Abstract: The invention relates in particular to a machine (1) for additive manufacturing by the sintering or melting of powder (2) using an energy beam (3) acting on a powder layer (23) in a working zone (4), said machine comprising a device for producing a layer of said powder, said device comprising: means (5) for storing the powder, means (6) for distributing the powder able to travel over the working zone in order to distribute the powder in a layer (23) having a final thickness (24) adapted to additive manufacturing, feeding means (7) able to transfer the powder from the storage means (5) to the distributing means (6), dosing means (8) able to control the quantity of powder transferred from the storage means (5) to the distributing means (6), said machine being characterised in that: the storage means (5) are located above the working zone (4), the feeding means (7) utilise gravity, and the feeding means (7) and the dosing means (8) are able to move with the distributing means (6).

Abstract: In one embodiment, a biased fabric is supplied. The biased fabric supply has a first specified width and a first bias angle of warp yarns relative to weft yarns. At least one overfeed roller configured to overfeed fabric from the biased fabric supply at an overfeed rate is provided. At least one spreading arm configured to stretch the fabric to a second specified width and a fabric oven configured to heat the biased fabric supply to a specified temperature and output a balanced crimp and/or elongation biased fabric are also provided.

Abstract: In a method for edge glueing and in an arrangement including a tensioning aggregate with a device for edge glueing, a glue is applied in a spin spraying process, and the application is performed on the product web which is extended at the edges and smoothed.

Abstract: The present invention provides a method for removing wrinkles formed on a web, which is continuously transported through a plurality of guide members. The plurality of guide member includes a crown roller which has the diameter gradually increased toward the center thereof. The crown roller is placed in a transport path of the web and downstream of a first zone in which wrinkles are desirably removed, and the web is deformed in a second zone located downstream of the crown roller so as to at least decrease the width of the web, whereby the wrinkles in the first zone are removed. Even when the web is thin (10 ?m or less), without using particular backup means, wrinkles formed during transport and coating of the web can be removed. In addition, since wrinkles are appropriately removed, a coating film having a uniform thickness can be obtained by an extrusion coating method.

Abstract: Thickness unevenness of a coating liquid layer in a width direction of a web is adjusted by moving a guide roller at the proximity of a coating rod so as to deliberately provide tension variation in the width direction of the web in purpose of forming the coating liquid layer with a desired thickness on the web by the coating rod.

Abstract: A continuous strip coating machine has top and bottom applicator rolls and a backup roll adjacent the top applicator roll. A lift roll to lift the strip of material and thus vary the angle of wrap of the strip about the bottom applicator roll is provided. The use of the lift roll in turn varies the pressure between the strip and the roll and thus the thickness of the coating applied to the strip bottom. Thickness may be measured indirectly by measuring pressure of the strip on the applicator roll. Thickness may also be measured directly. Oscillations of the strip in a drying oven may also be sensed and compensated for. Feedback control is used with the thickness measuring techniques to control the coating thickness by varying angle of wrap, relative speed between the applicator roll and strip, and/or nip pressure between the applicator roll and a transfer roll that transfers coating material to the applicator roll.

Abstract: A method and apparatus for manufacturing elastomer coated bias fabric are disclosed wherein the fabric is conducted in a horizontal path as it is transversely stretched and coated with an elastomeric composition; using an externally driven roll coater, the elastomeric composition is applied to one surface of the fabric from where it is forced through the interstices of the fabric to the opposite surface whereby both surfaces of the fabric are coated with elastomeric composition.

Abstract: Coating apparatus (10) is disclosed which includes a foam table assembly (A), a coating roll (D), and an automatic trough control system (58). A blade assembly (B) having a coating blade (44) may be selectably positioned over a foam table (20) of the foam table assembly (A) or the coating roll (D) depending upon the type of coating technique desired. A roll mandrel assembly pivotably supports the coating roll (D) by means of a pair of pivot arms (124, 126). Air cylinders (138, 140) provide a constant pressure on the pivot arms which holds the coating roll (D) in a coating position under the constant pressure. The coating roll deflects upon the passage of a thickened seam portion (S) of the fabric. During the deflection, the constant pressure is maintained on the coating roll. The support arms (124, 126) are carried on carriages (102, 106) to move the support arms laterally to accommodate different length coating rolls.

Abstract: A process and device for producing a flexible layered article suitable for use in water proof garments wherein one of said layers is a microporous membrane material produced from the "solvent non-solvent" method wherein a fabric backing coated with the membrane material dissolved in a solvent is contacted with a drum having gripping means offering substantial resistance to the natural tendency of the coated fabric to curl when immersed in a non-solvent for the polymer material.

Abstract: A method and apparatus for making a polymeric coated fabric layer is provided, the method comprising the steps of providing a fabric layer having warps and fills initially woven at a certain angle relative to each other, then changing the certain angle to another angle by stretching the fabric layer in one direction thereof whereby the fabric layer is in an altered condition thereof, disposing a liquid polymeric coating on at least one side of the fabric layer while the same is in the altered condition, doctoring the coating, further stretching the fabric layer in the one direction after the step of disposing the coating thereon, and drying the coating with a heating unit to at least a degree thereof that will hold the fabric layer in substantially the altered condition thereof, the step of doctoring the coating taking place after the step of further stretching the fabric layer and the step of further stretching the fabric layer taking place after the heating unit has dried the coating to at least a degree th

Abstract: An apparatus for manufacturing an elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one face of the fabric is provided with an uncured, tacky, carboxylated elastomeric composition. In one embodiment, the fabric is prepared by pre-impregnating the fabric with a neoprene latex composition followed by coating the neoprene composition on both faces of the fabric while the fabric is transversely stretched, and after drying the fabric, overcoating one face only of the coated fabric with a tackified, carboxylated neoprene latex composition.

Abstract: Film coating and biaxial orienting apparatus comprising a first uniaxial stretching unit for machine direction orientation of the film, a coating device to provide a liquid coating composition in a center band on the film, a second uniaxial stretching unit for transversely orienting the coated film and having edge holders for gripping the film, and a heater for curing the coating under constrained conditions during setting of the film.

Abstract: The utilization of double knit fabrics is extended to fields other than their conventional employment in wearing apparel. This is accomplished by dimensionally stabilizing the otherwise easily distortable double knit material by applying to one surface thereof a controlled layer of a latex of a polymeric coating composition comprising a copolymer of ethylene and vinyl chloride in an aqueous vehicle. The thus coated material is properly cured and dried.

Abstract: A machine to process fabric knit in tubular form which includes apparatus to lay down a stripe of a gumming composition to allow the tubular fabric to be slit in the center of the solidified gumming stripe. The slit knit fabric is then opened up to full width and taken up. The tubular knit goods are conveyed through the gumming and slitting operation by a four belt conveying system which allows the lengthwise tension and the width of the tubular fabric to be controlled.

Abstract: Method and apparatus for coating a moving porous web with viscous coating material, particularly for coating bias-cut, woven fabric with a tacky neoprene composition, to fill the interstices and uniformly coat the faces thereof, comprising a tenter frame for moving the fabric in a horizontal path of travel while maintaining it in dimensional stretched configuration. A pair of coating heads having opposed discharge manifolds positioned above and below the path of movement of the fabric on the tenter frame are supplied with viscous coating material which is applied to the moving fabric. The fabric is dried after each coating application and subsequently collected for use as reinforcement in the rubber cores of V-belt contructions.

Abstract: Method and apparatus for the surface coating and impregnation of the interstices of a moving porous web, and particularly method and apparatus for the production of elastomer-coated, bias-cut woven fabrics during a tentering operation. The coating apparatus disclosed consists of means for applying a layer of coating material sequentially to the lower and upper surfaces of the moving web to substantially penetrate the coating into the interstices of the web, while smoothing the surfaces to provide a uniform and controlled coating of desired thickness on the fabric.

Abstract: A method of coating a fabric material and calendering the material while longitudinally and transversely tensioning the material, the coating being synthetic and being applied to one side of the material, and being heated in a curing oven. Then applying more synthetic material of a similar type to the calendered and heated material and then passing it through another oven and calendering it again before the tensioning is relaxed.

Abstract: An apparatus is provided for manufacturing a bias fabric provided with characteristic physical properties by continuously varying the intersecting angle between the warp and the weft by a mechanical device. A fabric subjected to the invention can be any type of fabric woven on conventional looms such as satin, twill, plain and duplex fabrics.

Abstract: A self-adjusting tension-balancing roller for maintaining a substantially uniform distribution of tension across a continuously moving web, which does not cause lateral deviations of the web path while it is adjusting.

Abstract: Apparatus for forming articles by making a base of stretchable fabric, holding the base in stretched condition at opposed ends, rotating the base and coating the base with a curable plastic material.