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The rubber sealing strip
       • Large rubber bumper
       • EPDM rubber seal
       • EPDM foam seal
       • EPDM composite seal
       • Dense silicone seal
       • Silicone foam seal
       • PVC rubber seal
       • PVC composite steel trim
       • TPE elastomer seal
       • Fire retardant seals
       • Fire expansion seal
       • Nitrile rubber sealing strip
       • Chloroprene rubber seal
Doors and Windows sealed
       • Aluminum doors and windows sealed
       • Building curtain wall sealing strip
       • Wooden door seal slot
       • Doors of self-adhesive sealed
       • Automatic revolving door seal
       • Frameless glass door seal
       • Cold storage warehouse door seal
       • Fire doors and windows seal
       • Pu foam-coated sealing strip
Series of car seal
       • U-car trim
       • Door three composite seal
       • Container Seal
       • Windshield Seal
       • Sponge soundproof seal
       • Retaining the door seal
       • Glass flocking seal
       • Molded seals
       • Bus seal
       • Electric car seal
       • High Speed Rail train sealing strip
       • Wiper seal
Bin cover seal
       • Cabinet seal
       • Cabinet waterproof seal
       • Door seals
       • Oven seal
       • Steam cabinet seal
       • Electric Seal
       • Refrigerator seal
       • Lip seal
Composite seal
       • Hard and soft compound rubber seal
       • Three composite rubber sealing strip
       • Silica composite seal
       • PVC composite trim strip
       • TPE + PP soft and hard composite seal
       • PVC color composite seal
       • PVC light word sidebar
       • U-edging seal
Insulation sealing
       • Retardant sealing strip
       • Insulation Seal
       • Conductive sealing strip
Hard and soft composite seal
       • EPDM rubber tube
       • Silicone tube
       • Rubber Seals
       • Highways, bridges the gap seal
       • Building deformation joint sealing strip
       • Rubber conveyor belt
       • Rubber, EVA, PE foam board
 

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Sealing strip doors and windows with the choice of building

Installation, sealing strip doors and windows are required to achieve closure seal between profiles and glass, between the fan and the frame. Sealing tape plays in the use of fixed glass windows, cushion vibrations and blocking water, air circulation effect. Insulation performance and air tightness of windows and doors have a significant impact on the energy consumption of buildings, poor sealing doors and windows missing wall heat loss is the loss of heat loss 5-6 times. Energy-efficient windows, doors and curtain wall building energy accounted for about 37-40%. So tape is a kind of standard energy-saving windows and doors can not be ignored functional accessories, performance and service life should cause us concern.

Currently, due to various reasons, the tape market mixed. There are a lot of developers and corporate doors, for the reason for the use of low-cost does not meet the "doors and windows sealed plastic strips" standard seal. In addition to this problem tape manufacturers must further improve the emphasis on energy-saving windows and doors industry, should also improve the seal of recognition skills in all aspects of the development, supervision and doors and windows, etc., pay attention to the following aspects in the selection of sealing tape when discrimination, in order to promote the general improvement in the quality of doors and windows sealed.

A material selection: product performance and seal life, first of all depends on the choice of materials. From the classification of chemical building materials, the main material used for doors and windows sealed into thermoplastic elastomer sealing strip and vulcanized rubber sealing strip into two categories.

A thermoplastic elastomer sealing strip (SJT)

PVC resin blends single-cylinder modified material. PVC resin polymer modifiers (typically using crosslinked nitrile rubber or rubber-based chlorinated polyethylene) strips produced by modifying the general category called blended or PVC elastomer seal, said modified poly vinyl seal. This material is due to the addition of polymer modifiers, so resilient sealing strip, high temperature tolerance are improved, and the high strength and good resistance to aging, the basic physical properties can be achieved GB / T12002 or JG / T187 standards, affordable, currently used to manufacture building doors and windows sealed using more common.

Some companies use the quality varies, complex composition of waste production seal, but in the blend while at the same time without the modifier added in excess filler, that is a highly filled PVC sealing strip, this strip intensity difference, elasticity is low, easy to break. Some manufacturers also joined the alternative plasticizer aromatic oil or heavy oil refinery slag, the sealing strip products not only pungent odor, but in the short term deformation of contraction, or even fall off, so that the loss of seal windows and doors, it must prohibit the use of such strips .

      EPDM / polypropylene crosslinked dynamically vulcanized thermoplastic elastomer material (TPV). This is a standard has been developed abroad, the country will also have a new industry standard materials, doors and windows at home and abroad are used. This TPV material properties and vulcanized EPDM quite, because of its technology is good, a small proportion of the high windows, free of heavy metals and halogens, is a high practical value of energy saving and new materials. 4000 yuan / M2 began to use more high-quality real estate.

     high degree of polymerization of the resin blend modified crosslinked elastomeric material (TPE). Biggest feature is without curing process, and the use of thermoplastic molding processing methods can greatly shorten the molding cycle, but the waste can be recycled and used again, in favor of joint resources and energy, is a promising material, can be used as a substitute for vulcanized rubber. Modified PVC seal with good resistance to compression set, by the National  Building Society considered as a substitute for EPDM seal doors and windows and weather stripping. TPV its performance and the same, but the materials used in different recipes. Slightly below the current sales price TPV, for the customers, are affordable products, without increasing the cost of upgrading the premise grade windows. With a high marketing value, has become the material of choice for high-grade windows and doors manufacturing enterprises and export products.

 

2. The vulcanized rubber-like seal mainly EPDM (EPDM):

     This material produced excellent seal aging resistance, suitable for sealing windows and doors use, once at home and abroad to become the preferred sealing material. But its vulcanization vulcanization production line stereotypes need to be completed, high production costs, higher raw EPDM rubber prices, so high-grade EPDM sealing strip prices. Lower-priced products on the market, a lot of filling calcium, and other waste materials, and poor quality.

EPDM product than the major, the window is low, contain heavy metals, including nitrosamines (carcinogens), many countries banned the use indoors. And the product can not be reused, is not conducive to environmental protection, for the international promotion of the concept of green, the market will be phased out.

 

II. View test report:

     Regardless of what material seal, must have sufficient tensile strength, good elasticity and hardness, its physical properties are to meet the targets GB12002-89 standard or JG / T187-2006 standards. At the time of purchase to see the manufacturer of the test reports, product certification, quality assurance and signed an agreement with the manufacturer. PVC modified compliant seal life of up to 15-20 years, thermoplastic EPDM (TPV) seal life of up to 30 years.

Three practical performance tests:

     1. The concept of check strip surface is smooth, no impurities, no bubbles, no indentations, feel should be delicate and soft. High filled soft PVC or EPDM seals, poor flexibility, rough surface, large deformation.

     2. Hand moderate stretch without breaking, can recover quickly after bending release. Highly filled soft PVC seal intensity difference, a discount on the crack, said something on the break.

     3. The presence of nasal olfactory sensory aromatic odor. Some PVC seal only use quality mixed waste, also added in excess filler formulation and low molecular weight components aralkenyl oil or diesel heavy oil refining complex as plasticizers substitutes. When this product is just the factory smell larger as time goes on the more volatile components, seals quickly stiff brittle, so strip contraction, loose, fall off, easy to crack aging, loss of seal. Since migration arylalkenyl oil or heavy oil can also lead to yellowing profiles.

     4. Practical examination: The strip is embedded between profiles and glass, to check the reasonableness of the strip cross-sectional shape and size of suitability. Little effort to push the strip, but the bigger the better efforts to pull the glass. If the conditions can also find a professional third-party testing organization watertight and leak test.

In summary, from several aspects seal appearance, strength, odor, burning and other visual identification of the quality of the merits of the strip:

Low-grade polyvinyl chloride (PVC) seal surface roughness variations large intensity difference, said something on the break. There assassination nose sniffing aralkenyl flavor. After burning self-extinguishing, since it is drawing less filler and more resin is very short.

High quality modified PVC (PVC) seal surface delicate brightness, high strength, good elasticity, no smell. Flame burning yellow, green roots with chlorine taste, self-extinguishing Houla Si burn longer.

Vulcanized EPDM (EPDM) seal strength, flexibility, small deformation, surface brightness, heavy (about 1.5), when the roots were burning blue flame, smoke, no sticky residue, not drawing after combustion.

Thermoplastic elastomers TPV / TPE seal EPDM seal performance is better than cure, can float on the water (specific gravity 0.90-0.95), excellent elasticity and tensile properties, various colors.

Four. Raise awareness of the quality of the sealing strip

     From the mid-range market analysis windows, sealing strip doors and windows cost only 0.1-0.5%, for the entire construction project, the cost is minimal, but the seal was not inconsiderable role. We have encountered a business matching doors for luxury villas serious quality problems, the owners have not yet found the doors and windows that stay in through the rain, the survey found the sealed contraction caused by the results of all rework replacement products Kamo. The companies save a little money has caused huge economic losses and loss of reputation.

Therefore, we should develop all aspects of business, supervision units, doors and windows, seal manufacturers in a bid to improve the function of the doors and windows and related seals understanding correctly handle the relationship between price and quality for the production and use of standards-compliant sealing strip leaving space for a reasonable price.

Secondly, concerning the supervision and doors enterprises to cope with the procurement, use the seal to adhere to the standard audit, any substandard cheap inferior seal shall not use, regulate the construction accessories market. Related standards such as "plastic doors and windows sealed plastic strips" (GB / T12002-1989), "building doors and windows sealed plastic strips" (JG / T187-2006).

Third, seal manufacturers should continue to improve social responsibility, eliminating the inferior seal, and actively promote technology innovation to build their own brand, do not participate in price competition, to promote the industry increasing levels

At present, the domestic production of doors and windows sealing strip manufacturers a lot, and really reach a certain size, but one of the few professional manufacturers, door and window sealing strip market has been dominated by the majority of artisanal producers, the low degree of automation, and these manufacturers are not fundamentally the sealing strip as their mainstay products to look at, brand awareness is weak. WithChina's accession to WTO, foreign brand products influx home, once occupied the domestic market made the majority, then we think it would be difficult occupation. Thus, the domestic need a group set sealing strip material research development, cross-section design, mold development, degree of automation is higher than one of the professional manufacturers meet the challenges ahead.