The gap between China's flag industry and foreign countries
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The gap between China's flag industry and foreign countries

Release time:2022-06-13 13:36 view:125 次

The rise of the flag industry in China began in the early 1980s. Although the founding of the people's Republic of China has had some foundation for more than 30 years, the equipment is very simple. Apart from political flags, there are few other flags. Since the reform and opening up, people's ideological understanding has changed a lot, and the banner as a marginal discipline of social psychology and art has also developed. The problem is that our government and professional departments have not seized the opportunity to organize research and guidance institutions to develop and guide, but follow its own flow to form the current situation.


1. the first is the fabric of the flag. It is very rare to make a flag with pure cotton. At present, Fuchun spinning, silk power spinning, Nisi spinning, Chunya spinning and other varieties are popular. These fabrics are not designed for making flags. They can be purchased in the market when needed. It is relatively convenient, but it may not meet the material requirements of the flag. The polyester Fuli spinning developed in the 1990s is twisted with 100D low elastic polyester yarn, Although the above-mentioned fabrics have many advantages, there are still many troubles in the application of disperse dyes to prevent discharge dyeing technology. The permeability, uniformity and brightness of large-area printing are far behind the international level.


2. one of the quality characteristics of the flag is that the color is consistent on the front and back, so two requirements should be considered when selecting the printing process: A. direct printing must have strong permeability; B anti discharge process. In China, the flags of the state, the party, the army and the regiment all use discharge dyeing technology. However, there are both discharge dyeing and direct printing in the national flags and all kinds of flags of more than 190 countries in the world, which is a difficulty in technology. Most flag making enterprises are not qualified, so it is common to use paint to print flags. The coating process has its advantages. It is not affected by the fabric performance, and it is easy to operate. It can also cover and print the discharge effect of the coating on the deep background color. However, the shortcomings of the coating process are increasingly exposed. Firstly, the coating process has poor permeability, no double-sided effect, and secondly, it has a hard hand feeling, which affects the flag elegance. At the same time, the coating color has a certain degree of adsorption, which has a large contamination of dust in the air, and its color fastness is also poor. Therefore, to improve the internal and external quality of the flag, we must use the dye process, which is the weak link in our flag industry.


3. Since the early 1990s, polyester silk disperse dyes have been used to produce flags. The pure polyester disperse process is a very normal process in the printing and dyeing industry, that is, the polyester discharge process is relatively mature, but they are still rare in the flag industry, and it is difficult to coordinate all aspects. First, fabric grey cloth; Second, dyeing; Third, high temperature steaming. The main equipment is the steamer. To reach the high temperature of 175 ~ 180 ℃, only the continuous steamer can be used, but the investment is large. The temperature of circular high-temperature and high-pressure steamer can only reach 135 ℃, and full drawing is not enough. Half drawing pad dyeing is the key. At present, although the half drawing process has been used for production for threeorfour years, the qualified rate of the flag is still very low, which is in a maintenance state. Disperse dye direct printing process also involves post-treatment equipment such as water washing and stenting, which are basically not matched by existing enterprises. The wool like flag is still lack of finishing, which makes the wool feel and appearance performance of the flag weak. In general, the polyester flag is gradually expanding, and the process technology needs to be improved. Except for some flags of nylon fabric, the coating process is not suitable for it, and the application effect is poor. In recent years, although there are nylon special pigment printing pastes (both water-soluble and oil dosage forms), there are not many used for flags. As for printing with acid dyes, there are even fewer, because nylon silk screen printing still has many operational technical problems, and the post-treatment is not matched, which is mainly restricted by the equipment. We use BASF's peranil p-type paste disperse dye, which uses HEF and hvw thickener as paste, and post press high temperature and high pressure steaming, which can eliminate the water washing process (simple washing is better), which is very beneficial to enterprises with incomplete equipment. I think this is a development direction.


4. the flag sewing and hanging devices are uncoordinated and mismatched. Our flags lack efforts in sewing, and the specialization of sewing equipment is not complete, such as seam sewing machines, multi needle sewing machines, etc. the method of hanging devices is monotonous and inconvenient. People often buy flags and worry about how to hang them. As for flag frames, flag bases, flagpoles, flag tops, flag ears, etc., there are few varieties and styles and lack of artistry, Most of these goods come from township enterprises or self-employed people, so we should pay attention to them and develop them as a whole.

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