▎ 摘　　要

NOVELTY - Multifunctional automobile ceiling fiber cover comprises a metal fiber base layer (2) is arranged in the middle part as a shaping support. The inner part of the metal fiber base layer is covered with a composite inorganic powder layer (1). The elastic connection supporting ribs are arranged between the composite inorganic powder layers wrapped in the metal fiber base layer. The outer side of the metal fiber base layer is provided with an elastic plate layer (3). The upper side of the elastic plate layer is provided with an elastic honeycomb net layer and the lower side is provided with a double-component cotton layer (4). A waste textile fiber layer (5) is provided on the outer sides of the double-component cotton layer and the elastic honeycomb mesh layer. A fiber covering member is arranged as a non-woven fabric layer on the outside of the waste textile fiber layer and the non-woven fabric layer forms a sealing edge for the whole sound-absorbing and sound-insulating pad. USE - Used as multifunctional automobile ceiling fiber cover. ADVANTAGE - The fiber cover utilizes the composite inorganic powder as the base layer and wraps the metal fiber on surface and attaches an elastic material, so as to ensure the elasticity of the inner layer of the sound insulation pad and realize the heat conduction and heat dissipation of the automobile ceiling; wraps the elastic honeycomb net with strong sound absorption and sound insulation, waste textile fibers, double-component cotton and other materials for strong sound absorption and sound insulation which ensures the use effect of the sound insulation pad; can dissipate the heat inside the cover in time to prevent the automobile ceiling and the cover from being deformed and burst due to heat and greatly improves the sound-absorbing and sound-insulating effect. DETAILED DESCRIPTION - Multifunctional automobile ceiling fiber cover comprises a metal fiber base layer (2) is arranged in the middle part as a shaping support. The inner part of the metal fiber base layer is covered with a composite inorganic powder layer (1). The elastic connection supporting ribs are arranged between the composite inorganic powder layers wrapped in the metal fiber base layer. The outer side of the metal fiber base layer is provided with an elastic plate layer (3). The upper side of the elastic plate layer is provided with an elastic honeycomb net layer and the lower side is provided with a double-component cotton layer (4). A waste textile fiber layer (5) is provided on the outer sides of the double-component cotton layer and the elastic honeycomb mesh layer. A fiber covering member is arranged as a non-woven fabric layer on the outside of the waste textile fiber layer. The non-woven fabric layer forms a sealing edge for the whole sound-absorbing and sound-insulating pad. An aluminum foil edge seal is provided at the sealing edge of each layer of the fiber cover An INDEPENDENT CLAIM is also included for preparing multifunctional automobile ceiling fiber cover comprising (a) mixing the raw materials composed of composite inorganic powder layer (1) uniformly, grinding for the second time, sieving with 0.2-0.5mm sieve, uniformly mixing, compacting the powder layer by a specific mold to obtain the thin layer with the thickness of 3-4 mm, inserting a circular hole or a square hole with a diameter larger than the diameter of the elastic connection supporting rib into the thin layer, ensuring that the powder layer does not deform, fall off or crack, inserting the elastic connection supporting rib into the hole, ensuring that the elastic connection supporting rib is longer than the thickness of the composite inorganic powder layer, (b) cutting each fiber of the metal fiber layer into 1-5 cm of short fiber, mixing uniformly, using a high pressure forming machine for high-pressure compression molding, pressing and synthesizing into a thin metal fiber layer of 1-5 mm, polishing one side of the thin metal fiber layer flat, sandwiching the composite inorganic powder layer one with elastic connection supporting ribs obtained in step (a) on two thin metal fiber layers with the flat side facing inward, laminating the composite layers to ensure that the composite inorganic powder layer is not pressed out after the elastic connecting supporting ribs are flattened, (c) melting the each constituent raw material of the elastic plate layer to form a melt, placing the composite layer obtained in step (b) vertically in a specific mold, cooling the melt to semi-solidified, adding into the mold, cooling to solidify the melt without invading the metal fiber layer, pressing the elastic plate layer and the metal fiber layer under low pressure, trimming, setting the thickness of the elastic plate layer to 2-5 mm, (d) melting, melt-blowing the constituent raw materials of a double-component cotton layer with double-hole orthogonal electrostatic spinning melt-spraying to form the melt-blown double-component cotton layer, pressing while hot to obtain a double -component cotton layer with a thickness of 2-5 mm, curing, forming, coating one side with adhesive, bonding the double -component cotton layer to the lower side of the composite layer obtained in step (c), melting the constituent raw materials of the elastic honeycomb mesh layer to form a melt, forming an elastic sheet with honeycomb holes by casting through a specific honeycomb hole mold, stacking the multi-layer elastic sheets in a staggered position, pressing together under low pressure to obtain an elastic honeycomb mesh layer of 2-5 mm, coating the obtained elastic honeycomb mesh layer with adhesive, bonding to the upper side of the composite layer obtained in step (c), (e) cutting the waste textile fiber layer into short fibers of 2-4 cm, uniformly pressing the mixture to form a waste textile fiber layer of 2-4 mm, stacking the waste textile fiber layer and the non-woven fabric layer on the upper and lower sides of the composite layer obtained in step (c), performing high-pressure compression molding, sealing the non-woven fabric, covering the inner layer by non-woven fabric, stacking the cut aluminum foil edge sealing on the edge sealing of the non-woven fabric layer of the heat sealing edge, wrapping the edge sealing, inserting the through-heating rod, pressing again under high pressure, so that the through-heating rod is fixed with the aluminum foil sealing edge and obtaining fiber cover by making the inner layers of the fiber cover not move or deform. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional structure of the multifunctional automobile ceiling fiber cover. Composite inorganic powder layer (1) Metal fiber base layer (2) Elastic plate layer (3) Double-component cotton layer (4) Waste textile fiber layer (5)