Environment-friendly flame-retardant sofa fabric and preparation method and device thereof

Abstract

The invention discloses an environment-friendly flame-retardant sofa fabric and a preparation method and device thereof, and particularly relates to the technical field of sofa fabric preparation. The method comprises the following steps: step 1, mixing a PUR hot melt adhesive and a flame retardant liquid by using a hot melt adhesive compound machine, introducing nitrogen during mixing to discharge internal air vapor, and introducing the nitrogen to form isolated air, so that a pollution-free mixed environment is formed; 2, the bottommost layer is covered with the single-face velvet base cloth. The vacuumizer can be closed and the extraction pipe is sealed by adopting the protection mechanism, so that the mixing box can be filled with nitrogen, air and water vapor are effectively isolated, longer-time, finer and more effective mixing / compounding operation can be carried out, mixing of the PUR hot melt adhesive and the flame retardant liquid is facilitated, the mixed liquid is dispersed uniformly and stably, and the flame retardant effect is improved. In the mixing stage or the sizing stage, the PUR hot melt adhesive can be prevented from being in contact with water vapor / air, so that unnecessary reaction cross-linking solidification is avoided, meanwhile, possible oxidation of the PUR hot melt adhesive in the melting and heating state can be avoided, the product is more durable, and in addition, the application adhesion effect and the flame retardant effect of the mixed liquid are improved. And detection can be carried out when nitrogen overflows, waste caused by overflowed nitrogen is avoided, and the nitrogen cost is further saved.

Description

technical field [0001] The invention relates to the technical field of sofa fabric preparation, more specifically, the invention relates to an environment-friendly flame-retardant sofa fabric and a preparation method and device thereof. Background technique [0002] Sofa fabric is the collective name or abbreviation of the main textile covering used in the sofa manufacturing process. In the manufacturing process of the sofa fabric with composite structure, a hot glue laminating machine can be used for roller coating operation, so as to achieve uniform coverage of glue on the sizing coating Cloth, and use PUR hot melt adhesive to bond the sofa cover and base fabric. [0003] In the prior art, the PUR hot melt adhesive is affected by water vapor and air during the mixing process. In this way, during the use process, the PUR hot melt adhesive may condense when encountering water vapor / air during the melting, mixing, discharging, and roller coating stages. Skin. Under the conv...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the PUR hot melt adhesive is affected by water vapor and air during the mixing process. In this way, during the use process, the PUR hot melt adhesive may condense when encountering water vapor / air during the melting, mixing, discharging, and roller coating stages. Skin

Under the conventional process, in order to avoid long-term PUR contact with water vapor / air, the PUR hot melt adhesive and other materials (such as the mixing of flame retardant liquid) are usually quickly completed in a short time, and the material is quickly discharged and rolled in a short time. This will lead to uneven mixing of materials, and the mixed materials may also adhere unevenly during coating, and the adhesion effect is poor. In addition, the PUR hot melt adhesive layer may also be oxidized due to the influence of air and heating, resulting in The internal color is quite different, which affects the normal use of the sofa fabric and is easy to fall off

For the flame retardant performance of sofa cloth, the existing PUR hot melt adhesive compounding process is also difficult to meet the relevant requirements

Images