao Yi wants to set up his own petrochemical company even more intensely. As his industry grows, he seems to be dealing more and more with the petrochemical industry, including aircraft fuel before, textile chemical fiber now, and special materials from Cornerstone Materials Company. These petrochemical products are needed.
In fact, the main raw material of chemical fiber is PTA, which is purified terephthalic acid. It is white crystal or powder at normal temperature, has low toxicity and is flammable. If mixed with air, it will burn or even explode when exposed to fire within a certain limit.
Its manufacturing process involves producing light gasoline (also known as naphtha) from petroleum through a certain process, refining MX (mixed xylene) from naphtha, and then refining PX (para-xylene). Using paraxylene as raw material, liquid-phase oxidation generates crude terephthalic acid, which is then refined by hydrogenation, crystallization, separation, drying, and finally purified terephthalic acid.
Another important raw material is MEG (ethylene glycol), which is also a petrochemical product. Petroleum is processed to obtain natural gas or fuel oil, and then natural gas or fuel oil is used to refine ethylene, and ethylene oxide is generated, and finally MEG can be obtained.
Therefore, the two most important products, PTA and MEG, are both derived from petroleum. Think of gasoline and kerosene as nothing more than accessories in the current petrochemical industry.
PTA is one of the two important organic raw materials and is widely used in various aspects of the national economy such as chemical fiber, light industry, electronics, and construction. At the same time, the application of PTA is relatively concentrated. More than 90% of the world's PTA is used to produce polyethylene terephthalate (referred to as polyester, PET).
Producing 1 ton of PET requires 0.86 tons of PTA and 0.34 tons of MEG (ethylene glycol). Polyester includes fiber chips, polyester fibers, bottle chips and film chips.
In the domestic market, 75% of PTA is used to produce polyester fiber; 20% is used to produce bottle-grade polyester, which is mainly used in the packaging of various beverages, especially carbonated drinks; 5% is used in film-grade polyester, which is mainly used in packaging. for packaging materials, films and tapes. It can be seen that the downstream extension products of PTA are mainly polyester fibers.
Polyester fiber, commonly known as polyester. It is a synthetic fiber among chemical fibers.
The synthetic fiber manufacturing industry is the largest and most branched sub-industry in the chemical fiber industry. In addition to polyester, its products also include acrylic, nylon, spandex, etc.
In 2005, China's chemical fiber output was 16.29 million tons, accounting for 37% of the world's total output of 44 million tons. Synthetic fiber production accounts for 92% of the total chemical fibers, while polyester fiber accounts for 85% of synthetic fibers.
Polyester is divided into filament and short fiber, with filament accounting for about 62% and short fiber accounting for about 38%. There are two methods for producing filaments and short fibers: one is that PTA and MEG produce slices, which are melted and then spun; the other is that PTA and MEG do not produce slices during the production process, but are directly spun. become.
Huansha Textile Company not only produces the products introduced above, but also involves the manufacturing and processing of natural fibers such as cotton, linen, silk and wool.
The above are only the most upstream products involved in the entire textile industry, as well as the textile, bleaching and dyeing and other processes designed to the midstream.
Textile includes spinning and weaving. The main technological process of spinning is: top making, from raw materials to top; front spinning, from top to roving; post-spinning, from roving to plied wool. The spindle is made through the spinning stage, and then it enters the weaving process, which is divided into different weaving methods.
Three original weaves: plain weave, twill weave, satin weave; modified weave: based on the original weave, modified to obtain various different weaves; joint weave: two or more types of weave according to different A new organization formed by combining methods; complex organization: Among the complex warp and weft yarns, at least one is composed of two or more systems of yarns.
The green intelligent textile integrated system provided by Zhao Yi integrates spinning and weaving. In addition, it has two major advantages.
The first advantage is the most advanced equipment. The spinning workshop has an intelligent doffing roving frame, a new generation of ultra-long intelligent spinning frame, and an intelligent package logistics system for package yarns. It employs about 10 people for every 10,000 spindles of spinning. The high-speed air jet looms, electronic jacquard machines, sizing machines, warping machines, drawing-in machines, etc. in the weaving workshop are all higher than the world's advanced level.
The second advantage is to establish a complete integrated software control and tracking system. It has formed a closed-loop management of order receiving, purchasing, planning, production, warehousing, logistics, customer delivery, feedback, etc., and realized the entire production process tracking of orders.
The last step is the bleaching and dyeing process.
Bleaching refers to the removal of impurities contained in natural fibers, and the addition of various slurries, oils and contaminated dirt during the textile processing process. The presence of these impurities not only hinders the smooth progress of dyeing and finishing processing, but also affects the wearing properties of the fabric.
The purpose of scouring and bleaching is to use chemical and physical mechanical effects to remove impurities on the fabric, making the fabric white, soft, and with good permeability to meet clothing requirements and provide qualified semi-finished products for dyeing, printing, and finishing.
Dyeing refers to dyeing fabrics. The gray fabrics (woven fabrics, knitted fabrics, etc.) are processed through professional dyeing equipment: packing, sewing, desizing and oxygen bleaching, mercerization, shaping, dyeing, finishing, pre-shrinking and shaping, etc. The finished cloth produced is dyed cloth.
Zhao Yi's company has mastered all the above links except the petrochemical link. The relevant equipment and intelligent systems are completed through cooperation between precision instruments, machinery companies, semiconductor companies, and software companies. The bleaching and dyeing chemicals are provided by Pusi Chemical.
If the petrochemical industry is completed, it can be said that Zhao Yi has mastered the core technology of the entire industry. (End of chapter)