84 results about "Method seal" patented technology

Sealing assemblies to provide sealing between a shaft and a housing comprising a sealing component comprising a body section as well as an outer flange and an inner flange both extending from said body section; a supporting component receiving said sealing component and comprising a relatively thick inner arm projecting into said sealing component and providing a supporting area spanning an inner portion of said body section and a portion of said inner flange; an anti-extrusion component engaged with said relatively thick inner arm; the minimum clearance between said anti-extrusion component and said shaft being less than the minimum clearance between said relatively thick inner arm and said shaft; said inner flange comprising a sealing area; wherein said sealing assembly is to be received in a cavity in said housing or on said shaft.

A method of forming a MEMS device provides a wafer having a base, a first conductive layer, a second conductive layer, and an intermediate conductive layer. After it provides the wafer, the method removes at least a portion of the intermediate conductive layer to form a cavity between the first and second conductive layers. At least a portion of the first conductive layer is movable relative to the base to form a diaphragm, while the second conductive layer is substantially immovable relative to the base. After it forms the cavity, the method seals the cavity.

[Problems to be solved] The present invention provides a sealing sheet that can be used instead of the sealing sheet made from the conventionally widely used EVA, which has good transparency, heat resistance and adhesiveness with a polypropylene resin, and good productivity.

[Means to solve the problems] The sealing sheet (I) is made from a thermoplastic resin composition comprising

• • 0 to 90 parts by weight of a propylene polymer (A) having a melting point, as measured by a differential scanning calorimeter, of 100° C. or higher, and
  • 10 to 100 parts by weight of a propylene copolymer (B), wherein the copolymer is formed from propylene, and at least one olefin selected from the group consisting of ethylene and α-olefins having 4 to 10 carbon atoms, and the copolymer has a shore A hardness of 30 to 80 and has a melting point, as measured by a differential scanning calorimeter, of 100° C. or lower or has no melting point to be observed (with the total of (A) and (B) being 100 parts by weight), wherein the thermoplastic resin composition has a permanent compression set, as measured at 23° C., of 5 to 35%, and a permanent compression set, as measured at 70° C., of 50 to 70%.

Sealing device for laterally sealing of at least one overpressure zone and vacuum zone in a paper machine and process for sealing a moving surface with the sealing device. The sealing device includes a moving surface adjacent to the at least one overpressure zone and vacuum zone, at least one sealing element positioned opposite the moving surface, a holder in which the sealing element is mounted for movement relative to the moving surface, at least one loading element arranged to load the sealing element in a direction toward the moving surface, and at least one reset element arranged to act against the at least one loading element and to move the sealing element away from the moving surface. A sealing gap formed during operation between the sealing element and the moving surface is set by at least one of the reset element and the loading element. The process includes pressurizing the at least one loading element to press the sealing element against the moving surface, and pressurizing the at least one reset element to press the sealing element against the at least one loading element and in a direction away from the moving surface, whereby a gap is formed between the sealing element and the moving surface.

The invention relates to the technical field of heavy oil thermal recovery, especially a method for exploiting thick-layer heavy oil reservoir by in situ combustion assisted gravity drainage. The method comprises the following steps: firstly, under condition that the existing well network is not exchanged, sealing the penetrated perforation in the middle-upper part of the production well by cement slurry or packer; setting aside a 10-meter perforation segment for releasing oil in the lower part of the oil layer; keeping 10 meters of the upper parts of the air injecting well and the combustion perforation, sealing the lower ground layer by cement or packer, so as to form the in situ combustion assisted gravity drainage well network; heating the air in the air injecting well to higher than the threshold temperature of the high-temperature oxidation reaction of the crude oil by formation preheating or electric heater; according to the designing requirement, continuously injecting the air into the formation, so that the crude oil can flow outside from the lower perforation oil discharging channel of the production well; the crude oil is lifted to ground by using a lifting device. The invention realizes small limit on reservoir depth, the gas channeling is reduced and the crude oil output is increased.

An extended text label is provided for a tube container, wherein the tube container includes a product dispensing end and a filling end opposite the product dispensing end. A crimp method seal is provided at the filling end that is crimped subsequent to filling the tube container with a selected product. An extended text label is then securely joined to the filling end of the tube container after the tube container is crimped shut, in a two-step operation.

Disclosed is a pipe fitting specifically designed for repair applications called a Repair Pipe Fitting. One or more of the arms (inlets or outlets) of a Repair Pipe Fitting is longer than the corresponding arm on a standard pipe fitting, so that connecting pipes that have been cut to remove a standard pipe fitting do not have to be extended to install a Repair Pipe Fitting. Repair pipe fittings are best suited for use with plastic pipe, where joints are sealed with cement, although Repair Pipe Fittings may also be used with metal pipe, where joints are sealed with welds or threads. Repair pipe fittings may be sealed using the same sealing method as used by the original fittings, such as cement for plastic fittings and pipes. Repair pipe fittings may also be sealed using a non-permanent sealing method such as compression caps and gaskets.

The present invention provides a magnetic field sealing method of air-gap. It is characterized by that on the air-gap of fixed body to be sealed a sealing groove correspondent to contact surface of mobile body is set, in the sealing groove bottom portion a magnetic field source is set, the groove interior is filled up with magnetic sealing medium to form magnetic field. The invented magnetic field flexible sealing theory is characterized by that in the air-gap to be sealed a magnetic field is created, the contact surface of said air-gap is filled up with magnetic sealing medium, under the action of magnetic field in the air-gap said magnetic sealing medium can be stably stored in the sealed air-gap, so that said sealed portion can obtain 'zero' leakage.

A deep-drawing packaging machine that includes a sealing station and a method for changing the sealing frame together with the sealing plate at the sealing station. The sealing station includes a sealing plate and a sealing frame. The sealing plate may be releasably coupled to an upper sealing tool part, and the sealing frame may be slidably removable at a lower sealing tool part. The sealing frame may be slidable on rails. The sealing frame may include one or more centering aids for aligning the sealing plate with respect to said sealing frame during removal thereof. The centering aids may be displaceable underneath a film web by the upper sealing tool part during the clamping of the film web between the sealing frame and the upper sealing tool part.

The present invention discloses one kind of pressure balancing seal method. In measurement environment, the pressure difference between inside the measuring tool and outside the measuring tool is reduced to realize the seal of the measuring tool. The present invention discloses also one kind of sensor operating on the pressure balancing seal method, and the sensor includes sensor cavity and sensing element set on the inner wall of the cavity. On the outer surface of the sensing element, a sealing film of waterproof elastic polymer material and a metal net over the film are coated, and the sealing film has its edges fixed to the inner wall of the cavity by means of sealing unit. The present invention ensures the basically identical pressure between the inside of the measuring tool cavity and the outside to avoid leakage, and the measuring tool in the said sealing method has simple structure, long service life and high measurement precision.

[Problem] The aim of the invention is to provide a method of sealing an electronic element such as an organic EL element using a normal temperature bonding method that enables bonding at low temperature and in which permeation of external gases such as hydrogen or oxygen through the sealed section (dam) formed by the organic material, or the junction interface of the sealed section and a cover substrate is suppressed. [Solution] A method of sealing an electronic element comprises a step of forming a sealing section by forming a sealing section including an organic material on the surface of a first substrate formed with the electronic element, surrounding this electronic element with a thickness that is larger than that of this electronic element; a step of forming a first inorganic material layer in which a first inorganic material layer is formed at least on the exposed surface of this sealing section; and a substrate bonding step of bonding the first substrate and the second substrate by pushing together the sealing section of the first substrate and the junction location of the second substrate.

Sealing systems and related methods are provided. In this regard, a representative sealing system includes: an elongated seal having a contact surface configured to form an airtight seal with an inner surface of the drum; contact sensor circuitry configured to provide an electrical signal containing information indicative of direct contact between the seal and the inner surface of the drum; and a control actuator configured to direct a flow of lubricant responsive to receiving the information from the contact sensor indicating direct contact such that the flow of lubricant forms a film of lubricant between the contact surface and the inner surface of the drum to prevent direct contact between the seal and the drum.

A method for cleaning hard surfaces at the micro level incorporates a two-phase process that initially cleans a surface and then seals the surface. The cleaning phase implements a cleaning solution that penetrates the surface of equipment and removes dirt and debris at the micro or nana level of the equipment. The sealing phase of the method seals the surface of equipment such that gaps at the micro level are filled in to prevent debris from accumulating at the micro-level of the surface of the equipment. The sealed surface provides improved aerodynamic flow of air across the hard surface.

The invention provides a designing and manufacturing method and a sealing method of a sealing structure of an oil well pipe joint. The manufacturing method comprises the steps of according to a presetrule that a sealing performance evaluation parameter is larger than or equal to a corresponding sealing performance safety allowance of an oil well pipe, determining a sealing surface contact pressure stress, a sealing structure material elasticity strain capacity, sealing structure material strength and a sealing surface contact width of the oil well pipe; according to the sealing performance safety allowance of the oil well pipe, enabling the sealing structure material elasticity strain capacity to be larger than 0.5%; according to the sealing surface contact pressure stress, the sealing structure material elasticity strain capacity and the sealing structure material strength, determining a used material of the sealing structure; according to the determined sealing structure material elasticity strain capacity, determining the used material of the sealing structure as a hyperelastic alloy material with the elasticity strain capacity being larger than 0.5%; and manufacturing the sealing structure according to the used material and the elasticity strain capacity thereof. By utilizing the designing and manufacturing and the sealing method of the sealing structure of the oil well pipe joint provided by the embodiment of the invention, the reliability of a sealing performance of the oil well pipe joint is improved.

A non-reactive hot melt adhesive containing a copolymer being substantially composed of a reaction product of lactide (L) and caprolactone (C) in a molar ratio (L/C) of at least 1.5. The adhesive further includes a carbodiimide compound. The presence of a small but effective amount of carbodiimide causes a stabilizing effect on the sealing properties of the adhesive, especially if it is exposed to higher temperatures. A method manufactures the adhesive and a method seals a package with the adhesive.

A seal device includes a seal member configured to seal a first component and a second component and a tab member formed on a seal member perimeter. The tab member is configured to extend substantially outward from the seal member perimeter to a respective component perimeter. The seal member and the tab member are formed from a mixture of a seal compound and a characteristic changing compound. The tab member is configured to provide a visual indication of seal integrity without separating the first component and the second component.