The era is constantly advancing, and the Chinese sealing strip industry should establish a brand, bid farewell to the era of low price competition, and standardize management. I believe that with the development of sealing strips in China, the sealing strip industry will definitely usher in a new spring.

The development history of doors and windows is also the development history of sealing strips. The upgrading of doors and windows has also driven the upgrading of sealing strips. But the Chinese style production concept is worth pondering - blindly reducing costs and competing at low prices. There are many big brands in the door and window accessories industry, such as Jianlang, Yangyang, Noto, Sijixiangya... However, there are few big brands in the sealing strip industry. It's not our technical problem, it's a matter of production philosophy. I hope the leaders of the sealing strip industry will persist in doing their best and not be dragged down by the low prices of small manufacturers. For the sake of the future of Chinese doors and windows, they will become more responsible and make responsible sealing strips. A well-known brand in the field of door and window accessories.

1. The period of natural rubber sealing strips

In the mid-1990s, steel doors and windows, as well as ordinary aluminum alloy doors and windows and ordinary wooden windows, almost dominated the market share of doors and windows in China. At that time, the sealing strips were produced in the era of natural rubber, with a Chinese style small workshop production model and a Chinese style cost reduction. In addition, natural rubber itself was not resistant to aging in the natural environment, and it cracked, hardened, and broke within a few months. Finally, when the use of steel doors and windows was explicitly prohibited, it gradually faded out of the market

2. PVC polyethylene sealing strip

In the late 1990s, plastic steel windows were synonymous with noble doors and windows. Once upon a time, a provincial-level official from Hebei Province personally went to a plastic steel profile factory and waited in line for half a month before buying the profiles. Architectural doors and windows have entered the era of plastic steel, and the use of PVC sealing strips has been promoted in sealing strips. PVC sealing strips have become the darling of plastic steel door and window sealing strips due to their non cracking and easy welding properties. But in just two years, the problem has emerged. The precipitation of PVC plasticizers, an industry difficulty that troubles the world, is clearly reflected in PVC sealing strips. Due to the precipitation of plasticizers, problems such as long and short shrinkage, cross-sectional shrinkage, and poor sealing caused by contamination of profiles with rubber strips are common. The Chinese style small workshops, cost reduction, and low price competition have led to the use of inferior plasticizers and recycled PVC, exacerbating the problems in the entire sealing strip industry. Therefore, the end of PVC sealing strips is beginning to emerge.

3. EPDM EPDM sealing strip

At the beginning of 2000, a civil order was issued to restrict the use of polyethylene terephthalate (PVC) sealing strips and promote the use of EPDM (ethylene propylene diene monomer) sealing strips and MVQ silicone rubber sealing strips. The EPDM sealing strip, a high-end sealing strip used on trains, has finally been adopted by the construction industry. In fact, the widespread use of doors and windows in the industry began after 2002. At that time, doors and windows gradually entered the era of broken bridge aluminum alloys, and EPDM became synonymous with advanced sealing strips due to its superior physical properties and excellent aging resistance. In 2011, influenced by international factors such as oil, the price of ethylene propylene diene monomer skyrocketed, and the winter of EPDM sealing strips arrived. Therefore, Chinese wisdom came, and recycled rubber began to be widely used. Alas, to be frank, the entire sealing strip market was chaotic, and it was difficult to find a good sealing strip. A certain county in China is the base of domestic sealing strips, and about 70% of China's EPDM building sealing strips come from its county. There is a boss in the same industry in this county who once told me that we are very proud now. 70% of the country's ethylene propylene sealing strips come from here, and we almost monopolize the trend.

After listening to it, I was completely confused and almost had no brand. It was all about low price competition, earning a few small coins and feeling frustrated. I feel sad for the poor reputation of EPDM in the same industry, and also sad for the future of sealing strips

4. MVQ silicone rubber sealing strip

MVQ silicone rubber sealing strips are not necessarily made of * * sealing strip material, but in fact, silicone rubber has a history of several decades in China. A few years ago, it was indeed the pride of rubber, very delicate. In recent years, its cost has gradually decreased and it has been gradually used for building sealing. The advantage of using silicone rubber for sealing compared to ethylene propylene rubber is that it has better compression and deformation capabilities, resulting in better sealing performance. Starting from the principle of time temperature equivalence, silicone rubber can withstand temperatures up to 300 ℃, while ethylene propylene rubber can withstand temperatures of up to 80 ℃. Under the same temperature conditions, the lifespan of silicone rubber is twice that of ethylene propylene rubber, resulting in a longer service life. Moreover, it has excellent physiological inertness, is non-toxic and odorless. Silicone rubber also has excellent heat resistance, cold resistance, dielectric properties, ozone resistance, and atmospheric aging resistance. The protruding function of silicone rubber is that it can be used for a wide range of temperatures, from 0 ℃ (or lower) to+250 ℃ (or higher) for a long time. So silicone rubber is the ideal choice for building sealing in the current era.

In short, with the continuous progress of the times, the Chinese sealing strip industry should establish a brand, bid farewell to the era of low price competition, and standardize management. I believe that with the development of sealing strips in China, the sealing strip industry will definitely usher in a new spring.

Linqu Ruixing Plastic Products Co., Ltd

After more than 20 years of cultivation and experience, Rising Company has a vibrant, mature and confident team - skilled and professional R&D personnel, skilled and responsive sales personnel, comprehensive and meticulous customer service personnel Rising people will forge ahead and continue to innovate, contributing their strength to China's door and window sealing industry with the confidence and passion to climb new heights!

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