Seal used to keep the body door , windows and other moving parts , and front and rear window , triangular windows , which are not part of the dynamic seal , seal shape and cross-section should be used to meet the requirements of different parts and different functions .
The purpose of the sealing strip :
1 , keep the car clean, weatherproof , dustproof , heat insulation, sound insulation ;
2, when the body is subjected to vibration and distortion ,colored cable ties the seal also cushion , shock absorption , keeping the role of glass ;
3 , on the edge of the transfer windows for decoration ;
Sealing strip material, natural rubber is often used to get up early , and later developed into ethylene, propylene rubber, nitrile rubber, synthetic rubber for the mainstream , but also the use of polyvinyl chloride resin. For fixed window edge portion of the front , rear , triangular windows, etc. , there is also a variety of paste forms ( such as direct bonding method or rubber band bonding method ) .
As the synthetic rubber foam should have a good performance , which requires :
1 , excellent weatherability ; 2, for coating with a non -polluting ; 3, a small residual deformation ; 4 , low water absorption ; 5 , can be maintained in good low temperature flexibility ; tamper seal tape 6 , having a heat resistance ; 7 , good wear resistance .
Door seal with the body is a more difficult position, sealing requirements are relatively strict, should be sealed part of a long , cross-sectional shape of the different parts of the seal , and the doors open and close frequently.
Door seals to achieve the basic shape has three sections : curved , compression type, complex . The seal is used in different parts of the shape is much more complex .
The arrangement of the door seals are: door -mounted ( fixed seal around the door ) , body -mounted ( seal fixed on the frame around the doorway ) , doors , body double mount ( around doors and openings around seals are installed on both sides ) .
Obviously , doors , body double sealing strip installed to improve the vehicle sealing, can vary according to the use of the site , made a variety of complex cross-sectional shape , in order to enhance the sealing effect, often set in the limousine three , four seals , before installing pillars and roof side beams parts quadruple seal structure . This multi -channel sealing crevices are generally arranged in the front door , in addition to having a sealing function, as well as car noise canceling effect.
high security bolt seals
high security bolt seals
2013年12月30日星期一
2013年12月23日星期一
Large windows and doors spring dust storm from the beginning
Spring wind, pervasive dust so that we stand it seems to rub home furniture re- ground , inevitably touched hand gray , so the spring anti-wind is a problem !
Important reason for many people at home , " eat dust " is the existence of a gap or window material aging , Pidian , damaged seals around doors and door bottom . Generally, door weight of a sand -proof ring . At present, many doors are steel security door, the door seal is good with the flatness of the door and sealing systems have a great relationship . If the door is not enough flatness or deformed , there will be sand quietly invasion. So when buying or replacing security door, choose a flat , excellent quality security door is critical .
For the old house , the anti-wind windows necessary to transform . There are four main forms:
1 , the installation of a new layer in the interior side of the window , which requires the original window openings have sufficient width countertops , new window frames sufficient thickness ;
2, with the original window frame as a new sub-frame windows , installing a new layer in the sub- frame windows .security ties This approach in a highly original window frame lower case selection, such as ordinary aluminum sliding window , otherwise it will affect the indoor lighting ;
3 , the transformation of the windows only open fan, replace the fan body and hardware to achieve the sealing effect , but it requires new windows and window profiles consistent with the original ;
4 , replacing the doors and windows sealed . According to the specifications of the doors and windows to select the matching model : D -type , P -, E- , I -type , such as , according to the doors of the main colors choose black , gray, white, brown , etc., and choose different specifications according to the size of the gap .
Finally, to remind everyone that if it is carried out a comprehensive reform of doors and windows , the best professional company to do . They will check the house wall structure , doors and windows of the structure and size, and then set a reasonable solution.ylon zip ties In addition , buy windows should also pay attention to the choice of plastic double-glazed windows with screens, windows sealing strip is particularly important because of its warmth , noise , anti-wind effects are better.
Important reason for many people at home , " eat dust " is the existence of a gap or window material aging , Pidian , damaged seals around doors and door bottom . Generally, door weight of a sand -proof ring . At present, many doors are steel security door, the door seal is good with the flatness of the door and sealing systems have a great relationship . If the door is not enough flatness or deformed , there will be sand quietly invasion. So when buying or replacing security door, choose a flat , excellent quality security door is critical .
For the old house , the anti-wind windows necessary to transform . There are four main forms:
1 , the installation of a new layer in the interior side of the window , which requires the original window openings have sufficient width countertops , new window frames sufficient thickness ;
2, with the original window frame as a new sub-frame windows , installing a new layer in the sub- frame windows .security ties This approach in a highly original window frame lower case selection, such as ordinary aluminum sliding window , otherwise it will affect the indoor lighting ;
3 , the transformation of the windows only open fan, replace the fan body and hardware to achieve the sealing effect , but it requires new windows and window profiles consistent with the original ;
4 , replacing the doors and windows sealed . According to the specifications of the doors and windows to select the matching model : D -type , P -, E- , I -type , such as , according to the doors of the main colors choose black , gray, white, brown , etc., and choose different specifications according to the size of the gap .
Finally, to remind everyone that if it is carried out a comprehensive reform of doors and windows , the best professional company to do . They will check the house wall structure , doors and windows of the structure and size, and then set a reasonable solution.ylon zip ties In addition , buy windows should also pay attention to the choice of plastic double-glazed windows with screens, windows sealing strip is particularly important because of its warmth , noise , anti-wind effects are better.
2013年12月16日星期一
Cold winter, the car how to better " moisturizer " mean ?
Now most of the northern region has entered the winter . People must be kept wet , the car also have to "moisture ." Face cold and dry , the most delicate parts of the car , including leather interior compartments , seats, the whole car and tire rubber seal materials , these tender parts in a dry environment easy to aging , wrinkling and even cracking, barrier security seals but just need a little aids plus your love, the problem is easily solved.
Leather interior , seat just like human skin , these leather products inside in a dry environment at once too much water loss will wrinkle even cracking. Cracks can restore people 's lips , really want to wait until the leather seats cracks may not be able to remedy it! Another problem is the treatment of these frequent contacts and body parts are not able to use oil-based protective agent - who are willing to sit in a chair beneath the greasy ass ? At this point we need to use leather conservation wax. In fact, this leather sofa in home care are also commonly used . It not only has a strong cleansing effect it clean , leather components can also keep up to one month moisturizing effect yet.
A large number of vehicles on the rubber seal is perhaps the most easily overlooked place. They shoulder a great responsibility for the vehicle waterproof, soundproof , but they are also vulnerable , prolonged exposure to air and low humidity will cause them to premature aging. Once the seal cracks on the car 's aging water, noise will have a huge impact . The same tire rubber material is also very fragile, dry environment in the long rubber material easily tire aging , and aging badly damaged once the tire wall , even if the tire tread is also deep there is no way to continue using it. Natural rubber parts for these moisturizing products also emerged , the market for sale is called " tire treasure" of the rubber material and maintenance agents , is dedicated to moisture supplies rubber components , its main function is to nourish , repair damaged rubber seal and tires ,tamper evident tapes slowing aging , and it is also in the maintenance of the same coating, when the car's four "feet" after a maintenance shiny black , you will find that your car is more than ever "handsome " was.
Leather interior , seat just like human skin , these leather products inside in a dry environment at once too much water loss will wrinkle even cracking. Cracks can restore people 's lips , really want to wait until the leather seats cracks may not be able to remedy it! Another problem is the treatment of these frequent contacts and body parts are not able to use oil-based protective agent - who are willing to sit in a chair beneath the greasy ass ? At this point we need to use leather conservation wax. In fact, this leather sofa in home care are also commonly used . It not only has a strong cleansing effect it clean , leather components can also keep up to one month moisturizing effect yet.
A large number of vehicles on the rubber seal is perhaps the most easily overlooked place. They shoulder a great responsibility for the vehicle waterproof, soundproof , but they are also vulnerable , prolonged exposure to air and low humidity will cause them to premature aging. Once the seal cracks on the car 's aging water, noise will have a huge impact . The same tire rubber material is also very fragile, dry environment in the long rubber material easily tire aging , and aging badly damaged once the tire wall , even if the tire tread is also deep there is no way to continue using it. Natural rubber parts for these moisturizing products also emerged , the market for sale is called " tire treasure" of the rubber material and maintenance agents , is dedicated to moisture supplies rubber components , its main function is to nourish , repair damaged rubber seal and tires ,tamper evident tapes slowing aging , and it is also in the maintenance of the same coating, when the car's four "feet" after a maintenance shiny black , you will find that your car is more than ever "handsome " was.
Rubber seal off how do
Glass installation loose rubber seal off how to do? 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 knock glass, loose sound.
The reason for this situation:
1 When installing the glass did not clear the debris inside the slot, and the slot right in the glass.
2 glass with glass notch uneven gaps, seals and glass tank exposed, protruding notch glass,indicative seals hand sealing tape can be easily pulled off.
3 in the corner of the rubber is not disconnected, not injection of glue.
Corrective measures are:
1 carefully before installing the glass to clear the debris inside the slot, 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 the regular fixed to prevent collisions shift deviation notch center.
2. Rubber seal can not pull too tight, cutting length than the length of the long assembly 2O-3Omm. When installing the mosaic in place, flat surfaces, and glass notch in close contact, so that the glass surrounding the force evenly. In the corner of the rubber should be beveled off and disconnect the injection of glue at the firm.
3 When caulk sealant fixed glass, you should use rubber or rubber block and choked the glass, leaving a gap of plastic injection, plastic injection depth should not be less than 5mm, before the glue curing, the glass should be kept free from vibration.nylon cable tie Installation is not centered, glass frames with uneven gaps, not close to the glass sealing strips and window frames, installation is not flat. Hand knock glass, loose sound.
The reason for this situation:
1 When installing the glass did not clear the debris inside the slot, and the slot right in the glass.
2 glass with glass notch uneven gaps, seals and glass tank exposed, protruding notch glass,indicative seals hand sealing tape can be easily pulled off.
3 in the corner of the rubber is not disconnected, not injection of glue.
Corrective measures are:
1 carefully before installing the glass to clear the debris inside the slot, 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 the regular fixed to prevent collisions shift deviation notch center.
2. Rubber seal can not pull too tight, cutting length than the length of the long assembly 2O-3Omm. When installing the mosaic in place, flat surfaces, and glass notch in close contact, so that the glass surrounding the force evenly. In the corner of the rubber should be beveled off and disconnect the injection of glue at the firm.
3 When caulk sealant fixed glass, you should use rubber or rubber block and choked the glass, leaving a gap of plastic injection, plastic injection depth should not be less than 5mm, before the glue curing, the glass should be kept free from vibration.nylon cable tie Installation is not centered, glass frames with uneven gaps, not close to the glass sealing strips and window frames, installation is not flat. Hand knock glass, loose sound.
2013年12月9日星期一
How to correctly apply seals
Proper application of seals can improve the safety of work :
1 person has no right to sealed properly applied closure device in the vehicle Guankou unsealed .
(2) All drivers are not be altered by seals, wire seals such as the discovery of internal abnormalities , must live sealed, signed off by the client . While reporting to management personnel , business dedicated to confirm
3 the driver of the vehicle at the scene only Guankou sealed.
(4) Other personnel , such as work needs to be unsealed , shall notify customers unsealed and sealed together .
5 When Guankou device sealed , must be clearly visible logo and number on seals .
6 sealed after the first wire length should not exceed 1.5cm, cut off the excess wire rope shall be treated with diagonal pliers, pull out the head hole wire spread .
7 logo and number font is unclear,cable sealing the responsible person shall promptly report to the users , the timely replacement .
1 person has no right to sealed properly applied closure device in the vehicle Guankou unsealed .
(2) All drivers are not be altered by seals, wire seals such as the discovery of internal abnormalities , must live sealed, signed off by the client . While reporting to management personnel , business dedicated to confirm
3 the driver of the vehicle at the scene only Guankou sealed.
(4) Other personnel , such as work needs to be unsealed , shall notify customers unsealed and sealed together .
5 When Guankou device sealed , must be clearly visible logo and number on seals .
6 sealed after the first wire length should not exceed 1.5cm, cut off the excess wire rope shall be treated with diagonal pliers, pull out the head hole wire spread .
7 logo and number font is unclear,cable sealing the responsible person shall promptly report to the users , the timely replacement .
2013年12月2日星期一
How to identify the merits of the spiral protective sleeve ?
1 surface appearance
Plastic protective sleeve surface smooth, no lack of material , cracks, damage , burrs , no blistering and uneven ,truck security seals no impurities, variegated and other phenomena was of high quality ; contrary, was of poor quality , substandard .
2 Hardness
Qualified quality spiral protective cover hardness is generally 85-90 degrees Shore hardness is below 85 degrees or above 90 degrees do not meet the requirements. Hardness is too low , you can not play the internal product protection , binding effect ; excessive hardness , when used at low temperatures , protective sleeve prone to embrittlement, 1% to 5 % of the products can not meet the requirements, the spiral protective sleeve the protective effect of internal product is greatly reduced.
3 . Resistance to high temperature
Qualified quality spiral protective cover should have good resistance to high temperature performance. Identification of the user using the following method : turn the screw placed under protective cover 80 ℃ ambient 1 hour , 0.5 hours under room temperature under -40 ℃ environment for 1 hour at room temperature environment 0.5 hours , do it five cycles. Observation, if the spiral protective cover without cracking, sticky, depression occurred, compared with high-quality ; Conversely, if the spiral protective cover cracking , deformation, etc. One sticky or depression phenomena , the protective sleeve is inferior , not qualified.
4 oil resistance
Qualified quality spiral protective sleeve has good oil resistance. The protective sleeve can be soaked in a mixture of the coil 70 # gasoline and 10 percent toluene for 5 minutes , without discoloration phenomenon tacky compared to high- pass ; contrary, discolored , sticky phenomenon , the protective sleeve is poor , failed.
5. Wear
Qualified quality spiral protective sleeve has good wear resistance.
6 tensile strength , impact strength
High- pass coil protection cover has good tensile strength and impact strength, tensile strength at room temperature is generally 25-30Mpa; generally impact strength ( notched ) at room temperature was 35KJ/M2, -40 ℃ / 24h to 5KJ / M, impact strength ( unnotched ) fixed length plastic strap seal, continuously.
7 anti-UV
Spiral protective sleeve has good UV resistance . Protective sleeve black spiral columns must be better than carbon black production , to enhance UV resistance spiral protective sleeve .
8. Antistatic
Spiral protective sleeve is mainly used excavators, loaders, rollers pavers , forklifts , cranes, pumping machinery , outside the protection of cables and other construction machinery and injection molding machine equipment . Underground, dry environment when the job should be considered a strong choice spiral antistatic protective sleeve . Antistatic properties to enhance the internal hydraulic pipe fittings and other products , in a variety of harsh environments of the hydraulic tube play better security role !
Plastic protective sleeve surface smooth, no lack of material , cracks, damage , burrs , no blistering and uneven ,truck security seals no impurities, variegated and other phenomena was of high quality ; contrary, was of poor quality , substandard .
2 Hardness
Qualified quality spiral protective cover hardness is generally 85-90 degrees Shore hardness is below 85 degrees or above 90 degrees do not meet the requirements. Hardness is too low , you can not play the internal product protection , binding effect ; excessive hardness , when used at low temperatures , protective sleeve prone to embrittlement, 1% to 5 % of the products can not meet the requirements, the spiral protective sleeve the protective effect of internal product is greatly reduced.
3 . Resistance to high temperature
Qualified quality spiral protective cover should have good resistance to high temperature performance. Identification of the user using the following method : turn the screw placed under protective cover 80 ℃ ambient 1 hour , 0.5 hours under room temperature under -40 ℃ environment for 1 hour at room temperature environment 0.5 hours , do it five cycles. Observation, if the spiral protective cover without cracking, sticky, depression occurred, compared with high-quality ; Conversely, if the spiral protective cover cracking , deformation, etc. One sticky or depression phenomena , the protective sleeve is inferior , not qualified.
4 oil resistance
Qualified quality spiral protective sleeve has good oil resistance. The protective sleeve can be soaked in a mixture of the coil 70 # gasoline and 10 percent toluene for 5 minutes , without discoloration phenomenon tacky compared to high- pass ; contrary, discolored , sticky phenomenon , the protective sleeve is poor , failed.
5. Wear
Qualified quality spiral protective sleeve has good wear resistance.
6 tensile strength , impact strength
High- pass coil protection cover has good tensile strength and impact strength, tensile strength at room temperature is generally 25-30Mpa; generally impact strength ( notched ) at room temperature was 35KJ/M2, -40 ℃ / 24h to 5KJ / M, impact strength ( unnotched ) fixed length plastic strap seal, continuously.
7 anti-UV
Spiral protective sleeve has good UV resistance . Protective sleeve black spiral columns must be better than carbon black production , to enhance UV resistance spiral protective sleeve .
8. Antistatic
Spiral protective sleeve is mainly used excavators, loaders, rollers pavers , forklifts , cranes, pumping machinery , outside the protection of cables and other construction machinery and injection molding machine equipment . Underground, dry environment when the job should be considered a strong choice spiral antistatic protective sleeve . Antistatic properties to enhance the internal hydraulic pipe fittings and other products , in a variety of harsh environments of the hydraulic tube play better security role !
Automotive sealing Development
For a long time , the vehicle must have a seal requires three functions : connecting , sealing and decorative. With the advancement of technology, the development of the automotive industry , especially in emerging new materials , environmental protection awareness of the car , comfort , safety, aesthetics have become increasingly demanding , the previous three functions for automotive sealing requirements are constantly introduce new and improved. To meet passenger vehicle performance and grades increasing needs, are from Applied Materials seals for passenger cars , product structure and production technology and other aspects of analysis, research trends strip door seal industry
Development of a passenger seal Review
Before the 1980s , because of the limitations of science and technology level , almost all automotive seals, mostly connected only considered to meet the performance and some sealing performance, with little regard for decorative, safety and comfort. Therefore , when the seal only consider using buses connect many aspects , such as the front and rear windscreens , side windows , door seal ; structure is very simple , mostly single types of plastic , one end connected to the body , one end connected to glass ; the material is natural rubber or styrene-butadiene rubber , plastics ( mainly modified PV C) based. Although such a seal to meet the connectivity and some sealing performance, but other properties such as elasticity , waterproof, noise canceling , isolation , dust , heat , weather , ozone resistance, anti-aging , etc. are poor, let alone the aesthetics and comfort . Due to the performance limitations of the material itself , the life of the car with the seal only 3 to 5 years, can not match the life of passenger cars ; color is also relatively simple ( almost entirely of black rubber ) , not to mention decorative and beautiful of it. Doors , body , luggage compartment seal are poor, large interior noise , dust, water is also very poor. The late 1980s, with the continuous improvement of passenger grade , with a seal on the passenger 's requirements have been increased .
Two seals currently used bus status
From the 1980s to the present , the automotive parts industry, the comprehensive performance requirements increasing, of course, the seal industry has great development.
( 1 ) before sealing the product mix has changed a lot . The original single types of plastic adhesive to now two types ( ie, dense or dense rubber and sponge rubber compound ) , three composite materials ( ie dense rubber, sponge rubber and steel or nylon composite skeleton ) , four composite materials ( i.e. dense rubber, sponge rubber or nylon and steel frame , four composite flocking material ) . Natural rubber ( or styrene ) and plastic , using a synthetic rubber EPDM (EPDM).
Application ( 2 ) the development of a new material . Abandoned strength , heat resistance, weather resistance, aging resistance are poor natural rubber ( SBR or ) and plastic , using a synthetic rubber EPDM (EPDM). E PDM has excellent heat resistance, weather resistance, ozone resistance , and its main physical properties are shown in Table 1. Due to the excellent characteristics E PDM , so the recent decades of sustained growth in sales volume .
( 3 ) Production farewell pure steam autoclave curing rubber extrusion original production process, using a more advanced multi- head extrusion microwave curing production process, as well as secondary processing injection molding process .
Obviously, the primary seal is the most basic function is to seal needs water, every noise and dust . Indeed , the sealing effect can be further improved by improving the design . Now anti-friction material requirements are also increasing, so that the sealing performance can be maintained for longer , but also to reduce the damage during the original installation . The main role of the seal is to make the car as much as possible with the outside world, to maximize driver and passenger comfort . It should be said , and now the seal connecting , sealing , decorative, security, and so have a greater degree of improvement over the previous twenty- 1980s, but in the decorative, environmental aspects are still some gaps .
3 passenger trends sealing strip
The rapid development of the automotive industry , the performance of the car with a variety of seal put forward higher requirements. Development of new materials, new technology applications of science and technology for the development of the seal industry provides a space for development. Requirements for seals not only stay on the connection , sealing, decorative three functions, the car 's environmentally friendly, safe , comfortable and beautiful and so put forward new demands. This requires the selection of material from the sealing strip , structural improvements, the selection of the manufacturing process required to continue to improve .
( 1 ) From the choice of materials , not just stay on the E PDM applications. Molding process is relatively simple thermoplastic elastomers : T PV ( thermoplastic elastomer vaporization ), TPE ( thermoplastic elastomer ), T PO ( thermoplastic olefin ) ,high security seal etc. has been widely used in some areas. They have strong coloring , compound and recyclability good , but also to meet environmental requirements. Physical properties of thermoplastic elastomer in Table 1, the following advantages : excellent flex fatigue life ; temperature ; high impact strength ; density ; excellent chemical resistance and weathering resistance ; excellent electrical properties ; high high tear and abrasion resistance ; colorability ; renewable ; able to co-injection molding and extrusion pressure and total polyolefin ; low tensile and compression set .
( 2 ) structural improvements : The outer surface of the composite in harmony with the vehicle interior materials of different colors , such as color E PDM, colored thermoplastic elastomer ; using surface coating wear and lubrication materials instead of the original flocking material ; application various smooth surface coating , matte or four colored composite material .
( 3) Process Improvement : full speed with pre- shaped hot air vulcanization ordinary microwave hot air vulcanization process + + + , greatly improving the surface quality and production efficiency vulcanized sealing strips ; cancel the original molding process , replacing various secondary injection molding process , both to improve the efficiency and quality improvements ; online instead of the original hand- spraying spraying .
4 Conclusion
In short , with the continuous improvement of quality cars , buses seal performance requirements have been increased . Structure is reasonable, humane design , production process flow , automation, product safety , environmental protection metal security seals, recyclability , matching aesthetics, diversity is important to consider the performance of automotive sealing .
Development of a passenger seal Review
Before the 1980s , because of the limitations of science and technology level , almost all automotive seals, mostly connected only considered to meet the performance and some sealing performance, with little regard for decorative, safety and comfort. Therefore , when the seal only consider using buses connect many aspects , such as the front and rear windscreens , side windows , door seal ; structure is very simple , mostly single types of plastic , one end connected to the body , one end connected to glass ; the material is natural rubber or styrene-butadiene rubber , plastics ( mainly modified PV C) based. Although such a seal to meet the connectivity and some sealing performance, but other properties such as elasticity , waterproof, noise canceling , isolation , dust , heat , weather , ozone resistance, anti-aging , etc. are poor, let alone the aesthetics and comfort . Due to the performance limitations of the material itself , the life of the car with the seal only 3 to 5 years, can not match the life of passenger cars ; color is also relatively simple ( almost entirely of black rubber ) , not to mention decorative and beautiful of it. Doors , body , luggage compartment seal are poor, large interior noise , dust, water is also very poor. The late 1980s, with the continuous improvement of passenger grade , with a seal on the passenger 's requirements have been increased .
Two seals currently used bus status
From the 1980s to the present , the automotive parts industry, the comprehensive performance requirements increasing, of course, the seal industry has great development.
( 1 ) before sealing the product mix has changed a lot . The original single types of plastic adhesive to now two types ( ie, dense or dense rubber and sponge rubber compound ) , three composite materials ( ie dense rubber, sponge rubber and steel or nylon composite skeleton ) , four composite materials ( i.e. dense rubber, sponge rubber or nylon and steel frame , four composite flocking material ) . Natural rubber ( or styrene ) and plastic , using a synthetic rubber EPDM (EPDM).
Application ( 2 ) the development of a new material . Abandoned strength , heat resistance, weather resistance, aging resistance are poor natural rubber ( SBR or ) and plastic , using a synthetic rubber EPDM (EPDM). E PDM has excellent heat resistance, weather resistance, ozone resistance , and its main physical properties are shown in Table 1. Due to the excellent characteristics E PDM , so the recent decades of sustained growth in sales volume .
( 3 ) Production farewell pure steam autoclave curing rubber extrusion original production process, using a more advanced multi- head extrusion microwave curing production process, as well as secondary processing injection molding process .
Obviously, the primary seal is the most basic function is to seal needs water, every noise and dust . Indeed , the sealing effect can be further improved by improving the design . Now anti-friction material requirements are also increasing, so that the sealing performance can be maintained for longer , but also to reduce the damage during the original installation . The main role of the seal is to make the car as much as possible with the outside world, to maximize driver and passenger comfort . It should be said , and now the seal connecting , sealing , decorative, security, and so have a greater degree of improvement over the previous twenty- 1980s, but in the decorative, environmental aspects are still some gaps .
3 passenger trends sealing strip
The rapid development of the automotive industry , the performance of the car with a variety of seal put forward higher requirements. Development of new materials, new technology applications of science and technology for the development of the seal industry provides a space for development. Requirements for seals not only stay on the connection , sealing, decorative three functions, the car 's environmentally friendly, safe , comfortable and beautiful and so put forward new demands. This requires the selection of material from the sealing strip , structural improvements, the selection of the manufacturing process required to continue to improve .
( 1 ) From the choice of materials , not just stay on the E PDM applications. Molding process is relatively simple thermoplastic elastomers : T PV ( thermoplastic elastomer vaporization ), TPE ( thermoplastic elastomer ), T PO ( thermoplastic olefin ) ,high security seal etc. has been widely used in some areas. They have strong coloring , compound and recyclability good , but also to meet environmental requirements. Physical properties of thermoplastic elastomer in Table 1, the following advantages : excellent flex fatigue life ; temperature ; high impact strength ; density ; excellent chemical resistance and weathering resistance ; excellent electrical properties ; high high tear and abrasion resistance ; colorability ; renewable ; able to co-injection molding and extrusion pressure and total polyolefin ; low tensile and compression set .
( 2 ) structural improvements : The outer surface of the composite in harmony with the vehicle interior materials of different colors , such as color E PDM, colored thermoplastic elastomer ; using surface coating wear and lubrication materials instead of the original flocking material ; application various smooth surface coating , matte or four colored composite material .
( 3) Process Improvement : full speed with pre- shaped hot air vulcanization ordinary microwave hot air vulcanization process + + + , greatly improving the surface quality and production efficiency vulcanized sealing strips ; cancel the original molding process , replacing various secondary injection molding process , both to improve the efficiency and quality improvements ; online instead of the original hand- spraying spraying .
4 Conclusion
In short , with the continuous improvement of quality cars , buses seal performance requirements have been increased . Structure is reasonable, humane design , production process flow , automation, product safety , environmental protection metal security seals, recyclability , matching aesthetics, diversity is important to consider the performance of automotive sealing .
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