Abstract:
A backup board for use in a machining process includes a fibrous layer, at least one side of the fibrous layer being provided with a surface layer adhered and laminated thereon, wherein the surface layer is made of a cured paper impregnated with a thermosetting resin. The fibrous layer has a density of about 600 - 900 kg/m 3 and includes kenaf fibers adhered together by impregnating a thermosetting adhesive into a fibrous mat of the kenaf fibers, the kenaf fibers having an average length of about 10 - 200 mm and an average diameter of about 10 - 300 pm.
Abstract translation:在加工过程中使用的备用板包括纤维层,纤维层的至少一侧设有粘附并层压在其上的表层,其中表面层由浸渍有热固性树脂的固化纸制成。 纤维层的密度约为600-900kg / m 3,并且包括通过将热固性粘合剂浸渍到洋麻纤维的纤维垫中而粘附在一起的洋麻纤维,该洋麻纤维的平均长度 约10-200mm,平均直径约10-300μm。
Abstract:
A sheet comprising thermoplastic polymer (TP) (4) and short high tensile modulus fibers (3) , in which the concentration of TP (4) in the middle of the sheet is higher than at the surface of the sheet, useful for making prepregs with a thermoset resin.
Abstract:
The present invention relates to a nonwoven substrate, and specifically to a nonwoven substrate imparted with a three-dimensional image, wherein the three-dimensional nonwoven substrate is particularly suited as a support substrate for a PCB (printed Circuit Board) and similar application. The nonwoven substrate is formed from a precursor web (P) which undergoes entangling treatment by entangling manifolds (16, 20, 24'). By the utilization of a hydroentangled, three-dimensionally imaged support substrate impregnated with a durable resinous matrix, PCB's, and similar applications, can be imparted with unique and useful performance properties, to improve structural performance.
Abstract:
A polyolefin composite for a printed circuit board or an antenna base material. A base material (12) including the composite and electronic modules including the base material (12). The base material includes at least one dielectic layer including a polyolefin composite and at least one electroconductive layer (16) including an electroconductive material, the dielectric and electroconductive layers being intimately bonded to one another through an adhesive (14).
Abstract:
A type of fiber paper is provided that is made of completely aromatic polyamide fiber formed by means of liquid crystal spinning. The fiber paper can be used as the base material of a substrate for electric circuit, and it can display high reliability in electric insulation under a high humidity, excellent post-heating dimensional stability, and high heat resistance.
Abstract:
A laminated board comprising an insulating layer having both a strength suitable for a structural body and a machinability good enough to make a via hole therein. The laminated board comprises an insulating layer and a conductive layer. The insulating layer includes a simple layer in close contact with the conductive layer and containing a resin component not containing inorganic long fibers and a composite layer in close contact with the opposite side of the simple layer to the conductive layer and containing a resin component and an organic long fiber component. The laminated board has a bottomed hole extending through the insulating layer, having its bottom which is the conductive layer, and made by a laser beam.