Folding screen professional detailed explanation: classification, profile mesh, structural principle, installation selection and maintenance guide

(The balcony entry folding screen window is completed as a whole, and the screen window is completely opened and closed)

Folding screens, also known as organ screens and folding invisible screens, are the mainstream screen categories that are different from reel invisible screens and diamond mesh fixed screens. Relying on the multi-fold organ folding structure, it does not need to rely on spring winding like reel screens, nor does it block the field of view like fixed diamond mesh screens and hinder the opening of inner windows. With the characteristics of left and right push-pull folding storage, small space occupation, and large holes, it is widely used in balcony sliding doors, floor-to-ceiling windows, wide-width floor-to-ceiling windows, casement windows, sun room opening fans, entry screen doors, etc.

Many owners can't tell the difference between folding screens, reel screens, and translational diamond mesh screens when purchasing screens. They simply think that they are all mosquito-proof screens. In fact, folding screens have an independent technical system in track structure, folding skeleton, mesh material, sealing method, and fitting holes. It takes into account the three major advantages of transparent field of view, large hole adaptation, and non-interference in the opening of doors and windows. It is a very important choice in the mosquito-proof solution of large and wide holes. This article explains the basic principle of folding screens, product classification, core accessory materials, performance parameters, installation process, acceptance points, fault maintenance, and purchase avoidance pits, taking into account decoration owners, door and window dealers, and installation masters

(Schematic diagram of the structural section of the folding screen organ, marked with track, folding vertical support, gauze net, windproof strip, handle)

The working principle and applicable scenarios of folding screens

The folding screen window adopts an organ-type multi-fold hinged structure, which is composed of upper and lower rails, vertical folding support skeleton, flexible gauze, handle, and side lock. When pulling the handle, the gauze mesh is folded and folded to one side in an orderly manner along with the vertical support strip. After folding, it has a storage width of only more than ten centimeters, which will not block a large area of glass. Pull the handle outward, and the gauze mesh is spread out in turn to cover the hole to achieve closure and mosquito prevention.

The difference from the core of the reel screen window: the reel screen window is stored by a spring reel, the width is generally limited, and if it is too wide, it is prone to weak rebound and screen deviation; the folding screen window does not have a spring reel structure, so it can theoretically make a very wide hole, which is the best choice for ultra-wide holes such as floor-to-ceiling windows and balcony sliding doors. Compared with the fixed diamond screen window, the folding screen window can be completely closed, and the window is not blocked when opening for ventilation and cleaning the glass, especially suitable for inner opening and inner opening. There will be no problem of screen window and handle fighting.

Mainstream application scenarios: residential balcony sliding doors, large floor-to-ceiling windows, wide casement windows, sun room openings, villa entry folding screen doors, shop and store vents.

Limitations should also be objectively understood: the folding screen is made of flexible material, and the anti-impact and anti-child collision protection ability is weaker than that of the diamond net, so the main anti-mosquito ventilation is not suitable for use as a protective screen; in environments with particularly large wind and sand and a lot of outdoor debris, the gap of the screen is easy to accumulate dust, and the cleaning frequency is higher.

(Comparison of the folded state and the unfolded state of the folding screen window with the real picture)

Mainstream classification of folding screens, structural differences between different versions

There are many versions of folding screens on the market, and many merchants refer to them as folding screens, but the internal structure gap is very large, which is also the root cause of the price gap.

Trackless folding screen window (hanging rail/upper rail folding screen window)

There is only one load-bearing track above, no track at the bottom, no grooves on the ground, no stumbling. The passage of cleaning and sweeping robots is not affected. It is a popular model for home improvement at the moment. Relying on the upper rail pulley to carry the full weight requires high load-bearing requirements for track profiles and pulleys. Disadvantages: When the oversized hole and the gauze net have a large self-weight, the bottom gauze is prone to sag after long-term use and needs to be adjusted regularly. Suitable for balcony doors and entry screen doors that move around frequently.

Upper and lower double track folding screen window

The top and bottom are equipped with aluminum alloy tracks, with upper and lower limits, the structural stability is the best, the gauze is not easy to deviate and sag, the sealing effect is better, the wind resistance is stronger, and the gauze is not easy to bulge in a strong wind environment. The disadvantage is that there are lower rail grooves on the ground, which are easy to accumulate dust, easy to trip the elderly and children, and the passage of sweeping robots is blocked. It is mostly used for window positions and holes that are not often stepped on.

Side pull folding screen window (single open folding screen window)

It is the most common style to fold to one side and reserve storage space on the side of the hole. Most windows and balcony doors use this style.

Folio folding screen window (two-way folding screen window)

The middle handle, the gauze mesh is closed to the left and right sides at the same time, suitable for ultra-wide balcony doors. After closing, half of each side is closed, and the unilateral storage width is smaller and the vision is more beautiful.

Thickened windproof folding screen window

Add built-in windproof inserts and side windproof tops, reduce the outer bulging of the gauze and derailment in windy weather, and give priority to this style for high-rise residents.

(Comparison of samples of trackless folding screen window, double-track folding screen window, and folio folding screen window)

Third, the analysis of the core material of the folding screen window, the material determines the service life

3.1 Aluminum alloy track profile

The track is the load-bearing core of the folding screen window, and the mainstream profile is 6063 aluminum alloy. The wall thickness of the home improvement is 1.0mm-1.4mm; the thin material is 0.6-0.8mm low-cost track, and the track is deformed and the pulley is stuck after the wide screen window is used for a period of time.

Surface treatment is divided into: powder spraying, anodizing, wood grain transfer. Powder spraying is rich in color, good weather resistance, not easy to fade; wood grain transfer is suitable for broken bridge wood grain doors and windows, high degree of home decoration; anodizing is cost-effective, the appearance is metal primary color, outdoor exposure for a long time is easy to black.

The internal structure of the track is divided into ordinary simple grooves and widened pulley grooves. The widened grooves are suitable for large-size pulleys, which slide more smoothly and are not easy to derail.

3.2 Folding vertical support (folding strip)

The vertical support skeleton is the key to maintaining the folded shape of the screen mesh. It is divided into PVC plastic folding strips and aluminum alloy fine folding strips. PVC folding strips are light, quiet, and cheap, but they are easy to age and become brittle in long-term sun exposure, and are easy to break in 2-3 years; aluminum alloy folding strips have high strength, aging resistance, and longer service life. They are standard for mid-to-high-end folding screens. The folding strips are hinged structures, and the rivets at the hinged points are vulnerable parts. Inferior rivets are easy to rust and loosen.

3.3 Folding gauze (core consumables)

Flexible gauze for folding screens is not the same material as diamond mesh and ordinary reel gauze. There are three common types:

Polyester fiber invisible high-transparency gauze mesh: mainstream on the market, fine mesh, transparent, soft feel, folding repeated bending is not easy to crack, excellent light transmission and ventilation effect, color is mostly gray, black, visual transparency, suitable for families pursuing vision. Disadvantages: Sharp objects are easy to scratch.

Polyester thickened windproof gauze: higher density, greater gram weight, strong wind resistance, high-rise, trend location selection, ventilation slightly weaker than high transparency.

PVC coated gauze mesh: the lowest price, good stiffness, but poor flexibility, prone to creases and cracks after repeated folding, outdoor sun exposure aging speed, is a low-end product.

Key points for purchase: high-quality gauze is UV-resistant and anti-UV additives are added; inferior gauze is not UV-resistant, and it will become brittle and pulverized after half a year in the sun.

3.4 Hardware accessories: pulley, handle, lock, windproof top

Pulley: nylon silent pulley + stainless steel bearing is standard, silent and smooth; plastic bearingless pulley, serious wear and tear after a period of use, push-pull card, abnormal sound. The upper pulley of the trackless screen window is the top priority, and the load-bearing is all concentrated here.

Handle: aluminum alloy embedded handle, plastic handle, embedded type is not prominent, not easy to bump.

Sealing accessories: EPDM EPDM windproof top, side magnetic suction strip. After the magnetic suction model is closed, the side is adsorbed and attached, and mosquitoes are not easy to drill into from the side gap; the seal of ordinary wool is slightly weaker, and the gap becomes larger after the top is aged. PVC tops are easy to harden at low prices, EPDM tops are resistant to aging and have a longer service life.

(Close-up of track profiles, folding folds, bearing pulleys, folding gauze fabrics)

Fourth, the key performance indicators of folding screens, the purchase can not only look at the appearance

First, wind resistance: double-track model > trackless model with windproof insert > ordinary trackless model. High-rise, windward balcony, preferred style with windproof structure, when the wind is strong, the gauze bulges outward, which will cause the gauze to fall off the groove and tear the hinge position.

Second, the light transmission and ventilation performance: high-transparency polyester mesh has the best light transmission, and the indoor lighting is almost unaffected. It is suitable for low-floor, general lighting apartment types; thickened windproof mesh ventilation decreases.

Third, the durability of repeated folding: qualified products are repeatedly folded tens of thousands of times without gauze cracking or hinge fracture; low-end PVC folding clauses are damaged after being folded thousands of times.

Fourth, sealing performance: side magnetic attraction + upper and lower track top double sealing is the best, reducing mosquitoes from drilling into the room through the gap.

Fifth, suitable temperature and weather resistance: high-quality complete sets of accessories are environmentally stable at -20 ° C to 60 ° C, do not deform in summer exposure to the sun, and do not harden at low temperatures in winter.

Many owners step on the pit: only to see that the gauze is transparent, ignoring the windproof structure. After the high-rise is installed, the windy gauze bulges up, and mosquitoes enter the gap. Later transformation is very troublesome.

(Schematic diagram of windproof structure node of folding screen window on high-rise balcony)

5. Standardized installation process for folding screens, installation directly determines whether it is good or not

Folding screen windows have high requirements for hole measurement and leveling. Many screen window products have no problem with quality, and the installation is not standardized, resulting in cards, sagging, and leaking mosquitoes.

Step 1: Accurate measurement of the hole. Differentiate between interior, exterior and middle decoration, measure the net width and height of the hole, check the door and window handles, and open the interference. Key tests for inner opening windows: When the screen window is closed and unfolded, will the inner opening and inner inverted hit the screen window handle and folding strip. Trackless styles should confirm whether the top wall is solid. Gypsum ceilings and hollow ceilings cannot be directly load-bearing, and reinforced linings need to be installed in advance.

Step 2: Profile cutting and pre-assembly. According to the size of the cutting track, assemble pulleys, folding strips, gauze nets, factory pre-assembled finished products, reduce the difficulty of debugging on site; simple models for on-site cutting and assembly have poor accuracy and high failure rate.

Step 3: Fix the track. The double-track model first fixes the upper rail, adjusts the level, and then fixes the lower rail; the trackless model only fixes the upper load-bearing track, and the level is the core. The inclination of the track will cause the handle to automatically slide and the screen net to sag unilaterally. The fixing screws are hidden, taking into account the appearance, the screw points are uniform, and the wide screen window encrypts the fixing points.

Step 4: Debug the pulley, hinge and seal. After installing, push and pull repeatedly to unfold and close, check whether it is stuck, adjust the tightness of the pulley, and adjust the magnetic attraction position on the side to ensure that the magnetic attraction is tight and there is no gap after closing.

Step 5: Clean up the track debris, tear off the protective film, and demonstrate the use method.

Important reminder: Trackless folding screens are prohibited from being installed on loose ceilings and gypsum boards, and there are potential safety hazards when they fall off under load.

(Master's on-site level calibration track, debugging folding screen sliding and pulling real shot)

6. Key points of acceptance inspection, check one by one before delivery

Push-pull test: The whole process of unfolding and closing is smooth, there is no card, abnormal sound, or card lag, and it will not slide by itself after letting go;

Closed seal: After complete closure, the side magnetic attraction is tightly bonded, the light transmission gap is uniform, and there is no obvious large gap;

Appearance inspection: track without distortion scratches, gauze without stringing, holes, uneven folds;

Interference test: all open modes of doors and windows are tested, and the window opening and inversion will not hit the screen window;

Stability test: trackless shaking handle, no loose track, no obvious sagging at the bottom of the gauze;

Accessories inspection: the top and magnetic attraction are complete, the rivets are not loose, and the handle is firm.

Acceptance is the easiest to ignore: it seems to be able to pull, but the track is slightly inclined, which is no problem in the short term. After half a year, the gauze becomes more and more hanging, and the push and pull become heavier and heavier.

(Acceptance personnel test the push-pull of the folding screen window and check the real shot of the side seal)

Seven, folding screen daily maintenance, common fault repair plan

Folding screen window is a flexible structure screen window, which is properly maintained and can be used normally for 5-8 years; if it is not maintained, it will fail frequently in 2-3 years.

Daily maintenance: The interior of the track is prone to dust and hair accumulation. Use a brush to clean the track dust every 1-2 months. Dust getting stuck in the bearing is the main reason for abnormal noise; do not add oil to the pulley track, the oil will stick to ash, and sludge will soon form. The more you use the card, the more serious the card, you can use a small amount of silicon-based dry lubricant.

Gauze cleaning: gently wipe with a wet and soft rag and sponge, do not brush hard or rub vigorously, the polyester gauze is easy to hook silk when scrubbed vigorously; wipe with a neutral detergent with stubborn stains, and prohibit strong acid and alkali.

Top magnetic suction maintenance: Wipe the surface of the magnetic strip clean to avoid sediment adhesion affecting the adsorption and sealing; replace the top directly if it becomes hard and sheds hair.

High frequency fault handling:

Push-pull card: track dust accumulation, pulley wear, track deformation; dust cleaning, wear pulley direct replacement;

The bottom of the gauze sagging: the trackless style pulley is loose and the track is not horizontal, re-level the track and adjust the pulley;

Side leaking mosquitoes: magnetic attraction displacement, top aging, readjust magnetic attraction or replace top;

The hinge position of the folding strip is broken: the PVC folding strip is aging, and the folding strip assembly is replaced;

The gauze mesh hooks the small hole: the small hole can be repaired with special gauze mesh repair stickers. It is recommended to replace the whole mesh for large-scale damage.

Note: gauze is a consumable part, not within the scope of long-term quality assurance, hardware track skeleton generally longer quality assurance, confirm the merchant's quality assurance range before placing an order.

(Clean up the dust on the track of the folding screen window, replace the windproof top, and maintain the real shot)

Eight, folding screen window purchase pit avoidance guide

Confuse the advantages and disadvantages of trackless and double-track: merchants blindly recommend trackless, do not inform the risk of sagging, and blindly choose trackless at the windward entrance of high-rise buildings;

Profile Thin: Standard 1.2mm track, actual 0.7-0.8mm, wide use deformation;

Gauze mesh cutting corners: no anti-UV ordinary polyester mesh posing as high-permeability anti-UV mesh, short-term brittle powder;

Folding strip material concealment: plastic PVC folding strip posing as aluminum alloy folding strip;

Ignore the interference of the hole: do not try to install the inner window in advance, and open the window and bump the screen window after installation;

The low-priced package does not include accessories: the quotation only counts as gauze, and the windproof strips, magnetic suction and reinforcement parts are increased separately;

Wrong use: If you have children at home and want protection, you can only buy folding screens without diamond mesh protection, which cannot prevent falling protection.

Selection summary: often passing people, balcony doors, do not want grooves on the ground, choose trackless folding screens with windproof structures; window positions, high-level winds, the pursuit of stability and no leakage of mosquitoes give priority to upper and lower double-track folding screens; poor lighting, want a transparent field of view Choose black high-transparency polyester mesh.

(Folding screen window finished packaging, on-site sample display)

Summary

The folding screen window is a mosquito-proof screen window product tailor-made for large and wide openings, which complements the reel screen window and fixed diamond mesh screen window. It has no spring reel, breaks through the width limit, and can be folded and stored in an organ style. The biggest advantage is that it does not occupy the window space, and is suitable for large openings such as floor-to-ceiling windows and balcony sliding doors. A set of durable folding screen windows depends on the thickness of the aluminum alloy track wall, bearing pulleys, UV-resistant polyester screen, folding strip material, windproof sealing structure, and precise installation and leveling.

Many owners think that screen windows are small products, just choose one at random. In fact, inferior folding screens are frequently stuck, sagging, leaking mosquitoes, and the screen screen is rapidly aging, and the cost of later maintenance and replacement is very high. When purchasing, you can't just compare the price, choose the style based on the floor wind direction, hole position, and door and window opening form. Pay attention to the configuration of tracks, pulleys, screens, and windproof accessories, and do regular cleaning and maintenance, so as to achieve the effect of transparent ventilation and efficient mosquito prevention for a long time. In the category of home decoration screens, folding screens have always been a popular choice in floor-to-ceiling windows and balcony door screens with their advantages of beauty, convenient storage, and wide holes.