Question 1

How a vacuum slows down heat transfer?

Accepted Answer

There are three modes of heat transfer: conduction, convection, and radiation, and if we remove most of the air molecules from a space-as occurs when we draw a vacuum-we largely eliminate the first two of those heat transfer mechanisms. Conduction is the flow of heat from molecule to molecule. It's the reason a cast iron skillet handle heats up, but thermal conduction also occurs across a layer of air, as kinetic is transferred from one air molecule to the one next to it. If we remove most of th

Question 2

Is it possible to work with vacuum insulation panels the same way as with conventional insulation materials?

Accepted Answer

The high barrier film around the vacuum panel should not be damaged. If the plastic film is punctured and air flows in, the thermal conductivity rises up to 0.020 W/mK. Therefore it is not possible to cut vacuum panels to the appropriate size on site. Equally it is not possible to puncture them with dowels or similar items. Beside these limitations, vacuum panels can be glued to other surfaces or integrated into different constructions with appropriate covers.

Question 3

Is it possible to make curved vacuum insulation panels?

Accepted Answer

In general, thin vacuum panels can be bent into cylindrical forms within some limitations. The thinner the panel, the smaller the possible curvature radii. Regular vacuum panels cannot be formed into complex forms with two-dimensional curvatures like spherical parts or similarly complicated shapes. However, new technologies allow us to produce more complex shapes, even panels with holes. Please contact us for details if you have special requirements.

Question 4

Are vacuum panels sensitive to humidity?

Accepted Answer

Short term exposures of high humidity don't cause any problems to the used films of the vacuum panels. However they should not be exposed to high humidity for longer periods of time, especially in combination with high temperatures. Therefore, it is advisable to install humidity barriers in such a way that the vacuum insulation panels are kept dry.

Question 5

What's the regular package?

Accepted Answer

Flexible packing according to the specific requirements of the clients.PE bag plastic packaging (roll / bag) / woven bag packaging(roll / bag)--pallet packaging PE bag plastic packaging (roll / bag) / woven bag packaging(roll / bag)--Bulk

Question 6

DO YOU HAVE A minimum QTY?

Accepted Answer

Our MOQ is 500sqm.

Question 7

Delivery time delay?

Accepted Answer

If the goods are in stock, it usually takes 5-10 days. If the goods are not in stock, it will take 15-20 days, depending on the quantity. Usually within 30 days.

Question 8

Can I order a small qty or less container to start ?

Accepted Answer

It's welcome for any quantity, we support small clients growing. If you are an end user, it would save you money because we are factory direct selling. But if you are buying these products for resell or wholesale, as these products are large-volume items, we suggest you container load to save your shipping cost and make you more competitive.

Question 9

Why should we choose the Qiyao brand over the competition?

Accepted Answer

Our core competence is our ability to source quality products from top-notch factories around the world. We are very meticulous in the process of filtering out suppliers who have the ability to deliver quality products at cost effective pricing, and also most importantly we only deal with those suppliers who have utmost integrity and professionalism. With Qiyao you get better quality materials comparable to big named brands at the right price

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