Abstract

A manufacturing method for an inner core material used for a vacuum insulation panel comprises the following steps: manufacturing non-woven fabrics from multiple glass fibers and low-melting-point organic fibers by utilizing a dry non-woven process, in the step, most of the multiple glass fibers extending in a direction basically parallel to surfaces of the manufactured non-woven fabrics; and laminating the multiple non-woven fabrics. The inner core material manufactured by using the method has an excellent heat insulation performance, and the manufacturing method is simple in production process and low in cost.

IPC Classes  ?

• F16L 59/07 - Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
• F16L 59/065 - Arrangements using an air layer or vacuum using vacuum
• B32B 17/02 - Layered products essentially comprising sheet glass, or fibres of glass, slag or the like in the form of fibres or filaments
• D04H 1/54 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving

Abstract

A core material used for a vacuum heat-insulation plate is formed by laminating multiple non-woven fabrics. The non-woven fabrics comprise glass fibers and low-melting-point organic fibers, and can be produced and manufactured by using a dry non-woven process. In the non-woven fabrics, most of the glass fibers extend in the direction basically parallel to the surfaces of the non-woven fabrics. The core material used for a vacuum heat-insulation plate has excellent heat insulation performance, a simple production process and low cost.

IPC Classes  ?

• F16L 59/02 - Shape or form of insulating materials, with or without coverings integral with the insulating materials
• F16L 59/065 - Arrangements using an air layer or vacuum using vacuum
• F16L 59/07 - Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation

Abstract

An encapsulation method for a vacuum insulation panel: step one: placing a filling core material 90 between an upper barrier film 91 and a lower barrier film 92 under the condition of vacuum, and compressing the filling core material to a preset position; step two: pressing the upper barrier film, which extends out of the filling core material, down onto the lower barrier film to fix and smooth the upper barrier film and the lower barrier film; and step three: sealing the upper barrier film which extends out of the filling core material and the lower barrier film. The encapsulation method for a vacuum insulation panel can not only increase the encapsulation efficiency and decrease costs, but can also guarantee the requirement of vacuum degree, and also provides an encapsulation device for realizing the above-mentioned encapsulation method.

IPC Classes  ?

• F16L 59/065 - Arrangements using an air layer or vacuum using vacuum

Abstract

A method for manufacturing a vacuum insulation panel, comprising the steps as follows: step one: baking a core material (1) for dehydration in an atmospheric state; step two: placing the core material (1) and a barrier film (2) into a vacuum chamber (3) for evacuation to meet the requirements of vacuum degree for making a vacuum insulation panel; step three: cladding the barrier film (2) on the surface of the core material under the condition of vacuum, and sealing the barrier film (2) by heating; and step four: taking the vacuum insulation panel out of the vacuum chamber (3) by deflating. This method sends the core material (1) after baking directly into the vacuum chamber (3) so as to expose the core material (1) and the barrier film (2) to a vacuum environment. With respect to the requirements for acquiring the same vacuum degree, the evacuation time is shortened by 20 times and the production efficiency is greatly increased.

IPC Classes  ?

• F16L 59/065 - Arrangements using an air layer or vacuum using vacuum
• B32B 37/10 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using direct action of vacuum or fluid pressure

Abstract

Provided are a biologically soluble fibre felt, a preparation method therefor and a vacuum insulation panel using the felt. The felt is a fibre felt containing a biologically soluble fibre, wherein the biologically soluble fibre is 85-100 wt% and a curable adhesive is 0-15 wt%; the biologically soluble fibres are twined or overlapped with each other and an interlace-distributed in a monofilament form, and the extension directions of the minority of them are close to the thickness direction of the felt; the adhesive is dispersed between the monofilaments and tightly adheres thereto, and is not presented alone; and the biologically soluble fibre has a mean fibre diameter of ≤ 30 μm and a mean fibre length of ≤ 250 μm. The hazard of fibre dust produced during preparing or using the fibre felt on human body can be effectively avoided or reduced.

IPC Classes  ?

• D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
• C03C 3/11 - Glass compositions containing silica with 40% to 90% silica by weight containing halogen or nitrogen

Abstract

A fiber mat comprises 50 to 100 (the weight ratio to a dried fiber mat, similarly hereinafter) glass fiber chopped strand, and one or more of other inorganic fibers except the glass giber chopped strand, natural fibers, synthetic fibers, artificial fibers and radiation proof materials. The ratios are that: the other inorganic fibers except the glass giber chopped strand account for 0.1 to 30, the natural fibers account for 0.1 to 30, the synthetic fibers account for 0.1 to 30, and the artificial fibers account for 0.1 to 30. Preparation is performed by using a needle point method, a hydroentanglement method, a thermal calendaring method, a wet forming acid method, a wet forming thickener method and a wet forming gel method. The preparation method for the fiber mat is provided. With the same manner being used, reduction of the heat conductivity coefficient of a vacuum heat-insulated plate using the fiber mat obtained through the present invention as a core material reaches 25% to 65%, achieving the desirable effect of heat preservation and heat insulation.

IPC Classes  ?

• D04H 1/00 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
• D04H 5/00 - Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length

Abstract

A composite getter for maintaining medium and low vacuum environment comprises an elemental metal powder getter (3), an alloy powder getter (2), a drying agent powder (1) and a plastic film (4), wherein the elemental metal powder getter (3) and the alloy powder getter (2) are present respectively as one layer and stacked in the center position of the drying agent powder (1) to form a core-clad structure, which is packed in the plastic film (4). The elemental metal powder getter (3) is one or a combination of at least two selected from the group consisting of reduced iron powder, nickel powder and copper powder with a grain size range from 10 to 200 μm. The alloy powder getter (2) is one or a combination of at least two selected from the group consisting of strontium-lithium alloy powder, barium-lithium alloy powder and barium-magnesium alloy powder with a grain size range from 50 to 500 μm. The drying agent powder (1) is one or a combination of at least two selected from the group consisting of calcium oxide powder, strontium oxide powder and barium oxide powder with a grain size range from 20 to 200 μm. The plastic film (4) is breakable automatically under a pressure difference of one atmosphere. The performance properties of this composite getter is not affected when exposed to air for a short period of time. The method for producing the composite getter is also disclosed.

IPC Classes  ?

• B01J 20/02 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material
• H01J 9/39 - Degassing vessels
• H01L 23/26 - Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device including materials for absorbing or reacting with moisture or other undesired substances

Abstract

A kind of core material for vacuum insulation panel, its manufacturing method, and a vacuum insulation panel used the core material. The core material is flaky and thermally insulated supporting material composed by combination of super-fine glass wool and one or two of centrifugal cotton and mineral wool, according to a certain weight ratio. The core material is manufactured by adding centrifugal cotton and/or mineral wool to super-fine glass wool. Compared with the core material and the vacuum insulation panel made of single super-fine glass wool in the prior art, the manufacturing cost of the core material and the vacuum insulation panel is significantly reduced, meanwhile, the core material and the vacuum insulation panel still retain the advantages of high strength and low heat conductivity.

IPC Classes  ?

• F16L 59/065 - Arrangements using an air layer or vacuum using vacuum