公开(公告)号：US5316827A

公开(公告)日：1994-05-31

申请号：US665968

申请日：1991-03-07

申请人： Michael Hill ,  Walter A. Nichols

发明人： Michael Hill ,  Walter A. Nichols

IPC分类号： D02G1/12 ,  D01D5/22 ,  D01D5/42

CPC分类号： D02G1/125 ,  D02G1/12 ,  Y10T428/24107 ,  Y10T428/24314 ,  Y10T428/24636 ,  Y10T428/26 ,  Y10T442/627

摘要： An improved stuffer box used for crimping textile fibers, particularly fibrillated polyolefin films. The width of the stuffer box is related to the linear density of the fiber bundles to be crimped whereby there is one millemeter of width for each fiber bunder size in the range of from about 200 to about 750 denier. Pressure controlled hinged lid or fixed lid exit orifices may be employed. Also employed may be a distributing device for applying additive material to the textile fibers prior to crimping to enhance the crimping operation or to enhance the end use of the crimped fiber or both. Fibrillated polyolefin materials that are crimped in accordance with the invention are adapted for use as filter materials in smoking articles.

摘要翻译： 用于卷曲纺织纤维，特别是原纤化聚烯烃膜的改进的填塞箱。 填塞箱的宽度与要压接的纤维束的线密度有关，因此对于每个纤维束尺寸在约200至约750旦尼尔的范围内，宽度为1米。 可以采用压力控制的铰接盖或固定盖出口孔。 还可以使用分配装置，用于在卷曲之前将添加剂材料施加到纺织纤维以增强卷曲操作或增强卷曲纤维或两者的最终用途。 根据本发明卷曲的纤维化聚烯烃材料适用于吸烟制品中的过滤材料。

公开(公告)号：US4925602A

公开(公告)日：1990-05-15

申请号：US231148

申请日：1988-08-10

申请人： Michael Hill ,  Walter A. Nichols

发明人： Michael Hill ,  Walter A. Nichols

IPC分类号： B01D39/00 ,  D02G1/00 ,  D02G1/12 ,  D02J13/00 ,  D04H13/02

CPC分类号： D02G1/12 ,  Y10S264/47

摘要： A method is provided for heating fibrillated polyolefin film prior to crimping, to improve the crimping, and thus the yield and variability as a filter, of the tow. The fibrillated tow is crimped while still hot from the heating step. The resulting fibers have more uniform crimping at higher levels than those not subject to heating.

公开(公告)号：US5104367A

公开(公告)日：1992-04-14

申请号：US617395

申请日：1990-11-20

申请人： Michael Hill

发明人： Michael Hill

IPC分类号： D01D5/42

CPC分类号： D01D5/423 ,  Y10S264/47 ,  Y10T83/9314

摘要： A roller for use in fibrillating oriented films of polyolefin materials having a plurality of pins projecting from the surface of the roller. The pins are distributed in a plurality of rows spaced around the roller surface. The rows each contain about 25 to 34 pins per inch in a space-staggered relationship along two adjacent lines extending along the surface of the roller, either in a linear relationship inclined to a line parallel to the axis or rotation, or in a sinusoidal relationship with adjacent rows being in or out of phase. The roller is rotated and the film is advanced over the rotating roller surface for an arc length of contact of about 30 to 37 degrees to fibrillate the film. The ratio of the surface speed of the roller to the advancing film are controlled to a ratio between from about 1.8:1 to about 2.2:1.

摘要翻译： 一种用于聚烯烃材料的原纤取向膜的辊，具有从辊的表面突出的多个销。 销以分布在辊表面周围的多行分布。 这些排每个包含大约25至34个销/英寸，沿着沿着辊的表面延伸的两个相邻线的空间交错关系，或者以与轴线或旋转平行的线倾斜的线性关系，或以正弦关系 相邻的行是相位或相位不同的。 辊旋转并且膜在旋转辊表面上前进约30至37度的电弧长度以使膜成纤维化。 将辊与前进膜的表面速度的比率控制在约1.8:1至约2.2:1之间的比率。

公开(公告)号：US5025815A

公开(公告)日：1991-06-25

申请号：US231147

申请日：1988-08-10

申请人： Michael Hill ,  Walter A. Nichols

发明人： Michael Hill ,  Walter A. Nichols

IPC分类号： A24D3/02 ,  A24D3/08 ,  A24D3/16 ,  D01D5/42

CPC分类号： A24D3/16 ,  A24D3/08 ,  D01D5/423

摘要： A polyolefin material having improved fibrillation properties, allowing one to achieve higher yield in cigarette filters made from the fibrillated material is provided. The material includes between about 70% and about 99% of at least one polypropylene homopolymer with a melt index of between about 1.2 to about 3.0 (measured according to ISO standard 1133 at 230.degree. C., 2.16 kgf) and a density of about 0.905 g/cc, and between about 1% and about 30% of at least one low density polyethylene homopolymer with a melt index of between about 0.9 and 3.0 (measured according to ISO standard 1133 at 190.degree. C., 2.16 kgf) and a density of about 0.921 g/cc.