574results about How to "Reduce sagging" patented technology

Disclosed is a biaxially stretched multilayer polypropylene film wherein a front layer and back layer composed of a propylene polymer (a1) are respectively arranged on both sides of a biaxially stretched polypropylene film base layer (B) which is composed of a propylene polymer composition (A) obtained by adding an inorganic compound powder (a2) to the propylene polymer (a1). This biaxially stretched multilayer polypropylene film is characterized in that the front and back layers have a surface roughness (three-dimensional center plane average roughness SRa) of less than 0.08 [mu]m and a glossiness (incident angle: 60 degrees) of not less than 114%, and the multilayer polypropylene film has a total light transmittance of not more than 20% and a density of 0.40-0.65 g / cm<3>.

The present invention relates to propylene-based nonwoven layers made by the meltblown process, and laminates incorporating such layers. The meltblown layers of the present invention comprise propylene copolymers characterized by having less than 50 percent crystallinity. The meltblown layers of the present invention show an improved combination of extensibility and tensile strength. The laminate structures of the present invention are characterized by a combination of low bending modulus with high peel strength.

The embodiment of the invention provides a mask plate assembly, an installation method thereof and an evaporation device, and relates to the technical field of display. The offset of the mask plate when a mask plate is attached to a backboard can be reduced, and then the product yield is improved. The mask plate assembly comprises a supporting frame and the mask plate fixed to the supporting frame. The mask plate comprises an effective mask area and an ineffective mask area surrounding the effective mask area. The mask plate assembly further comprises a first supporting strip fixed to the supporting frame. The first supporting strip is arranged on the side, away from the supporting frame, of the mask plate, the projection of the first supporting strip in the plane where the supporting frame is located and the projection of the mask plate in the plane where the supporting frame is located have a first overlapped part, and the first overlapped part is located in the projection area of the ineffective mask area in the plane where the supporting frame is located.

A display device includes a display part made of a roll-up sheet-like direct-view display element; a take-up part attached on one end of the display part, the take-up part allowing the display part to be rolled up; a pulling part attached on the other end of the display part, the pulling part allowing the display part to be roll out; and a holding part for holding the display part from behind. The holding part is formed of linkage, which can be stored on the rear surface of the display part when the display part is rolled up, and can be stretched across the rear surface of the display part when the display part is rolled out. This enables the holding part to be stretched across the rear surface of the display part when the display part is spread out so as to prevent the display part from swaying, thereby maintaining excellent display.

Die (110) and / or undiced wafers and / or multichip modules (MCMs) are attached on top of an interposer (120) or some other structure (e.g. another integrated circuit) and are covered by an encapsulant (160). Then the interposer is thinned from below. Before encapsulation, a layer (410) more rigid than the encapsulant is formed on the interposer around the die to reduce or eliminate interposer dishing between the die when the interposer is thinned by a mechanical process (e.g. CMP). Other features are also provided.

The present invention provides a for the precise finish of an optical fiber connector with lasting abrasive power and high life time, a preparing method thereof and an application thereof, and can strengthen self-shaping. The granulation polishing film comprises base material and an abrasive layer coated at the surface of the base material, wherein the abrasive layer comprises resinoid bond and composite abrasive grains in global coacervate; the composite abrasive grains are global coacervates prepared by granulating abrasive powder distributed in the mixing liquid of metal oxide sol and organic or inorganic binder; the resinoid bond comprises epoxide resin and epoxide resin toughener, and also comprises one or several kinds of polyester, polyurethane, daiamid, acrylate and polyurea. The granulation polishing film is used for the grinding finish of the optical fiber connector and optical fiber arrays. The life time is one to two times longer than that of the traditional polishing film for the finish of the optical fiber connector, and the processing cost of the optical fiber connector is reduced.

The invention relates to novel corrosion-resistant alloy steel continuous casting powder and application thereof, and belongs to the technical field of continuous casting of iron and steel. The casting powder comprises the following components in mass percentage: 17 to 25% of CaO, 23 to 31% of SiO2, 10 to 15% of Al2O3, 1 to 4% of MgO, 10 to 14% of (Na2O+Li2O), 1 to 8% of B2O3, 1 to 6% of TiO, 4 to 8% of BaO, and 10 to 13% of F<->. The casting powder has the characteristics that the melting point is small (865-988 DEG C), the viscosity is small (0.11-0.23Pa.s under 1,300 DEG C), the crystallizing rate is moderate (40-70%), etc. The casting powder can be applied well to the continuous casting of corrosion-resistant alloy steel (Fe-Cr-Ni system) containing 0 to 0.3% of Al and 0.8 to 1.1% of Ti in mass percentage.

A device for providing protection against minor head injury and for stabilizing a hat is provided. The device moves from a generally flat first orientation into a domed-shaped second orientation. In the second orientation, the device is placed under the underside of a hat and supports the hat in an upright position. The device may be placed under a hat for protection and / or to store the hat in an upright position for display and to reduce the sagging of the hat over time. Further, the device may be placed under a hat and the hat worn. The device has a plurality of radially extending arms extending from a center portion. The perimeter surface of the device may be partially inserted within a groove of the hat so as to allow the device to remain secured within the hat. The device is also suitable for providing some protection against head injury when the device is properly worn under a hat.

A spool filled with two or more elongated elements such as steel cords wound in parallel and in several windings upon the spool. The distances between two neighboring elongated elements, as measured along a line parallel to the axis of the spool, is not more than 10 mm along 90% of the length of each elongated element.

An improved bicycle wheel is disclosed which has reduced dish by comparison with a conventionally laced wheel. The wheel is one which, when laced conventionally, would be dished such as a rear wheel with at least one sprocket or a front wheel with a brake disk. In a rear wheel embodiment, the spokes extend from inside to outside, through a proximate hub flange and along the outside or sprocket surface of the proximate hub flange and from outside to inside through the opposed hub flange and along the inside or sprocket surface of the opposed hub flange. In a front wheel embodiment, the spokes extend from inside to outside through the proximate hub flange along an inside or disk surface thereof and from outside to inside through the opposite hub flange and along the inside or disk surface thereof. The spokes in a given flange of a hub according to the present invention are all secured to the hub flange at substantially the same axial location relative to the axis of rotation of the hub or have spoke elbows which are all at substantially the same axial location relative to the axis of rotation of the hub. As a consequence of the reduced dish there is a reduction in the tension differential between the proximate spokes and the opposed spokes. According to another aspect of the invention, spoke bores in each of the hub flanges are grouped into pairs and the circumferential distance between adjacent pairs is greater than the distance between bores in a given pair.