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PVC profiles and windows' important questions

Time : 2021-10-11 Hits : 3

What system depth of frame and sash window profiles are appropriate?

The current JG/T 140-2005 and JG/T 180-2005 standards for doors and windows specify:

1.The calculated value of the minimum destructive force of the welding angle of the casement window frame shall not be less than 2000N;

The calculated value of the minimum destructive force of the welding angle of the window sash shall not be less than 2500N.

The calculated value of the minimum destructive force of the welding angle of the sliding window frame shall not be less than 2500N;

The calculated value of the minimum destructive force of the welding angle of the window sash shall not be less than 1400N, and the measured calculated value shall be greater than the calculated value.

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2.The calculated value of the minimum destructive force of the welding angle of the casement door frame shall not be less than 3000N;

The calculated value of the minimum destructive force of the welding angle of the door leaf shall not be less than 6000N;

The calculated value of the minimum destructive force of the welding angle of the sliding door frame shall not be less than 3000N;

The calculated value of minimum destructive force of the welding angle of the door leaf shall not be less than 4000N,and the measured value shall be greater than the calculated value.

This requires that the system depth of the profile shall not be too small,and the calculated value of the minimum destructive force of the welding angle must meet the standard requirements.In addition,the installation size of the hardware must be considered,and the installation space must be reserved for the hardware.Under the conditions of meeting these design elements and strength,the profile size shall be as small as possible,so as to maximize the cost performance.Therefore,there is no specific quantitative data for the size of the large and small surfaces.

How is the fillet weld strength of the full base color window door profiles?

The fillet weld strength of the full base color profile of our company is greater than that of the standard white and the co-extruded color profiles.This is because the proportion of inorganic calcium carbonate in the formula of the full base color profiles is relatively small.Therefore, its measured value of the fillet weld strength is greater than that of other profiles.

How is the weather resistance of color co-extruded and laminated profiles?

Our color co-extruded and laminated profiles (Germany Renault Litt, Hongshuhe high weather-resistant lamination).The weather-resistant performance is excellent, for it has passed the National Polymer Materials and Products Quality Supervision and Inspection Center 6000 hours of artificial accelerated aging test,equivalent to 30 years in the natural environment without color change.

What is the best air layer thickness of hollow glass to save energy?

There are three forms of heat transfer: radiation, convection, and conduction. High-temperature objects transfer heat mainly through radiation of visible light and infrared rays. For example,we feel heat transferred through radiation when facing the fire under the sunlight.Convection is a way of transferring heat through the flow of gas and liquid.Conduction refers to the transfer of heat from one part of the object to another. Air is a poor conductor of heat, and its thermal conductivity is only 3% of that of glass. When the thickness of air layer is about 12mm, it is most favorable for thermal insulation. Decrease the thickness of the air layer and increase the heat loss through air conduction; increase the thickness of the air layer.

When the indoor and outdoor temperature difference reaches a certain value, one side of the air layer will be heated slightly and the other side will be cooled heavily, which is easy to form convection. Therefore, there is no scientific basis to increase the insulating performance of hollow glass by increasing the glass spacing, which can not improve the insulating performance of hollow glass,but can reduce the insulating performance of hollow glass.In order to improve the insulating performance of insulating glass, the insulating glass with two cavities and three layers of glass can be selected.

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CONTACT:Alex Lee