Abstract: In the manufacture of a fiber tow, particularly cellulose acetate tow, a stuffer box crimper has one roller adapted to induce crimp into the tow. This roller induces crimp by preferentially weakening a portion of the tow. This roller has an axially grooved surface. This roller may be located in the stuffer box crimper or before the stuffer box crimper.

Abstract: A method for producing a microporous material comprising the steps of: providing an ultrahigh molecular weight polyethylene (UHMWPE); providing a filler; providing a processing plasticizer; adding the filler to the UHMWPE in a mixture being in the range of from about 1:9 to about 15:1 filler to UHMWPE by weight; adding the processing plasticizer to the mixture; extruding the mixture to form a sheet from the mixture; calendering the sheet; extracting the processing plasticizer from the sheet to produce a matrix comprising UHMWPE and the filler distributed throughout the matrix; stretching the microporous material in at least one direction to a stretch ratio of at least about 1.5 to produce a stretched microporous matrix; and subsequently calendering the stretched microporous matrix to produce a microporous material which exhibits improved physical and dimensional stability properties over the stretched microporous matrix.

Abstract: An ablative compound is made with a synthetic perovskite having an aspect ratio greater than 100.

Abstract: The instant application relates to a fiber bale and a method for producing the same. The instant fiber bale includes a highly compressed hexahedral fibrous material substantially free of disrupting curvatures on a top side or a bottom side. The highly compressed hexahedral fibrous material has a packing density of at least 300 kg/m3. The method for producing a fiber bale according to instant invention includes the following steps: (1) providing a press for producing a highly compressed hexahedral fibrous material comprising at least one convex bale platen; (2) filling the press with the fibrous material; (3) pressing the fibrous material via the press; (4) thereby forming the highly compressed hexahedral fibrous material; (5) packaging the highly compressed hexahedral fibrous material with a wrapping material; and (6) securing the wrapping material thereby producing the fiber bale.

Abstract: The invention relates to a separator made of elastic plastic and suitable for use in a lead storage battery, and consisting of sheet material with an inner region and two peripheral regions and having ribs running in the longitudinal direction on at least one side, the ribs in the inner region being more widely spaced than those in the peripheral region, characterized in that at least the first 3 ribs in the peripheral region that are adjacent to the inner region have a cross-section essentially in the form of a triangle projecting from the level of the sheet material, with the base of the triangle on the sheet material, one side of the triangle facing the inner region and the other side facing the periphery, the side facing the inner region being longer than that facing the periphery, and to a lead storage battery containing such separators.

Abstract: In the manufacture of a fiber tow, particularly cellulose acetate tow, a stuffer box crimper has a pair of nip rollers, at least one, made of a solid ceramic material.