Research On Process And Hot Rolling Technology Of Polyester Spunbond Nonwoven For Dried Flower

Since the nineteen eighties, china began with the introduction of spunbonded equipment and technology, and product spunbonded nonwovens. As a result of spunbonded nonwovens had good product performance, low cost, wide application and other advantages, in recent years the spunbonded nonwovens had been relatively rapid development, the annual proeduction capacity and yield increased quickly,it showed that spunbond nonwoven products were more and more popular.With the improvement of people's living standard, the requirements on the decoration, beautification, health and other aspects increased quickly. Because they could make life beautiful and comfortable.Currently the decorating with flowers on the market were used in mostly woven material. The mean in the development of polyester spunbonded nonwoven products in decorative materials was not only the lower cost nonwoven material,but also high added value and development trend,last but not least,it could meet the people's pursuit of new decorative material.This study firstly test polyester spunbonded nonwovens and the traditional simulation base cloth,and then analysised the crease recovery, bending stiffness of polyester spunbond nonwoven fabric were better than the base cloth's,In addition, due to the fiber random arrangement of polyester spunbonded nonwovens, the simulation was more realistic. But,the base cloth was superior performance in fineness, strength, bending elastic modulus ratio than polyester spunbonded nonwovens.Aiming at the deficiency of polyester spunbond nonwovens performance, this study changed air pressure in Spunbonded Production drafting process to change the polyester filament fineness. In addition, it analysised the influence of the shape of the rolling spot, spot size, proportion of the point size and the orientation of the polling spot on the property of nonwoven from the spot bonding point of view. At last through stiffen finishing of the polyester spunbonded nonwovens to improve the bending modulus of elasticity of polyester spunbonded nonwovens.The research showed that increased the air pressure could make the polyester filament fineness decreased in the drafting process of the polyester spunbonded nonwovens, and when the draft pressure was at least 3bar, it could obtain the crystallization, orientation, the uniformity of polyester filament. In addition, with improving rolling point area, rolling point area ratio,if point was the square and direction of fiber alignment of 45 degrees was arranged rolling point arrangement, could make polyester spunbonded nonwovens strength, stiffness, better performance. In addition, this study identified using TF-630 hard finishing process:TF-630 stiffening agent:TF-630C catalyst is 5:1, TF-107T lg/L penetrating agent.Roller pressure 0.3MPa, liquid-mangling rates 150%. The selection of stiffening agent TF-630 concentration was for 200g/L, baking temperature of 180℃, finishing time was 120S, it could obtain better stiffening effect. After the consolidation, polyester spunbonded nonwovens strength, flexural rigidity had been increased, bending elastic modulus were the same of woven cloth, although crease-recovery droped a little, but it was still consistent with the requirements of decorative cloth.