Schuller International, Inc.

Johns Manville

James M Long

Timothy M Nijakowski

Daniel L Kepling

A movable retaining wall is used in a first position in a compression baler to retain a compressed mass, such as microfibers, and is then moved to a second position into an opening in a wall of a packaging chamber filling the opening such that a gap between the edges of the interior surface of the retaining wall and the edges of the opening is too small to allow the compressed material to enter the gap when it passes through the packaging chamber and past the gap. To accomplish this requires the use of hidden hinges to guide the retaining wall as it moves from the first position to the second position and back to the first position. The hidden hinges allow the retaining wall to move essentially straight out of the opening in the wall of the packaging chamber before it begins to pivot towards the second position, thus allowing the tight fit. This feature prevents damage to the material being packaged since if it enters a gap while compressed, agglomerates will be formed when the compressed mass is moved through the apparatus which agglomerates cause processing problems and product defects.

Apparatus for densifying and packaging a bulky material

An apparatus for compressing bulky materials, like microfibers having a bulk density of less than about 0.2 PCF, to a much higher density, e.g. about 10.8 PCF, and packaging the compressed mass without damaging the material. The apparatus comprises a hopper having a pivoting wall wherein one edge of the pivoting wall is tapered and cooperates with a curved extension of one wall of an adjoining compression chamber to prevent the material from being pinched or scarffed which would damage the material. The compression chamber is long enough that when the compression means is withdrawn to accept another charge (each package requires a plurality of charging and compressing cycles) the compressed material cannot expand into the opening the compression chamber leading to the hopper. Finally, one end portion of a wall of the compression chamber has a movable retaining wall that also forms a portion of a wall of an adjoining packaging chamber. The hidden hinges and mover for the retaining wall is such that it allows the retaining wall to fit the openings in the walls of the compression and packaging chambers so tightly that the gaps between the retaining wall and the openings do not exceed about 0.067 inches.

Apparatus for densifying and packaging bulky materials

Disclosed are an improved apparatus for collecting fine fibers, such as glass fibers, having a mean diameter of less than two microns from a gaseous stream, a method of collecting fine fibers using the apparatus and the novel new product produced by this method. The improvement lies mainly in the way in which the collection drum is supported and sealed which allows the collection to take place at relatively high partial vacuums. The fiber is also consolidated in the gaseous stream by passing it through a duct having at least one approximately ninety degree turn therein.

Method and apparatus for collecting fibers, and product

A method and apparatus for accumulating and densifying microfibers such as glass fibers having mean fiber diameters below 1-2 microns is disclosed. A fine fiber blanket having been collected on a collection surface is removed and wound up on a mandrel having a permeable surface while a partial vacuum, preferably exceeding one hundred inches of water column, is maintained in the interior of the mandrel.

Growing community of inventors

Toledo, OH, United States of America

James M Long