Automotive carpet with solid multilobal fibre
A car carpet, multi-lobal technology, applied in fiber processing, vehicle parts, special positions of vehicles, etc., can solve the problems of low loading, etc., achieve high stability, high fiber web modulus, and cost reduction
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Embodiment approach
[0124] According to an embodiment of the present invention, the automotive carpet comprises:
[0125] at least one needled facing layer made of staple fibers as the top layer, wherein the staple fibers comprise at least 50% by weight solid multilobal fibers; and at least a partial incorporation of the fibers in the facing layer.
[0126] The outer cross-section of the solid multilobal fiber may be trilobal or quatrefoilal, or approximately trilobal or quatrefoilal (cross-shaped), or the like. The trilobal fibers may be polypropylene fibers or polyester (PET) fibers.
[0127] In automotive carpets, the solid multilobal fiber content of the facing may be at least 60%, at least 70%, at least 80%, or at least 90% by weight of the total fiber content, preferably up to 100% by weight of the total fiber content of the facing %.
[0128] The threshold for improvement in carpet performance according to the present invention is expected to be that of the overall fiber used for the nee...
no. 1 approach
[0146] The nonwoven fabric is made of polypropylene 4.4dtex trilobal fibers and 6.7dtex round fibers. Both fibers have the same coverage distance when observed under the microscope. For 4.4 dtex trilobal fibers, the coverage distance (distance of solid material fibers) is almost equal to that of 6.7 dtex linear mass density circular cross-section fibers.
[0147] For each fiber, a 5-layer nonwoven was constructed using the following parameters:
[0148] ·The first needle board: 75 needles / cm from top to bottom 2 , piercing depth 11.5mm, 4500 needles / m at the entrance, 7000 needles / m at the exit, needle type 15x18x36 3,5 R222 G3037.
[0149] ·Second needle board: 100 needles / cm from bottom to top 2 , puncture depth 11mm, 7000 needles / m across the board, needle type 15x18x36 3,5 R222 G3037.
[0150] ·Third needle board: 100 needles / cm from top to bottom 2 , puncture depth 8mm, the whole board 7000 needles / meter, needle type 15x18x363, 5 R222 G3037.
[0151] • For round fib...
no. 2 approach
[0167] In other embodiments, samples fabricated as described in Embodiment 1 were combined using three different backing methods:
[0168] 1. Pre-coated backing
[0169] 2. Full bath resin backing
[0170] Precoated Backing Embodiments
[0171] A suspension of latex and chalk in water was applied by a kiss roll system at a weight of 300 g / m 2 The polypropylene circular fiber needle felt and the weight is 260g / m 2 and 210g / m 2 The hairiest side of the polypropylene trefoil needle felt. The suspension density was set at 1200 g / l. The carpet then passes through a first oven at 140°C followed by a second oven at 120°C. After that, cut off the edges of the carpet and cut the remaining 4 meter wide carpet into two parts with a width of about 2 meters.
[0172] The following carpets were backed and observed for final roll weight (Table 2 was performed on a 4m wide carpet)):
[0173]
[0174] Table 2
[0175] Trilobal rugs pick up less chalk-latex suspension than round fib...
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Abstract
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