Heat-fusible composite fiber and uonwoven fabric using heat-fusible composite fiber
A composite fiber, thermal fusion technology, used in non-woven fabrics, textiles and papermaking, conjugated synthetic polymer rayon and other directions, can solve problems such as loss of hand feel, damage to stretchability, and inability to achieve excellent stretchability, The effect of high nonwoven strength
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manufacture example
[0057] As a production example in the former case, the following method can be cited: the heat-fusible composite fiber of the present invention is processed by a carding method to form a web, and the melting point of the first component is higher than the melting point and the fiber shrinks. Pass through the hot air circulation heat treatment machine (hot air penetration machine), while bonding and shrinking at the same time. In the case of the latter, a production example may include a method in which the heat-fusible conjugate fiber of the present invention is formed into a web by a carding method, and the processing temperature is not less than the melting point of the first component and not more than the shrinkage initiation temperature of the fiber. After passing through a hot air circulation heat treatment machine (hot air penetration machine) to form a nonwoven fabric, heat treatment is performed with a shrink dryer at a processing temperature above the shrinkage initia...
example 1
[0066] The area ratio of the second component and the third component on the cross section of the fiber was 50:50, and the area ratio of the first component to the total area of the second component and the third component was 1 / 2. Fiber has such figure 1 In the cross section of , the first component continuously occupies 33% of the fiber surface in the fiber longitudinal direction on the cross section in the direction perpendicular to the fiber long axis. In the shrinkage measurement in a 100°C oven, the shrinkage was 3%, and in the shrinkage measurement in a 125°C oven, the shrinkage was 70%.
[0067] Utilize small carding machine to make this fiber unit area weight be 30g / m 2 The net is then processed into a non-woven fabric using a hot air penetration machine with a processing temperature of 100°C. Then, hot air penetration processing was performed at a processing temperature of 125° C., and heat shrinkage treatment was performed.
[0068] The obtained nonwoven fabric...
example 2
[0070] The area ratio of the second component and the third component on the fiber cross section was 40:60, and the ratio of the area of the first component to the total area of the second component and the third component was 1 / 3. Fiber has such figure 2 In the cross section in the direction perpendicular to the long axis of the fiber, the first component continuously occupies 20% of the fiber surface in the fiber length direction. In the shrinkage measurement in a 100°C oven, the shrinkage was 7%, and in the shrinkage measurement in a 125°C oven, the shrinkage was 78%.
[0071] Utilize small carding machine to make this fiber unit area weight be 30g / m 2 The net is then processed into a non-woven fabric using a hot air penetration machine with a processing temperature of 100°C. Then, hot air penetration processing was performed at a processing temperature of 125° C., and heat shrinkage treatment was performed.
[0072] The obtained nonwoven fabric is soft and exhibits...
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Abstract
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