79results about How to "Block the passage" patented technology

The invention discloses an ultra-thin breast pad and a preparation method thereof and relates to the field of female lactation products. The ultra-thin breast pad is composed of a surface layer hydrophilic non-woven fabric, an intermediate absorbing layer and an impermeable bottom film. The surface layer hydrophilic non-woven fabric is a soft type double-component filament non-woven fabric composed of core layer PP / skin layer PE; and the intermediate absorbing layer is a hot melting non-woven fabric formed by blending core layer PP / skin layer PE and superabsorbent fibers. According to the method for preparing the ultra-thin breast pad, the surface layer hydrophilic non-woven fabric for preparing the ultra-thin breast pad is selected through a PE / PP double-component filament non-woven fabric soft bulkiness processing method, the superabsorbent fibers and the PE / PP double-component fibers are blended, the intermediate absorbing layer is prepared through a plain net hot air reinforcing method, so that the prepared ultra-thin breast pad has the advantages of being not subjected to fiber slip, being ultra-thin and breathable, having moisture breathability and being safe and healthy, and the problems that a breast pad not subjected to fiber slip is poor in comfort, unsafe, high in moisture content and high in material cost are solved.

The invention belongs to the technical field of papermaking and particularly relates to brand-new fresh-air paper and a preparation method thereof. The brand-new fresh-air paper is prepared from the following raw materials: sea-island fiber, bleached sulfate softwood pulp, bleached broad-leaf chemical wood pulp, a wet strength agent, an adhesive, a moisture-absorption additive and an aid. The brand-new fresh-air paper is good in moisture permeability and is capable of well replacing moisture; the paper is good in gas tightness and capable of blocking carbon dioxide, harmful gas and viruses; the paper is good in evenness and high in binding force, has good tear resistance and stiffness and is convenient to form; and the paper has sufficient ageing resistance and mold resistance, a formed product can be well used, and the secondary pollution is avoided.

The invention provides a circuit board, comprising a substrate, a graphic conductive layer on the substrate, and a protective film located on the conductive layer and covering the substrate, wherein the protective film is a shading protective film, and the shading protective film is used for blocking light from passing through the circuit board. According to the circuit board and a camera module thereof, the protective film is a shading protective film which can block light from passing through the circuit board, thereby reducing the light transmittance of the circuit board, avoiding light leak of the camera module and improving the imaging quality of the camera module.

The invention discloses a visible anti-clogging device for a sewer. The anti-clogging device comprises a connecting pipe which can be connected with the inside of a sewer line, and an observation opening is formed in the lateral side of the connecting pipe; the visible anti-clogging device for the sewer further comprises an anti-clogging base which is in detachable connection with the observation opening in a matched mode, and an anti-clogging ball which can stretch into the connecting pipe, make water pass but block large wastes is rotationally connected with the anti-clogging base; an observation hole through which the anti-clogging ball can be observed is formed in the anti-clogging base, and a transparent cover is arranged on the observation opening, wherein the anti-clogging base can be covered with the transparent cover, and the transparent cover and the anti-clogging base can seal the observation opening together. When the large wastes inflow from the upper side of the connecting pipe, the anti-clogging ball can stop the large wastes from passing, and keep the large wastes above the anti-clogging ball, and the anti-clogging ball also can make long-strip-like wastes wound, so that the large wasters or the long-strip-like wastes are prevented from flowing into and clogging the sewer; the conditions of the anti-clogging ball in the connecting pipe can be seen through the transparent cover and the observation hole, the anti-clogging ball can be taken down in time to clean the wastes, and the water channel in the anti-clogging device is dredged in time.

The invention discloses a catering oil-water separating device and belongs to the field of catering equipment. The catering oil-water separating device sequentially comprises a first oil removing areaand a second oil removing area from left to right, wherein a water inlet is formed in the upper part of the left side of the first oil removing area; a water outlet is formed in the upper part of theright wall of the second oil removing area; a first retaining wall is arranged between the first oil removing area and the second oil removing area; an opening is formed in the lower part of the first retaining wall; a fiber board filtering material is arranged on the opening and is a polyester fiber board of which the surface is subjected to polypropylene grafted modification treatment; one surface, subjected to grafted modification treatment, of the polyester fiber board, is arranged on one side of the first oil removing area. The catering oil-water separating device disclosed by the invention has the beneficial effects that one surface, subjected to grafted modification treatment, of the polyester fiber board, is arranged on one side of the first oil removing area, so that after an oil-absorbing group absorbs oil, a layer of thin film can be formed on the surface of the fiber board to stop grease from passing.

The invention discloses an electrodialysis apparatus. The electrodialysis apparatus comprises a plurality of individual filter channels, wherein each individual filter channel comprises a cathode plate and an anode plate which are arranged oppositely to each other, and a first cation exchange membrane and a first anion exchange membrane which are arranged between the cathode plate and the anode plate. Since the surface of the anode plate is provided with the cation exchange membrane, the passing of anions can be blocked, and the corrosion of the anode plate is prevented; and since the surface of the cathode plate is provided with the anion exchange membrane, the passing of cations can be blocked, and the corrosion of the cathode plate is prevented.

A suspension cord control mechanism composed of an arresting mechanism and a biasing mechanism operable to move a light blocking element after the user has released a suspension cord. The biasing mechanism is loaded when the suspension cord is drawn by a user to lift the window covering. When the suspension cord is released, movement of the cord is stopped by the arresting mechanism and the biasing mechanism unloads to further move the light blocking element.

The invention relates to a heavy metal electric welding protective lens with uvioresistant and anti-infrared function used on a welding mask, which is prepared by the following material according to parts by weight: 60-80 parts of quartz sand, 6-10 parts of ferric oxide, 1-4 parts of cerium oxide, 0.5-2 parts of cobalt oxide, 8-10 parts of calcined soda, 3-5 parts of calcite, 1-2 parts of nickel oxide and 2-5 parts of manganese powder, and has the advantages of uvioresistant and anti-infrared. The invention can resist the infrared, the ultraviolet radiation and the harmful light, and visible light can be passed, simultaneously, the visible light of a welding object filtered by the lens of the invention can be comfortably observed by welder, the ultraviolet transmittance of the invention is between 313nm to 365nm, and the infrared transmittance is between 780nm to 1300nm or 1300nm to 2000nm, thus conforming with the requirement of national standard.