Small knowledge of plastic doors and windows

The Chinese name plastic steel profile is actually used to make PVC profiles for doors and windows. It appeared in the late 1950s in Germany. It has been introduced in China. It has only been introduced since 1983.

First look at the packaging of the profile (that is, the protective film attached to the profile is also a trademark) whether it is flat and smooth, with or without bubbles, and whether it is in a straight line from one end to the other. The trademarks of counterfeit profiles are pasted by hand, there will be a lot of bubbles, and they are crooked, and the quality of the trademark is also very poor. You can see it by careful observation. Remove the protective film and look at the surface of the profile. The surface of a good profile is very smooth and smooth, without small spots of unevenness, with brightness, and the color is really very white (like milk). Looking at the wall thickness of the profile, the main wall thickness of a good profile can be At least two millimeters, there is the toughness of the profile, you can use the vise to clamp the profile wall, and break back and forth, the good profile will not fall off easily (not applicable in winter, because the temperature is relatively low in winter, the plastic will become very brittle) strict In terms of national industry regulations, processing below 10 degrees Celsius is not allowed. Another thing is to look at anti-counterfeit code printing, there will be anti-counterfeit code printing on the real profile, in general, you can tell the true and false without calling the inquiry, a 6 meters long profile will have 4 to 6 code groups first See if the handwriting of the coding group is clear and complete, (fake profiles are manually brushed by a very simple transfer machine after leaving the factory, and they will be blurred). The coding groups of real profiles are only, while fake profiles The same (through a batch of) coding groups are the same (subject to the cost of equipment), call the inquiry phone to check the coding.

From white to color: The color profile changes the monotonous white color of the plastic steel doors and windows, which can be matched with the overall color of the building. The market share of color profiles is rising rapidly, especially in some high-end residential areas. 

Three categories
1. According to the opening method, it can be divided into: fixed window, upper suspension window, middle suspension window, lower suspension window, vertical turn window, swing door and window, pulley swing window, pulley window, swing lower swing door, sliding door and window, sliding window Open windows, folding doors, floor spring doors, lifting sliding doors, sliding pull folding doors, sliding doors inside and down.
2. Divided according to performance: ordinary doors and windows, sound insulation doors and windows, heat insulation doors and windows.
3. Divided into different parts by application: inner doors and windows, outer doors and windows.
Casement window
The advantages are large opening area, good ventilation, good sealing, excellent sound insulation, heat preservation and impermeability. It is convenient to clean the window when it is inside; it does not take up space when it is opened outside. The disadvantage is that the window is small and the view is not wide. The opening of the outer window takes up a space outside the wall, which is easy to be damaged when the wind blows; and the inner window needs to occupy part of the indoor space. The use of screens is inconvenient, and the use of screens, curtains, etc. is not convenient. If the quality is not enough, it may seep rain.
Sliding window
The sliding window has the advantages of simplicity, beautiful appearance, large window width, large glass block, wide field of view, high lighting rate, convenient glass cleaning, flexible use, safe and reliable, long service life, opening in a plane, less space occupation, and easy installation of screens Wait. The most used is the sliding window. The disadvantage is that the two windows cannot be opened at the same time, and at most only half of them can be opened. The ventilation is relatively poor; sometimes the sealing is also slightly poor.
Sliding window: There are two types: left and right, up and down. Sliding windows have the advantage of not occupying indoor space, beautiful appearance, economical price, and good sealing. Adopt high-grade slide rail, gently push to open flexibly. Coupled with large pieces of glass, it not only increases the lighting in the room, but also improves the overall shape of the building. The sash is in a good state of stress and is not easily damaged, but the ventilation area is limited.
Underhang
This is a kind of aluminum alloy and plastic steel window that appeared later. It is a new form developed on the basis of casement windows. It has two opening methods, which can be opened flat or pushed from the top. When the casement window is closed, the upper part of the window can be pulled inwards to open a gap of about ten centimeters, that is to say, the window can be opened a little from above, the opened part is suspended in the air, and fixed with the window frame by a hinge or the like , So called under-hanging. Its advantages are: it can not only ventilate, but also ensure safety, because of the hinge, the window can only open a ten centimeter gap, can not reach out from the outside, especially suitable for use when no one is at home. The sliding window can also be opened under the suspension.
Swing door
There are single-open swing doors and double-open swing doors: single-open doors only have one door panel, while double-open doors have two door panels. The swing door is divided into one-way opening and two-way opening. One-way opening can only be opened in one direction (only push in or pull out). Two-way opening is that the door leaf can be opened in two directions (such as a spring door). Swing doors are divided relative to other opening methods, because the doors also have mobile opening, upturning, roller shutter lifting, vertical lifting, rotating and so on.
Sliding doors
The sliding door originated in China and spread to North Korea and Japan through Chinese culture. Literally: push the door; from the material: there are wood, metal, organic, inorganic materials; from the use: for bookcases, wall cabinets, bedrooms, living rooms, showroom doors . The sliding door originated in China and spread to North Korea and Japan through Chinese culture. It is impossible to verify the specific time, but you can see scattered sliding doors in some ancient paintings in China. For example, landscape paintings in the Song Dynasty have sliding doors. The original sliding door was only used for the sliding door of the bedroom or locker room, but with the development of technology and the diversification of decoration methods, from the traditional plate surface to glass, cloth, rattan, aluminum alloy profiles, from sliding door, From the folding door to the partition door, the function and use range of the sliding door are constantly expanding. In this case, the use of sliding doors began to become diverse and rich. In addition to the most common partition doors, sliding doors are widely used in bookcases, wall cabinets, living rooms, exhibition halls, sliding doors, etc. [2] 
Production method edit
Store
During the transportation process, the profile should avoid contact with and rub against hard, rough and sharp objects. During storage, avoid high temperature, sun, rain, oil, corrosive chemicals, dust and other damage. When the profiles are stored outdoors, they must be covered and protected. Non-white profiles should be stored away from light.
Cut
Cutting speed 60-70m // sec;
Ensure proper feed rate; blunt sawtooth or too fast feed rate will cause the cut defect;
Precisely adjust the angle of the saw blade to 45 degrees, the maximum angle error is 0.5 degrees;
The limit is strictly in accordance with the given length, and the length error does not exceed 0.5mm;
The cut profile should be placed with the incision face down and welded within 48 hours. In order to avoid excessive storage, the surface of the cut will be contaminated and the welding quality will be affected.
Drilling and milling
The feed rate and cutting speed of drilling holes decrease with the increase of drilling depth;
Double-drill bits should be used to drill holes with a diameter greater than 20mm, and progressively lighter bits should be used to drill holes with a diameter greater than 40mm.
welding
The welding parameters meet the following requirements:
Welding plate temperature: 245-250 degrees
Warm-up time:> 30s
Pressing time:> 30s
Welding pressure: 0.2-0.3MP
The welds must not be yellowed.
Welding corners should avoid sharp cooling and violent impact after the welding is completed. Clearing the corners or drilling, milling and cutting around the weld should be performed at least 1 minute after welding is completed.

Welding and cooling cannot be added in any way.
Corner cleaning is best done after welding: between 1 minute and 30 minutes to ensure the welding strength and obtain high-quality corner seam cleaning effect.
The width of the decorative groove cut out from the plane on both sides of the welding corner is 3mm, and the concentration is not more than 0.3mm.
If the cutting depth is too large or the tool is too blunt, the intensification of knocking when cleaning the inner corner will lead to a decrease in the strength of the welded corner.
If the inner corner (especially the sealing tape installation groove) is drilled too deep or too large, it will lead to a decrease in the welding angle and affect the water tightness.
Embedded
Do not over-stretch any glue strips, and ensure that the glue length is about 2% longer than the installation groove. The sealing strips between the sashes of side-hung windows are a strip of rubber around the circumference. The joints should be in the middle of the upper horizontal edges, not at the corners, or divided into several sections. Rubber strip