Five ways to identify the advantages and disadvantages of plastic strips
Plastic steel door and window seal
(1) Hand tearing. Take a piece of rubber strip and tear it on the thin part. The more force it needs, the higher the glue content, which means the better the overall performance.
(2) Hand pull. Take it in your hand like pulling a rope, first see if it can be broken, and then see if it can rebound to its original length. The better the elasticity, the more it will not be deformed due to the long-term pressure of the door after installation.
(3) nail scraping. If the material is not good, the amount of glue is not high, and the surface of the strip is easy to be scratched. After being put on the door, as long as there is a hard object collision or a slight scratch, it will be “brokenâ€, which is very unattractive and many consumers will mistake. Thought it is the door material is poor.
(4) Intuitive. Just look at the section of the strip. If it is bright and close to the surface color, the material contains less filler.
(5) Nasal smell. If you smell odor or plastic, it is definitely not suitable for wooden doors. The standard strips should be tasteless or have a little natural rubber taste (very easy to distinguish when rolled). In the market, many lawless elements use recycled old cable skins and the like as raw materials, plus some cheap aromatic oils and heavy calcium to adjust the hardness of the rubber strips. Experts pointed out: This type of illegal products contains a variety of harmful elements to the human body. On the same day, when it is hot or in the sun, the surface is prone to a layer of oil. The volatilized odor can cause people to become dizzy and even carcinogenic, and it is extremely easy to harden. Quickly shrink and deform when touched gently.