First: Casting and compounding. In this process, the plastic particles are melted and then mixed by the viscosity of the plastic itself. The disadvantage is that it is almost airtight.
The second: spray or scraping compound (hot melt adhesive compound). At present, almost all domestic manufacturers use this technology to produce high permeability waterproof materials. The disadvantage is that the air permeability is relatively low, because the micropores of the middle permeable membrane are actually blocked by hot melt adhesive.
Shanghai Pinji Electronic Technology Co., LTD. is one of the professional wiring equipment enterprises that engage in development, design, manufacturing, sales and service. Products range: junction box series, nylon cable gland series, metal cable gland series, air vent valve series, corrugated conduit series, watertight corrugated tube fitting series, quick connector series, rubber series etc. At present, the company has obtained CE, UL, TUV, IP67 waterproof and other certification certified by EU system. Our products are designed and tested to meet a wide range of applications, even under the most severe conditions.