As an important part of textile equipment, knitting needles are particularly important for anti-rust protection during production and transportation. Knitting needles are rust-prone materials. If the knitting needles are rusted before they are put into use, it will bring huge losses to textile enterprises. Because it needs to be in direct contact with textiles, the anti-rust solution of coating anti-rust oil on the knitting needles cannot be adopted, and the commonly used paper and film packaging cannot meet the anti-rust requirements.

The working conditions of knitting needles are harsh, not only there is sliding friction between them and textiles, but also a large tensile force, which makes the knitting needles have the characteristics of wear resistance, heat resistance, high strength, etc., so its material contains more carbon, manganese and silicon. Carbon can improve wear resistance, manganese can improve mechanical strength, and silicon can increase surface hardness by improving hardenability. From the perspective of application, these three elements are beneficial and necessary.

 

However, these three elements cause the knitting needles to be extremely prone to rust. First of all, if there is too much carbon, it will form iron carbide, which will form a galvanic reaction with iron, that is, corrosion. The reason why cast iron is easy to rust is the same. The carbon content of knitting needles is lower than that of cast iron, which belongs to high carbon steel. Manganese and silicon exist in the form of oxides in iron, and when they encounter carbon dioxide and water in the air, they will form manganese acid or silicic acid, and their strong corrosion will cause the surrounding iron to rust. This is also the reason why common manganese steel (such as spring) and silicon steel (such as motor stator) are prone to rust.



Knitting needles are small in size and often dozens or even hundreds of them are packaged together. This packaging method results in a large surface area, so the risk of rust increases simultaneously. The early anti-rust method for knitting needles was to wrap them in paper, but the area where the needles are attached to the paper is prone to rust because the water and organic acids contained in the paper can cause rust. Later, film packaging was used, and desiccant was sometimes added. Although the anti-rust effect was improved, rust would still occur after a long time. Because the air in the film packaging contains water and oxygen, the inside of the packaging is a slow corrosion process, and rust visible to the naked eye will form after a long time. Except that the desiccant has an anti-rust effect by actively removing rust-causing substances, paper and film can only be regarded as packaging materials and do not have anti-rust functions, so the use of these two types of materials for packaging will inevitably cause rust problems.


 

Brando is the first vapor phase anti-rust manufacturer engaged in research and development of knitting needle anti-rust in China and has achieved success. The anti-rust envelope bag is specially designed for knitting needles. The main material of the envelope is thick kraft paper. The outside is treated with waterproof and air-proof treatment to effectively prevent rust-causing substances from entering the envelope. There is a gas phase corrosion inhibitor on the surface of the kraft paper fiber inside, which can volatilize anti-rust gas Adsorbed on the surface of knitting needles, the water molecules and oxygen molecules that originally adhered to the surface of the knitting needles and caused corrosion will be squeezed out by the gas phase corrosion inhibitor molecules, protecting the knitting needles from rust without dead ends. Immediately after the envelope is sealed, it has a sealing effect, which can keep the internal anti-rust gas concentration within the effective range, and then seal it with wet kraft paper tape, which has a better anti-rust effect.

 

Compared with traditional paper and film packaging, the Plano kraft paper envelope anti-rust packaging solution has the following advantages:

It has active anti-rust function and excellent anti-rust effect

In the small space of the envelope, the concentration of anti-rust gas is always maintained at an effective anti-rust Therefore, the gas protective layer formed on the surface of the knitting needle is relatively thick, which can insulate the water and oxygen that will cause corrosion. The anti-rust effect is excellent, and the knitting needle is not easy to rust.

The operation is simple and convenient, and the packaging efficiency is high.

The envelope is open by default, and the opening can be opened with a little force. Put the knitting needle in the envelope and close the mouth. If you use wet kraft paper tape to stick the seal firmly, the anti-rust effect will be better.

Green water and lush mountains are golden mountains and silver mountains. In response to the call of environmental protection, both

kraft paper and gas phase corrosion inhibitor can be degraded, and will not produce white pollution like films.