摘要:
The invention relates to a process for producing a hollow body or cavity filled with insulating foam, wherein an expandable starting material of the insulating substance (2) is fed to a plastics extrusion apparatus (13), is activated therein under pressure and, upon discharge therefrom into the hollow body or the cavity, is expanded with such a high volume expansion gradient that the insulating substance formed by the expansion completely fills the cross section of the hollow body or cavity without delay upon entry. The invention further relates to a plastics extrusion apparatus (13).
摘要:
The invention relates to a method for coating substrates with a cross-linkable layer of polyurethane foam, wherein a composition containing a reactive PU foam precursor and at least one propellant are present in a single-use pressure container. According to the invention, said composition which is divided into droplets by spray application is discharged and a foaming of the droplets takes place after the spraying and/or during the formation of the layer, at least one part of the propellant comprising dimethyl ether and/or dimethoxymethane.
摘要:
Die Erfindung betrifft ein Verfahren zur Herstellung eines mit Dämmstoff ausgeschäumten Hohlkörpers oder Hohlraums, wobei ein expandierbares Ausgangsmaterial des Dämmstoffs einer Kunststoff-Extrusionsvorrichtung zugeführt, in dieser unter Druck aktiviert und beim Austrag aus dieser in den Hohlkörper oder den Hohlraum mit derart hohem Volumenausdehnungsgradienten expandiert wird, dass der durch die Expansion gebildete Dämmstoff den Querschnitt des Hohlkörpers oder Hohlraums beim Eintritt unverzögert vollständig ausfüllt. Sie betrifft des Weiteren eine Kunststoff-Extrusionsvorrichtung.
摘要:
Verfahren zum Beschichten von Substraten mit einer vernetzbaren Schicht eines Polyurethanschaums, wobei eine Zusammensetzung enthaltend einen reaktiven PU-Schaumvorläufer und mindestens ein Treibmittel in einem Einweg-Druckgebinde vorliegt, diese Zusammensetzung durch Sprühapplikation in Tröpfchen zerteilt ausgebracht wird, und ein Aufschäumen der Tröpfchen nach dem Versprühen und/oder bei der Ausbildung der Schicht erfolgt, wobei mindestens ein Teil des Treibmittels Dimethylether und/oder Dimethoxymethan umfasst.
摘要:
A method of forming polyurethane foam from a resin component and an isocyanate component includes the use of at least one control valve controlling a flow rate of at least one of the resin component and the isocyanate component. The method includes connecting lines having at least a 1 inch diameter to a housing of the control valve. The method also includes coupling a source of gas pressure to the line. At least one of the resin component and the isocyanate component is pressurized with the source of gas pressure to move the resin and/or isocyanate component through the line and into the flow control device at a flow rate of between 5 and 70 gallons per minute.
摘要:
A foam-in-place dispenser (10) and a porous tip (18) therefore having a frusto-conical face (48), wherein an outermost rim (56) of the tip (18) extends beyond the discharge end (14) of the dispenser (10).
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines flammgeschützten Polyurethan(PUR)-Sprühschaums, insbesondere eines PUR-Sprühhartschaums, einen so hergestellten Sprühschaumkörper und dessen Verwendung zur Wärmedämmung.
摘要:
The present invention relates to a composite containing a first plastic layer, a second plastic layer and a sprayable elastomeric polyurethane foam made from the reaction product of at least one isocyanate, at least one polyol and water, optionally at least one of blowing agents, surfactants, cross-linking agents, extending agents, pigments, flame retardants, catalysts and fillers, wherein the sprayable elastomeric polyurethane foam is sprayed onto one surface of the first plastic layer and expands to contact and adhere to one surface of the second plastic layer which is oriented parallel to the one surface of the first plastic layer and wherein the sprayable elastomeric polyurethane foam has a free rise density of from about 5 lb/ft 3 to about 25 lb/ft 3 , a reactive cream time of from about 10 seconds to about 120 seconds, an elongation of from about 30% to about 300%, a molded density of from about 25 lb/ft 3 to about 65 lb/ft 3 and a peel strength of greater than about 2.0 lb/in 2 . Such composites may find use in a variety of applications.
摘要翻译:本发明涉及包含第一塑料层,第二塑料层和由至少一种异氰酸酯,至少一种多元醇和水的反应产物制成的可喷涂弹性体聚氨酯泡沫,以及可选的至少一种发泡剂,表面活性剂 ,交联剂,延伸剂,颜料,阻燃剂,催化剂和填料,其中将可喷涂的弹性体聚氨酯泡沫喷涂在第一塑料层的一个表面上并膨胀以接触并附着到第二塑料层的一个表面, 定向平行于第一塑料层的一个表面,并且其中可喷涂的弹性体聚氨酯泡沫具有约5lb / ft 3至约25lb / ft 3的自由上升密度,约10秒至约120秒的反应性乳霜时间 ,约30%至约300%的伸长率,约25lb / ft 3至约65lb / ft 3的模塑密度和大于约2.0lb / in2的剥离强度。 这种复合材料可用于各种应用。
摘要:
A delivery assembly (1) for depositing a gasket made of polymeric material within a seat (2) having a predefined shape provided within a product (3), which comprises at least one working head (4) provided with a nozzle (5) for dispensing the polymeric material substantially in the liquid state. An increase in volume is associated with the polymeric material at the phase transition from liquid to solid; the expanded gasket, due to the increase in volume, defines by interference a stable coupling with the seat (2).
摘要:
The invention relates to the upholstery (2) of a seat element for a motor vehicle and to the method of creating it, in which method a foam support block (21) is produced to fit a frame element; a cover element (22) is created by cold-forming a foam sprayed onto a polypropylene substrate and attached on the reverse side of a textile material in the form of a skin or synthetic material to define the visible shape of the seat element; and the cover element is attached to the support block.