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Basic knowledge of plastic, plastic windows and doors products introduced the basic knowledge
Plastic doors and Windows is polyvinyl chloride (PVC) resin as the main raw material, plus a proportion of the stabilizer and colorant, filler, ultraviolet ray absorber, etc.
At present, the market, many different kinds of plastic doors and Windows, according to open a way classification:
(l) plastic doors and Windows improper selection, wall thickness, or not according to stipulations set enhance steel.
(2) with the method of connecting the wall undeserved, box body missing around embedded soft materials, and formed a "expansion joint".
(3) spell door or window frame materials with wall body not reliable connection fixed.
(4) installed connection screw have tightness.
(5) box weeks embedded material fill gaps too tight.
Plastic doors and Windows of the deformation of the prevention and control measures are:
(1) doors and Windows should choose much housing type, wall thickness not less than 2.2 mm. Lining the thickness of the steel plate handled not less than 1.2 mm.
(2) the window of the section: used for multistory buildings flat to open the window is not less than 50; High-rise flat open the window is not less than 60; Push-pull window not less than 80; Seal of the balcony plastic window not less than 85.
(3) the door window frame with wall body connection should use fixed piece join, fixed with 1.5 mm of cold rolling steel plate making, width is equal to or greater than 15 mm. Installation position should be apart from the window frame, the Angle, in 150-200 mm mullion, span 600 mm. Fixed piece may not installed in the box, mullion coupling, lest frame deformation by inflation.
(4) the aluminum sliding door with wall body between should stay 15-20 mm aperture, in order to ensure that after door window is installed free bilge shrink, window and wall body inner cavity fill the gap should be elastic material.
(5) fill soft materials, should not be filling the close too loose, lest door window frame is extruded deformation.
(6) plastic material should be according to the inner cavity design codes add enhance steel, design without regulation, when the casing outside the material more than 1500 mm long, shall be established to enhance steel; A beam of more than 700 mm and when set to increase steel; Level of push-pull window, bedroom door all should set enhance steel. Enhance steel screws with profiles application connection tighten, to increase stiffness, prevent deformation.
(7) spell door or window frame materials must set enhance steel, steel door or window frame materials should be lined with lists 10-15 mm long, with wall up and down for reliable fixed. Window frame with spell pattern material should pick up card, use screws two-way tighten, span not less than 600 mm.
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