EPDM seal is widely used

According, to identify quality wooden doors, the first tap, weigh approaches are generally divided into the gate of the solid filler and some solid, solid filler certain weight, the price also expensive, and some solid relatively light, the price relatively cheap. But there are some sinister business of some scraps as filler to increase the weight, so as a consumer, or to develop the habit of buying branded products. Security seals
The second way is to observe recognition "seal." "Seal" is directly related to the density of the door. Seal of "hiding" in the door pocket and door contact part, feels relatively soft. Formal enterprises will add seals, thus avoiding the seam after closing there is always a problem.
The third is the Door of the material. Reporters learned that most of the complaints were mainly about the doors Door out of the question. Essence of the problem is that the businesses will not necessarily use the same door pocket and door material, solid wood doors with solid wood Door does not mean that it will. If you do a solid wood door with MDF Door, because it does not contain wood fibers, water prone to foaming, can cause deformation of the door frame, so the best time of purchase ask whether the merchant Door and door of a material. numbered seals

Performance sponge seal

EPDM sponge seal, foam seal widely used in automotive sealing strip, rubber hose, steel doors and windows sealed, aluminum doors and windows sealed, the roof membrane and cable industry, the most widely used non-tire elastomer. truck sealManufacturer's investment in the EPDM is continuing to increase. In recent years, ethylene propylene rubber seal in the drinking water and wastewater products, engine mounts and window weatherstripping on the application of new progress. In addition, the EPDM TPV containing the market demand is relatively large.
Currently, the global demand for EPDM than 900 000 t, 2005 grew to 100 million t. Many in the industry have started to pay attention to the market is already completely saturated. Active in this field since most experts no longer regard as a special EPDM rubber, so its application areas there are many possibilities of development. In research and development applications in EPR efforts, has gradually exceeded such as polyethylene and other products. Automotive and EPDM supplier is to promote a major driving force for product improvement. More than 50% are derived from the demand for EPDM automotive industry, and mainly in the automotive sealing products. EPDM body sealing markets worldwide about 18 million t, which sealing products for the production of sponge about 35,000 ~ 40,000 t. Different with other fields in this area, on product performance, quality, stability, appearance and cost all have strict requirements.
Therefore, in order to seal in the automotive market success, EPDM supplier must ensure that their products are in many respects should be very out. security tie

Steel doors and windows have a good seal

Steel doors and windows in recent years for its good tightness and quickly occupied the market, and steel doors and windows sealed and become a national focus on the promotion of building materials, and its excellent sealing doors and windows sealed with plastic credit are inseparable, doors and windows to activity on both sides and bottom of the doors and windows must be no gaps, the only way to easy to open and close. . However, these gaps also makes noise, dust, stepped in, and impact on indoor thermal insulation, the formation energy waste, in general, the gap through the house windows and doors building a total amount of heat is usually about 12% of heat loss. Thus, a good seal on the doors and windows a great influence on the quality, the sky's the main seal sealing strip is particularly critical, its quality directly determines the merits of the quality windows and doors. tamper seals
China is now widely used seals are nitrile rubber (NBR) and polyvinyl chloride (PVC) blend made of PVC, which both ozone resistance and oil resistance of NBR and cross-linking, has good physical mechanical properties, its main source of raw material PVC-rich, low prices, it has widespread applications. By working in different ways, sealing strips can be divided into two kinds of silicified and non-silicified, GB GB12002-89 for plastic door and window seals to make a more detailed set of quality standards for referrals. Silicified seal is used over oil-treated polypropylene yarn manufactured after treated with silicone oil seal waterproof doors and windows can significantly improve performance, while aging resistance, flexibility, lodging resistance has a significant increase. In the industry standard JC/T635-1995 made it clear seal must be siliconized.
Seal root is a plastic substrate, and its aging resistance, low temperature brittleness also need the right formula and quality raw materials to ensure that, otherwise it will directly affect the seal life. If both sides of the base plate on the addition of the sealing flap side down easily, can improve the sealing performance of the sealing strip as a whole, extending its life, and in the assembly process to reduce hair seal groove and seal profiles catching phenomenon.
Structurally sealing strip can be divided into common type and intermediate sandwich type. On the basis of the latter in the former, an increase in the middle of the sealing hair a siliconized polyethylene film or a nonwoven fabric to completely hermetically sealed air flow gap between the hair, so that the sealing interlayer seal seals better than 5 times normal above. With its windows and doors made of air permeability can reach the highest national level standards. security tie
Because plastic doors and windows is the result of the overall welding, seal damaged can not be replaced, so the seal windows and doors directly affect the life of a whole life. From the above analysis, we can see both sides and there is silicified laminated seal flap sealing performance, life is much better than the low-grade sealing strip (low seal life of three to five years, high-grade seal service life 20 ~ 30 years), but its price is higher than the low-grade seals (seal low priced at 0.16 yuan / m, while the high price of 0.8 yuan seal / m). Although the seal only 2% of the cost of the entire plastic window, plastic window industry, but because of intense competition, 90% of domestic enterprises is not high quality seal, door seal material currently on the market, plasticized PVC sealing strip material share of 90%, while the industry authorities recommend using a modified high degree of polymerization of PVC and thermoplastic elastomer sealing strip market share is very low.

Silicone foam seal recipe ingredients detection

Micro-spectrum chemical formulations to provide analysis of silicone foam seal, silicone foam seal component detection, performance improvements save expenses and shorten the production development cycle, resolve product quality issues.
The main provider of silicone formulation analysis, silicone foam seal component testing, provide rubber elongation, tear strength, aging resistance, resolve sticky roller, spray frost, curing time is not ideal problem, unknown analysis, industrial diagnosis.metal cable ties
Silicone foam seal component detection process: After the separation through the evaluation sample, sample preparation, instrumental analysis, spectrum analysis, secondary verification five steps, using NMR analysis, X fluorescence spectroscopy, IR, GC-MS analysis method combined with measuring instruments, precision spectra obtained structure, to understand recipe ingredients to help you understand the product material.
Micro-Spectral Analysis Significance:
[Material Analysis]: who does not know the silicone samples, identification of the type of rubber, to provide material laboratory reports, using a short time, low cost of testing, the results quasi-
[Recipe Analysis]: detection equipment through a large sample formula that combines standard spectrum, reducing plastic formulations by industry experts, and provide raw material options
[Product Modification]: according to the supply of the sample to improve the performance, or to provide performance parameters according to design products, such as elongation, tear strength, aging resistance, etc.
[Quality Diagnosis: solve product quality problems, such as sticky roller, spray frost, curing time is not satisfactory and so on, as well as aid from the sample components to add perspective to solve the problem
Micro-spectrum chemical advantages:self-locking cable ties
A, NMR analysis, GC-MS analysis, infrared spectroscopy, GC-MS analysis, X fluorescence spectra, the instrument package;
Second, the oil sits experienced experts, formulation analysis accuracy;
Three, CMA certification, the industry's leading authority on the analysis of industry leaders
So far, nearly ten thousand micro-spectrum formula to help our clients analyze business, R & D silicone foam seal formulations.

Damping seal doors and windows

The main role of dust, insects, water, noise and sealing. Steel doors and windows on the market are generally sealing strip PVC, EPDM,barrier seals
Elastomer sealing strip (including TPV, TPE, TPR, SEBS) and other material extruded to form.
Windows seal the purposes into the glass sealing strip (strip) and two tops, glass sealing strip for glass and fan and a housing seal between the tops primarily for sealing between the frame and the fan.
Sealing strip, generally used in peaceful open hanging on the window casement windows and casement and sash windows and other windows-type seal between sash and glass; sealing tops, generally used in sliding the seal between the fan and the fan , dustproof effect.
In the steel doors and windows and aluminum doors and windows broken bridge production and installation, the sealing strip is an essential accessory.
Domestic doors and windows sealed before the classification
First, the rubber seal (also known as the modified rubber seal, PVC sealing strip).vehicle cargo seal
Second, ethylene propylene diene monomer (EPDM) seal.
Third, the elastomer sealing strip (including TPV, TPE, TPR, SEBS and other types.

Seal doors and windows Installation Precautions

Glass installation is not centered, glass sash gap with uneven rubber seal is not close to the glass and window frames, installation is not flat. Hand to knock the glass, loose sound.tamper evident tape
Reasons for this situation:
An installation of glass without the timely removal of debris inside the notch, notch the glass and misalignment.
Two glass with glass notch uneven gaps, rubber and glass tank is bad, protruding notch glass, hand seals can be easily pulled off.
3 rubber strip around the corner is not disconnected, do not inject adhesive junction.
Corrective measures are:
1 carefully before installing the glass clear notch within the debris, such as mortar, brick dust, wood, etc., should be carefully placed on the glass, ensuring that both sides of the gap is uniform, and timely than being fixed to prevent collision shift deviation notch center.
2. Rubber seal can not pull too tight, cutting length than the length of a long assembly 2O-3Omm. Should be installed mosaic in place, flat surfaces, and glass notch close contact with the glass surrounding the force evenly. Rubber strip around the corner should be beveled off and disconnect the injection of glue at the firm.
3 with fixed glass sealant caulk, you should use rubber or rubber block glass choked, leaving voids dispensing, dispensing depth should not be less than 5mm, the gel before curing, the glass should be kept free from vibration.plastic seals

How to distinguish between true and false doors and windows sealed

With a variety of petrochemical products prices continue to rise, some irresponsible manufacturers began aspects of unfair competition from the raw material (the so-called shoddy, shoddy).
Actual key is sealed windows and doors, sealing quality seal plays an important role. The seal material used market generally for modifying PVC, soft PVC in a key role in its inside adding a plasticizer which is nothing more than the quality, the relatively stable plasticizers are dioctyl phthalate butter, two small fat. But now the market price is high, some unscrupulous traders are using some other cheap stuff instead of (waste oil, oil refineries remaining foundation, etc.) to consumers is a big risk.rail car seals

Its products symptoms:

1. Permeability surface precipitation phenomena occur, those fundamental and PVC waste oil is not compatible solution, seal surface is prone to grease the surface of the profile also infected with yellow marks. Do not even have a lot of environmental volatile substances, air pollution.

2. When the so-called volatile or plasticizer exudation after the seal will lose its original softness, becomes hard, and soon aging of contraction, so that a part of the closed doors there was a great gap becomes airtight poorly (leakage, leakage of dust) in particular, steel doors and windows will soon be inside the steel liner corrosion, there are many users often find inside from the window in the rainy season layering parts out a lot of red liquid dirty, leaking windows and doors that had lined long been corrosion, doors and windows of life will be greatly reduced.ss cable ties

In the production process, the sealing strip investment accounted for a small proportion, but its role has not be ignored.